Temperature detection alarm and alarm system

Abstract

The utility model provides a temperature detection alarm and an alarm system. The temperature detection alarm mainly comprises a temperature detector, a controller and a passive power supply module, the temperature detector is used for detecting the cable temperature of the to-be-detected cable; the controller is electrically connected with the temperature detector and is used for receiving the cable temperature and judging whether alarm information is generated or not according to the cable temperature; the passive power supply module is electrically connected with the controller and is used for supplying power to the controller; the passive power supply module comprises an induction coil and a power taking alloy sheet; the induction coil is electrically connected with the controller, and the electricity taking alloy sheet is attached to the induction coil and surrounds a cable to be detected. Thus, the temperature detection alarm can be installed at any temperature measurement position needing to be monitored according to requirements, the flexibility is high, the passive power supply module is adopted for supplying power, and the temperature detection alarm provided by the embodiment of the utility model has the advantages of high sustainability, stable operation state and accurate measurement data.

Description

Technical Field

[0001] The present application relates to the technical field of temperature monitoring, and in particular to a temperature detection alarm and an alarm system. Background Art

[0002] In the semiconductor production process, the stability of power supply is the key to ensuring product yield and quality. The stability of power supply is closely related to cables (important carriers for transmitting electrical energy). To ensure the stability of power supply, when using cables for power supply, the cable temperature should be controlled within the allowable range. Excessive cable temperature may lead to accelerated insulation aging, increase the possibility of tripping, increase the risk of electric shock, and even cause damage to the cable, fire, and uncontrollable production safety accidents.

[0003] In the related art, the cable temperature of the cable to be tested can be detected by a wireless temperature measuring device. The wireless temperature measuring device includes: a temperature sensor fixed on the surface of the cable, the temperature sensor is connected to the temperature measuring machine through an optical fiber, the temperature measuring machine can convert the received optical signal into temperature data, the network switch receives the temperature data sent by the temperature measuring machine wirelessly, the network switch transmits the temperature data to the central control system, and the central control system monitors the temperature change through the temperature data and determines whether to issue a temperature alarm.

[0004] However, once it is found that the measurement range of temperature monitoring is small, in order to increase the measurement points, it is necessary to fix the temperature sensor at the corresponding position and connect the temperature sensor to the temperature measuring machine through optical fiber to increase the measurement range of temperature monitoring, resulting in poor flexibility of the wireless temperature measuring device. Utility Model Content

[0005] The technical problem to be solved by the present application is that the existing wireless temperature measuring devices have poor flexibility.

[0006] To solve the above technical problems, on the one hand, the present application provides a temperature detection alarm, including: a temperature detector, a controller and a passive power supply module;

[0007] The temperature detector is used to detect the cable temperature of the cable to be tested;

[0008] The controller is electrically connected to the temperature detector, and is used to receive the cable temperature and determine whether to generate the alarm information according to the cable temperature;

[0009] The passive power supply module is electrically connected to the controller, and is used to supply power to the controller; the passive power supply module includes an induction coil and a power-taking alloy sheet;

[0010] The induction coil is electrically connected to the controller, the power-collecting alloy sheet is in contact with the induction coil, and the power-collecting alloy sheet surrounds the cable to be tested.

[0011] In some embodiments of the present application, the temperature detector detects the cable temperature of the cable to be tested by a contact temperature sensor; or, the temperature detector detects the cable temperature of the cable to be tested by a non-contact temperature sensor.

[0012] In some embodiments of the present application, the temperature detection alarm further includes a fixing member, which is disposed on the power-taking alloy sheet and is used to fix the power-taking alloy sheet on the cable to be tested.

[0013] In some embodiments of the present application, the fixing member is a lock.

[0014] In some embodiments of the present application, the temperature detection alarm also includes a display, which is used to display the cable temperature and alarm information; the controller is electrically connected to the display, and is also used to instruct the display to display the cable temperature and the alarm information.

[0015] In some embodiments of the present application, the temperature detection alarm further includes a housing, and the thermometer, the display, the controller and the passive power supply module are encapsulated in the housing.

[0016] In some embodiments of the present application, the temperature detection alarm further includes a buzzer, and the buzzer is electrically connected to the controller.

