JPH0748778B2 - Terminal device - Google Patents

Description

The present invention relates to a terminal device, and more particularly to a terminal device having improved reliability of an intercom as an emergency call means included in the terminal device.

<Prior Art> For example, a terminal device such as an elevator device is provided with an intercom as an emergency call means, and this intercom uses a battery as a power source as described in Japanese Utility Model Publication No. 59-21177. Use to make an emergency call.

As described above, the life of batteries used as a power source for power failure compensation varies greatly depending on the operating conditions and environmental conditions, but the battery replacement cycle is based on the average battery operating life under normal operating conditions. Is set.

And the battery is replaced with a new one every replacement cycle,
Maintenance is performed so that the intercom always operates normally in an emergency.

<Problems to be Solved by the Invention> As described above, the intercom included in the terminal device is
In an emergency, it is always required to operate normally.

On the other hand, the life of batteries used as a power supply for power failure compensation varies greatly depending on the operating conditions and environmental conditions, so make sure that the battery always maintains a sufficient voltage as a power supply for power failure compensation in an emergency. Requires the exchange period to be considerably shorter than the value obtained from the average use condition.

If this replacement cycle is lengthened, the battery may deteriorate and a call failure accident may occur. Since it is required to shorten the replacement cycle by giving priority to the prevention of call failure, maintenance cost must be increased. It was profitable.

The present invention has been made in view of the current state of the terminal device of this kind as described above, and the purpose thereof is to be able to efficiently replace the battery and reduce the maintenance cost. It is an object of the present invention to provide a terminal device capable of realizing reliability of operation and reduction of maintenance cost without causing a call failure due to deterioration of battery.

<Means for Solving Problems> In order to achieve the above-mentioned object, the present invention is connected to a subscriber telephone line and is used as a power source by being shared by a slave unit, a master unit, and both the slave unit and the master unit. In a terminal device provided with an interphone including a battery and a battery charging unit, a power supply monitoring unit that monitors whether an error occurs in the battery of the interphone and whether the battery recovers from an abnormal state, and the child. Intercom monitoring means for monitoring whether or not an abnormality has occurred in the signal transmission between the master unit and the master unit, and whether or not an abnormality has occurred in the battery based on the monitoring signal output from the power source monitoring means, and the battery is abnormal. It is determined whether or not the state is recovered, and based on the monitoring signal output from the intercom monitoring means, mutual communication between the child device and the parent device is performed. A microcomputer circuit for determining whether an abnormality has occurred in signal transmission between the two is provided, and when it is determined that an abnormality has occurred in the battery in this microcomputer circuit, when it is determined that the battery has recovered from the abnormal state, and When it is determined that an abnormality has occurred in the signal transmission between the slave unit and the master unit, a power supply information signal related to a power source abnormality is sent to another terminal device via the subscriber telephone line, and the slave unit and the master unit mutually. And a notification means for transmitting a response abnormality signal relating to a signal transmission abnormality between the two.

<Operation> In the present invention, when a state change such as a voltage drop occurs in the battery which is the power source of the intercom, the power source monitoring means detects this and the microcomputer circuit detects the state change of the battery based on the monitoring signal of the power source monitoring means. Thus, it is determined that the power state of the intercom has changed. When the microcomputer circuit determines that there is a change in the power supply status of the intercom in this way, the reporting means causes another terminal device, for example, the maintenance center of the maintenance company, to receive a long-term power failure or charging circuit via the subscriber telephone line. A power status signal indicating that the power status of the interphone has changed due to abnormalities, over-discharge, capacity deterioration, etc. is transmitted.

Also, when an abnormality occurs in the signal transmission between the intercom slave unit and the master unit, the intercom monitoring unit detects this and the microcomputer circuit detects the abnormality between the slave unit and the master unit based on the monitoring signal of the intercom monitoring unit. It is determined that an abnormality has occurred in signal transmission. When the microcomputer circuit determines that an abnormality has occurred in the signal transmission between the slave unit and the master unit in this way, the reporting unit causes the other unit to notify the slave unit and the master unit via the subscriber telephone line. A response abnormality signal related to a signal transmission abnormality between the two is transmitted.

In this way, the power supply, slave unit, and
It is possible to realize highly accurate monitoring of the entire intercom including the master device in another terminal device connected to the terminal device via a telephone line.

<Example> Hereinafter, an example of the present invention will be described in detail with reference to the block diagram showing the configuration of the example.

As shown in the figure, the battery 9 is connected to the output terminal of the battery charging means 10, and the battery 9 supplies power to the intercom master unit 7 and the intercom slave unit 8. Power terminal 20
AC power is being supplied by.

