Electrical box detection device and system

Abstract

The utility model discloses an electric appliance box detection device and system, and belongs to the field of electric appliance box detection. The electrical box detection device comprises a probe and a detection circuit. The probe comprises two probes which are respectively connected with a main contact of an alternating current contactor in a detected electric appliance box; the probe is connected with the detection circuit; a normal display unit is arranged in the detection circuit, and when the AC contactor of the detected electrical box is correctly connected, the normal display unit displays in a first preset form. According to the scheme of the invention, the normal display unit is arranged in the detection circuit, the detection of the detected electric appliance box can be realized after the probe is connected with the detected electric appliance box, and the normal display unit can display when the wiring of the AC contactor of the detected electric appliance box is correct, so that whether the wiring of the detected electric appliance box is correct or not can be detected in this way. The electrical box with wrong wiring can be timely removed, and the influence on subsequent production and use is avoided.

Description

Technical Field

[0001] This utility model relates to the field of electrical box testing, and in particular, to an electrical box testing device and system. Background Technology

[0002] The air conditioner electrical box is one of the most important components of an air conditioner. For example... Figure 1 As shown, it houses the air conditioner's electronic control components, including switches and AC contactors. These components play a crucial role, connecting the indoor and outdoor units while ensuring the air conditioner operates normally.

[0003] However, during the assembly process of the electrical box components in mass production, the main contacts on the AC contactor ( Figure 1 Pins 1 and 0 of the AC contactor and secondary contacts ( Figure 1 Pins 1 and 0 of the AC contactor are easily misplaced, and the main contact wires and auxiliary contact wires are often incorrectly connected. Furthermore, because the electrical box is sealed after wiring, it's impossible to visually determine if the wiring is faulty. Incorrect wiring can lead to malfunctions during final assembly and testing, such as the compressor failing to start or the test bench tripping. This necessitates removing the entire unit from the production line, assigning dedicated personnel for repairs, wasting manpower, and severely impacting production efficiency. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this utility model provides an electrical box testing device and system. This addresses the problem that existing electrical boxes are sealed after wiring is completed, making it impossible to visually determine if the wiring is abnormal. Incorrect wiring can lead to malfunctions such as compressor failure during final assembly and testing, and test bench tripping. This necessitates removing the entire unit from the production line, assigning dedicated personnel for repairs, wasting manpower, and severely impacting production efficiency.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] In a first aspect, an electrical box detection device is provided, comprising: a probe and a detection circuit;

[0007] The probe includes two probes, each connected to a main contact of an AC contactor in the electrical box under test.

[0008] The probe is connected to the detection circuit;

[0009] The detection circuit is equipped with a normal display unit. When the AC contactor of the electrical box under test is wired correctly, the normal display unit displays in a first preset form.

[0010] As an optional implementation of this application, the normal display unit in the detection circuit is connected in series with the electrical appliance box under test. When the AC contactor of the electrical appliance box under test is reversed, the power supply cannot supply power to the normal display unit.

[0011] As an optional implementation of this application, the detection circuit further includes a first switch;

[0012] The first switch is used to control whether the detection circuit is powered on.

[0013] As an optional implementation of this application, the detection circuit includes a rectifier;

[0014] The rectifier is used to convert mains power into a preset voltage.

[0015] As an optional implementation of this application, the detection circuit further includes an anomaly display unit;

[0016] The detection circuit includes at least two input terminals and at least two output terminals, wherein the number of input terminals and the number of output terminals are the same.

[0017] Each input terminal is connected to the same target contact point of the AC contactor of the energized electrical appliance box under test;

[0018] The first output terminal is connected to the normal display unit;

[0019] The second output terminal is connected to the abnormality display unit;

[0020] When the target contact point of the electrical box under test is at a high level, the first output terminal outputs a high level; the second output terminal outputs a low level. When the target contact point of the electrical box under test is at a low level, the first output terminal outputs a low level; the second output terminal outputs a high level.

[0021] As an optional implementation of this application, the detection circuit further includes a second switch;

[0022] The second switch is used to determine whether the output of the detection circuit is connected to the target contact point.

[0023] As an optional implementation of this application, the exception display unit adopts at least one of the following:

[0024] LED lights;

[0025] buzzer.

[0026] As an optional implementation of this application, the normal display unit adopts at least one of the following:

[0027] LED lights;

[0028] buzzer.

