JP4225492B2 - Fire sensor and fire tester - Google Patents

Description

  The present invention can record various information such as test history information and fire detector status history information in a fire detector alarm test work performed for maintenance inspection, etc. on the fire detector side, and can be read from the outside. The present invention relates to a fire detector and a fire detector operation tester.

The fire receiver is equipped with a test recovery switch, and when the test recovery switch is operated, the fire signal received from the fire detector is stored in the storage means in order. In some cases, the fire signal stored in the storage means can be read after completing a so-called “blur test”. Therefore, the inspector can confirm the test results in the fire detector alarm test work performed for maintenance inspection and the like. (For example, refer to Patent Document 1). In general, a fire detector includes a fire detection circuit that detects a physical quantity related to a fire phenomenon, outputs a physical quantity level corresponding to the detected physical quantity, and a control circuit that detects a fire based on the physical quantity level. Turn on the confirmation lamp when a fire is detected.
JP-A-12-99842

  If an inspector has a fire detector with a test leak, it is necessary to promptly perform the test operation of the fire detector, but the inspector has no test history information left on the fire detector side. Because of this, the test leak fire detector could not be found.

  In addition, the inspector can only confirm whether the fire detector is normal or abnormal depending on whether the fire detector has normally issued. The fire detector's fire detection circuit is composed of a dark box, for example, for smoke detectors, and due to an increase in internal contamination over time, an increase in the output of the physical quantity level occurs in the direction that the fire detector misreports, In addition, due to a failure of the fire detection circuit, the output of the physical quantity level may decrease in the direction in which the fire detector fails. Therefore, if the inspector can confirm such physical quantity level history information during the fire alarm test, the inspector himself can determine the possibility of failure in advance and replace it with a new fire detector. It is convenient because it can deal with it. Also, this physical quantity level history information and actual fire history information of the fire detector, for example, are the status history information of the fire detector over time, and if the inspector can confirm this status history information, the fire detector will fail. It is also effective for investigating the cause of failure in the case of failure.

  Not only during alarm test work, but also various information such as test history information and fire detector status history information in fire detector alarm test work can be recorded on the fire detector side and read from the outside. If it can be output, various information on the fire detector can be centrally managed on the fire detector side, and it can be read out from the outside at any time to predict the failure of the fire detector and investigate the cause of the failure at the time of failure. Can be achieved.

  The present invention has been made in order to solve the above-mentioned problems, and various information such as test history information and fire detector status history information in a fire detector alarm test work performed for maintenance inspection and the like is stored in the fire detector. It is intended to be able to be recorded on the computer and to be read from the outside.

The present invention includes a fire detection circuit that detects a physical quantity related to a fire phenomenon and outputs a physical quantity level corresponding to the detected physical quantity, and a control circuit that detects a fire based on the physical quantity level, and a confirmation lamp when a fire is detected. In the fire detector that lights up, the data is read and written in a non-contact manner by a reader / writer provided outside, and the data is read and written by being electrically connected by the control circuit. An IC tag unit is provided , and the IC tag unit is written with test history information of the alarm test work by the reader / writer, and the control circuit detects fire by the control circuit as status history information of the fire detector. The actual fire history information is written, and the control circuit detects the fire when a fire is detected. It is determined whether or not the test history information of the alarm test work has been additionally written to the part, and if it has been additionally written, the actual fire history information is not written to the IC tag part and is not additionally written In this case, the actual fire history information is written in the IC tag part .

  The reader / writer is provided in an operation tester for a fire detector provided with a simulated fire generating means, and the operation tester for the fire detector is applied to the IC tag unit by the reader / writer. It is characterized in that the test history information of the alarm test work can be written.

  According to the first aspect of the present invention, the fire detector reads and writes data in a non-contact manner by a reader / writer provided outside, and is electrically connected by the control circuit of the fire detector. , An IC tag portion for reading and writing data is provided. Therefore, various data can be stored in the IC tag portion provided on the fire detector side by the reader / writer and the control circuit, and various data can be read out by the reader / writer at any time.

The IC tag unit is written with test history information of the alarm test work by the reader / writer, and is also written with the status history information of the fire detector by the control circuit. Therefore, it is possible to store the test history information of the alarm test work and the status history information of the fire detector in the IC tag part provided on the fire detector side by the reader / writer and the control circuit. The fire detector can manage all kinds of information related to the equipment. The reader / writer can read out the test history information of the alarm test work and the status history information of the fire detector at any time.

