CN114441946A

CN114441946A - Magnetic conduction device, electric control board test system and electric control board test method

Info

Publication number: CN114441946A
Application number: CN202210340934.4A
Authority: CN
Inventors: 谢铭盛
Original assignee: Guangdong Welling Motor Manufacturing Co Ltd
Current assignee: Guangdong Welling Motor Manufacturing Co Ltd
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-05-06
Anticipated expiration: 2042-04-02
Also published as: CN114441946B

Abstract

The invention provides a magnetic conduction device, an electric control board test system and an electric control board test method, and relates to the technical field of test, wherein the magnetic conduction device is used for testing an electric control board, a magnetic detection unit for detecting the change of a magnetic field is arranged on the electric control board, and the magnetic conduction device comprises: the magnetic induction circuit is used for detecting the change of a magnetic field and generating an induction electric signal when the magnetic field changes; and the electromagnetic induction coil is electrically connected with the magnetic induction circuit and generates a magnetic field based on the induced electrical signal. This kind of magnetic conduction device can conduct the magnetic field change of electric motor rotor etc. to the electromagnetic induction coil on, during the test automatically controlled board, automatically controlled board only needs to detect the magnetic field change on the electromagnetic induction coil, and does not need the magnetic field change of direct detection motor element etc. to when actual test, just need not with automatically controlled board direct mount to motor element etc. on, just so solved every hall element on the makeup of automatically controlled board and can not carry out the problem that the feedback detected to electric motor rotor magnetic pole magnetic field.

Description

Magnetic conduction device, electric control board test system and electric control board test method

Technical Field

The invention relates to the technical field of testing, in particular to a magnetic conduction device, an electric control board testing system and an electric control board testing method.

Background

The existing motor with Hall elements is designed by splicing plates, when the FCT test is carried out on the electric control plates, in view of the reason that the sizes among the splicing plates and the motor size are not matched, each Hall element on the splicing plates cannot carry out feedback detection on a magnetic pole magnetic field of a motor rotor, only independent test of single plates after board splitting can be carried out, and each motor is responsible for single plate test of one electric control plate. The test mode reduces the production efficiency and enables the manufacturing cost of the product to be higher.

Therefore, how to design a device and a testing method for detecting the magnetic field of the magnetic pole of the motor rotor by each hall element on the jointed board in a feedback manner so that the electric control board does not need to be divided into a plurality of single boards for testing during testing becomes a problem to be solved at present.

Disclosure of Invention

The invention aims to at least solve the problems of low production efficiency and high cost of the electric control board caused by the fact that the electric control board of the motor and the like in the prior art or the related art can only carry out single-board independent test after board division.

It is therefore an object of the present invention to provide a magnetically conducting device.

Another object of the present invention is to provide an electronic control board testing system.

The third purpose of the invention is to provide an electric control board testing method.

In order to achieve the above object, a first aspect of the present invention provides a magnetic conduction device for testing an electric control board, the electric control board having a magnetic detection unit, the magnetic conduction device comprising: a circuit substrate for mounting on the magnetism generating device; the magnetic induction circuit is arranged on the circuit substrate and used for inducing the change of the magnetic field generated by the magnetic generation device and generating an induced electric signal under the condition that the magnetic field is changed; the electromagnetic induction coil is arranged corresponding to the magnetic detection unit, is electrically connected with the magnetic induction circuit and can generate a magnetic field based on an induced electrical signal; the magnetic field change generated by the magnetic generation device can be transferred to the electromagnetic induction coil through the magnetic conduction device, and when the electric control board is tested, the electric control board detects the magnetic field change generated by the electromagnetic induction coil through the magnetic detection unit and takes the detected magnetic field change as the magnetic field change generated by the magnetic generation device.

According to the magnetic conduction device provided by the invention, the magnetic field change generated by the magnetic generation device (such as a motor component) is transmitted to the magnetic detection unit (such as a Hall sensor) on the electric control board, so that the electric control board can control the magnetic generation device, such as the motor component and the like, based on the data fed back by the magnetic detection unit such as the Hall sensor and the like, then the operation data of the magnetic generation device, such as the motor component and the like, under the electric control board can be obtained, and then whether the electric control board works normally can be determined based on the analysis of the operation data, so that the FCT test of the electric control board can be completed. Specifically, the magnetic conduction device includes a circuit substrate, a magnetic induction circuit, and an electromagnetic induction coil. The circuit substrate is used for carrying parts such as a magnetic induction circuit and the like so as to place the magnetic induction circuit in a magnetic field environment generated by the magnetic generation device. The magnetic induction circuit is arranged on a magnetic generation device such as a motor and the like through a circuit substrate, for example, when the magnetic induction circuit is used, the circuit substrate can be directly arranged above the motor component, so that the magnetic induction circuit can sense the magnetic field change generated by the magnetic generation device such as the motor component, and after the magnetic induction circuit detects the magnetic field change, the magnetic field change is converted into an induced electrical signal (mainly a voltage signal) according to the principle of magnetic generation, and then the induced electrical signal can be input into the electromagnetic induction coil, so that the electromagnetic induction coil can generate a magnetic field based on the induced electrical signal, thus the magnetic field change on the magnetic generation device is converted into the magnetic field change on the electromagnetic induction coil, therefore, when in the test, the electric control board only needs to detect the magnetic field and the change on the electromagnetic induction coil through a magnetic detection unit such as a Hall sensor, and then the feedback adjustment can be realized on the motor component, therefore, the operation environment of the electric control board can be simulated, the electric control board can work in various design states, and then the output signal of the electric control board in the test environment, such as the operation data (such as the motor speed and the like) of a magnetic generation device such as a motor and the like, can be monitored to be used as the test data of the electric control board so as to judge whether the electric control board works normally, so that the FCT test of the electric control board can be completed. By the magnetic conduction device provided by the application, because the magnetic field change of the motor component and the like can be transferred to the electromagnetic induction coil, the electric control board only needs to detect the magnetic field change on the electromagnetic induction coil and does not need to directly detect the magnetic field change of the motor component, so that in the actual test process, only the magnetic induction circuit of the magnetic conduction device needs to be installed corresponding to the motor component and the like, and then the electromagnetic induction coil is installed corresponding to the magnetic detection unit of the electric control board, so that the magnetic field change generated by the magnetic generation device can be obtained without directly installing the electric control board on the magnetic generation device of the motor component and the like, and the problem that the size between the splicing plates of the electric control board is not matched with the motor volume, and each Hall element (such as a Hall sensor) on the splicing plates can not perform feedback detection on the magnetic pole field of the motor rotor is solved, in the actual process, the electric control board is not required to be split into a plurality of single boards for testing, so that the whole testing process of the electric control board is simplified, the testing efficiency of the electric control board is improved, the testing cost of the electric control board is reduced, the production process of the electric control board is more continuous, the production efficiency of the electric control board is improved, and the production cost of the electric control board is reduced.

In the above technical solution, the magnetic conduction apparatus further includes: and the coil control circuit is connected with the electromagnetic induction coil and used for adjusting the size of the magnetic field generated by the electromagnetic induction coil according to the induction electric signal.

In the technical scheme, the coil control circuit is mainly used for controlling the size and the direction of a magnetic field on the electromagnetic induction coil. Because the distance between the magnetic induction circuit and the magnetic generation device such as the motor component and the like and the amplification power of the signal amplification circuit and the like can influence the magnitude of the output induction electric signal, the magnetic field simulated by the electromagnetic induction coil can better meet the actual requirement, and the interference of the magnetic field generated by the electromagnetic induction coil on other magnetic detection units on the electric control board can be avoided, so that the magnitude of the magnetic field generated by the electromagnetic induction coil can be reasonably controlled through the coil control circuit.

