A control circuit and method for retrofitting a six-wire AC switch machine

Abstract

This invention provides a control circuit and method for retrofitting a six-wire AC switch machine, belonging to the field of rail transit control technology. It includes: a dual-mode conversion module, used to control the six-wire AC switch machine based on a five-wire AC switch machine circuit within a preset first time period using the default connection method of the internal circuit of the dual-mode conversion module; the dual-mode conversion module is also used to perform retrofit testing of the six-wire AC switch machine based on the five-wire AC switch machine circuit within a preset second time period by changing the connection method of the internal circuit of the dual-mode conversion module. This invention flexibly switches between the control and retrofit testing of the six-wire AC switch machine using the five-wire AC switch machine circuit in different time periods through the dual-mode conversion module, thereby achieving compatible control and retrofit testing of the five-wire AC switch machine circuit and the six-wire AC switch machine without affecting the normal operation of the six-wire AC switch machine.

Description

Technical Field

[0001] This invention relates to the field of rail transit control technology, and in particular to a control circuit and method for the modification of a six-wire AC switch machine. Background Technology

[0002] In the turnout control system of urban rail transit, the switch machine is a crucial device for ensuring the correct train travel path. Currently, the five-wire AC switch machine circuit widely used in China can effectively meet the needs of most application scenarios. However, some subway lines use six-wire AC switch machines, which brings compatibility issues during turnout modification.

[0003] In existing technical solutions, six-wire switch machines need to maintain high reliability during actual operation, especially during normal daytime operation, to ensure the safe operation of trains. However, due to the differences in wiring ports and control logic between six-wire and five-wire systems, simple line modifications often cannot meet the system's stability requirements. Therefore, the modification process in existing technologies requires a significant amount of time and resources, usually affecting normal daytime operation and making it difficult to achieve a balance between modification and operation.

[0004] Therefore, how to achieve compatible control and modification testing of five-wire AC switch circuits and six-wire AC switch machines without affecting the normal operation of six-wire AC switch machines has become an urgent technical problem to be solved. Summary of the Invention

[0005] This invention provides a control circuit and method for retrofitting a six-wire AC switch machine, which addresses the deficiencies in the prior art and enables compatible control and retrofit testing of a five-wire AC switch machine circuit and a six-wire AC switch machine without affecting the normal operation of the six-wire AC switch machine.

[0006] This invention provides a control circuit for the modification of a six-wire AC switch machine, comprising: a six-wire AC switch machine, a five-wire AC switch machine circuit, and a dual-mode conversion module;

[0007] The five-wire AC switch machine circuit is connected to the first to fifth contacts of the six-wire AC switch machine through the first to fifth terminals of the six-wire AC switch machine;

[0008] The first to fourth ends of the dual-mode conversion module are respectively connected to the sixth to ninth contacts of the six-wire AC switch machine, and the fifth end of the dual-mode conversion module is connected to the seventh contact of the six-wire AC switch machine through the sixth terminal of the six-wire AC switch machine.

[0009] The dual-mode conversion module is used to control the six-wire AC switch machine based on the five-wire AC switch machine circuit within a preset first time period through the default connection mode of the internal circuit of the dual-mode conversion module.

[0010] The dual-mode conversion module is also used to perform a modification test on the six-wire AC switch machine based on the five-wire AC switch machine circuit by changing the connection method of the internal circuit of the dual-mode conversion module within a preset second time period.

[0011] According to the present invention, a control circuit for the retrofitting of a six-wire AC switch machine is provided, wherein the dual-mode conversion module includes a control unit and a switching unit;

[0012] The first to fourth ends of the switching unit are respectively connected to the sixth to ninth contacts of the six-wire AC switch machine, and the fifth end of the switching unit is connected to the seventh contact of the six-wire AC switch machine through the sixth terminal of the six-wire AC switch machine.

[0013] The control unit is used to control the switching unit to switch to a first state within a preset first time period, and to control the switching unit to switch to a second state within a preset second time period;

[0014] The switching unit is used, in the first state, to combine with the five-wire AC switch machine circuit to realize the original six-wire control of the six-wire AC switch machine.

[0015] The switching unit is also used to perform a modification test of a six-wire AC switch machine based on the five-wire AC switch machine circuit in the second state.