The state history information of the fire detector is real fire history information based on the detection of a fire by the control circuit. Therefore , actual fire history information can be stored in the IC tag portion provided on the fire detector side. Further, by the reader-writer, a real fire history information can the be read at any time, it is possible to achieve a variety of measures such as the late Sawatoki failure cause investigation of the fire detector.

Further, the control circuit, upon detection of a fire, if the test history information of the alarm test work IC tag section determines whether or not the written additional, written by adding the said IC tag part I write the real fire history information first, if not written additionally writes the actual fire history information in the IC tag portion. Therefore, it is possible to distinguish between a simulated fire and a real fire caused by the alarm test work and store them in the IC tag part, and they are not stored redundantly.

According to the second aspect of the present invention, the reader / writer is provided in an operation tester of a fire detector provided with a simulated fire generating means, and the operation tester of the fire detector is connected to the IC tag unit by the reader / writer. On the other hand, the test history information of the alarm test work can be written. Therefore, at the time of alarm test work of the fire detector, when the fire detector was a failure without the normal onset report confirms the real fire history information of the fire detector, such as the effective cause of the failure investigation Yes. In addition, even if there is a missed fire detector during the alarm test work, the inspector can check the test history information on the fire detector side with the operation tester to easily make the missing fire detector. Can be found.

  A first embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 2 and 3, the ceiling plate 1 is provided with a base 2, and a smoke detector 3 is locked to the base 2 as an example of a fire detector.

  A plurality of ribs 5 are arranged at intervals in the circumferential direction on the outside of the smoke introduction part 3a of the smoke detector 3, and a confirmation lamp 6 that lights up at the time of reporting is provided in the vicinity of the legs of the ribs 5. Is provided.

  Although not shown in detail, a plurality of smoke detectors 3 are connected in parallel between a common line C as signal lines C and L and a line L (FIG. 6). A device 3 is connected to a fire receiver (not shown) by signal lines C and L to constitute a fire alarm facility.

  Next, the configuration of the smoke detector 3 will be described with reference to FIG. 6. The smoke detector 3 is a power supply circuit that takes in a power supply voltage applied to the signal lines C and L from a fire receiver (not shown). 56, for example, detects a physical quantity related to a fire phenomenon such as smoke, outputs a physical quantity level corresponding to the detected physical quantity, and controls the entire smoke detector 3, and based on the physical quantity level. And a control circuit 52 for detecting a fire. A clock unit 52A is provided inside the control unit 52.

  The smoke detector 3 takes in the power supply voltage from the power supply circuit 56, supplies a constant voltage to the fire detection circuit 51 and the control circuit 52, and a confirmation light for turning on the confirmation light 6 when a fire is detected. A circuit 54, a fire signal output circuit 55 for outputting a fire signal on the signal lines C and L when a fire is detected, and an IC tag unit 50 are provided.

  The IC tag unit 50 is a sheet-like non-contact type IC tag, that is, RFID (radio frequency identification), and the structure thereof will not be described in detail, but external information (data) writing and reading are performed. IC module 50B as an information storage unit capable of recording, and an IC module connected to the IC module 50B by electromagnetic induction from an external reader / writer (for example, the reader / writer 16 of the operation tester 10 in FIG. 1). A conductive antenna 50A serving as a radio unit for supplying current to 50B and writing and reading information to and from the IC module 50B in a non-contact state is mounted on a resin sheet (not shown), and the surface thereof is mounted. It is covered and protected by a surface sheet (not shown). Affixed to the interior of the printed circuit board of the smoke sensor 3 (not shown) by means of a double-sided tape provided on the back surface (not shown).

  In the IC tag unit 50 configured as described above, by bringing the reader / writer 16 provided outside close, current is supplied from the antenna 50A to the IC module 50B by electromagnetic induction from the reader / writer 16, thereby In the non-contact state, information can be written from the reader / writer 16 to the IC module 50B, and information written to the IC module 50B can be read by the reader / writer 16.

  The IC module 50B of the IC tag unit 50 is electrically connected to the control circuit 52, and supplies current to the IC module 50B by the control circuit 52 so that writing and reading of information with respect to the IC module 50B is in a contact state. Can be done.

