Testing device for batch detection of leakage current sensors
By designing a test device for batch testing of leakage current sensors, the problem of low testing efficiency in existing systems is solved, enabling simultaneous testing of multiple leakage current sensors and improving testing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHUHAI MULTI-INNOVATION TECHNOLOGY CO LTD
- Filing Date
- 2025-03-31
- Publication Date
- 2026-04-10
AI Technical Summary
Existing leakage current sensors have low detection efficiency, typically employing a one-to-one detection mode, which leads to low efficiency.
Design a test device for batch testing of leakage current sensors, including an interface module, a conductor module, a current generation module, a signal processing module, a control module, and an indication module. The device is electrically coupled to the leakage current sensor through multiple interface units to achieve batch testing.
It enables simultaneous detection of multiple leakage current sensors, improving detection efficiency, and has a simple and easy-to-implement structure.
Smart Images
Figure CN224109630U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to test device technical field, especially relates to a test device for batch detection leakage current sensor. BACKGROUND
[0002] Leakage current sensor needs to be detected when leaving factory or after using for a period of time to determine whether to meet design requirement.
[0003] At present, the detection of leakage current sensor usually adopts one-to-one mode, that is, only one current sensor can be detected each time, the current sensor is connected with detection equipment, and the next current sensor is detected after detection is completed, and the detection mode is low in efficiency. UTILITY MODEL CONTENT
[0004] The utility model discloses a test device for batch detection leakage current sensor to solve the problem of low detection efficiency of the leakage current sensor.
[0005] In order to solve the above problem, the utility model adopts the following technical scheme:
[0006] A test device for batch detection leakage current sensor, comprising:
[0007] Interface module, comprising a plurality of interface units, for electrically coupling with at least one leakage current sensor;
[0008] Conductor module, for applying leakage current to the at least one leakage current sensor through a crossbar, the crossbar penetrates the at least one leakage current sensor;
[0009] Current generating module, which is electrically coupled with the conductor module, for providing current for the conductor module;
[0010] Signal processing module, which is switchably electrically coupled with the plurality of interface units, for receiving the output signal of the current leakage current sensor corresponding to the current interface unit electrically coupled with the signal processing module, and determining the detection condition of the current leakage current sensor on leakage current according to the output signal;
[0011] Control module, which is electrically coupled with the interface module, the current generating module and the signal processing module respectively, for controlling the type and current intensity of the current provided by the current generating module, receiving and determining whether the current leakage current sensor meets the design requirement according to the detection condition of the current leakage current sensor on leakage current, and controlling the electrical coupling state of each interface unit in the plurality of interface units and the signal processing module to sequentially detect each leakage current sensor in the at least one leakage current sensor;
[0012] A prompt module electrically coupled to the control module for feeding back the detection result of the at least one leakage current sensor.
[0013] According to some embodiments of the present application, the signal processing module comprises an isolation chip.
[0014] The signal processing module is configured to receive an output signal of a current leakage current sensor corresponding to a current interface unit electrically coupled to the signal processing module, convert the output signal into a level signal through the isolation chip, and determine the detection condition of the leakage current by the current leakage current sensor according to the level signal.
[0015] According to some embodiments of the present application, when the signal processing module is electrically coupled to one interface unit of the plurality of interface units, the signal processing module is in a non-electrically coupled state with the remaining interface units of the plurality of interface units.
[0016] According to some embodiments of the present application, the control module is further configured to determine the information of the interface unit to be tested corresponding to the at least one leakage current sensor according to the electrically coupled state of the plurality of interface units and the at least one leakage current sensor.
[0017] The control module is further configured to control the signal processing module to be electrically coupled to the first interface unit in the information of the interface unit to be tested, and to be electrically decoupled from the first interface unit after determining the detection result of the first leakage current sensor corresponding to the first interface unit, and to control the signal processing module to be electrically coupled to the second interface unit in the information of the interface unit to be tested.
[0018] According to some embodiments of the present application, the prompt module comprises a plurality of prompt units, and the plurality of prompt units are respectively electrically coupled to the control module.
