JPS63298597A - Environment abnormality warning device - Google Patents

Abstract

PURPOSE:To improve the cost performance of a system by constituting the titled device of a centralized high-speed arithmetic processor, and a decentralized processor suitable for comparatively simple processing. CONSTITUTION:The titled device is constituted of a central monitor unit 1, plural repeaters 2-1-2-n connected through a transmission line from this central monitor unit 1, and plural sensors 3 connected through a transmission line from each repeaters 2-1-2-n, respectively. In this state, as for regular monitor processing, signal processing is executed by using a central processing unit 20 of low level, and in case when it has been decided to be an indefinite environment, this information and history data are inputted to a second signal processor using a central processing unit 10 of high level, and decision processing of this indefinite environment is executed. In such a way the efficiency as a system is improved, and the cost performance becomes high.

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to an environmental abnormality alarm device for detecting phenomena such as smoke, heat, gas, etc. and issuing an alarm in the event of an abnormality, and in particular uses a microcomputer for signal processing. Regarding the alarm device used.

[Prior Art] In recent years, fire alarm systems have been using multiple detectors (sensors) that detect phenomena such as heat and smoke and output analog signals indicating the magnitude of this phenomenon, and )
A fire alarm system has been provided in which the analog signals from the plurality of sensors are sequentially taken in and the occurrence of a fire is determined based on a wealth of data. Such a fire alarm device uses a microcomputer for signal processing and determines whether a fire has occurred based on a wealth of data. Therefore, it is possible to provide a highly reliable alarm device with fewer false alarms.

5 Problems to be Solved by the Invention] When determining environmental anomalies with high reliability and low false alarms based on analog signals from multiple sensors, complex calculations are required from data based on the analog signals. In some cases, simple arithmetic processing may suffice. Since alarm devices generally have a limited processing time, it becomes necessary to use a microprocessor capable of high-speed processing when performing complex judgment processing. Changing the microprocessor in the receiver to a higher-level one would require extensive hardware changes, and the operating rate for high-speed calculations would be low, resulting in poor system efficiency and low cost performance.

[Means for Solving the Problem] The environmental abnormality alarm device of the present invention incorporates a first system that takes in analog information from a plurality of sensors, creates historical data, and processes to determine whether the environment is normal, abnormal, or uncertain. comprising a signal processing device and a second signal processing device capable of performing judgment processing in an uncertain environment and performing high-speed arithmetic processing based on the judgment processing results judged by the first signal processing device and historical data. It is characterized by In other words, normal monitoring processing is of a low level (4-bit or 8-bit class).
Signal processing is performed using a central processing unit, and when an uncertain environment is determined, this information and historical data are sent to a second signal processing unit using a high-level (16 bits or higher) central processing unit. This system allows users to enter information and perform judgment processing for this uncertain environment.

3rd Embodiment] The environmental abnormality warning device of the present invention will be explained based on the drawings.

FIG. 1 is a block diagram showing an embodiment of the environmental abnormality warning device of the present invention. To explain the configuration, this system includes a central monitoring device 1, a plurality of repeaters 2-1 to 2-n connected to the central monitoring device 1 via transmission lines, and each repeater 2-1 to 2-n. and a plurality of sensors 3 connected to each other via transmission lines. The central monitoring device 1 includes a central processing device 10, a storage device 11, an interface (abbreviated as I/F) 12.14, and a transmission device 1.
3 and an operation/display section 15. Further, the repeaters 2-1 to 2-n are connected to the central processing unit 20 and the storage device 2.
1, an interface 22.24, and a transmission bag 223.
It consists of 25. Although not shown in the figure, each sensor 3 includes a detection section that detects abnormal phenomena such as fire or gas leakage, and analog information from this detection section is transmitted to the relay 2-
1 to 2-n.

