JPS63262797A - Self-fire alarm system - 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] [Technical field] The present invention relates to a self-fire alarm system.

[Background technology] Using an analog sensor, an analog electrical value (hereinafter represented by an analog voltage value) output from the analog sensor
When determining the smoke concentration and displaying it on a display installed in the receiver, the output analog voltage value and smoke concentration may differ depending on the type of sensor installed in the head of the analog sensor, such as photoelectric type or ion type. There was a problem in that the displayed smoke concentration was different from the actual smoke concentration because the relationship between the two was different.

In addition, since the fire alarm system that displays the smoke density corresponding to the analog voltage value sent out by the analog sensor on the display of the receiver handles a large amount of data, the analog voltage value data of all the analog sensors is stored in the memory at all times. There was a problem that it was difficult to store it.

[Objective of the Invention 1 The present invention has been made in view of the above-mentioned problems.
The first invention aims to provide a self-fire alarm system that can correctly display the smoke concentration on the display of the receiver even if the types of analog sensors used are different, and the second invention aims to achieve the purpose of the first invention. In addition, it is an object of the present invention to provide a self-fire alarm system capable of displaying the smoke density that corresponds to the analog voltage value sent out by the analog sensor in the past on the display of the receiver.

[Disclosure of the Invention] The first invention receives analog electrical value data sent from an analog sensor corresponding to detected smoke concentration, and receives analog electrical value data sent from the analog sensor and smoke density according to the type of sensor. The receiver is characterized by having at least a means for converting the smoke concentration detected by the sensor from the received analog electric value according to a relational table, and a display for displaying the converted smoke concentration, and a second The invention provides a receiver that receives analog electrical values or a repeater that relays between an analog sensor and a receiver having a storage area that stores a number that identifies the analog sensor and a plurality of analog electrical value data of the sensor. storage means having multiple sets corresponding to multiple analog sensors;
A transmission processing means that sequentially calls all the connected analog sensors and samples the analog electrical values sent out from these analog sensors at a constant cycle, and a transmission processing means that sequentially calls all the analog sensors connected and samples the analog electrical values sent out from these analog sensors at a constant cycle, and and processing means for sequentially storing the number of the analog sensor and the output analog voltage value of the analog sensor in the storage area of the dirt storage means.

The present invention will be explained below with reference to Examples.

Support 1 This figure 1 shows the schematic configuration of an embodiment of the self-fire alarm system of the present invention, and the basic system of the self-fire alarm system is composed of a receiver 1, a repeater 2, and an analog sensor 3. The receiver 8!1 and the repeater 2, the intermediate device 2 and the analog sensor 3 are connected by transmission lines ISl', so that data can be exchanged between them by multiplex transmission.

In other words, the analog sensor 3 consists of a base part 3a that has a signal processing function and a head part 3b that detects smoke and converts it into a voltage signal corresponding to the detected smoke concentration. Various sensors are used. The base section 3a receives an analog electrical value, such as a voltage value, from the head section 3b, converts it into a digital value using an internal A/D converter, and returns the value when accessed from the repeater 2. The unique address is set by an address switch (not shown).

The repeater 2 includes a transmission processing section 4 that sends and receives data to each analog sensor 3, a transmission processing section 8 that sends and receives data to and from the receiver 8!1, and a data storage level L1 that performs each control process. , a memory 5 consisting of a storage element such as a FROM, which stores in advance the reference levels of the forecast level L2, the fire level Ls, and the interlocking levels L and W, and a number that identifies the analog sensor 3 based on the result of data processing. , a storage memory 6 for storing an analog value corresponding to the smoke concentration detected by the analog sensor 3, and a transmission processing unit 4, 8 that controls reading from the memory 5 and reading and writing data from the storage memory 6. The central processing unit 7 is configured to perform processing operations such as sending and receiving data and data determination processing. The transmission processing section 4 sends a transmission signal that sequentially accesses the address of each analog sensor 3 to each analog sensor 3 via transmission Ml', and sends a response signal as an analog voltage value corresponding to the detected smoke concentration. Data is returned and sampled (for example, sampling is normally performed once for all analog sensors 3 every 3 seconds). Central processing! Reference numeral 57 indicates the analog voltage value received by the transmission processing unit 4 and a data storage level L which is stored in advance in the memory 5 consisting of a storage element such as FROM.
+, forecast level L2, fire level L1, interlocking level L
, and if the received analog voltage value exceeds the data storage level L, the number of the analog sensor 3 is stored in a storage memory 6 consisting of a storage element such as a RAM. There is also a function to store the sampled analog voltage values sequentially, and to store the analog voltage values from the analog sensor 3 at the forecast level L2.
, the fire level Ls, and the interlocking level L4 are detected, a forecast signal, a fire signal, and an interlocking signal are created correspondingly, and these signals are transmitted to the receiver 1 through the transmission processing section 8. , or is the analog voltage value data of the analog sensor 3 sent from the receiver 1 and received by the transmission processing unit 8 and requested to transmit based on the h analog data transmission M request signal stored in the storage memory 6? If it is stored, the analog voltage value data is transmitted to the receiver 1 through the transmission processing unit 8 and the transmission a1. It is designed to receive data from the receiver 1 and send data back.