[0016] According to the control circuit for the modification of a six-wire AC switch machine provided by the present invention, the switching unit includes: a rectifier subunit and a relay switching subunit;

[0017] The rectifier subunit is connected to the relay switching subunit;

[0018] The first to fourth terminals of the relay switching subunit are respectively connected to the sixth to ninth contacts of the six-wire AC switch machine, and the fifth terminal of the relay switching subunit is connected to the seventh contact of the six-wire AC switch machine through the sixth terminal of the six-wire AC switch machine.

[0019] According to the present invention, a control circuit for the modification of a six-wire AC switch machine is provided, wherein the relay switching subunit includes a first relay, a second relay, a third relay, and a fourth relay;

[0020] The first terminal of the first relay is connected to the sixth contact of the six-wire AC switch machine;

[0021] The first terminal of the second relay is connected to the seventh contact of the six-wire AC switch machine;

[0022] The first terminal of the third relay is connected to the eighth contact of the six-wire AC switch machine;

[0023] The first terminal of the fourth relay is connected to the ninth contact of the six-wire AC switch machine;

[0024] The second terminal of the first relay and the second terminal of the fourth relay are both connected to one end of the rectifier subunit;

[0025] The second terminal of the second relay and the second terminal of the third relay are both connected to the other end of the rectifier subunit;

[0026] The third terminal of the first relay and the third terminal of the second relay are both connected to the seventh contact of the six-wire AC switch machine through the sixth terminal of the six-wire AC switch machine.

[0027] According to the control circuit for the modification of a six-wire AC switch machine provided by the present invention, the rectifier sub-unit includes a diode and a resistor, wherein the negative terminal of the diode is connected to one end of the resistor.

[0028] According to the present invention, a control circuit for the modification of a six-wire AC switch machine is provided, wherein the control unit includes a power supply, a double push button, and a multi-channel control relay;

[0029] The first end of the double button is connected to the positive terminal of the power supply, the second end of the double button is connected to one end of the multi-channel control relay, the third end of the double button is connected to the other end of the multi-channel control relay, and the fourth end of the double button is connected to the negative terminal of the power supply.

[0030] The multi-channel control relay is used to simultaneously control the switching states of the first relay, the second relay, the third relay, and the fourth relay to achieve synchronous control of multiple relays.

[0031] According to the control circuit for the modification of a six-wire AC switch machine provided by the present invention, when the multi-channel control relay simultaneously controls the first relay, the second relay, the third relay, and the fourth relay to be in the off state, the switching unit is in the first state;

[0032] When the multiplex control relay simultaneously controls the first relay, the second relay, the third relay, and the fourth relay to be in the closed state, the switching unit is in the second state.

[0033] According to the control circuit for the modification of a six-wire AC switch machine provided by the present invention, the dual-mode conversion module further includes an indicator light unit;

[0034] The indicator light unit is used to display a preset first light when the switching unit is in the first state;

[0035] The indicator light unit is also used to display a preset second light when the switching unit is in the second state.

[0036] The present invention also provides a control method for the modification of a six-wire AC switch machine, comprising the following steps: using a dual-mode conversion module, within a preset first time period, controlling the six-wire AC switch machine based on the five-wire AC switch machine circuit through the default connection mode of the internal circuit of the dual-mode conversion module;

[0037] By using the dual-mode conversion module, within a preset second time period, the connection method of the internal circuit of the dual-mode conversion module is changed, thereby enabling the modification and testing of the six-wire AC switch machine based on the five-wire AC switch machine circuit.

[0038] According to the present invention, a control method for retrofitting a six-wire AC switch machine is provided, wherein the dual-mode conversion module includes a control unit and a switching unit, and the method specifically includes:

[0039] The control unit controls the switching unit to switch to the first state within a preset first time period, and controls the switching unit to switch to the second state within a preset second time period.

[0040] The switching unit, in the first state, combines with the five-wire AC switch machine circuit to realize the original six-wire control of the six-wire AC switch machine; and in the second state, it realizes the modification test of the six-wire AC switch machine based on the five-wire AC switch machine circuit.