[0017] In some embodiments of the present application, the housing is provided with an inverted hole, the buzzer is packaged in the housing, and the sound-emitting side of the buzzer is in contact with the inverted hole.

[0018] In some embodiments of the present application, the housing is provided with a screen display window, the display includes an LED display screen, and the LED display screen displays the cable temperature and the alarm information through the screen display window.

[0019] In some embodiments of the present application, the passive power supply module also includes a filtering circuit, a protection circuit, a rectifying circuit, a discharge circuit and a voltage stabilizing circuit; the filtering circuit is electrically connected to the induction coil for filtering the induced current in the induction coil; the protection circuit is electrically connected to the filtering circuit for discharging the induced current to protect the back-end circuit; the rectifying circuit is electrically connected to the protection circuit for rectifying the AC induced current into a DC current; the discharge circuit is electrically connected to the rectifying circuit for instantly releasing the capacity stored when the magnetic core of the induction coil is saturated; the voltage stabilizing circuit is electrically connected to the discharge circuit for stably outputting the supply voltage corresponding to the DC current.

[0020] In some embodiments of the present application, the controller includes a first wireless communication module; and the controller sends the cable temperature through the first wireless communication module.

[0021] On the other hand, the present application provides a temperature detection alarm system, including: a plurality of temperature detection alarms and a central control system;

[0022] The temperature detection alarm is used to obtain the cable temperature of the cable to be tested, and send the cable temperature to the central control system through the first wireless communication module;

[0023] The central control system is used to receive the cable temperatures of the plurality of temperature detection alarms through the second wireless communication module, display the cable temperatures, monitor the temperature changes of the cable temperatures and determine whether to generate alarm information.

[0024] Compared with the prior art, the technical solution of the present application extends the power-taking alloy sheet out of the shell and surrounds the cable to be tested. When the cable to be tested is energized, the induction coil generates an induced current. At this time, the passive power supply module supplies power to the controller. The thermometer is used to detect the cable temperature of the cable to be tested. The controller is electrically connected to the thermometer, and is used to receive the cable temperature and determine whether to generate an alarm message based on the cable temperature. In this way, the temperature detection alarm provided by the embodiment of the present application is highly flexible and can be installed at any temperature measurement location that needs to be monitored as required. The passive power supply module is used to supply power, so that the temperature detection alarm provided by the embodiment of the present application has strong sustainability, stable operating state and accurate measurement data. The temperature detection alarm provided by the embodiment of the present application is convenient to use and highly operable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The following figures describe in detail the exemplary embodiments disclosed in this application. The same reference numerals represent similar structures in several views of the drawings. Those skilled in the art will understand that these embodiments are non-limiting, exemplary embodiments, and the drawings are only for the purpose of illustration and description, and are not intended to limit the scope of this application. Other embodiments may also accomplish the inventive intent in this application. It should be understood that the drawings are not drawn to scale.

[0026] Figure 1 is a schematic diagram of the structure of a temperature detection alarm according to some embodiments of the present application;

[0027] Figure 2 is a schematic diagram of the position structure of the temperature test window according to some embodiments of the present application;

[0028] Figure 3 It is a schematic diagram of the temperature measurement principle of the infrared temperature measuring probe shown in some embodiments of the present application;

[0029] Figure 4 is a schematic diagram of the structure of a fixing member according to some embodiments of the present application;

[0030] Figure 5 is a schematic diagram of the structure of the inverted hole according to some embodiments of the present application;

[0031] Figure 6 is a schematic diagram of the structure of a temperature detection alarm system according to some embodiments of the present application;

[0032] Description of the drawings: 11 - thermometer, 12 - display, 13 - controller, 14 - passive power supply module, 21 - housing 21, 22 - temperature test window, 31 - infrared transmitter, 32 - infrared receiver, 33 - cable to be tested, 41 - fixing part, 42 - power supply alloy sheet, 51 - inverter hole, 61 - temperature detection alarm and 62 - central control system. DETAILED DESCRIPTION

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation. It should be clearly understood that the drawings are only for the purpose of illustration and description and are not intended to limit the scope of disclosure of this specification.

[0034] It should be understood that the "module" and "circuit" used herein are a method for distinguishing different components, elements, parts, portions or assemblies at different levels. However, if other words can achieve the same purpose, the words can be replaced by other expressions.

