Heating test device

Abstract

To provide a heating test device capable of testing a sensitivity of a heat sensor for sensing a fire when testing the heat sensor installed in a building or the like.SOLUTION: A heating test device includes: a main body; and a hood attached to the main body. The main body has a temperature sensor, so as to test a fire sensing sensitivity of a heat sensor with a hood arranged thereon with the use of an output of the temperature sensor.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a heating tester for testing a heat detector. [Background technology]

[0002] A heating tester is used to test the operation of heat detectors that detect fires by heat. When a heating test is performed, the installed heat detector is heated in the heating tester. As shown in Patent Document 1, a heating test is performed by heating using electricity or fuel, and the heated heat detector is activated and triggers an alarm, thereby confirming that the heat detector is functioning. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2017-188062 Summary of the Invention [Problem to be solved by the invention]

[0004] Heat detectors that detect fires have a set operating temperature at which they detect heat and activate, and are inspected before shipping to ensure they operate within the specified temperature range. Because the operating temperature depends on the sensitivity of the heat detector, the inspection checks the sensitivity of the heat detector. After installation in a building, a heating test is conducted, and it is sufficient to confirm that the detector activates when heated. However, it is also advisable to check the sensitivity during the post-installation test.

[0005] An object of the present invention is to provide a heating tester that can test the sensitivity of a heat detector when testing a heat detector for detecting fires installed in a building or the like. [Means for solving the problem]

[0006] In one embodiment of the present invention, a heating tester comprises a main body and a hood attached to the main body, the main body having a temperature sensor, and the output of the temperature sensor is used to test the fire detection sensitivity of a heat detector covered with the hood. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a heating tester that can test the sensitivity of a heat detector when testing a heat detector for detecting fires installed in a building or the like. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 3 is a cross-sectional view showing a state immediately before testing the heat detector with the heating tester in Example 1. [Figure 2] FIG. 3 is a cross-sectional view showing a state in which a heat detector is being tested by a heating tester in Example 1. [Figure 3] FIG. 2 is a sequence diagram of a heat detection test using the heating tester of Example 1. [Figure 4] FIG. 10 is a cross-sectional view showing a state in which a heat detector is being tested by a heating tester in Example 2. [Figure 5] FIG. 10 is a cross-sectional view showing a state in which a heat detector is being tested by a heating tester in Example 3. [Figure 6] FIG. 10 is a sequence diagram of a heat detection test using a heating tester according to a third embodiment. [Figure 7] 10 is a graph showing the prediction of the sensing error dT in Example 3. [Figure 8] FIG. 10 is an operation flow diagram of a heating tester in Example 3. [Figure 9] FIG. 10 is a cross-sectional view showing a state in which a heat detector is being tested by a heating tester in Example 4. [Figure 10] FIG. 10 is a flow chart showing the operation of the heating tester of Example 4. DETAILED DESCRIPTION OF THE INVENTION [Example]

[0009] Figure 1 shows the situation just before testing the heat detector 1 with the heating tester 2 in Example 1. Figure 1 shows the heating tester 2 approaching the heat detector 1 installed on the ceiling C. The side view of the heat detector 1 and the cross section of the heating tester 2 are shown.

[0010] The heating tester 2 has a main body 21 rotatably attached to a bracket 22, and the bracket 22 is fixed to an arm 23. The main body 21 has a main body frame 211, which is the housing of the main body 21, and is cylindrical with a bottom, and a cylindrical hood 24 is attached to the opening on the opposite side of the bottom. The tester lifts the heating tester 2 by holding the arm 23 and presses the hood 24 against the periphery of the heat detector 1.

[0011] Figure 2 shows the situation in which the heat detector 1 is being tested by the heating tester 2 in Example 1. In Figure 2, the heat detector 1 is shown from the side, and the heating tester 2 is shown in cross section. The hood 24 of the heating tester 2 is flexible, and during testing it comes into contact with the ceiling C around the heat detector 1, forming an enclosed space inside. If the heat detector 1 is large, it comes into contact with the housing of the heat detector 1 to form an enclosed space.

