TWI660711B - Temperature sensing device for automatic switching mode and method for automatically switching modes - Google Patents

Abstract

The invention provides a temperature sensing device with automatic switching mode and a method for automatically switching modes. The device includes: a control unit that determines whether the temperature sensing device enters or leaves a first mode or a second mode; a power source A power supply unit that provides power to the temperature sensing device; and a power supply circuit including the power supply unit and electrically connected to the control unit to provide power, characterized in that the power supply circuit includes a detection unit and the detection unit The power supply unit and the control unit are electrically connected, and the detection unit detects a moment when the temperature sensing device is moved from a rest state, so as to enable the control unit to determine that the temperature sensing device leaves the first mode and enters the The second mode.

Description

   Temperature sensing device for automatic switching mode and method for automatically switching modes   

The present invention relates to a startup operation of a temperature sensing device. More specifically, the present invention is a temperature sensing device with an automatic switching mode and a method for automatically switching modes.

The electronic thermometer can provide fast and accurate measurement of human body temperature, so it has replaced the traditional mercury thermometer in ordinary households. According to the prior art, the start-up design of the electronic thermometer is performed by a mechanical switch. The power switch must be manually operated by the user. After the power switch is turned from the OFF position to the ON position or the power switch is continuously pressed for a period of time, the electronic thermometer The thermometer enters the boot process. After the startup procedure is completed, the user can use the measurement function of the electronic thermometer. In addition, the shutdown design of the electronic thermometer must be manually operated by the user to switch from the ON position to the OFF position, or automatically shut down after counting for a period of time in the standby state. In addition, after the electronic thermometer completes the startup procedure, the user needs to manually press a function key to perform temperature measurement.

In order to improve the user's experience of operating the electronic thermometer, if the user picks up or moves the electronic thermometer from a stationary state, the electronic thermometer can automatically enter the startup procedure or directly perform temperature measurement, which will eliminate the need for the user to operate it again. The artificial operation of the power-on action or the pressing of the function keys makes the electronic thermometer a better operating experience.

One of the many objects of the present invention is to provide a temperature sensing device with an automatic switching mode and a method for automatically switching modes. A detection unit detects a moment when the temperature sensing device is moved from a resting state, so that the The temperature sensing device automatically enters the boot process to improve the user's operating experience.

One of the many purposes of the present invention is to provide a temperature sensing device with an automatic switching mode and a method for automatically switching modes. The touch sensing method detects the moment when the temperature sensing device is moved from a static state and automatically enters a booting process. , And perform temperature measurement by shaking or start temperature measurement again.

In order to achieve the above objects of the present invention, the present invention provides a temperature sensing device with automatic switching mode, which includes: a control unit that determines whether the temperature sensing device enters or leaves a first mode or a second mode; a power supply A power supply unit that provides power to the temperature sensing device; and a power supply circuit including the power supply unit and electrically connected to the control unit to provide power, characterized in that the power supply circuit includes a detection unit and the detection unit The power supply unit and the control unit are electrically connected, and the detection unit detects a moment when the temperature sensing device is moved from a rest state, so as to enable the control unit to determine that the temperature sensing device leaves the first mode and enters the In a second mode, the detection unit detects when the temperature sensing device is in a resting state, so that the control unit can determine that the temperature sensing device enters the first mode.

The detection unit includes a touch sensing circuit that detects when the temperature sensing device is touched by the user, and a shaking sensing circuit that detects the temperature sensing device. The shaking state of the sensor may enable the temperature measurement function or start the temperature measurement again.

To achieve the above-mentioned objects of the present invention, the present invention provides a method for automatically switching modes, which is suitable for a temperature sensing device to enter or leave a first mode or a second mode. The method includes: providing a temperature sensing device in the temperature sensing device. A detection unit, which is electrically connected to a power supply unit and a control unit; and uses the detection unit to detect a moment when the temperature sensing device is moved from a resting state, so that the control unit determines the temperature sensing The device leaves the first mode and enters the second mode, and uses the detection unit to detect when the temperature sensing device is in a stationary state, so that the control unit determines that the temperature sensing device enters the first mode. .