[0041] In summary, one or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0042] By connecting the five-wire AC switch machine circuit to the first to fifth terminals of the six-wire AC switch machine, basic control of the six-wire system from the five-wire system is achieved. To further enable smooth switching between the two modes, a dual-mode conversion module is designed, allowing for flexible switching of connection methods at different times to meet varying operational needs. During operation, the default connection method within the first preset time period enables control of the six-wire AC switch machine based on the five-wire AC switch machine circuit. This ensures the system maintains normal operation of the original six-wire system during daytime operation, guaranteeing uninterrupted daily line operation. At night or during designated non-operational periods, the dual-mode conversion module switches to the second mode. By changing the internal circuit connection, the five-wire AC switch machine circuit can directly operate on the six-wire switch machine at night, enabling the modification and testing of the five-wire system. In this state, the five-wire system can simulate and verify its compatibility and control effectiveness in practical applications, ensuring the safety and effectiveness of subsequent large-scale switching. Therefore, through the dual-mode design with time-sharing switching, it is possible to gradually modify the existing system while maintaining its stable operation. This allows for the compatibility control and modification testing of the five-wire AC switch circuit and the six-wire AC switch without affecting the normal operation of the six-wire AC switch. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0044] Figure 1 This is a schematic diagram of the control circuit for the modification of a six-wire AC switch machine provided by the present invention.

[0045] Figure 2 This is a schematic diagram of the six-wire AC switch machine control circuit provided by the present invention.

[0046] Figure 3 This is the circuit equivalent diagram of a five-wire AC switch machine in the second state provided by the present invention.

[0047] Figure 4 This is a flowchart illustrating the control method for the modification of a six-wire AC switch machine provided by the present invention. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0049] It should be noted that in the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. The terms "comprising," "including," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0050] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "electrical connection," "electrical connection," or "communication electrical connection" should be interpreted broadly. For example, "electrical connection," "electrical connection," or "communication electrical connection" can refer not only to a physical electrical connection, but also to an electrical connection or a signal electrical connection. For instance, it can be a direct electrical connection, i.e., a physical electrical connection, or an indirect electrical connection through at least one intermediate component, as long as the circuit is connected. It can also refer to the internal connection between two components. A signal electrical connection can refer not only to a signal electrical connection through a circuit, but also to a signal electrical connection through a medium, such as radio waves. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0051] The following is combined Figures 1-4 This invention describes the modification method, system, electronic equipment, and storage medium for a six-wire AC switch machine.

[0052] Figure 1 This is a schematic diagram of the control circuit for the six-wire AC switch machine modification provided by the present invention, as shown below. Figure 1 As shown, it includes: a six-wire AC switch machine, a five-wire AC switch machine circuit, and a dual-mode conversion module;

[0053] The five-wire AC switch machine circuit is connected to the first to fifth contacts of the six-wire AC switch machine through the first to fifth terminals of the six-wire AC switch machine.

[0054] The first to fourth terminals of the dual-mode conversion module are respectively connected to the sixth to ninth contacts of the six-wire AC switch machine, and the fifth terminal of the dual-mode conversion module is connected to the seventh contact of the six-wire AC switch machine through the sixth terminal of the six-wire AC switch machine.

[0055] The dual-mode conversion module is used to control a six-wire AC switch machine based on a five-wire AC switch machine circuit within a preset first time period, using the default connection method of the internal circuit of the dual-mode conversion module.

[0056] The dual-mode conversion module is also used to perform modification testing of a six-wire AC switch machine based on a five-wire AC switch machine circuit by changing the connection method of the internal circuit of the dual-mode conversion module within a preset second time period.

[0057] Specifically, in the operation and renovation of urban rail transit, traditional six-wire AC switch machine control circuits are widely used on many existing lines. The six-wire AC switch machine control circuit can be referenced... Figure 2 , Figure 2 This is a schematic diagram of the control circuit for a six-wire AC switch machine provided by the present invention. However, with technological advancements, five-wire AC switch machine systems have gradually become the mainstream. This shift presents a key challenge: achieving compatible access and control of the six-wire switch machine from a five-wire system without affecting its normal operation. To address this, a control circuit for the retrofitting of a six-wire AC switch machine is proposed to meet the retrofitting needs of existing lines.

[0058] In this embodiment, the control circuit includes a six-wire AC switch machine, a five-wire AC switch machine circuit, and a dual-mode conversion module for implementing dual-mode switching. It should be noted that before converting the six-wire AC switch machine circuit to a five-wire AC switch machine circuit, it is first necessary to disconnect... Figure 2 The sixth terminal shown is disconnected, as is the connection between the sixth and seventh terminals.

[0059] The five-wire AC switch machine circuit is connected to the first to fifth terminals of the six-wire AC switch machine, respectively, through the first to fifth terminals, to establish a basic connection between the five-wire AC switch machine circuit and the six-wire switch machine. This connection method not only ensures the compatibility of the five-wire AC switch machine circuit when initially connected to the six-wire switch machine, but also lays the foundation for subsequent control and switching.