[0012] The heat detector 1 shown in Figure 2 is a mechanical constant-temperature type, and includes a heat sensor 12 extending downward from the center of a cylindrical housing 11 with a closed bottom. The heat sensor 12 has a bimetal (not shown) and contacts (not shown) inside. Heat from a heat receiving plate 13 that extends in a disk shape around the heat sensor 12 is transferred to the heat sensor 12, deforming the bimetal, which closes the contacts and activates the heat detector. When the heat detector 1 is activated, a confirmation light 14 attached to the housing 11 lights up.

[0013] Meanwhile, the main body 21 of the heating tester 2 has a device panel 212 attached to the inside underside of a main body frame 211. The device panel 212 has a control unit 213, a battery 214, an ultrasonic heater 215 as a heating device, an infrared sensor 216 as a temperature sensor, a light receiving sensor 217, and a transmitter / receiver 218. The control unit 213 has a CPU and memory. The light receiving sensors 217 are provided to receive light from the confirmation lamp 14 of the heat detector 1, and are provided in multiple locations so that the main body 21 of the heating tester 2, which is circular when viewed from below, can receive the confirmation light emitted by the confirmation lamp 14 regardless of the rotational position relative to the heat detector 1.

[0014] Each device in the main body 21 of the heating tester 2 operates using power supplied from a battery 214. Furthermore, the ultrasonic heater 215 is controlled by a control unit 213, and light reception information is sent from an infrared sensor 216 and a light receiving sensor 217 to the control unit 213. The control unit 213 wirelessly transmits and receives information to an external device N via a transmitting / receiving unit 218. The external device N in Example 1 is a notebook computer.

[0015] In the state shown in FIG. 2, when the heating tester 2 is operated from the external device N to start a test, the ultrasonic heater 215 is activated and emits ultrasonic waves toward the heat detector 1. The ultrasonic waves vibrate the heat receiving plate 13 of the heat detector 1, causing it to generate heat. The heat generated by the heat generation is transmitted from the heat receiving plate 13 to the heat sensor 12, and the internal bimetal closes the contacts, activating the heat detector 1. When the heat detector 1 activates, the confirmation light 14 lights up. In Example 1, heating by the ultrasonic heater 215 is performed in steps of several degrees each. This is because the test is performed while waiting for the temperature in the heat detector 1 to stabilize, taking into account detection delays due to the thermal conduction speed of the heat receiving plate 13 and the response speed of the bimetal, etc.

[0016] In the heating tester 2, the infrared sensor 216 is provided in the center of the main body 21, facing the thermal sensor 12 of the heat detector 1. The infrared sensor 216 measures the temperature near the thermal sensor 12 in the heat detector 1. In addition, the light receiving sensor 217 receives light emitted by the confirmation light 14. Therefore, during testing, the temperature near the thermal sensor 12 when the confirmation light 14 is lit can be determined.

[0017] The sequence of a heat detection test using the heating tester 2 of Example 1 will be described with reference to Figure 3. When the tester holds the heating tester 2 against the heat detector 1 and inputs a test start command into the external device N (step S1), a test start command is transmitted wirelessly from the external device N. When the test start command is received by the transceiver 218 of the heating tester 2 and sent to the control unit 213, the control unit 213 drives the ultrasonic heater 215 to start heating (step S2). Heating is performed intermittently, and the temperature of the heat receiving plate 13 of the heat detector 1 rises in a stepped manner. Then, when the bimetal contacts close, the heat detector 1 is activated and the confirmation light 14 lights up (step S3).

[0018] The confirmation light emitted from the confirmation lamp 14 is received by the light-receiving sensor 217 of the heating tester 2, and the control unit 213 confirms the confirmation light (step S4). Then, when the control unit 213 confirms the confirmation light, it obtains the temperature of the heat detector 1 covered with the hood 24 using the output of the infrared sensor 216, which is a temperature sensor, and stores this as the activation temperature Ta (step S5). Then, under the control of the control unit 213, the transceiver unit 218 wirelessly transmits data on the activation temperature Ta to the external device N (step S6). The external device N receives the data on the activation temperature Ta, determines whether it is within a predetermined temperature range, and displays it on the display unit (step S7). This makes it possible to test the fire detection sensitivity of the heat detector 1. [Example]

