JPH0217839B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a fire alarm system that transfers data between a receiver and a repeater.

[Background technology]

Figure 3 shows the overall configuration of this type of fire alarm system, in which the receiver 1 and each repeater 2 are connected to the transmission line 3.
The receiver 1 constitutes a time division multiplex transmission system in which the receiver 1 sequentially calls each repeater 2 and transfers data from the repeater 2. The repeater 2 is connected to a general fire detector 5 and an analog sensor 6 for detecting smoke concentration via a line 4, and is adapted to receive data from the general detector 5 and output data from the analog sensor 6. There is. The repeater 2 then transfers this captured data to the receiver 1.

By the way, in the conventional system, the output data of the analog sensor 6 is transmitted each time in response to the sequential calls of the receiver 1, which requires a huge amount of memory on the receiver 1 side, and software to perform the processing. It was also becoming more complicated. In particular, as the number of analog sensors 6 increases, this tendency accelerates.
There was a limit to the number of The analog sensor 6 consists of a base part 6a and a head part 6b, and the smoke concentration detected by the head part 6b, for example, is converted by a signal converter provided in the base part 6a, and is converted according to the access from the repeater 2. It is designed to be transferred to repeater 2.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned problems, and its purpose is to be able to display and record changes in the output data of an analog sensor on the receiver side, and to have a large capacity on the receiver side. To provide a self-fire alarm system that does not require memory, can greatly simplify receiver software, and can intensively monitor specific analog sensors that are prone to false alarms and missed alarms. .

[Disclosure of the invention]

Embodiment FIG. 1 shows an embodiment circuit of a repeater 2 which is an important element of the present invention.
and an interface section 8 for taking in the output data of each analog sensor 3.
sequentially access to transfer output data, and
A function to import and judge the monitoring data of the general sensor monitoring section 7, a function to compare the captured output data of the analog sensor 6 and the set level, and a function to write the output data exceeding the set level to the memory 9, and It has a read control function, takes in the transmission signal from the receiver 1 via the interface section 10, determines the data content of the transmission signal, and performs the reading of the analog sensor 6 stored in the memory 9 in response to a request from the receiver 1. A function for transferring output data and monitoring data of the general sensor 5, and a fixed function for writing the output data of a specific analog sensor 6 specially designated by the receiver 1 to the memory 9 regardless of the setting level. The transmission processing unit 11 includes a transmission processing section 11 having a specifying means. The connections between the repeater 2 configured in this way, the analog sensor 6, and the general sensor 5 are the same as in the circuit of FIG. 3.

Next, the processing operation of the output data of the analog sensor 6 of the repeater 2 will be explained based on the flowchart shown in FIG.

First, regardless of the setting level, the analog sensor 6
Whether or not to accumulate the output data of is set by the specification from the receiver 1 side. Therefore, in the repeater 2, the analog sensor 6 is used to determine whether or not a fixed designation has been made.
Do this every time you call .

Now, repeater 2 is connected to analog sensor 6.
When calling, the output of the analog sensor 6 is taken into the transmission processing section 11, and at the same time, the transmission processing section 11
It is determined whether the analog sensor 6 is fixedly designated, and if it is fixedly designated, a command is issued to write the captured data into the allocated area of the memory 9 unconditionally. If a fixed specification is not specified, the transmission processing unit 11 compares it with a preset level that is the accumulation start level,
If the output level exceeds the set level, an instruction is issued to write the output data into the allocated area of the memory 9. Now, when an output data write command is issued, the transmission processing unit 11 then determines whether or not there is a margin for writing in the capacity of the area allocated to the analog sensor 6, and if the capacity is not exceeded, Write processing to the memory 9 is performed. If the capacity is over, it is determined whether or not there is capacity remaining in the memory area allocated to another analog sensor 6, and if there is, the remaining area is changed to the memory area of the analog sensor 6 concerned. If there is no remaining area, the first accumulated output data in the memory area of the analog sensor 6 is erased. In this way, the output data is written to a modified memory area or to a memory area obtained by erasing the data.

