JPS5991597A - Abnormality alarm - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] related.

Conventional W-axis equipment for abnormalities such as fires and gas leaks wires alarm lines for each warning area, and connects multiple ON/O 7 type fire detectors to each alarm line. Then, the alarm from any of the sensors is notified to the receiver (solid device) through the above-mentioned alarm wire, and the receiver identifies the area where an abnormality such as a fire has occurred by the alarm wire and issues a fire alarm, etc. to produce a cow. Detection of abnormalities such as fire is left to the judgment of each sensor (e.g. exceeding a certain detection level). Once each sensor detects an abnormality such as a fire and issues an alarm, it Since the output is held, there is a drawback that the receiver cannot grasp the individual positions of the alarm detectors and changes in the situation after the alarm is issued.

In order to solve the shortcomings of 10→A, we have developed an A-D converter that converts the output of an analog sensor corresponding to smoke detection into digital data, and an address detector, without having to judge whether each sensor is abnormal. A large number of terminals equipped with the above are connected to a transmission line [7], and each terminal is cyclically called by an address signal from a central processing unit installed in one of the transmission lines, and is made to send back digital data. The so-called polling method is also known to detect abnormal individuals (13).
The central processing unit compares the transmitted data with a certain abnormality judgment reference value and individually identifies the abnormality occurrence + JApJr based on the address of the terminal that detected an abnormality such as a fire, and even after the abnormality occurs, other terminals By monitoring whether the returned data exceeds the above-mentioned abnormality judgment reference value, it is possible to grasp the expansion situation of an abnormality such as a fire.

(However, such conventional alarm devices only generate and maintain an alarm at the time of occurrence of a fire, etc., and do not suppress the alarm afterwards.)
I'm not paying attention to things like a' rabbit. Therefore, in order to prevent false alarms from occurring due to temporary data abnormalities during non-fire situations, an alarm is generated when the abnormality judgment standard value is exceeded for a certain period of time. Although some methods have been devised, such as adding a time factor to the abnormality judgment reference value, these do not notify recovery after an abnormality has occurred.

The purpose of the present invention is to solve the above-mentioned conventional drawbacks, issue abnormality information when a certain abnormality judgment reference value is exceeded, and monitor the subsequent recovery, thereby determining whether the fire is non-fire or extinguishing the fire. An object of the present invention is to provide an abnormality warning device that makes it easy to understand the situation.

The abnormality alarm system of the present invention has smoke of 7.1m and gas concentration.

An analog sensor that measures the analog output corresponding to warm temperature, etc., an A-p converter that exchanges the lLj force of the analog sensor into a digital value, and an address signal input from the transmission line and its own address. Detect a match with I and ~ the above A,
- A terminal holder 2 equipped with an address detector for returning digital data from the D7#' exchanger, connected to one end of the transmission line, and detecting a plurality of terminals connected to the transmission line by address signals. Cyclic sequential calls 1. By sending back digital data and comparing the returned data with a certain abnormality judgment standard value, it is possible to judge abnormalities such as fires and gas leaks.
In the abnormal alarm system, the central processing unit that performs normal alarm display, etc. is set to a certain 4 old reference value, and once the abnormality judgment reference value described in 111. By comparing the returned data from the exceeded terminal with the recovery reference value, it is determined whether there is an abnormality or oldness.

Next, the present invention will be explained in detail with reference to the drawings.The first part is a block diagram showing an embodiment of the present invention. In other words, a plurality of terminal devices are connected to the transmission path, and each terminal is an analog sensor that outputs an analog output corresponding to smoke concentration, and the output of the analog sensor is converted into digital data. It has a built-in A-ray converter, address detector, etc. to monitor address signals input from the transmission path.
[7, When the address signal matches the address assigned to itself, the digital data corresponding to the smoke/M[ is returned.