The method of the present invention includes: providing a detecting unit in the temperature sensing device including a touch sensing circuit, the touch sensing circuit detecting a moment when the temperature sensing device is touched by a user, and a shaking sensing circuit The shaking detection circuit detects a shaking state of the temperature sensing device to enable a temperature measurement function or start the temperature measurement again.

According to the present invention, the temperature sensing device and the method for automatically switching modes of the automatic switching mode, the first mode is an automatic detection mode or a state of automatically shutting down in a standby state, and the second mode is a standby state or temperature measurement mode or turning on The state after the procedure.

According to the temperature sensing device implemented by the present invention and the method for automatically switching modes, a user operating the temperature sensing device of the present invention, such as a forehead thermometer or an ear thermometer, will obtain "automatic start-up when picked up from a stationary state" Or "the measurement mode will be automatically turned on when picked up from a stationary state" operation experience, and reduce the average time required to use each time is about 3 to 5 seconds to confirm "device is turned on" or "whether it has entered a measurable state" Time, and shorten the countdown time to shut down directly and automatically shut down, to achieve the effect of battery saving. In addition, the temperature measurement is started again by shaking, instead of pressing the function key, the electronic thermometer has a better operating experience.

10‧‧‧Temperature sensing device

11‧‧‧Control Unit (MCU)

12‧‧‧LCD display

13‧‧‧function keys

14‧‧‧Digital proximity sensor

15‧‧‧ Thermopile Temperature Sensor

16‧‧‧ Siren

17‧‧‧Memory (EEPROM)

18‧‧‧ communication port

19‧‧‧shell

20‧‧‧Power circuit

21‧‧‧ Detection Unit

22‧‧‧Sensing Pad

200,210,400,410‧‧‧Automatic switching mode

201,202,203,204,205,206,207,401,402,403,404,405,406,407

The first figure is a block diagram of a temperature sensing device in an automatic switching mode of the present invention.

The second figure is a front view, a perspective view, and a side view of a temperature sensing device according to the present invention.

FIG. 3A is a circuit diagram of a detection unit of a power circuit of the temperature sensing device of the present invention.

FIG. 3B is a block diagram of a detection unit of another power circuit of the temperature sensing device of the present invention.

The fourth diagram is a circuit diagram of the sensor oscillation circuit shown in the third diagram B.

FIG. 5A and FIG. 5B are flowcharts of an automatic switching mode of another temperature sensing device according to the present invention.

The sixth figure is a side view of another temperature sensing device according to the present invention.

FIG. 7A and FIG. 7B are flowcharts of another automatic switching mode of the temperature sensing device of the present invention.

Please refer to the first figure, which shows a block diagram of the temperature sensing device of the automatic switching mode of the present invention. In the embodiment of the present invention, the temperature sensing device 10 in the automatic switching mode includes a control unit (MCU) 11. The control unit 11 determines whether the temperature sensing device 10 enters or leaves a first mode or a second mode. It is electrically connected to other blocks shown in the first figure and executes the temperature sensing function of the temperature sensing device 10; a communication port 18 receives externally set calibration parameters and programs; a memory (EEPROM) 17 stores the calibration Parameters and programs for the control unit 11 to access; a digital proximity sensor 14 and a thermopile temperature sensor 15 sense the measurement data of the human body for the control unit 11 to calculate the human ear temperature or Forehead temperature; a function key 13 that triggers the control unit 11 to perform temperature calculation processing steps and display measurement data steps, as shown in Figures 3, 5, and 6; a buzzer 16 that triggers the control unit 11 at the function key 13 At the time, an alarm sound is generated by the control unit 11; an LCD display 12 displays the human ear or forehead temperature calculated by the control unit 11; and a power circuit 20 is electrically connected to the control unit 11 to provide electricity And through the control unit 11 to provide power to other blocks shown in the first figure in the working state, the power supply circuit 20 includes a power supply unit (not shown) and a detection unit 21, where the power supply unit may be A battery, a rechargeable battery, a solar battery, or other power supply unit. The following power supply unit uses a battery as an example. The detection unit 21 is electrically connected to the battery and the control unit 11, and the detection unit 21 detects the moment when the temperature sensing device 10 is moved from a resting state to enable The control unit 11 determines that the temperature sensing device 10 leaves the first mode and enters the second mode, and the detection unit 21 detects a moment when the temperature sensing device 10 is in a stationary state, so that the control unit 11 is enabled. It is determined that the temperature sensing device 10 enters the first mode.

