CN220773182U - Heavy current injection testing device - Google Patents
Heavy current injection testing device Download PDFInfo
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- CN220773182U CN220773182U CN202321835895.1U CN202321835895U CN220773182U CN 220773182 U CN220773182 U CN 220773182U CN 202321835895 U CN202321835895 U CN 202321835895U CN 220773182 U CN220773182 U CN 220773182U
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- 238000012360 testing method Methods 0.000 title claims abstract description 153
- 238000002347 injection Methods 0.000 title claims abstract description 105
- 239000007924 injection Substances 0.000 title claims abstract description 105
- 230000007246 mechanism Effects 0.000 claims abstract description 94
- 238000012544 monitoring process Methods 0.000 claims abstract description 82
- 230000002159 abnormal effect Effects 0.000 claims abstract description 21
- 239000000523 sample Substances 0.000 claims description 42
- 230000008878 coupling Effects 0.000 claims description 25
- 238000010168 coupling process Methods 0.000 claims description 25
- 238000005859 coupling reaction Methods 0.000 claims description 25
- 238000012806 monitoring device Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
The application discloses a heavy current injection testing device, which comprises a power supply mechanism, an anti-interference mechanism, an interference mechanism and a monitoring mechanism, wherein the anti-interference mechanism is coupled with the power supply mechanism, and the anti-interference mechanism is coupled with equipment to be tested through a wire harness; the interference mechanism is coupled to the wire harness and used for generating radio frequency interference signals and injecting the radio frequency interference signals into the wire harness; the monitoring mechanism comprises a first monitoring sub-mechanism and a second monitoring sub-mechanism, wherein the first monitoring sub-mechanism is coupled with the equipment to be monitored, and the second monitoring sub-mechanism is coupled to the wire harness and is used for monitoring current information of the wire harness. By the aid of the scheme, the efficiency of detecting the abnormal part of the equipment to be detected can be improved.
Description
Technical Field
The application relates to the technical field of electromagnetic compatibility testing devices, in particular to a high-current injection testing device.
Background
An existing method for electromagnetic compatibility (Electro Magnetic Compatibility, EMC) testing is the high current injection (Bulk Current Injection, BCI) method. The large current injection method is suitable for the disturbance rejection test of electric and electronic components on continuous narrow-band radiation electric disturbance, and the disturbance rejection test is carried out by changing the severity level of the test and the frequency of the induced disturbance.
At present, a large current injection testing device mainly observes the operation process of tested equipment in the testing device, and under the scene that the tested equipment is abnormal in operation, a source device which is abnormal is determined only through multiple experiments set by the operation condition of the tested equipment, so that the efficiency of detecting the abnormal part of the tested equipment is low. In view of this, how to improve the efficiency of detecting abnormal parts of the device under test is a problem to be solved.
Disclosure of Invention
The technical problem that this application mainly solves is to provide a heavy current injection testing arrangement, can help improving the efficiency that waits to survey the unusual position of equipment and detect.
In order to solve the above problems, a first aspect of the present application provides a high-current injection testing device, which includes a power mechanism, an anti-interference mechanism, an interference mechanism and a monitoring mechanism, wherein the anti-interference mechanism is coupled with the power mechanism, and the anti-interference mechanism is coupled with a device to be tested through a wire harness; the interference mechanism is coupled to the wire harness and used for generating radio frequency interference signals and injecting the radio frequency interference signals into the wire harness; the monitoring mechanism comprises a first monitoring sub-mechanism and a second monitoring sub-mechanism, wherein the first monitoring sub-mechanism is coupled with the equipment to be monitored, and the second monitoring sub-mechanism is coupled to the wire harness and is used for monitoring current information of the wire harness.
Therefore, the equipment to be tested is coupled to one end of the wire harness, the interference mechanism is coupled to the wire harness and generates radio frequency interference signals to be injected into the wire harness so as to realize interference testing of the equipment to be tested, the power supply mechanism is used for supplying power to the high-current injection testing device, the anti-interference mechanism is coupled between the power supply mechanism and the wire harness, the influence of the radio frequency interference signals on the power supply mechanism is reduced as much as possible, the monitoring device in the high-current injection testing device comprises a first monitoring sub-mechanism and a second monitoring sub-mechanism, the first monitoring sub-mechanism is coupled with the equipment to be tested, so that the operation condition of the equipment to be tested is helped to be monitored through the first monitoring sub-mechanism, the second monitoring sub-mechanism is coupled with the wire harness and is used for monitoring the current information of the wire harness, namely, the high-current injection testing device can monitor the operation condition of the equipment to be tested and the current information of the wire harness at the same time, and the high-current injection testing device can provide abundant auxiliary information for the application requirements such as source devices and the like for subsequently positioning the equipment to be tested to be abnormal. Therefore, the method can help to improve the efficiency of detecting the abnormal part of the equipment to be tested.
