A charging pile testing device

Abstract

The present invention relates to a charging pile test device, comprising: a housing (1); a sensor receiving simulation unit (2), fixed inside the housing (1); a charging function simulation unit (3), slidably arranged on the front of the housing (1), so that the relative distance between the charging function simulation unit (3) and the sensor receiving simulation unit (2) varies within a certain range, wherein the charging function simulation unit (3) comprises: a signal transmitting unit (31), used to transmit near-field and / or far-field signals; a main control unit (32), used to control the signal transmitting unit (31) to transmit near-field and / or far-field signals. By simulating the behavior of a sweeping robot detecting and approaching a charging pile when charging, the performance of the sweeping robot automatically finding a charging pile can be simulated through a test device, thereby saving test space, improving test efficiency, and providing a convenient test environment for developing sweeping robots and charging piles.

Description

Technical Field

[0001] The present invention belongs to the technical field of charging equipment, and in particular relates to a charging pile testing device. Background Art

[0002] When the floor cleaning equipment (such as a sweeping robot) is low on power, it needs to automatically return to the charging station for charging. The sweeping robot uses its own sensor to connect with the signal transmitter on the charging station to determine the location and distance of the charging station and realize automatic charging.

[0003] When testing the signal transmitter and other functions of the charging pile, the current solution is mostly manual detection. On the one hand, it is difficult to confirm the bad condition 100% by manual judgment, and it is easy to misjudge. On the other hand, the test instrument occupies a large space, which is not conducive to operation. In addition, manual detection is inefficient and not conducive to production and manufacturing detection. The stability and reliability of the test cannot be guaranteed. Therefore, it is necessary to develop a structural device that can perform standardized testing. Summary of the invention

[0004] An embodiment of the present invention provides a charging pile testing device to solve one of the above technical problems, which is specifically as follows.

[0005] Based on the implementation manner of the present invention, the embodiment of the present invention provides a charging pile testing device, including:

[0006] case;

[0007] A sensor receiving simulation unit is fixed inside the housing;

[0008] A charging function simulation unit is slidably disposed on the front side of the housing so that the relative distance between the charging function simulation unit and the sensor receiving simulation unit varies within a certain range, and the charging function simulation unit includes:

[0009] A signal transmitting unit, used for transmitting near-field and / or far-field signals;

[0010] The main control unit is used to control the signal transmitting unit to transmit near-field and / or far-field signals.

[0011] Optionally, the sensor receiving simulation unit includes:

[0012] A positioning plate, fixed on the bottom surface of the shell;

[0013] At least one far-field signal receiving module, fixed to a side of the positioning plate away from the charging function simulation unit, for receiving a far-field signal;

[0014] At least one near-field signal receiving module is fixed to a side of the positioning plate close to the charging function simulation unit and is used to receive near-field signals.

[0015] Optionally, the sensor receiving simulation unit includes four near-field signal receiving modules, and the four near-field signal receiving modules receive the near-field signal emitted by the signal transmitting unit from different angles respectively.

[0016] Optionally, the four different angles are 45°, 75°, 105° and 135° respectively.

[0017] Optionally, the sensor receiving simulation unit includes three far-field signal receiving modules, and the three far-field signal receiving modules receive the far-field signal emitted by the signal transmitting unit from different angles respectively.

[0018] Optionally, a sliding component is also included, including:

[0019] A slide rail fixed to the bottom surface of the housing;

[0020] The slider is fixed to the charging function simulation unit and can slide along the slide rail so that the charging function simulation unit moves relative to the sensor receiving simulation unit.

[0021] Optionally, the length of the slide rail is 30-60 cm.

[0022] Optionally, the sensor receiving simulation unit further includes:

[0023] The pile signal device is fixed on the positioning plate, and gives a pile signal when the sensor receiving simulation unit matches the charging function simulation unit.

[0024] Optionally, the charging function simulation unit further includes:

[0025] A bracket, used for carrying the control unit and the signal emitting unit and the signal sending unit;

[0026] The circuit board is located on the bracket and is electrically connected to the signal emitting unit, the signal sending unit and the control unit.

