JPH0512993U - Fire detector - Google Patents

Abstract

(57) [Summary] [Purpose] To be able to know the operating time of the fire detector and the output level at that time. [Composition] A fire detector, storage means for operating time and output level at the time of operation, output means for reading out the stored time and output level by operating a switch or an external device,
A display means for displaying the read time and output level, a sending means for sending the read time and output level to an external device, and a connecting means for the external device, and if necessary, after the fact,
By reading the stored operation time and output level, the fire detector or external device can be checked at any time.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fire detector equipped with a fire phenomenon detecting means for detecting a physical quantity such as heat, light or smoke, and particularly to the time when the fire detector operates and the output level of the fire phenomenon detecting means at that time. And are stored so that they can be displayed at any time afterwards as needed.

[0002]

[Prior Art]

 This type of conventional fire detector operates when the output level of the fire phenomenon detecting means is monitored and exceeds a predetermined reference level.

[0003]

[Problems to be solved by the device]

 Therefore, even if it is known that the output level exceeds the reference level when the fire detector operates, it is not possible to know the actual output level at that time and the operating time. Since it is not possible, it was not possible to investigate the cause of the malfunction.

[0004]

[Means for Solving the Problems]

 In view of the above points, the present invention has, in the fire detector, storage means for storing the time and the output level of the fire phenomenon detection means at the time when the fire detector operates, and the storage means stored in the storage means. Output means for reading out and outputting the operation time and the output level at that time by operating a switch or an external device; display means for displaying the operation time and the output level read by the output means; The operating time and the output level read by the output means are provided to the external device, and the connecting means for connecting the external device is provided. The output level at that time can be checked at any time by an external device such as a fire detector or receiver.

[0005]

[Action]

 It operates when the output level of the fire phenomenon detection means exceeds the reference level, the time and the output level of the fire phenomenon detection means at that time are stored, and after the fact, the operation time and the above The output level of the fire phenomenon detection means can be checked at any time by an external device such as a fire detector or receiver.

[0006]

【Example】

 An embodiment of the present invention will now be described with reference to the drawings. In FIG. 1, 1 is a sensor which constitutes a fire phenomenon detecting means for detecting a physical quantity of heat, light or smoke, and 2 is an amplifier which amplifies the output of the sensor 1. Reference numeral 3 is an A / D converter for converting an analog signal representing the output level of the sensor 1 into a digital signal, 4 is a clock section, 5 is the current time or if necessary, the current output level of the sensor 1 is switched and displayed. The first display unit 6 is a second display unit that displays the time when the fire detector operates and the output level of the sensor 1 at that time, and displays the stored contents of the RAM 8 read by the output means described later. It constitutes a display means for performing.

Reference numeral 7 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 is stored, and 8 a fire detector operates. A memory (hereinafter referred to as RAM) that serves as a storage unit that stores the time at which the sensor 1 and the output level of the sensor 1 at that time, and the above 1 to 8 are central processing units (hereinafter referred to as CPU) that collectively control these. Input terminals IN1 ... IN4 to which the CPU 9 is connected with an operating means including a power source E, switches SW1 ... SW4 and resistors R1 ... R4, and external devices corresponding to the switches SW1 ... SW4. And output terminals OUT1 ... OUT4 to which external devices corresponding to the display units 5 and 6 are connected, respectively.

The switch SW1, the resistor R1 and the input terminal IN1 are for clearing the RAM 8 by operating the switch or an external device, and SW2, R2, IN2 and SW3, R3, IN3. SW4, R4 and IN4 are for switching the display of the first display unit 5 from the time to the output level of the sensor 1 by operating the switch or an external device, and the second display unit 6 is a fire alarm. Is for displaying the time when the sensor operates and the output level of the sensor 1 at that time. The output for reading and outputting the stored contents of the RAM 8 by the SW3, R3, IN3 and SW4, R4, IN4. Constitutes a means. Further, OUT1 ... OUT4 are for sending signals of time and output level to external devices corresponding to the first display section 5 and the second display section 6, respectively.

The operation will be described next with reference to the flow chart of the CPU 9 shown in FIG. 2. The output of the sensor 1 is always amplified by the amplifier 2, and the analog signal representing the output level is converted into a digital signal by the AD converter 3. Then, the signal indicating the current time is also input to the CPU 9 from the clock unit 4. Further, the ROM 7 also stores a reference level to be compared with the output level of the sensor 1.

