Detection apparatus, method, electronic device and computer readable storage medium

Abstract

The application provides a detection device, a method, an electronic device and a computer readable storage medium. The detection device comprises a control detection unit and a conduction unit. The control detection unit is electrically connected with the conduction unit. The conduction unit is used for being electrically connected with three-phase windings of a three-phase motor. The control detection unit sends a driving signal to the conduction unit. The conduction unit connects at least two target windings in the three-phase windings to be conducted according to the driving signal. The control detection unit detects whether the at least two target windings and a connecting line thereof are abnormal. The detection device can detect the connectivity between the three-phase windings with a star sealing function. When the connectivity between the three-phase windings is abnormal, the detection device can timely alarm and maintain, improve the reliability of the star sealing function of the elevator, and further improve the reliability and safety of the operation of the elevator.

Description

Technical Field

[0001] This application relates to the field of motor testing technology, and more specifically, to a testing device, method, electronic device, and computer-readable storage medium. Background Technology

[0002] The star-connection function of an elevator refers to the short-circuiting of the three-phase winding leads connected in a star configuration during the power outage period when the elevator uses a permanent magnet synchronous gearless traction machine. When the traction machine brake fails, the elevator car's sliding speed is much lower than the normal operating speed, thus providing a safe operating condition for the elevator.

[0003] Currently, elevators typically use independent star-sealing contactors to perform the star-sealing function. These contactors close when the main contactor of the three-phase motor is open, thus connecting the elevator's three-phase winding leads in a star configuration. However, abnormal connections may occur between the three-phase windings of the elevator's three-phase motor. In such cases, even if the star-sealing contactor operates, the three-phase windings cannot form a star connection, failing to achieve the star-sealing function and posing a safety hazard to the elevator. Summary of the Invention

[0004] The purpose of this application is to provide a detection device, method, electronic device, and computer-readable storage medium to solve the safety hazard problem caused by the use of traditional star-sealed contactors when the connection between the three-phase windings of the three-phase motor of an elevator is abnormal.

[0005] In a first aspect, the present invention provides a detection device for detecting motor windings with a star-sealing function. The device includes a control detection unit and a conduction unit. The control detection unit is electrically connected to the conduction unit, which is used to electrically connect to the three-phase windings of a three-phase motor. The control detection unit is used to send a drive signal to the conduction unit. The conduction unit is used to connect and conduct at least two target windings of the three-phase windings according to the drive signal. The control detection unit is also used to detect whether there are any abnormalities in the at least two target windings and their connecting lines.

[0006] The detection device designed above, in this scheme, controls the conduction unit through the designed control detection unit to connect at least two target windings of the three-phase winding, thereby detecting whether there are any abnormalities in the at least two target windings and their connecting lines. In this way, it can promptly alarm and repair when there are abnormalities in the connection between the three-phase windings, improve the reliability of the elevator's star-sealing function, and thus improve the reliability and safety of elevator operation.

[0007] In an optional embodiment of the first aspect, the control detection unit includes a control component and a sampling component, wherein the control component is electrically connected to the sampling component and the sampling component is electrically connected to the conduction unit; the sampling component is used to sample feedback signals from at least two target windings and transmit the feedback signals to the control component after the conduction unit drives at least two target windings to be connected and turned on; the control component is used to detect whether there is any abnormality in at least two target windings and their connecting lines based on the feedback signals.

[0008] In the implementation of the above design, this solution splits the control and detection unit into a simplified control component and a sampling component, thereby separating the feedback signal sampling and detection functions and avoiding the problem of excessive costs caused by control and detection unit failure.

[0009] In an optional embodiment of the first aspect, the control detection unit further includes a drive component, the control component being electrically connected to the drive component, and the drive component being electrically connected to the conduction unit; the control component is used to send a control signal to the drive device; the drive component is used to send a drive signal corresponding to the control signal to the conduction unit according to the control signal, so as to drive the conduction unit to connect and conduct at least two target windings in the three-phase winding.

[0010] In the above-described implementation, the control and detection unit is further divided into a drive component, so that the drive signal is implemented using a separate device. In the event of a drive failure, only the drive component needs to be replaced, thereby saving costs.