[0019] The control module is further configured to determine the current prompt unit corresponding to the current leakage current sensor according to the current interface unit of the current leakage current sensor and the corresponding relationship between the interface units and the prompt units, and to send the detection result of the current leakage current sensor to the current prompt unit after determining the detection result.
[0020] According to some embodiments of the present application, the prompt unit has a first prompt state and a second prompt state.
[0021] When the leakage current sensor corresponding to the prompt unit meets the design requirements, the prompt unit is in the first prompt state.
[0022] When the leakage current sensor corresponding to the prompt unit does not meet the design requirements, the prompt unit is in the second prompt state.
[0023] According to some embodiments of the present application, the test device further comprises a start module and / or a stop module;
[0024] The start module is configured to send start information to the control module;
[0025] The control module is further configured to sequentially detect each leakage current sensor in the at least one leakage current sensor and feed back the detection result when the start information is received;
[0026] The stop module is configured to send stop information to the control module;
[0027] The control module is further configured to stop detecting each leakage current sensor in the at least one leakage current sensor when the stop information is received.
[0028] According to some embodiments of the present application, the start module sends the start information to the control module according to the changes of pressure, magnetic field intensity, volume or resistance; and the stop module sends the stop information to the control module according to the changes of pressure, magnetic field intensity, sound or resistance.
[0029] According to some embodiments of the present application, the type of current provided by the current generating module is direct current or alternating current; and whether the current leakage sensor meets the design requirements includes: if the test data meets the first condition, it is determined that the current leakage sensor meets the design requirements; and the first condition includes: when the current provided by the current generating module is direct current, the output current of the current leakage sensor is lower than the first current threshold; and when the current provided by the current generating module is alternating current, the output current of the current leakage sensor is lower than the second current threshold.
[0030] According to some embodiments of the present application, when the current provided by the current generating module is direct current, the intensity range of the direct current is -10mA~10mA;
[0031] When the type of current provided by the current generating module is alternating current, the intensity range of the alternating current is -40mA~40mA.
[0032] The present application has at least the following advantages:
[0033] The testing device for batch detection of leakage current sensors provided by the utility model includes an interface module, a conductor module, a current generation module, a signal processing module, a control module and a prompt module; the interface module is used for electrically coupling with at least one leakage current sensor through a plurality of interface units; the conductor module is used for applying leakage current to the at least one leakage current sensor through a crossbar; the current generation module is used for providing current for the conductor module; the signal processing module is electrically coupled with the plurality of interface units in a switchable manner, is used for receiving the output signal of the current leakage current sensor and determining the detection condition of the leakage current according to the output signal; the control module is used for controlling the type and the current intensity of the current provided by the current generation module, receiving and determining whether the current leakage current sensor meets the design requirement according to the detection condition, and controlling the electrically coupled state of each interface unit and the signal processing module. The utility model realizes batch detection of the leakage current sensor through the synergistic effect of each module, and has the beneficial effects of simple structure and easy realization. BRIEF DESCRIPTION OF DRAWINGS
[0034] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structure shown in these drawings without creative labor.
[0035] Figure 1 It is the structural schematic diagram of the testing device of the first embodiment of the utility model;
[0036] Figure 2 It is the structural schematic diagram of the testing device of the second embodiment of the utility model;
[0037] Figure 3 It is the structural schematic diagram of the testing device of the third embodiment of the utility model;
[0038] Figure 4 It is the structural schematic diagram of the testing device of the fourth embodiment of the utility model.
[0039] Figure 5 It is the structural schematic diagram of the testing device of the fifth embodiment of the utility model.
[0040] EXPLANATION OF DRAWINGS:
[0041] 10, interface module; 11, first interface unit; 12. second interface unit; 13. third interface unit; 14. fourth interface unit; 15. fifth interface unit; 16. sixth interface unit; 17. seventh interface unit; 18. eighth interface unit; 20. conductor module; 21. crossbar; 30. current generation module; 40. signal processing module; 50. control module; 60. prompting module; 70. start module; 80. stop module; A1. first leakage current sensor; A2. second leakage current sensor; A3. third leakage current sensor; A4. fourth leakage current sensor; A5. fifth leakage current sensor; A6. sixth leakage current sensor; A7. seventh leakage current sensor; A8. eighth leakage current sensor.