Then, when the CPU 9 starts (step 1), if the switch SW1 for clearing the RAM 8 is ON (step 2), the RAM 8 in which the past data is stored is cleared (step 3), and When the switch SW1 is OFF (step 2), it is determined that it is not necessary to clear the RAM 8, the current time is read from the signal of the clock unit 4 (step 4), and the signal of the A / D converter 3 is read. The output level of the sensor 1 is read from (step 5).

Next, it is judged whether or not the switch SW2 for displaying the output level of the sensor 1 on the first display section 5 is ON (step 6), but since this switch SW2 is normally OFF. , The current time is displayed on the first display section 5 (step 7).

Then, the output level of the sensor 1 read in the step 5 is compared with the reference level stored in the ROM 7 (step 9).

However, since the output level of the sensor 1 does not reach the reference level before the fire occurs, it is determined whether or not the past display (the display during the previous operation) is displayed on the second display unit 6 (step 10). , If it is displayed, the second display section 6 is cleared (step 11), and if it is not displayed, the procedure proceeds as it is. In either case, the second display section 6 then displays the operation time and the time at that time, respectively. It is judged whether or not the switches SW3 and SW4 for displaying the output level of the sensor 1 are turned on (step 12), but since the switches SW3 and SW4 are normally turned off, the operation returns to step 2 and the above operation. repeat.

Then, when the output level of the sensor 1 exceeds the reference level (step 9), a fire operation is performed (step 13), and a fire signal is sent to a receiver (not shown) or the like. Then, the time and the output level of the sensor 1 at this time are written and stored in the RAM 8 (step 14), and the operations after step 2 are repeated.

The first display unit 5 can display the current output level instead of the displayed time by turning on the output level display switch SW2 (Step 6) (Step 8). Thus, the change in the output level of the sensor 1 can be confirmed appropriately.

Then, after the fact, when it is desired to know the operation time of the fire detector and the output level of the sensor 1 at that time, when the switches SW3 and SW4 are turned on (step 12), they are stored in the RAM 8 there. The operating time being read is read (step 15) and displayed on the second display section 6 (step 16), and the output level of the sensor 1 at the operating time is read (step 17). It is displayed on the display unit 6 together with the above operation time (step 18).

In the above description, the method of performing the operation by operating the switches SW1 ... SW4 has been described. However, an external device constituting an operating means is connected to the input terminals IN1 ... IN4, and the above operation is performed remotely by the operation. In addition, the output terminals OUT 1 ... OUT 4 are connected to an external device that constitutes a display means, and the display means is used together with or instead of the display of the first and second display portions 5 and 6. It is also possible to make various displays such as.

Further, although only the time is always displayed on the first display unit 5 and the output level is switched and displayed by operating the switch SW2 as required, for example, both the time and the output level are simultaneously displayed. The display method may be selected appropriately.

[0019]

[Effect of the device]

 As described above, according to the present invention, a fire detector having a fire phenomenon detection means for detecting a physical quantity such as heat, light, or smoke is used, and when the fire detector operates, the time and the above-mentioned fire phenomenon at that time. Storage means for storing the output level of the detection means, and output means for reading out and outputting the operation time stored in the storage means and the output level at that time by operating a switch or an external device, Display means for displaying the operation time and output level read by the output means, and sending means for sending the operation time and output level read by the output means to the external device Since a means for connecting the above-mentioned external equipment is provided, the time when the fire detector operates and the output level at that time can be set as necessary after the fire detector or the fire detector. Since it can be checked at any time with an external device such as a telegraph, this makes it possible for the fire detector side to investigate the cause, especially when the fire detector malfunctions. It has the effect of providing a fire detector with excellent features not found in other products.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of CPU 9.

[Explanation of symbols]

 1 Sensor 4 Clock part 5 1st display part 6 2nd display part 7 ROM 8 RAM 9 CPU SW1 ... SW4 switch IN1 IN4 input terminal OUT1 ... OUT4 output terminal

Claims (1)

[Scope of utility model registration request] 1. A fire phenomenon detection means for detecting a physical quantity such as heat, light or smoke is provided, and the change in the output level of the fire phenomenon detection means is constantly monitored to operate when a predetermined reference level is exceeded. In a fire detector that sends a fire signal to a receiver or the like, when operating, storage means for storing the time and the output level of the fire phenomenon detection means at that time, and the operating time stored in the storage means And an output unit for reading and outputting the output level at that time by operating a switch or an external device, a display unit for displaying the operation time and the output level read by the output unit, and the output unit. It is provided with a sending means for sending the read operation time and output level to the external device, and a connecting means for connecting the external device. And a fire detector.