JPS58151722A - Data transmitter containing no carrier oscillator - Google Patents

Abstract

PURPOSE:To eliminate or reduce a power supply and an oscillating element, by providing the fields of a high-frequency electromagnetic field, magnetic field, ultrasonic wave, etc. for the oscillating energy in a space and then absorbing this oscillating energy. CONSTITUTION:The energy is received by a wave receiver 9 from a field 8 of oscillting energy formed in a space and then rectified by a rectifying circuit 10 to drive a frequency dividing or multiplying circuit 11, a code data producing circuit 3 and a modulating circuit 12. At the same time, a carrier wave is obtained directly from the AC component of the field 8 of the oscillating energy received by the receiver 9 or after division or multiplication performed through the circuit 11. This carrier wave is applied to a modulating circuit 12. Then a clock signal obtained in the same way is applied to a code data producing circuit 3 such as a microcomputer, etc. The output data of the circuit 3 is applied to the circuit 12 to give modulation to the carrier wave. This modulated carrier wave is transmitted to the outside through a coupler 13 like an antenna, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an identification data transmitting device that has a built-in IC or the like that can read data in a non-contact manner and is suitable for identification purposes.

The conventional equipment in this building uses batteries (1
), and required a carrier wave oscillation circuit (2) and clock oscillation circuits (2) and (4) for the code data generation circuit (3). As the oscillation frequency determining elements of these oscillation circuits (2) and (4), time constant circuits consisting of a crystal oscillator (5), a resistor (6), and a capacitor (7) were used, making them expensive and large. , it had drawbacks such as low frequency accuracy and instability.

Furthermore, since the battery (1) is a consumable item, maintenance is troublesome and uneconomical, as it needs to be replaced periodically.

In order to eliminate these drawbacks, this invention provides a field of vibrational energy such as a high-frequency electromagnetic field, a magnetic field, or an ultrasonic field in space, absorbs the energy of this field, and uses it as a power source for the device.
In addition, carrier waves and clock signals are generated by directly or by multiplying or dividing the alternating current component of the field, thereby eliminating or reducing the need for an oscillation circuit and oscillation elements.

FIG. 2 shows a data transmitting device of the present invention. FIG. 2 is a block diagram showing one example, and includes a field of vibrational energy (8) formed in space and a receiver (9) that receives the energy.
), a rectifier circuit (10) that rectifies the received energy into DC power, a frequency divider or multiplier circuit (11) that divides or multiplies the AC component of the received energy, and the output of this circuit (11). a code data generation circuit (6) that operates as a clock signal, a modulation circuit (12) that uses the output of the circuit (11) as a carrier wave and modulates it with the output of the code data generation circuit (3), and an antenna that sends out the modulated output. A frequency divider or multiplier circuit (11)
, the code data generation circuit (3), and the modulation circuit (12) are configured to be driven by the output of the rectifier circuit (1o).

It's a field of vibrational energy (8) received by the receiver (9)
Divide or multiply the alternating current component (point # in Figure 2) using a frequency divider or multiplier circuit (11), apply the high frequency carrier wave to the modulation circuit (12), and do the same thing. A strong clock signal table is applied to a code data generation circuit (3) such as a microcomputer, and the output data of this code data generation circuit (3) is applied to a modulation circuit (12) to modulate a carrier wave. is sent out from a coupler (13) such as an antenna.

With the above configuration, two sets of oscillation circuits (2) and (4) for carrier waves and clocks are not required, and the vibration energy field (8) of high-frequency electromagnetic fields and ultrasonic waves is eliminated. If a crystal oscillator is used as the oscillation element of the generator, the frequency accuracy and stability of the transmission and clock signals will be extremely high. Furthermore, since the alternating current component of the field (8) and the output data are synchronized in a specific relationship, it is also easier to decode the data at the receiving end of the modulated carrier wave.

In addition, since there is no need for batteries or external terminals, it has a watertight or airtight structure that improves environmental resistance, improves reliability, and requires almost no maintenance. It is useful because it is economical because it is unnecessary.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a conventional data transmitting device. FIG. 2 is a block diagram showing an embodiment of a data transmitting device according to the present invention. 8 Vibration energy fields such as high frequency electromagnetic fields and ultrasonic waves 9 Receiver 10 Rectifier circuit 11 Frequency divider circuit or multiplier circuit 12 Modulation circuit 13 Coupler such as transmitting antenna Figure 1, '':/' Iku 2

Claims (1)

[Claims] A receiver that receives energy in an alternating energy field formed in space, a rectifier circuit that obtains υ curved power from the energy received by the receiver, and an alternating current of the received energy. A carrier wave source that divides, multiplies, or divides the frequency of a component, a code data generation circuit that uses the signal obtained from the carrier wave source as a clock signal, and modulates the carrier wave by the output of the code data generation circuit. data without a carrier wave oscillator, characterized in that the DC power obtained by the rectifier circuit drives the multiplier iN+ frequency circuit, the code data generation circuit, and the modulation circuit; Transmitting device.