[0011] In an optional embodiment of the first aspect, the conduction unit includes a first controllable power device, a second controllable power device, and a third controllable power device; the first terminal of the first controllable power device is connected to a level signal and the first winding of the three-phase winding, respectively; the first terminal of the second controllable power device is connected to the second winding of the three-phase winding; the first terminal of the third controllable power device is connected to the third winding of the three-phase winding; the second terminals of the first, second, and third controllable power devices are all grounded; the control terminals of the first, second, and third controllable power devices are all electrically connected to the control detection unit.

[0012] In the above-described implementation method, this solution can achieve the function of conducting at least two target windings of the three-phase winding by using multiple controllable power devices, thereby simplifying the structure of the designed conducting unit and saving device costs.

[0013] In an alternative embodiment of the first aspect, the sampling component is connected to a first terminal of the first controllable power device to sample the voltage at the first terminal of the first controllable power device as a feedback signal.

[0014] In an optional embodiment of the first aspect, the driving component includes a first driving member and a second driving member. The control component is connected to the control terminal of the second controllable power device through the first driving member, and the control component is connected to the control terminal of the third controllable power device through the second driving member. The first driving member is used to generate a first driving signal when it receives a control signal sent by the control component to drive the second controllable power device to conduct, so that the first winding and the second winding are connected and conducted. The second driving member is used to generate a second driving signal when it receives a control signal sent by the control component to drive the third controllable power device to conduct, so that the first winding and the third winding are connected and conducted.

[0015] Secondly, the present invention provides a detection method applied to a motor winding detection device. The device includes a control detection unit and a conduction unit, the control detection unit being electrically connected to the conduction unit, and the conduction unit being used to electrically connect to the three-phase windings of a three-phase motor. The method includes: sending a drive signal to the conduction unit to connect and conduct at least two target windings in the three-phase windings according to the drive signal; sampling feedback signals from the at least two target windings; and detecting whether the at least two target windings and their connecting lines are abnormal based on the feedback signals.

[0016] The detection method described above uses a drive signal sent by a conduction unit to connect at least two target windings of the three-phase winding. This allows for the detection of any abnormalities in the at least two target windings and their connecting lines. Consequently, it enables timely alarms and repairs when abnormalities occur in the connection between the three-phase windings, thereby improving the reliability of the elevator's star-sealing function. This, in turn, enhances the reliability and safety of elevator operation and ensures the safe use of the motor's star-sealing function.

[0017] Thirdly, this application provides an electronic device including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the method described in the second aspect or any optional implementation thereof.

[0018] Fourthly, this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, performs the method described in the second aspect or any optional implementation thereof.

[0019] Fifthly, this application provides a computer program product that, when run on a computer, causes the computer to perform the method described in the second aspect or any optional implementation thereof.

[0020] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a connection diagram of a traditional sealing contactor;

[0023] Figure 2 This is a first structural schematic diagram of the detection device provided in an embodiment of this application;

[0024] Figure 3 This is a second structural schematic diagram of the detection device provided in the embodiments of this application;

[0025] Figure 4 This is a third structural schematic diagram of the detection device provided in the embodiments of this application;

[0026] Figure 5 This is a fourth structural schematic diagram of the detection device provided in the embodiments of this application;

[0027] Figure 6 This is a fifth structural schematic diagram of the detection device provided in the embodiments of this application;

[0028] Figure 7 This is a sixth structural schematic diagram of the detection device provided in the embodiments of this application;

[0029] Figure 8 This is a schematic diagram of the first process of the detection method provided in the embodiments of this application;

[0030] Figure 9 This is a schematic diagram of the second process of the detection method provided in the embodiments of this application;

[0031] Figure 10 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0032] Icons: A - Traction machine; B - Elevator mainboard; U - First winding; V - Second winding; W - Third winding; 10 - Control and detection unit; 110 - Control component; 120 - Sampling component; 130 - Drive component; 1310 - First drive unit; 1320 - Second drive unit; 20 - Conduction unit; Q1 - First controllable power device; Q2 - Second controllable power device; Q3 - Third controllable power device; 30 - Power supply; L1 - First drive signal; L2 - Second drive signal; N1 - First control signal; N2 - Second control signal; F1 - First feedback signal; F2 - Second feedback signal; R1 - Resistor; D1 - Diode; CH - Level signal; 1000 - Electronic equipment; 1001 - Processor; 1002 - Memory; 1003 - Communication bus. Detailed Implementation

[0033] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0035] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0036] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0037] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0038] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0039] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0040] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0041] Currently, for elevator safety, elevators generally have a star-connection function. The star-connection function means that when the permanent magnet synchronous gearless traction machine (three-phase motor) used in the elevator loses power, the three-phase winding leads of the traction machine are connected in a star configuration, so that the three-phase motor is converted from a motor to a "generator". This makes the traction machine need to provide greater force to move, and thus when the traction machine brake fails, the elevator car's sliding speed is much lower than the elevator's normal operating speed, improving the elevator's safety conditions.

