JPH0677914A - Wireless monitoring system - Google Patents

Abstract

PURPOSE:To monitor the state of a device to be monitored at a monitoring device without wiring any cable at a distant place. CONSTITUTION:A transmission part 2 provided on the side of a serial transmission unit 1 transmits data on the transmission line of the serial transmission unit 1 with a radio signal composed of radio waves. A monitoring device 3 receives the radio signal from the transmission part 2 through an antenna 7 at a reception part 4 and under the control of a display control part 6, the received data are displayed by a display device 5.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to wireless monitoring systems.

[0002]

2. Description of the Related Art Conventionally, a monitoring device for a serial transmission unit or a programmable controller is wired to be connected to the serial transmission unit or the program controller.

[0003]

When using the above-mentioned wired monitoring device,
It cannot be installed at a position far away from these serial transmission units, which are monitored devices, or the programmable controller, due to cable wiring restrictions, and the inside of the control panel where these serial transmission units and PCs are installed is narrow. In that case, there was a problem that the cable or output unit connected to the monitoring device could not be inserted.

The present invention has been made in view of the above-mentioned problems, and the object thereof is to monitor the state of a monitored device by a monitoring device without wiring a cable at a distant place. Another object of the present invention is to provide a wireless monitoring system capable of monitoring even a position away from a monitored device.

[0005]

According to a first aspect of the present invention, there is provided a transmitter for transmitting status data of a monitored device by a radio signal, a receiver for receiving a radio signal transmitted from the transmitter, and a receiver. The monitoring device includes a notification unit that notifies the state of the monitored device based on the received and extracted state data.

According to a second aspect of the present invention, the status data on the transmission path of the serial transmission unit, which is the monitored apparatus, is transmitted by the transmission section, and the status data received and extracted by the reception section in the monitoring apparatus is displayed on the display unit of the notification section. To do. According to a third aspect of the present invention, when there is an abnormality in the programmable controller that is the monitored device, the transmitting unit transmits the abnormality occurrence data by radio waves, and the monitoring device notifies the notification unit based on the abnormality occurrence data received and extracted by the receiving unit. To do.

According to a fourth aspect of the present invention, the notifying unit comprises a voice output device. According to a fifth aspect of the invention, the notification unit includes a vibration generator.

[0008]

In the configuration of the invention of claim 1, the transmitter for transmitting the status data of the monitored device by a radio signal, the receiver for receiving the radio signal transmitted from the transmitter, and the state of reception and extraction by the receiver. Since it is configured with a monitoring device that includes a notification unit that notifies the status of the monitored device based on data, it is not necessary to connect a cable to the monitored device, and therefore there is a restriction on the wiring of the cable. Alternatively, the state of the monitored device can be monitored even by a monitoring device installed at a distance from the monitored device.

According to the second aspect of the present invention, the data on the transmission path of the serial transmission unit is displayed on the display of the notification unit without being restricted by the space of the control panel on which the motherboard on which the serial transmission unit is mounted is installed. It can be visually confirmed on the display of the device. In the configuration of the invention of claim 3, the occurrence of abnormality of the programmable controller can be monitored by the monitoring device installed at a distant place, and in the configuration of the invention of claim 4, it is possible to reliably notify the occurrence of abnormality of the programmable controller by voice output. According to the fifth aspect of the invention, it is possible to reliably notify the occurrence of an abnormality in the programmable controller by the occurrence of vibration.

[0010]

EXAMPLES The present invention will be described below with reference to examples. (Embodiment 1) This embodiment is for monitoring data on a transmission line of a serial transmission unit, and as shown in FIG. 1, a transmission section including a modulator, a high frequency oscillator and the like provided on the serial transmission unit 1 side. 2 and the monitoring device 3 constitute a wireless monitoring system. The transmission unit 2 is the serial I / F unit 1 of the serial transmission unit 1.
The data on the transmission path connected to 3 is transmitted by a radio signal composed of radio waves. On the other hand, the monitoring device 3 includes a receiving unit 4 that receives a wireless signal from the transmitting unit 2 through the antenna 7, and a notification unit that includes a display control unit 6 that causes the display device 5 to display the received status data. The receiving unit 4 is composed of a receiver 7 and a demodulator 8.

The serial transmission unit 1 includes a CPU 9 and an RO
It is a well-known device that is composed of an M10, a RAM 11, a bus control unit 12, and the serial I / F unit 13. Thus, the transmitter 2 always transmits the data on the transmission path of the serial transmission unit 1, the monitoring device 3 receives the data, and the display device 5 displays the data.

(Embodiment 2) This embodiment is for monitoring an abnormal state of a programmable controller (hereinafter abbreviated as PC), and as shown in FIG. 2, the parallel I / F unit 15 of the PC 14 or the serial I / F unit 15 is used. A transmission unit 18 and a reception unit 19 that exchange data with the CPU 17 of the PC 14 through the F unit 16 and transmit / receive data with the monitoring device 3 are provided on the PC 14 side.

On the other hand, in the monitoring device 3, a receiver 20 for receiving and demodulating a radio signal composed of radio waves transmitted by the transmitter 18, and transmission data for performing status monitoring of the PC 14 are transmitted to the PC 14 side by radio signals composed of radio waves. Based on the transmitting unit 21 for transmitting and the presence or absence of the received signal from the PC 14 side received by the receiving unit 20, the abnormality of the PC 14 is notified by voice output, and the transmitting unit 21 for the status monitor is controlled. Audio output control unit 22
And an alerting unit. The transmitter 21 is the modulator 2
3 and a high-frequency oscillator 24, and the receiving unit 20 includes a receiver 25 and a demodulator 26.

