JPH02201596A - Power supply controller for fire prevention equipment - Google Patents

Abstract

PURPOSE:To reduce energy consumption by supplying power to a dip switch when a power source is turned on or at time initial time of a recovery time, reading a self-address or a self-class from the dip switch and writing the address and class to a RAM. CONSTITUTION:A receiver RE and plural repeaters T1-TN, which are terminals, are connected by a pair of power supply and signal line L and plural fire sensors DE are connected to the repeater T1. Then, the other repeaters T2-TN are same as the repeater T1. Here, when the power source is turned on or at the initial time of the recovery time, etc., a power supplying means PSW 2 supplies power to a dip switch DIP and a control means IF 3 reads the self- address from the dip switch DIP at the initial time and writes the address to the RAM. Thus, the energy consumption can be reduced in a circuit to collate the address from the receiver with the self-address and a circuit to discriminate the self-class.

Description

[Detailed description of the invention] [Industrial application field 1 The present invention relates to a power supply control device for disaster prevention equipment.

[Conventional technology] In disaster prevention equipment such as fire alarm equipment, even in a power outage state,
If the function needs to be maintained for several hours, and a fire etc. occurs during the power outage.

The emergency bell must ring for a certain period of time. For this purpose, the receiver has a built-in emergency power source (rechargeable battery).

[Problem to be solved by the invention] By the way, in polling type fire alarm equipment, each terminal such as a repeater or a fire detector has a dip switch, and the dip switch is used to set a predetermined value. The self-address and/or terminal type can be set by doing this. When a repeater is called by a receiver, the address sent by the receiver is compared with its own address, and if the two addresses match, the repeater operates according to the control details from the receiver. It is set to run.

In conventional disaster prevention equipment, current constantly flows through the dip switch circuit to check the address from the receiver with its own address and to determine its type. Since the power consumption of the circuit that performs address verification and self-type determination is relatively large,
There is a problem in that the power consumption of the entire disaster prevention equipment increases.

SUMMARY OF THE INVENTION An object of the present invention is to provide a power supply control device for disaster prevention equipment that can reduce power consumption in a circuit that performs address verification between an address from a receiver and its own address and/or determines its type. It is.

[Means for Solving the Problems J] The present invention supplies power to switch means such as a dip switch for setting the self address and/or self type at the time of power-on and/or initial recovery, and also provides power supply from the switch means to It reads its own address and/or its own type and writes it to RAM.

[Function 1] The present invention supplies power to the switch means for setting such as the dip switch at the initial time of power-on or restoration, and reads the self-address and/or the self-type from the switch means, Since the self-address and/or self-type written in the RAM are used after that, the circuit that performs address verification between the address from the receiver and the self-address and/or the circuit that determines the self-type. Power consumption can be reduced.

[Example] FIG. 1 is a block diagram showing one embodiment of the present invention.

In this embodiment, the receiver RE and a plurality of repeaters T1-TN, which are terminals, are connected, for example, by a pair of power and signal lines, and a plurality of fire detectors DE are connected to the repeater TI. There is. Further, although only the repeater TI is shown in FIG. 1, the other repeaters T2 to TN are also similar to the repeater MTl.

The repeater Tl includes a microprocessor MPU that controls the entire repeater T1, a ROMI that contains a program related to the flowchart shown in FIG. 3, a RAMI that is used as one work area, and a RAM 2 that stores the self address of the repeater T1. , a comparator CM for fire signal discrimination that detects an abnormality such as a fire, a reference voltage supply source TVG that supplies a reference voltage to the comparator CM, and a reference voltage source TVG that supplies the reference voltage to the comparator only when detecting the above abnormality. and a power control means P S W j for supplying power to the CM.

The repeater TI also includes a dip switch DIP as a switch means for setting the self-address of the repeater TI;
It has a power supply means PSW2 that supplies power to the dip switch DIP only at the initial time, a transmitting section TX having a parallel/serial converter and a transmitting circuit, and a receiving section RX having a receiving circuit and a serial/parallel converting circuit. .