[0019] FIG. 4 shows a situation in which a heat detector 1 is being tested using a heating tester 3 in Example 2. The heating tester 3 has a main body 31 rotatably attached to a bracket 32, and the bracket 32 ​​is fixed to an arm 33. The main body 31 has a body frame 311, which is the housing of the main body 31, and is cylindrical with a bottom. A cylindrical hood 34 is attached to the opening on the opposite side of the bottom. FIG. 4 shows a tester holding the arm 33 and lifting the heating tester 3, and pressing the hood 34 against the periphery of the heat detector 1. In FIG. 4, the heat detector 1 is shown from the side, and the heating tester 3 is shown in cross section. The hood 34 is flexible and comes into contact with the ceiling C around the heat detector 1 during testing, forming an enclosed space inside. If the heat detector 1 is large, the hood 34 comes into contact with the housing of the heat detector 1 to form an enclosed space.

[0020] The main body 31 of the heating tester 3 has a device panel 312 attached to the inside underside of the main body frame 311. The device panel 312 includes a control unit 313, a battery 314, an infrared sensor 316 as a temperature sensor, a light-receiving sensor 317, a transceiver 318, and a circulator 319. The control unit 313 has a CPU and memory. The light-receiving sensors 317 are provided to receive light from the confirmation lamps 14 of the heat detector 1, and are provided in multiple locations so that the main body 31 of the heating tester 3, which is circular when viewed from below, can receive the confirmation light emitted by the confirmation lamps 14 regardless of its rotational position relative to the heat detector 1. A heater 315 is also provided on the side of the main body frame 311. The heater 315 consists of a Peltier element and a heat exchanger. One surface of the Peltier element is in contact with the heat exchanger, and the other surface is exposed to the outside of the main body frame 311. The heat exchanger is provided inside the main body frame 311. The heater 315 and the circulator 319 form a heating device.

[0021] Each device in the main body 31 of the heating tester 3 operates on power supplied from a battery 314. Furthermore, the heater 315 and the circulator 319 are controlled by a control unit 313, and light reception information is sent from the infrared sensor 316 and the light receiving sensor 317 to the control unit 313. The control unit 313 wirelessly transmits and receives information to and from an external device N via a transmitting / receiving unit 318. The external device N in Example 2 is also a notebook computer.

[0022] In the state shown in Figure 4, when the heating tester 3 is operated from the external device N to start a test, the heater 315 and circulator 319 are activated. The heater 315 is composed of a Peltier element and a heat exchanger, and supplies heat to the inside of the main body frame 311 of the main body 31. The supplied heat is turned into warm air by the wind generated by the circulator 319 and spreads throughout the space inside the main body 31 and hood 34, heating the heat receiving plate 13 of the heat detector 1. The heat is further transferred to the heat sensor 12, and the bimetal inside the heat sensor 12 closes the contact point, activating the heat detector 1. When the heat detector 1 is activated, the confirmation light 14 lights up.

[0023] In the heating tester 3, the infrared sensor 316 measures the temperature near the heat sensor 12 in the heat detector 1. The light-receiving sensor 317 also receives light emitted by the check light 14. Therefore, during testing, the temperature near the heat sensor 12 when the check light 14 is lit can be determined. This makes it possible to test the fire detection sensitivity of the heat detector 1 covered with the hood 34 using the output of the infrared sensor 316, which is a temperature sensor. In Example 2, heating by the heating device is also performed in steps of several degrees. This is because the test can be performed while waiting for the temperature of the space inside the main body 31 and hood 34 of the heating tester 3 to stabilize, as well as the temperature in the heat detector 1 to stabilize.

