Auxiliary testing device and equipment for four-wire system alternating current switch machine

Abstract

The invention discloses an auxiliary testing device and equipment for a four-wire system alternating current switch machine. The auxiliary testing device comprises power supply transmission units which are arranged in one-to-one correspondence with wiring cables, and wiring terminals which are arranged in one-to-one correspondence with the wiring cables; the N-phase power supply transmission unit is electrically connected between the N-phase output end of the alternating current power supply and the third wiring terminal; the A-phase power supply transmission unit is electrically connected between the A-phase output end of the AC power supply and the second wiring terminal; the B-phase power supply transmission unit is electrically connected between the B-phase output end of the AC power supply and the first wiring terminal; the C-phase power supply transmission unit is electrically connected between the C-phase output end of the AC power supply and the fourth wiring terminal; the control unit is used for obtaining the voltage signals of the power transmission units and detecting the fault conditions of the wiring cables according to the signal characteristics of the voltage signals, turnout errors of the four-wire system alternating current switch machine can be avoided, damage to the drive control system due to cable faults can be avoided, and economic losses can be effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit detection, and in particular to an auxiliary testing device and equipment for a four-wire AC switch. Background Art

[0002] Due to the complex external construction environment, excessive wiring, and significant human influence, four-wire AC switch machines in fully electronic interlocking stations inevitably encounter numerous problems during on-site commissioning or maintenance. Common faults include wiring errors, cable mix-ups, short circuits, and broken wires. As a result, serious faults such as board crashes, fuse damage, and equipment burnout can occur when the station's fully electronic equipment is powered on and running, causing significant economic losses. Summary of the Invention

[0003] The present invention provides an auxiliary test device for a four-wire AC point switch, which can detect the wiring condition of the four-wire AC point switch, thereby helping to avoid serious economic losses caused by wiring faults during formal operation.

[0004] According to one aspect of the present invention, an auxiliary test device for a four-wire AC point switch is provided, wherein the four-wire AC point switch includes four wiring cables, the four wiring cables being respectively a first wiring cable, a second wiring cable, a third wiring cable, and a fourth wiring cable. The auxiliary test device for the four-wire AC point switch includes: a power transmission unit provided in a one-to-one correspondence with each of the wiring cables, and a wiring terminal provided in a one-to-one correspondence with each of the wiring cables;

[0005] The power transmission units are respectively an N-phase power transmission unit, an A-phase power transmission unit, a B-phase power transmission unit, a C-phase power transmission unit and a control unit;

[0006] The connection terminals are respectively a first connection terminal, a second connection terminal, a third connection terminal and a fourth connection terminal;

[0007] The N-phase power transmission unit is electrically connected between the N-phase output end of the AC power supply and the third terminal;

[0008] The A-phase power transmission unit is electrically connected between the A-phase output terminal of the AC power supply and the second wiring terminal;

[0009] The B-phase power transmission unit is electrically connected between the B-phase output terminal of the AC power supply and the first wiring terminal;

[0010] The C-phase power transmission unit is electrically connected between the C-phase output terminal of the AC power supply and the fourth terminal;

[0011] The control unit is used to obtain the voltage signal of each power transmission unit and detect the fault condition of each connection cable according to the signal characteristics of each voltage signal.

[0012] Optionally, the A-phase power transmission unit includes a first sampling resistor, and the B-phase power transmission unit includes a second sampling resistor;

[0013] The first sampling resistor is electrically connected between the A-phase output terminal of the AC power supply and the second wiring terminal;

[0014] The second sampling resistor is electrically connected between the B-phase output terminal of the AC power supply and the first wiring terminal;

[0015] The control unit is configured to obtain a first sampling voltage across the first sampling resistor and a second sampling voltage across the second sampling resistor, and detect a fault condition of each of the wiring cables based on signal characteristics of the first sampling voltage and the second sampling voltage.

[0016] Optionally, the control unit is further configured to obtain a first amplitude and a first phase of the first sampled voltage, and obtain a second amplitude and a second phase of the second sampled voltage;

[0017] A fault condition of the patch cable is detected based on the first amplitude, the second amplitude, the first phase, and the second phase.

[0018] Optionally, the C-phase power transmission unit includes a third sampling resistor, and the N-phase power transmission unit includes a fourth sampling resistor;

[0019] The third sampling resistor is electrically connected between the C-phase output terminal of the AC power supply and the fourth wiring terminal;

[0020] The fourth sampling resistor is electrically connected between the N-phase output terminal of the AC power supply and the third wiring terminal;

[0021] The control unit is further configured to obtain a third sampling voltage across the third sampling resistor and a fourth sampling voltage across the fourth sampling resistor, and detect a fault condition of each of the wiring cables based on signal characteristics of the third sampling voltage and the fourth sampling voltage.

[0022] Optionally, the control unit is further configured to obtain a third amplitude and a third phase of the third sampled voltage, and to obtain a fourth amplitude and a fourth phase of the fourth sampled voltage;

[0023] A fault condition of each of the connection cables is detected according to the third amplitude, the fourth amplitude, the third phase, and the fourth phase.

[0024] Optionally, the control unit is further configured to obtain signal characteristics of the voltage signal of each of the power transmission units;

[0025] A fault condition of each of the connection cables is detected according to a signal characteristic of each of the voltage signals.

[0026] Optionally, the A-phase power transmission unit includes a first control switch, the B-phase power transmission unit includes a second control switch, the C-phase power transmission unit includes a third control switch, and the N-phase power transmission unit includes a fourth control switch;

[0027] The first control switch is electrically connected between the A-phase output terminal of the AC power supply and the second wiring terminal;

[0028] The second control switch is electrically connected between the B-phase output terminal of the AC power supply and the first wiring terminal;

[0029] The third control switch is electrically connected between the C-phase output terminal of the AC power supply and the fourth terminal;

[0030] The fourth control switch is electrically connected between the N-phase output end of the AC power supply and the third wiring terminal.

