JPH05199677A - Remote monitoring device - Google Patents

Abstract

PURPOSE:To easily perform performance tests on a battery which supplies DC power to an abnormality alarming circuit. CONSTITUTION:The title monitoring device is provided with an abnormality alarming circuit 10A which alarms the occurrence of abnormality to a remote monitoring center through a telephone line when the occurrence of abnormality is detected from a facility, DC power source circuit 3 which supplies DC power to the circuit 10A, battery 5 which supplies DC power to the circuit 10A when the circuit 3 becomes abnormal, and battery voltage detection circuit 6 which discriminates whether or not the voltage value of the battery 5 is normal by detecting the voltage of the battery 5. In addition, a battery output control circuit 7 which maintains the battery 5 in a standby state for output upon receiving the output of the circuit 6 indicating the normal voltage of the battery 5 and battery-cutting switch 17 which inactivates the circuit 7 by temporarily breaking the detecting output of the circuit 6 are also incorporated in the remote monitoring device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote monitoring device for remotely monitoring for abnormalities in various facilities in a building through a telephone line.

[0002]

2. Description of the Related Art FIG. 3 is a block diagram showing a conventional remote monitoring apparatus. In the figure, 1 is an AC power supply of, for example, 100 V supplied to a remote monitoring device, 2a is an AC power supply switch for turning on / off the output of the AC power supply 1, and 2b is a power switch 2
A power switch for battery 3 that turns on and off the output of a battery 5 described later in conjunction with a, converts an AC voltage from the AC power source 1 input via the power switch 2a into a DC voltage required in the remote monitoring device. DC power circuit for conversion, 4a is DC
An AC power supply detection relay that detects the output of the AC power supply 1 that is the input of the power supply circuit 3 and detects a power failure thereof, 4b is a single-pole double-throw contact of the AC power supply detection relay 4a, and 5 is a direct current when the AC power supply 1 has a power failure. A backup battery that supplies power to the apparatus, and 6 is a battery voltage detection circuit that detects the voltage of the battery 5 and outputs a detection signal if the voltage is normal.

Reference numeral 7 is a battery output control circuit, and as its configuration, 8a is a battery cut relay excited by a collector current of a transistor, which will be described later, which is turned on by a detection signal output from the battery voltage detection circuit 6,
Reference numeral 8b is a normally open contact of the battery cut relay 8a, and 9 is a transistor for driving the battery cut relay 8a.

Reference numeral 10 designates an abnormal alarm circuit, and its constitution 11 designates a central processing unit (CP or the like) for performing remote monitoring processing.
U) and 12 are volatile memories for storing abnormality notifications made by the CPU 11, for example RAM, and 13 are non-volatile memories for storing abnormality notification destinations (telephone numbers), such as EEPRO.
M and 14 are network control devices (NC) for capturing the telephone line of the abnormal destination according to the telephone number stored in the EEPROM 13.
U) and 15 are CPs for failure / abnormality detection signals of monitored equipment.
A monitoring input interface (I / F) for inputting to the CPU 11 through the U bus 16.

Next, the operation of the above-mentioned conventional remote monitoring device will be described. When the CPU 11 receives the equipment failure / abnormality detection signal through the monitoring input I / F 15, the EEP
The NCU 14 is activated in accordance with the telephone number of the remote monitoring center (not shown), which has been stored in advance in the ROM 13, and the abnormality notification destination is notified to the remote monitoring center. This abnormality notification is sent to the RA by the CPU 11.
It is stored in M12 and is left as a report history.

Further, since the abnormality reporting circuit 10 continuously monitors the failure / abnormality of the equipment for 24 hours, the AC power supply 1 fails during the monitoring and the supply of the DC power supply circuit 3 is stopped. A backup battery 5 is provided. As an output switching operation between the DC power supply circuit 3 and the battery 5, when the power supply switch 2a is first turned on when the DC power supply 3 is output, the output of the AC power supply 1 is input to the DC power supply circuit 3,
Here, the AC voltage of 100 V is converted into the DC voltage required to operate the abnormality alarm circuit 10.

At this time, the output of the AC power source 1 input to the DC power source circuit 3 through the power switch 2a is detected by the AC power source detection relay 4a, and when AC100V is normally detected, the contact 4b of the relay 4a is turned on. Closed to side ₁ .
As a result, the DC voltage converted and output from the DC power supply circuit 3 is supplied to the abnormality reporting circuit 10.

