Soft starter detection device and method

Abstract

The invention discloses a soft starter detection device and method. The device comprises: a control module, which is used to control the working mode of the soft starter detection device and control the power supply of the soft starter; a power supply module, which is used to provide 230VAC power electricity and 24VDC control electricity to the soft starter in the running mode; a detection module, which is used to detect the soft starter when it is working in the running mode to determine whether the running state of the soft starter is normal; and a test module, which is used to test the rectifier bridge function, the power chip function and whether the power chip function is damaged by switch control in the test mode, or to test whether the forward voltage drive circuit and the forward voltage detection circuit function of the soft starter are damaged, or to test the negative voltage drive circuit and the negative voltage detection circuit function of the soft starter.

Description

Technical Field

[0001] The present invention relates to the field of computer technology, and in particular to a soft starter detection device and method. Background Art

[0002] Soft starters are widely used in smooth starting control of motors. Anti-parallel thyristors are connected in series between the AC power supply and the motor. The electronic switching characteristics of the thyristor are used to control the gate trigger pulse through the control chip in the soft starter to change the conduction degree of the thyristor, thereby changing the voltage applied to the stator winding. When the conduction angle of the thyristor starts to rise from 00, the motor starts to start. As the conduction angle increases, the output voltage of the thyristor gradually increases, and the motor begins to accelerate until the voltage output reaches the rated voltage, the bypass contactor of the soft starter is activated, and the motor runs at full voltage.

[0003] After a lot of practice, it is found that the soft starter equipment failures are generally caused by the power supply circuit (damage to the 24VDC rectifier bridge, 24VDC power chip, and 5VDC power chip) and the thyristor drive circuit and the detection circuit optical coupler failure, etc. Therefore, there is an urgent need for a technical solution that can perform load operation and related tests on the soft starter. Summary of the invention

[0004] The object of the present invention is to provide a soft starter detection device and method, aiming to solve the above-mentioned problems in the prior art.

[0005] The present invention provides a soft starter detection device, comprising:

[0006] A control module connected to the power supply module and the soft starter, used to control the working mode of the soft starter detection device and control the power supply of the soft starter, wherein the working mode specifically includes: an operation mode and a test mode;

[0007] A power supply module is connected to the soft starter and the control module, and is used to provide 230VAC power and 24VDC control power to the soft starter in the operation mode;

[0008] The detection module is connected to the soft starter and is used to detect the soft starter when it is working in the operation mode to determine whether the operation state of the soft starter is normal;

[0009] The test module is connected to the soft starter and is used to test the rectifier bridge function, the power chip function and whether the power chip function of the soft starter is damaged through switch control in the test mode, or to test whether the forward voltage drive circuit and the forward voltage detection circuit function of the soft starter are damaged, or to test the negative voltage drive circuit and the negative voltage detection circuit function of the soft starter.

[0010] The present invention provides a soft starter detection method, comprising:

[0011] The working mode of the soft starter detection device is set by the control module, and the power supply of the soft starter is controlled, wherein the working mode specifically includes: an operation mode and a test mode;

[0012] In the operation mode, the power supply module provides 230VAC power and 24VDC control power to the soft starter; and the detection module detects the soft starter in the working state to determine whether the operation state of the soft starter is normal;

[0013] In the test mode, the test module controls the switch to test the rectifier bridge function, the power chip function and whether the power chip function of the soft starter is damaged, or to test whether the forward voltage drive circuit and the forward voltage detection circuit function of the soft starter are damaged, or to test the negative voltage drive circuit and the negative voltage detection circuit function of the soft starter.

[0014] By adopting the embodiment of the present invention, the soft starter has the function of carrying out load operation and testing, and an effective detection method is provided for its power supply circuit (damage to the 24VDC rectifier bridge, the 24VDC power chip, and the 5VDC power chip) as well as the thyristor drive circuit and the detection circuit. The invention has the characteristics of simple operation, accurate fault diagnosis, and built-in precise digital voltage display.