Meanwhile, in order to avoid the electromagnetic induction coil from interfering with other magnetic detection units (generally, hall sensors) on the electric control board, the relative position and the relative installation angle between the electromagnetic induction coil and the electric control board need to be set reasonably.

In addition, current veneer test, each veneer all need through workman plug power cord, and the test mode that this application provided does not need repeated plug power cord, therefore makes the production processes of automatically controlled board more continuous, is fit for streamlined production, so has improved the production efficiency of automatically controlled board, has reduced the manufacturing cost of automatically controlled board.

The FCT (functional Test) refers to a Test method for providing a simulated operating environment (excitation and load) for a Test target board (UUT: Unit Under Test) to enable the Test target board to work in various design states, and thus obtaining parameters of each state to verify the function of the UUT. Simply put, the UUT is loaded with the appropriate stimulus and the output response is measured for compliance. The functional test of PCBA (printed Circuit Board Assembly), that is, the printed Circuit Board, is generally specified.

The magnetic conduction device in the present application can be used for FCT detection of the electric control board of the motor with the hall element, but is not limited to FCT detection of the electric control board of the motor with the hall element, and the magnetic conduction device can be used for conducting magnetic field changes in the function tests of other electric control boards with the hall element.

The electromagnetic induction coil in the application is a multi-turn coil with at least two turns. The output magnetic field is controlled in real time according to the requirement by the electromagnetic induction principle.

In the application, when the magnetic conduction device is used for testing the electric control board of the motor, the magnetic field change of the rotor of the motor can be conducted to the electromagnetic induction coil by the magnetic conduction device, and the electric control board can detect the magnetic field change of the electromagnetic induction coil, so that the rotating speed change of the motor can be known, and therefore whether the motor works normally can be determined based on the rotating speed change of the motor, so that the performance of the electric control board can be determined based on the working state of the motor, and the performance test of the electric control board is achieved.

In addition, the magnetic conduction device provided by the application also has the following additional technical characteristics:

furthermore, the electromagnetic induction coil, the magnetic induction circuit and the coil control circuit are combined into a closed loop, so that when the magnetic induction circuit induces the change of the magnetic field to generate an induced electric signal, the induced electric signal can enable the electromagnetic induction coil to generate current, and further enable the electromagnetic induction coil to generate the magnetic field.

Further, the induced electrical signal is a pulse signal, which is consistent with the pulse of the signal sent by the rotor magnetic pole at the motor end.

In the above technical solution, the magnetic conduction apparatus further includes: and the signal amplification circuit is connected with the magnetic induction circuit, amplifies the induced electrical signal from the magnetic induction circuit and transmits the amplified induced electrical signal to the coil control circuit.

In the technical scheme, the signal amplification circuit mainly comprises an operational amplifier and the like, and mainly amplifies the induction electric signal so as to generate a magnetic field by using the amplified induction electric signal in the following process. The signal amplification circuit can amplify signals, so that subsequent operation is more convenient and accurate.

Besides the operational amplifier, the signal amplifying circuit can also comprise conventional circuit devices such as a resistor, a capacitor and the like.

Further, the coil control circuit includes a resistance device, and a resistance value of the resistance device can be adjusted.

In this technical scheme, coil control circuit includes resistance device, for example sliding resistor, alright change the magnetic field of electromagnetic induction coil through the resistance value of adjusting resistance device, realizes the regulation to the electric current size on the electromagnetic induction coil to realize the regulation to the magnetic field size that the electromagnetic induction coil produced.

In any of the above technical solutions, the magnetic induction circuit includes a magnetic induction element, and the magnetic induction element is used to detect a magnetic field change of an environment where the magnetic induction element is located, for example, when the electronic control board is tested, the magnetic induction element may be installed on a rotor of the motor to induce the magnetic field change of the rotor of the motor. The magnetic induction element may be embodied as a hall sensor.

In any of the above technical solutions, the magnetic induction circuit, the signal amplification circuit, and the coil control circuit are disposed on the circuit substrate. Furthermore, a first port is arranged on the circuit substrate, and the electromagnetic induction coil is electrically connected with the magnetic induction circuit through the first port.

In this embodiment, the magnetic conduction device further includes a circuit board. The circuit substrate is used for being installed on a motor assembly and the like, and the circuit substrate is used as a base of the magnetic induction circuit and the signal amplification circuit and used for bearing and installing various parts such as the magnetic induction circuit and the signal amplification circuit. Meanwhile, a port is arranged on the circuit substrate and used for connecting the input and the output of a power supply or a signal. Specifically, in order to transmit an output signal of the magnetic induction circuit or the signal amplification circuit to the electromagnetic induction coil, a first port may be provided on the circuit substrate to output an induced electric signal. And the electromagnetic induction coil can be connected with the first port through a wire and the like and then electrically connected with the magnetic induction circuit or the signal amplification circuit based on the first port.

Further, the magnetic conduction device further includes: and the lead is used for connecting the first port and the electromagnetic induction coil so as to electrically connect the magnetic induction circuit and the electromagnetic induction coil. Also connect through the wire between electromagnetic induction coil and the first port for when automatically controlled board test, electromagnetic induction coil's position can be adjusted at will, thereby makes electromagnetic induction coil's spatial position better arrange, just so realized a magnetic conduction device that can long distance, nimble conduction.

Of course, the electromagnetic coil and the first port may be connected by a mechanical terminal or the like, and at this time, the position flexibility of the electromagnetic coil is slightly inferior.

Further, a mounting structure adapted to the magnetism generating device is provided on the circuit board, and the circuit board can be mounted on the magnetism generating device through the mounting structure. The mounting structure can realize the position fixation of the magnetic generating device relative to the motor assembly, thereby more accurately detecting the magnetic field change of the magnetic generating device such as the motor assembly.

Further, the mounting structure is a mounting hole or a mounting notch provided on the circuit substrate. The mounting hole or the mounting notch is matched with the shape of the magnetic generating device such as the motor component and the like so as to be sleeved and mounted on the magnetic generating device such as the motor component and the like.

Further, the circuit board is flat and semicircular.

Furthermore, the magnetic induction circuit and the circuit substrate are of an integrated structure, namely the magnetic induction circuit and the circuit substrate are mounted together, namely the magnetic induction circuit is located outside the detection of the rotor magnetic pole of the detection motor and outside the detection of the electric control plate.

Further, a second port for turning on a power supply and a third port for signal input are provided on the circuit substrate.

In any one of the above technical solutions, the number of the magnetic induction circuits and the number of the electromagnetic induction coils are plural, and the plurality of electromagnetic induction coils and the plurality of magnetic induction circuits are arranged in a one-to-one correspondence manner.

In the technical scheme, three Hall sensors are generally arranged on one electric control board corresponding to three-phase currents. Therefore, a magnetic induction circuit and an electromagnetic induction coil are correspondingly arranged for each hall sensor. That is, the number of the magnetic induction circuits and the number of the electromagnetic induction coils correspond to the hall sensors on the electric control board.

Further, a plurality of magnetic induction circuits are mounted on the same circuit substrate.

Wherein, an electric control board is generally provided with three Hall sensors corresponding to three-phase current. Therefore, an electromagnetic induction coil and a magnetic induction circuit are correspondingly arranged for each hall sensor. That is, the quantity of the electromagnetic induction coils and the magnetic induction circuits corresponds to the quantity of the Hall sensors on the electric control board.

Furthermore, the electric control board comprises a plurality of jointed boards, each jointed board is provided with a plurality of magnetic detection units, and the magnetic detection units on the same jointed board are correspondingly provided with electromagnetic induction coils and magnetic induction circuits; a plurality of magnetic induction circuits corresponding to the same jointed board are arranged on the same substrate. That is, a jigsaw is provided with a set of magnetic conduction device, and a set of magnetic conduction device comprises a plurality of electromagnetic induction coils, a plurality of magnetic induction circuits, a plurality of coil control circuits and a substrate. Generally, a panel is provided with a set of magnetically conductive means. One set of magnetic conduction device comprises three electromagnetic induction coils, three magnetic induction circuits, three coil control circuits and a substrate.