In the embodiment of the present invention, the power supply circuit 20 defines a power supply circuit between the battery, the control unit 11 and the detection unit 21. The detection state of the detection unit 21 enables the control unit 11 to enter a working state or enables the control unit 11 to execute a program to complete the setting of the booting process. According to the sensing state of the detection unit 21, the control unit 11 causes the temperature sensing device 10 to enter or leave a first mode or a second mode. In various embodiments of the present invention, the detection unit 21 can be operated by gravity It is implemented by different units such as G-sensor, ball switch, mercury switch or touch sensing circuit. Wherein, the implementation of the detection unit 21 by different units also makes the first mode or the second mode of the temperature sensing device 10 different. In different embodiments of the present invention, the detection unit 21 uses different units. The first mode of the temperature sensing device 10 may be an automatic detection mode or a state after an automatic shutdown in a standby state, and the temperature sensing device The second mode of 10 may be a standby state or a temperature measurement mode or a state after a boot-up procedure.

In an embodiment of the present invention, the battery of the power supply circuit 20 directly supplies power to the control unit 11 and the memory 17, and the detection unit 21 is electrically connected to a pin of the control unit 11. The sensing state determines the potential of the pin. In this embodiment, the first mode of the temperature sensing device 10 is an automatic detection mode. In the automatic detection mode, the control unit 11 is powered on and working, and executes a program stored in the memory 17 to determine The potential of this pin. When the detecting unit 21 detects that the temperature sensing device 10 is continuously in a static state and the pin is at a low potential (L), the control unit 11 continues to judge whether the potential of the pin has changed until the time when the detecting The detecting unit 21 detects the moment when the temperature sensing device 10 is moved or picked up from a resting state, and the pin is changed to a high potential, the control unit 11 executes the startup procedure according to the program to perform the temperature sensing device. 10 initial settings. Therefore, the detection unit 21 enables the control unit 11 to determine that the temperature sensing device 10 leaves the automatic detection mode and enters the startup procedure or the standby state or the temperature measurement mode. In addition, in order to prevent the temperature sensing device 10 from being accidentally moved due to being in a stationary state, but the user has not picked up the temperature sensing device 10, the control unit 11 can judge the potential state of the pin to exclude this one. Malfunctions, for example: when the potential of the pin changes from L to H, and soon from H to L, the control unit 11 will not execute the startup procedure and leave the automatic detection mode (first mode).

According to the prior art, the conventional temperature sensing device starts a shutdown time counting in a standby state, and automatically shuts down after a period of time. In the above embodiment of the present invention, when the control unit 11 starts the shutdown count in the standby state, if the detection unit 21 detects the moment when the temperature sensing device 10 is in the stationary state, and the pin When it is at a low potential (L), the control unit 11 does not need to wait until the shutdown counting time ends, and can directly shut down to shorten the automatic shutdown time of the prior art, and also achieve the effect of saving battery energy.

