JPH04165593A - Terminal equipment for fire alarm facility - Google Patents

Abstract

PURPOSE:To definitely grasp whether the action of a location before the receiving circuit of a terminal equipment is normal or abnormal by providing a light emitting element which turns on in response to a polling signal while the terminal equipment is receiving the polling signal from a receiver. CONSTITUTION:A receiving circuit RX0 is provided with a FET, a transistor TR2 and a light emitting diode LED0 connected to the collector side of the transistor TR2 via an inverter, and serves to receive a polling signal transmitted by receiver RE. The light emitting diode LED0 is provided as a light emitting element which turns on in response to the polling signal while the terminal device is receiving the polling signal from the receiver. Thus, it can be definitely grasped whether the action of the location before the receiving circuit of the terminal equipment is normal or abnormal.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is applicable to fire detectors, fire sensors, smoke prevention equipment, fire extinguishing equipment, anti-theft detectors, or terminal equipment such as repeaters to which these are connected. The receiver polls and the called terminal sends monitoring information to the receiver, which is associated with a fire alarm facility that collects the monitoring information.

[Prior Art] A method in which a polling signal is transmitted from a fire alarm equipment receiver to a terminal device, and the terminal device that receives the polling signal sends return information to the receiver is called a polling method. A different address is assigned to each, and the receiver includes the address in the first part of the polling signal, and then sends operation commands such as opening a fire hydrant, and sends terminal equipment such as fire information detected by a fire detector. Sends a return command to return status information.

Some fire equipment that uses this polling method lights up an LED when the address in the polling signal matches the terminal device's own address, and when this LED lights up, the terminal device is operating normally. It is known that security guards etc. can determine that the

[Problems to be Solved by the Invention] In the above conventional example, when the address in the polling signal and the terminal device's own address match, the LE
When D is turned on and it is visually confirmed that the LED is turned on, it is considered that the operation of the terminal device is normal.

On the other hand, if the LED does not light up, it means that there is a malfunction in the terminal equipment.6 The malfunction is caused before the receiving circuit (the signal line connecting the receiver and the terminal equipment or the receiving circuit). It is unclear whether this is occurring in the microprocessor that controls the entire terminal device. therefore.

In the conventional example above, if address verification is not possible,
There is a problem in that it is not possible to determine where in the terminal device the failure is occurring.

The present invention provides a fire alarm system in which a receiver polls each of a plurality of terminal devices, the receiver reads the information returned from the terminal device, discriminates it, displays it as 1, or controls the terminal device. It is an object of the present invention to provide a terminal device that can accurately determine whether the operation of the portion before the circuit is normal or abnormal.

[Means for Solving the Problems] The present invention includes a light emitting element that lights up in response to a polling signal when a terminal device is receiving a polling signal from a receiver.

[Function] The present invention includes a light emitting element that lights up in response to the polling signal when the terminal device is receiving the polling signal from the receiver, so that the operation of the portion of the terminal device before the receiving circuit is normal. It is possible to accurately determine whether there is an abnormality or not.

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

In this embodiment, the receiving@RE is transmitted from multiple repeaters To,
. . ., the receiver RE reads the returned information from the repeater TO, discriminates it, displays it as 1, or controls the repeater TO.

In addition, this embodiment uses a 21
This is an example of one set, in which a plurality of repeaters To-... are connected to 21 receivers RE via a power supply and signal line, and each repeater receives a polling signal from the receiver RE. Response signal (return information) to receiving circuit RXO and receiver RE
A fire detector DE having a temperature sensor, etc., and a district bell B are connected to the transmitter circuit TKO. Furthermore, the repeater TO includes a microcomputer MPU, a diode bridge DB for non-polarization, a constant voltage circuit SVI,
It has a fire signal detection circuit FR and a district sound control circuit CC.

The receiving circuit RXO includes an FET, a transistor TR2,
The transistor TR2 has a light emitting diode LEDO connected to the collector side via an inverter, and the light emitting diode LEDO, which is a circuit that receives the polling signal sent from the receiver RE, receives the polling signal from the receiver. This is an example of a light emitting element that lights up in response to a polling signal when a terminal device is receiving the polling signal.

The constant voltage circuit S1 is a circuit that supplies voltages required by internal circuits such as the microcomputer MPU, the fire detector DE, the district bell B, and the like. Microcomputer MP
U has a received signal input boat INI, a fire signal input boat N2, a transmitted signal output boat 0UTI, an enable signal output boat 0UT2, and a control signal output boat 0'UT3.