On the other hand, the output of the battery 5 is the power switch 2
It is supplied to the battery voltage detection circuit 6 via b and is checked whether the battery voltage value is normal. At this time, if the battery voltage value is normal, the detection signal of the battery voltage detection circuit 6 is output to the base of the transistor 9 to turn it on.

When the transistor 9 is turned on, an exciting current flows through the battery cut relay 8a, which is excited and the normally open contact 8b of the relay 8a is closed. As a result, the output of the battery 5 is applied to the b ₂ side of the contact 4b which is currently in the released state via the power switch 2 and the normally open contact 8b, and the battery operation standby state is set.

In this state, the AC power detection relay 4 is
Upon detecting a power failure of the power supply 1, the relay contacts 4b closes the b ₂ side, the power switch 2b the output from the battery 5, the normally open contact 8b, the abnormality alarm circuit via a relay contact 4b 10
Supply to. Further, when the battery voltage detection circuit 6 detects that the voltage of the battery 5 has dropped, the battery voltage detection circuit 6 becomes inoperative and stops the detection signal to the transistor 9, turning off the transistor 9 and turning off the battery. Degauss the cut relay 8a. As a result, the relay contact 8b is opened, and the battery power line to the abnormality reporting circuit 10 is cut off.

[0011]

Since the conventional remote monitoring apparatus is constructed as described above, it is possible to send a DC signal to the abnormality alarm circuit.
When power is supplied from the power supply circuit, when the battery power switch is turned off to shut off the battery power supply line for the purpose of checking the battery voltage, the AC power supply power switch is turned off and the power supply line is shut off accordingly. It was difficult to carry out a battery operation test because the operation of the battery was down.

Further, when the power switch is turned off, or when the battery power line is cut off due to a battery voltage drop, the power of the abnormality notification circuit is immediately cut off, the notification history of the RAM is erased, and the maintenance information is erased so that the subsequent maintenance is performed. There was a problem that it interfered with the work.

Further, when the maintenance information is stored in the EEPROM instead of the RAM, the writing speed of the EEPROM is slow, so that the power-down timing is E.
There is a problem in that there is a high probability of matching during the writing operation of the EPROM, the maintenance information may be erroneously written, and accurate maintenance information cannot be saved.

The present invention has been made in order to solve such a problem, and provides a remote monitoring device which facilitates a battery operation test even when the device is in operation and does not erase the maintenance information of the RAM even when the power is cut off. The purpose is to get.

[0015]

According to a first aspect of the present invention, there is provided a remote monitoring device, wherein an abnormality occurrence circuit for issuing an abnormality occurrence to a remote monitoring center through a telephone line when an abnormality occurrence of equipment is detected, and this abnormality. DC power supply circuit that supplies DC power supply to the alarm circuit, battery that supplies DC power supply when this DC power supply circuit is abnormal, and battery voltage detection that detects the voltage of this battery and detects whether or not the voltage value is normal Circuit, a battery output control circuit that receives the normal detection output of the battery voltage and maintains a battery output standby state, and the detection output of the battery voltage detection circuit is temporarily cut off, and the battery output control circuit is deactivated. This is provided with a battery cut switch for setting the state.

Further, the remote monitoring device according to the invention of claim 2 issues an abnormality reporting circuit for reporting an abnormality occurrence to the remote monitoring center via a telephone line when an abnormality occurrence of the equipment is detected, and the abnormality reporting circuit. DC power supply circuit for supplying DC power, and this D
A battery that supplies DC power when the C power circuit is abnormal,
A power source compensating means for charging the electric charge by the battery output or the DC power source output and compensating the power source of the abnormality reporting circuit when the battery output is cut off; and the power source of the power source compensating means supplies the abnormality reporting circuit with the power source. It is designed so that the processing at the time of interruption is performed.

[0017]

According to the first aspect of the invention, the battery output control circuit can be deactivated by turning off the battery cut switch that temporarily shuts off the output of the battery voltage detection circuit. A power-off state can be created, so that the battery operation test can be easily performed regardless of the operation of the abnormality notification circuit.