[0042] Currently, most elevators on the market use independent sealing contactors to complete the elevator sealing function. The connection method between this sealing contactor and the three-phase motor is as follows: Figure 1 As shown, when the main contactor of the three-phase motor is disconnected, the star contactor closes, causing the three-phase winding leads of the three-phase motor to be short-circuited.

[0043] The inventors have discovered that using a sealing contactor to implement the sealing function in elevators can create safety hazards. Specifically, if there is an abnormality in the connection between the windings of the elevator's three-phase motor, even if the sealing contactor is closed, the three-phase windings cannot be short-circuited due to the connection problem between them, thus failing to achieve the sealing function. This seriously affects the reliability and safety of the elevator's operation.

[0044] In response, the inventors have designed a detection device, method, electronic device, and computer-readable storage medium. This solution can detect the connectivity between three-phase windings, and can promptly alarm and repair when there is an abnormal connection between the three-phase windings, thereby improving the reliability of the elevator's star-sealing function and thus improving the reliability and safety of elevator operation.

[0045] Specifically, this application provides a detection device, such as Figure 2 As shown, the detection device includes a control detection unit 10 and a conduction unit 20. The control detection unit 10 is electrically connected to the conduction unit 20. The conduction unit 20 is used to electrically connect to the three-phase windings of the traction machine A (three-phase motor). The three-phase windings may include a first winding U, a second winding V, and a third winding W. The following description uses the three-phase windings as the first winding U, the second winding V, and the third winding W as examples.

[0046] In the detection device designed above, when performing detection, the control detection unit 10 can send a drive signal to the conduction unit 20. After receiving the drive signal, the conduction unit 20 connects at least two target windings in the three-phase windings based on the drive signal. For example, the first winding U and the second winding V are connected, or the first winding U and the third winding W are connected, or the first winding U, the second winding V and the third winding W are all connected.

[0047] When at least two target windings are connected and conducting, the control detection unit 10 detects whether there is any abnormality in the at least two connected target windings and their connecting lines. In this scheme, the detected abnormality refers to the connection of at least two target windings by the conducting unit 20. However, in reality, at least two target windings may have broken windings, broken connecting lines, or other reasons, meaning that at least two target windings may not actually be conducting.

[0048] As one possible implementation, when the control detection unit 10 detects abnormalities in at least two target windings and their connecting lines, the control detection unit 10 can generate an alarm message to remind maintenance personnel to stop and repair the elevator's traction machine in a timely manner. When the control detection unit 10 detects that the connections between the three-phase windings are all normal and the traction machine is de-energized, the control detection unit 10 can control the conduction unit 20 to conduct the connections between the three-phase windings, thereby realizing the elevator's star-sealing function through the control detection unit 10 and the conduction unit 20.

[0049] The detection device designed above, in this scheme, uses a control detection unit 10 to control a conduction unit 20 to connect at least two target windings of the three-phase winding, thereby detecting whether there are any abnormalities in the at least two target windings and their connecting lines. This allows for timely alarm and repair when there are abnormalities in the connection between the three-phase windings, improving the reliability of the elevator's star-sealing function and thus enhancing the reliability and safety of elevator operation. Furthermore, when all three-phase windings are connected normally, the control detection unit can control the conduction unit to connect all connections between the three-phase windings, achieving the star-sealing function. Therefore, this scheme provides a multi-functional device that simultaneously possesses star-sealing functionality and motor winding detection capabilities.

[0050] In an optional implementation of this embodiment, such as Figure 3 As shown, the control and detection unit 10 may include a control component 110 and a sampling component 120. The control component 110 is electrically connected to the sampling component 120, and the sampling component 120 is electrically connected to the conduction unit 20. Specifically, the control component 110 may be a controller, a chip, etc.; the sampling component 120 may be a voltage sampling device, a voltage sampling isolation device, or a series of devices currently capable of sampling voltage signals.