[0027] Optionally, the charging function simulation unit further includes:

[0028] The hydraulic rod is located at the back of the bracket and pushes the charging function simulation unit to slide under the control of the control unit.

[0029] The above solution of the embodiment of the present invention has at least the following beneficial effects:

[0030] The present invention discloses a complete test device, which simulates the detection signal reception of the charging pile by a fixed signal receiving device, and places a signal transmitting device on a mobile platform, and simulates the behavior of the sweeping robot detecting and approaching the charging pile when charging by moving the signal transmitting device. Thus, the performance of the sweeping robot automatically finding the charging pile can be simulated by a test device, which saves the test space, improves the test efficiency, and provides a convenient test environment for the development of sweeping robots and charging piles. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 is a schematic diagram of the overall structure of the charging pile testing device according to an embodiment of the present invention;

[0033] Figure 2 It is a partial structural schematic diagram of the charging pile testing device according to an embodiment of the present invention;

[0034] Figure 3 It is a partial structural diagram of the charging pile testing device described in an embodiment of the present invention. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0037] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0038] It should be understood that although the terms first, second, third, etc. may be used to describe ... in the embodiments of the present application, these ... should not be limited to these terms. These terms are only used to distinguish .... For example, without departing from the scope of the embodiments of the present application, the first ... may also be referred to as the second ..., and similarly, the second ... may also be referred to as the first ....

[0039] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0040] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0041] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Figure 1 is a schematic diagram of the overall structure of the charging pile testing device according to an embodiment of the present invention; Figure 2 2. It is a bottom view of the structure of the mobile charging function simulation unit of the charging pile test device according to the embodiment of the present invention; Figure 3 It is a side view of the structure of the mobile charging function simulation unit of the charging pile testing device according to an embodiment of the present invention.

[0042] like Figure 1 As shown, the present invention discloses a charging pile testing device, which simulates the charging pile through a fixed sensor receiving simulation unit 2 (with a signal receiving device), places a charging function simulation unit 3 (simulating a sweeping robot) on a mobile platform, and moves the charging function simulation unit 3 to make the sensor receiving simulation unit 2 and the charging function simulation unit 3 move relative to each other, which equivalently simulates the behavior of the sweeping robot detecting and approaching the charging pile when charging.

[0043] The charging pile test device specifically includes: a housing 1, a sensor receiving simulation unit 2 and a charging function simulation unit 3. The sensor receiving simulation unit 2 is fixed inside the housing 1; the charging function simulation unit 3 is slidably arranged on the front of the housing 1, so that the relative distance between the charging function simulation unit 3 and the sensor receiving simulation unit 2 varies within a certain range, wherein the charging function simulation unit 3 includes: a signal transmitting unit 31 and a main control unit 32, the signal transmitting unit 31 is used to receive near-field and / or far-field signals, the main control unit 32 user controls the signal transmitting unit 31 to transmit near-field and / or far-field signals, and the main control unit 32 may include a power supply and related control circuits (for the infrared light source transmitting unit, the corresponding control circuit may adopt a conventional circuit setting).

[0044] like Figure 1 As shown, the shell 1 can be a cube or a rectangular parallelepiped structure, including six surfaces: the top surface, the bottom surface, the front surface, the back surface, the left surface and the right surface. The six surfaces form a closed space, forming a closed test device. The top surface can be combined with the shell 1 by screws or a snap-fit ​​structure, and the top surface includes at least one handle, through which the top surface can be opened, which is convenient for operation during the assembly test of the internal circuit and structure. The bottom surface includes a plurality of rollers or legs, which can support the test device or facilitate movement when the test device is placed in a certain position. The legs can be set to a height spirally adjustable structure, which is convenient for adjusting the distance of the test device from the ground according to the needs of the test environment. At least one handle is provided on the left and right sides respectively, and the handle is used for convenient operation during the movement of the test device.