The high-current injection testing device further comprises a load mechanism matched with the device to be tested, and the load mechanism is coupled between the anti-interference mechanism and the wire harness.
Therefore, the load mechanism matched with the equipment to be tested is coupled between the anti-interference mechanism and the wire harness, and the equipment to be tested drives the load mechanism to work through the wire harness, so that interference test on the equipment to be tested is realized.
The second monitoring sub-mechanism comprises a monitoring probe and current monitoring equipment, one end of the monitoring probe is connected with the wire harness to access coupling current, and the current monitoring equipment is electrically connected with the other end of the monitoring probe to detect current information.
Therefore, the second monitoring sub-mechanism comprises a monitoring probe and current monitoring equipment, one end of the monitoring probe is connected with the wire harness and used for accessing the coupling current in the wire harness, the other end of the monitoring probe is electrically connected with the current monitoring equipment and used for detecting the current information of the coupling current in the wire harness, and the second monitoring sub-mechanism can provide as rich auxiliary information as possible for the application requirements of subsequently positioning source devices and the like of the equipment to be detected, so that the efficiency of detecting the abnormal parts of the equipment to be detected can be improved.
The second monitoring sub-mechanism further comprises a display circuit, and the display circuit is electrically connected with the current detection device to display current information.
Therefore, the display circuit in the second monitoring sub-mechanism is electrically connected with the current monitoring equipment and is used for displaying the current information detected by the current monitoring equipment, so that the convenience of using the large-current injection testing device by a user is improved.
The high-current injection testing device further comprises a testing mechanism, wherein the testing mechanism is electrically connected with the output end of the first monitoring sub-mechanism and the output end of the second monitoring sub-mechanism respectively so as to determine source components of abnormal positions of equipment to be tested.
Therefore, the input end of the testing mechanism is respectively connected with the output end of the first monitoring sub-mechanism and the output end of the second monitoring sub-mechanism, and the testing mechanism can monitor the running condition of the equipment to be tested and the current information of the wire harness at the same time, so that the large-current injection testing device can provide as rich auxiliary information as possible for the application requirements of subsequently positioning source devices and the like of the equipment to be tested, and is beneficial to improving the efficiency of detecting the abnormal parts of the equipment to be tested.
The interference mechanism comprises an injection probe and a signal generator, one end of the injection probe is electrically connected with the output end of the signal generator, and the other end of the injection probe is coupled to the wire harness so as to inject radio-frequency interference signals into the wire harness.
Therefore, the interference mechanism comprises an injection probe and a signal generator, the signal generator is used for generating a radio frequency interference signal, the output end of the signal generator is electrically connected with one end of the injection probe and used for transmitting the radio frequency interference signal to the injection probe, the other end of the injection probe is coupled to the wire harness and used for injecting the radio frequency interference signal into the wire harness, and interference testing of equipment to be tested is achieved.
The injection probe comprises a coupling clamp which is clamped on the wire harness and is electrically connected with the wire harness.
Therefore, the coupling pliers are clamped on the wire harness and are electrically connected with the wire harness, and are used for injecting radio frequency interference signals into the wire harness to realize interference test on equipment to be tested.
The interference mechanism further comprises a power amplifier, the input end of the power amplifier is electrically connected with the signal generator, and the output end of the power amplifier is electrically connected with the injection probe.
Therefore, the interference mechanism further comprises a power amplifier, the input end of the power amplifier is electrically connected with the signal generator and used for processing an interference signal generated by the signal generator into a radio frequency interference signal required by the large-current injection testing device, and the output end of the power amplifier is electrically connected with the injection probe and used for transmitting the radio frequency interference signal to the injection probe so as to realize interference testing of equipment to be tested.
The anti-interference mechanism is an artificial power supply network, the artificial power supply network comprises a first port, a second port and a third port, the first port is grounded, the second port is respectively electrically connected with the positive pole and the negative pole of the power supply mechanism, and the third port is coupled to the wire harness so as to provide impedance to the power supply mechanism.
