JP2817918B2 - Fire alarm - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a receiving section such as a receiver or a repeater, and an analog fire detector or a normal on / off type in which a plurality of the receiving sections are connected to the receiving section. The present invention relates to a fire alarm device including a fire detector.

[Prior art and problems] In a fire alarm device including a fire sensor, that is, a fire detector and a receiver, the receiver sequentially polls each sensor and collects sensor data at that time. Then, based on the collected data, a change in the environmental state where each sensor is installed is detected, and an abnormal signal or the like is output.

In this case, the receiver performs data processing of the sensor, compares it with the fire determination criterion, and outputs an abnormal signal when it matches, the content processing program of the receiver becomes complicated, and a large number of sensors are connected. In such a case, the processing time becomes long, and there is a possibility that a fire cannot be detected within a certain time.

Further, when a plurality of sensors are arranged in one section, this tendency is further increased in the reference determination for detecting a fire by correlation of data between these sensors, and the burden on the receiver increases.

[Means for Solving the Problems] Accordingly, the present invention provides a fire (RE) and a plurality of analog or on / off fire detectors (SE) connected to the receiver. In the alarm device, the plurality of fire detectors are divided into a plurality of groups, and in each group, one of the plurality of fire detectors belonging to the group has a function as its own fire detector. In addition, a group management sensor (S
_{11 to} S _M1 ), and each of the group management sensors includes data collection means (steps 504 to 50) for identifying and collecting data transmitted from the fire sensors in the group being managed.
6, ROM14, RAM11); fire determination means (steps 508, 512, 524, ROM12, ROM13, RAM12) for performing a fire determination based on the data collected by the data collection means and the own data; And a determination result transmitting means (step 527) for transmitting the result of the fire determination by the determining means to the receiving unit.

Also, in a fire alarm device including a receiving unit (RE) and a plurality of analog or on / off type fire sensors (SE) connected to the receiving unit, the plurality of fire sensors are a plurality of groups. In each group, one of a plurality of fire detectors belonging to the group has a function of managing the fire detectors in the group in addition to a function as its own fire detector. Group management sensor (S
_{11 to} S _M1 ), and each of the group management sensors includes data collection means (steps 504 to 50) for identifying and collecting data transmitted from the fire sensors in the group being managed.
6, ROM14, RAM11), individual fire determination means (steps 508, 524, ROM12, RAM12) for performing a fire determination for each fire sensor in the group based on the data collected by the data collection means and the group. Fire determination means including a group-wide fire determination means (step 512, ROM 13) for performing a fire determination as a whole, and a determination result transmission means (step 527) for transmitting the result of the fire determination by the fire determination means to the receiving unit. And are provided.

The receiving unit sends an analog data collection command to the analog fire sensor (step 403, ROM2), and sends at least a fire determination result collection command to the group management sensor. Means (Step 410, ROM
3) can be provided.

Further, the receiving unit may include means for confirming a fire determination result transmitted by the determination result transmitting means of the group management sensor.

Example An example of the present invention will be described below.

FIG. 1 shows an example of the system configuration of the present invention.
Number of total fire sensor or fire sensor is, S ₁ group, S ₂ group,
~ S _M group is divided into _M groups, and S ₁ group has sensors S ₁₁ ,
S _12, K ₁ single sensor to S _1K1 is, sensor S ₂₁ to S ₂ group, S
_22, K ₂ pieces of sensors to S _2K2 is, ..., and the S _M group sensor S _M1, S _M2, the K _M pieces of sensors to S _MKM are shown respectively included. One in each group is a mask sensor, in S ₁ group in this embodiment the sensor S
_11, in the S ₂ group sensor S ₂₁ is, in the · · · S _M groups are each S _M1 master sensor, it is assumed that the representative of each group.

 The function of each master sensor is as follows.