[0045] There is at least one through hole at the back of the shell for transmitting cables to the inside of the shell, such as electric wires or signal lines. The front of the shell includes a "start" button and a "stop" button. The "start" button and the "stop" button are distributed on the side positions of the front of the shell. When the "start" button is manually pressed, the test device enters the test state. At any time during the test process, the "stop" button is manually pressed to stop the test. There is an opening in the central position of the front. The charging function simulation unit 3 is retracted in a drawer manner through the opening. When the charging function simulation unit 3 is extended, the charging function simulation unit 3 is completely exposed to the outside of the shell. When the charging function simulation unit 3 is retracted, the end face bracket is flush with the opening in front of the shell, ensuring the integrity of the shell shape of the entire test device and avoiding damage to the internal components of the test device.

[0046] The structure of the shell is not limited to a cube or a rectangular parallelepiped structure, and can be a structure of any shape, such as a cylindrical shape, etc. The shell material is usually preferably metal or hard plastic.

[0047] The internal structure of the shell can be divided into two parts, which are separated by a partition. The front part is the main box body, which accommodates the sensor receiving simulation unit 2 and the charging function simulation unit 3. The rear part is the auxiliary box body, which is used to accommodate, for example, power supply, transformer equipment, etc., and also includes a signal sending unit 25, which is used to send the detection signal to an external monitor.

[0048] Based on the embodiment of the present invention, the sensor receiving simulation unit 2 includes: a positioning plate 21, at least one far-field signal receiving module 22, at least one near-field signal receiving module 23, and a pile signal device 24. The far-field signal receiving module 22, at least one near-field signal receiving module 23, and the pile signal device 24 are all electrically connected to a signal sending unit 25, and the detection signal is sent to an external monitor through the signal sending unit 25.

[0049] The positioning plate 21 is fixed to the bottom surface of the housing 1. The positioning plate 21 includes a semicircular annular plane, and a support arm extends downward from the rear of the positioning plate 21. The above structure enables the positioning plate 21 to form a semi-cavity with an opening in the front for accommodating the guide rail assembly, etc. The structure of the positioning plate is not limited to a semicircular structure, and can be a square or other shaped structure.

[0050] like Figure 1 As shown, at least one far-field signal receiving module 22 is fixed on the side of the positioning plate 21 away from the charging function simulation unit 3, and is used to receive far-field signals. As one of the embodiments, the sensor receiving simulation unit 2 includes three far-field signal receiving modules 22, and the three far-field signal receiving modules 22 are evenly distributed with the sliding axis as the center, and the three far-field signal receiving modules 22 receive far-field signals from different angles, so that when the charging function simulation unit 3 is sliding, the signal transmitting units 31 at different positions have different directions and angles of injection, so that the simulated far-field signal is more accurate. Among them, the far-field signal receiving module 22 can be an infrared detector, an ultrasonic signal detector, etc., and the type of the far-field signal receiving module is not limited, but it needs to be matched with the signal transmitting unit 31. For example, in this embodiment, an infrared detector is used as the far-field signal receiving module, and the signal transmitting unit 31 includes an infrared light source connected to a power supply and a control circuit (not shown) to transmit a far-field infrared signal, that is, the signal transmitting unit 31 is an infrared signal transmitter, which can accurately transmit infrared signals of different intensities. The three infrared receiving signals are respectively located near the positions of 45°, 90° and 135°, and are focused on the infrared signal detection device. Specifically, the specific structure of the infrared signal transmitting source and the infrared signal detection device is not introduced here, and any existing infrared signal transmitting source and infrared signal detection device can be used in this embodiment.

[0051] In a normal test process, the test distance of the far-field signal source is about 4m. Due to the limitation of the test device structure itself, it is necessary to proportionally control the power of the far-field signal source to simulate the effect of a distance of 4m in actual application. In the test device, the travel of the charging function simulation unit 3 and the sensor receiving simulation unit 2 is generally in the range of 30-60cm. According to the experimental data, the power of the far-field signal source can be proportionally reduced. For example, the power of the signal source of the far-field signal receiving module 22 can be made about 40% of the signal power of the sweeping robot in actual application.

[0052] In order to facilitate the description of directions, the direction perpendicular to the moving direction of the charging function simulation unit 3 may be defined as the horizontal X direction, and the moving direction of the charging function simulation unit 3 may be defined as the Y direction.