Therefore, the anti-interference mechanism is an artificial power supply network, a first port of the artificial power supply network is grounded, a second port of the artificial power supply network is respectively and electrically connected with the positive electrode and the negative electrode of the power supply mechanism, a third port of the artificial power supply network is coupled to the wiring harness, stable impedance is provided for the power supply mechanism, interference of radio frequency interference signals on the power supply mechanism is reduced as much as possible, and the accuracy of testing equipment to be tested by the high-current injection testing device is improved.
The high-current injection testing device further comprises an insulating support piece, and at least equipment to be tested is borne on the insulating support piece.
Therefore, the high-current injection testing device further comprises an insulating supporting piece, at least the equipment to be tested is borne on the insulating supporting piece, the influence of external factors on the equipment to be tested is reduced as much as possible, and the accuracy of the high-current injection testing device in testing the equipment to be tested is improved.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a high current injection test apparatus according to the present application;
FIG. 2 is a schematic diagram of an embodiment of a current direction of a device under test of the heavy current injection test apparatus of the present application.
Detailed Description
The following describes the embodiments of the present application in detail with reference to the drawings.
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, interfaces, techniques, etc., in order to provide a thorough understanding of the present application.
The terms "system" and "network" are often used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship. Further, "a plurality" herein means two or more than two.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a high-current injection testing device 10 according to the present application. The heavy current injection testing device 10 includes a power supply mechanism 20, an anti-interference mechanism 30, an interference mechanism 40 and a monitoring mechanism 50, where the monitoring mechanism 50 includes a first monitoring sub-mechanism 51 and a second monitoring sub-mechanism 52, so that the operation condition of the device 11 to be tested is monitored by the first monitoring sub-mechanism 51, and the second monitoring sub-mechanism 52 is coupled with the wire harness 100 and is used for monitoring the current information of the wire harness 100, i.e. the heavy current injection testing device 10 can monitor the operation condition of the device 11 to be tested and the current information of the wire harness 100 at the same time, so that the heavy current injection testing device 10 can provide as rich auxiliary information as possible for the application requirements of subsequently positioning source devices and the like where the device 11 to be tested is abnormal. Therefore, the efficiency of detecting the abnormal portion of the device under test 11 can be improved.
In the embodiment of the disclosure, the heavy current injection Test device 10 is based on a heavy current injection method (BCI, bulk current injection), belongs to an EMC (electromagnetic compatibility, EMC Test) Test, and is an electromagnetic radiation immunity limit value and a measurement method of an electronic and electric component of a motor vehicle. The automotive electronics need to meet the requirements of the relevant electromagnetic compatibility regulations and meet the standard grade requirements of ISO 11452-4. The high-current injection method is a method suitable for an anti-interference test of electronic components on external continuous narrow-band radiation electric disturbance, and is a method for directly sensing disturbance signals on the wire harness 100 by using a current probe to perform an anti-interference test, wherein the wire harness 100 of a tested device passes through the method, and the anti-interference test is performed by changing the severity level of the test and the frequency of sensing disturbance. The current injected into the harness 100 is commonly affected by a variety of factors such as the manner in which the harness 100 is bundled, the harness impedance, the distance from the ground plane, the injection frequency, etc.
In one implementation scenario, the device under test 11 is coupled to one end of the wire harness 100, the interference mechanism 40 is coupled to the wire harness 100, and generates a radio frequency interference signal to be injected into the wire harness 100, so as to implement interference test on the device under test 11, the power supply mechanism 20 is used for supplying power to the high current injection testing device 10, the anti-interference mechanism 30 is coupled between the power supply mechanism 20 and the wire harness 100, the influence of the radio frequency interference signal on the power supply mechanism 20 is reduced as much as possible, the monitoring device in the high current injection testing device 10 includes a first monitoring sub-mechanism 51 and a second monitoring sub-mechanism 52, the first monitoring sub-mechanism 51 is coupled with the device under test 11, so that the first monitoring sub-mechanism 51 is used for helping to monitor the operation condition of the device under test 11, and the second monitoring sub-mechanism 52 is coupled with the wire harness 100, so that the high current injection testing device 10 can monitor the operation condition of the device under test 11 and the current information of the wire harness 100 at the same time, and the high current injection testing device 10 can provide as abundant auxiliary information for the application requirements of subsequently locating the device under test 11 with abnormal source. Therefore, the efficiency of detecting the abnormal portion of the device under test 11 can be improved.
The number of the wire harnesses 100 is matched to the device under test 11, and the number and length of the wire harnesses 100 in the high-current injection test device 10 are not limited in this application.