The intercom base unit 7 and the intercom slave unit 8 described above are connected to each other by a signal line 23, one end of a signal line 24 is connected to the signal line 23, and the other end of the signal line 24 is a power source monitoring means. 5, intercom monitoring means 17, intercom control means 18, and intercom telephone network connection means 19 are respectively connected.

Further, the output terminals of the power source monitoring means 5 and the intercom monitoring means 17 are connected to the input means 15 of the microcomputer circuit 6, and the input terminals of the intercom control means 18 are connected to the output means 16 of the microcomputer circuit 6, thereby intercom telephone network. Connection means 19
The output terminal of is connected to the modulation / demodulation means 4.

The modulation / demodulation means 4 is used by the network control means 2 and the selection means 3.
The network control means 2 is connected to the subscriber telephone line via the terminal 21.

Further, the modulation / demodulation means 4 is connected to the serial / parallel conversion means 14 of the microcomputer circuit 6, the serial / parallel conversion means 14 is connected to the data line 25, and the output means 16 and the input means 15 are connected to the data line 25. It is connected.

The data line 25 is connected to the microprocessor 1
1, RAM13 and ROM12 are connected.

In the embodiment of the present invention having such a configuration, the intercom 22 is composed of the battery 9, the battery charging means 10, the intercom master device 7 and the intercom slave device 8.

Further, the serial-parallel conversion means 14, the RAM 13, the ROM 12, the microprocessor 11, the input means 15 and the output means 16 constitute the microcomputer circuit 6.

Further, the network control means 2, the selection means 3, the modulation / demodulation means 4, the power supply monitoring means 5, the intercom monitoring means 17, the intercom control means 18, the intercom telephone network connection means 19, and the microcomputer circuit 6 constitute the terminal device main body 1, The terminal device body 1 and the intercom 22 constitute a terminal device.

The voltage of battery 9 constitutes the power supply voltage of the intercom.

The operation of the embodiment of the present invention having the above-described structure will be described below.

The power supply monitoring means 5 detects the voltage of the battery 9 at predetermined time intervals, and the obtained monitoring signal is input to the microcomputer circuit 6 via the input means 15.

This supervisory signal is subjected to shaping processing by removing disturbance such as noise by the microprocessor 11, and is processed as a supervisory information signal corresponding to the power supply voltage of the intercom.
Memorized in.

The microprocessor 11 reads the previous monitoring information signal and the current monitoring information signal stored in the RAM 13,
If the previous monitoring information signal is within the normal value range and the current monitoring information signal is within the normal value range by comparing and calculating both, it is determined that there is no change in the intercom power supply state.

Also, if the previous monitoring information signal is out of the normal value range and the monitoring information signal this time is out of the normal value range,
It is determined that the intercom power supply state has not changed.

If the previous monitoring information signal is within the normal value range and the current monitoring information signal is out of the normal value range,
It is determined that an error has occurred in the intercom power supply status.

Furthermore, if the previous monitoring information signal is out of the normal value range and the monitoring information signal this time is in the normal value range,
It is determined that the intercom power supply status error has recovered.

If it is determined that an abnormality has occurred in the intercom power supply state based on such determination, and if it is determined that the abnormality in the intercom power supply state has recovered, the microprocessor 11 selects the network control unit 2, The means 3 and the modulation / demodulation means 4 are controlled, the selection signal is sent from the selection means 3, and the network control means 2 controls the telephone network.

Then, a power supply information signal indicating occurrence or recovery of abnormality of the intercom power supply state is modulated by the modulation / demodulation means 4 and transmitted to the monitoring center of the maintenance company, which is another terminal device, through the subscriber telephone line. .

In the embodiment, if it is determined by the microprocessor 11 described above that the intercom power supply state has not changed, if there is a request from another terminal device, the power supply information signal is transmitted via the subscriber telephone line. Transmitted.

In this case, in response to the transmission of the request signal at predetermined intervals performed by the monitoring center of the maintenance company, which is another terminal device, a power supply information signal indicating the occurrence or recovery of the above-mentioned intercom power supply state abnormality is transmitted. It can also be transmitted to another terminal device.

On the other hand, the intercom monitoring unit 17 uses the intercom slave unit 8
From the intercom master unit 7 to the intercom master unit 7, and the response signal of the intercom master unit 7 in response to the call signal.

The monitoring signal from the intercom monitoring means 17 is the microprocessor 11 for the monitoring signal corresponding to the call signal.
Accordingly, the processing for removing the call due to noise or mischief is performed, and is stored in the RAM 13 as call monitoring information.