[0060] To achieve stable control of the six-wire switch machine during normal operation while also enabling compatibility testing of the five-wire system during specific time periods, this solution incorporates a dual-mode conversion module. The first to fourth terminals of the dual-mode conversion module are connected to the sixth to ninth contacts of the six-wire AC switch machine, respectively, while the fifth terminal is connected to the seventh contact via the sixth terminal of the six-wire AC switch machine. This connection method allows the dual-mode conversion module to intervene in control without altering the original structure of the six-wire switch machine, enabling flexible switching between the two modes.

[0061] In practical applications, the dual-mode conversion module maintains the control of the six-wire AC switch machine by the five-wire AC switch machine circuit over the six-wire AC switch machine through the default internal circuit connection method during the preset first time period. This default connection method ensures that during normal daytime operation, the six-wire AC switch machine can still be controlled according to the established logic without being interfered with by the five-wire connection.

[0062] During a pre-defined second time period, such as nighttime non-operational hours, the dual-mode conversion module modifies the internal circuit connections to test the conversion of a five-wire AC switch machine to a six-wire switch machine. Specifically, during this period, the dual-mode conversion module switches its internal circuitry so that the control signals from the five-wire AC switch machine circuit can directly apply to the six-wire switch machine, thus simulating the actual control effect of the five-wire system. This allows for testing and verification of the compatibility of the five-wire system without affecting daytime operations, ensuring that the five-wire system can smoothly take over the control of the six-wire switch machine. This conversion test not only provides an effective testing method for subsequent system switchovers but also improves conversion efficiency.

[0063] This design allows the five-wire AC switch machine circuit to seamlessly connect to and control the six-wire AC switch machine while ensuring its normal operation. This achieves the technical effect of balancing daytime stability with nighttime modification and testing.

[0064] In one possible implementation, the dual-mode conversion module includes a control unit and a switching unit;

[0065] The first to fourth ends of the switching unit are respectively connected to the sixth to ninth contacts of the six-wire AC switch machine, and the fifth end of the switching unit is connected to the seventh contact of the six-wire AC switch machine through the sixth terminal of the six-wire AC switch machine.

[0066] The control unit is used to control the switching unit to switch to the first state within a preset first time period, and to control the switching unit to switch to the second state within a preset second time period;

[0067] The switching unit is used in the first state to combine with the five-wire AC switch machine circuit to realize the original six-wire control of the six-wire AC switch machine.

[0068] The switching unit is also used in the second state to perform modification testing of a six-wire AC switch machine based on a five-wire AC switch machine circuit.

[0069] Specifically, the switching unit in the dual-mode conversion module has multiple connection terminals. The first to fourth terminals are respectively connected to the sixth to ninth contacts of the six-wire AC switch machine, and the fifth terminal is connected to the seventh contact through the sixth terminal of the six-wire AC switch machine.

[0070] The control unit is responsible for managing the state switching of the switching unit within a preset time period. During the first period of daytime operation, the control unit keeps the switching unit in its first state. At this time, the switching unit combines with the five-wire AC switch machine circuit through the default connection method to achieve the original six-wire control of the six-wire AC switch machine. In this mode, the control method of the six-wire AC switch machine is not affected by the connection of the five-wire AC switch machine circuit, ensuring the normal operation of the switch machine.

[0071] During the second phase of the nighttime modification test, the control unit will switch the switching unit to the second state. At this time, the switching unit changes its internal connections, allowing the control signals of the five-wire AC switch machine circuit to directly act on the six-wire AC switch machine, thereby enabling the modification test of the six-wire AC switch machine.

[0072] In one possible implementation, the switching unit includes: a rectifier subunit and a relay switching subunit;

[0073] The rectifier subunit is connected to the relay switching subunit;

[0074] The first to fourth terminals of the relay switching subunit are respectively connected to the sixth to ninth contacts of the six-wire AC switch machine, and the fifth terminal of the relay switching subunit is connected to the seventh contact of the six-wire AC switch machine through the sixth terminal of the six-wire AC switch machine.

[0075] Specifically, the function of the rectifier subunit is to rectify the alternating current so that the current can meet the control requirements of the relay switching subunit.