[0015] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 is a schematic diagram of a soft starter detection device according to an embodiment of the present invention;

[0018] Figure 2 is a schematic diagram of a real object of a soft starter detection device according to an embodiment of the present invention;

[0019] Figure 3 is a schematic diagram of a soft starter power supply circuit board according to an embodiment of the present invention;

[0020] Figure 4 is a circuit board schematic diagram of a soft starter drive and detection circuit according to an embodiment of the present invention;

[0021] Figure 5 is an electrical schematic diagram of a soft starter detection device according to an embodiment of the present invention;

[0022] Figure 6 is an operation flow chart of a soft starter detection device according to an embodiment of the present invention;

[0023] Figure 7 4 is a flow chart of a soft starter detection method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of 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.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Device Embodiment

[0028] According to an embodiment of the present invention, a soft starter detection device is provided. Figure 1 Schematic diagram of a soft starter detection device according to an embodiment of the present invention. Figure 1 As shown, the soft starter detection device according to the embodiment of the present invention specifically includes:

[0029] The control module (also referred to as the control loop) 10 is connected to the power supply module and the soft starter, and is used to control the working mode of the soft starter detection device and control the power supply of the soft starter, wherein the working mode specifically includes: an operation mode and a test mode; the control module 10 specifically includes: a switch S1, a switch S2, a contactor K1, and an indicator light H7, wherein the switch S2 is used to select a common working state, the indicator light H7 is connected in parallel with the contactor K1, and is used to indicate the state of the control module, the contacts of the contactor K1 are connected to the power supply circuit of the soft starter, and control the power supply of the soft starter, and the switch S1 is connected to the soft starter, and is used to control the start signal of the soft starter.

[0030] The power supply module (also called the power supply circuit) 12 is connected to the soft starter and the control module, and is used to provide 230VAC power and 24VDC control power to the soft starter in the operating mode; the power supply module 12 specifically includes: a 230VAC power supply is connected to the soft starter through the switch "F0", one of which is connected to the soft starter to provide power supply, and the other is connected to the switching power supply of the soft starter to provide control power supply.

[0031] The detection module (also referred to as a state detection circuit) 14 is connected to the soft starter and is used to detect the soft starter when it is working in the operation mode to determine whether the operation state of the soft starter is normal; the detection module 14 specifically includes:

[0032] A digital AC voltmeter V1, a digital AC voltmeter V2, a load lamp H1, and a load lamp H2, wherein the digital AC voltmeter V1 and the digital AC voltmeter V2 are respectively connected to the soft starter, the load lamp H1 is connected in parallel with the digital AC voltmeter V1, and the load lamp H2 is connected in parallel with the digital AC voltmeter V2.

[0033] The test module (also referred to as a test circuit) 16 is connected to the soft starter and is used to test the rectifier bridge function, the power chip function and whether the power chip function of the soft starter is damaged by switch control in the test mode, or to test whether the forward voltage drive circuit and the forward voltage detection circuit function of the soft starter are damaged, or to test the negative voltage drive circuit and the negative voltage detection circuit function of the soft starter. The test module 16 is specifically used for:

[0034] By measuring whether there is 24VDC at the LINE VOLTAGE end of the 24VDC power chip, you can determine whether the 24VDC rectifier bridge is damaged. By measuring whether there is 24VDC at the VREG end of the 24VDC power chip, you can determine whether the 24VDC power chip is damaged. By measuring whether there is 5VDC at the VREG end of the 5VDC power chip, you can determine whether the 5VDC power chip is damaged. Or,

[0035] Through PLC-12 and GND, the drive circuit is turned on to drive thyristor D31 / D32, 24VDC is given between UV and WV, through PLC-12 and GND, the UV and WV circuit voltages are measured to determine whether the forward voltage drive circuit of the soft starter is faulty, 24VDC is given between UV and WV, through ULN-16 and GND, the UV and WV circuit voltages are measured to determine whether the forward voltage detection circuit function is damaged; or,

[0036] Through PLC-11 and GND, the drive circuit is turned on to drive thyristors D11 / D12, 24VDC is given between VU and VW, and through PLC-11 and GND, the UV and WV circuit voltages are measured to see if they are normal, and it is determined whether the negative voltage drive circuit of the soft starter is faulty; 24VDC is given between UV and WV, and through ULN-16 and GND, the UV and WV circuit voltages are measured to see if they are normal, and it is determined whether the negative voltage detection circuit function is damaged.

[0037] The above technical solution of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.

[0038] Figure 2 It is a schematic diagram of a soft starter detection device of an embodiment of the present invention, through which the soft starter can be operated with load and related tests. Specifically, the "soft starter power cable (input)", "soft starter power cable (output)" and "soft starter signal cable" are connected to the soft starter, the "power socket" of the device is supplied with 230VAC mains, the relevant buttons (or knobs) are operated, and the changes of the relevant indicator lights and voltmeters are observed, and the soft starter can be operated with load and related tests.