[0031] Optionally, in the four-wire AC switch machine, the first wiring cable is electrically connected to the U-phase winding, the second wiring cable is electrically connected to the V-phase winding, the third wiring cable is electrically connected to the N-phase terminal, and the fourth wiring cable is electrically connected to the W-phase winding;

[0032] When the connection terminals are correctly connected to the connection cables, the first connection terminal is electrically connected to the first connection cable, the second connection terminal is electrically connected to the second connection cable, the third connection terminal is electrically connected to the third connection cable, and the fourth connection terminal is electrically connected to the fourth connection cable.

[0033] Optionally, the auxiliary test device for the four-wire AC switch machine further includes: a human-computer interaction interface;

[0034] The human-computer interaction interface is electrically and / or communicatively connected to the control unit;

[0035] The human-computer interaction interface is used to obtain operation instructions and send the operation instructions to the control unit;

[0036] The control unit is further configured to, after determining a fault condition of each of the wiring cables, send the fault condition to the human-computer interaction interface;

[0037] The human-computer interaction interface is further configured to display the fault condition when the fault condition is received.

[0038] According to another aspect of the present invention, there is also provided an auxiliary test device for a four-wire AC point switch, comprising: a power supply board, a terminal board, at least two auxiliary test device card boards, and at least one of the above-mentioned auxiliary test devices for the four-wire AC point switch;

[0039] The auxiliary test device of the four-wire AC switch machine can be detachably fixed on the auxiliary test device card;

[0040] The power supply board is electrically connected to the AC power supply and the auxiliary test device card board, and the terminal board is electrically connected to the auxiliary test device card board.

[0041] An auxiliary testing device for a four-wire AC switch provided in an embodiment of the present invention includes a power transmission unit arranged in one-to-one correspondence with each wiring cable, and a wiring terminal arranged in one-to-one correspondence with each wiring cable. When each wiring terminal is electrically connected to each wiring cable of the four-wire AC switch, an AC power signal can be transmitted to the four-wire AC switch through each power transmission unit, and a voltage signal of each power transmission unit can be obtained by a control unit. The fault condition of each wiring cable is detected according to the signal characteristics of each voltage signal. This can avoid the problem of switch errors caused when controlling the four-wire AC switch to perform switch operations, and can avoid the drive control system used to drive the four-wire AC switch to perform switch operations from being damaged due to cable failure, and can avoid serious economic losses caused by switch errors and damage to the drive control system.

[0042] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0044] Figure 1 This is a structural schematic diagram of an auxiliary test device for a four-wire AC switch provided by an embodiment of the present invention;

[0045] Figure 2 1 is a structural schematic diagram of another auxiliary test device for a four-wire AC switch provided by an embodiment of the present invention;

[0046] Figure 3 1 is a structural schematic diagram of another auxiliary test device for a four-wire AC switch provided by an embodiment of the present invention;

[0047] Figure 4 1 is a structural schematic diagram of another auxiliary testing device for a four-wire AC switch provided by an embodiment of the present invention;

[0048] Figure 5 This is a structural diagram of another auxiliary test device for a four-wire AC switch provided by an embodiment of the present invention.

[0049] Figure 6 This is a structural diagram of another auxiliary test device for a four-wire AC switch provided by an embodiment of the present invention.

[0050] Figure 7 The present invention provides a schematic structural diagram of an auxiliary test device for a four-wire AC switch. DETAILED DESCRIPTION

[0051] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0052] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0053] Figure 1 FIG. 1 is a structural diagram of an auxiliary test device for a four-wire AC switch provided by an embodiment of the present invention. Figure 1As shown, the four-wire AC switch includes four wiring cables, which are respectively a first wiring cable X1, a second wiring cable X2, a third wiring cable X3 and a fourth wiring cable X4. The auxiliary test device 01 of the four-wire AC switch (hereinafter referred to as the auxiliary test device 01) includes: a power transmission unit 10 corresponding to each wiring cable, and a wiring terminal corresponding to each wiring cable; each power transmission unit is respectively an N-phase power transmission unit 11, an A-phase power transmission unit 12, a B-phase power transmission unit 13, a C-phase power transmission unit 14 and a control unit 15; each wiring terminal is respectively a first wiring terminal p1, a second wiring terminal p2 and a second wiring terminal p3. Sub-p2, the third terminal p3 and the fourth terminal p4; the N-phase power transmission unit 11 is electrically connected between the N-phase output end of the AC power supply 20 and the third terminal p3; the A-phase power transmission unit 12 is electrically connected between the A-phase output end of the AC power supply 20 and the second terminal p2; the B-phase power transmission unit 13 is electrically connected between the B-phase output end of the AC power supply 20 and the first terminal p1; the C-phase power transmission unit 14 is electrically connected between the C-phase output end of the AC power supply 20 and the fourth terminal p4; the control unit 15 is used to obtain the voltage signal of each power transmission unit 10 and detect the fault condition of each wiring cable according to the signal characteristics of each voltage signal.

[0054] Specifically, each wiring terminal is used to electrically connect to each wiring cable of the four-wire AC point switch M. When each power transmission unit 10 is electrically connected to each wiring cable of the four-wire AC point switch M through the corresponding wiring terminal, the AC power signal provided by the AC power supply 20 can be transmitted to each wiring cable of the four-wire AC point switch M through each power transmission unit 10. If the connection between each wiring terminal and each wiring cable is correct, and each wiring cable is not short-circuited or broken, each wiring cable will form two corresponding power circuits between the power transmission unit 10 and the AC power supply 20. That is, when the four-wire AC point switch M is in the right position (also called the positioning position), two power circuits corresponding to the positioning position are formed. When the four-wire AC point switch M is in the left position (also called the reverse position), two power circuits corresponding to the reverse position are formed. Since the auxiliary test device 01 and each wiring cable need to be electrically connected with a cable of a certain length, the signal characteristics of the voltage signal will be different when the four-wire AC switch M is in different positions. For example, the amplitude and phase of the voltage signal will be different. It is possible to determine whether a corresponding power-on circuit is formed by the amplitude of the voltage signal on each power transmission unit 10, and detect the current position of the four-wire AC switch M based on the signal characteristics of the amplitude and phase of each voltage signal, thereby realizing the detection of fault conditions of the wiring cables.

