JP2005078582A - Remote monitoring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a remote monitoring device capable of returning to an original program by recognizing a fault in the case of having failed in rewriting when receiving a rewriting program from a center device to rewrite an execution program. <P>SOLUTION: After the rewriting program transmitted from the center device 3 is stored in a rewriting program storage part 13, the rewriting program is used for rewriting the execution program provided for another program part 11 in a program execution part 8, and restarted as a new execution program; thereafter test annunciation is issued to the center device 3; when the test annunciation is not successfully completed within a certain period, the execution program stored in a program backup part 14 and having been executed up to then is called to write it in the other program part 11, and restarted. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  This invention automatically sends out abnormality detection information due to the occurrence of abnormality in equipment to a center device installed at a remote location via a communication line, and downloads a control program stored in the remote monitoring device from the center device. The present invention relates to a remote monitoring device having a rewriting function.

  With regard to program rewriting of a conventional remote monitoring device, for example, a remote program changing method for remotely changing a control program stored in a network device (remote monitoring device) that communicates with a monitoring control device (center device) via a network There are the following technologies. That is, when the control program is revised, the operator of the monitoring control apparatus transmits the revised new control program from the monitoring control apparatus to the network device via the network. On the network equipment side, the new control program is stored in the first storage means (RAM 5), and further transferred to and stored in the second storage means (RAM 4) to control the network equipment. If the transmission of the new control program is normally performed, the network device is operated for a certain period of time and the normal operation is confirmed, and then the new control program in the RAM 5 is stored at the storage location of the control program according to an instruction from the monitoring control device side. Transfer to a certain IC card and rewrite and store the old control program.

  If the new control program downloaded remotely from the monitoring and control device is not stored normally in the network device or if an abnormality is found in the operation check, a system reset command is sent from the monitoring and control device, and the previous remote download was successful. The new control program is read from the IC card storing the new control program at the time, transferred to the second storage means (RAM 4) for executing the program, and executed. A remote program change method has been shown in which a temporary operation can be performed with a program having a small change difference even if the number of revisions increases (see Patent Document 1).

JP-A-9-114671 (page 4, FIG. 1)

  Since the conventional remote monitoring device is configured as described above, the operation of the remote monitoring device (network device) is monitored for a certain period of time on the center device (monitoring control device) side to determine whether the revised program has been stored normally. Then, a command is issued from the center device (monitoring control device) side to perform a normal time and an abnormal time treatment. For this reason, if the remote monitoring device (network device) receives the new control program and stores it in the storage means or transfers it to other storage means, if some trouble occurs and the program does not operate normally, the center device (monitoring control device) ) Side cannot immediately recognize the situation, and even if the center device (monitoring control device) makes an inquiry later and recognizes the abnormality, the original program can be sent again via the network or the original program It was necessary to instruct the rewriting to be performed, and there were problems such as prolonged downtime.

  The present invention has been made to solve the above-described problems, and even if remote program rewriting fails, remote monitoring can recognize that the remote monitoring apparatus has failed and can return to the original program. The object is to obtain a device.

  The remote monitoring device according to the present invention has a function of monitoring equipment and transmitting the monitoring information to the center device via a communication line, and an execution program for receiving and holding a rewriting program from the center device via the communication line. A remote monitoring device having a function of rewriting a program, a storage unit that temporarily stores a rewriting program, a program execution unit that holds and executes an execution program, and a program backup unit that backs up the execution program, Store the rewrite program sent from the device in the storage unit, rewrite the execution program held by the program execution unit with the rewrite program, and then restart with this new execution program. A test is issued to the center device, and the test is successfully issued within a certain time. Itoki are those configured so as to restart the write execution program that has been backed up to the program backup unit determines that the rewrite fails to program execution unit, replaced by a new execution program.