[0042] The implementation, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION
[0043] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0044] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.
[0045] In addition, if the embodiments of the utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.
[0046] Leakage current sensors need to be tested at the factory or after a period of use to determine whether they meet design requirements.
[0047] Currently, the detection of leakage current sensors usually adopts a one-to-one mode, that is, only one current sensor can be detected at a time. The current sensor is connected to the detection equipment, and the next current sensor is detected after the detection is completed. The efficiency of this detection method is low.
[0048] To solve the problem of low detection efficiency of existing leakage current sensors, the embodiments of the present application provide a test device for batch detection of leakage current sensors.
[0049] As shown in Figure 1 The test device for batch detection of leakage current sensors provided by the first embodiment of the present application comprises an interface module 10, a conductor module 20, a current generation module 30, a signal processing module 40, a control module 50 and a prompt module 60.
[0050] The interface module 10 is used to electrically couple at least one leakage current sensor through a plurality of interface units.
[0051] Specifically, the interface module 10 comprises eight interface units: a first interface unit 11, a second interface unit 12, a third interface unit 13, a fourth interface unit 14, a fifth interface unit 15, a sixth interface unit 16, a seventh interface unit 17 and an eighth interface unit 18. The eight interface units can be electrically coupled with eight leakage current sensors (a first leakage current sensor A1, a second leakage current sensor A2, a third leakage current sensor A3, a fourth leakage current sensor A4, a fifth leakage current sensor A5, a sixth leakage current sensor A6, a seventh leakage current sensor A7 and an eighth leakage current sensor A8). For example, the first interface unit 11 is used to electrically couple with the first leakage current sensor A1; the second interface unit 12 is used to electrically couple with the second leakage current sensor A2; the third interface unit 13 is used to electrically couple with the third leakage current sensor A3; the fourth interface unit 14 is used to electrically couple with the fourth leakage current sensor A4; the fifth interface unit 15 is used to electrically couple with the fifth leakage current sensor A5; the sixth interface unit 16 is used to electrically couple with the sixth leakage current sensor A6; the seventh interface unit 17 is used to electrically couple with the seventh leakage current sensor A7; and the eighth interface unit 18 is used to electrically couple with the eighth leakage current sensor A8.
[0052] It should be noted that the number of interface units in the interface module 10 is not limited to eight, but can be two or more than two, and the specific number is set according to actual needs.
[0053] The conductor module 20 is used to apply leakage current to the at least one leakage current sensor through a crossbar 21, and the crossbar 21 penetrates the at least one leakage current sensor.
[0054] It should be understood that the crossbar 21 of the embodiment is a conductor, which can change the magnetic field environment around the leakage current sensor when having a load current. The leakage current sensor can sense the change of the magnetic field around it in a non-contact manner, and then output an electric signal related to the load current of the crossbar under the influence of the load current of the crossbar.
[0055] The interface units in the interface module 10 can be located directly below the crossbar 21. The leakage current sensor penetrates through the crossbar 21, and its bottom abuts against the interface units.
[0056] It should be noted that the position where the leakage current sensor abuts against the interface units is not limited to the bottom, but can be the lateral position below the leakage current sensor, which is not specifically limited here.
[0057] The current generating module 30 is configured to provide a current for the conductor module 20.
[0058] The current generating module 30 of the embodiment can generate a direct current of -10 mA to 10 mA, and transmit the generated direct current to the crossbar, so that the crossbar has a certain direct current.
[0059] The current generating module 30 of the embodiment can also generate an alternating current of -40 mA to 40 mA, and transmit the generated alternating current to the crossbar, so that the crossbar has a certain alternating current.
[0060] It should be understood that the current generating module can provide a current for the conductor module in the following manner: generating a required current acting on the first resistor through analog signal processing, and transmitting the current to the crossbar through a first resistor coupled with the crossbar. The manner of providing the current can also be other manners.