[0029] As an optional implementation of this application, the probe includes a probe and a magnet.

[0030] In a second aspect, an electrical box detection system is provided, comprising: an electrical box detection device as described in any of the preceding claims.

[0031] The application employs the above technical solution and has at least the following beneficial effects:

[0032] This application provides an electrical box testing device and system. The electrical box testing device includes a probe and a testing circuit. The probe includes two probes, each connected to a main contact of an AC contactor in the electrical box under test. The probe is connected to the testing circuit. The testing circuit includes a normal display unit. When the AC contactor wiring of the electrical box under test is correct, the normal display unit displays the correct information in a first preset format. This application, by setting a normal display unit within the testing circuit, enables the testing of the electrical box under test after the probe is connected to it. When the AC contactor wiring of the electrical box is correct, the normal display unit displays the correct information, thus detecting whether the wiring of the electrical box is correct. This ensures that incorrectly wired electrical boxes can be promptly rejected, avoiding impact on subsequent production and use. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a wiring guide diagram for an electrical box provided in an embodiment of this utility model.

[0035] Figure 2 This is a schematic diagram of an electrical box testing device provided in an embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of the internal structure of an electrical box testing device provided in an embodiment of this utility model;

[0037] Figure 4 This is a schematic diagram of the detection circuit of an electrical box detection device using a storage battery, provided in an embodiment of this utility model.

[0038] Figure 5 This is a schematic diagram of the detection circuit of an electrical box detection device using mains power, provided in an embodiment of this utility model.

[0039] Figure 6 This is a schematic diagram of the detection circuit of another electrical box detection device provided in this embodiment of the utility model;

[0040] Figure 7 This utility model provides an embodiment of a method in which... Figure 6 The circuit diagram of the optimized electrical box detection device.

[0041] Figure 8 This is provided by the embodiment of the present utility model. Figure 7 The circuit diagram shown is the control principle diagram.

[0042] Explanation of reference numerals in the attached figures:

[0043] 1-Probe, 2-Detection circuit, 3-Normal display unit, 4-Tested electrical appliance box, U-Battery, K1-First switch, K2-Second switch, 5-Abnormal display unit, 6-Rectifier. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this utility model will be described in detail below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] refer to Figure 1 The part of the electrical box that is easy to connect incorrectly is the main contact of the AC contactor (i.e., Figure 1 Pins 1 and 0 of the AC contactor and secondary contacts ( Figure 2 Wiring of pins 1 and 0 of the AC contactor. Pin 0 of the AC contactor is grounded.

[0046] During the manufacturing process of electrical boxes, they are sealed to ensure the safety of internal components. Therefore, once the wiring is complete, it's impossible to visually inspect for incorrect connections. Testing is always performed after assembling the box with the indoor and outdoor units. However, incorrect wiring in the electrical box manifests as the compressor failing to start and the test bench tripping. These problems are not unique to reversed main contactor wiring in the electrical box, making testing cumbersome and requiring frequent assembly and disassembly, which is time-consuming and labor-intensive.

[0047] To address the aforementioned problems, this utility model provides an electrical box testing device, the overall schematic diagram of which is shown below. Figure 2 and Figure 3 The electrical box testing device includes a probe and a testing circuit; the testing circuit is located inside the electrical box testing device, and the probe is led out through a wire (not shown in the figure).

[0048] The probe includes two probes, each connected to a main contact of an AC contactor in the electrical box under test; that is, the electrical box testing device is connected to the main contact of the electrical box under test through the probes.

[0049] In a preferred embodiment of this application, the probe includes a probe and a magnet. The probe is conductive after being connected to an AC contactor. The magnet is used to make the connection between the probe and the electrical box under test more secure. Specifically, the probe is constructed by stacking multiple layers of bakelite, with two probes and a magnet built in. The bakelite is used to fix the probe and the magnet.

[0050] The probe is connected to the detection circuit;

[0051] The detection circuit includes a normal display unit. When the AC contactor of the electrical box under test is correctly wired, the normal display unit displays the information in a first preset format. The normal display unit employs at least one of the following:

[0052] LED lights;

[0053] buzzer.

[0054] For example, the normal display unit displays in a first preset form including: an LED light showing green light, and / or a buzzer beeping once.

[0055] In one implementation of this application, the normal display unit in the detection circuit is connected in series with the electrical appliance box under test. When the AC contactor of the electrical appliance box under test is reversed, the power supply cannot supply power to the normal display unit.