[0035] The terms used in this application are only used to describe the purpose of specific example embodiments, and are not restrictive. When used in this specification, the terms "include", "comprise" and / or "contain" mean to refer to the associated integer, step, operation, element and / or component existence, but do not exclude the existence of one or more other features, integers, steps, operations, elements, components and / or groups or other features, integers, steps, operations, elements, components and / or groups can be added in the temperature detection alarm / temperature detection alarm system. When describing the association of different components in this specification, it can be a direct relationship or an indirect relationship. For example, "A and B are connected" can be A and B directly connected, or A and B can be indirectly connected through other components.

[0036] In the related art, the temperature of the cable can be measured by using a handheld thermometer. Since different temperatures correspond to different radiation bands, the handheld thermometer determines the cable temperature based on the wavelength of infrared radiation reflected by the cable. Since there are errors in the temperature measurement position selected manually, there may be errors in the accuracy of the measured cable temperature. If it is determined that there may be a temperature problem with the cable and a second measurement is performed, it is impossible to understand the temperature change of the cable in time, resulting in a lag in temperature measurement. In addition, the temperature measurement data measured by the handheld thermometer is not easy to store, resulting in the inability to perform data analysis on the temperature change of the cable based on real-time data and historical records. In the process of measuring the cable temperature, it is necessary to measure different cables one by one multiple times, and to measure the same position of the same cable multiple times, which may waste time and manpower and increase cable maintenance costs.

[0037] In the related art, the cable temperature of the cable to be tested can be detected by a wireless temperature measuring device. However, the temperature alarm can only be issued through the central control system, and the real-time cable temperature and temperature alarm status cannot be intuitively understood in the power supply area and floor outside the central control system. Once it is found that the measurement range of temperature monitoring is small, in order to increase the measurement range of temperature monitoring, it is necessary to fix the temperature sensor at the corresponding position to increase the measurement points, and connect the temperature sensor to the temperature measuring machine through optical fiber, resulting in poor flexibility in detecting the cable to be tested through the wireless temperature measuring device.

[0038] Based on the above analysis, if Figure 1 As shown, the temperature detection alarm provided in the embodiment of the present application may include: a temperature detector 11, a controller 13 and a passive power supply module 14;

[0039] The temperature detector 11 is used to detect the cable temperature of the cable 33 to be tested;

[0040] The controller 13 is electrically connected to the temperature detector 11, and is used to receive the cable temperature and determine whether to generate the alarm information according to the cable temperature;

[0041] The passive power supply module 14 is electrically connected to the controller 13, and is used to supply power to the controller 13; the passive power supply module 14 includes an induction coil and a power-taking alloy sheet 42;

[0042] The induction coil is electrically connected to the controller 13 , the power-collecting alloy sheet 42 is in contact with the induction coil, and the power-collecting alloy sheet 42 surrounds the cable to be tested 33 .

[0043] In some embodiments of the present application, Figure 1 As shown, the temperature detection alarm also includes a display 12, and the display 12 is used to display the cable temperature and alarm information; the controller 13 is electrically connected to the display 12, and is also used to instruct the display 12 to display the cable temperature and the alarm information.

[0044] In this way, the temperature detection alarm provided by the embodiment of the present application is highly intuitive, the safety hazard of cable overheating is easy to detect, and the alarm direction can be quickly located during the inspection process.

[0045] In some embodiments of the present application, the temperature detection alarm further includes a housing 21 , and the thermometer 11 , the display 12 , the controller 13 and the passive power supply module 14 are encapsulated in the housing 21 .

[0046] In some embodiments of the present application, if the thermometer 11 can only detect the cable temperature when powered by a power supply, then through the electrical connection between the controller 13 and the thermometer 11, the controller 13 can both power the thermometer 11 and obtain the cable temperature detected by the thermometer 11.

[0047] In some embodiments of the present application, the temperature detector 11 detects the cable temperature of the cable to be tested 33 through a contact temperature sensor; or, the temperature detector 11 detects the cable temperature of the cable to be tested 33 through a non-contact temperature sensor. Exemplarily, the contact temperature sensor may be a thermocouple or a thermal resistor; the non-contact temperature sensor may be an infrared temperature sensor.