  According to the present invention, the program backup unit for backing up the execution program is provided, and after the restart by the new execution program downloaded from the center device and rewritten, the test notification for the test is executed to the center device. If the test report is not successful within a certain period of time, the program was backed up to the original execution program that was backed up in the program backup unit and restarted, so the program could not be rewritten remotely from the center unit. Even in this case, the remote monitoring device can quickly recognize that the failure has occurred, so that it is possible to quickly return to the original program and shorten the downtime.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing the configuration of the remote monitoring apparatus according to Embodiment 1, and FIG. 2 is a flowchart showing its operation. In FIG. 1, a remote monitoring device 1 is connected to a center device 3 via a communication line 2 such as a telephone line, and is connected to a facility device 4 to be monitored. The remote monitoring device 1 includes a CPU 5 that controls the remote monitoring device 1, a communication line interface unit 6 that communicates with the center device 3 via the communication line 2, a facility device interface unit 7 that communicates with the facility device 4, and a CPU 5. Is provided with a program execution unit 8 that holds a program to be executed and a work area 9 for the CPU 5 to perform various processes. The program execution unit 8 includes a remote rewrite processing unit 10, other program units 11, and a start state management unit 12, and the work area 9 executes a rewrite program storage unit 13 that temporarily stores a rewrite program. A program backup unit 14 for backing up the program and other work areas 15 are provided.

  Here, the remote rewrite processing unit 10 has a processing function for storing a rewrite program transmitted from the center apparatus 3 via the communication line 2 or reading it and rewriting it to another location. Yes. The other program part 11 is a place mainly holding an execution program being executed or a program to be executed in the future. The start state management unit 12 stores the state when the program is started, that is, when the program is rewritten, for example, “remote rewriting” and when it is normal, “normal start” is replaced with, for example, a code. doing. In the following description, such a state is expressed as a value of “remote rewrite execution”, for example.

  Next, an example of the operation will be described with reference to the flowchart of FIG. First, the CPU 5 checks whether or not the content of the start state management unit 12 is a value of “remote rewrite execution” (S1). “Remote rewriting” is a state in which a rewriting program is downloaded from the center apparatus 3 and stored in the rewriting program storage unit 13 immediately before the start. If the value is not “remote rewrite” in step 1, the contents of the other program unit 11 (the other program unit 11 stores the execution program that has been executed so far) are stored in the program backup unit 14. Write (S3), the same contents as the program execution unit are saved, and the process proceeds to normal processing (S5).

  Next, whether or not there is a remote rewrite instruction from the center apparatus 3 is always checked (S7), and otherwise normal processing is continued (S5). If there is, the rewrite program received from the center apparatus 3 is The rewrite processing unit 10 temporarily stores it in the rewrite program storage unit 13 (S8), sets the start state of the start state management unit 12 to the value of “remote rewrite” (S9), and then executes the execution program once. And the rewriting program stored in the rewriting program storage unit 13 is written in the other program unit 11 (S10), and this is used as a new execution program to restart the CPU 5 (S1l).

  If the content of the start state management unit 12 is “remote rewrite” in step 1, the start state of the start state management unit 12 is set to the “normal start” value (S2), and whether or not the download is successful. To test the center device 3 and check whether the test notification is successful within a predetermined time (S4). If the test report is successful, the process returns to normal processing (S5). If the test report fails, the execution program stored in the program backup unit 14 is read and written in the other program unit 11 (S6). The CPU returns to the original execution program that was used until the CPU is restarted (S1l).

  As described above, according to the embodiment of the present invention, the program is provided with a program backup unit, the program is downloaded from the center device, and the program is restarted by the new execution program which is rewritten, and then the test device is notified to the center device. If the program is not successful within a certain period of time, the program is backed up to the original execution program that was backed up in the program backup unit and restarted, so even if the program cannot be rewritten remotely from the center unit, the remote monitoring device You can quickly recognize the failure on the side, so you can quickly return to the original program.

  In the above description, in step 4, whether or not the rewriting is successful, that is, whether or not the execution program stored in the program backup unit 14 is written back to the other program unit 11 is tested to the center device 3. Instead of this, it was judged whether or not the report was successful within a certain time. Instead, after restarting with the new execution program, it communicated with the equipment to be monitored after step 2. A configuration may be adopted in which it is determined that the rewriting has failed when the communication is not successful within the time.

  If such a criterion is used, the determination is made based on the communication status with the monitoring target equipment, which is the final purpose of the monitoring, so that a more reliable determination can be made. If combined, the diagnostic rate of the remote program rewriting result can be improved.

Embodiment 2. FIG.
Since the configuration of the remote monitoring apparatus according to the second embodiment is the same as that of FIG. 1 described in the first embodiment, the description of the configuration is omitted. FIG. 3 is a flowchart showing an example of the operation of the remote monitoring apparatus according to the second embodiment. Hereinafter, the operation will be described according to FIG. 3 with reference to FIG.