The technical solution of the second aspect of the present invention provides an electronic control board testing system, including: the device comprises a magnetic generating device, an electric control board to be tested and the magnetic conducting device provided by any one of the technical schemes of the first aspect. The electric control board is provided with a magnetic detection unit. The magnetic induction circuit of the magnetic conduction device is arranged corresponding to the magnetic generation device. The electromagnetic induction coil of the magnetic conduction device is arranged corresponding to the magnetic detection unit. The magnetic detection unit is capable of detecting a magnetic field generated by the electromagnetic induction coil. The electronic control board test system further comprises: the test control system is connected with the electric control board to control the work of the electric control board, and obtains the operation data of the magnetic generation device from the electric control board as the test data of the electric control board; the magnetic induction circuit is used for inducing the magnetic field change generated by the magnetic generation device and converting the magnetic field change into an induced electrical signal to be output. The electromagnetic induction coil of the magnetic conduction device is used for converting the induced electrical signal into a magnetic field for detection by the magnetic detection unit. The electric control board can control the magnetic generation device to generate a magnetic field based on detection data of the magnetic detection unit. The magnetic field change generated by the magnetic generation device can be transferred to the electromagnetic induction coil through the magnetic conduction device, and when the electric control board is tested, the electric control board detects the magnetic field change generated by the electromagnetic induction coil through the magnetic detection unit and takes the detected magnetic field change as the magnetic field change generated by the magnetic generation device.

The electric control board testing system provided by the technical scheme of the invention comprises a magnetic generating device, an electric control board to be tested and a magnetic conduction device. The magnetic conduction device is used for transmitting the magnetic field change generated by the magnetic generation device (such as a motor component) to the magnetic detection unit (such as a Hall sensor) on the electric control board, so that the electric control board can control the magnetic generation device (such as the motor component) to work based on the data fed back by the magnetic detection unit such as the Hall sensor, and the like, then the running data of the magnetic generation device (such as the motor component) under the electric control board can be obtained, and then whether the electric control board works normally can be determined based on the analysis of the running data, so that the test (such as an FCT test) of the electric control board can be completed. Specifically, the magnetic conduction device includes a magnetic induction circuit and an electromagnetic induction coil. Wherein, the magnetic induction circuit is used for installing corresponding to a magnetic generating device such as a motor, for example, when in use, the magnetic induction circuit can be directly installed above the motor component so as to be capable of sensing the magnetic field change generated by the magnetic generating device such as the motor component, and after the magnetic induction circuit detects the magnetic field change, the magnetic field change is converted into an induced electrical signal according to the magnetic generating principle, then the induced electrical signal can be input into the electromagnetic induction coil, so that the electromagnetic induction coil can generate a magnetic field based on the induced electrical signal, thus the magnetic field change on the magnetic generating device is converted into the magnetic field change on the electromagnetic induction coil, therefore, when in test, the electric control board only needs to detect the magnetic field and the change on the electromagnetic induction coil through the magnetic detection unit such as a Hall sensor, then the feedback adjustment can be realized on the motor component, thereby simulating the operation environment of the electric control board, the electric control board is enabled to work in various design states, and then output signals of the electric control board in the test environment, such as running data of a magnetic generation device such as a motor, can be monitored to judge whether the electric control board works normally, so that the FCT test of the electric control board can be completed. By the magnetic conduction device provided by the application, because the magnetic field change of the motor component and the like can be transferred to the electromagnetic induction coil, the electric control board only needs to detect the magnetic field change on the electromagnetic induction coil and does not need to directly detect the magnetic field change of the magnetic generation device such as the motor component and the like, so that in the actual test process, only the magnetic induction circuit of the magnetic conduction device needs to be installed corresponding to the motor component and the like, and then the electromagnetic induction coil is installed corresponding to the magnetic detection unit of the electric control board, so that the magnetic field change generated by the magnetic generation device can be obtained without directly installing the electric control board on the magnetic generation device such as the motor component, the problem that the size between the spliced boards of the electric control board is not matched with the motor volume, and each Hall element on the spliced boards cannot perform feedback detection on the magnetic pole field of the motor rotor is solved, and in the actual process, the electric control board is not required to be split into a plurality of single boards for testing, so that the whole testing process of the electric control board is simplified, the testing efficiency of the electric control board is improved, the testing cost of the electric control board is reduced, the production process of the electric control board is more continuous, the production efficiency of the electric control board is improved, and the production cost of the electric control board is reduced. Meanwhile, since the electric control board testing system includes the magnetic conduction device provided in the technical solution of the first aspect, the electric control board testing system has all the beneficial effects of the magnetic conduction device provided in any one of the technical solutions of the first aspect, and details are not repeated here.

In the present application, the test control system is mainly used for completing the test work, for example, generating a test report of the electronic control board based on the test data, or issuing different instructions to the electronic control board based on the requirement to be tested, so as to simulate different working environments. Further, the test control system may include a display screen to display operation data of the motor assembly and the like, so as to conveniently judge whether the motor assembly is normally operated, thereby determining whether the performance of the electric control board is normal.

In any of the above technical solutions, the magnetic detection unit includes a hall sensor. That is, the hall sensor is arranged on the electric control board to feed back the magnetic field generated by the motor and the like, so that the electric control board can conveniently feed back and control the work of the motor component and the like.

Furthermore, the electric control plates are splicing plates, the number of the splicing plates is consistent with that of the magnetic conduction devices, and a set of magnetic conduction devices is correspondingly arranged for each splicing plate to conduct the magnetic field. Therefore, different splicing plates of the electric control plate can be tested simultaneously. Of course, different splice plates can also share one set of magnetic conduction device to test in sequence.

Wherein the magnetic detection unit comprises a hall sensor. Because the hall sensor is a relatively common device for detecting the change of the magnetic field, the hall sensor is easy to purchase, and the cost of the product can be reduced.

Further, the magnetism generating device is a motor assembly, that is, a mechanical component of a normal motor (not including a motor control board), and further, the magnetism generating device includes a rotor of the motor assembly, that is, the magnetic induction circuit in the present application is mainly used for detecting a change of a magnetic field generated by the rotor of the motor. That is, the magnetic conduction device in the present application is a magnetic field change that transfers the magnetic field change of the motor rotor to the electromagnetic induction coil.

The technical solution of the third aspect of the present invention provides an electronic control board testing method, which is used in the electronic control board testing system provided in any one of the technical solutions of the second aspect, and the electronic control board testing method includes: the magnetic conduction device senses the magnetic field change generated by the magnetic generation device and converts the magnetic field change into an induced electrical signal; the electromagnetic induction coil generates a magnetic field based on the induction electric signal; the magnetic detection unit detects a magnetic field generated by the electromagnetic induction coil; the electric control board controls the work of the magnetic generation device based on the detection data of the magnetic detection unit; the test control system acquires the running data of the magnetic generation device in the test process through the electric control board as the test data of the electric control board; the magnetic field change generated by the magnetic generation device can be transferred to the electromagnetic induction coil through the magnetic conduction device, and when the electric control board is tested, the electric control board detects the magnetic field change generated by the electromagnetic induction coil through the magnetic detection unit and takes the detected magnetic field change as the magnetic field change generated by the magnetic generation device.