Please refer to the second figure, which shows a front view, a perspective view, and a side view of a temperature sensing device according to the present invention. In this embodiment of the present invention, the temperature sensing device 10 of the present invention includes a housing 19. All the blocks shown in the first figure are arranged in the housing 19, and the detection unit 21 of the power circuit 20 can be formed by the housing. The body surface is realized by a push switch. The casing 19 is designed according to the outline shown in the second figure and matched with the gravity provided by the battery installed in the casing 19, so that when the temperature sensing device 10 is placed on a plane L, regardless of its initial placement posture, The outline design of the casing 19 is like a tumbler, so that the casing 19 will eventually keep a predetermined bottom contacting the plane L. The pressing switch serving as the detection unit 21 will be installed on a predetermined bottom of the casing 19, and a convex portion capable of operating the pressing switch will protrude from the surface of the predetermined bottom. Therefore, as shown in the second figure, when the temperature sensing device 10 is placed on a plane L, the bottom of the housing 19 contacting the plane L will cause the convex portion of the push switch to be actuated to press the push switch. When the temperature sensing device 10 is picked up from the plane L, leaving the bottom of the housing 19 away from the plane L will cause the convex portion of the pressing switch to be inactive and the pressing switch will not be pressed. In addition, the pressing switch is disposed at a preset bottom of the housing 19, preferably to avoid a user from operating the holding portion of the temperature sensing device 10, so as to prevent a malfunction caused by pressing the pressing switch during temperature measurement.

In this embodiment of the present invention, the power supply circuit 20 configures the push switch in the power supply path between the battery and the control unit 11. When the push switch is pressed, the control unit 11 is turned off, and when the push switch When from the pressed state to the unpressed state, the control unit 11 will be powered into the working state to execute the startup procedure and enter the standby state. In another embodiment of the present invention, the power supply circuit 20 includes at least two push switches as the detection unit 21 to increase the chance of the push switches being pressed according to the different postures of the temperature sensing device 10, and The two push switches are connected in series in the power supply circuit 20. When the temperature sensing device 10 is placed in a non-planar position, any one of the pressing switches can be pressed to bring the control unit 11 into a shutdown state. In still another embodiment of the present invention, the casing 19 has a movable protruding mechanism, as shown in the second figure, the mechanism protruding from the surface of the casing. When the protruding mechanism is pressed, the protruding mechanism At least one pressing switch of the power circuit 20 in the casing 19 can be actuated to achieve the purpose of the present invention in the foregoing embodiments.

Please refer to FIG. 3A, which shows a circuit diagram of a detecting unit 21 of a power supply circuit 20 of the temperature sensing device of the present invention. In this embodiment of the present invention, the detection unit 21 of the power circuit 20 includes a shaking sensing circuit, as shown in FIG. 3A. The shake detection circuit uses an all-phase ball switch as an example. The all-phase ball switch has two electrical contacts, and its detection characteristic is that when the ball switch is stationary, the two electrical contacts 1,2 are in a conducting state, and when the ball switch is picked up, the two electrical contacts 1,2 Short-term open. The sloshing sensing circuit of the power circuit 20 includes an RC circuit, which includes resistors R1, R2, R3, and capacitor C. The connection relationship is shown in the figure, where Vcc is connected to the power supply unit of the power circuit 20, for example, a battery . The all-phase ball switch is matched with an RC circuit to form a loop. The parameters of the R1, R2, R3 and capacitor C of the RC circuit can adjust the sensitivity of the ball switch signal. When the ball switch is in a static state, the two electrical contacts 1,2 of the ball switch are in a short-circuit conduction state. The level of its electrical contact 1 is determined by the resistor R2 and R3 in parallel with the divided voltage of the resistor R1. The higher the easier it is to trigger the transistor Q to turn on, that is, the higher the sensitivity. When the value of the resistor R1 and the capacitor C is larger, when the ball switch is shaken, the voltage rise time of the electrical contact 1 will be slower, the less easily the transistor Q will be turned on, and the sensitivity will be lower. When the transistor Q is turned on, the control unit 11 is enabled and the work is executed to enter a standby state or a temperature measurement mode. In addition, the shake detection circuit of the power supply circuit 20 uses the transistor Q as a buffer so that the control unit 11 can be kept in an off state to avoid excessive standby power consumption.

In different embodiments of the present invention, the shaking sensing circuit shown in FIG. 3A may also select a gravity sensor or a mercury switch to achieve the object of the present invention in the foregoing embodiments.