  The information written in the IC module 50B is various information related to the smoke detector 3 (fire detector). For example, as will be described later in detail, the information is issued by the reader / writer 16 of the operation tester 10. The test history information of the test work and the state history information of the fire detector such as physical quantity level history information and actual fire history information by the control circuit 52.

  The IC module 50B of the IC tag section 50 includes an IC tag number, a fire detector reference number (model number, year of manufacture, manufacturing number, building floor position number, etc.), and detector type (smoke, heat, etc.). , Flame, etc.), sensor type information such as sensitivity type (1, 2, 3, etc.), storage type (accumulation type, non-accumulation type, etc.), and information necessary for report creation Has been written. In addition, the IC tag number of the fire detector is different for each fire detector.

  As will be described in detail later, when the smoke detector 3 issues a test during the alarm test operation, the IC module 50B has the test history of the alarm test operation performed by the reader / writer 16 of the operation tester 10. When the control circuit 52 detects that a fire has been detected by using the information written, whether or not a pseudo fire at the time of the alarm test work is detected depending on whether or not the test history information is additionally written in the IC module 50B. Or whether a real fire has been detected. When an actual fire is detected, actual fire history information is written in the IC module 50B.

  Next, the operation of the smoke detector 3 as a fire detector will be described with reference to the flowchart of FIG.

  First, the control circuit 52 samples the physical quantity level of the fire detection circuit 51 at a constant period of, for example, 5 seconds (S1), and determines whether or not a fire is detected based on this physical quantity level (S2). When a fire is not detected (S2), the physical quantity level history information (physical quantity level and date / time information by the clock unit 52A when the physical quantity level is stored) is previously stored in the IC module 50B for a certain period (for example, It is determined whether or not (1 month) has elapsed (S3). If the fixed period has not elapsed (S3), the process returns to step S1. If the fixed period has elapsed (S3), the physical quantity level sampled this time and the date / time information by the clock unit 52A are recorded in the physical quantity level history. Information is stored in the IC module 50B (S4), and the process returns to step S1.

  In step S2, when a fire is detected (S2), the fire signal output circuit 55 is controlled to output a fire signal from the fire signal output circuit 55 onto the signal lines C and L. Further, the confirmation lamp circuit 54 is controlled to turn on the confirmation lamp 6 (S5). Note that a fire receiver (not shown) receives and displays the fire signal output on the signal lines C and L, thereby notifying the occurrence of the fire.

  Next, the control circuit 52 additionally stores test history information in the IC module 50B in order to determine whether the detection of the fire is due to a simulated fire or a real fire in the alarm test work. It is determined whether or not (S6). If the test history information is not additionally stored in the IC module 50B, it is determined that this fire detection is due to an actual fire (S6), and this actual fire detection information and the date of the clock unit 52A are displayed. The time information is stored in the IC module 50B as actual fire history information (S7), and the process ends. If the test history information is additionally stored in the IC module 50B, it is determined that the detection of the fire is due to a pseudo fire in the alarm test work (S6), and the actual fire history information is converted into the IC module. End without storing in 50B.

  Next, the fire detector operation tester 10 will be described with reference to FIGS. 1, 4, and 5.

  The motion tester 10 includes a head portion 11, a foot portion 12, and a rod portion 13 that connects the head portion 11 and the foot portion 12.

  The head 11 includes a detection cylindrical portion 11a and an accommodating cylindrical portion 11b having a smaller diameter than the cylindrical portion 11a. A reader / writer 16 that can read and write information in a non-contact manner with respect to the IC tag unit 50, a mounting confirmation switch 17, a rib An engaging portion 18 is provided, and a light receiving portion 21 that receives light emitted from the confirmation lamp 6 is provided in a concave portion that is continuous with the reverse truncated cone surface. Further, a gas outlet is provided in the conical surface that is continuous with the reverse truncated cone surface. 20 is provided. A buzzer 22 is provided on the outer peripheral surface of the head 11.

  A gas cylinder 25 as an example of a simulated fire generating means is provided in the accommodating cylindrical portion 11b, and the gas cylinder 25 communicates with the gas outlet 20 via a connecting pipe 26. The valve 27 of the gas cylinder 25 is connected to the lever 30 via the operation rod 28.

  The lever 30 and the previous data erasure switch 31 are provided at the base of the rod portion 13.

  The foot 12 is provided with a main switch 35, a printer switch 36, a digital transfer switch 37, an IC tag information display unit 38, and a printer 39.