[0053] According to the test device of this embodiment, it also includes at least one near-field signal receiving module 23, which is fixed on the side of the positioning plate 21 close to the charging function simulation unit 3, and is used to receive near-field signals. The near-field signal receiving module 23 is slightly closer to the signal transmitting unit 31 than the far-field signal receiving module 22, which is convenient for the mobile operation of the test device. Optionally, the sensor receiving simulation unit 2 includes four near-field signal receiving modules 23, and the four near-field signal receiving modules 23 receive near-field signals from different angles. The four near-field signal receiving modules 23 are evenly distributed with the sliding axis as the center, and the four near-field signal receiving modules 23 receive near-field signals from different angles, so that when the charging function simulation unit 3 is sliding, the signal receiving units at different positions have different directions and angles of injection, simulating the moving sweeping robot to send infrared signals to different directions to accurately locate the position of the charging pile when searching for the charging pile, so that the simulated far-field signal is more accurate. Among them, the near-field signal receiving module 23 can be an infrared detector, an ultrasonic signal detector, etc. There is no limitation on the type of the near-field signal receiving module, but it needs to be matched with the signal transmitting unit 31. For example, in this embodiment, an infrared detector is used as the near-field signal receiving module, and the infrared light source is connected to the power supply and control circuit (not shown) to emit a far-field infrared signal. Then the signal receiving unit is an infrared signal detector, which can accurately detect infrared signals of different intensities.

[0054] More optionally, the four different angles are respectively near 45°, 75°, 105° and 135°, and are concentrated toward the infrared signal transmitting device 31 to simulate the scene that the sweeping robot receives signals within a certain angle range to the front and obtains the location of the charging pile when it needs to be charged. Specifically, the specific structure of the infrared signal transmitting source and the infrared signal detecting device is not introduced here, and any existing infrared signal transmitting source and infrared signal detecting device can be used in this embodiment.

[0055] In a normal test process, the test distance of the near-field signal source is about 1m. Due to the limitation of the test device structure itself, it is necessary to proportionally control the power of the near-field signal source to simulate the effect of a distance of 1m in actual application. In the test device, the travel of the charging function simulation unit 3 and the sensor receiving simulation unit 2 is generally in the range of 30-60cm. According to the experimental data, the power of the near-field signal source can be proportionally reduced. For example, the power of the signal source of the signal transmitting unit 31 can be made 20% of the signal power of the sweeping robot in actual application.

[0056] The charging signal device 24 is used to give a charging signal when the sensor receiving simulation unit 2 matches the charging function simulation unit 3, indicating that charging is ready.

[0057] In one embodiment, the pile signal device 24 is fixed on the positioning plate 21 and can be a light source detector. The distance between the pile signal device 24 and the charging function simulation unit 3 is determined by receiving the detection signal. When the distance is within a predetermined range (for example, 10 cm), it indicates that the sensor receiving simulation unit 2 is consistent with the charging function simulation unit 3.

[0058] As another embodiment, the pile signal device 24 can be a gravity sensor, which is arranged at the bottom plate position. When the sensor receiving simulation unit 2 matches the charging function simulation unit 3, the gravity sensor gives a signal, indicating that the sensor receiving simulation unit 2 and the charging function simulation unit 3 are in a connected charging state.

[0059] In the solution of this embodiment, Figure 2 As shown, the charging function simulation unit 3 includes: a signal transmitting unit 31, a main control unit 32, a T-shaped bracket 33, a circuit board 34, and a hydraulic rod 35, wherein the signal transmitting unit 31 is used to transmit near-field and / or far-field signals; the main control unit 32 is used to control the signal transmitting unit 31 to transmit near-field and / or far-field signals; the T-shaped bracket 33 is used to carry a control unit (not shown) and the signal transmitting unit 31, the main control unit 32, the circuit board 34 and the hydraulic rod 35; the circuit board 34 is located on the T-shaped bracket 33, is electrically connected to the signal transmitting unit 31 and the main control unit 32, and is used to process the signals of the signal transmitting unit 31 and the main control unit 32; the hydraulic rod 35 is located on the back of the T-shaped bracket 33, and pushes the charging function simulation unit 3 to slide under the control of the main control unit 32.