[0076] The relay switching subunit is responsible for switching contacts under preset control logic. Its first to fourth terminals are connected to the sixth to ninth contacts of the six-wire AC switch machine, respectively, and its fifth terminal is connected to the seventh contact through the sixth terminal of the six-wire AC switch machine. This connection method allows the relay switching subunit to effectively intervene in the control channel of the six-wire AC switch machine. By switching the open and closed states of the relays, dual-mode switching can be achieved: In the first mode, the relay switching subunit maintains the original circuit connection of the six-wire control system to ensure stable control of the six-wire switch machine during normal operation; in the second mode, by controlling the energized state of the relays, the current path is switched so that the control signals of the five-wire AC switch machine circuit can directly act on the six-wire AC switch machine, thereby enabling modification testing.

[0077] In one possible implementation, the relay switching subunit includes a first relay, a second relay, a third relay, and a fourth relay;

[0078] The first terminal of the first relay is connected to the sixth contact of the six-wire AC switch machine;

[0079] The first terminal of the second relay is connected to the seventh contact of the six-wire AC switch machine;

[0080] The first terminal of the third relay is connected to the eighth contact of the six-wire AC switch machine;

[0081] The first terminal of the fourth relay is connected to the ninth contact of the six-wire AC switch machine;

[0082] The second terminal of the first relay and the second terminal of the fourth relay are both connected to one end of the rectifier subunit;

[0083] The second terminal of the second relay and the second terminal of the third relay are both connected to the other end of the rectifier subunit;

[0084] The third terminal of the first relay and the third terminal of the second relay are both connected to the seventh contact of the six-wire AC switch machine through the sixth terminal of the six-wire AC switch machine.

[0085] Specifically, in the retrofit scheme for a six-wire AC switch machine, to achieve flexible control of the six-wire switch machine from a five-wire AC switch machine circuit, this scheme employs a relay switching subunit with a multi-relay structure to realize dual-mode switching operations. In this embodiment, the relay switching subunit includes a first relay, a second relay, a third relay, and a fourth relay. Through precise relay connection and switching control, seamless system compatibility and retrofit testing are ensured without interfering with the existing six-wire control.

[0086] Specifically, the first relay, the second relay, the third relay, and the fourth relay are respectively connected to the sixth to the ninth contacts of the six-wire AC switch machine to form independent circuits. The first end of the first relay is connected to the sixth contact of the six-wire AC switch machine, the first end of the second relay is connected to the seventh contact, the first end of the third relay is connected to the eighth contact, and the first end of the fourth relay is connected to the ninth contact.

[0087] To achieve stable current control and path switching, the second terminals of the first and fourth relays are both connected to one end of the rectifier subunit, while the second terminals of the second and third relays are connected to the other end. In this structure, the rectifier subunit primarily performs current regulation and rectification, ensuring stable current support for the relays under different switching states to avoid the impact of current fluctuations on control accuracy. This rectifier connection design allows the relay switching subunit to switch to different modes as needed, effectively adapting to dual-mode current requirements and improving system switching stability.

[0088] Furthermore, to ensure smooth switching and effective control of the relay switching subunit, the third terminals of both the first and second relays are connected to the seventh contact via the sixth terminal of the six-wire AC switch machine. This connection structure further enhances the synchronization between relays, facilitating synchronous switching of all relays when switching to the second state for five-wire system modification testing, thus ensuring the overall stability and reliability of the system.

[0089] In one possible implementation, the rectifier unit includes a diode and a resistor, with the negative terminal of the diode connected to one end of the resistor.

[0090] Specifically, in the rectifier unit, the cathode of the diode is connected to one end of the resistor. This connection method is mainly for rectifying the input current and adjusting the resistance. The diode is used to rectify the AC input signal into a DC signal with unidirectional conduction characteristics. This rectification method can effectively avoid the adverse effects of the AC signal on the relay operation and ensure the consistency of the current direction. In addition, the unidirectional nature of the diode can prevent the generation of reverse current when switching between different states, thereby protecting the stable operation of the downstream circuit.

[0091] The resistor's function is to regulate the magnitude of the rectified current, preventing excessive current from affecting the operational stability of the relay switching subunit. By adding a resistor to the rectifier circuit, the current amplitude can be effectively limited, avoiding shocks caused by sudden current changes during relay switching. This design is particularly suitable for applications with frequent switching. In the retrofitting of six-wire AC switch machines, the current-limiting effect of the resistor is especially important, ensuring a stable current supply during dual-mode switching and preventing relay malfunctions due to current fluctuations.