The transmission circuit TXO receives the transmission signal from the boat 0UT1,
baud) AND receives the enable signal from OUT2
circuit, and a switching circuit SWC. The switching circuit SWC includes a transistor TRO and a base resistor r.
1, a bias resistor r2, and an emitter resistor r3, and has a constant current function when operated.

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

FIG. 2 is a flowchart showing the operation of the above embodiment.

Here, for all terminal devices including repeater To,
When the receiver RE is sending a polling signal, attention is paid to the repeater TO.

First, repeater TO initializes and receives II! Receive a start signal from the RE (Sl, 52). While receiving this start signal, in response to the start signal,
Since the transistor TR2 turns on and off, the light emitting diode LEDO lights up when it is on, and turns off when it is off. However, since the transistor TR2 is turned on and off very quickly, it appears to the human eye that the light emitting diode LEDO is continuously lit.

In this way, if the light emitting diode LEDO lights up, it can be understood that the operation from the receiver RE to the receiving circuit HXO is normal. If 1 light emitting diode LEDO does not light up at the timing when the receiver RE is sending a polling signal, there is an abnormality in the parts before it (the signal line connecting the receiver and the terminal device or the receiving circuit) including the receiving circuit RXO. I can understand that.

Then, when the address in the polling signal from the receiver RE matches the address specific to the repeater TO (S4), a subsequent signal of that address is received (S6).
.

The polling signal received from the receiver RE is normal,
If there is a control command in the polling signal (S8, S
9), Execute the control command (S10), If the control command is not received, or if the control command is received and the command is executed, send return information to the receiver RE (Sl
, l).

In the above embodiment, the light emitting diode LEDO blinks according to the high or low state of the signal flowing through the power supply/signal line.
Instead, a light emitting diode may be used that actually lights up continuously during the period when it receives the polling signal.For example, the collector voltage of transistor TR2 smoothes the output of the input inverter, and transistor TR2 is turned on. It is also possible to generate a signal that becomes High while the device is in use, and to continuously light the light emitting diode in response to this High signal.

FIG. 3 is a circuit diagram showing another embodiment of the present invention.

This embodiment is basically the same as the embodiment shown in FIG. 1, except for the following points. That is, the difference is that the base of the transistor TR1 is connected to the enable signal output OUT2 of the microcomputer MPU via a base resistor, and the light emitting diode LEDI is connected to the collector of the transistor TRY. Note that the 5 light emitting diode LEDI is an example of a second light emitting element that lights up when return information can be sent back to the receiver after the address in polling matches the self address of the terminal device.

Next, the operation of the embodiment shown in FIG. 3 will be explained.

FIG. 4 is a flowchart showing the operation of the embodiment shown in FIG.

Operation from initial settings to execution of control commands (S
1-310) is similar to the operation shown in FIG. After executing the control command (S10), the receiver RE
The microcomputer MPU sets return information to be sent to the microcomputer MPU internally (S21.522), turns on the enable signal (S23), and outputs the turned-on enable signal from port OUT2. As a result, the transistor TRI is turned on, so a collector current flows and the light emitting diode LED1 starts lighting up (S24).In this way, when the light emitting diode LED1 lights up, the light is sent back to the receiver RE by seeing the lighting. It can be confirmed that the relay Tl has actually started the operation of sending back the information.

After that, output the return information set above from port 0UTI (525), and send all return information to port 0UT1.
(326), the enable signal is turned off (S27). When the enable signal is turned off, the transistor TRI is also turned off, so the light emitting diode LED
1 goes out (328).

FIG. 5 is a circuit diagram showing still another embodiment of the present invention.

The repeater T2 shown in FIG. 5 is basically the same as the repeater T1 shown in FIG. 3, but differs from the repeater T1 shown in FIG. 3 in the following points. In other words, a light emitting diode LED is connected in series with the collector of the transistor TRO in the transmitting circuit TXO.
0 light emitting diode LED with 2 different points connected
2 is an example of a third light emitting element that blinks in response to the return information when the terminal device is sending the return information back to the receiver.

Next, the operation of the embodiment shown in FIG. 5 will be explained.

FIG. 6 is a flowchart showing the operation of the embodiment shown in FIG.

In this flowchart, the operations from initial setting to turning on the enable signal (31-323) are the same as those in FIG. 4.

After turning on the enable signal (S23), the turned on enable signal is output from OUT2, so
The transistor TRI turns on, sono-collector current flows, and the light emitting diode LED1 starts lighting up (531).
In this way, when the light emitting diode LHD I lights up, it can be confirmed by seeing the lighting that the repeater T2 has actually started the operation of returning the return information to the receiver RE.