  First, the CPU 5 checks whether or not the content of the start state management unit 12 is a value of “remote rewriting” (S21). If the value is not “remote rewrite execution”, it is checked whether or not the content of the start state management unit 12 is “remote rewrite failure” (S22). Here, if the value is failure, remote rewrite has failed immediately before the start of this flow, so the center device 3 is notified that remote rewrite has failed, and the start state management unit 12 is set to the value of “normal start”. (S23) The process proceeds to normal processing (S25). If the value is not “remote rewrite failure”, the contents of the other program unit 11 are written to the program backup unit 14 (S24), and the same contents as the program execution unit 8 are saved before normal processing (S25). While performing normal processing, it is always checked whether there is an instruction for remote rewriting from the center device 3 (S26). If not, normal processing is continued (S25). If there is, a rewriting program received from the center device 3 is temporarily stored. The program is stored in the rewrite program storage unit 13 (S27), the start state management unit 12 is set to the value of “remote rewrite execution” (S28), and then the rewrite program stored in the rewrite program storage unit 13 is changed to the other program. Writing to the program unit 11 (S29), and using this as a new execution program, the CPU 5 is restarted (S34).

  If the start state management unit 12 has a value of “remote rewrite” in step 21, the start state management unit 12 is returned to the “normal start” value (S30), and a test is issued to the center device 3 for a test. And checks whether the notification succeeds within a predetermined time (S31). If the notification is successful, the normal processing (S25) is executed. If the notification is unsuccessful, the execution program stored in the program backup unit 14 is executed. The read state is written in the other program unit 11 (S32), the start state management unit 12 is set to the value of “remote rewrite failure” (S33), and the CPU 5 is restarted (S34).

  As described above, according to the embodiment of the present invention, when rewriting of a program fails, information indicating that the program is restarted by returning to the execution program backed up in the program backup unit is sent to the center device. Since the notification is made, the center device can quickly know that the rewriting of the program has failed on the remote monitoring device side.

  In the above description, the judgment criterion in step 31 is determined based on whether or not the test report to the center apparatus 3 is successful within a certain time. However, as in the invention of the first embodiment, the center apparatus Instead of the test notification to 3, the process may proceed to S32 when communication with the control panel of the equipment 4 is not established within a certain time. Further, the remote rewriting failure may be determined by both the test report to the center device 3 and the establishment of communication with the equipment 4. In this way, the diagnostic rate of the remote program rewriting result can be increased.

  The remote monitoring device of the present invention can be applied to, for example, a remote monitoring device that monitors building facilities, elevator control devices, and the like from a distance, and can improve monitoring accuracy.

It is a block diagram which shows the structure of the remote monitoring apparatus by Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the remote monitoring apparatus by Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the remote monitoring apparatus by Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Remote monitoring apparatus 2 Communication line 3 Center apparatus 4 Equipment 5 CPU 8 Program execution part 11 Other program part 12 Start state management part 13 Rewrite program storage part 14 Program backup part

Claims (3)

  A remote having a function of monitoring facility equipment and transmitting the monitoring information to the center device via a communication line, and a function of receiving a rewriting program from the center device via the communication line and rewriting an held execution program The monitoring apparatus includes a storage unit that temporarily stores the rewriting program, a program execution unit that holds and executes the execution program, and a program backup unit that backs up the execution program, and is transmitted from the center device. The rewriting program that has been stored is stored in the storage unit, and the execution program held by the program execution unit is rewritten to the rewriting program as a new execution program, and the new execution program is restarted. After that, a test is issued to the above center device and When the test report is not successful, it is determined that rewriting has failed and the execution program backed up in the program backup unit is written to the program execution unit and replaced with the new execution program and restarted. Features remote monitoring device.   A remote having a function of monitoring facility equipment and transmitting the monitoring information to the center device via a communication line, and a function of receiving a rewriting program from the center device via the communication line and rewriting an held execution program The monitoring apparatus includes a storage unit that temporarily stores the rewriting program, a program execution unit that holds and executes the execution program, and a program backup unit that backs up the execution program, and is transmitted from the center device. The rewriting program that has been stored is stored in the storage unit, and the execution program held by the program execution unit is rewritten to the rewriting program as a new execution program, and the new execution program is restarted. After that, it communicates with the equipment and the communication is completed within a certain time. If not, it is determined that rewriting has failed, and the execution program backed up in the program backup unit is written to the program execution unit and replaced with the new execution program and restarted. apparatus.   3. The remote monitoring device according to claim 1, wherein when the rewriting failure is determined, information on the rewriting failure is reported to the center device.

Images