[0024] In the heating tester 3 of Example 2, heating by the ultrasonic heater 215 in Example 1 is replaced by heating by a heater 315 and a circulator 319. In Example 1, the heat receiving plate 13 of the heat detector 1 is directly heated by the ultrasonic heater 215, but in Example 2, the heat receiving plate 13 is indirectly heated by heating the air surrounding the heat detector 1. The test sequence in Example 2 is the same as the test sequence in Example 1 shown in FIG. [Example]

[0025] FIG. 5 shows a state in which a heat detector 4 is being tested using a heating tester 5 in Example 3. The heating tester 5 has a main body 51 rotatably attached to a bracket 52, and the bracket 52 is fixed to an arm 53. The main body 51 has a body frame 511, which is the housing of the main body 51, and is cylindrical with a bottom. A cylindrical hood 54 is attached to the opening on the opposite side of the bottom. FIG. 5 shows a tester holding the arm 53 and lifting the heating tester 5, pressing the hood 54 against the periphery of the heat detector 4. In FIG. 5, the heat detector 4 is shown from the side, and the heating tester 5 is shown in cross section. The hood 54 is flexible and comes into contact with the ceiling C around the heat detector 4 during testing, forming an enclosed space inside. If the heat detector 4 is large, the hood 54 comes into contact with the housing of the heat detector 4 to form an enclosed space.

[0026] Unlike the mechanical constant-temperature heat detector 1 shown in Examples 1 and 2, the heat detector 4 shown in Example 3 is a thermistor constant-temperature type, and measures temperature by changing the resistance value of the heat sensor 42, which is a thermistor, depending on the temperature. The heat detector 4 then activates when it determines that the temperature has reached a predetermined activation temperature. When activated, a confirmation light 43 attached to the housing 41 lights up.

[0027] The main body 51 of the heating tester 5 has a device panel 512 attached to the inside underside of the main body frame 511. The device panel 512 includes a control unit 513, a battery 514, a thermistor 516 as a temperature sensor, a light-receiving sensor 517, a transceiver 518, and a circulator 519. The control unit 513 has a CPU and memory. The light-receiving sensors 517 are provided to receive light from the confirmation lamp 43 of the heat detector 4, and are provided in multiple locations so that the light emitted by the confirmation lamp 43 can be received regardless of the rotational position of the main body 51 of the heating tester 5, which is circular when viewed from below, relative to the heat detector 4. A heater 515 is also provided on the side of the main body frame 511. The heater 515 consists of a Peltier element and a heat exchanger. One surface of the Peltier element is in contact with the heat exchanger, and the other surface is exposed to the outside of the main body frame 511. The heat exchanger is provided inside the main body frame 511. The heater 515 and the circulator 519 form a heating device.

[0028] Each device in the main body 51 of the heating tester 5 operates using power supplied from a battery 514. Furthermore, the heater 515 and the circulator 519 are controlled by a control unit 513, and light reception information is sent from a light receiving sensor 517 and temperature information is sent from a thermistor 516 to the control unit 513. Furthermore, the control unit 513 wirelessly transmits and receives information to and from an external device N via a transmitting / receiving unit 518. The external device N in Example 3 is also a notebook computer.

[0029] In the state shown in FIG. 5 , when the heating tester 5 is operated from the external device N, the heater 515 and the circulator 519 are activated. The heater 515, consisting of a Peltier element and a heat exchanger, supplies heat to the inside of the main body frame 511 of the main body 51. The supplied heat is transformed into warm air by the airflow generated by the circulator 519 and spreads throughout the space inside the main body 51 and the hood 54, heating the heat sensor 42 of the heat detector 4. The resistance of the heat sensor 42, which is a thermistor, increases as the temperature rises, and the temperature is calculated by the heat detector 4 as the detector temperature Ts. The detector temperature Ts is transmitted via confirmation light communication by flashing the confirmation light 43. In confirmation light communication, information is transmitted by flashing the confirmation light 43 with short-term light emissions that are imperceptible to the human eye. In confirmation light communication, the interval between short-term light emissions is set to a certain length, and the time-averaged brightness is set to be imperceptible to the human eye.

[0030] The heating tester 5 also measures the temperature inside the main body 51 using the thermistor 516, which is a temperature sensor. The measured temperature is then stored by the control unit 513 as the tester temperature Tt. In addition, the light receiving sensor 517 receives light emitted by the confirmation light 43, and the heating tester 5 receives the detector temperature Ts, which is the temperature measurement value of the heat detector 4, via confirmation light communication.