[0060] Specifically, Figure 3As shown, the signal transmitting unit 31 matches the functions of the far-field signal receiving module 22 and the near-field signal receiving module 23. In this embodiment, the signal transmitting unit 31 is an infrared signal transmitting source, which can transmit far-field / near-field infrared signals at different powers. The signal transmitting unit 31 is located at the front end of the T-shaped bracket 33, which is convenient for transmitting signals. The detector matched therewith can be an infrared detector, for example, a passive infrared detector can be used. The core component of the passive infrared detector is a pyroelectric sensor, and its main body is a thin film ferroelectric material. The material is polarized under the action of an external electric field. When the external electric field is removed, the polarization state is still maintained, which is called spontaneous polarization. The spontaneous polarization intensity and temperature have a Curie point temperature. At the Curie point temperature, a pyroelectric sensor is manufactured according to the relationship between polarization intensity and temperature. When an infrared signal of a certain intensity is applied to the polarized ferroelectric material, the thin skin temperature rises, the polarization intensity decreases, and the surface polarization charge decreases. This part of the charge is converted into an output voltage through an amplifier. If the signal of the same intensity continues to irradiate, the temperature of the ferroelectric material stabilizes at a certain point, and no charge is released, that is, there is no voltage output. In a digital passive infrared detector, the weak electrical signal output by the pyroelectric sensor is input into a microprocessor, and the electrical signal is converted, amplified, and filtered before being output to an external monitor, which can be a display, alarm device, or other equipment.

[0061] After the far-field signal receiving module 22 / near-field signal receiving module 23 receives the signal from the far-field / near-field signal source, it will send the received signal through the signal sending unit 25, and the signal sending unit 25 will send the signal to an external monitor, such as an external display, alarm device and other equipment, via wired or wireless means.

[0062] The structure of the T-shaped bracket 33 can also be any other structure, such as a hollow structure. The T-shaped bracket includes a horizontal support plate and a vertical panel. The support plate is used to carry the control unit (not shown) and the signal transmitting unit 31, the main control unit 32, the circuit board 34 and the hydraulic rod 35, etc. When the T-shaped bracket 33 slides into the housing 1, the panel just fits in with the front of the housing 1 to maintain the overall consistency of the test device. The T-shaped bracket 33 is usually made of metal material, and can also be made of insulating material, such as hard plastic.

[0063] The circuit board 34 is located on the T-shaped bracket 33; during the test, the circuit board 34 will read the output voltage of the charging pile when it is unloaded, which is usually 4.0-5.0V. During the test, once the simulated sweeping robot simulates entering the pile state, the circuit board 34 will simulate the sweeping machine load 7.8k resistor connected to the two springs of the charging pile, and simulate the connection of a large current. At this time, the output voltage value of the charging pile is usually 19.0-20.5V.

[0064] The charging function simulation unit 3 further includes a hydraulic rod 35 , which is located on the back of the support plate of the T-shaped bracket 33 . The hydraulic rod 35 pushes the charging function simulation unit 3 to slide under the control of the main control unit 32 .

[0065] In this embodiment, the charging pile test device also includes a sliding component 4, which is used to make the charging function simulation unit 3 move relative to the sensor receiving simulation unit 2 to simulate a moving sweeping robot and a fixed charging pile. Specifically, the sliding component 4 includes: a slide rail 41, which is fixed to the bottom surface of the shell 1; a slider 42, which is fixed to the charging function simulation unit 3 and can slide along the slide rail 41, so that the charging function simulation unit 3 moves relative to the sensor receiving simulation unit 2. The length of the slide rail 41 is 30-60cm, and the slide rail 41 is fixed to the inner bottom surface of the shell 1 by screws. Two symmetrical sliders 42 are respectively arranged on the bottom surface of the support plate of the T-shaped bracket 33. The slider 42 is provided with a groove, and the slide rail slides in the groove.