The electric control board testing method provided by the invention is used for an electric control board testing system. The electric control board testing system comprises a magnetic generating device, an electric control board to be tested and a magnetic conduction device. The magnetic conduction device is used for transmitting the magnetic field change generated by the magnetic generation device (such as a motor component) to the magnetic detection unit (such as a Hall sensor) on the electric control board, so that the electric control board can control the magnetic generation device (such as the motor component) to work based on the data fed back by the magnetic detection unit such as the Hall sensor, and the like, then the running data of the magnetic generation device (such as the motor component) under the electric control board can be obtained, and then whether the electric control board works normally can be determined based on the analysis of the running data, so that the test (such as an FCT test) of the electric control board can be completed. Specifically, the magnetic conduction device includes a magnetic induction circuit and an electromagnetic induction coil. Wherein, the magnetic induction circuit is used for installing corresponding to a magnetic generating device such as a motor, for example, when in use, the magnetic induction circuit can be directly installed above the motor component so as to be capable of sensing the magnetic field change generated by the magnetic generating device such as the motor component, and after the magnetic induction circuit detects the magnetic field change, the magnetic field change is converted into an induced electrical signal according to the magnetic generating principle, then the induced electrical signal can be input into the electromagnetic induction coil, so that the electromagnetic induction coil can generate a magnetic field based on the induced electrical signal, thus the magnetic field change on the magnetic generating device is converted into the magnetic field change on the electromagnetic induction coil, therefore, when in test, the electric control board only needs to detect the magnetic field and the change on the electromagnetic induction coil through the magnetic detection unit such as a Hall sensor, then the feedback adjustment can be realized on the motor component, thereby simulating the operation environment of the electric control board, the electric control board is enabled to work in various design states, then output signals of the electric control board in the test environment, such as running data of a magnetic generation device such as a motor, can be monitored through a test control system and the like to serve as test data of the electric control board, and then whether the electric control board works normally can be judged based on the data, so that the FCT test of the electric control board can be completed. By the magnetic conduction device provided by the application, because the magnetic field change of the motor component and the like can be transferred to the electromagnetic induction coil, the electric control board only needs to detect the magnetic field change on the electromagnetic induction coil and does not need to directly detect the magnetic field change of the magnetic generation device such as the motor component and the like, so that in the actual test process, only the magnetic induction circuit of the magnetic conduction device needs to be installed corresponding to the motor component and the like, and then the electromagnetic induction coil is installed corresponding to the magnetic detection unit of the electric control board, so that the magnetic field change generated by the magnetic generation device can be obtained without directly installing the electric control board on the magnetic generation device such as the motor component, the problem that the size between the spliced boards of the electric control board is not matched with the motor volume, and each Hall element on the spliced boards cannot perform feedback detection on the magnetic pole field of the motor rotor is solved, and in the actual process, the electric control board is not required to be split into a plurality of single boards for testing, so that the whole testing process of the electric control board is simplified, the testing efficiency of the electric control board is improved, the testing cost of the electric control board is reduced, the production process of the electric control board is more continuous, the production efficiency of the electric control board is improved, and the production cost of the electric control board is reduced.

Further, the magnetic conduction device used in the method for testing the electronic control board is the magnetic conduction device provided in any embodiment of the first aspect.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic circuit diagram of a magnetic conduction device according to an embodiment of the present invention;

fig. 2 is a schematic circuit structure diagram of an electronic control board testing system provided in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a magnetic conduction device provided by an embodiment of the present invention;

fig. 4 is another schematic structural diagram of a magnetic conduction device provided by an embodiment of the present invention;

fig. 5 is a schematic view of another structure of the magnetic conduction apparatus provided by the embodiment of the present invention;

fig. 6 is a schematic structural diagram of the 1 st electronic control board testing system provided by the embodiment of the invention;

fig. 7 is a schematic structural diagram of a 2 nd electronic control board testing system provided by the embodiment of the invention;

fig. 8 is a schematic structural diagram of the 3 rd electronic control board testing system provided by the embodiment of the invention;

fig. 9 is a schematic structural diagram of the 4 th electronic control board testing system provided by the embodiment of the invention;

fig. 10 is a schematic structural diagram of a 5 th structure of an electronic control board testing system provided by an embodiment of the invention;

fig. 11 is a schematic flow chart of an electric control board testing method according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 10 is:

the circuit board comprises an electric control board 1, a motor component 2, a magnetic conduction device 3, a magnetic induction circuit 30, a magnetic induction element 302, a signal amplification circuit 32, an electromagnetic induction coil 34, a coil control circuit 36, a resistance device 362, a circuit substrate 38, a mounting notch 382 and a lead 39.

Detailed Description

So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The magnetic conduction device 3 and the electronic control board test system provided by the embodiment of the present application are described below with reference to fig. 1 to 10.

Example one

As shown in fig. 1 and fig. 3 to 5, an embodiment of the first aspect of the present invention provides a magnetic conduction device 3 for testing an electronic control board 1, a magnetic detection unit is provided on the electronic control board 1, and the magnetic conduction device 3 includes an electromagnetic induction coil 34 and a magnetic induction circuit 30, and a lead wire 39 electrically connecting the electromagnetic induction coil 34 and the magnetic induction circuit 30, and a circuit substrate 38 for mounting the magnetic induction circuit 30 and the like. The circuit board 38 is for mounting on the magnetism generating device. The magnetic induction circuit 30 is mounted on the circuit substrate 38 for detecting a change in a magnetic field in which the magnetic induction circuit 30 is located. The magnetic induction circuit 30 generates an induced electric signal when the magnetic field changes. The electromagnetic induction coil 34 is capable of generating a magnetic field based on an induced electric signal and is provided corresponding to the magnetic detection unit. The magnetic conduction device 3 can transfer the magnetic field change generated by the magnetic generation device such as the motor assembly 2 to the electromagnetic induction coil 34, when the electric control board 1 is tested, the electric control board 1 detects the magnetic field change generated by the electromagnetic induction coil 34 through the magnetic detection unit, and uses the detected magnetic field change as the magnetic field change generated by the magnetic generation device, so that the magnetic field change generated by the magnetic generation device can be acquired without installing the electric control board 1 on the magnetic generation device, and the work of the magnetic generation device such as the motor assembly 2 is controlled. Thereafter, the operation data of the magnetic generating devices such as the motor assembly 2 acquired by the electric control board 1 can be used as the test data of the electric control board 1, and whether the electric control board 1 meets the requirements or not can be judged through the data.