[0061] The signal processing module 40 is switchably electrically coupled with the plurality of interface units, configured to receive an output signal of a current leakage current sensor corresponding to a current interface unit electrically coupled with the signal processing module 40, and determine the detection condition of the current leakage current sensor on the leakage current according to the output signal.
[0062] The signal processing module 40 of the embodiment can be switchably electrically coupled with each interface unit, can receive an output signal of a current leakage current sensor coupled with an interface unit when electrically coupled with the interface unit, and can process the output signal accordingly.
[0063] It should be understood that, in order to more accurately test the leakage current sensor, the signal processing module 40 should only process the output signal of one leakage current sensor at the same time, that is, when the signal processing module 40 is electrically coupled with an interface unit, the signal processing module 40 is in a non-electrically coupled state with the remaining interface units.
[0064] To avoid the process of current generation module 30 generating current affecting the signal processing process of signal processing module 40, the signal processing module of the embodiment includes an isolation chip, such as ADUM120ARZ, which can isolate the output signal of the leakage current sensor and convert the output signal into a level signal. Further, the signal processing module is used to receive the output signal of the current leakage current sensor corresponding to the current interface electrically coupled to the signal processing module, convert the output signal into a level signal through the isolation chip, and determine the detection condition of the current leakage current sensor to the leakage current according to the level signal.
[0065] The control module 50 is electrically coupled to the interface module 10, the signal processing module 40, and the current generation module 30. The role of the control module 50 in the batch detection of the leakage current sensor mainly includes the following aspects.
[0066] Firstly, the control module 50 is used to control the type and intensity of the current provided by the current generation module 30.
[0067] Specifically, the control module 50 of the embodiment can control the current generation module 30 to generate an alternating current of a first intensity within a certain time range to monitor the detection condition of the current leakage current sensor under alternating leakage current; the control module 50 can also control the current generation module 30 to generate a direct current of a second intensity within a certain time to detect the detection condition of the current leakage current sensor under direct leakage current.
[0068] The control module 50 can also control the current generation module to generate an alternating current of a third intensity that is gradually changed from the first intensity within a certain time range to detect the detection condition of the current leakage current sensor under a certain range of alternating leakage current; the control module 50 of the embodiment can also control the current generation module to generate a direct current of a fourth intensity that is gradually changed from the second intensity within a certain time range to detect the detection condition of the current leakage current sensor under a certain range of direct leakage current.
[0069] The way the control module 50 of the embodiment controls the type and intensity of the current generated by the current generation module 30 can be from direct current-10mA to direct current 10mA, and then from alternating current-40mA to alternating current 40mA. The way can also be other ways, which are not limited here.
[0070] Secondly, the control module 50 can also be used to receive and determine whether the current leakage current sensor meets the design requirements according to the detection condition of the current leakage current sensor to the leakage current.
[0071] The control module 50, after receiving the detection condition, first determines whether the test data meets the first condition. The first condition includes: (1) when the current provided by the current generating module is direct current, the output current of the current leakage sensor is lower than the first current threshold; (2) when the current provided by the current generating module is alternating current, the output current of the current leakage sensor is lower than the second current threshold. If the test data meets the first condition, it is determined that the current leakage sensor meets the design requirements.
[0072] It should be noted that whether the current leakage sensor meets the design requirements can also include other factors, such as whether the self-calibration function is intact, whether it has the one-key factory setting recovery function, etc., which are not specifically limited here.
[0073] In a third aspect, the control module 50 can also be used to control the electrical coupling state of each interface unit and the signal processing module 40 to sequentially detect each current leakage sensor.
[0074] Specifically, the interface module further includes 8 relay units, which are located between each interface unit and the signal processing module; the control module 50 controls the electrical coupling relationship of each interface unit and the signal processing module through the relay unit.
[0075] The control module 50 can be used to sequentially execute the detection of the first current leakage sensor A1, the second current leakage sensor A2, the third current leakage sensor A3, the fourth current leakage sensor A4, the fifth current leakage sensor A5, the sixth current leakage sensor A6, the seventh current leakage sensor A7, and the eighth current leakage sensor A8 in sequence according to the order of the interface unit.