In one particular implementation, power mechanism 20 is a regulated power supply capable of providing a regulated alternating or direct current to high current injection test apparatus 10.
In one implementation scenario, the heavy current injection testing apparatus 10 further includes a load mechanism 60 matched with the device under test 11, where the load mechanism 60 matched with the device under test 11 is coupled between the anti-interference mechanism 30 and the wire harness 100, and the device under test 11 drives the load mechanism 60 to work via the wire harness 100, so as to implement interference testing on the device under test 11.
In a specific implementation scenario, the load mechanism 60 is an analog load, and the analog load with the same function is selected based on the load required in the actual application of the device under test 11, and is connected to the high-current injection testing device 10, so as to improve the flexibility of the high-current injection testing device 10. For example, a virtual load matched with the device under test 11 is generated by the electronic device as the load mechanism 60 of the large current injection test apparatus 10, and when different types of devices under test 11 are tested, the electronic device correspondingly switches the virtual load, improving the flexibility of the large current injection test apparatus 10.
In one implementation scenario, the second monitoring sub-mechanism 52 includes a monitoring probe 521 and a current monitoring device 522, where one end of the monitoring probe 521 is connected with the wire harness 100 and is used for accessing the coupling current in the wire harness 100, and the other end of the monitoring probe 521 is electrically connected with the current monitoring device 522 and is used for detecting the current information of the coupling current in the wire harness 100, so as to provide as abundant auxiliary information as possible for subsequently positioning the source device of the abnormality of the device 11 to be detected and so on, and improve the efficiency of detecting the abnormal part of the device 11 to be detected.
Referring to fig. 2, fig. 2 is a schematic structural diagram of an embodiment of a current direction of a device under test 11 of the heavy current injection test apparatus 10 according to the present application. In a specific implementation scenario, the current information detected by the current monitoring device 522 includes a current magnitude and a current direction of the coupling current, and a current path of the coupling current can be obtained according to the current magnitude and the current direction, for example, the coupling current is generated by injecting a radio frequency interference signal into the wire harness 100, the current direction is that the wire harness N flows to the wire harness M, the current coupling of the radio frequency interference signal between the wire harness N and the wire harness M is determined according to the current magnitude, and the current coupling path is determined. Therefore, the method can provide as rich auxiliary information as possible for the application requirements of subsequently positioning source devices and the like of the equipment 11 to be detected, which are abnormal, and improve the efficiency of detecting the abnormal parts of the equipment 11 to be detected.
In one implementation scenario, the second monitoring sub-mechanism 52 further includes a display circuit 523, where the display circuit 523 in the second monitoring sub-mechanism 52 is electrically connected to the current monitoring device 522, and is configured to display current information detected by the current monitoring device 522, such as a current magnitude, a current direction, and a current coupling path, so as to improve convenience of using the large current injection test apparatus 10 by a user.
In a specific implementation scenario, the output terminal of the display circuit 523 is electrically connected to a display device, specifically, a CRT (Cathode Ray Tube) display, an LCD display, an IPS screen, or the like, for displaying the current information.
In one implementation scenario, the heavy current injection testing apparatus 10 further includes a testing mechanism 70, where an input end of the testing mechanism 70 is electrically connected to an output end of the first monitoring sub-mechanism 51 and an output end of the second monitoring sub-mechanism 52, and the testing mechanism 70 can monitor the operation condition of the device under test 11 and the current information of the wire harness 100 at the same time, so that as rich auxiliary information as possible can be provided for subsequently locating the source device with abnormality of the device under test 11. Therefore, the efficiency of detecting the abnormal portion of the device under test 11 can be improved.
In a specific implementation scenario, according to the output results of the first monitoring sub-mechanism 51 and the second monitoring sub-mechanism 52, an abnormal portion of the device under test 11 and a current coupling path are determined, and a filter is added to the coupling path of the corresponding sensitive device, so that the stability of the operation of the device under test 11 in the heavy current injection testing device 10 is improved.
In one implementation scenario, the interference mechanism 40 includes an injection probe 41 and a signal generator 42, where the signal generator 42 is configured to generate a radio frequency interference signal, an output end of the signal generator 42 is electrically connected to one end of the injection probe 41, and is configured to transmit the radio frequency interference signal to the injection probe 41, and the other end of the injection probe 41 is coupled to the wire harness 100, and is configured to inject the radio frequency interference signal into the wire harness 100, so as to implement an interference test on the device under test 11.