[0051] The control detection unit 10 and control component 110 designed above can generate the drive signal. The conduction unit 20 connects and conducts at least two target windings of the three-phase winding based on the drive signal. The sampling component 120 samples the feedback signal from the two connected target windings and transmits the feedback signal to the control component 110. The control component 110 then detects whether there is any abnormality in the at least two target windings and their connecting lines based on the feedback signal.

[0052] In an optional implementation of this embodiment, such as Figure 4 As shown, the control detection unit 10 may further include a drive component 130, which is electrically connected to the control component 110 and to the conduction unit 20.

[0053] The control detection unit 10 and control component 110 designed above can send control signals to the drive component 130. The drive component 130 outputs corresponding drive signals based on the control signals to drive the conduction unit 20 to connect and conduct at least two target windings.

[0054] In an optional implementation of this embodiment, such as Figure 5 As shown, the conduction unit 20 may specifically include a first controllable power device Q1, a second controllable power device Q2, and a third controllable power device Q3. The first terminal of the first controllable power device Q1 is connected to a level signal CH and the first winding U of the three-phase winding, respectively. The first terminal of the second controllable power device Q2 is connected to the second winding V of the three-phase winding, and the first terminal of the third controllable power device Q3 is connected to the third winding W of the three-phase winding. The second terminals of the first controllable power device Q1, the second controllable power device Q2, and the third controllable power device Q3 are all grounded. The control terminals of the first controllable power device Q1, the second controllable power device Q2, and the third controllable power device Q3 are all electrically connected to the control detection unit 10. The level signal CH can be a high-level signal or a low-level signal. The controllable power devices in the conduction unit 20 can all be insulated-gate bipolar transistors (IGBTs) or other types of transistors. These controllable power devices can also be other types of controllable devices, such as silicon controlled rectifiers (SCRs).

[0055] It should be noted that when the aforementioned controllable power devices are all insulated-gate bipolar transistors (IGBTs), the first terminal of all controllable power devices refers to the collector of the IGBT, the second terminal refers to the emitter of the IGBT, and the control terminal refers to the base of the IGBT. The specific connection method is the same as... Figure 5 The connection methods are the same.

[0056] The conduction unit 20 designed above allows the control and detection unit 10 to send a first drive signal L1 to the second controllable power device Q2. This first drive signal L1 turns on the second controllable power device Q2, causing the first winding U and the second winding V to connect and conduct. The control and detection unit 10 can sample a first feedback signal F1 from the first winding U and the second winding V, thereby detecting whether the first winding U, the second winding V, and their connecting lines are abnormal based on the first feedback signal F1.

[0057] The control detection unit 10 can also send a second drive signal L2 to the third controllable power device Q3. The second drive signal L2 causes the third controllable power device Q3 to turn on. The turn on of the third controllable power device Q3 causes the first winding U and the third winding W to be connected and turned on. The control detection unit 10 can sample the second feedback signal F2 from the first winding U and the third winding W, and thus detect whether the first winding U and the third winding W and their connecting lines are abnormal based on the second feedback signal F2.

[0058] It should be noted that the driving signals described above can all be pulse signals or pulse width modulation signals, so that the cutoff and turn-on of controllable power devices can be controlled based on pulse signals.

[0059] As one possible implementation method, such as Figure 6 As shown, the control detection unit 10 includes a control component 110 and a sampling component 120. The sampling component 120 can be connected to the first terminal of the first controllable power device Q1, so as to obtain the first feedback signal F1 and / or the second feedback signal F2 by sampling the voltage of the first terminal of the first controllable power device Q1.

[0060] As one possible implementation method, such as Figure 6 As shown, based on the aforementioned drive component 130, the control detection unit 10 may include a first drive component 1310 and a second drive component 1320. The control component 110 is connected to the control terminal of the second controllable power device Q2 through the first drive component 1310, and the control component 110 is connected to the control terminal of the third controllable power device Q3 through the second drive component 1320.

[0061] In the above-described implementation, the control component 110 can send a first control signal N1 to the first drive component 1310, causing the first drive component 1310 to generate the aforementioned first drive signal L1 based on the first control signal N1; similarly, the control component 110 can send a second control signal N2 to the second drive component 1320, causing the second drive component 1320 to generate the aforementioned second drive signal L2 based on the second control signal N2.