[0076] Specifically, the control module 50 first controls the signal processing module 40 to be electrically coupled with the first interface unit 11 to detect the first leakage current sensor Al; controls the signal processing module 40 to be electrically coupled with the second interface unit 12 to detect the second leakage current sensor A2 after obtaining the detection result of the first leakage current sensor Al; controls the signal processing module 40 to be electrically coupled with the third interface unit 13 to detect the third leakage current sensor A3 after obtaining the detection result of the second leakage current sensor A2; controls the signal processing module 40 to be electrically coupled with the fourth interface unit 14 to detect the fourth leakage current sensor A4 after obtaining the detection result of the third leakage current sensor A3; controls the signal processing module 40 to be electrically coupled with the fifth interface unit 15 to detect the fifth leakage current sensor A5 after obtaining the detection result of the fourth leakage current sensor A4; controls the signal processing module 40 to be electrically coupled with the sixth interface unit 16 to detect the sixth leakage current sensor A6 after obtaining the detection result of the fifth leakage current sensor A5; controls the signal processing module 40 to be electrically coupled with the seventh interface unit 17 to detect the seventh leakage current sensor A7 after obtaining the detection result of the sixth leakage current sensor A6; controls the signal processing module 40 to be electrically coupled with the eighth interface unit 18 to detect the eighth leakage current sensor A8 after obtaining the detection result of the seventh leakage current sensor A7; and exits the electrical coupling between the signal processing module 40 and each interface unit after obtaining the detection result of the eighth leakage current sensor A8.
[0077] The control module 50 can also be used to determine the interface unit information to be tested according to the electrical coupling state of each interface unit and the leakage current sensor. For example, if the first leakage current sensor Al and the fifth leakage current sensor A5 are not electrically coupled with the corresponding first interface unit 11 and fifth interface unit 15, the interface unit information to be tested is: the second interface unit 12, the third interface unit 13, the fourth interface unit 14, the sixth interface unit 16, the seventh interface unit 17, and the eighth interface unit 18.
[0078] The control module 50 is also used to determine the detection order of the specified leakage current sensor. For example, if a serial port instruction is sent by a computer to require detection of only the second leakage current sensor and the eighth leakage current sensor, the second leakage current sensor and the eighth leakage current sensor are sequentially executed.
[0079] It should be noted that the control module 50 can determine the detection order by sequentially detecting the leakage current sensors of each interface unit, by specifying the detection of the leakage current sensor coupled to a specific interface unit, by only detecting the leakage current sensor corresponding to the interface unit in the electrically coupled state according to the electrical coupling state of the current interface unit and the leakage current sensor, or by other orders to test the leakage current sensor. The detection order can also be in other ways, which are not specifically limited here.
[0080] In the fourth aspect, the control module 50 is further configured to control the signal processing module 40 to be electrically coupled with the first interface unit in the interface unit information to be tested, and to disconnect the signal processing module 40 from the first interface unit after determining the detection result of the first leakage current sensor corresponding to the first interface unit, and to control the signal processing module 40 to be electrically coupled with the second interface unit in the interface unit information to be tested.
[0081] Specifically, when the interface unit information to be tested is the second interface unit 12, the third interface unit 13, the fourth interface unit 14, the sixth interface unit 16, the seventh interface unit 17 and the eighth interface unit 18, the control module 50 should perform the following operations:
[0082] (1) controlling the signal processing module to be electrically coupled with the second interface unit, and disconnecting the signal processing module from the second interface unit after determining the detection result of the second leakage current sensor corresponding to the second interface unit;
[0083] (2) controlling the signal processing module to be electrically coupled with the third interface unit, and disconnecting the signal processing module from the third interface unit after determining the detection result of the third leakage current sensor corresponding to the third interface unit;
[0084] (3) controlling the signal processing module to be electrically coupled with the fourth interface unit, and disconnecting the signal processing module from the fourth interface unit after determining the detection result of the fourth leakage current sensor corresponding to the fourth interface unit;
[0085] (4) controlling the signal processing module to be electrically coupled with the sixth interface unit, and disconnecting the signal processing module from the sixth interface unit after determining the detection result of the sixth leakage current sensor corresponding to the sixth interface unit;
[0086] (5) controlling the signal processing module to be electrically coupled with the seventh interface unit, and disconnecting the signal processing module from the seventh interface unit after determining the detection result of the seventh leakage current sensor corresponding to the seventh interface unit;
[0087] (6) controlling the signal processing module to be electrically coupled with the eighth interface unit, and disconnecting the signal processing module from the eighth interface unit after determining the detection result of the eighth leakage current sensor corresponding to the eighth interface unit.