  The foot 12 of the operation tester 10 is provided with a control unit 40, a storage unit 41, and a clock unit 42. The control unit 40 controls the entire operation tester 10. The control unit 40 is interlocked with the operations of the reader / writer 16, the mounting confirmation switch 17, the light receiving unit 21, the buzzer 22, and the lever 30. The test start switch 43, the previous data erasure switch 31, the main switch 35, the printer switch 36, the digital transfer switch 37, the IC tag information display unit 38, the printer 39, the storage unit 41, and the clock unit 42 are electrically connected. It is connected.

  Next, the operation of this embodiment will be described. In the fire detector alarm test operation, the inspector holds the motion tester 10 and moves to the bottom of the smoke detector 3 to be tested. After the main switch 35 and the previous data erasure switch 31 are turned on and reset, the head 11 of the operation tester 10 is brought close to the sensor 3 and the detection cylinder is brought into contact with the rib engaging portion 18 against the rib 5. Insert into part 11a.

  Then, the mounting confirmation switch 17 is turned on, and the reader / writer 16 starts reading information in the IC tag unit 50, and sensor setting information and fire detector state history information input to the IC tag unit 50. Are sent to the storage unit 41 of the foot 12. The control unit 40 causes the display unit 38 to display various information such as the detector setting information and the state history information of the fire detector.

  When the lever 30 is pulled and the valve 27 is opened, the test start switch 43 is turned on, and the gas in the gas cylinder 25 is injected from the gas outlet 20 toward the smoke introduction part 3a of the smoke detector 3 to cause a simulated fire. Will occur.

  If the function of the smoke detector 3 is normal, the smoke detector 3 makes a test report before the predetermined time elapses, and the confirmation lamp 6 lights up. Then, since this light emission is received by the light receiving unit 21 facing the confirmation lamp 6, the control unit 40 determines that the smoke detector 3 has normally issued a test, and the clock unit 42 is used as the test history information. The date and time information and the normal information on the date of issue are stored in the storage unit 41 of the foot 12 in correspondence with various information such as the detector setting information of the fire detector and the state history information of the fire detector. If the function of the smoke detector 3 is not normal, the smoke detector 3 does not issue a test until the predetermined time elapses, and the confirmation lamp 6 does not light up and emit light. Therefore, the control unit 40 determines that the smoke detector 3 is abnormal. As the test history information, the date and time information and the abnormality information issued by the clock unit 42 are associated with various information such as the detector setting information of the fire detector and the status history information of the fire detector. And stored in the storage unit 41 of the foot 12.

  In addition, the control unit 40 controls the reader / writer 16 to write the test history information to the IC tag unit 50 of the smoke detector 3, and to display the test history information on the display unit 38. Let it ring. At this time, if a test is issued, a fire signal is sent to the receiver.

  The inspector determines that the alarm test has been completed by ringing the buzzer 22, and confirms the alarm test result on the display unit 38. If the smoke detector 3 is abnormal, the operation tester 10 is rotated in a predetermined direction to disengage the base 2 from the smoke detector 3, and the head 11 of the tester 10 is lowered to lower the smoke detector 3. The sensor 3 is lowered. Instead, a new smoke detector 3 is attached to the base 2.

  At this time, the state history information of the fire detector displayed on the display unit 38, that is, the physical quantity level history information and the actual fire history information of the fire detector may be confirmed to investigate the cause of the failure. Further, after the alarm test operation is completed, the cause of failure may be investigated using the state history information of the fire detector stored in the storage unit 41.

  In addition, even if the smoke detector 3 normally reports, if the inspector confirms the read physical quantity level history information and the inspector himself determines that there is a high possibility of failure in advance, a new smoke detector It is also possible to take measures such as changing to 3.

  As a criterion for determining whether the fire detector function is normal or abnormal, the control unit 40 uses the sensitivity type information and accumulated information in the sensor setting information stored in the storage unit 41 to determine the optimum fire detector for the test target. The test time is calculated and stored in the storage unit 41, and after the lever 30 is pulled down and a simulated fire condition occurs, that is, after the test start switch 43 is turned on, Normality or abnormality is discriminated depending on whether or not the time until completion is within this test time (predetermined time).