[0039] In the embodiment of the present invention, there are two working modes: operation mode and test mode.

[0040] 1. Operation mode:

[0041] To test the running status of the soft starter, it is necessary to provide the soft starter with 230VAC power and 24VDC control power. Then, the working condition of the soft starter is detected through the detection circuit to determine whether the running status of the soft starter is normal. A 230VAC power supply is designed to be connected to the system through the switch "F0", one to the soft starter to provide power supply, and one to the switch power supply to provide control power supply. The control circuit is composed of the switch "S2" and the contactor "K1" coil. At the same time, the indicator light "H7" indicates the state of the control circuit. The contactor "K1" contact is connected to the soft starter power supply circuit, and the soft starter power supply is controlled by the control circuit. The soft starter start signal is controlled by the "S1" switch. The soft starter operation detection is indicated by the digital display AC voltmeter "V1" and "V2" and the "H1" and "H2" load lights. Figure 1 shown.

[0042] 2. Test mode principle:

[0043] Soft starter power supply circuit test:

[0044] Soft starter circuit diagram Figure 3 As shown, 24VDC power is supplied to X2 and X1. Whether the 24VDC rectifier bridge is damaged can be determined by measuring whether there is 24VDC at the "LINE VOLTAGE" end of the "24VDC power chip". Whether the 24VDC power chip is damaged can be determined by measuring whether there is 24VDC at the "VREG" end of the "24VDC power chip". Whether the 5VDC power chip is damaged can be determined by measuring whether there is 5VDC at the "VREG" end of the "5VDC power chip". In order to test the rectifier bridge function, power chip function and power chip function of the soft starter, a 24VDC power supply and a voltage detection circuit are required. A 230VAC power supply is designed to supply power to the switching power supply "T0" through the switch "F0", and "T0" provides 24 power to the soft starter. A DC voltmeter detection circuit is installed to measure the voltage of each port to make corresponding judgments.

[0045] Soft starter forward voltage drive test:

[0046] Soft starter circuit board schematic diagram (drive, detection circuit) as shown Figure 4As shown: the circuit board is connected to the drive circuit through PLC-12 and GND to turn on the drive thyristor D31 / D32. To detect whether the drive circuit is normal, 24VDC needs to be given between UV and WV. Through PLC-12 and GND, the UV and WV circuit voltages are measured to determine whether the forward drive of the drive circuit is faulty. To test whether the detection circuit is normal, 24VDC needs to be given between UV and WV. Through ULN-16 and GND, the UV and WV circuit voltages are measured to determine whether the forward detection circuit is faulty. In order to realize the function of testing the forward voltage drive circuit and the forward voltage detection circuit, a 24VDC power supply and a voltage detection circuit are required. A 230VAC power supply is designed to supply power to the switch power supply "T0" through the switch "F0". "T0" provides 24 power to the soft starter through the contactor K2. The K2 contactor is controlled by the S3 three-speed switch. The detection circuit is equipped with "H5" and "H6" signal lights.

[0047] Soft starter negative voltage drive test:

[0048] Soft starter circuit board schematic diagram (drive, detection circuit) as shown Figure 4 As shown, the circuit board conducts through PLC-11 and GND to turn on the drive circuit and drive thyristor D11 / D12. To detect whether the drive circuit is normal, 24VDC needs to be given between VU and VW. Through PLC-11 and GND, the UV and WV circuit voltages are measured to determine whether the negative drive of the drive circuit is faulty. To test whether the detection circuit is normal, 24VDC needs to be given between UV and WV. Through ULN-16 and GND, the UV and WV circuit voltages are measured to determine whether the negative detection circuit is faulty. In order to realize the function of testing the negative voltage drive circuit and the negative voltage detection circuit, a 24VDC power supply and a voltage detection circuit are required. A 230VAC power supply is designed to supply power to the switch power supply "T0" through switch "F0". "T0" provides 24 power to the soft starter through contactor K3. The K3 contactor is controlled by the S3 three-speed switch. The detection circuit is equipped with "H5" and "H6" signal lights.