Please refer to FIG. 3B, which shows a block diagram of a detecting unit 21 of another power circuit of the temperature sensing device of the present invention. In this embodiment of the invention, the detection unit 21 of the power circuit 20 includes a touch sensing circuit, and is electrically connected to the power supply unit and the control unit. The touch sensing circuit detects when the temperature sensing device is touched by a user, so that the control unit can determine that the temperature sensing device leaves the first mode and enters the second mode. The touch sensing circuit includes a sensor oscillating circuit, having a sensing pad 22 and an output signal, and a frequency sampling circuit, which is electrically connected to the sensor oscillating circuit, and samples the frequency of the output signal to output a The sampling signal is sent to the control unit 11. When the sensing pad 22 is touched by a user's hand, the sensor oscillation circuit will change the frequency of the output signal, and the frequency sampling circuit is enabled to enable the control unit 11 to determine the temperature sensing device according to the sampling signal. Leaving the first mode and entering the second mode.

Please refer to the fourth diagram for a circuit diagram of the sensor oscillation circuit shown in the third diagram B. As shown in the fourth figure, the sensor oscillation circuit uses a plurality of inverters and a buffer with an RC circuit to achieve the effect of oscillation, and outputs an output signal with a frequency. When the user's hand does not touch the sensing pad 22, the sensor oscillation circuit outputs an output signal with a fixed frequency; when the user's hand touches the sensing pad 22, the sensor oscillation circuit generates a frequency offset , And output a slower frequency output signal. Therefore, the frequency sampling circuit of the touch sensing circuit samples the frequency of the output signal, and the output sampling signal can reflect whether the sensing pad 22 has been touched by the user's hand, so that the control unit 11 can detect the signal according to the sampling signal. It is determined that the temperature sensing device leaves the first mode and enters the second mode.

The sensing pad 22 of the sensor oscillation circuit is preferably disposed on the outer surface of the temperature sensing device, as shown in the sixth figure. The larger the area of the sensing pad 22 is, the better the sensitivity is. The shape of the sensing pad 22 can be a solid round shape, a square shape, or a rectangular shape, and the lines can also form a basket type. The material of the sensing pad 22 may be selected from PCB copper foil, metal sheet, flat top spring, conductive cotton, conductive rubber, ITO glass layer, and the like.

Please refer to FIG. 5A and FIG. 5B for a flowchart of another automatic switching mode of the temperature sensing device of the present invention. In this embodiment of the present invention, the temperature sensing device 10 of the present invention includes a housing 19. All the blocks shown in the first figure are arranged in the housing 19, and the detection unit 21 of the power supply circuit 20 is optional. All-phase ball switches, gravity sensors, or mercury switches are used to implement the shaking state sensed by the detection unit 21 to the potential change of a pin of the control unit 11, and the control unit 11 is powered and working. Detect and judge potential changes. The automatic switching mode of the temperature sensing device 10 in this embodiment can use the method 200 shown in FIG. 5A and the method 210 shown in FIG. 6B. The difference between the two is only in the order of the steps. The technical field to which the invention belongs has general knowledge Can be easily associated and completed easily. The method 200 shown in FIG. 5A enters the second mode (or standby mode) of the standby state after the temperature sensing device 10 is shaken away from the first mode; the method 210 shown in FIG. 5B is in the temperature sensing device 10 After being shaken from the first mode, it enters a second mode (or temperature measurement mode) for measuring temperature.

Please refer to FIG. 5A. The method 200 for automatically switching modes of the present invention is applicable to a temperature sensing device 10 entering or leaving a first mode or a second mode, including: Step 201: shake detection, in the first mode In the automatic detection mode, the control unit 11 determines the potential change of the pins associated with the detection unit 21 to determine whether the temperature sensing device 10 leaves the first mode. When the temperature sensing device 10 is placed in a When the plane is at rest, the detection unit 21 senses that it is not shaken, so that the control unit 11 detects that the pins are at a fixed potential, such as a low potential. Therefore, the temperature sensing device 10 continues to be in the first mode; until the The temperature sensing device 10 is moved or picked up, the detection unit 21 senses shaking, so that the control unit 11 detects a change in the potential of the pin, thereby determining to enter the working state and leave the first mode. Step 202: a startup procedure, the control unit 11 executes the startup procedure according to the program of the memory 17 to initialize the temperature sensing device 10 (including the control unit 11 supplying power to the other blocks shown in the first figure), the temperature sensor The measuring device 10 enters a second mode, such as a standby state or a temperature sensing mode.