[0088] In the fifth aspect, the control module 50 is further configured to execute the instructions sent by the computer, such as the start instruction to sequentially detect the leakage current sensors and feed back the detection results, the stop instruction to stop detecting the leakage current sensors, or other instructions.
[0089] The prompt module 60 is configured to feed back the detection result of the at least one leakage current sensor.
[0090] The prompting module 60 of the embodiment prompts the detection results of each leakage current sensor through a display screen.
[0091] It should be noted that the prompting module 60 can adopt light prompting, visual prompting, text prompting or other prompting modes, which are not specifically limited here.
[0092] In summary, the test device provided in the first embodiment of the utility model can test eight leakage current sensors at one time, and realizes batch detection of the leakage current sensors. In addition, the test device provided by the utility model has the beneficial effects of simple structure and easy implementation.
[0093] As shown in Figure 2 The test device for batch detecting leakage current sensors provided by the second embodiment of the utility model comprises an interface module 10, a conductor module 20, a current generation module 30, a signal processing module 40, a control module 50, a prompting module 60, a start module 70 and a stop module 80. The test device of the embodiment adds the start module 70 and the stop module 80.
[0094] The start module can be a button, and the pressure change generated by pressing sends start information to the control module 50. The control module 50 is electrically coupled with the start module, and starts batch detection of the leakage current sensor when receiving the start information.
[0095] It should be noted that the start module can send start information to the control module 50 according to the change of pressure, the change of magnetic field intensity, the change of volume, the change of resistance, the change of capacitance, the change of current or the change of other physical variables.
[0096] The stop module can be a button, and the pressure change generated by pressing sends stop information to the control module 50. The control module 50 is electrically coupled with the stop module, and can stop batch detection of the leakage current sensor when receiving the stop information.
[0097] It should be noted that the stop module can send start information to the control module 50 according to the change of pressure, the change of magnetic field intensity, the change of volume, the change of resistance, the change of capacitance, the change of current or the change of other physical variables.
[0098] As shown in Figure 3As shown, the test device for batch detecting leakage current sensor provided by the third embodiment of the utility model includes interface module 10, conductor module 20, current generation module 30, signal processing module 40, control module 50, prompting module 60, start module 70, stop module 80. Compared with the test device of the second embodiment, the prompting module of the test device of the embodiment includes eight prompting units: first prompting unit 61, second prompting unit 62, third prompting unit 63, fourth prompting unit 64, fifth prompting unit 65, sixth prompting unit 66, seventh prompting unit 67, eighth prompting unit 68. Among them, the first prompting unit is used to feed back the detection result of the leakage current sensor corresponding to the first interface unit 11; the second prompting unit is used to feed back the detection result of the leakage current sensor corresponding to the second interface unit; the third prompting unit is used to feed back the detection result of the leakage current sensor corresponding to the third interface unit; the fourth prompting unit is used to feed back the detection result of the leakage current sensor corresponding to the fourth interface unit; the fifth prompting unit is used to feed back the detection result of the leakage current sensor corresponding to the fifth interface unit; the sixth prompting unit is used to feed back the detection result of the leakage current sensor corresponding to the sixth interface unit; the seventh prompting unit is used to feed back the detection result of the leakage current sensor corresponding to the seventh interface unit; the eighth prompting unit is used to feed back the detection result of the leakage current sensor corresponding to the eighth interface unit.