[0092] In one possible implementation, the control unit includes a power supply, a double push button, and a multi-channel control relay;

[0093] The first end of the double-pole button is connected to the positive terminal of the power supply, the second end of the double-pole button is connected to one end of the multi-channel control relay, the third end of the double-pole button is connected to the other end of the multi-channel control relay, and the fourth end of the double-pole button is connected to the negative terminal of the power supply.

[0094] A multi-channel control relay is used to simultaneously control the switching states of a first relay, a second relay, a third relay, and a fourth relay, in order to achieve synchronous control of multiple relays.

[0095] Specifically, the double-pole button in the control unit has four connection terminals: the first terminal is connected to the positive terminal of the power supply, and the fourth terminal is connected to the negative terminal, forming a complete circuit connection path. The second and third terminals of the double-pole button are respectively connected to the two ends of the multiplexer relay. With this circuit design, when the double-pole button is pressed, current flows from the positive terminal of the power supply through the double-pole button, to the multiplexer relay, and finally back to the negative terminal of the power supply, forming a closed circuit, thereby activating the multiplexer relay.

[0096] Multiplexed relays play a crucial role in the control unit, designed to achieve synchronous control of multiple relays. Specifically, the control unit can simultaneously control the switching states of the first, second, third, and fourth relays by controlling the operating states of the multiplexed relays. This multiplexing design ensures that when a mode switching is required, multiple relays can complete the state switching at the same time, enabling the system to respond quickly and preventing control deviations due to delays.

[0097] In one possible implementation, when the multiplex control relay simultaneously controls the first relay, the second relay, the third relay, and the fourth relay to be in the off state, the switching unit is in the first state.

[0098] When the multi-channel control relay simultaneously controls the first, second, third, and fourth relays to be in the closed state, the switching unit is in the second state.

[0099] Specifically, when the multi-channel control relay controls all relays (i.e., the first, second, third, and fourth relays) to be in the off state, the switching unit is in its first state. At this time, the connection path of the switching unit retains the original configuration of the six-wire system by default, allowing the six-wire AC switch machine to operate stably during normal daytime operation periods, relying on existing control logic. This design ensures the stability and reliability of the system, preventing modifications from interfering with the safe operation of existing lines.

[0100] On the other hand, when the preset modification test period begins, the control unit, through centralized control of the multi-channel control relays, simultaneously switches the first to fourth relays to the closed state, at which point the switching unit enters the second state. In this state, the internal connections of the switching unit are reconfigured so that the control signals of the five-wire AC switch machine circuit can directly act on the six-wire switch machine. Through the synchronous closing operation of the multi-channel control relays, the five-wire modification test mode is entered. When the switching unit is in the second state, the equivalent circuit diagram for testing the six-wire AC switch machine using the five-wire AC switch machine circuit can be found by referring to... Figure 3 , Figure 3 This is the circuit equivalent diagram of a five-wire AC switch machine in the second state provided by the present invention.

[0101] In one possible implementation, the dual-mode switching module further includes an indicator light unit;

[0102] The indicator light unit is used to display a preset first light when the switching unit is in the first state;

[0103] The indicator light unit is also used to display a preset second light when the switching unit is in the second state.

[0104] In the control circuit modification of a six-wire AC switch machine, an indicator light unit is designed in the dual-mode conversion module to clearly indicate the current operating status of the system and assist operators in mode monitoring. The indicator light unit uses different colored lights to visually display the current mode when the system is in different states, helping to ensure the accuracy and safety of operation.

[0105] Specifically, the indicator light unit includes two preset lights: when the switching unit is in the first state, the indicator light unit displays the preset first light, usually green, to indicate that the system is currently in normal operation. When the switching unit enters the second state, that is, when the system switches to the modification and testing mode, the indicator light unit displays the preset second light, usually red, to remind the operator that the system has switched to the five-wire modification and testing state.

[0106] like Figure 1As shown, the indicator unit specifically includes a power supply, a fifth relay, a first LED (represented by the symbol L in the figure), and a second LED (represented by the symbol H in the figure). A multi-channel control relay is used to simultaneously control the switching state of the fifth relay. The switching state of the fifth relay is consistent with the switching states of the first, second, third, and fourth relays. That is, when in the first state, the fifth relay is in the open state, connecting the first LED, which illuminates green to indicate that the first state is in operation. When in the second state, the fifth relay is in the closed state, connecting the second LED, which illuminates red to indicate that the second state is in operation.