[0031] The control unit 513 of the heating tester 5 in Example 3 stores multiple sets of temperature data Pn, each set including the tester temperature Tt measured by the heating tester 5 after heating has started and the sensor temperature Ts received via confirmation light communication, for different times from the start of heating. The tester temperature Tt and the sensor temperature Ts in the multiple temperature data sets Pn are lower than the activation temperature Ta and are reached in a shorter time than the activation temperature Ta. In Example 3, the sensing error dT is predicted by calculating the tester temperature Tt and the sensor temperature Ts when the activation temperature Ta is reached using the multiple temperature data sets Pn obtained over a short period of time.

[0032] The sequence of the sensing test using the heating tester 5 in the third embodiment will be described with reference to FIG. 6. The heat detector 4 monitors the temperature using the thermal sensor 42, and transmits the detector temperature Ts calculated from the resistance value via confirmation light communication from the confirmation light 43 (step S11). The light for confirmation light communication flashes by repeating short flashes faster than the reaction speed of the human eye, so humans cannot recognize the light emitted by the confirmation light 43. When the tester holds the heating tester 5 over the heat detector 4 and inputs a test start command into the external device N (step S12), a test start command is transmitted wirelessly from the external device N. When the test start command is received by the transceiver 518 of the heating tester 5 and sent to the control unit 513, the control unit 513 activates the heating device, which consists of the heater 515 and the circulator 519, to start heating (step S13).

[0033] Heating is performed continuously, and the temperature of the heat sensor 42 of the heat detector 4 continuously rises. When the detector temperature Ts is received at predetermined time intervals, the tester temperature Tt at that time is measured and acquired, and stored together with the received detector temperature Ts (steps S141, S142, etc.). When the tester temperature Tt exceeds the designated temperature Tp, a sensing error dT is calculated by prediction from the stored data on the detector temperatures Ts and the tester temperatures Tt (step S15). Then, under the control of the control unit 513, the transceiver unit 518 wirelessly transmits data on the sensing error dT to the external device N (step S16). The external device N receives the sensing error dT, determines whether it is within an appropriate range, and displays the result on the display (step S17). This allows the fire detection sensitivity of the heat detector 4 to be tested.

[0034] Fig. 7 is a graph related to the prediction of the sensed temperature difference dt in step S15. The horizontal axis represents the tester temperature Tt measured by the heating tester 5, and the vertical axis represents the detector temperature Ts measured by the heat detector 4. Temperature group data P1 to P4 shown in the graph of Fig. 7 represent data sets of the detector temperatures Ts received sequentially in the confirmation light communication and the tester temperatures Tt at the time the detector temperatures Ts were received.

[0035] In the third embodiment, the activation temperature group data Pp is predicted using the temperature group data P1 to P4 shown in Figure 7. The activation temperature group data Pp includes the tester temperature Tt and a predicted detector temperature Ts', which is the detector temperature Ts when the tester temperature Tt reaches the activation temperature Ta. Because the temperature group data P4 exceeds the specified temperature Tp, no further temperature group data Pn is acquired in step S15 shown in Figure 6. The highest temperature, the temperature group data P4, is lower than the activation temperature Ta. By obtaining the activation temperature group data Pp from these temperatures and predicting the detector temperature Ts when the activation temperature Ta is reached, the heat detection test can be terminated early.

[0036] In order to predict the operating temperature group data Pp, the control unit 513 determines the following prediction function F by the least squares method using the temperature group data P1 to P4 acquired in steps S141, S142, . . . Prediction function F: Sensor temperature Ts = a * Tester temperature Tt + b, b is a constant... Equation (1) The least squares method determines the constants a and b. The prediction function F is a function that calculates the sensor temperature Ts from the tester temperature Tt, and can predict the sensor temperature Ts at tester temperatures Tt that are higher than the temperature pair data P4.

[0037] Then, the predicted sensor temperature Ts', which is the sensor temperature Ts when the tester temperature Tt is the operating temperature Ta, is predicted as follows. Predicted sensor temperature Ts' = a * operating temperature Ta + b Equation (2) The actuation temperature pair data Pp shown in FIG. 7 is a pair of actuation temperature Ta and predicted sensor temperature Ts'.

[0038] Furthermore, the sensing error dT is calculated as follows: Sensing error dT = |Activation temperature Ta - Predicted sensor temperature Ts'|···Equation (3) The sensing error dT is calculated as an absolute value.