[0062] In an optional implementation of this embodiment, such as Figure 6As shown, the conduction unit 20 may further include a diode D1 and a resistor R1. The anode of the diode D1 is connected to the level signal CH through the resistor R1, and the cathode of the diode D1 is connected to the first terminal of the first controllable power device Q1. Specifically, the diode D1 may be a fast recovery diode with a withstand voltage of 1200V or higher, thereby effectively blocking interference from the motor operation to the detection device. It should be noted that when the conduction unit 20 has a diode D1 and a resistor R1, the sampling component 120 may specifically sample the level at the anode of the diode D1 as a feedback signal.

[0063] In an optional implementation of this embodiment, such as Figure 7 As shown, the detection device may also include a power supply 30, which can supply power to the control component 110.

[0064] In an optional implementation of this embodiment, such as Figure 7 As shown, the detection device can also be connected to the elevator mainboard B. Specifically, the elevator mainboard B is electrically connected to the control component 110. The elevator mainboard B can interact with the control component 110. For example, if the control component 110 determines that there is an abnormal connection between the motor windings, it can upload an abnormal signal to the elevator mainboard B. The elevator mainboard B can control the elevator door to close and stop operation according to the abnormal signal, and send alarm prompts or SMS prompts to maintenance personnel, etc.

[0065] This embodiment uses Figure 6 The detection process of the detection device is described below, assuming that the level signal CH is a high-level signal:

[0066] The control component 110 first sends a first control signal N1 to the first drive component 1310. Based on the first control signal N1, the first drive component 1310 outputs a first drive signal L1 to the control terminal of the second controllable power device Q2, causing the second power device Q2 to conduct, thereby causing the first winding U and the second winding V to conduct. The sampling component 120 samples the voltage at the first terminal (FB) of the first controllable power device Q1 to obtain a first feedback signal F1. If the first winding U and the second winding V and their connecting lines are connected normally, due to the first terminal (FB) of the second controllable power device Q2, the first drive signal L1 will be generated. With both ends grounded, the level signal CH is transmitted to the ground terminal through the second controllable power device Q2. That is, the voltage at FB should be a low-level signal. Therefore, the control component 110 can determine whether the first winding U and the second winding V and their connecting lines are abnormal based on whether the first feedback signal F1 is a high-level signal or a low-level signal. If the first feedback signal F1 is a low-level signal, it means that the first winding U and the second winding V and their connecting lines are connected normally; if the first feedback signal F1 is a high-level signal, it means that the first winding U and the second winding V and their connecting lines are abnormal.

[0067] Based on the above detection, the control component 110 can stop sending the first control signal N1 and send the second control signal N2 to the second drive component 1320, causing the second drive component 1320 to output the second drive signal L2 to the control terminal of the third controllable power device Q3 based on the second control signal N2, thereby turning on the third controllable power device Q3 and causing the first winding U and the third winding W to conduct. The sampling component 120 samples the voltage at the first terminal (FB) of the first controllable power device Q1 to obtain the second feedback signal F2. If the first winding U and the third winding W and their connecting lines are connected normally, since the second terminal of the third controllable power device Q3 is grounded... The level signal CH is transmitted to the ground terminal through the third controllable power device Q3. That is, the voltage at FB should be a low level signal. Therefore, the control component 110 can determine whether the first winding U and the third winding W and their connecting lines are abnormal based on whether the second feedback signal F2 is a high level signal or a low level signal. If the second feedback signal F2 is a low level signal, it means that the first winding U and the third winding W and their connecting lines are connected normally. At this time, if the aforementioned first feedback signal F1 is a low level signal, it means that all three phase windings of the motor are connected normally. At this time, if the aforementioned first feedback signal F1 is a high level signal, it means that the second winding V is connected abnormally.

[0068] If the second feedback signal F2 is a high-level signal, it indicates that the connection between the first winding U and the third winding W is abnormal. At this time, if the aforementioned first feedback signal F1 is a low-level signal, it is determined that the second winding V and its connecting wires are abnormal. If the aforementioned first feedback signal F1 is a high-level signal, it indicates that the entire motor is abnormal.