FIG. 2 is a circuit diagram specifically showing the main parts in the embodiment L.

In FIG. 2, the points between each contact of the dip switch DIP and each resistor are connected to the input terminal of IF3, and a transistor TR2 is connected between each contact and ground. The power supply means PSW2 includes the transistor TR2 and the amplifier AMP, and the output of IF4 is connected to the power supply means PSW2.

Further, the power supply means PSW2 is an example of a power supply means that supplies power to the dip switch DIP at an initial time such as power-on or recovery, and the IF3 reads the self address from the dip switch DIP at the initial time. , is an example of a control means for writing to RAM.

Next, the operation of the above embodiment will be explained.

FIG. 3 is a flowchart showing the operation of the above embodiment.

First, is the power turned on by the receiver RE, or is a recovery command for fire recovery operations etc. received? ! ! When the power supply is temporarily cut off, initial processing such as clearing RAM1 and RAM2 and setting initial values is performed (si), and S2 is performed to set an ON signal to IF4.
), then read the self-address of repeater T1, which was set in advance at the time of installation, from dip switch DIF (
S3).

In other words, when the ON signal is set to IF4, the ON signal is applied to the base of the transistor TR2 via the amplifier AMP, turning on the transistor TR2, thereby supplying power to the dip switch DIP, and turning on the dip switch DIP. A signal corresponding to the set contents (self-address) of the DIP is sent to the IF3, and read data is written to the RAM2 via the IF3.

Then, when reading of the self address is completed (S4
), an OFF signal is set to IF4 (S5).

When the OFF signal is set to IF4, the transistor T
Since R2 is turned off and no current flows through the dip switch DIP from now on, after the OFF signal is set in IF4, no unnecessary current flows through the dip switch DIP. Deep switch D
Since current flows through the IP, no unnecessary power consumption occurs other than at the initial time.

When polling is received from the receiver RE, that is, when the polling address and the self address stored in RAM2 match (S6), an ON signal is set to IF2 (S7), and the comparison result of the comparator CM is IFI uses the data stored in IFI58), and
An OFF signal is set in F2 (S9).

If a fire has occurred based on the output signal of the comparator CM (SIO), a fire signal should be set in IF5 (S11), and fire information is transmitted to the receiver RE (S11).
S12).

In the above embodiment, IF3, power supply means PSW2,
IF4 may be replaced with a microcomputer.Furthermore, the power supply means PSW2 may be replaced with aT as shown in FIG.
! At the position shown, that is, between the resistor and the power supply connected in series to the passive switch DIP, the power supply fj,
You may also set the following.

The same applies when the terminal is a repeater for controlling fire doors, etc., or an abnormality detector such as an analog type or on/off type fire detector. The same applies to switch means for setting the type of analog fire detector, intrusion detector, etc.

[Effects of the Invention] According to the present invention, it is possible to reduce power consumption in a circuit that performs address verification between an address from a receiver and its own address and/or determines the setting of its own type. Furthermore, the address and type are read from the switch means only when twist is turned on or at the initial time of recovery, and thereafter they are stored in the RAM for operation.

The signal processing speed can be improved, and in the case of a polling method, the polling time can be shortened.

It is.

FIG. 2 is a circuit diagram specifically showing the main parts of the above embodiment.

FIG. 3 is a flowchart showing the operation of the above embodiment.

RE...receiver, T1~TN...Repeater.

CM... Comparator.

DE...Fire detector.

DIP...Dip switch (switch means), PS
W2...Power supply means.

Claims (1)

[Claims] In a disaster prevention equipment having a terminal such as a sensor or a repeater, and a switch means for setting a self-address and/or type to the terminal, a power supply supplying power to the switch means at an initial time. A power supply control device for disaster prevention equipment, comprising: means; and control means for reading the self-address from the switch means at the initial time and writing it into a RAM.