The receiver issues an analog data collection command by sequentially polling all N sensors connected, and each sensor converts the physical quantity of the fire phenomenon detected by this command into an electrical quantity and transmits it as analog data. The signal is sent back to the receiver by sending it out to the line or power / signal line. The receiver stores the returned data in a RAM or the like as necessary.

The master sensors in each group monitor or monitor the analog data transmitted from each sensor to the transmission line in response to the analog data collection command of the receiver, and the master sensor in each group is responsible for the analog sensor. If the analog data is sent from the master sensor, the analog data is stored in the analog data storage area RAM 11 of the serving sensor in the master sensor.

The determination as to whether or not certain analog data is transmitted from the serving sensor of the master sensor can be performed by registering the addresses of all the serving sensors in the master sensor in advance. In this embodiment, the address code is a subscript number of each sensor _SMR shown in FIG.
_{Like M} and _K , it is divided into a first group part and a second sensor number part, and is identified by the first group part of the sensor address.

The master sensor monitors all the data of the serving sensor and stores the analog data storage area RAM11 of the serving sensor.
After that, the process proceeds to fire determination processing. The processing contents are as follows.

(A) RAM 11 for analog data storage area of responsible sensor
Among them, the analog data of each individual sensor is compared with the fire judgment criterion, and when there is a matching sensor, a bit is set for the corresponding sensor in the data format shown in FIG. This process is performed by reading data of each sensor from the storage area RAM 11 in the master sensor and performing all the sensors. In the data format of FIG. 2, the address of the master sensor of the group is stored in the first part MA. The second part EG is for storing the determination result of the whole group based on the data of all the sensors of the group, and the third and subsequent parts E ₁ , E ₂ ,.
Ek is for storing the determination result based on the analog data in each of the first to kth individual sensors.

(B) The data of each sensor in a certain group is integrated, and
Compare with the fire criterion for the location of Sm and set a bit indicating the group if they match.

After completing the collection of the analog data of all the sensors, the receiver issues a result collection command to the master sensor representing each group. The master sensor returns the processing results of the above (a) and (b) to the receiver in the data format shown in FIG.

The receiver receives the data from the master sensor and displays its contents. In addition, if necessary, read the analog data of each sensor from its own RAM and check it, compare it with the fire judgment criteria defined in the receiver, and display this content if it matches Can also.

By doing so, the master sensor monitors the analog data collection command from the receiver and collects the analog data of each of the serving sensors, and at the same time, reports the fire determination result for the sensor and the fire determination result for the entire group. Since the data is transmitted to the receiver, the processing of the receiver is simple and in a short time. Further, if a fire signal is generated from the master sensor, the reliability of the system is further improved by performing the fire determination unique to the receiver as described above.

As the fire determination criteria of the individual sensors in the master sensor, various types such as a fixed level, a differential method, an integral method, a differential method, etc. can be cited according to the type of the sensor such as a thermal sensor or a smoke sensor. The fire determination criteria for the whole group include a method of generating a fire signal as a group when a certain number or more of fire signals are generated from the determination results of the individual sensors, and a method of generating analog data of adjacent sensors. A method of judging from the total amount, and the like can be considered. Also, when the determination result of the entire group is returned to the receiver, communication is performed using the address registered in the receiver without using the data format of the address of the master sensor shown in FIG. ,
Only one command is required from the receiver.

FIG. 3 is a block circuit diagram showing a fire alarm apparatus to which one embodiment of the present invention is applied. In the drawing, RE is a receiver, and SE is a receiver RE via a pair of power / signal lines L. The analog fire detector MS to which a plurality is connected is a master sensor to which a plurality is connected to the receiver RE via a pair of power / signal lines L. In FIG. 3, only one fire sensor SE and one master sensor MS are shown.