[0069] It should be noted that the above-described testing process involves first testing the first winding U and the second winding V, followed by testing the first winding U and the third winding W. Alternatively, this scheme can first test the first winding U and the third winding W, and then test the first winding U and the second winding V. The specific order can be adjusted adaptively according to actual circumstances, and all of these adjustments are within the scope of protection of this application.

[0070] This solution provides a detection method that can be applied to the control detection unit in the aforementioned detection device, such as... Figure 8 As shown, this detection method can be implemented in the following ways, including:

[0071] Step S800: Send a drive signal to the conduction unit so that the conduction unit connects and conducts at least two target windings in the three-phase windings according to the drive signal.

[0072] Step S810: Sample feedback signals from at least two target windings.

[0073] Step S820: Detect whether at least two target windings and their connecting lines are abnormal based on the feedback signal.

[0074] In the above embodiments, the control detection unit is the control detection unit 10 in the detection device described above, and the conduction unit is the conduction unit 20 in the detection device described above. The drive signal is used to drive the conduction unit to connect and conduct at least two target windings in the three-phase winding. The drive signal may specifically include a level signal, a pulse signal, etc. The three-phase winding may be the three-phase winding in a three-phase motor, and may specifically include a first winding U, a second winding V, and a third winding W.

[0075] After driving at least two target windings to connect and conduct, this method can sample feedback signals from at least two target windings. These feedback signals characterize the connection status of the at least two target windings that are connected and conducting, and then detect whether the at least two target windings and their connecting lines are abnormal based on the feedback signals.

[0076] The detection method described above first sends a drive signal to the conduction unit, causing the conduction unit to connect and conduct at least two target windings in the three-phase windings. Then, it samples the feedback signals from the at least two target windings and detects whether the at least two target windings and their connecting lines are abnormal based on the feedback signals. This allows for timely alarm and repair when there is an abnormal connection between the three-phase windings, improving the reliability and safety of elevator operation and ensuring the safe use of the motor star-sealing function.

[0077] As one possible implementation, the conducting unit includes a first controllable power device, a second controllable power device, and a third controllable power device, as described above. Figure 5 or Figure 6 Based on this, the solution can be tested in the following ways, such as... Figure 9 As shown, it includes:

[0078] Step S900: Send a first drive signal to the control terminal of the second controllable power device to drive the second controllable power device to conduct, so that the first winding and the second winding are connected and conducted.

[0079] Step S910: Sample the first feedback signal from the first winding and the second winding.

[0080] Step S920: Determine whether the first feedback signal is a preset level signal. If yes, proceed to steps S930 to S980; otherwise, proceed to steps S1000 to S1040.

[0081] Step S930: Confirm that the connection between the first winding and the second winding is normal.

[0082] Step S940: Stop the first drive signal and send a second drive signal to the control terminal of the third controllable power device to drive the third controllable power device to conduct, so that the first winding and the third winding are connected and conducting.

[0083] Step S950: Sample the second feedback signal from the first winding and the third winding.

[0084] Step S960: Determine whether the second feedback signal is a preset level signal. If yes, proceed to step S970; otherwise, proceed to step S980.

[0085] Step S970: Confirm that the three-phase windings of the motor are connected normally.

[0086] Step S980: Determine if the third winding connection is abnormal.

[0087] Step S1000: Stop the first drive signal and send a second drive signal to the control terminal of the third controllable power device to drive the third controllable power device to conduct, so that the first winding and the third winding are connected and conducted.

[0088] Step S1010: Sample the third feedback signal from the first winding and the third winding.

[0089] Step S1020: Determine whether the third feedback signal is a preset level signal. If yes, proceed to step S1030; otherwise, proceed to step S1040.

[0090] Step S1030: Determine that the second winding connection is abnormal.

[0091] Step S1040: Determine that the entire motor is malfunctioning.

[0092] In the above embodiment, the method first sends a first drive signal to the control terminal of the second controllable power device. The first drive signal drives the second controllable power device to conduct, causing the first winding U and the second winding V to be connected and conducted. When the first winding U and the second winding V are connected and conducted, the method samples the first feedback signal F1 from the first winding and the second winding, and determines whether the first feedback signal F1 is a preset level signal (such as the low level signal described above). If the first feedback signal F1 is a preset level signal, it indicates that there is no abnormality in the first winding U, the second winding V and their connecting lines.