As shown in fig. 1 to 5, the magnetic conduction device 3 according to the present invention is configured to transmit a change of a magnetic field generated by a magnetic generation device (e.g., a motor assembly 2) to a magnetic detection unit (e.g., a hall sensor) on an electric control board 1, so that the electric control board 1 can control the magnetic generation device, e.g., the motor assembly 2, based on data fed back by the magnetic detection unit, e.g., the hall sensor, and then obtain operation data of the magnetic generation device, e.g., the motor assembly 2, under the electric control board 1 as test data of the electric control board 1, and then determine whether the electric control board 1 is normally operated based on analysis of the operation data, so as to complete an FCT test of the electric control board 1. Specifically, the magnetic conduction device 3 includes a magnetic induction circuit 30 and an electromagnetic induction coil 34 electrically connected by a wire 39. Wherein, the magnetic induction circuit 30 is used for being installed corresponding to a magnetic generating device such as a motor, for example, when in use, the magnetic induction circuit 30 can be directly installed above the motor component 2 so as to be capable of sensing the magnetic field change generated by the magnetic generating device such as the motor component 2, and after the magnetic induction circuit 30 detects the magnetic field change, the magnetic field change is converted into an induced electrical signal according to the magnetic generating principle, and then the induced electrical signal can be input into the electromagnetic induction coil 34, so that the electromagnetic induction coil 34 can generate a magnetic field based on the induced electrical signal, so that the magnetic field change on the magnetic generating device is converted into the magnetic field change on the electromagnetic induction coil 34, so that when in test, the electric control panel 1 only needs to detect the magnetic field and the change on the electromagnetic induction coil 34 through a magnetic detection unit such as a hall sensor, and then the feedback adjustment can be realized for the motor component 2, so as to simulate the operating environment of the electric control panel 1, the electric control board 1 is enabled to work in various design states, and then output signals of the electric control board 1 in the test environment, such as running data of a magnetic generation device such as a motor, can be monitored to judge whether the electric control board 1 works normally, so that the FCT test of the electric control board 1 can be completed. The magnetic conduction device 3 can conduct magnetic field directional quantitative conduction on irregular driving jointed boards and the like of a motor with a Hall element, can conduct magnetic field signals in real time, is consistent with signal pulses sent by rotor magnetic poles and the like at the motor end, and can be used by a magnetic detection unit on the electric control board 1. With the magnetic conduction apparatus 3 provided by the present application, since it is possible to transfer the magnetic field variation of the motor assembly 2 and the like to the electromagnetic induction coil 34, therefore, the electric control board 1 only needs to detect the magnetic field change on the electromagnetic induction coil 34, and does not need to directly detect the magnetic field change of the motor assembly 2, therefore, in the actual test process, only the magnetic induction circuit 30 of the magnetic conduction device 3 needs to be installed corresponding to the motor component 2 and the like, then the electromagnetic induction coil 34 is installed corresponding to the magnetic detection unit of the electric control board 1, so that the electric control board 1 does not need to be directly installed on the motor component 2, the problem that the size between the splicing plates of the electric control board 1 is not matched with the volume of the motor is solved, and the problem that each Hall element on the jointed board can not carry out feedback detection on the magnetic field of the magnetic pole of the motor rotor is solved, and the obstruction of the jointed board size of the electric control board 1 and the volume of the motor to the FCT test of the motor-driven PCBA jointed board is also solved. In the actual process, the electric control board 1 does not need to be split into a plurality of single boards for testing, so that the whole testing process of the electric control board 1 is simplified, the testing efficiency of the electric control board 1 is improved, the testing cost of the electric control board 1 is reduced, the production process of the electric control board 1 is more continuous, the production efficiency of the electric control board 1 is improved, and the production cost of the electric control board 1 is reduced.

Further, the magnetic induction circuit 30 and the electromagnetic induction coil 34 are electrically connected through a wire 39, so that the position of the electromagnetic induction coil 34 can be adjusted at will, and the spatial position of the electromagnetic induction coil 34 is better arranged.

As shown in fig. 1 and 2, the magnetic conduction apparatus 3 further includes a coil control circuit 36 connected to the electromagnetic induction coil 34 for adjusting the magnitude of the magnetic field generated by the electromagnetic induction coil 34 according to the induced electrical signal. The coil control circuit 36 is mainly used for controlling the magnitude and direction of the magnetic field on the electromagnetic induction coil 34. Because the distance between the magnetic induction circuit 30 and the magnetic generation device such as the motor assembly 2, the amplification power of the signal amplification circuit 32, and the like all affect the magnitude of the output induced electrical signal, in order to make the magnetic field simulated by the electromagnetic induction coil 34 more meet the actual requirement, the magnetic field generated by the electromagnetic induction coil 34 is also prevented from generating interference on other magnetic detection units on the electric control board 1, so that the magnitude of the magnetic field generated by the electromagnetic induction coil 34 can be adaptively adjusted through the coil control circuit 36.

In addition, in the existing veneer test, each veneer needs to be plugged and unplugged by workers, and the test mode provided by the application does not need repeated plugging and unplugging of power lines, so that the production process of the electric control board 1 is more continuous, the electric control board is suitable for flow line production, the production efficiency of the electric control board 1 is improved, and the production cost of the electric control board 1 is reduced.

The FCT (functional Test) refers to a Test method for providing a simulated operating environment (excitation and load) for a Test target board (UUT: Unit Under Test) to enable the Test target board to work in various design states, and thus obtaining parameters of each state to verify the function of the UUT. Simply put, the UUT is loaded with the appropriate stimulus and the output response is measured for compliance. Generally, refers specifically to functional testing of the PCBA.

The magnetic conduction device 3 in the present application can be used for FCT detection of the electric control board of the motor with hall element, but is not limited to FCT detection of the electric control board of the motor with hall element, and the magnetic conduction device 3 can be used for conducting magnetic field changes in the function test of other electric control boards with hall elements.

Further, the coil control circuit 36 includes a resistance device 362. The resistance of the resistance device 362 can be adjusted.

In this embodiment, as shown in fig. 3 and fig. 5, the coil control circuit 36 includes a resistance device 362, such as a sliding resistor, and the magnetic field of the electromagnetic induction coil 34 can be changed by adjusting the resistance value of the resistance device 362, so as to adjust the magnitude of the current on the electromagnetic induction coil 34.

In the above embodiment, as shown in fig. 4 and 5, the magnetic induction circuit 30 includes the magnetic induction element 302, and the magnetic induction element 302 is used for detecting the magnetic field change of the environment where the magnetic induction element 302 is located, for example, when the electronic control board 1 is tested, the magnetic induction element 302 may be mounted to the rotor of the motor to induce the magnetic field change of the rotor of the motor. The magnetic induction element 302 may be embodied as a hall sensor.

In any of the above embodiments, as shown in fig. 3 to 5, the magnetic induction circuit 30, the signal amplification circuit 32, and the coil control circuit 36 are provided on the circuit substrate 38. Further, a first port connected to the magnetic induction circuit 30 is provided on the circuit substrate 38. The electromagnetic coil 34 is electrically connected to the magnetic induction circuitry 30 through the first port. The first port and the electromagnetic coil 34 are connected by a wire 39.

In this embodiment, the circuit substrate 38 is used for mounting on the motor assembly 2 and the like, and the circuit substrate 38 serves as a base for the magnetic induction circuit 30 and the signal amplification circuit 32, and is used for carrying and mounting various components such as the magnetic induction circuit 30 and the signal amplification circuit 32. Meanwhile, a port is provided on the circuit substrate 38 for connecting input and output of power or signals. Specifically, in order to transmit the output signal of the magnetic induction circuit 30 or the signal amplification circuit 32 to the electromagnetic induction coil 34, a first port may be provided on the circuit substrate 38 to output an induced electric signal. The electromagnetic induction coil 34 may be connected to the first port through a wire 39 or the like, and then electrically connected to the magnetic induction circuit 30 or the signal amplification circuit 32 based on the first port, thereby achieving electrical connection between the magnetic induction circuit 30 and the electromagnetic induction coil 34.

Further, as shown in fig. 7 to 9, a mounting structure adapted to the magnetism generating device is provided on the circuit substrate 38, and the circuit substrate 38 can be mounted on the magnetism generating device by the mounting structure. The mounting structure can fix the position of the magnetic generator relative to the motor assembly 2, thereby more accurately detecting the magnetic field change of the magnetic generator such as the motor assembly 2.

Further, as shown in fig. 3 and 4, the mounting structure is a mounting hole or mounting notch 382 provided on the circuit substrate 38. The mounting hole or the mounting notch 382 is adapted to the shape of the magnetic generating device such as the motor assembly 2 so as to be capable of being sleeved and mounted on the magnetic generating device such as the motor assembly 2.

Further, as shown in fig. 3 and 4, the circuit board 38 has a semicircular flat shape.

Further, the magnetic induction circuit 30 and the circuit substrate 38 are of an integrated structure, that is, the magnetic induction circuit 30 is mounted with the circuit substrate 38, that is, the magnetic induction circuit 30 is located outside the detection of the rotor magnetic poles of the detection motor and outside the detection of the electronic control board 1. Of course, the magnetic induction circuit 30 may be only partially fixed to the circuit substrate 38 and not partially fixed to the circuit substrate 38, for example, the magnetic induction element 302 may be provided on the circuit substrate 38, and the signal amplification circuit 32 and the like may be provided separately from the circuit substrate 38.