In the receiver RE, the MPU 11 is a microprocessor, ROM
1 is a program storage area, ROM2 is a sensor address storage area in which the addresses of N sensors are fixedly stored, ROM3 is a master sensor address storage area in which the addresses of M master sensors are fixedly stored, and RAM1 is a sensor address storage area. RAM2 is a sensor result data storage area for storing sensor judgment results of each master sensor, RAM3 is a work area, TR
X1 is a signal transmission / reception unit that connects the receiver RE to the transmission line, ie, the power / signal line L, via the transmission interface IF1, DP is a display connected to the microprocessor MPU1 via the display interface IF2, and OP input. Operation unit connected to the microprocessor MPU1 via the communication interface IF3.

In each master sensor MS, the MPU 11 is a microprocessor, the ROM 11 is a program storage area, the ROM 12 is a storage area for individual sensor determination criteria that individually stores determination criteria for each sensor, and the ROM 13 stores determination criteria for the group. ROM 14 is the area for storing the sensor address, RAM 11 is the analog data storage area for the sensor, RAM 12 is the storage area for fire judgment results, RAM 13 is the work area, and TRX 11 is the transmission area. FS11 is a signal transmitter / receiver that connects the master sensor MS to the transmission line L via the interface IF11.
Fire phenomenon detection means, DIP which gives data to microprocessor MPU11 side via physical quantity conversion interface IF12
Reference numeral 11 denotes a dip switch for setting the address of the master sensor, which is connected to the microprocessor MPU 11 via the address input interface IF13.

In each sensor SE, MPU21 is a microprocessor, R
OM21 is a program storage area, RAM21 is a work area, TRX
21 is a signal transmission / reception unit for connecting the sensor SE to the transmission line L via the transmission interface IF21, and FS21 is a fire phenomenon in which analog data of a physical quantity based on the fire phenomenon is given to the microprocessor MPU21 side via the physical quantity conversion interface IF22. The detection means, DIP21, is a dip switch for setting the address of the sensor, and is connected to the microprocessor MPU21 via the address input interface IF23.

 The operation of FIG. 3 will be described with reference to FIG.

FIG. 4 shows the program stored in the storage area ROM1.
FIG. 5 is a flowchart for explaining the operation of the receiver RE related to the present invention. FIG. 5 is a flowchart illustrating the operation of each master sensor MS related to the present invention in the program stored in the storage area ROM11. FIG. 6 is a flowchart for explaining the operation of each sensor SE in a portion related to the present invention of the program stored in the storage area ROM 21.

In FIG. 4, the receiver RE sequentially polls all N sensors based on a map of sensor addresses stored in the storage area ROM2. An analog data collection command is sent to the n-th sensor (n = 1 to N) (step 403), and if there is a return (step 4).
04 Y), read analog data SLV (step 40)
5) Store it in the sensor analog data storage area RAM1 (step 406).

In this way, the analog sensor for all N sensors
When the data SLV is collected in the storage area RAM1 (step 407), the data SLV is then sequentially transferred from the M master sensors one by one based on the master sensor address map stored in the storage area ROM3. The operation of collecting the determination result is performed. In the collection operation for the m-th master sensor (m = 1 to M), first, a result collection command is sent to the m-th master sensor (step 410). When the determination result is returned in the data format as shown in FIG.
Y), and stores it as a Result in the storage area RAM2 (step 412). If a fire bit is set in the result (Y in step 413), the content is displayed on the display device DP (step 414), and the operation proceeds to the collecting operation for the master sensor from step 410.

In this way, when it is determined that the collecting operation for all M master sensors has been completed (Y in step 415), the boring operation from step 401 is repeated by returning to the beginning.

In FIG. 5 for explaining the operation of the master sensor M,
If there is a transmission interrupt (Y in step 501), the transmission data is fetched (step 502), and the address accompanying the transmission data is its own address set in the dip switch DIP11 (step 503), or Storage area R
It is determined whether the address is the address of the responsible sensor of the master sensor stored in the OM 14 (step 504).

If it is determined that the address is neither the self address nor the address of the K serving sensors (N in step 503 and N in step 504), the process returns to step 501 and waits for the next interrupt.