Since the smoke concentration and the output analog voltage value differ depending on the type of sensor used in the head part 3a of the analog sensor 3 connected here, that is, a rechargeable sensor, an ion type sensor, etc., the central processing part of the repeater 2 7, each of the above levels L
, ~L4, the received analog voltage value is corrected based on the relationship table between the smoke density of each type and the analog voltage value, which is stored in the memory 5 in advance, and the comparative detection is performed. Reliable level comparison can be performed regardless of the type of sensor 3. In addition, for each level L, ~L4, the interlocking level L corresponds to the level with the highest smoke density, followed by the fire level L1, the forecast level L2, and the data storage level L, which are the lowest (in that order). The data storage level L corresponding to the lowest smoke density is set to a value such that the output analog voltage value of the analog sensor 3 does not exceed when no smoke is detected.

Now, data is written into and read out from the storage memory 6 under the control of the central processing unit 7, and there are eight sets of analog values each storing, for example, 60 data.
When the memory capacity for 0 data becomes full, the oldest stored data is sequentially deleted and the latest data is stored, so that 60 data from the past are always stored. Here, since the above-mentioned sampling period is set to a 3 second period in the embodiment, the above 60 data corresponds to 3 minutes.

The data stored in the storage memory 6 is erased not only by a recovery signal from the receiver 1, but also when all 60 data have fallen below the storage level L1, in which case the storage area of the group concerned is erased. is opened for analog sensor 3 above the data storage level L1. Storage memory 6
Even if an analog sensor 3 whose six-pronged analog voltage value exceeds the data storage level L is output, if all eight storage areas are used, the corresponding analog The analog voltage value data of the sensor 3 is not stored and is discarded.

The receiver 1 includes a transmission processing unit 9 that exchanges data with the repeater 2, and processes data processing such as judgment of received data and data creation, control of the display 11, alarm control, etc. It consists of a central processing unit 10 that performs control, interlocking, etc., and when the administrator wants to know the past progress of the analog voltage value data of the analog sensor 3 that has been issued, make the repeater 2 send an analog data transmission request signal. The analog voltage value data returned from the repeater 2 is displayed in a graph on the display 11, and the administrator looks at the graph displayed on the display 11 and determines whether there is a high possibility of a false alarm. is now possible. By transmitting only necessary data from the repeater 2 in response to this analog data transmission request, the amount of data transmitted between the receiver 1 and the repeater 2 is reduced. Since the analog pressure value sent from the repeater 2 is the raw data of the analog sensor 3, the relationship between the smoke concentration and the output analog voltage value differs depending on the type of the analog sensor 3, as described above. Therefore, like the repeater 4, a relational table is stored in the internal memory of the central processing unit 10, and when displaying a graph, the received analog voltage value is converted to the corresponding smoke density to display the correct smoke density. It is possible to do so.

Therefore, the output analog voltage value from a certain analog sensor 3 is at the data storage level J2. If the value exceeds the value, the analog voltage value of the analog sensor 3 is stored in the storage area along with the number of the analog sensor 3, for example, 60 data. When this storage capacity is exceeded, the stored old data is sequentially updated with new data. This stored data is sent from the repeater 2 to the receiver 1 in response to an analog data transmission request from the receiver 1, and is sent to the display 11 of the receiver 1.
It is expressed in terms of smoke density. Here, the data storage level L+ is set corresponding to the smoke density lower than the forecast level L2, so when the analog voltage value from the analog sensor 3 exceeds the forecast level L2 and a forecast signal is issued, α
In this case, the output analog voltage value of the analog sensor 3 is already stored in the storage memory 2, so on the receiver 1 side,
The history of the smoke concentration detected by the analog sensor 3 in the past before the forecast can be displayed, and based on this display, the administrator can determine whether the forecast is a false alarm.