[0048] like Figure 2As shown, when the temperature detector 11 is encapsulated in the housing 21 , the housing 21 may be provided with a temperature test window 22 , and the temperature detector 11 tests the cable temperature of the cable 33 to be tested through the temperature test window 22 .

[0049] In one case, the contact temperature sensor fits the cable to be tested 33 through the temperature test window 22, and uses the thermoelectric effect to detect the cable temperature. It is understandable that the temperature detector 11 can also be provided with an elastic member, one end of which is fixedly arranged in the temperature detector 11, and the other end of the elastic member is fixedly connected to the contact temperature sensor, and the elastic member is extended and retracted so that the contact temperature sensor can fit the cable to be tested 33 through the temperature test window.

[0050] Exemplarily, the elastic member may be a spring.

[0051] In another case, if Figure 3 As shown, the non-contact temperature sensor mainly includes an infrared transmitter 31 and an infrared receiver 32. The infrared transmission line emitted by the infrared transmitter 31 can pass through the temperature test window 22 and directly reach the cable to be tested 33. The infrared reflection line reflected by the cable to be tested 33 is received by the infrared receiver 32, and finally the cable temperature is obtained through the built-in temperature measurement, logic, and information transmission algorithm. There is no shielding between the infrared transmitter 31 and the cable to be tested 33.

[0052] It is understandable that, depending on the temperature and emissivity of the object, the cable 33 to be tested will emit a certain proportion of radiation energy when irradiated, and the infrared receiver 32 of the infrared temperature measuring probe will perform temperature measurement based on the corresponding ray intensity after receiving the radiation.

[0053] In some embodiments of the present application, the controller 13 is used to receive the cable temperature, instruct the display 12 to display the cable temperature, and the display 12 displays the cable temperature according to the first indication information sent by the controller 13. The controller 13 is also used to determine whether to generate the alarm information according to the cable temperature, and the display 12 displays the alarm information according to the second indication information sent by the controller 13.

[0054] In some embodiments of the present application, the housing 21 may be provided with a screen display window, which is on the opposite side of the temperature test window 22. The display includes an LED display screen, which displays the cable temperature and the alarm information through the screen display window. The controller 13 may also supply power to the display 12.

[0055] In some embodiments of the present application, the display 12 can be used to display the temperature status of the cable 33 to be tested, and the temperature status includes at least: normal status, warning status and alarm status. When the cable temperature is less than the first threshold temperature, the background color of the LED display is set to green, which is used to indicate that the temperature status of the cable 33 to be tested is normal; when the cable temperature is greater than or equal to the first threshold temperature, and the cable temperature is less than or equal to the second threshold temperature, the background color of the LED display is set to yellow, which is used to indicate that the temperature status of the cable 33 to be tested is a warning status; when the cable temperature is greater than the second threshold temperature, the background color of the LED display is set to red, which is used to indicate that the temperature status of the cable 33 to be tested is an alarm status.

[0056] It is understandable that the cable 33 to be tested can be a low-voltage cable, using polyvinyl chloride insulation and sheath. The normal operating temperature of the cable 33 to be tested is generally 70 degrees Celsius to 90 degrees Celsius. Exemplarily, the first threshold temperature is 85 degrees Celsius, and the second threshold temperature is 90 degrees Celsius.

[0057] In this way, the temperature status of the cable to be tested 33 is intuitively and distinctively displayed according to the background color of the LED display screen, so that the potential safety hazard of overheating of the cable to be tested is easy to be detected, and the alarm direction can be quickly located during the inspection process.

[0058] In some embodiments of the present application, Figure 4 As shown, the temperature detection alarm further includes a fixing member 41, which is disposed on the power-taking alloy sheet 42, and is used to fix the power-taking alloy sheet 42 on the cable to be tested 33. The fixing member 41 is a lock buckle.

[0059] In some embodiments of the present application, the fixing member 41 can be movably fixed to the power-taking alloy sheet 42. The middle part of the power-taking alloy sheet 42 is fixedly arranged in the housing 21, and the two side parts of the power-taking alloy sheet 42 extend out of the housing 21 and surround the cable 33 to be tested.