The central processing unit 1il-i cyclically calls each terminal using an address signal according to the program stored in the program memory 2 [7] and takes in the returned digital data. It is also possible to call a specific terminal by inputting from the keyboard 6. When transmitting and receiving signals between the three transmission circuit central processing unit 1 and the transmission line, serial-to-parallel conversion, mutual conversion between the transmission signal waveform and logic level, etc. are performed. and,
The central processing unit 1 compares the returned data with a certain abnormality judgment standard value (-1) to determine the presence or absence of an abnormality, and when it is determined that there is an abnormality, displays the number of the terminal on the display 4 and issues an abnormality alarm 8 or more issued is the same as in the conventional abnormality alarm system using the polling method, but in this embodiment, an abnormal terminal number memory 5 is provided to store the number of the abnormal terminal, and the central processing unit 1 , displays the number of the terminal device in which the abnormality has occurred on the display section 4 and simultaneously writes it into the abnormal terminal number memory 5.The memory indicates abnormality detection corresponding to the number of all the terminal devices. (You can also use something that sets the flag.) Additionally, the display unit 4 may display a combination of the terminal number and an abnormality symbol indicating abnormality detection. At -2, when the terminal is called circularly, the memory 5 is
Data returned from a terminal with a number written to 1'r or a number with a flag set is subject to a certain recovery judgment criterion M.
(Compared with #2, it is determined that the abnormality such as fire has been recovered.17
When this occurs, the corresponding number or flag on the dial 5 is deleted, and the display (number and/or the abnormality symbol) on the display section 4 is also deleted. Instead of erasing the number in the memory 5, another flag indicating recovery may be set, and the display unit 4 may display a recovery symbol j1 indicating recovery.

In addition, an abnormality has occurred in the abnormal terminal number memory 5.''
7, the abnormality occurrence time, abnormal value, etc. are stored together with the number of the terminal device that was recovered, and at the time of recovery, the recovery time 1. It is desirable to know the period during which each terminal has been in an abnormal state, and to make it easier to judge whether a fire has occurred or whether the abnormality is due to temporary data in the event of a non-fire.

If the above-mentioned recovery judgment reference value is set to a lower value than the abnormality judgment reference value, it is better to prevent the inconvenience of frequent repetition of man-in and erasure due to slight fluctuations in the detection value. However, it is also desirable from the viewpoint of reducing the saturation of the central processing unit.

Incidentally, an abnormality alarm is generated and maintained immediately when the first abnormality occurs, but when an abnormality is detected due to a non-fire, recovery is determined in a short period of time, and unnecessary panic is not caused. However, the alarm may be generated only if a recovery determination is not made within a certain time IUI after the first abnormality is detected.

As described above, in the present invention, when data exceeding the abnormality judgment reference value is received from any terminal, the terminal number is stored in the memory, and the next time data from that terminal is The returned data is compared with a certain recovery standard value (
7. Since the number of the terminal device that has recovered from an abnormality is configured to be deleted from the memory or recorded as recovered, it is easy for people to grasp the scale of the fire after an abnormality occurs and to judge whether there is a false alarm due to a non-fire. There is an effect. This has the effect of being able to accurately grasp the number of the abnormal terminal at the present time even in the case of a delayed fire extinguishing operation.

[Brief explanation of drawings]

FIG. U: In FIG. 8, which is a block diagram showing an embodiment of the present invention, 1--Central processing unit, 2--Program memory, 3--Transmission circuit, 4--Display section, 5---Abnormal terminal number memory , 6...Keyboard, L...Transmission line, D...
Terminal 1, applicant Nittan Co., Ltd. 141! Person Patent Attorney Resident 1) Toshi So (and 2 others) 4

Claims (1)

[Claims] (1) An analog sensor that outputs an analog output corresponding to smoke, dust concentration, temperature, etc., an A-D converter that converts the output of the analog sensor into a digital value, and a transmission line. tL connected to one end of the transmission path; Multiple terminals connected to the transmission path are called up in sequence using address signals (7) The digital data is returned, and the returned data is compared with a certain abnormality judgment standard value to detect fires, gas leaks, etc. In the abnormality alarm device, the central processing unit is equipped with a central processing unit that performs abnormality determination and abnormality warning display, etc., wherein the central processing PP device sets a certain recovery reference value and recovers from a terminal that once exceeds the abnormality determination reference value. An abnormality alarm device characterized in that it determines abnormal recovery by comparing returned data of 7 with the recovery standard set and displays abnormal recovery. (2. In the abnormality alarm device according to claim 1) , the central processing unit prints out the abnormal terminal number, output data value, reception time, etc. by using the print output device when determining an abnormality, and also prints out the terminal number, data value 1 hour, etc. when determining recovery. etc. 8 (3) In the abnormality alarm @ setting described in claim 1 or 2, a certain standard value for advance recovery judgment is set lower than the abnormality judgment reference value. Something that is characterized by being kineta.