[0049] The three functions of the test mode are controlled by the three-speed switch position selection of S3. The 0th gear controls the soft starter power supply circuit test, the 1st gear controls the K2 contactor to pull in for the soft starter positive voltage drive test, and the 2nd gear controls the K3 contactor to pull in for the soft starter negative voltage drive test. K2 and K3 have normally closed contacts connected to the other control circuit for interlocking settings, such as Figure 5 shown.

[0050] In order to rationally utilize resources, the same power supply circuit is used. The switching between the operation mode and the test mode is controlled by S2, and the interlocking setting is performed through the normally closed contacts of the K1 contactor and the K5 contactor in the control circuit. The detection circuit is switched by adding the contactor K4 contactor.

[0051] How to use the soft starter detection device Figure 6 As shown:

[0052] Soft starter wiring:

[0053] Connect the "soft starter power cable (input)", "soft starter power cable (output)" and "soft starter signal cable" to the soft starter.

[0054] Soft starter detection device power supply:

[0055] Supply 230VAC mains to the "power socket" of the device, close switch "F0", and "H3" ("ready" light) will light up.

[0056] Operation Mode:

[0057] 1) Turn "S2" ("mode selection" knob) to level 1, and "H7" ("operation mode" indicator light) will light up;

[0058] 2) Press "S1" ("Run" button);

[0059] 3) The "H1" and "H2" load lights gradually light up, and the voltage values ​​of the digital AC voltmeters "V1" and "V2" gradually increase until "H4" ("bypass" light) lights up. This state indicates that the load operation is normal.

[0060] Test Mode:

[0061] Turn “S2” (“mode selection” knob) to level 2, and “H8” (“test mode” indicator light) will light up.

[0062] 1) Soft starter power supply circuit test: Turn "S3" ("test voltage selection" knob) to level 0.

[0063] ①24VDC rectifier bridge function test

[0064] Connect the DC voltmeter cable to Figure 3 Check the "LINE VOLTAGE" (input voltage) and "COMMON" (common terminal) pins of the "24VDC power chip". If the voltmeter displays about 24VDC, it means that the 24VDC rectifier bridge is normal. If the voltmeter displays abnormal voltage, it means that the 24VDC rectifier bridge is damaged.

[0065] ②24VDC power chip function test

[0066] Connect the DC voltmeter cable to Figure 3 Check the "VREG" (output voltage) and "COMMON" (common terminal) pins of the "24VDC power chip". If the voltmeter displays about 24VDC, it means that the 24VDC power chip is normal. If the voltmeter displays abnormal voltage, it means that the 24VDC power chip is damaged.

[0067] ③5VDC power chip function test

[0068] Connect the DC voltmeter cable to Figure 3 Check the "VREG" (output voltage) and "COMMON" (common terminal) pins of the "5VDC power chip". If the voltmeter displays about 5VDC, it means that the 5VDC power chip is normal. If the voltmeter displays abnormal voltage, it means that the 5VDC power chip is damaged.

[0069] 2) Soft starter forward voltage drive test: Turn “S3” (“test voltage selection” knob) to level 1.

[0070] ①Forward voltage drive circuit test

[0071] Will Figure 4 The 3rd pin of the optocoupler IC300 in the circuit board is connected to the "signal ground" (see Figure 3 ) connection, if "H5" ("U phase drive circuit" indicator light) is on, it means that the U phase forward voltage drive circuit is normal. If "H5" is not on, it is necessary to measure the optocouplers IC300, IC301, and IC303 in the U phase drive circuit (use a DC voltmeter to measure the voltage between the optocoupler 4 and 6 pins and the "signal ground" respectively. If the voltage is 0VDC, the optocoupler is damaged).

[0072] Similarly, Figure 4 The 3rd pin of the optocoupler IC200 in the circuit board is connected to the "signal ground" (see Figure 3 ) connection. If "H6" ("W-phase drive circuit" indicator light) is on, it means that the W-phase forward voltage drive circuit is normal. If "H6" is not on, it is necessary to measure the optocouplers IC200, IC201, and IC202 in the W-phase drive circuit (use a DC voltmeter to measure the voltage between the optocoupler 4 and 6 pins and the "signal ground" respectively. If the voltage is 0VDC, the optocoupler is damaged).