[Effects of the Invention] The present invention receives analog electrical value data sent from an analog sensor corresponding to the detected smoke concentration, and adjusts the analog electrical value sent from the analog sensor and the smoke density according to the type of sensor. Since the receiver is equipped with at least a means for converting the smoke concentration detected by the sensor from the received analog electric value using a relational table and a display for displaying the converted smoke concentration, the analog sensor 3 can be of a different type. Also, in the second invention, the correctly corrected smoke concentration can be displayed on the display, and different types of analog detectors 3 can be used together. Receive the analog electrical value data sent out from the analog sensor, and calculate the detected smoke concentration of the sensor from the received analog voltage value according to the relationship table between the analog electrical value sent out from the analog sensor and smoke concentration according to the type of sensor. A receiver that is equipped with at least a means for converting the smoke concentration and an indicator that displays the converted smoke density, and that receives analog electrical values or a repeater that relays between the analog sensor and the receiver. The storage means has a plurality of sets of storage areas corresponding to the plurality of analog sensors, each storing a number specifying the analog sensor and a plurality of analog electric value data of the sensor, and a storage means for storing a plurality of sets of storage areas for storing a number specifying the analog sensor and a plurality of analog electric value data of the sensor, and a storage means for storing a plurality of storage areas corresponding to the plurality of analog sensors. transmission processing means that sequentially calls the output analog electrical values of these analog sensors at regular intervals, and when the sampled analog electrical values exceed a predetermined data storage level, the number of the analog sensor and the corresponding Since it is equipped with a processing means that sequentially stores the analog voltage values sent out by the analog sensor in the storage area of the storage means, it is possible to display the change in smoke concentration, so that future changes can be predicted and it is possible to judge whether there is a false alarm. It is easy to read, and since the analog electrical value data is stored in the storage memory, only the necessary data can be retrieved, which has the effect of reducing the amount of data to be handled.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a circuit diagram of an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Receiver, 2... Repeater, 3... Analog sensor 3.4, 9.8... Transmission processing unit, 5... Memory, 6... Storage memory, 7, 10... Central processing unit, 1
1...Display device.

Claims (5)

[Claims] (1) Receive the analog electric value data sent from the analog sensor corresponding to the detected smoke concentration, and use the received analog data according to the relationship table between the analog electric value sent out from the analog sensor and the smoke concentration according to the type of sensor. A self-fire alarm system characterized in that a receiver is equipped with at least a means for converting a smoke concentration detected by the sensor from an electrical value, and a display for displaying the converted smoke concentration. (2) Receive the analog electric value data sent from the analog sensor corresponding to the detected smoke concentration, and use the relationship table between the analog electric value sent from the analog sensor and the smoke concentration according to the type of sensor to A receiver, or an analog sensor and a receiver, which is equipped with at least a means for converting the smoke concentration detected by the sensor from the electric value and a display device that displays the converted smoke concentration, and which receives the analog electric value. The repeater that relays the connection between the 1 and 2 is connected to a storage means that has multiple sets of storage areas corresponding to multiple analog sensors, each storing a number that specifies the analog sensor and multiple analog electrical value data of the sensor. transmission processing means that sequentially calls all the analog sensors to be sent out and samples the output analog electrical values of these analog sensors at a constant cycle; A self-fire alarm system comprising processing means for sequentially storing the number of the analog sensor and the output analog voltage value of the analog sensor in the storage area of the storage means. (3) When the processing means receives a restoration command or detects that all analog electrical values stored in the storage area of the storage means have fallen below the data storage level, the data stored in the storage area is erased. The self-fire alarm system according to claim 2, characterized in that: (4) When all the storage areas of the storage means are in use, the processing means operates so as not to store the analog electrical values of other analog sensors in the storage means even if they exceed the data storage level. The self-fire alarm system according to claim 2, characterized in that: (5) The self-fire alarm system according to claim 2, wherein the data storage level is set to correspond to a smoke density level lower than a smoke density level at which a fire is determined.