[0056] The following provides a specific implementation method, such as Figure 4 As shown, the electrical box testing device has a built-in battery U, eliminating the need for mains power connection. After probe 1 is connected to the electrical box 4 under test, battery U supplies power to the electrical box 4. When the wiring inside the electrical box 4 is correct, the circuit is connected, the normal display unit 3 is powered on, and a prompt is issued in the first preset format. Upon seeing the prompt from the normal display unit 3, the testing personnel can clearly understand that the wiring of the electrical box 4 is correct. If the normal display unit 3 does not issue a prompt, it indicates that the wiring of the electrical box 4 is incorrect.

[0057] in, Figure 4 A buzzer is used as the normal display unit 3, but an LED light can also be used in practice. Alternatively, both a buzzer and an LED light can be used. The first preset form is set according to actual needs, and this application does not make specific limitations.

[0058] To ensure circuit safety, the detection circuit 2 also includes a first switch K1;

[0059] The first switch K1 is used to control whether the detection circuit 2 is powered on.

[0060] The testing steps are as follows: First switch K1 is open, probe 1 is connected to the electrical box 4 under test, and then first switch K1 is closed to perform the test. After the test is completed, first switch K1 is opened, and then probe 1 is disconnected from the electrical box 4 under test.

[0061] In practical use, it is also possible to use AC power instead of a battery (U). In this case, a rectifier and / or transformer is needed to convert the AC power to a preset voltage. For example... Figure 5 As shown, mains power supplies the tested electrical appliance box 4 through rectifier 6. When the wiring inside the tested electrical appliance box 4 is correct, the circuit is connected, the normal display unit 3 is powered on, and a prompt is issued in the first preset format. After seeing the prompt issued by the normal display unit 3, the tester can clearly know that the wiring of the tested electrical appliance box 4 is correct. If the normal display unit 3 does not issue a prompt, it indicates that the wiring of the tested electrical appliance box 4 is incorrect.

[0062] in, Figure 5 A buzzer is used as the normal display unit 3, but an LED light can also be used in practice. Alternatively, both a buzzer and an LED light can be used. The first preset form is set according to actual needs, and this application does not make specific limitations.

[0063] To ensure circuit safety, the detection circuit 2 also includes a first switch K1;

[0064] The first switch K1 is used to control whether the detection circuit 2 is powered on.

[0065] The testing steps are as follows: First switch K1 is open, probe 1 is connected to the electrical box 4 under test, and then first switch K1 is closed to perform the test. After the test is completed, first switch K1 is opened, and then probe 1 is disconnected from the electrical box 4 under test.

[0066] In the two embodiments described above, continuity is detected by checking whether the electrical box is powered on. As an optional implementation of this application, the wiring can also be judged based on the voltage level of the main contacts after the electrical box is powered on, because a high voltage level on the main contacts indicates correct wiring, while a low voltage level indicates incorrect wiring.

[0067] like Figure 6 As shown, the input terminal of the detection circuit 2 is connected to the target contact point of the AC contactor of the energized electrical appliance box 4. The target contact point is the main contact point where the voltage level is high when the wiring is correct; the output terminal is connected to the normal display unit 3.

[0068] When the target contact point of the electrical box under test 4 is at a high level, the output terminal outputs a high level, and the normal display unit 3 displays in the first preset form; when the target contact point of the electrical box under test 4 is at a low level, the output terminal outputs a low level, and the normal display unit 3 does not display.

[0069] The electrical box testing devices described above are simple in structure and low in cost. However, in actual testing, the following situation has occurred: the normal display unit 3 does not display anything, but subsequent testing of the tested electrical box 4 reveals that its wiring is correct. Upon careful inspection, it was found that the probe 1 of the electrical box testing device had poor contact with the tested electrical box 4 during testing. In this case, regardless of whether the internal wiring of the tested electrical box 4 is correct, the normal display unit 3 will not display anything.

[0070] To avoid the above situation, the detection circuit 2 in this embodiment of the application further includes an abnormality display unit 5;

[0071] The detection circuit 2 includes at least two input terminals and at least two output terminals, wherein the number of input terminals and the number of output terminals are the same.