Further, the monitoring signal corresponding to the response signal is also processed by the microprocessor 11 to remove the influence of noise and the like, and stored in the RAM 13 as response monitoring information.

Then, the response delay time from the generation of the call monitoring information to the generation of the response monitoring information is calculated by the microprocessor 11, and if the calculated value is less than or equal to a predetermined value, it is determined that the intercom base unit 7 has a normal response. And wait for the end of the intercom 22 call.

If the calculated value is equal to or larger than the predetermined value, it is determined that the intercom master unit 7 does not respond and an abnormal response occurs in the intercom.

Then, the microprocessor 11 controls the network control means 2, the selection means 3 and the modulation / demodulation means 4, and other terminals are connected via the subscriber telephone line as in the case where the response abnormality signal is the power source information signal. It is transmitted to the monitoring center of the maintenance company that is the device.

Further, in this case, the intercom telephone network connection means 19 is controlled to form a communication path between the intercom slave 8 and the other terminal device described above.

Therefore, a call between the intercom slave 8 and the other terminal device described above becomes possible, and even if an unresponsive accident occurs in the intercom master device 7, an emergency call is made between the intercom slave 8 and the other terminal device described above. Can be done.

In this way, according to the embodiment of the present invention, the power supply information signal of the intercom is notified to the monitoring center of the maintenance company, so that the long-term power failure charging circuit of the AC power supply is abnormal, over-discharge, capacity deterioration, etc. The voltage drop of the battery 9 caused by the above can be grasped at the above-mentioned monitoring center.

Therefore, the replacement of the battery 9 and the repair of related parts can be performed quickly and efficiently, and the maintenance cost can be reduced.

Further, the intercom monitoring unit 17 monitors whether or not the response of the intercom master unit 7 is normally performed. When there is no response from the intercom master unit 7, the intercom telephone network connection unit 19 As a result, a call can be made between the intercom slave 8 and the inspection center of the maintenance company, so that it is possible to always deal with the occurrence of abnormal situations and improve the serviceability.

<Effects of the Invention> As described in detail above, according to the present invention, the power supply information signal indicating the power supply status of the intercom is automatically transmitted to another terminal device such as the monitoring center of the maintenance company.
Batteries can be exchanged efficiently. Along with this, a response abnormality signal related to a signal transmission abnormality between the intercom slave unit and the master unit is transmitted to the other terminal device such as the above-mentioned monitoring center, so that the malfunctioning master unit or slave unit can be promptly detected. Can be exchanged. Therefore, it is possible to perform highly accurate monitoring of the entire interphone including the battery, slave unit, and master unit, which are provided in the terminal device, in another terminal device, significantly reducing the down time of the intercom as compared with the conventional one. Therefore, the reliability of the intercom and the maintenance cost can be reduced. In addition, the monitoring center is
It is possible to provide highly reliable monitoring work with a minimum of a simple program, without the need for a program for determining battery abnormality and recovery.

[Brief description of drawings]

The drawing is a block diagram showing the configuration of the embodiment of the present invention. 1 ... Terminal device body, 5 ... Power supply monitoring means, 6 ... Microcomputer circuit, 7 ... Intercom master unit, 8 ... Intercom slave unit, 9 ... Battery, 10 ... Battery charging means, 11 ... Micro Processor, 12 …… ROM, 13 …… RA
M, 17 …… Intercom monitoring means, 18 …… Interphone control means, 19 …… Interphone telephone network connection means, 22 ……
intercom.

Claims (1)

[Claims] 1. A terminal device which is connected to a subscriber telephone line and has a slave unit, a master unit, a battery shared by both the slave unit and the master unit as a power source, and an interphone including a charging means for the battery. In the above, the power source monitoring means for monitoring whether the intercom battery is abnormal, and whether the battery is recovered from the abnormal state, and whether the signal transmission between the slave unit and the master unit is abnormal The intercom monitoring means for monitoring, and whether or not an abnormality has occurred in the battery based on the monitoring signal output from the power supply monitoring means, and whether the battery has recovered from the abnormal state, and output from the intercom monitoring means. A microcomputer circuit that determines whether an abnormality has occurred in the signal transmission between the slave unit and the master unit based on the monitoring signal When it is determined that an abnormality has occurred in the battery in this microcomputer circuit, when it is determined that the battery has recovered from the abnormal state, and an abnormality has occurred in the signal transmission between the slave unit and the master unit. When it is determined that the power supply information signal regarding the power supply abnormality and the response abnormality signal regarding the signal transmission abnormality between the slave unit and the master unit are transmitted to another terminal device through the subscriber telephone line, A terminal device characterized by the above.