Further, the circuit board 38 is provided with a second port for turning on the power supply. And a third port for signal input is provided on the circuit substrate 38.

In any of the above embodiments, the number of the magnetic induction circuits 30 and the number of the electromagnetic induction coils 34 are plural, and the plurality of electromagnetic induction coils 34 and the plurality of magnetic induction circuits 30 are provided in one-to-one correspondence.

In this embodiment, three hall sensors are provided on one electronic control board 1, typically corresponding to three-phase currents. Therefore, the magnetic induction circuit 30 and the electromagnetic induction coil 34 are provided for each hall sensor. That is, the number of the magnetic induction circuits 30 and the number of the electromagnetic induction coils 34 correspond to the hall sensors on the electronic control board 1.

Further, a plurality of magnetic induction circuits 30 are mounted on the same circuit substrate 38.

Wherein, three hall sensors are generally arranged on one electric control board 1 corresponding to three-phase current. Therefore, the electromagnetic induction coil 34 and the magnetic induction circuit 30 are provided for each hall sensor. That is, the number of the electromagnetic induction coils 34 and the magnetic induction circuits 30 corresponds to the number of the hall sensors on the electronic control board 1.

Furthermore, the electric control board 1 comprises a plurality of jointed boards, each jointed board is provided with a plurality of magnetic detection units, and the magnetic detection units on the same jointed board are correspondingly provided with an electromagnetic induction coil 34 and a magnetic induction circuit 30; a plurality of magnetic induction circuits 30 provided corresponding to the same jointed board are mounted on the same substrate. That is, one panel is provided with a set of magnetic conduction devices 3, and a set of magnetic conduction devices 3 includes a plurality of electromagnetic induction coils 34, a plurality of magnetic induction circuits 30, a plurality of coil control circuits 36 and a substrate. Generally, a panel is provided with a set of magnetic conduction devices 3, and the set of magnetic conduction devices 3 includes three electromagnetic induction coils 34 and three magnetic induction circuits 30, three coil control circuits 36 and a substrate. The magnetic field change generated by the electromagnetic induction coil and the magnetic field change generated by the motor rotor and the like are not required to be completely consistent, but the frequency requirement is consistent, that is, the magnetic field intensity generated by the electromagnetic induction coil and the magnetic field intensity generated by the motor rotor and the like can be consistent or inconsistent. In the practical process, the installation position and the angle of the electromagnetic induction coil relative to the electric control board are reasonably adjusted so as to avoid the electromagnetic induction coil from interfering the work of other magnetic detection units (generally, Hall sensors) on the electric control board.

Example two

As shown in fig. 1 and 2, example 2 of the first aspect of the present invention provides a magnetic conduction apparatus 3. This embodiment differs from the first embodiment mainly in that the magnetic conducting means 3 further comprises a signal amplifying circuit 32.

Specifically, the magnetic conduction device 3 includes: an electromagnetic induction coil 34, a magnetic induction circuit 30, a coil control circuit 36, and a signal amplification circuit 32. The magnetic induction circuit 30 is used for detecting the change of the magnetic field of the magnetic conduction device 3. The magnetic induction circuit 30 generates an induced electric signal when the magnetic field changes. The coil control circuit 36 is connected to the electromagnetic induction coil 34, and can adjust the magnitude of the magnetic field generated by the electromagnetic induction coil 34 in accordance with the induced electric signal. The signal amplifier circuit 32 is connected to the magnetic induction circuit 30, amplifies the induced electric signal from the magnetic induction circuit 30, and transmits the amplified signal to the coil control circuit 36.

In this embodiment, the signal amplifying circuit 32 is mainly composed of an operational amplifier and the like, and it mainly amplifies the signal of the magnetic induction circuit 30 and the like in stages so that the magnetic field can be generated by the amplified induced electrical signal in the following. The signal amplification circuit 32 can amplify the signal, so that the subsequent operation is more convenient and accurate.

Further, as shown in fig. 3 and 5, the coil control circuit 36 includes a resistance device 362. The resistance of the resistance device 362 can be adjusted.

In this embodiment, the coil control circuit 36 includes a resistance device 362, such as a sliding resistor, and the magnetic field of the electromagnetic induction coil 34 can be changed by adjusting the resistance value of the resistance device 362, so as to adjust the magnitude of the current on the electromagnetic induction coil 34.

In any of the above embodiments, the magnetic induction circuit 30, the signal amplification circuit 32, and the coil control circuit 36 are provided on the circuit substrate 38. Further, the circuit substrate 38 is provided with a first port connected to the magnetic induction circuit 30. The electromagnetic coil 34 is electrically connected to the magnetic induction circuitry 30 through the first port.

In this embodiment, the circuit substrate 38 is used for mounting on the motor assembly 2 and the like, and the circuit substrate 38 serves as a base for the magnetic induction circuit 30 and the signal amplification circuit 32, and is used for carrying and mounting various components such as the magnetic induction circuit 30 and the signal amplification circuit 32. Meanwhile, a port is provided on the circuit substrate 38 for connecting input and output of power or signals. Specifically, in order to transmit the output signal of the magnetic induction circuit 30 or the signal amplification circuit 32 to the electromagnetic induction coil 34, a first port may be provided on the circuit substrate 38 to output an induced electric signal. The electromagnetic induction coil 34 may be connected to the first port via a wire 39 or the like, and then electrically connected to the magnetic induction circuit 30 or the signal amplification circuit 32 based on the first port.

Further, a mounting structure adapted to the magnetism generating device is provided on the circuit substrate 38, and the circuit substrate 38 can be mounted on the magnetism generating device via the mounting structure. The mounting structure can fix the position of the magnetic generator relative to the motor assembly 2, thereby more accurately detecting the magnetic field change of the magnetic generator such as the motor assembly 2.

Further, as shown in fig. 8, 9 and 10, the mounting structure is a mounting hole or mounting notch 382 provided on the circuit substrate 38. The mounting hole or the mounting notch 382 is adapted to the shape of the magnetic generating device such as the motor module 2 so that the circuit board 38 can be mounted on the magnetic generating device such as the motor module 2.

Further, the circuit board 38 is flat and semicircular.

Further, as shown in fig. 7, 8 and 9, the magnetic induction circuit 30 and the circuit substrate 38 are of an integral structure, that is, the magnetic induction circuit 30 is mounted with the circuit substrate 38, that is, the magnetic induction circuit 30 is located outside the detection of the rotor magnetic poles of the detection motor and outside the detection of the electronic control board 1.

Further, as shown in fig. 7 to 9, a plurality of magnetic induction circuits 30 are mounted on the same circuit substrate 38.

Further, the electric control board 1 comprises a plurality of jointed boards, each jointed board is provided with a plurality of magnetic detection units, and the magnetic detection units on the same jointed board are correspondingly provided with an electromagnetic induction coil 34 and a magnetic induction circuit 30; a plurality of magnetic induction circuits 30 provided corresponding to the same jointed board are mounted on the same substrate. That is, one panel is provided with a set of magnetic conduction devices 3, and a set of magnetic conduction devices 3 includes a plurality of electromagnetic induction coils 34, a plurality of magnetic induction circuits 30, a plurality of coil control circuits 36 and a substrate. Generally, a panel is provided with a set of magnetically conductive means 3. A set of magnetic conducting means 3 comprises three electromagnetic induction coils 34 and three magnetic induction circuits 30, three coil control circuits 36 and a substrate.