If it is determined that the address is any one of the K receiving sensors (Y in step 504), the address is determined by the receiver R
A determination is made as to whether the address is associated with the command from E or the address associated with the data transmitted from the responsible sensor (step 505). (Step 505
Y), the received analog data SLV is stored in a location corresponding to the address of the transmission sensor in the storage area RAM 11 (step 506). And the variable k (k = 1 to
After incrementing K) by one (step 507), the storage area ROM12
Of the individual sensor stored in the storage area RAM11, and compares the determination criterion with the analog data SLV now stored in the storage area RAM11 (step 508). As a result of the comparison, if it is determined that the analog data and the criterion match (Y in step 508), the transmission sensor in the storage area RAM 12 having the data format as shown in FIG. location corresponding to the address (E ₁ of FIG. 2, E _2, · · ·, any one place of E _K) to make a fire bits (step 50
9). Thereafter, it is determined whether or not the value of the variable k has reached the total number K of the serving sensors. If the value has not reached (N in step 510), the process returns to step 501 to perform further data collection from the serving sensors.

If it is determined that data has been collected from all K sensors (Y in step 510), all analog data of the sensors stored in the storage area RAM 11 is read (step 511). ), And compares all the data with a fire determination criterion stored in the storage area ROM 13 as a group covered by the master sensor. If they match (Y in step 512), the corresponding bit in the storage area RAM 12 is set, that is, the bit is set in the EG in the data format of FIG.
If they do not match (N in step 512), the EG bit is reset (step 514). Then, the determination end flag L indicating that all the determination processes in the group have been completed is set to 1 (step), and the process returns to step 501.

If it is determined in step 503 that the address is the own address (Y in step 503), the received transmission data is an analog data collection command in step 403 in FIG. 4 from the receiver RE, or It is determined whether the command is a result collection command in step 410 (step 52).
0).

If it is an analog data collection instruction (step
520, Y), the analog data SLV is read from the fire event detecting means FS11 via the interface 1F12 (step 521). Then, by writing the self-address set in the dip switch DIP11 and the analog data SLV to the interface 1F11, the signal transmitting / receiving unit TRX11 is written.
(Step 522), and stores the analog data SLV in a location corresponding to the master sensor address in the analog data storage area RAM 11 of the responsible sensor (step 523). next,
Of the individual sensor determination criteria stored in the storage area ROM12, the determination criterion for the self is compared with the analog data SLV just stored in the storage area RAM11, and if they match (Y in step 524), the storage area is determined. location corresponding to the own address of the RAM 12, that is, when the present embodiment, the data format of FIG. 2, sets a fire bits E ₁ is the location of the master sensor (step 525).

If it is determined in step 520 that the command is a result collection command (N in step 520), a determination end flag L indicating that the collection and determination of analog data from all the sensors in charge are completed is set. Is determined, that is, whether L = 1.
For example, if the result of the judgment processing in step 512 has not yet come out for the judgment of fire as a group, for example, during the calculation, the operation of setting the flag L in step 515 has not been performed yet, that is, L ≠ 1 (Step 526)
N), and return to step 501 to wait for the next transmission interrupt.
Here, if it is determined that L is not 1, the receiver
Although the case where there is no response to RE is shown, a signal indicating that L = 1 is not yet transmitted may be transmitted to the receiver RE.

If it is determined that L = 1 (Y in step 526), the self address set in the dip switch DIP11 and the storage area RAM12 in steps 509, 513 and 525
By writing the data format as shown in FIG. 2 with all the judgment results written in the interface IF11 to the transmission line L via the signal transmission / reception unit TRX11 (step 527), In this way, the return in response to the result collection command from the receiver RE is performed. Thereafter, the variable k and the flag L are cleared (step 528), and the process returns to step 501 to wait for the next interrupt.