[0073] ②Forward voltage detection circuit test

[0074] Remove the connection wire between the optocoupler and the "signal ground" of the circuit board in the previous step. Figure 4 The 3rd pin of the optocoupler IC305 in the circuit board is connected to the "signal ground" (see Figure 3) connection, if "H5" and "H6" are on, it means that the U-phase and W-phase forward voltage detection circuits are normal. If "H5" is not on, it is necessary to measure the optocouplers IC304, IC305, and IC302 in the U-phase detection circuit (use a DC voltmeter to measure the voltage between the optocoupler 4 and 6 pins and the "signal ground" respectively. If the voltage is 0VDC, the optocoupler is damaged). If "H6" is not on, it is necessary to measure the optocouplers IC203, IC204, and IC205 in the W-phase detection circuit (use a DC voltmeter to measure the voltage between the optocoupler 4 and 6 pins and the "signal ground" respectively. If the voltage is 0VDC, the optocoupler is damaged).

[0075] 3) Soft starter negative voltage drive test: Turn “S3” (“test voltage selection” knob) to level 2.

[0076] ①Negative voltage drive circuit test

[0077] Will Figure 4 The 3rd pin of the optocoupler IC300 in the circuit board is connected to the "signal ground" (see Figure 3 ) connection, if "H5" ("U phase drive circuit" indicator light) is on, it means that the U phase negative voltage drive circuit is normal. If "H5" is not on, it is necessary to measure the optocouplers IC300, IC301, and IC303 in the U phase drive circuit (use a DC voltmeter to measure the voltage between the optocoupler 4 and 6 pins and the "signal ground" respectively. If the voltage is 0VDC, the optocoupler is damaged).

[0078] Similarly, Figure 4 The 3rd pin of the optocoupler IC200 in the circuit board is connected to the "signal ground" (see Figure 3 ) connection. If "H6" ("W-phase drive circuit" indicator light) is on, it means that the W-phase negative voltage drive circuit is normal. If "H6" is not on, it is necessary to measure the optocouplers IC200, IC201, and IC202 in the W-phase drive circuit (use a DC voltmeter to measure the voltage between the optocoupler 4 and 6 pins and the "signal ground" respectively. If the voltage is 0VDC, the optocoupler is damaged).

[0079] ②Negative voltage detection circuit test

[0080] Remove the connection wire between the optocoupler and the "signal ground" of the circuit board in the previous step. Figure 4 The 3rd pin of the optocoupler IC305 in the circuit board is connected to the "signal ground" (see Figure 3) connection, if "H5" and "H6" are on, it means that the U-phase and W-phase negative voltage detection circuits are normal. If "H5" is not on, it is necessary to measure the optocouplers IC304, IC305, and IC302 in the U-phase detection circuit (use a DC voltmeter to measure the voltage between the optocoupler 4 and 6 pins and the "signal ground" respectively. If the voltage is 0VDC, the optocoupler is damaged). If "H6" is not on, it is necessary to measure the optocouplers IC203, IC204, and IC205 in the W-phase detection circuit (use a DC voltmeter to measure the voltage between the optocoupler 4 and 6 pins and the "signal ground" respectively. If the voltage is 0VDC, the optocoupler is damaged).

[0081] To sum up, with the help of the technical solution of the embodiment of the present invention, the present invention has the function of load operation and testing of the soft starter, and provides an effective detection method for its power supply circuit (24VDC rectifier bridge, 24VDC power supply chip, 5VDC power supply chip is damaged) and thyristor drive circuit, detection circuit. The invention has the characteristics of simple operation, accurate fault diagnosis, and built-in precise digital voltage display.

[0082] Method Embodiment

[0083] According to an embodiment of the present invention, a soft starter detection method is provided. Figure 7 is a schematic diagram of a soft starter detection method according to an embodiment of the present invention. Figure 7 As shown, the soft starter detection method according to an embodiment of the present invention specifically includes:

[0084] Step 701, setting the working mode of the soft starter detection device through the control module, and controlling the power supply of the soft starter, wherein the working mode specifically includes: operation mode and test mode; setting the working mode of the soft starter detection device through the control module, and controlling the power supply of the soft starter specifically includes:

[0085] The working state is selected through switch S2, the state of the control module is indicated by indicator light H7, the power supply circuit of the soft starter is connected through the contacts of contactor K1 to control the power supply of the soft starter, and the starting signal of the soft starter is controlled by switch S1.