[0093] If the first winding U and the second winding V are confirmed to be normal, this method stops the first drive signal and sends a second drive signal to the control terminal of the third controllable power device Q3 to connect the first winding U and the third winding W. When the first winding U and the third winding W are connected, this method samples the second feedback signal F2 from the first winding U and the third winding W and determines whether the second feedback signal F2 is a preset level signal. If the second feedback signal F2 is a preset level signal, it means that the first winding U, the second winding V, and the third winding W and their connecting lines are all normal, that is, the entire motor is normal. If the second feedback signal F2 is not a preset level signal, it means that the connection between the first winding U and the second winding V is normal, but the connection between the first winding U and the third winding W is abnormal, then it is determined that the third winding W and its connecting lines are abnormal.

[0094] If an anomaly is detected in the first winding U and the second winding V, this solution can also stop the first drive signal and send a second drive signal to the control terminal of the third controllable power device to cause the first winding U and the third winding W to connect and conduct. When the first winding U and the third winding W are connected and conducting, this method samples the third feedback signal F3 from the first winding U and the third winding W and determines whether the third feedback signal F3 is a preset level signal. If the third feedback signal F3 is a preset level signal, it indicates that the connection between the first winding U and the third winding W is normal, and the connection between the first winding U and the second winding V is abnormal, thus determining that the second winding V is abnormal. If the third feedback signal F3 is not a preset level signal, it indicates that the connection between the first winding U and the second winding V is abnormal, the connection between the first winding U and the third winding W is abnormal, and thus the entire motor is abnormal.

[0095] The first feedback signal F1, the second feedback signal F2, and the third feedback signal F3 mentioned above can all be obtained by sampling the voltage at the first terminal of the first controllable power device.

[0096] According to some embodiments of this application, such as Figure 10 As shown, this application provides an electronic device 1000, including: a processor 1001 and a memory 1002. The processor 1001 and the memory 1002 are interconnected and communicate with each other through a communication bus 1003 and / or other forms of connection mechanism (not shown). The memory 1002 stores a computer program executable by the processor 1001. When the computing device is running, the processor 1001 executes the computer program to perform the method of any of the optional embodiments of the aforementioned implementation, such as steps S800 to S820: sending a drive signal to the conduction unit so that the conduction unit connects and conducts at least two target windings in the three-phase winding according to the drive signal; sampling feedback signals from at least two target windings; and detecting whether at least two target windings and their connection lines are abnormal according to the feedback signals.

[0097] This application provides a computer-readable storage medium storing a computer program that, when executed by a processor, performs the method of any of the aforementioned optional embodiments.

[0098] The storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Red-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0099] This application provides a computer program product that, when run on a computer, causes the computer to perform the method of any of the aforementioned optional embodiments.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A detection device, characterized in that, The detection device is used to detect the windings of a motor with a star-sealing function. The device includes a control detection unit and a conduction unit. The control detection unit is electrically connected to the conduction unit, and the conduction unit is used to electrically connect to the three-phase windings of the three-phase motor. The control detection unit is used to send a drive signal to the conduction unit; The conducting unit is used to connect and conduct at least two target windings in the three-phase windings according to the driving signal. The control detection unit is also used to detect whether there are any abnormalities in the at least two target windings and their connecting lines.

2. The apparatus according to claim 1, characterized in that, The control and detection unit includes a control component and a sampling component, wherein the control component is electrically connected to the sampling component, and the sampling component is electrically connected to the conduction unit; The sampling component is used to sample feedback signals from the at least two target windings and transmit the feedback signals to the control component after the conduction unit drives at least two target windings to be connected and turned on. The control component is used to detect whether there is any abnormality in the at least two target windings and their connecting lines based on the feedback signal.

3. The apparatus according to claim 2, characterized in that, The control and detection unit further includes a drive component, the control component is electrically connected to the drive component, and the drive component is electrically connected to the conduction unit; The control component is used to send control signals to the drive component; The driving component is used to send a driving signal corresponding to the control signal to the conducting unit according to the control signal, so as to drive the conducting unit to connect and conduct at least two target windings in the three-phase winding.