Further, according to the second aspect of the invention, even if the battery voltage drops and the power is not supplied to the abnormality reporting circuit, the power is supplied to the abnormality reporting circuit by the power supply compensating means, so that the abnormality is generated. The alarm circuit can perform power down processing for a certain period of time.

[0019]

EXAMPLES Example 1. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, 1, 3, 4a, 4b, 5-9,
12 to 16 are exactly the same as the above-mentioned conventional device. Two
Is a power switch for AC power supply, 10A is an abnormal alarm circuit,
11A is a CPU that performs the processing operation shown in FIG. 2 described later in addition to the original remote monitoring processing, and 17 is connected between the base of the transistor 9 and the ground to force the output of the battery voltage detection circuit 6 during the battery operation test. And a battery cut switch 18, which is a momentary switch that deenergizes the battery cut relay 8a, is connected between the power supply line and the ground, and when the battery power supply is stopped, the abnormality alarm circuit 10A
This is a power source compensating capacitor as a power source compensating means for compensating the power source of the above for a fixed time. The detection signal of the battery voltage detection circuit 6 is supplied to the base of the transistor 9 and also to the CPU 11A.

Next, the operation of this embodiment will be described with reference to the flowchart of FIG. First, when the power switch 2 is turned on, the output of the AC power supply 1 is applied to the DC power supply circuit 3 and detected by the AC power supply detection relay 4a. If the power supply voltage is normal as a result of the detection of the power supply voltage, the relay contact 4b is closed on the side of b ₁ and the output of the DC power supply circuit 3 is supplied to the abnormal alarm circuit 10A to perform the remote monitoring operation as described above. To perform.

The voltage of the battery 5 is checked by the battery voltage detection circuit 6 regardless of whether the power switch 2 is turned on. If the voltage value is normal, the transistor 9 is operated by the detection signal of the battery voltage detection circuit 6. , The battery cut relay 8a is excited. At this time, the normally open contact 8b of the battery cut relay 8a is closed to enter the battery operation standby state.

Next, when the power supply switch 2 is turned off or the AC power supply 1 fails, the AC power supply detection relay 4a detects this power cutoff and switches the relay contact 4b to the b ₂ side. As a result, the abnormal alarm circuit 10 outputs a voltage from the battery 5 which is in the battery operation standby state due to the closing of the normally open contact 8b through the normally open contact 8b and the relay contact 4b.
Supplied to A.

Furthermore, when the battery cut switch 17 is turned on for the battery operation test when the DC power is supplied from the AC power supply circuit 3, the base of the transistor 9 becomes the ground potential and the transistor 9 is turned off. The exciting current flowing through 8a is cut off and the battery cut relay 8a is demagnetized.

As a result, the normally open contact 8b of the battery cut relay 8a is opened, and the power supply from the battery 5 to the abnormality alarm circuit 10A is cut off. Further, when the battery power is cut off, the power supply to the battery output control circuit 7 is also cut off, so the normally open contact 8b maintains the open state,
The battery power supply is completely cut off. Then, in this state, the operation test on the battery 5 becomes possible.

Since the battery cut switch 14 is a momentary switch, when the hand is released from the switch lever, the battery cut switch 14 is immediately turned off, the transistor 9 is turned on, and the normally open contact 8b is closed again to set the battery operation standby state. To do.

Next, the operation of the CPU 11A in the abnormality notification circuit 10A after the battery power supply is down will be described with reference to the flowchart of FIG. Power supply compensation capacitor 1
8 is normally charged by the output of the DC power supply circuit 3 or the battery 5. If the voltage of the battery 5 drops and the power supply to the malfunction reporting circuit 10A is stopped while the CPU 11A is performing the malfunction monitoring / reporting operation of the equipment (step S-1), the power compensating capacitor 18 is used as the power supply. The CPU 11A of the abnormality reporting circuit 10A which is operating detects the battery voltage drop by the output of the battery voltage detection circuit 6 (step S-2), and moves the notification history data stored in the RAM 12 to the EEPROM 13 (step S-). 3). When the movement of the report history data is completed, the CPU
11A completes the operation and completely discharges the power supply compensation capacitor 18.

Here, the capacity of the power supply compensating capacitor 18 is determined by the CPU 11A detecting the battery power cut and RA.
It suffices if the capacity required for the operation of moving the report history data from the M12 to the EEPROM 13 is sufficient. Also, EE
Since the PROM 13 has a long access time during data writing and cannot be used for data storage in normal operation, the data moving operation is performed after the operation of the abnormality reporting circuit 10A is completed, apart from the time of battery power down.