[0060] It should be noted that the power-taking alloy sheet 42 extends out of the housing 21 and surrounds the cable to be tested 33. When the cable to be tested 33 is powered on, the induction coil generates an induced current to power the temperature detection alarm. When the cable to be tested 33 is powered off, the induction coil does not generate an induced current, and the temperature detection alarm cannot be powered off. At the same time, since the cable temperature is caused by the power-on current, when the cable to be tested 33 is powered off, the cable to be tested will not overheat, and there is no need to issue a high temperature warning for the cable to be tested 33.

[0061] In this way, the temperature detection alarm is powered according to the current of the cable to be tested and the passive power supply module, which can not only detect the cable temperature of the cable to be tested 33 in time, but also reduce the operating time of the temperature detection alarm and increase the life of the temperature detection alarm.

[0062] In some embodiments of the present application, the temperature detection alarm further includes a buzzer, and the buzzer is electrically connected to the controller 13. When the controller 13 instructs the display 12 to display the alarm information, the controller 13 is also used to instruct the buzzer to emit an alarm sound.

[0063] In an exemplary embodiment, when the cable temperature is less than a first threshold temperature, the controller 13 does not send instruction information to the buzzer; when the cable temperature is greater than or equal to the first threshold temperature and the cable temperature is less than or equal to a second threshold temperature, the controller 13 instructs the buzzer to emit a first alarm sound; when the cable temperature is greater than the second threshold temperature, the controller 13 instructs the buzzer to emit a second alarm sound. The first alarm sound is different from the second alarm sound.

[0064] In the second exemplary embodiment, when the cable temperature is less than or equal to the second threshold temperature, the controller 13 does not send an indication message to the buzzer; when the cable temperature is greater than the second threshold temperature, the controller 13 instructs the buzzer to emit a third alarm sound.

[0065] In some embodiments of the present application, Figure 5 As shown, the housing 21 is provided with an inverted hole 51, the buzzer is encapsulated in the housing 21, and the sound-emitting side of the buzzer is in contact with the inverted hole 51. It should be noted that the number of the inverted hole 51 is at least one. Exemplarily, the inverted hole 51 is provided on one side of the housing 21, and the number of the inverted holes 51 is 9.

[0066] In some embodiments of the present application, the passive power supply module 14 also includes a filtering circuit, a protection circuit, a rectifying circuit, a discharge circuit and a voltage stabilizing circuit; the filtering circuit is electrically connected to the induction coil, and is used to filter the induced current in the induction coil; the protection circuit is electrically connected to the filtering circuit, and is used to discharge the induced current to protect the back-end circuit; the rectifying circuit is electrically connected to the protection circuit, and is used to rectify the AC induced current into a DC current; the discharge circuit is electrically connected to the rectifying circuit, and is used to instantly release the capacity stored when the magnetic core of the induction coil is saturated; the voltage stabilizing circuit is electrically connected to the discharge circuit, and is used to stably output the supply voltage corresponding to the DC current.

[0067] It should be noted that the induction circuit, the filtering circuit, the protection circuit, the rectification circuit, the discharge circuit and the voltage stabilizing circuit are electrically connected in sequence.

[0068] In some embodiments of the present application, the controller 13 may be integrated on a PCB circuit board.

[0069] In some embodiments of the present application, the temperature detector 11 , the controller 13 , the power-collecting alloy sheet 42 , the induction coil and the display 12 are packaged in sequence in the housing 21 along the radial direction of the cable 33 to be tested.

[0070] For example, the communication frequency of the temperature detection alarm is 2.4 GHz, the power supply current is greater than or equal to 3 amperes, and the response time is 500 milliseconds. The length of the housing 21 is 15 cm, the width is 10 cm, and the height is 5 cm.

[0071] Exemplarily, the temperature detection alarm has a temperature measurement range of -50°C to 150°C. In the temperature range of 0°C to 100°C, the temperature measurement accuracy of the temperature detection alarm is ±1°C. In the temperature range above 100°C, the temperature measurement accuracy of the temperature detection alarm is ±2°C. The sampling period of the thermometer is less than 10 seconds.

[0072] Exemplarily, the temperature detection alarm can be installed at the incoming feeder position, upstream of important equipment and main incoming line position, and low-voltage cables that require temperature measurement and supervision. The temperature detection alarm can be installed on each phase line of a three-phase cable, can be installed 50 cm from the top of the substation cabinet, can be installed at the cable joint, can be installed at the cable corner, and can be installed where the cable passes through a building.