[0066] The test process of this embodiment is as follows: pull the charging function simulation unit 3 out of the housing 1 to the maximum position, start the start test button, and the charging function simulation unit 3 slides automatically / manually along the guide rail toward the housing. At this time, the control unit controls the signal transmitting unit 31 to transmit near-field / far-field signals in different directions. When the far-field signal receiving module 23 receives the far-field signal, it means that the charging pile position has been detected, and the signal transmitting unit 25 transmits an indication of receiving the far-field signal. The charging function simulation unit 3 continues to slide along the housing direction. When the near-field signal receiving module 22 receives the near-field signal emitted by the signal transmitting unit 31, it means that the device to be charged has reached the vicinity of the charging pile position, and the signal transmitting unit 25 transmits an indication of receiving the near-field signal. The charging function simulation unit 3 continues to slide along the housing direction. When the signal of the pile signal device 24 is received, it means that the sensor receiving simulation unit 2 and the charging function simulation unit 3 have been matched, and the device to be charged can start charging.

[0067] The present invention discloses a complete test device, which simulates the detection signal reception of the charging pile by a fixed signal receiving device, and places a signal transmitting device on a mobile platform, and simulates the behavior of the sweeping robot detecting and approaching the charging pile when charging by moving the signal transmitting device. Thus, the performance of the sweeping robot automatically finding the charging pile can be simulated by a test device, which saves the test space, improves the test efficiency, and provides a convenient test environment for the development of sweeping robots and charging piles.

[0068] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A charging pile testing device, characterized in that: include: A housing (1); the housing having at least one through hole for transmitting a cable into the housing; A sensor receiving simulation unit (2) is fixed inside the housing (1); The charging function simulation unit (3) is slidably arranged on the front side of the housing (1), so that the relative distance between the charging function simulation unit (3) and the sensor receiving simulation unit (2) varies within a certain range, wherein the charging function simulation unit (3) comprises: A signal transmitting unit (31), used for transmitting near-field and / or far-field signals; The main control unit (32) is used to control the signal transmitting unit (31) to transmit near-field and / or far-field signals.

2. The charging pile testing device according to claim 1, characterized in that: The sensor receiving simulation unit (2) comprises: A positioning plate (21) fixed on the bottom surface of the housing (1); At least one far-field signal receiving module (22), fixed to a side of the positioning plate (21) away from the charging function simulation unit (3), and used for receiving far-field signals; At least one near-field signal receiving module (23) is fixed to a side of the positioning plate (21) close to the charging function simulation unit (3) and is used to receive a near-field signal.

3. The charging pile testing device according to claim 2, characterized in that: The sensor receiving simulation unit (2) comprises four near-field signal receiving modules (23), and the four near-field signal receiving modules (23) respectively receive the near-field signal emitted by the signal emitting unit (31) from different angles.

4. The charging pile testing device according to claim 3, characterized in that: The four different angles are 45°, 75°, 105° and 135° respectively.

5. The charging pile testing device according to claim 2, characterized in that: The sensor receiving simulation unit (2) comprises three far-field signal receiving modules (22), and the three far-field signal receiving modules (22) receive the far-field signal emitted by the signal emitting unit (31) from different angles respectively.

6. The charging pile testing device according to claim 2, characterized in that: Also included is a sliding assembly (4), comprising: A slide rail (41) fixed to the bottom surface of the housing (1); The slider (42) is fixed to the charging function simulation unit (3) and can slide along the slide rail (41), so that the charging function simulation unit (3) moves relative to the sensor receiving simulation unit (2).

7. The charging pile testing device according to claim 6, characterized in that: The length of the slide rail (41) is 30-60 cm.

8. The charging pile testing device according to claim 2, characterized in that: The sensor receiving simulation unit (2) further comprises: The pile signal device (24) is fixed on the positioning plate (21) and gives a pile signal when the sensor receiving simulation unit (2) matches the charging function simulation unit (3).

9. The charging pile testing device according to claim 1, characterized in that: The charging function simulation unit (3) further comprises: A bracket (33) for carrying the control unit and the signal transmitting unit (31) and the main control unit (32); A circuit board (34) is located on the bracket (33) and is electrically connected to the signal transmitting unit (31) and the main control unit (32).

10. The charging pile testing device according to claim 9, characterized in that: The charging function simulation unit (3) further comprises: A hydraulic rod (35) is located on the back of the bracket (33) and pushes the charging function simulation unit (3) to slide under the control of the control unit.

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