The transmitter 18 and receiver 1 on the PC 14 side
9 has the same configuration as the transmitting unit 21 and the receiving unit 20. The PC 14 has a CPU 17, a ROM 27, a RAM 28,
Bus control unit 29, serial I / F unit 16 and parallel I
This is a well-known one that is composed of the / F section 15. Thus, in normal times, the transmission data for the status monitor is transmitted from the monitoring device 3 at regular intervals through the transmission unit 21. In the PC 14, the receiving unit 19 receives and demodulates this transmission data, and the serial I / F unit 16 or the parallel I / F unit 16
It is sent to the CPU 17 through the F section 15. When the CPU 17 operates normally, the response data is sent to the serial I / F unit 1
6 or the parallel I / F unit 15 to the transmitting unit 18, and the transmitting unit 18 transmits the response data.

The audio output control unit 22 of the monitoring device 3
If this response data is received by the receiving unit 20, the PC
14 is determined to be normal. Then, in the non-response state in which the response data is not received, it is determined that there is an abnormality on the PC 14 side, and the abnormality is notified by voice output. This non-responsive state occurs due to a runaway of the CPU 17, a power failure, or the like.

On the other hand, when an abnormality such as an I / O error, a connection unit abnormality, or a calculation error occurs, the CPU 17 of the PC 14
If it is determined by the monitoring device 3 that the data indicating the occurrence of the abnormality is given to the transmission unit 18,
Send to. When the monitoring device 3 receives the data indicating the occurrence of the abnormality, the abnormality is notified by the voice output of the voice output control unit 22 as in the status monitor.

(Third Embodiment) In the second embodiment, the abnormality is notified by voice output. However, when the surrounding sound is noisy, the abnormality may not be noticed.
Therefore, in the present embodiment, the monitoring device 3 is assumed to be portable, and a vibration output control unit 30 for vibrating the body of the monitoring device 3 is provided instead of the voice output control unit 22. That is, the abnormality is notified by the vibration of the body. Therefore, the user can know the occurrence of the abnormality in the PC 14 even in a noisy site. Since the configuration other than the vibration output control unit 30 is the same as that of the second embodiment, the description thereof is omitted.

[0018]

According to the first aspect of the present invention, the transmitting section for transmitting the status data of the monitored device by the radio signal, the receiving section for receiving the radio signal transmitted from the transmitting section, and the state received and extracted by the receiving section. Since it is configured with a monitoring device that includes a notification unit that notifies the status of the monitored device based on data, it is not necessary to connect a cable to the monitored device, and therefore there is a restriction on the wiring of the cable. Instead, there is an effect that the state of the monitored device can be monitored even by a monitoring device installed far away from the monitored device.

According to a second aspect of the invention, the status data on the transmission path of the serial transmission unit, which is the monitored apparatus, is transmitted by the transmission section, and the status data received and extracted by the reception section in the monitoring apparatus is displayed on the display unit of the notification section. Therefore, the data on the transmission path of the serial transmission unit can be displayed on the display unit of the notification unit without being restricted by the space of the control panel on which the motherboard on which the serial transmission unit is installed is installed. There is an effect that can be confirmed in.

According to a third aspect of the present invention, when there is an abnormality in the programmable controller that is the monitored device, the transmitting unit transmits the abnormal occurrence data by radio waves, and the monitoring device notifies the abnormality generating data received and extracted by the receiving unit. Since it is notified by the department, there is an effect that the abnormality occurrence of the programmable controller can be monitored by a monitoring device installed at a distant place. In particular, according to the invention of claim 4, the occurrence of an abnormality in the programmable controller can be notified by voice output, so that the occurrence of an abnormality can be reliably notified. Further, in the invention of claim 5, since the abnormality occurrence of the programmable controller is notified by the occurrence of vibration, the user can be sure to inform the user of the abnormality occurrence of the programmable controller even in a noisy manufacturing site or the like by carrying the user. You can

[Brief description of drawings]

FIG. 1 is a circuit block diagram of a first embodiment of the present invention.

FIG. 2 is a circuit block diagram of a second embodiment of the present invention.

FIG. 3 is a circuit block diagram of a third embodiment of the present invention.

[Explanation of symbols]

 1 Serial Transmission Unit 2 Transmitter 3 Monitoring Device 4 Receiver 5 Display Device 6 Display Controller 7 Antenna

Claims (5)

[Claims] 1. A status of a monitored device based on a transmitter that transmits status data of the monitored device as a radio signal, a receiver that receives a radio signal transmitted from the transmitter, and status data received and extracted by the receiver. A wireless monitoring system comprising: a monitoring device including an informing unit for informing. 2. The status data on the transmission path of the serial transmission unit, which is the monitored apparatus, is transmitted by the transmission section, and the monitoring apparatus displays the status data received and extracted by the reception section on the display unit of the notification section. The wireless monitoring system according to claim 1. 3. When the programmable controller as the monitored device has an abnormality, the transmitting unit transmits the abnormality occurrence data by radio waves, and the monitoring device notifies the abnormality generating data based on the abnormality occurrence data received and extracted by the receiving unit. The wireless monitoring system according to claim 1, wherein: 4. The wireless monitoring system according to claim 3, wherein the notification unit comprises a voice output device. 5. The wireless monitoring system according to claim 3, wherein the notification unit includes a vibration generator.