After that, the return information set above is output from port 0UTI (532), and when the return information is output in this way, the same signal as the return information set above is output from the AND circuit, and in response to this return information, the same signal as the return information set above is output. Then, transistor TKO switches. In response to this switching, a collector current flows through the transistor TRO, and this collector current flows through the light emitting diode LED2, so that the light emitting diode LED2 blinks. This blinking speed is so fast that it appears to the human eye to be lit continuously, but the light emitting diode LED also blinks at the same time in response to the return information transmission signal. In addition, the light emitting diode LE
For example, an enable signal may be used to prevent the DO from blinking when transmitting the return information.

While the return information is being sent back to the receiver RE, the light emitting diode LED2 blinks according to the return information, so if the repeater T2 receives a return command from the receiver RE, the repeater T2 will be sent back to the receiver RE. You can confirm that the return information is actually being returned.

Then, when all the return information is output from OUTI (334), the AND circuit outputs "L" and the transistor TRO is turned off.

The light emitting diode LED2 is turned off, that is, stops blinking, and the enable signal is turned off (S36).

When the enable signal is turned off, the transistor TR1 is also turned off, so the light emitting diode LEDI is turned off (S3
7).

Here, in the embodiment shown in FIG. 5, if light emitting diode LED 1 lights up, it can be confirmed that up to the receiving circuit RXO is operating normally, and if light emitting diode LED 1 lights up, it can be confirmed that up to the microcomputer MPU is operating normally. You can confirm that it is working, and the light emitting diode LED2
If it lights up, you can confirm that everything up to the transmitter circuit TKO is operating normally. Therefore, the light emitting diode LE
If DO does not light up, it can be confirmed that the circuit up to the receiving circuit RXO is abnormal, and if the light emitting diode LEDO lights up but the light emitting diode LEDI does not light up, the microcomputer MPU or transistor TR can be confirmed.
It can be confirmed that the circuit around I is operating abnormally,
The light emitting diode LEDI lights up, but the light emitting diode L
If ED2 does not light up, it can be confirmed that the transmitting circuit TKO is operating abnormally. Moreover, these can be confirmed only visually.

Note that the light emitting diodes LEDO, LED1. Instead of using LED2 as a repeater, light emitting diodes LEDO, LEDI, and LED2 can be used in other terminal equipment such as fire sensors, fire detectors, fire prevention and fighting smoke prevention equipment, fire extinguishing equipment, anti-theft equipment, etc. Good too.

[Effects of the Invention] According to the present invention, it is possible to accurately determine whether the operation of the portion before the receiving circuit of the terminal device is normal or abnormal.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing one embodiment of the present invention. FIG. 2 is a flowchart showing the operation of the above embodiment. FIG. 3 is a circuit diagram showing another embodiment of the present invention. FIG. 4 is a flowchart showing the operation of the embodiment shown in FIG. FIG. 5 is a circuit diagram showing still another embodiment of the present invention. FIG. 6 is a flowchart showing the operation of the embodiment shown in FIG. RE...receiver, TO, Ti T2...repeater, TKO...transmission circuit, SWC...switching circuit. LEDOlLEDI, LED2... Light emitting diode. Patent applicant Nomi Disaster Prevention Co., Ltd. Agent Arata Yokubo - Figure 4

Claims (6)

[Claims] (1) In a fire alarm system in which a receiver polls each of a plurality of terminal devices, and the receiver reads, discriminates, and displays information returned from the terminal device, or controls the terminal device, the receiver A terminal device in a fire alarm system, comprising a light emitting element that lights up in response to the polling signal when the terminal device receives the polling signal from the terminal device. (2) In claim (1), the light emitting element is configured to respond to High and Low signals of the polling signal.
A terminal device in a fire alarm system, characterized in that it blinks depending on the w state, or lights up continuously while receiving the polling signal. (3) In claim (1), after the address in the polling matches the self-address of the terminal device, a second light that lights up when it becomes possible to send the return information back to the receiver. Terminal equipment in fire alarm equipment characterized by having a light emitting element. (4) A terminal in a fire alarm system according to claim (1), characterized in that the terminal has a third light emitting element that blinks in accordance with the return information when the return information is being sent back to the receiver. device. (5) In claim (1), after the address in the polling matches the self-address of the terminal device, a second light that lights up when it becomes possible to send the return information back to the receiver. A fire alarm system comprising: a light emitting element; and a third light emitting element that blinks in response to the returned information when the terminal device is sending the returned information to the receiver. terminal equipment. (6) In any one of claims (1) to (5), it is stated that the terminal device is a repeater, a fire sensor, a fire detector, a disaster prevention/smoke prevention device, a fire extinguishing device, or a theft prevention device. Terminal equipment in fire alarm equipment with special features.