JP2722292B2 - Fire detector - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire detector for detecting a physical quantity of a fire phenomenon such as heat, light or smoke, and more particularly, to a physical quantity of a fire phenomenon detecting means. The present invention relates to a fire sensor capable of storing how the detection output has changed until reaching a predetermined reference level, that is, a fire determination level. 2. Description of the Related Art A conventional fire detector constantly monitors a change in the output level of a fire phenomenon detecting means and operates when the output level exceeds a predetermined level. [0003] Therefore, when the fire detector operates, it is known that the output level exceeds a predetermined level, but the actual output level at that time, and furthermore, the operation Since the situation of the change in the output level before the operation cannot be known afterwards, it is not possible to find the cause particularly when the fire detector malfunctions. SUMMARY OF THE INVENTION [0004] In view of the above, it is an object of the present invention to provide a fire detector capable of knowing the progress of a fire detector until it operates and the situation when the fire detector operates. A fire phenomenon detecting means for detecting a physical quantity of a fire phenomenon such as heat, light or smoke; and a discriminating means for discriminating whether or not the detection output of the physical quantity of the fire phenomenon detecting means has exceeded a fire discrimination level. Together with the determination means
Judge that the physical quantity detection output exceeds the above fire judgment level
When a fire is detected, a fire signal is sent to a receiver or the like. <br/> In the fire detector, the fire phenomenon detection means operates until the determination means determines that the physical quantity detection output exceeds the fire determination level. A sequential detection output storage unit for sequentially updating and storing the detection output of the physical quantity for a predetermined number of times at predetermined time intervals,
An operation detection output storage unit for storing a detection output of a physical quantity of the fire phenomenon detection means in a state where the determination means has determined that the detection output of the physical quantity has exceeded the fire determination level; and Output means for outputting a detection output of the stored physical quantity. [0006] The invention is characterized in that the operation detection output storage unit is configured to update and store the maximum value of the detection output exceeding the fire determination level. Further, the output means is provided with a readout switch, and when the readout switch is operated , this operation is performed.
Above the storage means corresponding to the read switch which is
It is characterized by comprising reading means for sequentially reading detection outputs stored from the detection output storage section or the operation detection output storage section, and display means for displaying the detection outputs read by the reading section. It is assumed that. [0008] Further, the output means includes a receiving means for receiving a read signal from an external device, and when the read means receives the read signal, the received read signal is read.
The sequential detection output storage of the storage means corresponding to the output signal
A reading unit for reading the detection output stored from the unit or the operation detection output storage unit, and a transmission unit for outputting the detection output read by the reading unit to an external device. Is what you do. The detection output is sequentially updated and stored in the fire detector until the physical quantity detection output of the fire phenomenon detection means exceeds the above-described fire determination level. Storage means for storing the detection output of the fire detector, and an output means for outputting the physical quantity detection output from the storage means, so that the physical quantity detection output stored in the storage means is output by the output means, thereby detecting the fire detector. It is possible to know later the progress of the detection output until the physical quantity exceeds the fire determination level and the detection output when the physical quantity exceeds the fire determination level. If the output means provided in the fire detector is constituted by a switch, a calling means and a display means, the progress of the detection output can be directly known at the place where the fire detector is installed. Further, when the output means provided in the fire detector is constituted by a receiving means, a calling means and a transmitting means, if an external device is connected to the receiving means and the transmitting means of the fire detector, Through the operation from the external device, it is possible to know the progress of the detection output at a remote point. Referring to the drawings, an embodiment of the present invention will be described with reference to FIG. 1. In FIG. 1, reference numeral 1 denotes a sensor as a fire phenomenon detecting means for detecting a physical quantity of a fire phenomenon such as heat, light or smoke; Denotes an amplifier for amplifying the output of the sensor 1, 3 denotes an AD converter for converting an analog signal representing the output level of the sensor 1 into a digital signal, and 4 denotes a clock unit. Reference numeral 5 denotes a first time for switching to and displaying the current time or the current output level of the sensor 1 as necessary.
The display unit 6 displays the output level of the sensor 1 when the fire detector stored in the first RAM 9 is operated and the second RAM 1
A second display unit for displaying the operation time stored in 0, 7
Is a third display which displays the output level of the sensor 1 at each predetermined time until the fire detector stored in the third RAM 11 operates and the time stored in the fourth RAM 12.