[0055] Among them, the fault conditions of the wiring cables may include mixed connections between the wiring terminals and the wiring cables, at least two wiring cables being short-circuited, at least one wiring cable being broken, etc. Mixed connections between the wiring terminals and the wiring cables will cause the actual rotation direction of the four-wire AC switch M to be inconsistent with the set rotation direction, resulting in a turnout error, which can easily cause serious economic losses. Short circuits between the wiring cables will cause a short circuit fault in the drive control system, and a break in the wiring cables will make it impossible to drive the four-wire AC switch M to rotate. Therefore, the auxiliary test device 01 can be used to accurately detect the wiring conditions of the wiring cables, so that timely adjustments can be made when there is a fault in the wiring, which can avoid the problem of turnout errors when controlling the four-wire AC switch to perform turnout operations, and can avoid serious economic losses caused by turnout errors.

[0056] In addition, short circuits between the wiring cables can cause a short circuit fault in the drive control system used to drive the AC switch machine to achieve turnout operation. A broken wiring cable can prevent the four-wire AC switch machine M from rotating, thus preventing turnout operation. Therefore, when detecting cable faults, the auxiliary test device 01 can be used to drive the four-wire AC switch machine M first. If there is a short circuit between the wiring cables, the auxiliary test device 01 will short circuit, thus avoiding direct drive control system operation to drive the four-wire AC switch machine M for turnout operation, which could damage the drive control system. Because the drive control system for controlling the four-wire AC switch machine M for turnout operation is highly integrated and expensive, using the auxiliary test device to detect cable faults before turnout operation can also effectively reduce economic losses.

[0057] An auxiliary testing device for a four-wire AC switch provided in an embodiment of the present invention includes a power transmission unit arranged in one-to-one correspondence with each wiring cable, and a wiring terminal arranged in one-to-one correspondence with each wiring cable. When each wiring terminal is electrically connected to each wiring cable of the four-wire AC switch, an AC power signal can be transmitted to the four-wire AC switch through each power transmission unit, and a voltage signal of each power transmission unit can be obtained by a control unit. The fault condition of each wiring cable is detected according to the signal characteristics of each voltage signal. This can avoid the problem of switch errors caused when controlling the four-wire AC switch to perform switch operations, and can avoid the drive control system used to drive the four-wire AC switch to perform switch operations from being damaged due to cable failure, and can avoid serious economic losses caused by switch errors and damage to the drive control system.

[0058] For example, Figure 2 1 is a structural diagram of another auxiliary test device for a four-wire AC switch provided by an embodiment of the present invention. Figure 3This is a structural diagram of another auxiliary test device for a four-wire AC switch provided by an embodiment of the present invention, combined with reference to Figure 2 and Figure 3 In the four-wire AC switch machine M, the first wiring cable X1 is electrically connected to the U-phase winding, the second wiring cable X2 is electrically connected to the V-phase winding, the third wiring cable X3 is electrically connected to the N-phase terminal, and the fourth wiring cable X4 is electrically connected to the W-phase winding; when the wiring terminals are correctly connected to the wiring cables, the first wiring terminal p1 is electrically connected to the first wiring cable X1, the second wiring terminal p2 is electrically connected to the second wiring cable X2, the third wiring terminal p3 is electrically connected to the third wiring cable X3, and the fourth wiring terminal p4 is electrically connected to the fourth wiring cable X4.

[0059] The four-wire AC switch machine M includes two switch switches, namely the first switch switch M1 and the second switch switch M2. The first switch switch M1 includes a left first contact a1, a left second contact a2, a right first contact b1 and a right second contact b2. The left first contact a1 is electrically connected to the right first contact b1. When the first switch switch M1 is in the right position (such as Figure 3 As shown), the first right contact b1 and the second right contact b2 are connected. When the first switch M1 is in the left position (as shown), Figure 2 As shown), the left first contact a1 is connected to the left second contact a2. Similarly, the second switch M2 includes the left third contact a3, the left fourth contact a4, the right third contact b3 and the right fourth contact b4. The left third contact a3 is electrically connected to the right third contact b3. When the second switch M2 is in the right position (as shown), the left first contact a1 is connected to the left second contact a2. Similarly, the second switch M2 includes the left third contact a3, the left fourth contact a4, the right third contact b3 and the right fourth contact b4. Figure 3 As shown), the third right contact b3 and the fourth right contact b4 are connected. When the second turnout switch M2 is in the left position (as shown), Figure 2 As shown in FIG1 , the left third contact a3 is electrically connected to the left fourth contact a4. The right second contact b2 of the first switch M1 is electrically connected to the left fourth contact a4 of the second switch M2, and the left second contact a2 of the first switch M1 is electrically connected to the right fourth contact b4 of the second switch M2.

[0060] Wherein, each wiring cable can be electrically connected to each contact of the first switch M1 and the second switch M2 respectively. For example, the first wiring cable X1 is electrically connected to the third contact a3 of the left position of the second switch M2 through the U-phase winding, the second wiring cable X2 is electrically connected to the first contact b1 of the right position of the first switch M1 through the V-phase winding, the third wiring cable X3 is electrically connected to the second contact b2 of the right position of the first switch M1 and the fourth contact b4 of the right position of the second switch M2, and the fourth wiring cable X4 is electrically connected to the second contact a2 of the left position of the first switch M1 and the fourth contact b4 of the right position of the second switch M2 through the W-phase winding. The above only exemplifies a connection method of each wiring cable with the first switch M1 and the second switch M2, but is not limited to this. For the sake of convenience of explanation, unless otherwise specified, the following embodiments all use the above-mentioned connection method to exemplarily explain the technical solutions of the embodiments of the present invention. Wherein, when the four-wire AC switch machine M is in the right position (such as Figure 3 As shown), the first switch M1 and the second switch M2 are both in the right position; when the four-wire AC switch machine M is in the left position (as ... Figure 2 When the state of the four-wire AC switch machine M is four-open (not shown in the figure), one of the first switch M1 and the second switch M2 is in the left position and the other is in the right position.