[0039] 8 shows an operation flow diagram of the heating tester 5 in Example 3. The heating tester 5 first determines whether there is a test command (step S21). If there is a test command (YES), proceed to the next step S22, and if there is a test command (NO), return to the previous step and repeat until there is a test command. Next, the heater 515 and circulator 519 are activated to start heating, and n is set to 1 (step S22).

[0040] Then, the detector temperature Ts is received and the tester temperature Tt is measured and stored as temperature pair data Pn (step S23). Initially, n=1, so temperature pair data P1 is stored. Then, it is determined whether the tester temperature Tt is greater than the designated temperature Tp (step S24). As shown in FIG. 7, the designated temperature Tp is lower than the operating temperature Ta. If the answer is YES, proceed to the next step S26. In the graph of FIG. 7, when temperature pair data P4 is obtained, the tester temperature Tt is greater than the designated temperature Tp, so proceed to step S26. On the other hand, if the answer is NO, n is incremented by 1 and the device is stopped for a predetermined time (step S25). Once the stop is complete, the process returns to before step S23. At the point in time when proceeding to step S26, the detector temperatures Ts at multiple points in time are obtained through confirmation light communication. In the example of FIG. 7, four detector temperatures Ts are obtained as temperature pair data P1 to P4 along with the tester temperature Tt. The tester temperature Tt rises continuously, but the temperature data set P4 is obtained at a time earlier than the tester temperature Tt reaches the operating temperature Ta.

[0041] At step S26, a plurality of temperature pair data P1... are stored. In the example shown in Fig. 7, four temperature pair data P1 to P4 are stored. Then, a prediction function F is calculated from these data by the least squares method (step S26). Specifically, the constants a and b in the above-mentioned equation (1) are calculated.

[0042] Then, the predicted sensor temperature Ts' is calculated using the above-mentioned equation (2) (step S27). The predicted sensor temperature Ts' is the sensor temperature Ts when the tester temperature Tt is the activation temperature Ta. After that, the sensing error dT is calculated using the above-mentioned equation (3) (step S28) and transmitted to the external device N (step S29).

[0043] As described above, the output of the thermistor 516, which is a temperature sensor, is used to test the fire detection sensitivity of the heat detector 4 covered with the hood 54, based on the detector temperature Ts at multiple points in time obtained through confirmation light communication. In Example 3, because temperature prediction is used, the detection error dT is obtained before the activation temperature Ta is reached, and it can be determined whether the temperature error at which the heat detector 4 activates is appropriate. [Example]

[0044] The heating tester 6 of Example 4 is a simpler configuration of the heating tester 5 of Example 3. The heating tester 6 is not provided with a heating device as in Examples 1-3.

[0045] FIG. 9 shows a situation in which a thermistor-type constant-temperature heat detector 4 is being tested using a heating tester 6 in Example 4. In FIG. 9, the heat detector 4 is shown from the side, and the heating tester 6 is shown in cross section. The heating tester 6 has a main body 61 rotatably attached to a bracket 62, which is fixed to an arm 63. The main body 61 has a body frame 611, which is the housing of the main body 61, and is cylindrical with a bottom. A cylindrical hood 64 is attached to the opening on the opposite side of the bottom. In FIG. 9, a tester holds the arm 63 and lifts the heating tester 6, pressing the hood 64 against the periphery of the heat detector 4. The hood 64 is flexible, and during testing, it comes into contact with the ceiling C around the heat detector 4, forming an enclosed space inside. If the heat detector 4 is large, it will come into contact with the housing of the heat detector 4 to form an enclosed space.

[0046] The main body 61 of the heating tester 6 has a device panel 612 attached to the inside underside of a main body frame 611. The device panel 612 has a control unit 613, a battery 614, a thermistor 616 as a temperature sensor, a light receiving sensor 617, and a transmitter / receiver 618. The control unit 613 has a CPU and memory. The light receiving sensors 617 are provided to receive light from the confirmation lamp 43 of the heat detector 4, and are provided in multiple locations so that light emitted by the confirmation lamp 43 can be received regardless of the rotational position of the main body 61 of the heating tester 6, which is circular when viewed from below, relative to the heat detector 4.