[0099] Therefore, the control module 50 of the embodiment can determine the current prompting unit corresponding to the current leakage current sensor according to the current interface unit of the current leakage current sensor and the corresponding relationship between the interface unit and the prompting unit, and send the detection result to the current prompting unit after determining the detection result of the current leakage current sensor.
[0100] Specifically, assuming that the current leakage current sensor is the fourth leakage current sensor A4, the current interface unit of the fourth leakage current sensor A4 is the fourth interface unit 14, and the current prompting unit corresponding to the fourth interface unit 14 is the fourth prompting unit 64, then after determining the current leakage current sensor, the control module 50 can send the detection result to the fourth prompting unit 64, and provide detection result feedback information by the fourth prompting unit.
[0101] The control module 50 can adopt the following way when sending the detection result feedback information: before the detection starts, the control module 50 controls the prompting unit to be off; during the detection, the control module 50 controls the prompting unit to be yellow; when the detection result is qualified, the control module 50 controls the prompting unit to be green; when the detection result is unqualified, the control module 50 controls the prompting unit to be red. Further, the detector can judge the detection result of a leakage current sensor according to the light color of the corresponding prompting unit.
[0102] It should be noted that the prompt unit has a first prompt state and a second prompt state, and the prompt unit is in the first prompt state when the leakage current sensor corresponding to the prompt unit meets the design requirements; the prompt unit is in the second prompt state when the leakage current sensor corresponding to the prompt unit does not meet the design requirements. The first prompt state or the second prompt state can be a prompt mode easy to find, such as sound, text, light, vision, or other prompt modes, which are not limited here.
[0103] As shown in Figure 4 The test device for batch detecting leakage current sensors provided by the fourth embodiment of the utility model comprises an interface module 10, a conductor module 20, a current generating module 30, a signal processing module 40, a control module 50, a prompt module 60, a start module 70 and a stop module 80. Compared with the test device of the second embodiment, the interface module of the test device of the present embodiment only comprises five interface units.
[0104] Therefore, the utility model can realize batch detection of five leakage current sensors at the same time.
[0105] As shown in Figure 5 The test device for batch detecting leakage current sensors provided by the fifth embodiment of the utility model comprises an interface module 10, a conductor module 20, a current generating module 30, a signal processing module 40, a control module 50, a prompt module 60, a start module 70 and a stop module 80. Compared with the test device of the third embodiment, the interface module of the test device of the present embodiment only comprises five interface units, and the prompt module comprises only five prompt units.
[0106] Specifically, the interface module 10 comprises a first interface unit 11, a second interface unit 12, a third interface unit 13, a fourth interface unit 14 and a fifth interface unit 15; the prompt module 60 comprises a first prompt unit 61, a second prompt unit 62, a third prompt unit 63, a fourth prompt unit 64 and a fifth prompt unit 65. Among them, the first prompt unit 61 is used for feeding back the detection result of the leakage current sensor coupled with the first interface unit 11, the second prompt unit 62 is used for feeding back the detection result of the leakage current sensor coupled with the second interface unit 12, the third prompt unit 63 is used for feeding back the detection result of the leakage current sensor coupled with the third interface unit 13, the fourth prompt unit 64 is used for feeding back the detection result of the leakage current sensor coupled with the fourth interface unit 14, and the fifth prompt unit 65 is used for feeding back the detection result of the leakage current sensor coupled with the fourth interface unit 14.
[0107] Therefore, the utility model can realize batch detection of five leakage current sensors at the same time, and can provide prompt information for each leakage current sensor through a separate prompt unit.
[0108] The above merely illustrates the exemplary embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields under the technical concept of the present application and by using the content of the present application specification and drawings are included in the patent protection scope of the present application.