[0061] refer to Figure 2 or Figure 3 When each terminal is correctly connected to each wiring cable, the N-phase output end of the AC power supply 20 is electrically connected to the third wiring cable X3 through the N-phase power transmission unit 11 and the third wiring terminal p3, the A-phase output end is electrically connected to the second wiring cable X2 through the A-phase power transmission unit 12 and the second wiring terminal p2, the B-phase output end is electrically connected to the first wiring cable X1 through the B-phase power transmission unit 13 and the first wiring terminal p1, and the C-phase output end is electrically connected to the second wiring cable L4 through the C-phase power transmission unit 14 and the fourth wiring terminal p4.

[0062] refer to Figure 2The four-wire AC switch M is in the left position. If the wiring terminals and wiring cables are correctly connected, the A-phase and C-phase output terminals of the AC power source 20 form a power circuit through the A-phase power transmission unit 12, the second wiring cable X2, the fourth wiring cable X4, and the C-phase power transmission unit 14. Furthermore, the N-phase and B-phase output terminals of the AC power source 20 form a power circuit through the N-phase power transmission unit 11, the third wiring cable X3, the first wiring cable X1, and the B-phase power transmission unit 13. At this point, the voltage signal of each power transmission unit 10 can be detected. If the amplitude of the voltage signal of at least one power transmission unit 10 remains continuously zero, it is determined that the wiring cable whose voltage signal amplitude remains continuously zero is disconnected.

[0063] For example, when detecting whether the four-wire AC switch M is in the left position, the voltage signal of one of the power transmission units 10 of the A-phase power transmission unit 12 and the C-phase power transmission unit 14 can be detected, as well as the voltage signal of one of the power transmission units 10 of the B-phase power transmission unit 13 and the N-phase power transmission unit 11 can be detected. Then, the conditions of the two energized circuits can be detected only by detecting the voltage signals of the two power transmission units 10, which reduces the amount of signal processing and is conducive to improving the fault detection efficiency of the cable.

[0064] If the amplitude of each voltage signal determines that no disconnection fault has occurred in the wiring cables, further signal characteristics of each voltage signal can be obtained. For example, the amplitude and phase of each voltage signal can be obtained and compared with the preset amplitude range and preset phase range corresponding to the four-wire AC switch M being in the left position, thereby determining whether the four-wire AC switch M is in the left position. If the four-wire AC switch M is determined to be in the left position, it can be determined that no fault has occurred in the wiring cables. If the four-wire AC switch M is determined not to be in the left position, it can be determined that a mixed connection fault may have occurred, and the connection status of each wiring cable can be tested.

[0065] refer to Figure 3 The four-wire AC switch M is in the right position. If the wiring terminals and wiring cables are correctly connected, the A-phase and N-phase output terminals of the AC power source 20 form a power circuit through the A-phase power transmission unit 12, the second wiring cable X2, the third wiring cable X3, and the N-phase power transmission unit 11. Furthermore, the C-phase and B-phase output terminals of the AC power source 20 form a power circuit through the C-phase power transmission unit 14, the fourth wiring cable X4, the first wiring cable X1, and the B-phase power transmission unit 13. At this point, the voltage signal of each power transmission unit 10 can be detected. If the amplitude of the voltage signal of at least one power transmission unit 10 remains continuously zero, it is determined that the wiring cable whose voltage signal amplitude remains continuously zero is disconnected.

[0066] For example, when detecting whether the four-wire AC switch M is in the right position, the voltage signal of one of the power transmission units 10 of the A-phase power transmission unit 12 and the N-phase power transmission unit 11 can be detected, as well as the voltage signal of one of the power transmission units 10 of the B-phase power transmission unit 13 and the C-phase power transmission unit 14 can be detected. Then, the conditions of the two energized circuits can be detected only by detecting the voltage signals of the two power transmission units 10, which reduces the amount of signal processing and is conducive to improving the fault detection efficiency of the cable.

[0067] If the amplitude of each voltage signal determines that no disconnection fault has occurred in the wiring cables, further signal characteristics of each voltage signal can be obtained. For example, the amplitude and phase of each voltage signal can be obtained and compared with the preset amplitude range and preset phase range corresponding to the four-wire AC point switch M being in the right position, thereby determining whether the four-wire AC point switch M is in the right position. If the four-wire AC point switch M is determined to be in the right position, it can be determined that no fault has occurred in the wiring cables. If the four-wire AC point switch M is determined not to be in the right position, it can be determined that a mixed connection fault may exist in the wiring cables. In this case, the connection condition of each wiring cable can be tested.

[0068] Optional, reference Figure 2 or Figure 3 The A-phase power transmission unit 12 includes a first sampling resistor R01, and the B-phase power transmission unit 13 includes a second sampling resistor R02; the first sampling resistor R1 is electrically connected between the A-phase output end of the AC power supply 20 and the second terminal p2; the second sampling resistor R02 is electrically connected between the B-phase output end of the AC power supply 20 and the first terminal p1; the control unit 15 is used to obtain a first sampling voltage Uc1 across the first sampling resistor R01 and a second sampling voltage Uc2 across the second sampling resistor R02, and detect a fault condition of the wiring cable based on the first sampling voltage Uc1 and the second sampling voltage Uc2.