[0086] Step 702, in the operation mode, the power supply module provides 230VAC power and 24VDC control power to the soft starter; and the detection module detects the soft starter in the working state to determine whether the operation state of the soft starter is normal; wherein the power supply module provides 230VAC power and 24VDC control power to the soft starter specifically includes:

[0087] The 230VAC power supply provided by the power supply module is connected through the switch "F0", one of which is connected to the soft starter to provide power supply, and the other is connected to the switch power supply of the soft starter to provide control power supply. The soft starter in working state is detected by the detection module to determine whether the running state of the soft starter is normal, which specifically includes:

[0088] The soft starter in working state is detected by using the digital display AC voltmeter V1, the digital display AC voltmeter V2, the load lamp H1, and the load lamp H2 to determine whether the running state of the soft starter is normal and indicate it.

[0089] Step 703, in the test mode, the test module controls the switch to test the rectifier bridge function, the power chip function and whether the power chip function of the soft starter is damaged, or to test whether the forward voltage drive circuit and the forward voltage detection circuit function of the soft starter are damaged, or to test the negative voltage drive circuit and the negative voltage detection circuit function of the soft starter.

[0090] Step 703 specifically includes:

[0091] By measuring whether there is 24VDC at the LINE VOLTAGE end of the 24VDC power chip, you can determine whether the 24VDC rectifier bridge is damaged. By measuring whether there is 24VDC at the VREG end of the 24VDC power chip, you can determine whether the 24VDC power chip is damaged. By measuring whether there is 5VDC at the VREG end of the 5VDC power chip, you can determine whether the 5VDC power chip is damaged. Or,

[0092] Through PLC-12 and GND, the drive circuit is turned on to drive thyristor D31 / D32, 24VDC is given between UV and WV, through PLC-12 and GND, the UV and WV circuit voltages are measured to determine whether the forward voltage drive circuit of the soft starter is faulty, 24VDC is given between UV and WV, through ULN-16 and GND, the UV and WV circuit voltages are measured to determine whether the forward voltage detection circuit function is damaged; or,

[0093] Through PLC-11 and GND, the drive circuit is turned on to drive thyristors D11 / D12, 24VDC is given between VU and VW, and through PLC-11 and GND, the UV and WV circuit voltages are measured to see if they are normal, and it is determined whether the negative voltage drive circuit of the soft starter is faulty; 24VDC is given between UV and WV, and through ULN-16 and GND, the UV and WV circuit voltages are measured to see if they are normal, and it is determined whether the negative voltage detection circuit function is damaged.

[0094] The embodiment of the present invention is a method embodiment corresponding to the above-mentioned device embodiment. The specific operation of each step can be understood by referring to the description of the device embodiment, which will not be repeated here.

[0095] It should be noted that the embodiments of the storage medium in this specification and the embodiments of the blockchain-based service provision method in this specification are based on the same inventive concept. Therefore, the specific implementation of this embodiment can refer to the aforementioned corresponding implementation of the blockchain-based service provision method, and the repeated parts will not be repeated.

[0096] The above is a description of a specific embodiment of the specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0097] In the 1930s, improvements to a technology could be clearly distinguished as hardware improvements (for example, improvements to circuit structures such as diodes, transistors, switches, etc.) or software improvements (improvements to method flows). However, with the development of technology, many improvements to method flows today can be regarded as direct improvements to hardware circuit structures. Designers almost always obtain the corresponding hardware circuit structure by programming the improved method flow into the hardware circuit. Therefore, it cannot be said that an improvement in a method flow cannot be implemented using a hardware entity module. For example, a programmable logic device (PLD) (such as a field programmable gate array (FPGA)) is such an integrated circuit whose logical function is determined by the user's programming of the device. Designers can "integrate" a digital system on a PLD by programming it themselves, without having to ask a chip manufacturer to design and produce a dedicated integrated circuit chip. Moreover, nowadays, instead of manually making integrated circuit chips, this kind of programming is mostly implemented by "logic compiler" software, which is similar to the software compiler used when developing and writing programs, and the original code before compilation must also be written in a specific programming language, which is called hardware description language (HDL). There is not only one HDL, but many kinds, such as ABEL (Advanced Boolean Expression Language), AHDL (Altera Hardware Description Language), Confluence, CUPL (Cornell University Programming Language), HDCal, JHDL (Java Hardware Description Language), Lava, Lola, MyHDL, PALASM, RHDL (Ruby Hardware Description Language), etc. The most commonly used ones are VHDL (Very-High-Speed ​​Integrated Circuit Hardware Description Language) and Verilog. Those skilled in the art should also know that it is only necessary to program the method flow slightly in the above-mentioned hardware description languages ​​and program it into the integrated circuit, and then it is easy to obtain the hardware circuit that implements the logic method flow.