[0072] Each input terminal is connected to the same target contact point of the AC contactor of the energized electrical appliance box 4 under test;

[0073] The first output terminal is connected to the normal display unit 3;

[0074] The second output terminal is connected to the abnormality display unit 5;

[0075] When the target contact point of the electrical box 4 under test is at a high level, the first output terminal outputs a high level; the second output terminal outputs a low level. When the target contact point of the electrical box 4 under test is at a low level, the first output terminal outputs a low level; the second output terminal outputs a high level.

[0076] To ensure circuit safety, the detection circuit 2 also includes a second switch K2;

[0077] The second switch K2 is used to determine whether the output of the detection circuit 2 is connected to the target contact point.

[0078] The anomaly display unit 5 employs at least one of the following:

[0079] LED lights;

[0080] buzzer.

[0081] For example, such as Figure 7As shown, the first input pin X1, the second input pin X2, and the third input pin X3 of the detection circuit 2 are respectively connected to probe 1, which is connected to the target contact head; the other probe 1 is grounded, and Y1 is the output pin corresponding to X1. Specifically, the level of Y1 is consistent with the level of X1, and the level of Y1 is only affected by the level of X1; that is, when X1 is high, Y1 is high, and when X1 is low, Y1 is low. The level of Y2 is opposite to the level of X2, and the level of Y2 is only affected by the level of X2; that is, when X2 is high, Y2 is low, and when X2 is low, Y2 is high. The level of Y3 is opposite to the level of X3, and the level of Y3 is only affected by the level of X3; that is, when X3 is high, Y3 is low, and when X3 is low, Y3 is high.

[0082] Thus, the voltage levels at X1, X2, and X3 are the same as those at the target contact point. When the wiring is correct, the voltage level at the target contact point is high, meaning the voltage levels at X1, X2, and X3 are also high. Based on the characteristics of the detection circuit 2 described above, Y1 is at a high voltage level, and the normal display unit 3 (shown as an LED in the diagram) connected to it displays in the first preset format (e.g., a bright green light). Meanwhile, Y2 and Y3 are at a low voltage level, and the abnormal display unit 5 (shown as an LED connected to Y2 and a buzzer connected to Y3 in the diagram) does not display anything (i.e., the LED is off and the buzzer is silent).

[0083] When the wiring is incorrect, the target contact point level is low, that is, the levels at X1, X2, and X3 are low. Based on the characteristics of the detection circuit 2 described above, Y1 is at a low level, and the normal display unit 3 (LED in the diagram) connected to it does not display (i.e., it is not lit). However, Y2 and Y3 are at a high level, and the abnormal display unit 5 connected to them (Y2 is connected to an LED in the diagram, and Y3 is connected to a buzzer) displays in the second preset form (e.g., the LED lights up red, and the buzzer sounds once every 1 second).

[0084] It should be noted that the first preset form is different from the second preset form, so that the abnormal display unit 5 and the normal display unit 3 can be distinguished when they use the same type of components.

[0085] From a functional perspective, the intermediate circuit between X1 and Y1 in detection circuit 2 can be connected using only a resistor. No special configuration is required. The circuit between X2 and Y2 (or X3 and Y3) implements the NOT function, which can be achieved in various ways, such as using an inverter or a transistor. Inverters are a mature technology and will not be discussed in detail here. A common implementation of a transistor is as follows: the base (input) of the transistor is connected to the input signal, while the collector (output) is connected to the output signal line. When the input signal is low, the transistor is turned on, and the output signal is high; when the input signal is high, the transistor is turned off, and the output signal is low.

[0086] Of course, the above functions can also be achieved using a PLC in existing technologies, such as... Figure 7 The diagram shown is a control principle diagram using a PLC. In the diagram, X001 represents the signal at X1, X002 represents the signal at X2, X003 represents the signal at X3, Y001 represents the signal at Y1, Y003 represents the signal at Y3, and Y003 represents the signal at Y3. The logic can be simply summarized as follows:

[0087] M100 = X001;

[0088] Y001 = X002 + M100 + X003 inverse phase;

[0089] Y002 = X002 + the inverted phase of M100 + the inverted phase of X003;

[0090] Y003 = X002 + the inverted phase of M100 + the inverted phase of X003;

[0091] Taking the main contact point as high level as an example, at this time, X001=1, M100=1, X002=0, X003=0, the inverted phase of X003=1, and the inverted phase of M100=0; thus, Y001=1, Y002=0, and Y003=0. That is, Y1 is high level, and Y2 and Y3 are low level.