As shown in fig. 2, 6 to 10, an embodiment of the second aspect of the present invention provides an electronic control board testing system, including: a magnetic generating device, an electric control board 1 to be tested and the magnetic conducting device 3 provided by any embodiment of the first aspect. The electric control board 1 is provided with a magnetic detection unit, and the electric control board 1 can control the magnetic generation device to generate a magnetic field based on detection data of the magnetic detection unit. The magnetic induction circuit 30 of the magnetic conduction device 3 is used for inducing the magnetic field variation generated by the magnetic generation device and converting the magnetic field variation into an induced electric signal for outputting, and the electromagnetic induction coil 34 is used for converting the induced electric signal into a magnetic field for the detection of the magnetic detection unit. Further, the electronic control board test system further comprises: and the test control system is connected with the electric control board 1 to control the work of the electric control board 1, and obtains the operation data of the magnetic generation device from the electric control board 1 as the test data of the electric control board 1. The magnetic conduction device 3 can transfer the magnetic field change generated by the magnetic generation device such as the motor assembly 2 to the electromagnetic induction coil 34, when the electric control board 1 is tested, the electric control board 1 detects the magnetic field change generated by the electromagnetic induction coil 34 through the magnetic detection unit, and uses the detected magnetic field change as the magnetic field change generated by the magnetic generation device, so that the magnetic field change generated by the magnetic generation device can be acquired without installing the electric control board 1 on the magnetic generation device, and the work of the magnetic generation device such as the motor assembly 2 is controlled. Thereafter, the operation data of the magnetic generating devices such as the motor assembly 2 acquired by the electric control board 1 can be used as the test data of the electric control board 1, and whether the electric control board 1 meets the requirements or not can be judged through the data.

The electric control board testing system provided by the embodiment of the invention comprises a magnetic generating device, an electric control board 1 to be tested and a magnetic conduction device 3 for magnetic conduction. The magnetic conduction device 3 is used for transmitting the magnetic field change generated by the magnetic generation device (such as the motor component 2) to the magnetic detection unit (such as a hall sensor) on the electric control board 1, so that the electric control board 1 can control the magnetic generation device, such as the motor component 2, and the like to work based on the data fed back by the magnetic detection unit such as the hall sensor, and the like, and then can acquire the running data of the magnetic generation device, such as the motor component 2, and the like under the electric control board 1, and then can determine whether the work of the electric control board 1 is normal based on the analysis of the running data, so that the test (such as the FCT test) of the electric control board 1 can be completed. Specifically, the magnetic conduction device 3 includes a circuit board 38, a magnetic induction circuit 30, and an electromagnetic induction coil 34. Wherein, the magnetic induction circuit 30 is installed corresponding to the magnetic generating device such as the motor through the circuit substrate 38, for example, when in use, the magnetic induction circuit 30 can be directly installed above the motor component 2 through the circuit substrate 38, so as to be able to sense the magnetic field change generated by the magnetic generating device such as the motor component 2, and after the magnetic induction circuit 30 detects the magnetic field change, the magnetic field change can be converted into an induced electric signal according to the principle of magnetic generation, and then the induced electric signal can be input to the electromagnetic induction coil 34, so that the electromagnetic induction coil 34 can generate a magnetic field based on the induced electric signal, so as to convert the magnetic field change on the magnetic generating device into the magnetic field change on the electromagnetic induction coil 34, so that during the test, the electric control board 1 only needs to detect the magnetic field and the change on the electromagnetic induction coil 34 through the magnetic detecting unit such as the hall sensor, and then can realize the feedback adjustment on the motor component 2, therefore, the operation environment of the electric control board 1 can be simulated, the electric control board 1 can work in various design states, and then the output signals of the electric control board 1 in the test environment, such as the operation data of a magnetic generation device such as a motor, can be monitored to judge whether the electric control board 1 works normally, so that the FCT test of the electric control board 1 can be completed. Through the magnetic conduction device 3 provided by the application, because the magnetic field change of the motor component 2 and the like can be transferred to the electromagnetic induction coil 34, the electric control board 1 only needs to detect the magnetic field change on the electromagnetic induction coil 34 and does not need to directly detect the magnetic field change of the magnetic generation device such as the motor component 2 and the like, so that in the actual test process, only the magnetic induction circuit 30 of the magnetic conduction device 3 needs to be installed corresponding to the motor component 2 and the like, and then the electromagnetic induction coil 34 is installed corresponding to the magnetic detection unit of the electric control board 1, so that the electric control board 1 does not need to be directly installed on the magnetic generation device such as the motor component 2, the problem that the size between the splicing plates of the electric control board 1 is not matched with the motor volume, and each Hall element on the splicing plates can not perform feedback detection on the magnetic pole field of the motor rotor is solved, so that in the actual process, the electric control board 1 does not need to be split into a plurality of single boards for testing, so that the whole testing process of the electric control board 1 is simplified, the testing efficiency of the electric control board 1 is improved, the testing cost of the electric control board 1 is reduced, the production process of the electric control board 1 is more continuous, the production efficiency of the electric control board 1 is improved, and the production cost of the electric control board 1 is reduced. Meanwhile, since the electronic control board testing system includes the magnetic conduction device 3 provided in the embodiment of the first aspect, the electronic control board testing system has all the beneficial effects of the magnetic conduction device 3 provided in any embodiment of the first aspect, and details are not repeated herein.

The test control system is mainly used for completing test work, for example, generating a test report of the electric control board 1 based on test data, or issuing different instructions to the electric control board 1 based on the requirement to be tested so as to simulate different working environments and the like. The test control system can comprise a display screen to display the running data of the motor assembly 2 and the like, so that whether the motor assembly 2 works normally or not can be conveniently judged, and whether the performance of the electric control board 1 is normal or not can be determined.

In any of the above embodiments, the magnetic detection unit comprises a hall sensor. That is, the hall sensor is arranged on the electric control board 1 to feed back the magnetic field generated by the motor and the like, so that the electric control board 1 can conveniently carry out feedback control on the work of the motor component 2 and the like.

Further, the electric control plate 1 is a splice plate, the number of the splice plates is consistent with that of the magnetic conduction devices 3, and a set of magnetic conduction devices 3 is correspondingly arranged for each splice plate to conduct the magnetic field. Thus, different splicing plates of the electric control plate 1 can be tested simultaneously. Of course, different splice plates can also share one set of magnetic conduction device 3 for testing in sequence.

As shown in fig. 11, an embodiment of a third aspect of the present invention provides an electronic control board testing method, which is used in the electronic control board testing system provided in any one of the technical solutions of the second aspect, to test an electronic control board, where a magnetic detection unit is disposed on an electronic control board 1, and the electronic control board testing method includes:

s110, the magnetic induction circuit induces the magnetic field change generated by the magnetic generation device and converts the magnetic field change into an induced electrical signal;

s112, the electromagnetic induction coil generates a magnetic field based on the induction electric signal;

s114, detecting a magnetic field generated by the electromagnetic induction coil by the magnetic detection unit;

s116, the electric control board controls the work of the magnetic generation device based on the detection data of the magnetic detection unit;

and S118, the test control system acquires the running data of the magnetic generation device in the test process through the electric control board as the test data of the electric control board.

The magnetic conduction device 3 can transfer the magnetic field change generated by the magnetic generation device such as the motor assembly 2 to the electromagnetic induction coil 34, when the electric control board 1 is tested, the electric control board 1 detects the magnetic field change generated by the electromagnetic induction coil 34 through the magnetic detection unit, and uses the detected magnetic field change as the magnetic field change generated by the magnetic generation device, so that the magnetic field change generated by the magnetic generation device can be acquired without installing the electric control board 1 on the magnetic generation device, and the work of the magnetic generation device such as the motor assembly 2 is controlled. Thereafter, the operation data of the magnetic generating devices such as the motor assembly 2 acquired by the electric control board 1 can be used as the test data of the electric control board 1, and whether the electric control board 1 meets the requirements or not can be judged through the data.