[0107] Finally, based on the aforementioned embodiments, it should be noted that in the actual application of rail transit lines, there may be multiple nodes requiring modification of the six-wire AC switch machines. However, the control circuit for the modification of the six-wire AC switch machine provided in this application is mainly used for implementation at a single node. During the track modification process, since the switch machines at multiple nodes need to be debugged and tested one by one, before all nodes have been debugged or before obtaining third-party safety certification, normal daytime operation still requires the use of the six-wire switch machine circuit to control the six-wire switch machine to ensure the safety and stability of the existing system.

[0108] In this solution, the pre-set second time period, i.e., the non-operational nighttime period, is typically used for testing the five-wire system upgrade of a single node. However, due to the limited time at night, it is impossible to complete the upgrade work for all nodes within a single nighttime period. Therefore, the nighttime tests each day can only verify the upgrades of a small number of nodes. In the pre-set first time period of the next day, i.e., the daytime operation period, the nodes that have completed the upgrade tests must switch back to the six-wire control mode to maintain normal system operation together with other nodes that have not yet completed the upgrades.

[0109] Specifically, after completing the five-wire system modification test of one node each night, during daytime operation the following day, the control unit will switch to the first state via the control switching unit. This combines the tested five-wire AC switch circuit with the switching unit in the first state, effectively creating a six-wire switch circuit, which then works in conjunction with other nodes that have not undergone modification. In this way, the modified test node can participate in normal daytime operation in six-wire mode, thereby ensuring the overall stability and safety of the track line.

[0110] Once the six-wire switch machine circuits at all nodes have undergone modification testing and commissioning, and have obtained the necessary third-party safety certifications, the dual-mode conversion module on each node can be removed. This allows the five-wire AC switch machine circuits to directly control the six-wire switch machines, ultimately achieving comprehensive control of the entire track by the five-wire system. This method of gradual modification and segmented testing not only ensures normal daytime operational needs but also effectively reduces the risks associated with multi-node modifications, enabling the entire modification process to proceed smoothly and reliably, ultimately achieving a comprehensive upgrade of the track system.

[0111] This application also provides a control method for the modification of a six-wire AC switch machine, applicable to the circuit of any of the above embodiments, with reference to... Figure 4 , Figure 4 This is a flowchart illustrating the control method for the modification of a six-wire AC switch machine provided by the present invention. The method includes steps 1-2:

[0112] Step 1: Using the dual-mode conversion module, within a preset first time period, the default connection method of the internal circuit of the dual-mode conversion module is used to control the six-wire AC switch machine based on the five-wire AC switch machine circuit.

[0113] Step 2: Using the dual-mode conversion module, within a preset second time period, by changing the connection method of the internal circuit of the dual-mode conversion module, the modification test of the six-wire AC switch machine based on the five-wire AC switch machine circuit is realized.

[0114] In one possible implementation, the method specifically includes the following steps:

[0115] The control unit controls the switching unit to switch to the first state within a preset first time period, and controls the switching unit to switch to the second state within a preset second time period.

[0116] By switching the unit, in the first state, it combines with the five-wire AC switch machine circuit to realize the original six-wire control of the six-wire AC switch machine; and in the second state, it realizes the modification test of the six-wire AC switch machine based on the five-wire AC switch machine circuit.

[0117] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A control circuit for the modification of a six-wire AC switch machine, characterized in that, include: Six-wire AC switch machine, five-wire AC switch machine circuit and dual-mode conversion module; The five-wire AC switch machine circuit is connected to the first to fifth contacts of the six-wire AC switch machine through the first to fifth terminals of the six-wire AC switch machine; The first to fourth ends of the dual-mode conversion module are respectively connected to the sixth to ninth contacts of the six-wire AC switch machine, and the fifth end of the dual-mode conversion module is connected to the seventh contact of the six-wire AC switch machine through the sixth terminal of the six-wire AC switch machine. The dual-mode conversion module is used to control the six-wire AC switch machine based on the five-wire AC switch machine circuit within a preset first time period through the default connection mode of the internal circuit of the dual-mode conversion module. The dual-mode conversion module is also used to perform a modification test on the six-wire AC switch machine based on the five-wire AC switch machine circuit by changing the connection method of the internal circuit of the dual-mode conversion module within a preset second time period.