In this embodiment of the present invention, in the second mode, the shaking state sensed by the detection unit 21 can be used to trigger the temperature sensing device 10 by changing the potential of a pin associated with the control unit 11. Perform temperature measurement and display. Step 203: shake detection. In the second mode, the control unit 11 detects a change in the potential of the pin to determine whether the detection unit 21 senses the shake. If there is a shake, the control unit 11 performs the temperature calculation in step 204. Processing, if not shaken, the control unit 11 executes the shutdown time count of step 206. In another embodiment of the present invention, in the second mode, in step 203, the control unit 11 can determine whether the function key 13 is pressed. If the function key 13 is pressed, the control unit 11 executes the temperature calculation process in step 204. If the function key 13 has not been pressed, the control unit 11 performs a shutdown time count of step 206. In addition to triggering the temperature measurement function, the function key 13 also has a shutdown function. For example, when the function key 13 is continuously pressed for a period of time, it immediately enters a shutdown state.

Continuing to refer to the flowchart shown in FIG. 5A, in this embodiment of the present invention, step 204, temperature calculation processing, the control unit 11 enables the digital proximity sensor 14 and the thermopile temperature sensor 15 to sense Regarding the measurement data of the human body, after calculating the ear temperature or frontal temperature of the human body, the control unit 11 executes displaying the measurement data in step 205. In step 205, the measurement data is displayed. The control unit 11 displays the calculated ear temperature or forehead temperature data of the human body on the LCD display 12, returns to the second mode, and proceeds to step 203. In step 206, the shutdown time is counted. When the temperature sensing device 10 is in the second mode and the detection unit 21 does not shake, the control unit 11 starts the shutdown time counting and executes the shutdown time judgment in step 207. In step 207, the shutdown time, the control unit 11 judges that the shutdown time count result has not reached the shutdown time, returns to the second mode, and continues to execute step 203, until it is determined that the shutdown time count result reaches the shutdown time, the control unit 11 determines the temperature sensing The device 10 enters the first mode and executes step 201.

Please refer to FIG. 5B. The difference between the method 210 of the present invention for automatic switching mode and the method 200 shown in FIG. 6A lies in the order of steps, and the same step numbers 201, 202, ... perform the same content. Therefore, in the method 210 for automatically switching modes of the present invention, after the temperature sensing device 10 is shaken away from the first mode, it enters a second mode (or temperature measurement mode) for measuring temperature and performs steps 204 and 205. To measure the temperature again or enter the second mode, the user can shake the temperature sensing device 10 again; if the temperature sensing device 10 is left still, then return to the first mode via steps 206 and 207.

Please refer to the sixth figure, which illustrates a side view of another temperature sensing device according to the present invention. In this embodiment of the present invention, the temperature sensing device 10 of the present invention includes a housing 19 having a bottom, an upper surface, and two sides. All the blocks shown in the first figure are arranged in the housing 19, The detection unit 21 of the power circuit 20 includes a touch sensing circuit as shown in FIG. 3B and a shake sensing circuit as shown in FIG. 3A. The sensing pad 22 of the touch sensing circuit is preferably disposed on the upper surface or both sides of the housing 19, and the larger the area of the sensing pad 22 is, the better the sensitivity is. The material can be selected from PCB copper foil, Metal sheet, flat top spring, conductive cotton, conductive rubber, ITO glass layer, etc. The casing 19 has a contour design and a gravity provided by the battery installed in the casing 19, so that when the temperature sensing device is placed on a plane L, regardless of its initial placement posture, the contour design of the casing 19 Like a tumbler, the housing 19 will eventually keep a preset bottom contacting the plane L, and the upper surface and both sides are kept in the upper position of the plane L, so that the user can easily touch the housing 19 The touch sensor 22. In another embodiment, the housing 19 of the temperature sensing device 10 of the present invention can also be placed in a box, so that the user can easily touch the sensing pad 22 when he picks up the temperature sensing device 10.