The electric control board testing method provided by the invention is used for an electric control board testing system. The electric control board testing system comprises a magnetic generating device, an electric control board 1 to be tested and a magnetic conduction device 3. The magnetic conduction device 3 is used for transmitting the magnetic field change generated by the magnetic generation device (such as the motor component 2) to the magnetic detection unit (such as a hall sensor) on the electric control board 1, so that the electric control board 1 can control the magnetic generation device, such as the motor component 2, and the like to work based on the data fed back by the magnetic detection unit such as the hall sensor, and the like, and then can acquire the running data of the magnetic generation device, such as the motor component 2, and the like under the electric control board 1, and then can determine whether the work of the electric control board 1 is normal based on the analysis of the running data, so that the test (such as the FCT test) of the electric control board 1 can be completed. Specifically, the magnetic conduction device 3 includes a circuit board 38, a magnetic induction circuit 30, and an electromagnetic induction coil 34. Wherein, the magnetic induction circuit 30 is installed corresponding to the magnetic generating device such as the motor through the circuit substrate 38, for example, when in use, the magnetic induction circuit 30 can be directly installed above the motor component 2 through the circuit substrate 38, so as to be able to sense the magnetic field change generated by the magnetic generating device such as the motor component 2, and after the magnetic induction circuit 30 detects the magnetic field change, the magnetic field change can be converted into an induced electric signal according to the principle of magnetic generation, and then the induced electric signal can be input to the electromagnetic induction coil 34, so that the electromagnetic induction coil 34 can generate a magnetic field based on the induced electric signal, so as to convert the magnetic field change on the magnetic generating device into the magnetic field change on the electromagnetic induction coil 34, so that during the test, the electric control board 1 only needs to detect the magnetic field and the change on the electromagnetic induction coil 34 through the magnetic detecting unit such as the hall sensor, and then can realize the feedback adjustment on the motor component 2, therefore, the operation environment of the electric control board 1 can be simulated, the electric control board 1 can work in various design states, and then the output signals of the electric control board 1 in the test environment, such as the operation data of a magnetic generation device such as a motor, can be monitored through the test control system to judge whether the electric control board 1 works normally, so that the FCT test of the electric control board 1 can be completed. Through the magnetic conduction device 3 provided by the application, because the magnetic field change of the motor component 2 and the like can be transferred to the electromagnetic induction coil 34, the electric control board 1 only needs to detect the magnetic field change on the electromagnetic induction coil 34 and does not need to directly detect the magnetic field change of the magnetic generation device such as the motor component 2 and the like, so that in the actual test process, only the magnetic induction circuit 30 of the magnetic conduction device 3 needs to be installed corresponding to the motor component 2 and the like, and then the electromagnetic induction coil 34 is installed corresponding to the magnetic detection unit of the electric control board 1, so that the electric control board 1 does not need to be directly installed on the magnetic generation device such as the motor component 2, the problem that the size between the splicing plates of the electric control board 1 is not matched with the motor volume, and each Hall element on the splicing plates can not perform feedback detection on the magnetic pole field of the motor rotor is solved, so that in the actual process, the electric control board 1 does not need to be split into a plurality of single boards for testing, so that the whole testing process of the electric control board 1 is simplified, the testing efficiency of the electric control board 1 is improved, the testing cost of the electric control board 1 is reduced, the production process of the electric control board 1 is more continuous, the production efficiency of the electric control board 1 is improved, and the production cost of the electric control board 1 is reduced.

Further, the magnetic conduction device 3 used in the electric control board testing method is the magnetic conduction device 3 provided in any one of the embodiments of the first aspect.

In the description of the present specification, the terms "connect", "mount", "fix", and the like are to be understood in a broad sense, for example, "connect" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present specification, it is to be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or unit must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a magnetic conduction device which characterized in that for automatically controlled board test, be provided with magnetism detecting element on the automatically controlled board, magnetic conduction device includes:

a circuit substrate for mounting on the magnetism generating device;

the magnetic induction circuit is arranged on the circuit substrate and used for inducing the change of the magnetic field generated by the magnetic generation device and generating an induced electric signal under the condition that the magnetic field is changed;

the electromagnetic induction coil is arranged corresponding to the magnetic detection unit, is electrically connected with the magnetic induction circuit and can generate a magnetic field based on the induced electric signals;

the magnetic conduction device can transfer the magnetic field change generated by the magnetic generation device to the electromagnetic induction coil, and when the electric control board is used for testing, the electric control board detects the magnetic field change generated by the electromagnetic induction coil through the magnetic detection unit and takes the detected magnetic field change as the magnetic field change generated by the magnetic generation device.

2. The magnetic conduction device of claim 1, further comprising:

and the coil control circuit is connected with the electromagnetic induction coil and used for adjusting the size of the magnetic field generated by the electromagnetic induction coil according to the induction electric signal.

3. The magnetic conduction device according to claim 2, wherein the coil control circuit comprises a resistive device, the resistance of which is adjustable.

4. The magnetic conduction device of claim 2, further comprising:

and the signal amplification circuit is connected with the magnetic induction circuit, amplifies the induced electrical signals from the magnetic induction circuit and transmits the amplified induced electrical signals to the coil control circuit.

5. The magnetic conduction device according to claim 4, wherein the magnetic induction circuit, the signal amplification circuit, and the coil control circuit are provided on the circuit substrate.

6. The magnetic conduction device according to claim 5, wherein the circuit substrate is provided with a first port, and the electromagnetic coil is electrically connected to the magnetic induction circuit through the first port.

7. The magnetic conduction device of claim 6, further comprising:

a wire for connecting the first port and the electromagnetic induction coil so that the magnetic induction circuit and the electromagnetic induction coil are electrically connected.

8. The magnetic conduction device of claim 7, wherein the circuit substrate has a mounting structure disposed thereon.

9. The magnetic conduction device of claim 8, wherein the mounting structure is a mounting hole or a mounting notch provided on the circuit substrate.

10. The magnetic conduction device according to any of claims 1 to 9, wherein the magnetic induction circuitry comprises a magnetic induction element for detecting changes in the magnetic field of the environment in which it is located.

11. The magnetic conduction device according to any one of claims 1 to 9, wherein the number of the magnetic induction circuits and the number of the electromagnetic induction coils are plural, and the plural electromagnetic induction coils and the plural magnetic induction circuits are provided in one-to-one correspondence; the plurality of magnetic induction circuits are mounted on the same circuit substrate.

12. An electronic control board test system, comprising:

a magnetic generating device for generating a varying magnetic field;

the magnetic field generating device comprises an electric control board to be tested, wherein a magnetic detection unit is arranged on the electric control board, and the electric control board can control the magnetic generating device to generate a magnetic field based on detection data of the magnetic detection unit;

the magnetic conduction device according to any one of claims 1 to 11, wherein a magnetic induction circuit of the magnetic conduction device is provided in correspondence with the magnetic generation device, and an electromagnetic induction coil of the magnetic conduction device is provided in correspondence with the magnetic detection unit, and the magnetic detection unit is capable of detecting a magnetic field generated by the electromagnetic induction coil;

the test control system is connected with the electric control board to control the work of the electric control board, and obtains the operation data of the magnetic generation device from the electric control board as the test data of the electric control board;

13. The electronically controlled board testing system of claim 12, wherein the magnetic detection unit comprises a hall sensor.

14. The electronic control board testing system according to claim 12 or 13, wherein the magnetic generating device is a motor assembly.

15. An electronic control board test method for the electronic control board test system according to any one of claims 12 to 14, the electronic control board test method comprising:

the magnetic induction circuit induces the magnetic field change generated by the magnetic generation device and converts the magnetic field change into an induced electrical signal;

the electromagnetic induction coil generates a magnetic field based on the induced electrical signal;

the magnetic detection unit detects a magnetic field generated by the electromagnetic induction coil;

the electric control board controls the work of the magnetic generation device based on the detection data of the magnetic detection unit;

the test control system acquires the operation data of the magnetic generation device through the electric control board as the test data of the electric control board;