When the above writing process is completed, output data is transferred from the next analog sensor 6 and similar processing is performed. Of course, in the case of an analog sensor 6 that is not designated as fixed, if the output is below the above-mentioned setting level, the output will not be stored in the memory 9, and the process will immediately proceed to the next analog sensor 6.

Now, if you want to transfer the output data of each analog sensor 6 stored in the memory 9 of the repeater 2 to the receiver 1 side, send the address data and transfer request command of the analog sensor 6 you want to transfer from the receiver 1 to the repeater 2.
to be transmitted. Transmission processing unit 1 of called repeater 2
1 determines the content of the transmission signal, reads the output data of a predetermined analog sensor 6 from the memory 9, converts it into a predetermined signal format, and continuously transmits it to the receiver 1. Therefore, the receiver 1 can confirm changes in the output data of the analog sensor 6, and can also display and record the changes. In this case, the receiver 1 only needs a memory to temporarily store the transferred output data of the analog sensor 6, and the processing software is only responsible for transmitting the transfer request command and receiving the transferred output data. , and can be greatly simplified. Furthermore, the data stored in the memory 9 can be erased simply by instructing the transmission processing section 11 of the repeater 2 from the receiver 1 side. Furthermore, the above fixed designation can be canceled by giving a command using a transmission signal from the receiver 1 side, and in this case, the analog sensor 6 that has been canceled will automatically perform accumulation processing by comparing the set level and output. will be done.

[Effects of the Invention] Since the present invention is configured as described above, the output data of the analog sensor can be automatically accumulated by the repeater, and the accumulated data can be continuously transferred in response to a request from the receiver. It is possible to display and record changes in data from analog sensors on the receiver side, and because the data is stored in each repeater, there is no need for large memory on the receiver side, and it is possible to display and record data changes from a large number of analog sensors. This has the effect of allowing data to be stored, and since the receiver side only needs to request data transfer to the repeater, processing software on the receiver side is simplified, and maintenance records can be recorded on the receiver side. It has the effect of being able to prevent damage at forecast levels during abnormal situations,
Furthermore, the output data of a predetermined analog sensor fixedly designated by the receiver is accumulated in the area of the memory allocated to the analog sensor during monitoring, regardless of the setting level, and the accumulated data is continuously stored at the request of the receiver. Since it is equipped with a means of transmitting information to the receiver, it is possible to centrally monitor the status of analog sensors that may cause false alarms or missing alarms, which is effective for maintenance, etc. Since it can be canceled, fixed monitoring can be designated and canceled at will from the receiver side.

[Brief explanation of drawings]

FIG. 1 is a circuit configuration diagram of a repeater according to an embodiment of the present invention, FIG. 2 is a flowchart for explaining the operation of the same, and FIG. 3 is a basic system configuration diagram.
is the receiver, 2 is the repeater, 3 is the transmission line, 4 is the line,
6 is an analog sensor, 9 is a memory, and 11 is a transmission processing section.

Claims (1)

[Claims] 1 Consists of a receiver, a repeater connected to this receiver via a transmission line, and a plurality of analog sensors connected to the repeater, and the repeater sequentially receives the output of each connected analog sensor. A means for monitoring and detecting that the set level has been exceeded, a memory for sequentially storing the output data of the analog sensors exceeding the set level in respective assigned areas, and an analog sensor specified by a request from the receiver. means for continuously transferring the accumulated data of
The output data of a predetermined analog sensor fixedly designated by the receiver is accumulated in the memory area allocated to the analog sensor during sequential monitoring regardless of the setting level, and the accumulated data is continuously received at the request of the receiver. 1. A self-fire alarm system, comprising: a means for transmitting information to a fire alarm; the fixed designation is canceled by a command from a receiver side.