[0069] Specifically, the control unit 15 can be electrically connected to both ends of the first sampling resistor R01 through two acquisition terminals, so as to obtain the first sampling voltage Uc1 across the first sampling resistor R01. Similarly, the control unit 15 can be electrically connected to both ends of the second sampling resistor R02 through the other two acquisition terminals, so as to obtain the second sampling voltage Uc2 across the second sampling resistor R02. Figure 2When detecting whether the four-wire AC switch M is in the left position, the control unit 15 can detect, through the first sampling voltage Uc1 of the first sampling resistor R01, whether the A-phase output terminal and the C-phase output terminal of the AC power source 20 form a power circuit through the A-phase power transmission unit 12, the second wiring cable X2, the fourth wiring cable X4, and the C-phase power transmission unit 14, and detect, through the second sampling voltage Uc2, whether the N-phase output terminal and the B-phase output terminal of the AC power source 20 form a power circuit through the N-phase power transmission unit 11, the third wiring cable X3, the first wiring cable X1, and the B-phase power transmission unit 13. Figure 3 When testing whether the four-wire AC point switch M is in the right position, the control unit 15 uses the first sampled voltage Uc1 of the first sampling resistor R01 to detect whether the A-phase and N-phase output terminals of the AC power source 20 form a power circuit through the A-phase power transmission unit 12, the second wiring cable X2, the third wiring cable X3, and the N-phase power transmission unit 11. It also uses the second sampled voltage Uc2 to detect whether the C-phase and B-phase output terminals of the AC power source 20 form a power circuit through the C-phase power transmission unit 14, the fourth wiring cable X4, the first wiring cable X1, and the B-phase power transmission unit 13. This eliminates the need to provide sampling resistors in each power transmission unit 10, which helps reduce the cost of the auxiliary test device 01.

[0070] Exemplary, reference Figure 2 and Figure 3 The control unit 15 is further configured to obtain a first amplitude and a first phase of the first sampling voltage Uc1, and a second amplitude and a second phase of the second sampling voltage Uc2; and detect a fault condition of the wiring cable according to the first amplitude, the second amplitude, the first phase, and the second phase.

[0071] Specifically, if it is detected whether the four-wire AC point switch M is in the left position, the first preset amplitude range and first preset phase range of the first sampled voltage Uc1, as well as the second preset amplitude range and second preset phase range of the second sampled voltage Uc2, can be obtained when the AC point switch M is in the left position. The first amplitude of the detected first sampled voltage Uc1 can be compared with the first preset amplitude range, and the first phase of the detected first sampled voltage Uc1 can be compared with the first preset phase range. If the first amplitude is within the first preset amplitude range and the first phase is within the first preset phase range, it is determined that there is no disconnection fault between the second connection cable X2 and the fourth connection cable X4. Simultaneously, the second amplitude of the detected second sampled voltage Uc2 can be compared with the second preset amplitude range, and the second phase of the detected second sampled voltage Uc2 can be compared with the second preset phase range. If the second amplitude is within the second preset amplitude range and the second phase is within the second preset phase range, it is determined that there is no disconnection fault between the first connection cable X1 and the third connection cable X3. Furthermore, since the signal characteristics of the first sampling voltage Uc1 and the signal characteristics of the second sampling voltage Uc2 are consistent with the corresponding signal characteristic range when the four-wire AC switch M is in the left position, it can be determined that the current position of the four-wire AC switch M is the left position, that is, the position is correct and there is no fault in the wiring cables.

[0072] For example, if the first amplitude of the first sampled voltage Uc1 remains continuously zero, it can be determined that at least one of the second connection cable X2 or the fourth connection cable X4 has a disconnection fault. If the second amplitude of the second sampled voltage Uc2 remains continuously zero, it can be determined that at least one of the first connection cable X1 and the third connection cable X3 has a disconnection fault. If at least one of the signal characteristics of the first sampled voltage Uc1 and the signal characteristics of the second sampled voltage Uc2 does not match the corresponding signal characteristic range when the four-wire AC point switch M is in the left position, it can be determined that the current position of the four-wire AC point switch M is not the left position, that is, the position is incorrect, and it can be further determined that the connection cables are mixed.

[0073] The above describes the case of detecting whether the four-wire AC point switch M is in the left position by using the first sampling voltage Uc1 and the second sampling voltage Uc2. The case of detecting whether the AC point switch M is in the right position by using the first sampling voltage Uc1 and the second sampling voltage Uc2 is similar, that is, the signal characteristics of the first sampling voltage Uc1 and the second sampling voltage Uc2 are compared with the preset signal characteristic range of the four-wire AC point switch M in the right position, which will not be repeated here.

[0074] Optional, Figure 4 FIG. 1 is a structural diagram of another auxiliary test device for a four-wire AC switch provided by an embodiment of the present invention. Figure 5This is a structural diagram of another auxiliary test device for a four-wire AC switch provided by an embodiment of the present invention, combined with reference to Figure 4 and Figure 5 The C-phase power transmission unit 14 includes a third sampling resistor R03, and the N-phase power transmission unit 11 includes a fourth sampling resistor R04; the third sampling resistor R03 is electrically connected between the C-phase output terminal of the AC power supply 20 and the fourth wiring terminal p4; the fourth sampling resistor R04 is electrically connected between the N-phase output terminal of the AC power supply 20 and the third wiring terminal p3; the control unit 15 is further configured to obtain a third sampling voltage Uc3 across the third sampling resistor R03 and a fourth sampling voltage Uc4 across the fourth sampling resistor R04, and detect a fault condition of each wiring cable based on the third sampling voltage Uc3 and the fourth sampling voltage Uc4.

[0075] Specifically, the control unit 15 can be electrically connected to the two ends of the third sampling resistor R03 through two acquisition terminals, so as to obtain the third sampling voltage Uc3 across the third sampling resistor R03. Similarly, the control unit 15 can be electrically connected to the two ends of the fourth sampling resistor R04 through the other two acquisition terminals, so as to obtain the fourth sampling voltage Uc4 across the fourth sampling resistor R04. Figure 4 When detecting whether the four-wire AC switch M is in the left position, the control unit 15 can detect, through the third sampling voltage Uc3 of the third sampling resistor R03, whether the A-phase output terminal and the C-phase output terminal of the AC power source 20 form a power circuit through the A-phase power transmission unit 12, the second wiring cable X2, the fourth wiring cable X4, and the C-phase power transmission unit 14, and detect, through the fourth sampling voltage Uc4 across the fourth sampling resistor R04, whether the N-phase output terminal and the B-phase output terminal of the AC power source 20 form a power circuit through the N-phase power transmission unit 11, the third wiring cable X3, the first wiring cable X1, and the B-phase power transmission unit 13. Figure 5 When testing whether the four-wire AC point switch M is in the right position, the control unit 15 can detect, using the third sampled voltage Uc3 across the third sampling resistor R03, whether the A-phase and N-phase output terminals of the AC power source 20 form a power circuit through the A-phase power transmission unit 12, the second wiring cable X2, the third wiring cable X3, and the N-phase power transmission unit 11. Furthermore, the control unit 15 can detect, using the fourth sampled voltage Uc4 across the fourth sampling resistor R04, whether the C-phase and B-phase output terminals of the AC power source 20 form a power circuit through the C-phase power transmission unit 14, the fourth wiring cable X4, the first wiring cable X1, and the B-phase power transmission unit 13. This eliminates the need to provide sampling resistors in each power transmission unit 10, thereby reducing the cost of the auxiliary test device 01.