Next, the operation will be explained with reference to the graph shown in FIG. 2. The central processing units 20 of the repeaters 2-1 to 2-n execute the monitoring program stored in the storage device 21. The central processing unit 20 drives the transmission device 23 via the interface 22 to sequentially call each sensor 3, and the called sensor 3 returns analog information. The transmission device 23 is the sensor 3
It receives the returned data and inputs it into the central processing unit 20 via the interface 22. The central processing unit 20 stores the returned data in the storage device 21, creates historical data, and determines whether the analog output is normal, uncertain, or abnormal based on the analog level.As shown in FIG. If it is, it is determined to be normal, if it exceeds level LV1 and is below level LV2, it is determined to be uncertain, and if it exceeds level LV2, it is determined to be abnormal. Uncertain means that it is not possible to evaluate whether the environment is abnormal or normal using the judgment criteria predetermined by the central processing unit 20. In this case, it is a case where it is not possible to judge whether the environment is abnormal or normal simply from the analog level. It is necessary to comprehensively process a judgment based on a large amount of data such as historical data of the sensor itself as well as neighboring sensors. And in this case - the most advanced calculation processing is required. This judgment result is sent to the interface 24,
It is returned as environmental information via the transmission device 25 when called from the central monitoring device 1. The central processing unit 10 of the central monitoring device 1 calls each of the repeaters 2-1 to 2-n via the interface 12 and the transmission device 13 and takes in the returned data. If the repeaters 2-1 to 2-n determine that the environment is normal or abnormal, they will send back only the result information, and if it is uncertain, they will also send back related information such as historical data for the sensor. . When the central processing unit 10 receives information about the environmental abnormality from the repeaters 2-1 to 2-n, the central processing unit 10 drives the display unit 15 via the interface 14 to display an alarm indicating the occurrence of the environmental abnormality and the location of the environmental abnormality. Also, when information that the environment is uncertain is brought in, the central processing unit 1
according to the processing program stored in the storage device 11,
The historical data is analyzed and the current level of risk is determined by predictive calculation, etc., and if the level of risk is high, the display unit 15 is driven to display a warning. In this way, the central processing unit 10 of the central monitoring device 1 performs analysis of historical data, etc., so high-speed calculation processing is required due to time constraints. Specifically, repeater 2
The central processing units 20 of -1 to 2-n are 4-bit or 8-bit microprocessors, and the central processing unit 10 of the central monitoring unit 1 is a 16-bit or more microprocessor. The environment of repeaters 2-1 to 2-n is normal,
Abnormal.

Although the determination of uncertainty is made simply from the detection level of the sensor 3, it is not limited to this and may be determined within the processing capacity of the central processing unit 20. For example, it may be determined from the integral or differential value of an analog quantity, etc. Judgment: C is also good.

The alarm device shown in FIG. 1 is used in large systems. If a computer is used for a medium-sized property, is used for building management outside, and is capable of high-speed calculation processing, the system shown in FIG. 3 can be constructed.

FIG. 3 is a block diagram showing another embodiment of the alarm device of the present invention. This alarm device includes an alarm monitoring device 5, a plurality of sensors 6 connected to a transmission line extending from the alarm monitoring device 5, and an external device connected to the alarm monitoring device 5 and normally used for other processing purposes. It is composed of a processing device 4. The external processing device 4 includes a storage device 41, a central processing device 40, and an interface 42 for transmitting and receiving data to and from the alarm monitoring device 5.

To explain the operation of the alarm device configured in this way,
The central processing unit 50 of the alarm monitoring device 5 drives the transmission device 54 via the interface 53. Then, a plurality of sensors 6 are sequentially called, historical data is created from the returned data, and judgment processing as shown in the graph shown in FIG. 2, for example, is performed.

If the determination result is abnormal, the display section 56 is driven via the interface 55 to display an alarm. If the judgment result is uncertain, an interrupt is sent to the external processing device 4 via the interface 52. When an interrupt is generated, the external processing device 4 stops the processing it has been doing so far, takes in the historical data from the alarm monitoring device 5, calculates the degree of danger by predictive calculation, etc., and sends the results to the alarm monitoring devices M and 5. Reply and return to normal processing. The alarm monitoring device 5 receives the judgment processing result from the external processing device 4, and if the judgment result is a high-risk environmental abnormality, the central processing device 50 drives the display unit 56 via the interface 55 to display an alarm. . If an indicator light (not shown) is provided to indicate the uncertain state when each central processing unit determines that it is uncertain or performs an uncertain judgment process, it is possible to know the degree of predictive judgment. I can do it.

In this way, even if an alarm system uses a central processing unit that does not have high-speed calculation processing capacity, if a high-level processing unit can be used externally, the current degree of danger can be predicted by advanced calculation processing from historical data etc. Can be done. The central processing unit, storage device, and interface of each device are computers that constitute a signal processing device.

Next, an example of a program executed by the central processing units 20 of the repeaters 2-1 to 2-n shown in FIG. 1 will be explained based on the flowchart shown in FIG. When the power is turned on, an initialization routine in step 70 is first executed. Step 71 sets a variable n indicating the sensor address to 1. Step 72 calls the sensor (n), takes in the returned data D(n), and stores it as historical data using a predetermined method. In step 73, it is determined whether the returned data D(n) is lower than the first level LVI set low, and Y
If ES, go to step 75; if NO, go to step 7
In step 74, it is determined whether the return data D(n) is high (higher than the set level LV2), and if YES, the process proceeds to step 76; if NO, the process proceeds to step 77.