4. The apparatus according to claim 3, characterized in that, The conducting unit includes a first controllable power device, a second controllable power device, and a third controllable power device; The first terminal of the first controllable power device is connected to a level signal and the first winding of the three-phase winding, the first terminal of the second controllable power device is connected to the second winding of the three-phase winding, and the first terminal of the third controllable power device is connected to the third winding of the three-phase winding. The second terminals of the first controllable power device, the second controllable power device, and the third controllable power device are all grounded. The control terminals of the first controllable power device, the second controllable power device, and the third controllable power device are all electrically connected to the control and detection unit.

5. The apparatus according to claim 4, characterized in that, The sampling component is connected to the first terminal of the first controllable power device to sample the voltage at the first terminal of the first controllable power device as the feedback signal.

6. The apparatus according to claim 4, characterized in that, The driving component includes a first driving element and a second driving element. The control component is connected to the control terminal of the second controllable power device through the first driving element, and the control component is connected to the control terminal of the third controllable power device through the second driving element. The first driving element is configured to generate a first driving signal when it receives a control signal sent by the control component, so as to drive the second controllable power device to conduct, thereby connecting the first winding and the second winding. The second driving element is used to generate a second driving signal when it receives a control signal sent by the control component, so as to drive the third controllable power device to conduct, so that the first winding and the third winding are connected and conducted.

7. A detection method, characterized in that, The method is applied to a motor winding detection device, the device including a control detection unit and a continuity unit, the control detection unit being electrically connected to the continuity unit, the continuity unit being used for electrical connection to the three-phase windings of a three-phase motor, and the method comprising: A drive signal is sent to the conduction unit so that the conduction unit connects and conducts at least two target windings in the three-phase winding according to the drive signal; The sampling originates from feedback signals from the at least two target windings; The system detects whether the at least two target windings and their connecting lines are abnormal based on the feedback signal.

8. The method according to claim 7, characterized in that, The conduction unit includes a first controllable power device, a second controllable power device, and a third controllable power device. The first terminal of the first controllable power device is connected to a high-level signal and the first winding of a three-phase winding, respectively. The first terminal of the second controllable power device is connected to the second winding of the three-phase winding, and the first terminal of the third controllable power device is connected to the third winding of the three-phase winding. The second terminals of the first, second, and third controllable power devices are all grounded. The control terminals of the first, second, and third controllable power devices are all electrically connected to the control detection unit. Sending a drive signal to the conduction unit includes: Send a first drive signal to the control terminal of the second controllable power device to drive the second controllable power device to conduct, so that the first winding and the second winding are connected and conducted. The sampling originates from the feedback signals of the at least two target windings, including: The sampling originates from the first feedback signal of the first winding and the second winding; The step of detecting whether the at least two target windings and their connecting lines are abnormal based on the feedback signal includes: Determine whether the first feedback signal is a preset level signal; If the first feedback signal is a preset level signal, then it is determined that the connection between the first winding and the second winding is normal.

9. The method according to claim 8, characterized in that, After determining that the connection between the first winding and the second winding is normal, the method further includes: Stop the first drive signal and send a second drive signal to the control terminal of the third controllable power device to drive the third controllable power device to conduct, so that the first winding and the third winding are connected and conducted. The sampling is based on the second feedback signal from the first winding and the third winding; Determine whether the second feedback signal is a preset level signal; If the second feedback signal is a preset level signal, then it is determined that the three-phase winding connection of the motor is normal.

10. The method according to claim 9, characterized in that, After determining whether the second feedback signal is a preset level signal, the method further includes: If the second feedback signal is not a preset level signal, then the third winding connection is determined to be abnormal.

11. The method according to claim 8, characterized in that, After determining whether the first feedback signal is a preset level signal, the method further includes: If the first feedback signal is not a preset level signal, then the first drive signal is stopped, and a second drive signal is sent to the control terminal of the third controllable power device to drive the third controllable power device to conduct, so that the first winding and the third winding are connected and conducted. The sampling is based on the third feedback signal from the first winding and the third winding; Determine whether the third feedback signal is a preset level signal; If the third feedback signal is a preset level signal, then the second winding connection is determined to be abnormal.

12. The method according to claim 8, characterized in that, The sampling originates from the first feedback signal of the first winding and the second winding, including: When the first winding and the second winding are connected and conducting, the voltage at the first terminal of the first controllable power device is sampled to obtain the first feedback signal.

13. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the method of any one of claims 7 to 12.

14. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the method of any one of claims 7 to 12.

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