[0076] Exemplary, reference Figure 4 and Figure 5The control unit 15 is further configured to obtain a third amplitude and a third phase of the third sampling voltage Uc3, and to obtain a fourth amplitude and a fourth phase of the fourth sampling voltage Uc4; and to detect a fault condition of each wiring cable according to the third amplitude, the fourth amplitude, the third phase, and the fourth phase.

[0077] Specifically, if it is detected whether the four-wire AC point switch M is in the left position, the third preset amplitude range and third preset phase range of the third sampled voltage Uc3, as well as the fourth preset amplitude range and fourth preset phase range of the fourth sampled voltage Uc4, can be obtained when the AC point switch M is in the left position. The third amplitude of the detected third sampled voltage Uc3 can be compared with the third preset amplitude range, and the third phase of the detected third sampled voltage Uc3 can be compared with the third preset phase range. If the third amplitude is within the third preset amplitude range and the third phase is within the third preset phase range, it is determined that there is no disconnection fault between the second connection cable X2 and the fourth connection cable X4. Simultaneously, the fourth amplitude of the detected fourth sampled voltage Uc4 can be compared with the fourth preset amplitude range, and the fourth phase of the detected fourth sampled voltage Uc4 can be compared with the fourth preset phase range. If the fourth amplitude is within the fourth preset amplitude range and the fourth phase is within the fourth preset phase range, it is determined that there is no disconnection fault between the first connection cable X1 and the third connection cable X3. Furthermore, since the signal characteristics of the third sampling voltage Uc3 and the signal characteristics of the fourth sampling voltage Uc4 match the corresponding signal characteristic ranges when the four-wire AC point switch M is in the left position, it can be determined that the current position of the four-wire AC point switch M is the left position, that is, the position is correct and there is no fault in the wiring cables.

[0078] For example, if the third amplitude of the third sampled voltage Uc3 remains continuously zero, it can be determined that at least one of the second connection cable X2 or the fourth connection cable X4 has a disconnection fault. If the fourth amplitude of the fourth sampled voltage Uc4 remains continuously zero, it can be determined that at least one of the first connection cable X1 or the third connection cable X3 has a disconnection fault. If at least one of the signal characteristics of the third sampled voltage Uc3 and the signal characteristics of the fourth sampled voltage Uc4 does not match the corresponding signal characteristic range when the four-wire AC point switch M is in the left position, it can be determined that the current position of the four-wire AC point switch M is not the left position, that is, the position is incorrect, and it can be further determined that the connection of the connection cables is mixed.

[0079] The above describes the case where the third sampling voltage Uc3 and the fourth sampling voltage Uc4 are used to detect whether the four-wire AC point switch M is in the left position. The case where the third sampling voltage Uc3 and the fourth sampling voltage Uc4 are used to detect whether the AC point switch M is in the right position is similar, that is, the signal characteristics of the third sampling voltage Uc3 and the fourth sampling voltage Uc4 are compared with the preset signal characteristic range when the four-wire AC point switch M is in the right position, which will not be repeated here.

[0080] For example, in an embodiment where each power transmission unit includes a sampling resistor, that is, the A-phase power transmission unit includes a first sampling resistor, the B-phase power transmission unit includes a second sampling resistor, the C-phase power transmission unit includes a third sampling resistor, and the N-phase power transmission unit includes a fourth sampling resistor, the control unit is further configured to obtain signal characteristics of the voltage signals of each power transmission unit; and based on the signal characteristics of each voltage signal, detect faults in each wiring cable. This improves the accuracy of wiring cable fault detection.

[0081] Optional, reference Figures 2 to 5 In any of the figures, the A-phase power transmission unit 12 includes a first control switch K1, the B-phase power transmission unit 13 includes a second control switch K2, the C-phase power transmission unit 14 includes a third control switch K3, and the N-phase power transmission unit 11 includes a fourth control switch K4; the first control switch K1 is electrically connected between the A-phase output end of the AC power supply 20 and the second terminal p2; the second control switch K2 is electrically connected between the B-phase output end of the AC power supply 20 and the first terminal P1; the third control switch K3 is electrically connected between the C-phase output end of the AC power supply 20 and the fourth terminal p4; and the fourth control switch K4 is electrically connected between the N-phase output end of the AC power supply 20 and the third terminal p3.

[0082] Specifically, the control terminals of each control switch (K1-K4) can be electrically connected to a control unit 15 (not shown), with the control unit 15 controlling the on / off switching of each control switch. Each control switch can be a relay switch, and each control switch can be a normally open switch within the same relay. The control unit 15 can then control the powering on or off of the relay coil, thereby enabling control of each control switch. Thus, after the auxiliary test device 01 is connected to the wiring cables of the four-wire AC point switch M, the AC power supply 20 can be controlled to provide the AC power transmission path to the four-wire AC point switch M by controlling the status of each control switch.