[0073] In some embodiments of the present application, the temperature detection alarm is a multifunctional cable temperature alarm device structure. The temperature detection alarm is a cable temperature monitor with temperature status visualization. The temperature detection alarm is a cable temperature monitor with sound and light combined alarm.

[0074] The temperature detection alarm provided in the embodiment of the present application extends the power-taking alloy sheet 42 out of the housing 21 and surrounds the cable to be tested 33. When the cable to be tested 33 is powered on, the induction coil generates an induced current. At this time, the passive power supply module 14 supplies power to the controller 13. The thermometer 11 detects the cable temperature of the cable to be tested 33 through the temperature test window, and the controller 13 receives the cable temperature through the control end of the thermometer 11. The controller 13 instructs the display 12 to display the cable temperature, and the controller 13 is also used to determine whether to display the alarm information through the display 12 according to the cable temperature. The display end of the display 12 displays the cable temperature through the temperature test window 22. The cable temperature of the cable to be tested 33 can be monitored in real time through the display 12, so as to more intuitively understand the real-time changes of the cable temperature, and provide a more efficient inspection method for patrol personnel. The display end of the display 12 displays the alarm information through the temperature test window 22. The high-temperature alarm information can quickly locate the position of the high-temperature cable and respond in time.

[0075] In some embodiments of the present application, the controller 13 includes a first wireless communication module; and the controller 13 sends the cable temperature through the first wireless communication module.

[0076] The first wireless communication module can be implemented by wireless communication technologies such as Bluetooth, infrared, wireless local area network WI FI or ZigBee.

[0077] In this way, the controller 13 can transmit the cable temperature to other devices through the first wireless communication module, so that the cable temperature can be displayed through other devices, and the cable temperature observation equipment can be increased, so that the safety hazard of cable overheating can be easily detected, and the alarm direction can be quickly located during the inspection process.

[0078] Based on the above analysis, if Figure 6 As shown, the temperature detection alarm system provided in the embodiment of the present application may include: a plurality of temperature detection alarms 61 and a central control system 62;

[0079] The temperature detection alarm 61 is used to obtain the cable temperature of the cable to be tested, and send the cable temperature to the central control system 62 through the first wireless communication module;

[0080] The central control system 62 is used to receive the cable temperatures of the multiple temperature detection alarms through the second wireless communication module, display the cable temperatures, monitor the temperature changes of the cable temperatures and determine whether to generate alarm information.

[0081] The first communication module is adapted to the second communication module. The second wireless communication module can be implemented by wireless communication technologies such as Bluetooth, infrared, wireless LAN WI FI or ZigBee. The wireless communication frequency between the first wireless communication module and the second wireless receiving module can be 2.4 GHz, and the transmission distance can be 300 meters.

[0082] In this way, the central control system can receive the cable temperatures detected by multiple temperature detection alarms 61, thereby monitoring the cable temperature distribution in the entire space.

[0083] In this way, the temperature detection alarm provided by the embodiment of the present application is highly intuitive, the potential safety hazard of cable overheating is easy to be detected, and the alarm direction can be quickly located during the inspection process. The temperature detection alarm provided by the embodiment of the present application is highly flexible and can be installed on any cable 33 to be tested that needs to be monitored as required. The passive power supply module 14 is used to power the temperature detection alarm provided by the embodiment of the present application, so that the temperature detection alarm provided by the embodiment of the present application has strong sustainability, stable operating state and accurate measurement data. The temperature detection alarm provided by the embodiment of the present application is convenient to use and has strong operability.

[0084] It should be noted that different embodiments may produce different beneficial effects. In different embodiments, the beneficial effects that may be produced may be any one or a combination of the above, or any other beneficial effects that may be obtained.

[0085] In summary, after reading the contents of this application, those skilled in the art will appreciate that the aforementioned application contents may be presented only in an exemplary manner and may not be restrictive. Although not explicitly stated herein, those skilled in the art will appreciate that this application is intended to encompass various reasonable changes, improvements and modifications to the embodiments. These changes, improvements and modifications are within the spirit and scope of the exemplary embodiments of this application.