It is a display unit. Reference numeral 8 denotes a memory (hereinafter referred to as ROM) in which a predetermined reference level serving as a reference for determining whether or not the output level of the sensor 1 should be regarded as a fire, that is, a fire determination level, A memory for storing the output level of the sensor 1 when the fire detector operates (hereinafter referred to as the first
A memory for storing the operation time (hereinafter referred to as a second RAM), and a memory 11 for sequentially storing the output level at each predetermined time set at appropriate intervals until the fire detector operates. Reference numeral 12 denotes a memory (hereinafter referred to as a fourth RAM) for sequentially storing the predetermined times. Further, the above 1 to 12 are a central processing unit (hereinafter referred to as a CPU) 13 for centrally controlling these.
Operating means comprising a power supply E, switches SW1 to SW5, and resistors R1 to R5;
Input terminals IN1 to IN5 to which external devices corresponding to the switches SW1 to SW5 are connected;
Output terminals O to which external devices corresponding to 6 and 7 are connected
UT1 to OUT6 are connected respectively. The switch SW1, the resistor R1 and the input terminal IN1 are connected to the first RAM9 and the second RAM10 by operation of the switch or an external device, and the switch SW2, the resistor R2 and the input terminal IN2 are connected to the switch or the external device. Operation of the third RAM
11, for clearing the fourth RAM 12 , respectively. The switch SW3, the resistor R3, and the input terminal IN3, the switch SW4, the resistor R4, and the input terminal IN4, and the switch SW5, the resistor R5, and the input terminal IN5 are respectively operated by operating the switch or an external device. 1 for switching the display of the display unit 5 from the current time to the current output level of the sensor 1, and the second display unit 6 displays the output level of the sensor 1 when the fire detector operates and the operation time thereof. And an output level of the sensor 1 at each predetermined time until the fire detector operates on the third display unit 7 and the time. Further, the output terminals OUT1 to OUT6 are for sending signals of the respective output levels and the time to external devices corresponding to the respective display units 5, 6 and 7. In this embodiment, the first RAM 9 and the third
The RAM 11 and the CPU 13 serve as storage means, and the CPU 13 and the R
The OM 8 determines the determination means by using the switches SW3 to SW5 and the resistor R.
3 to R5 are readout switches, the CPU 13 is readout means, the CPU 13 , the second display unit 6, and the third display unit 7 are display means, the input terminals IN3 to IN5, the resistors R3 to R5, and CP
U 13 is a receiving means, and the CPU 13 is connected to the output terminals OUT1 to OUT1.
OUT6 constitutes each sending means. Next, the operation will be described with reference to FIG.
To be described with reference to the flowchart of U13, the output of the sensor 1 is always amplified by the amplifier 2, the analog signal representing the output level is converted to a digital signal by the A / D converter 3, and is input to the CPU 13, and the clock section 4, a signal indicating the current time is input to the CPU 13. Further, the ROM 8 stores a reference level, that is, a fire determination level as a comparison target of the output level of the sensor 1. When the CPU 13 starts (step 1), when the switch SW1 for clearing the first RAM 9 and the second RAM 10 is ON (step 2),
The first RAM 9 where the past data is stored, the second RAM 9
The RAM 10 is cleared (Step 3). If the switch SW1 is OFF (step 2), the first RAM
9. It is determined that there is no need to clear the second RAM 10, and the process proceeds to the next step.
It is determined whether the switch SW2 for clearing is ON or OFF (step 4). Similarly, when the switch SW2 is ON, the third RAM 11 and the fourth RAM 12 are cleared (step 5), and when OFF, the switch is cleared. When it is determined that it is unnecessary, the current time is read from the signal of the clock unit 4 (step 6), and the output level of the sensor 1 is read from the signal of the A / D converter 3 (step 7). Next, it is determined whether the switch 3 for switching the display of the first display unit 5 from the current time to the current output level of the sensor 1 is ON (step 8). Since it is normally OFF, the current time is displayed on the first display unit 5 (step 9). The output level of the sensor 1 read in step 7 is compared with the reference level stored in the ROM 8 (step 11). However, since the output level of the sensor 1 does not reach the reference level before the occurrence of the fire, it is determined whether or not a past display (display during the previous operation) is displayed on the second display unit 6 (step 12). If it is displayed, the second display unit 6 is cleared (step 13), and if it is not displayed, the process proceeds as it is.
The switch SW4 for displaying the output level of the sensor 1 when the fire detector is operated and the operation time when the fire detector is operated is turned on.