  In other words, if the fire detector is out of order, the inspector continues the alarm test for this fire detector indefinitely, so that the alarm test work is not performed without moving to the alarm test for the next fire detector. May not be performed efficiently. Here, based on the fact that the fire detector to be tested varies depending on whether it is a sensitivity type or a storage-type non-storage type, the time from the occurrence of a pseudo-fire condition to the test notification will vary. If the test is not reported even if the simulated fire is continued for a predetermined time calculated based on these, it is determined that a failure has occurred, so that the test operation can be performed efficiently.

  Then, each time the buzzer 22 sounds, the inspection is proceeded in sequence, and this process is repeated to test all the sensors on each floor. When the test is completed, the printer switch 36 is turned on to store the storage unit 41. Various information including the test history information stored in the printer 39 can be output from the printer 39 to check the result of the alarm test work, the status history of the fire detector, and the like. When the digital transfer switch 37 is turned on, various information including the test history information stored in the storage unit 41 can be digitally transferred to an external device such as a personal computer connected to a connector (not shown) of the operation tester 10. . And by these, various information including the test history information memorize | stored in the memory | storage part 41 can be output, an inspection report etc. can be produced, or the state history etc. of a fire detector can be confirmed.

  Since the test history information of the conventional detector alarm test work was only stored on the receiver side, it was difficult to find this fire detector if there was a test omission. Even in such a case, by reading and checking the test history information stored in the IC tag unit 50 of the fire detector by the operation tester 10, it is possible to easily find the fire detector of the test leak.

The embodiment of the present invention is not limited to the above, and may be as follows, for example.
(1) If the fire detector has a test circuit that tests whether or not a fire can be detected normally, the voltage level output by this test circuit as a history history information of the fire detector for each fixed period The history information may be written in the IC tag unit 50. As the test circuit, for example, in a heat sensor, a test voltage generation circuit that inputs a voltage corresponding to a physical quantity level determined to be a fire to a control circuit, and in a smoke sensor, a physical quantity in a dark box. Light emission control that is provided opposite to the light receiving element that outputs the level, and that inputs a voltage for light emission to the test light emitting element that emits light at a light emitting level so that the light receiving element can receive light equivalent to that in a fire. Circuit.
(2) Although the reader / writer is disposed at a position close to the IC tag portion in FIG. 4, it may be disposed at a distance capable of wireless communication even if it is not close.
(3) It is known that the IC tag part functions as a thermal element part (thermistor). When the fire detector is a thermal sensor, the thermal tag part as the fire detection part and the IC tag part are connected. It may be integrated.
(4) An input unit such as a keyboard is provided in the operation tester. Then, various information such as test history information can be manually written to the IC tag part of the fire detector by the input part of the operation tester.
(5) Operation of the heat detector As a simulated fire generating means of the tester, a heating element is used instead of the gas in the gas cylinder.

1 is a perspective view showing a first embodiment of the present invention. It is a perspective view which shows the smoke detector installed in the ceiling board. It is a longitudinal cross-sectional reduced view of the smoke detector installed in the ceiling board. It is a longitudinal cross-sectional view which shows a use condition. It is a schematic block circuit diagram of an operation tester. It is a schematic block circuit diagram of a fire detector. It is a flowchart which shows operation | movement of the control circuit in a fire detector.

Explanation of symbols

2 Base 3 Smoke detector (fire detector)
6 Confirmation lamp 10 Operation tester 16 Reader / writer 25 Gas cylinder 50 IC tag unit 51 Fire detection circuit 52 Control circuit 54 Confirmation lamp circuit 55 Fire signal output circuit 56 Power supply circuit

Claims (2)

A fire that detects a physical quantity related to a fire phenomenon and outputs a physical quantity level corresponding to the detected physical quantity, and a control circuit that detects a fire based on the physical quantity level, and lights a confirmation lamp when a fire is detected In the sensor
An IC tag unit that reads and writes data in a non-contact manner by a reader / writer provided outside and is electrically connected by the control circuit to read and write data is provided.
The IC tag unit is written with test history information of alarm test work by the reader / writer, and actual fire history information based on the detection of fire by the control circuit as status history information of the fire detector by the control circuit. Is written, and
When the control circuit detects a fire, the control circuit determines whether or not the test history information of the alarm test work is additionally written in the IC tag part. The fire detector is characterized in that the actual fire history information is not written, and when the additional information is not written, the actual fire history information is written in the IC tag portion . The reader / writer is provided in an operation tester for a fire detector provided with a simulated fire generating means, and the fire tester operates on the IC tag unit by the reader / writer. The fire detector according to claim 1, wherein test history information of a test work can be written.

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