In one specific implementation, the injection probe 41 is a high current injection probe (Large Current Injection Probe), which is a testing device commonly used in electromagnetic experiments. The basic principle is that electromagnetic induction action caused by electromagnetic wave is detected by using a large current through a conductor. The high current injection probe can generate a strong electromagnetic field by injecting a large current and evaluate electromagnetic parameters in a specific area by detecting this field. It is generally used for detecting electromagnetic shielding effect, magnetic source positioning, electromagnetic interference source searching, electromagnetic induction testing and the like. Compared with other electromagnetic testing methods, the high-current injection probe has very high testing efficiency and sensitivity, and the testing result is easy to process and analyze.
In a specific implementation scenario, the injection probe 41 includes a coupling clamp, which is a clamp type injection device with a high efficiency and wide bandwidth, and the coupling clamp is clamped on the wire harness 100 and electrically connected to the wire harness 100, and is used for injecting a radio frequency interference signal into the wire harness 100 to implement an interference test on the device under test 11.
In a specific implementation scenario, the high-current injection test device 10 further includes a ground plate (not shown), and after the coupling pliers couple signals, for decoupling, the coupling pliers are placed on the ground plate, so that the ground plate is well grounded, and the accuracy of the high-current injection test device 10 during testing is improved.
The type of the coupling pliers is not limited in this application.
In one particular implementation, signal generator 42 is a device capable of providing electrical signals of various frequencies, waveforms, and output levels. The device is used as a signal source or excitation source for testing when measuring amplitude characteristics, frequency characteristics, transmission characteristics and other electrical parameters of various telecommunication systems or telecommunication equipment and measuring characteristics and parameters of components.
In a specific implementation scenario, the interference mechanism 40 further includes a power amplifier 43, where an input end of the power amplifier 43 is electrically connected to the signal generator 42, and is used to process an interference signal generated by the signal generator 42 into a radio frequency interference signal required by the large current injection test device 10, and an output end of the power amplifier 43 is electrically connected to the injection probe 41, and is used to transmit the radio frequency interference signal to the injection probe 41, so as to implement an interference test on the device under test 11.
In one particular implementation, the power amplifier 43 includes an amplification circuit capable of providing sufficient signal power to the injection probe 41, the power amplifier 43 functioning to increase the signal gain to a high power level and improve the accuracy of the high current injection test device 10 test without degrading the signal quality.
In one implementation scenario, the antijam mechanism 30 is an artificial power network 31, where the artificial power network 31 is also called a power impedance stabilizing network, and is an important EMC test device, and is mainly used for measuring continuous interference voltage of a measurement switch power supply sent along a power line to a power grid. The artificial power supply network 31 provides a stable impedance for the measurement switching power supply in the radio frequency range and combines the measurement switching power supply with a high frequency artificial power supply network on the power grid. The artificial power network 31 includes a first port 311, a second port 312 and a third port 313, the first port 311 of the artificial power network 31 is grounded, the second port 312 is electrically connected with the positive pole and the negative pole of the power mechanism 20 respectively, the third port 313 is coupled to the wire harness 100, and provides stable impedance to the power mechanism 20, so as to reduce the interference of radio frequency interference signals to the power mechanism 20 as much as possible, and improve the accuracy of the large current injection testing device 10 to test the device 11 to be tested.
In a specific implementation scenario, the heavy current injection test device 10 includes two artificial power networks 31, which are a first artificial power network 31 and a second artificial power network 31, where the second port 312 of the first artificial power network 31 is electrically connected to the positive electrode of the power mechanism 20, and the second port 312 of the second artificial power network 31 is electrically connected to the negative electrode of the power mechanism 20, so as to provide stable impedance to the power mechanism 20, reduce interference of radio frequency interference signals to the power mechanism 20 as much as possible, and improve the accuracy of the heavy current injection test device 10 to test the device 11 to be tested.
In one implementation scenario, the high-current injection testing device 10 further includes an insulating support 80, and at least the device under test 11 is carried on the insulating support 80, so as to reduce the influence of external factors on the device under test 11 as much as possible, and improve the accuracy of testing the device under test 11 by the high-current injection testing device 10.
In a specific implementation scenario, the structure of the insulating support 80 is a box structure, a containing cavity is formed in the box, the high-current injection testing device 10 can be integrally placed in the containing cavity, the influence of external factors on structural components of the high-current injection testing device 10 is reduced as much as possible, and the accuracy of the high-current injection testing device 10 on the to-be-tested device 11 is improved.
The structure of the insulating support 80 is not limited in this application, and the insulating support 80 is made of an insulating material, and the type of the insulating material is not limited in this application.