It is determined whether the operation has been performed (step 14). Since the switch SW4 is normally OFF, it is determined whether or not the output level is a predetermined time to be stored in the third RAM 11 and the time is stored in the fourth RAM 12 (step 15). ). If it is the set predetermined time, the output level of the sensor 1 at this time is written and stored in the third RAM 11 and the time is stored in the fourth RAM 12 (steps 16 and 17). Repeat the operation. If it is not the predetermined time set in step 15 above, it is determined whether or not a past display (display during the previous operation) is displayed on the third display unit 7 (step 1).
8) If it is displayed, the third display unit 7 is cleared (step 19), and if it is not displayed, the process proceeds as it is, and in any case, until the fire detector operates on the third display unit 7 next. It is determined whether the switch SW5 for displaying the output level and the time at each predetermined time is turned on (step 20). Since the switch SW5 is also normally OFF, the process returns to the step 2, and the above operation is repeated. At every predetermined time, the output level of the sensor 1 at that time is stored in the third RAM 11 in the step 16, and At 17, the time is sequentially stored in the fourth RAM 12. The third RAM 11 and the fourth RAM 1
2 has a plurality of storage capacities each having a plurality of addresses. At each predetermined time, the output level and time at that time are always written and stored in the first address, and the data stored in the first address each time is stored in the second address. And the data stored at the second address are sequentially rewritten to the third address, and the oldest data stored at the last address is erased. That is, the third RAM 11,
The fourth RAM 12 updates and stores the latest output level and time for a predetermined number of times at predetermined time intervals. When the output level of the sensor 1 exceeds the reference level (YES in step 11), a fire operation is performed (step 21), and a fire signal is transmitted to a receiver (not shown). 1 RAM 9
And the operation time is written and stored in the second RAM 10 (steps 24 and 27).
The subsequent operation is repeated. In the preceding stages of steps 24 and 27, the first RAM 9 is read (step 22).
The current output level is compared with the output level stored in the first RAM 9 (step 23) and the second RAM 1
0 is read (step 25), and it is determined whether or not the operation time has already been stored in the second RAM 10. However, at first, since no data has been stored in the first RAM 9 and the second RAM 10, the first time is stored as described above. The output level at that time is written in the 1 RAM 9 and the time at that time is written and stored in the second RAM 10. However, once they are remembered,
During the fire operation, the current output level is compared with the output level stored in the first RAM 9 in step 23 every time the operation after step 2 is repeated, and if it is smaller than the stored output level, the process proceeds as it is. Is greater than the stored output level, the first R
Since AM 9 is rewritten and held at the current output level, the maximum value of the output level during the fire operation is stored. Also, by storing the operation time in the second RAM 10, the second RAM 10 is not rewritten, and the first time when the fire operation is performed remains stored. The first display unit 5 sets the switch SW3 to O
By making N (step 8), the current output level can be displayed instead of the current time displayed (step 10). At the same time, the current output level is output from the output terminal OUT2. Thus, a change in the output level of the sensor 1 can be appropriately confirmed. Then, when it is desired to know the output level of the sensor 1 and the operation time when the fire detector operates after the fact, the switch SW4 is turned on (step 1).
4) the output level of the sensor 1 from the first RAM 9 when the fire detector stored therein is activated,
The operation time is read from the RAM 10 (steps 28 and 29) and displayed on the second display unit 6 (step 30,
31) At the same time, it is also output from the output terminals OUT3 and OUT4. If the user wants to know the output level of the sensor 1 and the time at each predetermined time until the fire detector operates, the user turns on the switch SW5 (step 20). The output level at each predetermined time is stored in the fourth RAM 12
The times are read from the
3) Displayed on the third display unit 7 (Steps 34 and 35)
At the same time, it is also output from the output terminals OUT5 and OUT6. The above description is based on the switches SW1 to SW
5 has been described, but the input terminal IN
An external device constituting an operating means is connected to the input terminals IN1 to IN5, and a switch S is connected to the input terminals IN1 to IN5.