In FIG. 6 for explaining the operation of each sensor SE, if there is a transmission interrupt (Y in step 601), the transmission data is fetched (step 602), and the address transmitted with the transmission data and Then, a comparison is made with the self address set in the dip switch DIP21 (step 603).
As a result of the comparison, if it is determined that the address matches the own address (Y in step 603), the transmission data is transmitted from the receiver RE in step S403 in FIG.
It is determined whether the command is a data collection command (step 604).
If it is determined that the command is an analog data collection command (Y in step 604), the content detected by the fire phenomenon detecting means FS21, that is, analog data SLV, is read via the interface IF22 (step 605). Then, the analog data SLV and the self address are connected to the interface IF2.
The analog data is transmitted to the receiver RE by sending it to the transmission line L via the write signal transmitting / receiving unit TRX21 (step 606).

[Effects of the Invention] As described above, according to the present invention, the group management sensor, that is, the master sensor, collects outgoing data from the fire sensors in the managed group and makes a fire determination, and determines the fire determination result. Since it is sent to the receiver, the processing of the receiver is simple and short, and the problem of delay in fire detection is eliminated, and the receiver can use its spare capacity for more advanced judgment processing. effective.

[Brief description of the drawings]

FIG. 1 is a diagram conceptually showing a grouping configuration of a fire alarm device according to the present invention, and FIG.
FIG. 3 is a block diagram showing a data format transmitted to the RE, FIG. 3 is a block circuit diagram showing a fire alarm device according to an embodiment of the present invention, and FIG. 4 is a diagram explaining the operation of the receiver RE shown in FIG. FIG. 5 is a flow chart for the master
Flowchart for explaining operation of sensor MS, sixth
The figure is a flowchart for explaining the operation of the sensor of FIG. 3, that is, the fire detector SE. In the figure, RE
Is the receiver, MS is the master sensor or group control sensor,
SE is fire detector, ROM2 is sensor address storage area, RO
M3 is the master sensor address storage area, RAM1 is the sensor analog data storage area, RAM2 is the determination result storage area, ROM12 is the individual sensor determination reference storage area, ROM13 is the group determination reference storage area, and ROM14 is the responsible sensor address. A storage area, RAM11 is an analog data storage area of the responsible sensor, RAM12 is a fire determination result storage area, DIP11 and DIP21 are dip switches for address setting, and FS11 and FS21 are fire phenomenon detecting means.

Claims (4)

(57) [Claims] 1. A fire alarm system comprising a receiving section and a plurality of analog or on / off type fire detectors connected to the receiving section, wherein the plurality of fire detectors are divided into a plurality of groups. In each group, one of a plurality of fire detectors belonging to the group has a function of managing a fire detector in the county in addition to a function as its own fire detector. Each of the group management sensors includes a data collection unit that identifies and collects data transmitted from a fire sensor in the group being managed, and data collected by the data collection unit. A fire alarm characterized by comprising: a fire judging means for judging a fire based on own data; and a judgment result sending means for sending a result of a fire judgment by the fire judging means to the receiving unit. apparatus. 2. A fire alarm system comprising a receiving unit and a plurality of analog or on / off type fire detectors connected to the receiving unit, wherein the plurality of fire detectors are divided into a plurality of groups. In each group, one of a plurality of fire detectors belonging to the group has a function of managing a fire detector in the county in addition to a function as its own fire detector. The group management sensors each include a data collection unit that identifies and collects data transmitted from the fire detectors in the group being managed, and a data collection unit that collects data collected by the data collection unit. Fire determining means for performing a fire determination for each fire detector in the group, and a group-wide fire determining means for performing a fire determination for the group as a whole, based on the fire detectors. Receive the result A determination result transmitting means for transmitting the fire alarm device, characterized in that is provided. 3. The receiving unit includes: means for sending an analog data collection command to the analog fire sensor; and means for sending at least a fire determination result collection command to the group management sensor. The fire alarm device according to claim 1 or 2, further comprising a fire alarm device. 4. The patent claim according to claim 1, wherein said receiving unit has means for confirming a fire judgment result sent by said judgment result sending means of said group management sensor. The fire alarm device according to the above.