[0083] Exemplary, reference Figures 2 to 5In any of the accompanying drawings, the first resistor R1 is the equivalent impedance of the signal transmission cable between the A-phase output terminal of the AC power supply 20 and the second wiring cable X2, and the first inductor L1 is the equivalent inductive reactance of the signal transmission cable between the A-phase output terminal of the AC power supply 20 and the second wiring cable X2; the second resistor R2 is the equivalent impedance of the signal transmission cable between the B-phase output terminal of the AC power supply 20 and the first wiring cable X1, and the second inductor L2 is the equivalent inductive reactance of the signal transmission cable between the B-phase output terminal of the AC power supply 20 and the first wiring cable X1; the third resistor R3 is the equivalent impedance of the signal transmission cable between the C-phase output terminal of the AC power supply 20 and the fourth wiring cable X4, and the third inductor L3 is the equivalent inductive reactance of the signal transmission cable between the C-phase output terminal of the AC power supply 20 and the fourth wiring cable X4; the fourth resistor R4 is the equivalent impedance of the signal transmission cable between the N-phase output terminal of the AC power supply 20 and the third wiring cable X3, and the fourth inductor L4 is the equivalent inductive reactance of the signal transmission cable between the N-phase output terminal of the AC power supply 20 and the third wiring cable X3. refer to Figure 2 and Figure 4 The first capacitor C1 is the equivalent capacitive reactance of the signal transmission cable when the second wiring cable X2 and the fourth wiring cable X4 form a power loop, and the second capacitor C2 is the equivalent capacitive reactance of the signal transmission cable when the first wiring cable X1 and the third wiring cable X3 form a power loop. Figure 3 and Figure 5 The third capacitor C3 is the equivalent capacitive reactance of the signal transmission cable when the second wiring cable X2 and the third wiring cable X3 form an energized loop. The fourth capacitor C4 is the equivalent capacitive reactance of the signal transmission cable when the first wiring cable X1 and the fourth wiring cable X4 form an energized loop. When determining the preset ranges corresponding to the signal characteristics of each voltage signal when the four-wire AC switch M is in the left or right position, the equivalent impedances, equivalent capacitive reactances, and equivalent inductive reactances can be first obtained, as well as the equivalent impedances, equivalent capacitive reactances, and equivalent inductive reactances within the four-wire AC switch M. Thus, the preset ranges of the corresponding signal characteristics can be determined based on the equivalent impedances, equivalent capacitive reactances, and equivalent inductive reactances. For example, the preset amplitude ranges and preset phase ranges corresponding to the amplitudes and phases of the first voltage signal Uc1, the second voltage signal Uc2, the third voltage signal Uc3, and the fourth voltage signal Uc4, respectively, can be determined.

[0084] Optional, Figure 6 This is a structural diagram of another auxiliary test device for a four-wire AC switch provided by an embodiment of the present invention, with reference to Figure 6The auxiliary test device 01 of the four-wire AC switch also includes: a human-machine interaction interface 16; the human-machine interaction interface 16 is electrically and / or communicatively connected to the control unit 15; the human-machine interaction interface 16 is used to obtain operation instructions and send the operation instructions to the control unit 15; the control unit 15 is also used to send the fault condition to the human-machine interaction interface 16 after the fault condition of each wiring cable is detected; the human-machine interaction interface 16 is also used to display the fault condition when receiving the fault condition.

[0085] Specifically, the operator can input operating instructions into the human-machine interface 16 via buttons or a touchscreen display, causing the human-machine interface 16 to transmit the operating instructions to the control unit 15, which in turn controls the status of the various control switches (K1-K4) according to the operating instructions. The human-machine interface 16 can be provided with an indicator light to display the fault status of each wiring cable detected by the control unit 15, allowing the operator to directly determine the fault status of each wiring cable based on the result. Alternatively, the indicator light can directly display the position result of the four-wire AC switch M, allowing the operator to independently determine the fault status of each wiring cable based on the position result of the four-wire AC switch M.

[0086] For example, the control unit 15 can also communicate with an external server or PC via Ethernet, infrared, or other means. The collected voltage signals and corresponding test results can be sent to the external server or PC in real time, providing a reliable basis for analyzing other on-site anomalies, such as abnormalities in the internal circuits or cable impedance of a four-wire AC switch. Furthermore, the diversification and multiplication of Ethernet data information can further expand the functionality of the device.

[0087] Based on the same inventive concept, an embodiment of the present invention further provides an auxiliary test device for a four-wire AC switch. Figure 7 FIG. 1 is a structural diagram of an auxiliary test device for a four-wire AC switch provided by an embodiment of the present invention. Figure 7 As shown, the auxiliary test equipment 100 of the four-wire AC switch includes: a power supply board 02, a terminal board 03, at least two auxiliary test device card boards 04, and at least one auxiliary test device of the four-wire AC switch provided by any embodiment of the present invention (not shown in the figure). Therefore, the auxiliary test equipment of the four-wire AC switch provided by the embodiment of the present invention includes the technical features of the auxiliary test device of the four-wire AC switch provided by any embodiment of the present invention, and can achieve the beneficial effects of the auxiliary test device of the four-wire AC switch provided by any embodiment of the present invention. The similarities can be referred to the above description of the auxiliary test device of the four-wire AC switch provided by the embodiment of the present invention, and will not be repeated here.

[0088] The auxiliary test device for the four-wire AC switch is removably fixed to the auxiliary test device card 04. This allows for easy replacement if the auxiliary test device fails, making the device reusable and reducing costs. The power supply board 02 is electrically connected to the auxiliary test device card 04. When the auxiliary test device is fixed to the auxiliary test device card 04, it can be electrically connected to the power supply board 02. When the power supply board 02 is electrically connected to the AC power source, it provides an AC power signal to the auxiliary test device. The AC power signal can be 220V AC.

[0089] Each port of terminal board 03 is configured to correspond one-to-one with each wiring terminal in the auxiliary test device, and terminal board 03 is electrically connected to auxiliary test device card board 04. Therefore, when the auxiliary test device is fixed to auxiliary test device card board 04, each port of terminal board 03 is electrically connected to its corresponding wiring terminal. Among them, the configuration of each port of terminal board 03 is the same as that of the official drive control system. Therefore, when determining the connection status of each port of terminal board 03 and each wiring cable, the connection status of the drive control system used to drive the four-wire AC switch for turnout operation and each wiring cable can be mapped, which can avoid confusion in the connection between the official drive control system and each wiring cable.

[0090] For example, the auxiliary test device card 04 can also be fixed with the formal drive control system, so that the auxiliary test equipment of the four-wire AC switch can test the compatibility of the auxiliary test device with the formal drive system, facilitating the switching between the two.