Please refer to FIG. 7A and FIG. 7B for a flowchart of another automatic switching mode of the temperature sensing device of the present invention. In the embodiment shown in FIG. 6 of the present invention, the automatic switching mode of the temperature sensing device 10 of the present invention may use the method 400 shown in FIG. 7A and the method 410 shown in FIG. 7B. The difference between the two is only the steps. The sequence of the invention can be easily associated and easily completed by those with ordinary knowledge in the technical field to which the invention belongs. The method 400 shown in FIG. 7A enters the second mode (or standby mode) of the standby state after the sensing pad 22 of the temperature sensing device 10 is touched and leaves the first mode; the method shown in FIG. 7B 410: After the sensing pad 22 of the temperature sensing device 10 is touched and leaves the first mode, it enters a second mode for measuring temperature (or a temperature measurement mode).

Please refer to FIG. 7A, a method 400 for automatically switching modes, applicable to the temperature sensing device 10 shown in FIG. 8 entering or leaving a first mode or a second mode, including: Step 401: Touch detection, In the first mode, such as the automatic detection mode, the control unit 11 determines the sampling signal output by the touch sensing circuit to determine whether the temperature sensing device 10 leaves the first mode. When the temperature sensing device 10 is When standing still, the touch sensor 22 detects that the user has not touched, so that the control unit 11 judges the sampling signal and learns that the sensor oscillation circuit outputs a fixed frequency. Therefore, the temperature sensing device 10 continues to be in the first mode; until The sensing pad 22 of the temperature sensing device 10 is touched by a user, so that the control unit 11 judges the sampling signal and learns that the sensor oscillation circuit changes the output frequency, thereby determining to enter the working state and leave the first mode. Step 402: Start-up procedure. After the control unit 11 executes the startup procedure according to the program of the memory 17, the temperature sensing device 10 is initially set (including the control unit 11 supplying power to other blocks shown in the first figure). The measuring device 10 enters a second mode, such as a standby state or a temperature sensing mode.

Continue to refer to FIG. 7A, step 403: shake detection. In the second mode, the control unit 11 detects a change in the potential of the pin to determine whether the detection unit 21 senses the shake. If there is a shake, the control unit 11 executes the temperature calculation process of step 404, and if it does not shake, the control unit 11 executes the shutdown time count of step 406. In another embodiment of the present invention, in the second mode, in step 403, the control unit 11 can determine whether the function key 13 is pressed. If the function key 13 is pressed, the control unit 11 executes the temperature calculation process in step 404. If the function key 13 is not pressed, the control unit 11 performs a shutdown time count of step 406. In addition to triggering the temperature measurement function, the function key 13 also has a shutdown function. When the function key 13 is continuously pressed for a period of time, it immediately enters a shutdown state. Step 404, temperature calculation processing. The control unit 11 enables the digital proximity sensor 14 and the thermopile temperature sensor 15 to sense the measurement data of the human body, and then calculates the ear temperature or the forehead temperature of the human body, and then the control unit 11 Step 405 is executed to display the measurement data. In step 405, the measurement data is displayed, and the control unit 11 displays the calculated ear temperature or forehead temperature data of the human body on the LCD display 12, returns to the second mode, and proceeds to step 403. In step 406, the shutdown time is counted. When the temperature sensing device 10 is in the second mode and the shake sensing circuit has not shaken yet, the control unit 11 starts to count the shutdown time and executes the shutdown time judgment in step 407. Step 407, the shutdown time, the control unit 11 judges that the shutdown time count result has not yet reached the shutdown time, returns to the second mode, and continues to execute step 403, until it is determined that the shutdown time count result reaches the shutdown time, the control unit 11 determines the temperature sensing The device 10 enters the first mode and executes step 401.