Step 75 transfers the normal signal and sensor number to the central monitoring device. Step 76 transfers the anomaly signal and sensor number to the central monitoring device. Step 77 transfers the uncertain signal, sensor number and historical data to the central monitoring device. Step 78 advances the sensor address n by one step. In step 7, it is determined whether the variable n has become equal to or greater than the final address N. If YES, the process returns to step 71 and repeats the same process again starting from the sensor at the first address. Also N
If it is 0, the process returns to step 72 and proceeds to the process for the sensor at the next address.

An example of a program executed by the central processing unit 50 of the alarm monitoring device 5 shown in FIG. 3 will be explained based on the flowchart shown in FIG. This processing program is executed in the section A-B (step 7) in the flowchart shown in FIG.
3 to 77) are replaced with the flowchart shown in FIG. 5. Since the flowchart in FIG. 4 has already been explained, the flowchart in FIG. 5 will be explained. In step 80, it is determined whether the return data D(n) is lower than the first level LVI set low. If YES, this routine ends; if NO, the process proceeds to step 81. n) is set high.
If the answer is YES, the process goes to step 85 and N.

In the case of , the process proceeds to step 82. Step 82 interrupts the external processing device and transfers history data and the like. Step 83 receives the results of the environmental state determination process performed by the external processing device. In step 84, it is determined whether the judgment result is an environmental abnormality. If YES, the process proceeds to step 85; if NO, this routine ends. Step 85 performs a warning display process for the area corresponding to the sensor determined to be an environmental abnormality.

Next, the central processing unit 10 of the central monitoring device 1 shown in FIG.
An example of a program executed by the computer will be explained based on the flowchart shown in FIG. When the power is turned on, first, an initialization routine in step 90 is executed. Step 91
sets the variable i indicating the address of the repeater to 1. Step 92 collects transfer data from repeater (i).

Step 93 determines whether the transferred data is an uncertain signal. If YES, the process proceeds to step 94; if NO, the process proceeds to step 96. In step 96, it is determined whether the transmitted data is an abnormal signal. If YES, the process proceeds to step 97; if NO, the process proceeds to step 98.

Step 94 performs abnormality determination processing based on historical data. In step 95, it is determined whether or not the environment is abnormal as a result of the determination process. If YES, the process proceeds to step 97; if NO, the process proceeds to step 98. Step 97 displays a warning about the occurrence of an environmental abnormality and the area where it has occurred.

Step 98 advances the variable i one step. Step 9 Determine whether the variable i has become equal to or greater than the final intermediate m instrument number. If YES, return to step 91 and repeat the same process from the first intermediate 1# instrument; if NO, return to step 92. Similar processing is performed for the next repeater.

[Effects of the Invention] The environmental abnormality warning device of the present invention has a configuration including a centralized high-speed arithmetic processing unit and distributed processing units suitable for relatively simple processing, thereby improving the cost performance of the system. Since judgment processing can be performed using complex algorithms, it is expected that the reliability of warning judgments will be improved, and it is also possible to provide detailed information to managers. Even if each processing device becomes independent due to a communication failure, the minimum level of alarm judgment can be maintained, so the entire system will not go down.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the environmental abnormality warning device of the present invention, FIG. 2 is an explanatory diagram of the operation of the same device, and FIG. 3 is a block diagram showing another embodiment of the device of the invention. FIG. 4 is a flowchart showing a program executed by the central processing unit of the repeater shown in FIG. 1, FIG. 5 is a flowchart showing a program executed by the central processing unit of the alarm monitoring device shown in FIG. 3, and FIG. The figure is a flowchart showing a program executed by the central processing unit of the central monitoring apparatus of FIG.

Claims (3)

[Claims] (1) In an environmental abnormality alarm system that includes a plurality of sensors that detect environmental parameters such as fire and gas leaks, and that collects analog information from the sensors, performs processing to determine environmental abnormalities, and displays an alarm in the event of an abnormality, It captures analog information from sensors, creates historical data, and monitors the normality of the environment.
A first signal processing device that performs abnormality and uncertainty judgment processing, and the above judgment processing result judged by the first signal processing device and the above history data are taken in, and the judgment processing of the above uncertain environment is performed at high speed. An environmental abnormality warning device comprising: a second signal processing device capable of arithmetic processing. (2) The central processing unit of the second signal processing device uses a microprocessor of a higher level than the central processing unit of the first signal processing device. Environmental abnormality warning device. (3) The environmental abnormality warning device according to claim 1, further comprising display means for displaying an uncertain environment when the first signal processing device determines that the environment is uncertain.