As described above, in this embodiment, the battery 5 is irrespective of whether the power switch 2 for supplying the AC power 1 is turned on.
More power is input to the battery voltage detection circuit 6, and the battery cut switch 17 is turned on to cut off the battery power supply to the abnormality notification circuit 10A side, so that the battery operation test can be easily performed even while the apparatus is in operation. You can

Further, in this embodiment, since the power source compensating capacitor 18 is always charged by the battery 5 or the DC power source circuit 3 when the apparatus is in operation, the power source compensating capacitor 18 is charged when the battery power is cut off. It can be used as a power source of the abnormality reporting circuit 10A for a certain period of time, and the report history data which must be saved can be moved to the EEPROM 13 by the RAM.

Example 2. In the first embodiment described above, the case where the capacitor is used as the power supply compensation means of the abnormality alarm circuit 10A has been described, but a small battery may be used instead of the capacitor.

[0031]

As described above, according to the first aspect of the present invention, when the abnormality occurrence of the equipment is detected, the abnormality occurrence circuit for notifying the abnormality occurrence to the remote monitoring center via the telephone line, and the abnormality occurrence alarm is issued. DC power supply circuit that supplies DC power to the circuit, and this D
A battery that supplies DC power when the C power circuit is abnormal,
A battery voltage detection circuit that detects the voltage of the battery and detects whether the voltage value is normal, a battery output control circuit that receives the normal detection output of the battery voltage and maintains a battery output standby state, and the battery Since a battery cut switch that temporarily shuts off the detection output of the voltage detection circuit and deactivates the battery output control circuit, the battery is operated without affecting the abnormal alarm circuit that is currently operating. The effect is that the test can be conducted easily.

According to the second aspect of the present invention, when the abnormality occurrence of the equipment is detected, the abnormality notification circuit for reporting the abnormality occurrence to the remote monitoring center via the telephone line, and the DC power supply to the abnormality notification circuit are provided. A DC power supply circuit for supplying power, a battery for supplying DC power supply when the DC power supply circuit is in an abnormal state, and an electric charge is generated by the battery output or the DC power supply output, and when the battery output is cut off, the power source of the abnormality reporting circuit is compensated The power supply of this power supply compensating means enables the abnormality reporting circuit to perform processing when the power is cut off. Since the down processing can be performed by the power supply compensating means, there is an effect that the subsequent alarm work can be made effective without erasing the abnormality report history.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a remote monitoring device according to an embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of the CPU 11A in the embodiment of the present invention.

FIG. 3 is a configuration diagram showing a conventional remote monitoring device.

[Explanation of symbols]

 1 AC power supply 2 DC power supply circuit 5 Battery 6 Battery voltage detection circuit 7 Battery output control circuit 10A or more reporting circuit 17 Battery cut switch 18 Power supply compensation capacitor

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[Procedure amendment]

[Submission date] November 9, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

[Correction method] Change

[Correction content]

[Figure 3]

Claims (2)

[Claims] 1. An abnormality notification circuit for reporting an abnormality occurrence to a remote monitoring center via a telephone line when an abnormality occurrence of equipment is detected, a DC power supply circuit for supplying DC power to the abnormality notification circuit, and this DC. A battery that supplies DC power when the power supply circuit is abnormal, a battery voltage detection circuit that detects the voltage of this battery and detects whether the voltage value is normal, and a battery output that receives the normal detection output of the battery voltage. A remote control comprising: a battery output control circuit that maintains a standby state; and a battery cut switch that temporarily shuts off the detection output of the battery voltage detection circuit and deactivates the battery output control circuit. Monitoring equipment. 2. An abnormality notification circuit for reporting an abnormality occurrence to a remote monitoring center via a telephone line when an abnormality occurrence of equipment is detected, a DC power supply circuit for supplying DC power to the abnormality notification circuit, and this DC. A battery for supplying direct current power when the power supply circuit is abnormal; and a power supply compensating means for charging electric charge by the battery output or the DC power supply output and compensating the power supply of the abnormality reporting circuit when the battery output is cut off. A remote monitoring device characterized in that the abnormality reporting circuit performs processing when the power is cut off by the power supply of the power supply compensation means.