[0047] Each device in the main body 61 of the heating tester 6 operates on power supplied from a battery 614. Furthermore, light receiving information is sent from the light receiving sensor 617 and temperature information is sent from the thermistor 616 to the control unit 613. The control unit 613 wirelessly transmits and receives information to and from an external device N via a transmitting / receiving unit 618. The external device N in Example 4 is also a notebook computer.

[0048] As explained in the third embodiment, in the heat detector 4, the resistance value of the heat sensor 42, which is a thermistor, increases as the temperature rises. The heat detector 4 calculates the temperature as the detector temperature Ts and transmits the detector temperature Ts from the confirmation light 43 via confirmation light communication. In the heating tester 6, the light-receiving sensor 617 receives the light emitted by the confirmation light 43 and receives the detector temperature Ts, which is the temperature measurement value of the heat detector 4, via confirmation light communication.

[0049] 10 shows an operation flow diagram of the heating tester 6 in Example 4. The heating tester 6 first determines whether there is a test command from the external device N (step S31). If there is a test command, YES, proceed to the next step S32; if NO, return to the previous step and repeat until there is a test command. Next, the sensor temperature Ts is received via confirmation light communication and the tester temperature Tt is measured (step S32). Thereafter, a sensing error dT is calculated by prediction using a prediction function Fd, which is a function with the sensor temperature Ts and the tester temperature Tt as variables (step S33), and is sent to the external device N (step S34).

[0050] The prediction function Fd is a function that uses the detector temperature Ts and the tester temperature Tt as variables, and is pre-stored in the heating tester 6. This prediction function Fd is used to predict the predicted detector temperature Ts', which is the detector temperature Ts when the tester temperature Tt reaches the activation temperature Ta, based on a set of temperature data of the detector temperature Ts and the tester temperature Tt, and the sensing error dT is calculated using equation (3) shown in Example 3. The external device N receives the data on the sensing error dT, determines whether it is within an appropriate range, and displays the result on the display unit. This allows the fire detection sensitivity of the heat detector 4 to be tested.

[0051] As described above, in Example 4, the output of the thermistor 616, which is a temperature sensor, is used to test the fire detection sensitivity of the heat detector 4 covered with the hood 54. Since the predicted detector temperature Ts' is predicted using a single set of temperature data, i.e., the detector temperature Ts and the tester temperature Tt, no temperature change is required, and therefore the heating tester 6 of Example 4 is not equipped with a heating device. The heating tester 5 of Example 3 uses multiple temperature data sets and can predict the predicted detector temperature Ts' and detection error dT more accurately than Example 4. Meanwhile, the heating tester 6 of Example 4 does not require multiple measurements, so the test time is shorter, and since it does not have a heating device, the device configuration is simpler than that of the heating tester 5 of Example 3.

[0052] In the first embodiment, the ultrasonic heater 215 is used to heat the heat receiving plate 13. However, the heat receiving plate 13 may be heated by other heating devices such as an infrared heater.

[0053] In Example 2, a Peltier element and a heat exchanger are used as the heating device. The heat exchanger is provided to increase the efficiency of heat exchange and may be omitted. Also, instead of using a Peltier element for the heater 315, other heating devices such as a heater using thermal resistance or a heater using fuel may be used.

[0054] In the third embodiment, when the tester temperature Tt becomes greater than the designated temperature Tp in step S24, the prediction function F is calculated to obtain a plurality of temperature pair data Pn. However, the prediction function F may be calculated when the number of times the temperature pair data Pn has been stored reaches a predetermined number or more, or the prediction function F may be calculated from a plurality of temperature pair data Pn in response to other conditions, such as when a predetermined time has elapsed since the start of heating.

[0055] In the fourth embodiment, the sensing error dT is predicted from the detector temperature Ts and the tester temperature Tt at temperatures lower than the activation temperature Ta of the heat detector 4, and the test is performed. However, it is also possible to determine an allowable temperature difference between the detector temperature Ts and the sensing error dT for each temperature lower than the activation temperature Ta, and perform the test based on whether the detector temperature Ts and the sensing error dT are within the allowable temperature difference range. In the third embodiment, the test may also be performed by determining whether all of the plurality of temperature pair data Pn are within the allowable temperature difference range.