Please refer to FIG. 7B. The difference between the method 410 of the present invention for automatic switching mode and the method 400 shown in FIG. 9A is the order of the steps, and the same step numbers 401, 402,... Perform the same content. Therefore, in the method 410 for automatically switching modes of the present invention, after the sensing pad 22 of the temperature sensing device 10 is touched and leaves the first mode, it enters a second mode (or temperature measurement mode) for temperature measurement and step 404 is performed. , 405. To measure the temperature again or enter the second mode, the user can shake the temperature sensing device 10 again; if the temperature sensing device 10 is left still, then return to the first mode via steps 406 and 407.

Claims (14)

A temperature sensing device that automatically switches modes, comprising: a control unit that determines whether the temperature sensing device enters or leaves a first mode or a second mode; a power supply unit that provides power to the temperature sensing device; and A power circuit includes the power supply unit and is electrically connected to the control unit to provide power. The power circuit includes a detection unit which is electrically connected to the power supply unit and the control unit. The detecting unit detects the moment when the temperature sensing device is moved from the resting state, so that the control unit can determine that the temperature sensing device leaves the first mode and enters the second mode. The temperature sensing device according to item 1 of the patent application scope, wherein the detection unit includes a touch sensing circuit, and the touch sensing circuit detects a moment when the temperature sensing device is touched by a user to enable the control. The unit determines that the temperature sensing device leaves the first mode and enters the second mode. The temperature sensing device according to item 2 of the scope of patent application, wherein the touch sensing circuit is electrically connected to the power supply unit and the control unit. The temperature sensing device according to item 2 of the scope of the patent application, wherein the touch sensing circuit includes a sensor oscillation circuit having a sensing pad and an output signal, and a frequency sampling circuit for sampling the output signal. Frequency to output a sampling signal to the control unit. The temperature sensing device according to item 4 of the scope of patent application, wherein when the sensing pad is touched by a user, the sensor oscillating circuit changes the frequency of the output signal and enables the control unit through the frequency sampling circuit. It is determined that the temperature sensing device leaves the first mode and enters the second mode. The temperature sensing device according to item 1 or 2 or 3 or 4 or 5 of the scope of the patent application, wherein the second mode is a standby state, a temperature measurement mode, or a state after a startup procedure. The temperature sensing device according to item 6 of the scope of patent application, further comprising a function key to trigger the control unit to perform temperature calculation processing and display measurement data. The temperature sensing device according to item 6 of the patent application scope, wherein the detection unit further includes a shaking sensing circuit, and the shaking sensing circuit senses a shaking state of the temperature sensing device and is connected to a connection of the control unit. The potential of the foot changes, wherein the shake detection circuit includes a full-phase ball switch or a gravity sensor or a mercury switch. The temperature sensing device according to item 8 of the scope of patent application, wherein the potential change of the pin enables the control unit to perform temperature calculation processing and display measurement data. A method for automatically switching modes, suitable for a temperature sensing device entering or leaving a first mode or a second mode, comprising: providing a detection unit in the temperature sensing device, the detection unit is electrically connected to a power source A supply unit and a control unit; and using the detection unit to detect a moment when the temperature sensing device is moved from a rest state, so as to enable the control unit to determine that the temperature sensing device leaves the first mode and enters the second mode mode. The method for automatically switching modes as described in item 10 of the scope of patent application, further comprising: providing the detection unit including a touch sensing circuit, and using the touch sensing circuit to detect that the temperature sensing device is touched by a user At time, the control unit is enabled to determine that the temperature sensing device leaves the first mode and enters the second mode. The method for automatically switching modes according to item 11 of the scope of patent application, wherein the touch sensing circuit has a sensing pad, and the sensing pad is disposed on an outer surface of the temperature sensing device so as to be easily touched by a user. The method for automatically switching modes as described in item 10 of the scope of patent application, further comprising: providing the detection unit including a shaking sensing circuit, and using the shaking sensing circuit to sense a shaking state of the temperature sensing device to be associated with the The potential of a pin of the control unit changes to enable the control unit to perform temperature calculation processing and display measurement data. The method for automatically switching modes as described in item 10 of the scope of patent application, wherein the second mode is a standby state, a temperature measurement mode, or a state after a startup procedure.