The above operation can be remotely performed by inputting signals corresponding to W1 to SW5. Further, an external device constituting a display means is connected to the output terminals OUT1 to OUT6, and the display means displays various kinds of displays as described above together with or instead of the display units 5, 6, and 7. It can also be performed, and when combined with an external device connected to the input terminals IN1 to IN5, the state of the sensor can be known from a remote place. The first display section 5 always displays only the current time and switches the current output level by operating the switch SW3 as necessary. For example, the time and the output level are displayed. The display method may be appropriately selected, such as displaying both at the same time. According to the present invention, a fire phenomenon detection means for detecting a physical quantity of a fire phenomenon such as heat, light or smoke, and whether or not the detection output of the physical quantity of the fire phenomenon detection means exceeds a fire determination level. and it has a determination means for determining whether said-format
Another means is that the detection output of the physical quantity indicates the fire determination level.
When it is judged that the threshold has been exceeded, a fire is activated and a fire signal is sent to the receiver.
The fire sensor that sends out the signal, the detection output of the physical quantity of the fire phenomenon detection means is sequentially updated a predetermined number of times at predetermined time intervals until the determination means determines that the detection output of the physical quantity exceeds the fire determination level. A sequential detection output storage unit for storing, and an operation detection output storage unit for storing the detection output of the physical quantity of the fire phenomenon detection means in a state where the determination means has determined that the detection output of the physical quantity has exceeded the fire determination level. Storage means and an output means for reading out and outputting the detection output of the physical quantity stored in the storage means, so that the detection output of the physical quantity is fired like a conventional sensor.
When it exceeds the discrimination level, it fires and fires the receiver etc.
A disaster signal can be sent out, and if necessary, a detection output of the physical quantity stored in the storage means is output by the output means, so that the output level changes until the fire detector operates, and There is an effect that the situation when the fire detector operates can be confirmed. If the fire detector fires, the receiver etc.
Can be used to immediately check the fire, especially in the event of a malfunction of the fire detector. . Further, if the output means is constituted by a readout switch, a display, or the like, the effect of being able to know the change state of the output level of the detection output at the place where the fire detector is installed without using other equipment. is there. Further, if the output means is constituted by a receiving means, a transmitting means, etc., and an external device is connected, the detection output stored in the storage means can be read from a remote location at any time to know the output level change status. is there.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing one embodiment of the present invention. FIG. 2 is a flowchart illustrating an operation of a CPU 13; FIG. 3 is a continuation of the flowchart for explaining the operation of the CPU 13; FIG. 4 is a continuation of the flowchart for explaining the operation of the CPU 13; [Description of Signs] 1 Sensor 4 as fire phenomenon detection means 4 Clock section 5 First display section 6 Second display section 7 as display means Third display section 9 as display means 9 First RAM constituting operation detection output storage means Reference Signs List 10 second RAM 11 third RAM 12 sequentially constituting detection output storage means 12 fourth RAM 13 CPU SW1 to SW5 readout switches IN1 to IN5 input terminals OUT1 to OUT6 constituting reception means output terminals constituting transmission means

Claims (1)

(57) [Claims] Heat, and fire phenomenon detecting means for detecting a physical quantity of a fire phenomenon such as light or smoke, the detection output of the physical quantity of the fire phenomenon detecting means and a discriminating means for discriminating whether or not exceeds the fire discrimination level, the The discriminating means is the physical quantity
When it is determined that the detection output has exceeded the above fire determination level
In a fire detector that fires and sends a fire signal to a receiver or the like, the detection output of the physical quantity of the fire phenomenon detection means is predetermined until the determination means determines that the detection output of the physical quantity exceeds the fire determination level. A sequential detection output storage unit that sequentially updates and stores a predetermined number of times at a time interval, and a physical quantity detection output of the fire phenomenon detection means in a state where the determination means determines that the detection output of the physical quantity exceeds the fire determination level A fire detector, comprising: storage means comprising an operation detection output storage section for storing; and output means for outputting a detection output of a physical quantity stored in the storage means. 2. The fire detector according to claim 1, wherein the operation detection output storage unit updates and stores a maximum value of the detection output exceeding the fire determination level. 3. The output means includes a read switch, when the read switch is operated, is this operation read
A record of the sequential detection output of the storage means corresponding to the switch.
2. The apparatus according to claim 1, further comprising: reading means for reading the detection output stored from the storage unit or the operation detection output storage unit; and display means for displaying the detection output read by the reading means. Fire detector. 4. The output means includes: a receiving means for receiving a read signal from an external device; and when the read signal is received by the receiving means, the sequential detection output storage of the storage means corresponding to the received read signal. Part or above operation
2. The fire detecting apparatus according to claim 1, further comprising: a reading unit that reads the detection output stored from the detection output storage unit; and a transmission unit that outputs the detection output read by the reading unit to an external device. vessel.