[0056] In Examples 3 and 4, confirmation light communication is used to transmit the detector temperature Ts from the heat detector 4. However, other communication methods may be used. For example, the detector temperature Ts may be transmitted directly to the external device N via wireless communication, and the tester temperature Tt may be acquired under control of the external device N. The sensing error dT may be calculated by the external device N. Also, in Examples 3 and 4, the external device N determines whether the sensing error dT is appropriate and displays it. However, the data itself may be displayed in addition to displaying whether it is appropriate. By displaying the data itself, if the tester can determine that the data is appropriate but close to inappropriate, they may replace the heat detector in conjunction with replacing another heat detector. Also, in Examples 1 and 2, instead of determining whether the activation temperature Ta is within a predetermined temperature range and displaying it, the activation temperature Ta may simply be displayed, or both the determination result and the activation temperature Ta may be displayed.

[0057] Furthermore, the specific configuration is not limited to the embodiments, and the present invention includes design changes within the scope of the gist of the present invention. Furthermore, the above-mentioned examples and modifications can be combined by utilizing each other's technology as long as there are no particular contradictions or problems in the purpose, configuration, etc. [Explanation of symbols]

[0058] C Ceiling, N External device, Ts sensor temperature, Tt tester temperature, Ta operating temperature, Ts' predicted sensor temperature, dT sensing error, Tp specified temperature, Pn temperature group data, Pp operating temperature group data, F prediction function, a,b constants, Fd prediction function, 1 heat sensor, 11 housing, 12 heat sensor, 13 heat receiving plate, 14 confirmation light, 2 Heating tester, 21 Main body, 211 Main body frame, 212 Device panel, 213 Control unit, 214 Battery, 215 Ultrasonic heater, 216 Infrared sensor, 217 Light receiving sensor, 218 Transmitter / receiver, 22 Bracket, 23 Arm, 24 Hood, 3 Heating tester, 31 Main body, 311 Main body frame, 312 Device panel, 313 Control unit, 314 Battery, 315 Heater, 316 Infrared sensor, 317 Light receiving sensor, 318 Transmitter / receiver, 319 Circulator, 32 Bracket, 33 Arm, 34 Hood, 4 Heat detector, 41 Housing, 42 Heat sensor, 43 Check light, 5 Heating tester, 51 main body, 511 main body frame, 512 device panel, 513 control unit, 514 battery, 515 heater, 516 thermistor, 517 light receiving sensor, 518 transmitter / receiver, 519 circulator, 52 bracket, 53 arm, 54 hood, 6 Heating tester, 61 Main body, 611 Main body frame, 612 Device panel, 613 Control unit, 614 Battery, 616 Thermistor, 617 Light receiving sensor, 618 Transmitter / receiver, 62 Bracket, 63 Arm, 64 Hood

Claims

1. A body and a hood attached to the body, the body has a temperature sensor; A heating tester characterized in that the output of the temperature sensor is used to test the fire detection sensitivity of the heat detector covered with the hood.

2. A heating device is provided, 2. A heating tester according to claim 1, wherein the heat detector is heated stepwise by several degrees by the heating device, and the fire detection sensitivity is tested based on the temperature at which the heat detector is activated.

3. The heating device is an ultrasonic heater that vibrates and heats the heat receiving plate of the heat detector with ultrasonic waves, 3. The heating tester according to claim 2, wherein the temperature sensor measures the temperature by infrared rays from the heat receiving plate.

4. A heating device is provided, A heating tester as described in claim 1, characterized in that it receives a detector temperature from a heat detector and tests the fire detection sensitivity at a temperature lower than the operating temperature of the heat detector based on the detector temperature and the output of the temperature sensor.

5. 5. A heating tester according to claim 4, wherein the fire detection sensitivity is tested based on the temperature of the detector at a plurality of points in time.

6. No heating device is provided, A heating tester as described in claim 1, characterized in that it receives a detector temperature from a heat detector and tests the fire detection sensitivity at a temperature lower than the operating temperature of the heat detector based on the detector temperature and the output of the temperature sensor.

7. 7. The heating tester according to claim 4, wherein the temperature of the sensor is received by confirmation light communication.

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