[0098] The controller can be implemented in any appropriate manner, for example, the controller can take the form of a microprocessor or processor and a computer-readable medium storing a computer-readable program code (such as software or firmware) that can be executed by the (micro)processor, a logic gate, a switch, an application-specific integrated circuit (ASIC), a programmable logic controller, and an embedded microcontroller. Examples of controllers include, but are not limited to, the following microcontrollers: ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20, and Silicone Labs C8051F320. The memory controller can also be implemented as part of the control logic of the memory. Those skilled in the art also know that in addition to implementing the controller in a purely computer-readable program code manner, the controller can be implemented in the form of a logic gate, a switch, an application-specific integrated circuit, a programmable logic controller, and an embedded microcontroller by logically programming the method steps. Therefore, this controller can be considered as a hardware component, and the devices included therein for implementing various functions can also be regarded as structures within the hardware component. Or even, the devices for implementing various functions can be regarded as both software modules for implementing the method and structures within the hardware component.

[0099] The systems, devices, modules or units described in the above embodiments may be implemented by computer chips or entities, or by products with certain functions. A typical implementation device is a computer. Specifically, the computer may be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.

[0100] For the convenience of description, the above devices are described in terms of functions and are divided into various units. Of course, when implementing the embodiments of this specification, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0101] It should be understood by those skilled in the art that one or more embodiments of this specification may be provided as a method, system or computer program product. Therefore, one or more embodiments of this specification may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this specification may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0102] This specification is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of this specification. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0103] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0104] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0105] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0106] The memory may include non-permanent storage in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0107] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0108] 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 process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. 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 process, method, commodity or device including the elements.

[0109] One or more embodiments of the present specification may be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. One or more embodiments of the present specification may also be practiced in distributed computing environments where tasks are performed by remote processing devices connected through a communication network. In a distributed computing environment, program modules may be located in local and remote computer storage media, including storage devices.

[0110] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0111] The above description is only an embodiment of this document and is not intended to limit this document. For those skilled in the art, this document may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this document should be included in the scope of the claims of this document.

Claims

1. A soft starter detection device, characterized in that: include: A control module connected to the power supply module and the soft starter, used to control the working mode of the soft starter detection device and control the power supply of the soft starter, wherein the working mode specifically includes: an operation mode and a test mode; A power supply module is connected to the soft starter and the control module, and is used to provide 230VAC power and 24VDC control power to the soft starter in the operation mode; The detection module is connected to the soft starter and is used to detect the soft starter when it is working in the operation mode to determine whether the operation state of the soft starter is normal; The test module is connected to the soft starter and is used to test the rectifier bridge function, the power chip function and whether the power chip function of the soft starter is damaged by switch control in the test mode, or to test whether the forward voltage drive circuit and the forward voltage detection circuit function of the soft starter are damaged, or to test the negative voltage drive circuit and the negative voltage detection circuit function of the soft starter; the test module is specifically used for: By measuring whether there is 24VDC at the LINE VOLTAGE end of the 24VDC power chip, you can determine whether the 24VDC rectifier bridge is damaged. By measuring whether there is 24VDC at the VREG end of the 24VDC power chip, you can determine whether the 24VDC power chip is damaged. By measuring whether there is 5VDC at the VREG end of the 5VDC power chip, you can determine whether the 5VDC power chip is damaged. Or, Through PLC-12 and GND, the drive circuit is turned on to drive thyristor D31 / D32, 24VDC is given between UV and WV, through PLC-12 and GND, the UV and WV circuit voltages are measured to determine whether the forward voltage drive circuit of the soft starter is faulty, 24VDC is given between UV and WV, through ULN-16 and GND, the UV and WV circuit voltages are measured to determine whether the forward voltage detection circuit function is damaged; or, Through PLC-11 and GND, the drive circuit is turned on to drive thyristors D11 / D12, 24VDC is given between VU and VW, and through PLC-11 and GND, the UV and WV circuit voltages are measured to see if they are normal, and it is determined whether the negative voltage drive circuit of the soft starter is faulty; 24VDC is given between UV and WV, and through ULN-16 and GND, the UV and WV circuit voltages are measured to see if they are normal, and it is determined whether the negative voltage detection circuit function is damaged.