Claims
1. A testing apparatus for batch testing of leakage current sensors, characterized in that, include: An interface module, comprising multiple interface units, is used for electrical coupling with at least one leakage current sensor. A conductor module for applying leakage current to the at least one leakage current sensor via a crossbar that passes through the at least one leakage current sensor; A current generating module, which is electrically coupled to the conductor module, is used to provide current to the conductor module; A signal processing module, which is switchably electrically coupled to the plurality of interface units, is used to receive the output signal of the current leakage current sensor corresponding to the current interface unit electrically coupled to the signal processing module, and to determine the detection status of the current leakage current sensor on the leakage current based on the output signal. The control module is electrically coupled to the interface module, the current generation module and the signal processing module respectively. It is used to control the type and intensity of the current provided by the current generation module, and to receive and determine whether the current leakage current sensor meets the design requirements based on the detection status of the current leakage current sensor. It is also used to control the electrical coupling state between each interface unit in the plurality of interface units and the signal processing module so as to sequentially detect each leakage current sensor in the at least one leakage current sensor. The prompting module, which is electrically coupled to the control module, is used to provide feedback on the detection results of the at least one leakage current sensor.
2. The testing apparatus according to claim 1, characterized in that, The signal processing module includes an isolation chip; The signal processing module is used to receive the output signal of the current leakage current sensor corresponding to the current interface unit electrically coupled to the signal processing module, convert the output signal into a level signal through the isolation chip, and determine the detection status of the current leakage current sensor on the leakage current based on the level signal.
3. The testing apparatus according to claim 1, characterized in that, When the signal processing module is electrically coupled to one of the plurality of interface units, the signal processing module is in a non-electrically coupled state to the remaining interface units.
4. The testing apparatus according to claim 1, characterized in that, The control module is also used to determine the interface unit information to be tested corresponding to the at least one leakage current sensor based on the electrical coupling state between the plurality of interface units and the at least one leakage current sensor. The control module is also used to control the electrical coupling between the signal processing module and the first interface unit in the interface unit information to be tested, and to disconnect the electrical coupling between the signal processing module and the first interface unit after determining the detection result of the first leakage current sensor corresponding to the first interface unit, and to control the electrical coupling between the signal processing module and the second interface unit in the interface unit information to be tested.
5. The testing apparatus according to claim 1, characterized in that, The prompting module includes multiple prompting units, and the multiple prompting units are electrically coupled to the control module respectively. The control module is further configured to determine the current prompting unit corresponding to the current leakage current sensor based on the current interface unit of the current leakage current sensor and the correspondence between the interface unit and the prompting unit, and send the detection result to the current prompting unit after determining the detection result of the current leakage current sensor.
6. The testing apparatus according to claim 5, characterized in that, The prompting unit has a first prompting state and a second prompting state; When the leakage current sensor corresponding to the prompting unit meets the design requirements, the prompting unit is in the first prompting state; When the leakage current sensor corresponding to the prompting unit does not meet the design requirements, the prompting unit will display the second prompting state.
7. The testing apparatus according to claim 1, characterized in that, It also includes a start module and / or a stop module; The start module is used to send start information to the control module; The control module is also configured to, upon receiving the start information, sequentially detect each leakage current sensor among the at least one leakage current sensor and return the detection results. The stop module is used to send stop information to the control module; The control module is also used to stop detecting each leakage current sensor among the at least one leakage current sensor when the stop information is received.
8. The testing apparatus according to claim 7, characterized in that, The start module sends the start information to the control module based on changes in pressure, magnetic field strength, volume, or resistance. The stop module sends the stop information to the control module based on changes in pressure, magnetic field strength, sound, or resistance.
9. The testing apparatus according to claim 1, characterized in that, The current generated by the current generation module is either direct current or alternating current. Whether the current leakage current sensor meets the design requirements includes: If the test data meets the first condition, then the current leakage current sensor is determined to meet the design requirements; the first condition includes: When the current generated by the current generation module is a DC current, the output current of the current leakage current sensor is lower than the first current threshold; and when the current generated by the current generation module is an AC current, the output current of the current leakage current sensor is lower than the second current threshold.
10. The testing apparatus according to claim 9, characterized in that, When the current provided by the current generating module is a direct current, the intensity range of the direct current is -10mA to 10mA; When the current generated by the current generation module is AC current, the intensity range of the AC current is -40mA to 40mA.