[0091] refer to Figure 7 The connection cables (X1-X4) of the four-wire AC point switch machine M can be electrically connected to the auxiliary test equipment 100 of the four-wire AC point switch machine through the interface frame 200 and the lightning protection distribution cabinet 300 in sequence, thereby realizing lightning protection of the four-wire AC point switch machine M and protection of the connection cables.

[0092] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. An auxiliary test device for a four-wire AC switch, the four-wire AC switch comprising four connecting cables, the four connecting cables being a first connecting cable, a second connecting cable, a third connecting cable, and a fourth connecting cable, wherein: The auxiliary test device of the four-wire AC switch includes: a power transmission unit provided in one-to-one correspondence with each of the wiring cables, and a wiring terminal provided in one-to-one correspondence with each of the wiring cables; The power transmission units are respectively an N-phase power transmission unit, an A-phase power transmission unit, a B-phase power transmission unit, a C-phase power transmission unit and a control unit; The connection terminals are respectively a first connection terminal, a second connection terminal, a third connection terminal and a fourth connection terminal; The N-phase power transmission unit is electrically connected between the N-phase output end of the AC power supply and the third terminal; The A-phase power transmission unit is electrically connected between the A-phase output terminal of the AC power supply and the second wiring terminal; The B-phase power transmission unit is electrically connected between the B-phase output terminal of the AC power supply and the first wiring terminal; The C-phase power transmission unit is electrically connected between the C-phase output terminal of the AC power supply and the fourth terminal; The control unit is used to obtain the voltage signal of each power transmission unit and detect the fault condition of each connection cable according to the signal characteristics of each voltage signal.

2. The auxiliary test device for a four-wire AC switch according to claim 1, characterized in that: The A-phase power transmission unit includes a first sampling resistor, and the B-phase power transmission unit includes a second sampling resistor; The first sampling resistor is electrically connected between the A-phase output terminal of the AC power supply and the second wiring terminal; The second sampling resistor is electrically connected between the B-phase output terminal of the AC power supply and the first wiring terminal; The control unit is configured to obtain a first sampling voltage across the first sampling resistor and a second sampling voltage across the second sampling resistor, and detect a fault condition of each of the wiring cables based on signal characteristics of the first sampling voltage and the second sampling voltage.

3. The auxiliary test device for a four-wire AC switch according to claim 2, characterized in that: The control unit is further configured to obtain a first amplitude and a first phase of the first sampled voltage, and obtain a second amplitude and a second phase of the second sampled voltage; A fault condition of the patch cable is detected based on the first amplitude, the second amplitude, the first phase, and the second phase.

4. The auxiliary test device for a four-wire AC switch according to claim 1, characterized in that: The C-phase power transmission unit includes a third sampling resistor, and the N-phase power transmission unit includes a fourth sampling resistor; The third sampling resistor is electrically connected between the C-phase output terminal of the AC power supply and the fourth wiring terminal; The fourth sampling resistor is electrically connected between the N-phase output terminal of the AC power supply and the third wiring terminal; The control unit is further configured to obtain a third sampling voltage across the third sampling resistor and a fourth sampling voltage across the fourth sampling resistor, and detect a fault condition of each of the wiring cables based on signal characteristics of the third sampling voltage and the fourth sampling voltage.

5. The auxiliary testing device for a four-wire AC switch according to claim 4, characterized in that: The control unit is further configured to obtain a third amplitude and a third phase of the third sampling voltage, and to obtain a fourth amplitude and a fourth phase of the fourth sampling voltage; A fault condition of each of the connection cables is detected according to the third amplitude, the fourth amplitude, the third phase, and the fourth phase.

6. The auxiliary testing device for a four-wire AC switch according to claim 1, characterized in that: The control unit is further configured to obtain signal characteristics of the voltage signal of each of the power transmission units; A fault condition of each of the connection cables is detected according to a signal characteristic of each of the voltage signals.

7. The auxiliary testing device for a four-wire AC switch according to claim 1, characterized in that: The A-phase power transmission unit includes a first control switch, the B-phase power transmission unit includes a second control switch, the C-phase power transmission unit includes a third control switch, and the N-phase power transmission unit includes a fourth control switch; The first control switch is electrically connected between the A-phase output terminal of the AC power supply and the second wiring terminal; The second control switch is electrically connected between the B-phase output terminal of the AC power supply and the first wiring terminal; The third control switch is electrically connected between the C-phase output terminal of the AC power supply and the fourth terminal; The fourth control switch is electrically connected between the N-phase output end of the AC power supply and the third wiring terminal.

8. The auxiliary test circuit of the four-wire AC switch according to claim 1, characterized in that: In the four-wire AC switch machine, the first wiring cable is electrically connected to the U-phase winding, the second wiring cable is electrically connected to the V-phase winding, the third wiring cable is electrically connected to the N-phase terminal, and the fourth wiring cable is electrically connected to the W-phase winding; When the connection terminals are correctly connected to the connection cables, the first connection terminal is electrically connected to the first connection cable, the second connection terminal is electrically connected to the second connection cable, the third connection terminal is electrically connected to the third connection cable, and the fourth connection terminal is electrically connected to the fourth connection cable.

9. The auxiliary testing device for a four-wire AC switch according to claim 1, characterized in that: Also includes: Human-computer interaction interface; The human-computer interaction interface is electrically and / or communicatively connected to the control unit; The human-computer interaction interface is used to obtain operation instructions and send the operation instructions to the control unit; The control unit is further configured to, after determining a fault condition of each of the wiring cables, send the fault condition to the human-computer interaction interface; The human-computer interaction interface is further configured to display the fault condition when the fault condition is received.

10. An auxiliary test device for a four-wire AC switch, characterized in that: include: A power supply board, a terminal board, at least two auxiliary test device card boards, and at least one auxiliary test device for a four-wire AC switch according to any one of claims 1 to 9; The auxiliary test device of the four-wire AC switch machine can be detachably fixed on the auxiliary test device card; The power supply board is electrically connected to the AC power supply and the auxiliary test device card board, and the terminal board is electrically connected to the auxiliary test device card board.

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