2. The device according to claim 1, characterized in that The power supply module specifically includes: A 230VAC power supply is connected to the soft starter through switch "F0", one of which is connected to the soft starter to provide power supply, and the other is connected to the switching power supply of the soft starter to provide control power supply.

3. The device according to claim 1, characterized in that The control module specifically includes: Switch S1, switch S2, contactor K1, and indicator light H7, wherein switch S2 is used to select the common working state, indicator light H7 is connected in parallel with contactor K1 to indicate the state of the control module, the contact of contactor K1 is connected to the power supply circuit of the soft starter to control the power supply of the soft starter, and switch S1 is connected to the soft starter to control the start signal of the soft starter.

4. The device according to claim 1, characterized in that The detection module specifically includes: A digital AC voltmeter V1, a digital AC voltmeter V2, a load lamp H1, and a load lamp H2, wherein the digital AC voltmeter V1 and the digital AC voltmeter V2 are respectively connected to the soft starter, the load lamp H1 is connected in parallel with the digital AC voltmeter V1, and the load lamp H2 is connected in parallel with the digital AC voltmeter V2.

5. A soft starter detection method, characterized in that: include: The working mode of the soft starter detection device is set by the control module, and the power supply of the soft starter is controlled, wherein the working mode specifically includes: an operation mode and a test mode; In the operation mode, the power supply module provides 230VAC power and 24VDC control power to the soft starter; and the detection module detects the soft starter in the working state to determine whether the operation state of the soft starter is normal; In the test mode, the test module controls the switch to test the rectifier bridge function, power chip function and whether the power chip function of the soft starter is damaged, or to test whether the forward voltage drive circuit and the forward voltage detection circuit function of the soft starter are damaged, or to test the negative voltage drive circuit and the negative voltage detection circuit function of the soft starter, specifically including: By measuring whether there is 24VDC at the LINE VOLTAGE end of the 24VDC power chip, you can determine whether the 24VDC rectifier bridge is damaged. By measuring whether there is 24VDC at the VREG end of the 24VDC power chip, you can determine whether the 24VDC power chip is damaged. By measuring whether there is 5VDC at the VREG end of the 5VDC power chip, you can determine whether the 5VDC power chip is damaged. Or, Through PLC-12 and GND, the drive circuit is turned on to drive thyristor D31 / D32, 24VDC is given between UV and WV, through PLC-12 and GND, the UV and WV circuit voltages are measured to determine whether the forward voltage drive circuit of the soft starter is faulty, 24VDC is given between UV and WV, through ULN-16 and GND, the UV and WV circuit voltages are measured to determine whether the forward voltage detection circuit function is damaged; or, Through PLC-11 and GND, the drive circuit is turned on to drive thyristors D11 / D12, 24VDC is given between VU and VW, and through PLC-11 and GND, the UV and WV circuit voltages are measured to see if they are normal, and it is determined whether the negative voltage drive circuit of the soft starter is faulty; 24VDC is given between UV and WV, and through ULN-16 and GND, the UV and WV circuit voltages are measured to see if they are normal, and it is determined whether the negative voltage detection circuit function is damaged.

6. The method according to claim 5, characterized in that The power supply module provides 230VAC power and 24VDC control power to the soft starter, including: The power supply module provides a 230VAC power supply connected through the switch "F0", one of which is connected to the soft starter to provide power supply, and the other is connected to the switching power supply of the soft starter to provide control power supply.

7. The method according to claim 5, characterized in that Setting the working mode of the soft starter detection device through the control module and controlling the power supply of the soft starter specifically includes: The working state is selected through switch S2, the state of the control module is indicated by indicator light H7, the power supply circuit of the soft starter is connected through the contacts of contactor K1 to control the power supply of the soft starter, and the starting signal of the soft starter is controlled by switch S1.

8. The method according to claim 5, characterized in that Detecting the soft starter in the working state by the detection module to determine whether the running state of the soft starter is normal specifically includes: The soft starter in working state is detected by using the digital display AC voltmeter V1, the digital display AC voltmeter V2, the load lamp H1, and the load lamp H2 to determine whether the running state of the soft starter is normal and indicate it.

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