Through the above structure, the device under test 11 is coupled to one end of the wire harness 100, the interference mechanism 40 is coupled to the wire harness 100, and generates a radio frequency interference signal to be injected into the wire harness 100, so as to implement interference test on the device under test 11, the power supply mechanism 20 is used for supplying power to the heavy current injection testing device 10, the anti-interference mechanism 30 is coupled between the power supply mechanism 20 and the wire harness 100, the influence of the radio frequency interference signal on the power supply mechanism 20 is reduced as much as possible, the monitoring device in the heavy current injection testing device 10 includes the first monitoring sub-mechanism 51 and the second monitoring sub-mechanism 52, the first monitoring sub-mechanism 51 is coupled with the device under test 11, so that the first monitoring sub-mechanism 51 is beneficial to monitoring the operation condition of the device under test 11, and the second monitoring sub-mechanism 52 is coupled with the wire harness 100, so as to monitor the current information of the wire harness 100, i.e. the heavy current injection testing device 10 can monitor the operation condition of the device under test 11 and the current information of the wire harness 100 at the same time, so that the heavy current injection testing device 10 can provide as abundant auxiliary information as possible for the application requirements of subsequently positioning the device under test 11 at the source. Therefore, the efficiency of detecting the abnormal portion of the device under test 11 can be improved.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., a division of circuits or elements, merely a division of logic functions, and there may be additional divisions of actual implementation, e.g., multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical, or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
Claims (10)
1. A high current injection test apparatus, comprising:
the device comprises a power supply mechanism and an anti-interference mechanism coupled with the power supply mechanism, wherein the anti-interference mechanism is coupled with the device to be tested through a wire harness;
an interference mechanism coupled to the wire harness for generating a radio frequency interference signal and injecting the radio frequency interference signal into the wire harness;
the monitoring mechanism comprises a first monitoring sub-mechanism and a second monitoring sub-mechanism, wherein the first monitoring sub-mechanism is coupled with the equipment to be detected, and the second monitoring sub-mechanism is coupled to the wire harness and is used for monitoring current information of the wire harness.
2. The high current injection test apparatus of claim 1 further comprising a load mechanism mated with the device under test, the load mechanism coupled between the tamper resistant mechanism and the wiring harness.
3. The high current injection test apparatus of claim 1, wherein the second monitoring sub-mechanism comprises a monitoring probe and a current monitoring device, one end of the monitoring probe is connected with the wire harness to access a coupling current, and the current monitoring device is electrically connected with the other end of the monitoring probe to detect the current information.
4. The high current injection test apparatus of claim 3 wherein said second monitoring sub-mechanism further comprises a display circuit electrically connected to said current monitoring device for displaying said current information.
5. The high current injection test apparatus of claim 1 further comprising a test mechanism electrically connected to the output of the first monitoring sub-mechanism and the output of the second monitoring sub-mechanism, respectively, to determine a source component of the abnormal location of the device under test.
6. The high current injection test apparatus of claim 1 wherein the disturbance mechanism comprises an injection probe and a signal generator, one end of the injection probe being electrically connected to an output of the signal generator, the other end of the injection probe being coupled to the wire harness to inject the radio frequency disturbance signal into the wire harness.
7. The high current injection test apparatus of claim 6 wherein said injection probe comprises a coupling clamp clamped to and electrically connected to said wire harness.
8. The high current injection test apparatus of claim 6 wherein the disturbance mechanism further comprises a power amplifier, an input of the power amplifier being electrically connected to the signal generator, an output of the power amplifier being electrically connected to the injection probe.
9. The high current injection test apparatus of claim 1 wherein the anti-tamper mechanism is an artificial power network comprising a first port, a second port and a third port, the first port being grounded, the second port being electrically connected to the positive and negative poles of the power mechanism, respectively, the third port being coupled to the wiring harness to provide impedance to the power mechanism.
10. The high current injection test apparatus of claim 1 further comprising an insulating support, and wherein at least the device under test is carried by the insulating support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321835895.1U CN220773182U (en) | 2023-07-12 | 2023-07-12 | Heavy current injection testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321835895.1U CN220773182U (en) | 2023-07-12 | 2023-07-12 | Heavy current injection testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220773182U true CN220773182U (en) | 2024-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321835895.1U Active CN220773182U (en) | 2023-07-12 | 2023-07-12 | Heavy current injection testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220773182U (en) |
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2023
- 2023-07-12 CN CN202321835895.1U patent/CN220773182U/en active Active
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