2. The control circuit for the modification of a six-wire AC switch machine according to claim 1, characterized in that, The dual-mode conversion module includes a control unit and a switching unit; The first to fourth ends of the switching unit are respectively connected to the sixth to ninth contacts of the six-wire AC switch machine, and the fifth end of the switching unit is connected to the seventh contact of the six-wire AC switch machine through the sixth terminal of the six-wire AC switch machine. The control unit is used to control the switching unit to switch to a first state within a preset first time period, and to control the switching unit to switch to a second state within a preset second time period; The switching unit is used, in the first state, to combine with the five-wire AC switch machine circuit to realize the original six-wire control of the six-wire AC switch machine. The switching unit is also used to perform a modification test of a six-wire AC switch machine based on the five-wire AC switch machine circuit in the second state.

3. The control circuit for the modification of a six-wire AC switch machine according to claim 2, characterized in that, The switching unit includes: a rectifier subunit and a relay switching subunit; The rectifier subunit is connected to the relay switching subunit; The first to fourth terminals of the relay switching subunit are respectively connected to the sixth to ninth contacts of the six-wire AC switch machine, and the fifth terminal of the relay switching subunit is connected to the seventh contact of the six-wire AC switch machine through the sixth terminal of the six-wire AC switch machine.

4. The control circuit for the modification of a six-wire AC switch machine according to claim 3, characterized in that, The relay switching subunit includes a first relay, a second relay, a third relay, and a fourth relay; The first terminal of the first relay is connected to the sixth contact of the six-wire AC switch machine; The first terminal of the second relay is connected to the seventh contact of the six-wire AC switch machine; The first terminal of the third relay is connected to the eighth contact of the six-wire AC switch machine; The first terminal of the fourth relay is connected to the ninth contact of the six-wire AC switch machine; The second terminal of the first relay and the second terminal of the fourth relay are both connected to one end of the rectifier subunit; The second terminal of the second relay and the second terminal of the third relay are both connected to the other end of the rectifier subunit; The third terminal of the first relay and the third terminal of the second relay are both connected to the seventh contact of the six-wire AC switch machine through the sixth terminal of the six-wire AC switch machine.

5. The control circuit for the modification of a six-wire AC switch machine according to claim 3, characterized in that, The rectifier subunit includes a diode and a resistor, with the negative terminal of the diode connected to one end of the resistor.

6. The control circuit for the modification of a six-wire AC switch machine according to claim 4, characterized in that, The control unit includes a power supply, a dual-button assembly, and a multi-channel control relay. The first end of the double button is connected to the positive terminal of the power supply, the second end of the double button is connected to one end of the multi-channel control relay, the third end of the double button is connected to the other end of the multi-channel control relay, and the fourth end of the double button is connected to the negative terminal of the power supply. The multi-channel control relay is used to simultaneously control the switching states of the first relay, the second relay, the third relay, and the fourth relay to achieve synchronous control of multiple relays.

7. The control circuit for the modification of a six-wire AC switch machine according to claim 6, characterized in that, When the multiplex control relay simultaneously controls the first relay, the second relay, the third relay, and the fourth relay to be in the off state, the switching unit is in the first state; When the multiplex control relay simultaneously controls the first relay, the second relay, the third relay, and the fourth relay to be in the closed state, the switching unit is in the second state.

8. The control circuit for the modification of a six-wire AC switch machine according to claim 2, characterized in that, The dual-mode conversion module also includes an indicator light unit; The indicator light unit is used to display a preset first light when the switching unit is in the first state; The indicator light unit is also used to display a preset second light when the switching unit is in the second state.

9. A control method for the modification of a six-wire AC switch machine, characterized in that, The control circuit applied to the modification of a six-wire AC switch machine as described in any one of claims 1-8 includes: Through the dual-mode conversion module, within a preset first time period, the control of the six-wire AC switch machine based on the five-wire AC switch machine circuit is realized through the default connection mode of the internal circuit of the dual-mode conversion module. By using the dual-mode conversion module, within a preset second time period, the connection method of the internal circuit of the dual-mode conversion module is changed, thereby enabling the modification and testing of the six-wire AC switch machine based on the five-wire AC switch machine circuit.

10. The control method for modifying a six-wire AC switch machine according to claim 9, characterized in that, The dual-mode conversion module includes a control unit and a switching unit, and the method specifically includes: The control unit controls the switching unit to switch to the first state within a preset first time period, and controls the switching unit to switch to the second state within a preset second time period. The switching unit, in the first state, combines with the five-wire AC switch machine circuit to realize the original six-wire control of the six-wire AC switch machine; and in the second state, it realizes the modification test of the six-wire AC switch machine based on the five-wire AC switch machine circuit.

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