[0086] It should also be understood that although the terms first, second, third, etc. can be used to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. Therefore, without departing from the teachings of the present application, the first element in some embodiments can be referred to as the second element in other embodiments. The same reference numerals or the same reference signs represent the same elements throughout the specification.

Claims

1. A temperature detection alarm, characterized in that: The temperature detection alarm comprises a temperature detector (11), a controller (13) and a passive power supply module (14); The temperature detector (11) is used to detect the cable temperature of the cable to be tested; The controller (13) is electrically connected to the temperature detector (11) and is used to receive the cable temperature and determine whether to generate alarm information according to the cable temperature; The passive power supply module (14) is electrically connected to the controller (13), and the passive power supply module (14) is used to supply power to the controller (13); the passive power supply module (14) comprises an induction coil and a power-collecting alloy sheet (42); The induction coil is electrically connected to the controller (13), the power-collecting alloy sheet (42) is in contact with the induction coil, and the power-collecting alloy sheet (42) surrounds the cable to be tested.

2. The temperature detection alarm according to claim 1, characterized in that: The temperature detector (11) detects the cable temperature of the cable to be tested by means of a contact temperature sensor; or, the temperature detector (11) detects the cable temperature of the cable to be tested by means of a non-contact temperature sensor.

3. The temperature detection alarm according to claim 1, characterized in that: The temperature detection alarm further comprises a fixing member (41), wherein the fixing member (41) is arranged on the power-taking alloy sheet (42), and the fixing member (41) is used to fix the power-taking alloy sheet (42) on the cable to be tested.

4. The temperature detection alarm as claimed in claim 3, characterized in that: The fixing member (41) is a lock buckle.

5. The temperature detection alarm according to claim 1, characterized in that: The temperature detection alarm further comprises a display (12), wherein the display (12) is used to display the cable temperature and alarm information; The controller (13) is electrically connected to the display (12), and is also used to instruct the display (12) to display the cable temperature, and to instruct the display (12) to display the alarm information.

6. The temperature detection alarm according to claim 5, characterized in that: The temperature detection alarm further comprises a housing (21), and the temperature detector (11), the display (12), the controller (13) and the passive power supply module (14) are encapsulated in the housing (21).

7. The temperature detection alarm according to claim 6, characterized in that: The temperature detection alarm also includes a buzzer, which is electrically connected to the controller (13).

8. The temperature detection alarm according to claim 7, characterized in that: The housing (21) is provided with an inverted hole (51), the buzzer is encapsulated in the housing (21), and the sound-generating side of the buzzer is in contact with the inverted hole (51).

9. The temperature detection alarm according to claim 6, characterized in that: The housing (21) is provided with a screen display window (31), and the display (12) comprises an LED display screen, and the LED display screen displays the cable temperature and the alarm information through the screen display window (31).

10. The temperature detection alarm according to claim 1, characterized in that: The passive power supply module (14) also includes a filter circuit, a protection circuit, a rectification circuit, a discharge circuit and a voltage stabilization circuit; The filter circuit is electrically connected to the induction coil and is used to filter the induced current in the induction coil; The protection circuit is electrically connected to the filter circuit and is used for discharging the induced current to protect the back-end circuit; The rectifying circuit is electrically connected to the protection circuit and is used to rectify the alternating current into a direct current; The discharge circuit is electrically connected to the rectification circuit and is used to instantly release the energy stored when the magnetic core of the induction coil is saturated; The voltage stabilizing circuit is electrically connected to the discharge circuit and is used for stably outputting a supply voltage corresponding to the direct current.

11. The temperature detection alarm according to any one of claims 1 to 10, characterized in that: The controller (13) comprises a first wireless communication module; The controller (13) sends the cable temperature through the first wireless communication module.

12. A temperature detection alarm system, characterized in that: include: A plurality of temperature detection alarms (61) and a central control system (62) as claimed in claim 11; The temperature detection alarm (61) is used to obtain the cable temperature of the cable to be tested, and send the cable temperature to the central control system (62) through the first wireless communication module; The central control system (62) is used to receive the cable temperatures of the plurality of temperature detection alarms through a second wireless communication module, display the cable temperatures, monitor temperature changes of the cable temperatures and determine whether to generate alarm information.

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