[0092] In this embodiment, the electrical box detection device displays a normal status (normal display unit 3) when the electrical box wiring is correct, and an abnormal status (abnormal display unit 5) when the electrical box wiring is incorrect. When the probe 1 has poor contact with the electrical box, neither the normal display unit 3 nor the abnormal display unit 5 displays anything. This ensures accurate detection of the electrical box and improves production efficiency.

[0093] The electrical box testing device provided in this application includes a probe 1 and a testing circuit 2. The probe 1 includes two probes, each connected to a main contact of the AC contactor in the electrical box 4 under test. The probe 1 is connected to the testing circuit 2. The testing circuit 2 has a normal display unit 3. When the AC contactor wiring of the electrical box 4 under test is correct, the normal display unit 3 displays the correct wiring in a first preset format. This solution, by setting a normal display unit 3 within the testing circuit 2, enables the testing of the electrical box 4 under test after the probe 1 is connected to it. When the AC contactor wiring of the electrical box 4 under test is correct, the normal display unit 3 displays the correct wiring. This method ensures that incorrectly wired electrical boxes can be promptly removed, avoiding impact on subsequent production and use.

[0094] Based on the same inventive concept, this application provides an electrical box detection system, including the electrical box detection device provided in any of the above embodiments.

[0095] For example, the electrical box testing system, based on the electrical box testing device of any of the above embodiments, adds a conveyor belt, a positioning mechanism, and a robotic arm to achieve automatic electrical box testing. Specifically, the conveyor belt transports the electrical box to be tested. When it reaches a designated position, the robotic arm grabs the electrical box from the conveyor belt and moves it to a preset position for testing. Then, the positioning mechanism fixes the electrical box at the preset position. After fixing, the main contacts of the electrical box are connected to the probe (the probe is set at a specific position within the preset position). Then, power is applied for testing. After the test is completed, the robotic arm places the electrical box in different positions based on the test results.

[0096] It is understood that the same or similar parts in the above embodiments can be referred to each other, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0097] It should be noted that in the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "a plurality of" means at least two.

[0098] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this application pertain.

[0099] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0100] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0101] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0102] The storage media mentioned above can be read-only memory, disk, or optical disk, etc.

[0103] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0104] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An electrical box detection device, comprising: include: Probe and detection circuit; The probe includes two probes, each connected to a main contact of an AC contactor in the electrical box under test. The probe is connected to the detection circuit; The detection circuit is equipped with a normal display unit. When the AC contactor of the electrical box under test is wired correctly, the normal display unit displays in a first preset form.

2. The electrical box detection device of claim 1, wherein: The normal display unit in the detection circuit is connected in series with the electrical appliance box under test. When the AC contactor of the electrical appliance box under test is reversed, the power supply cannot supply power to the normal display unit.

3. The electrical box detection device of claim 1, wherein: The detection circuit also includes a first switch; The first switch is used to control whether the detection circuit is powered on.

4. The electrical box testing device according to claim 1, characterized in that: The detection circuit includes a rectifier; The rectifier is used to convert mains power into a preset voltage.

5. The electrical box detection device of claim 1, wherein: The detection circuit also includes an anomaly display unit; The detection circuit includes at least two input terminals and at least two output terminals, wherein the number of input terminals and the number of output terminals are the same. Each input terminal is connected to the same target contact point of the AC contactor of the energized electrical appliance box under test; The first output terminal is connected to the normal display unit; The second output terminal is connected to the abnormality display unit; When the target contact point of the electrical box under test is at a high level, the first output terminal outputs a high level; the second output terminal outputs a low level. When the target contact point of the electrical box under test is at a low level, the first output terminal outputs a low level; the second output terminal outputs a high level.

6. The electrical box detection device of claim 5, wherein: The detection circuit also includes a second switch; The second switch is used to determine whether the output of the detection circuit is connected to the target contact point.

7. The electrical box detection device of claim 5, wherein: The anomaly display unit employs at least one of the following: LED lights; buzzer.

8. The electrical box detection device of claim 1, wherein: The normal display unit adopts at least one of the following: LED lights; buzzer.

9. The electrical box testing device according to claim 1, characterized in that: The probe includes a probe and a magnet.

10. An electrical box detection system, comprising: include: The electrical box testing device as described in any one of claims 1-9.

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