Fully electronic discrete drive system and drive method therefor

Abstract

A fully electronic discrete drive system and a drive method therefor. The fully electronic discrete drive system comprises a recoverable drive module and a CPU module. The recoverable drive module drives a trackside signal device on the basis of a drive command sent by the CPU module. If a current overload occurs in a drive circuit in a driving process, a recoverable device in the recoverable drive module switches from a normal state to a stress state, and the recoverable device, which is in the stress state, disconnects the drive circuit, thereby stopping the driving of the trackside signaling device. The present invention ensures the safety of the device, reduces the probability that a board is unavailable due to incorrect power supply or lightning strike, increases the safety reliability, enhances the availability of the device, and reduces the cost.

Description

A fully electronic discrete drive system and its driving method Technical Field

[0001] This invention relates to the field of rail transit signaling equipment, and in particular to a fully electronic discrete drive system based on recoverable devices and its drive method. Background Technology

[0002] With the continuous development of technology, fully electronic systems are gradually replacing relay circuits in rail transit systems for driving and acquiring trackside signal equipment. While fully electronic systems are safer and more intelligent than relay circuits, they are frequently prone to component failures due to incorrect power supply by construction personnel during installation and commissioning. Furthermore, in areas with frequent lightning strikes, fully electronic systems also face the risk of damage to components on modules caused by lightning strikes.

[0003] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0004] Disclosure of the invention

[0005] The purpose of this invention is to provide an all-electronic discrete drive system and its driving method, which ensures device safety, reduces the probability of board unavailability due to incorrect power supply or lightning strikes, increases safety and reliability, enhances device availability, and reduces costs.

[0006] To achieve the above objectives, the present invention provides an all-electronic discrete drive system, comprising:

[0007] A resettable drive module includes a drive switch, a resettable device, and a drive circuit connected in series. The drive circuit is connected to a trackside signaling device. The resettable drive module is used to control the drive switch to turn on or off according to a drive command, so as to turn the drive circuit on or off, thereby driving or stopping the trackside signaling device. When a current overload occurs in the drive circuit, the resettable device disconnects the drive circuit.

[0008] The CPU module is connected to the control center via a network and to the recoverable driver module via a data interface. The CPU module receives external driver commands from the control center and sends corresponding driver commands to the recoverable driver module.

[0009] The all-electronic discrete drive system further includes: a current acquisition module, which connects the recoverable drive module and the CPU module. The current acquisition module is used to acquire the current value in the drive circuit of the recoverable drive module in real time and send the current value to the CPU module.

[0010] The all-electronic discrete drive system further includes a self-test module, which connects the recoverable drive module and the CPU module. The self-test module is used to periodically perform self-tests on the drive circuit in the recoverable drive module and send the self-test results to the CPU module.

[0011] The resettable device is a resettable fuse.

[0012] This invention also provides an all-electronic discrete driving method, comprising:

[0013] The recoverable driver module receives the driver command sent by the CPU module;

[0014] The recoverable drive module drives the trackside signaling device according to the received drive command;

[0015] If a current overload occurs in the drive circuit during the drive process, the resettable device in the resettable drive module switches from the normal state to the stress state. The resettable device in the stress state disconnects the drive circuit and stops driving the trackside signal equipment.

[0016] The all-electronic discrete driving method also includes:

[0017] The self-test module periodically performs a self-test on the drive circuit in the recoverable drive module and sends the self-test results to the CPU module.

[0018] The CPU module receives the self-test result sent by the self-test module. If the self-test result is a pass, the CPU module sends a start driver command to the recoverable driver module. If the self-test result is a fail, the CPU module sends a stop driver command to the recoverable driver module.

[0019] The all-electronic discrete driving method also includes:

[0020] The current acquisition module periodically acquires the current value of the drive circuit in the recoverable drive module and sends the current value to the CPU module;

[0021] The CPU module receives the current value sent by the current acquisition module and determines whether the drive circuit has malfunctioned. If the current value is less than or equal to the threshold, it means that the drive circuit is working normally and the current drive state is maintained. If the current value exceeds the threshold, it means that the drive circuit has experienced current overload, and the CPU module sends a stop drive command to the recoverable drive module.

[0022] The recoverable driver module performs operations based on driver commands from the CPU module;

[0023] If a start drive command is received, the drive switch in the drive module can be closed again, the drive circuit can be turned on, and the trackside signal equipment can be started.

[0024] If a stop drive command is received, the drive switch in the drive module can be turned off, the drive circuit can be disconnected, and the drive of the railside signal equipment can be stopped.

[0025] Optionally, the method by which the self-test module performs a self-test on the drive circuit includes: directly reading the state of the drive circuit, comparing the read state information with the expected information, and if they match, the self-test passes; otherwise, the self-test fails.

[0026] The self-test cycle is 1.5 hours to 3 hours.

[0027] Optionally, the method for the self-test module to perform a self-test on the drive circuit includes: driving the drive circuit by an action, reading the state of the drive circuit, comparing the read state information with the expected information, and if they match, the self-test passes; otherwise, the self-test fails.

[0028] The self-test cycle is 200ms to 300ms.

[0029] The current acquisition module has an acquisition period of 200ms to 300ms.

[0030] After the CPU module sends a stop driver command to the recoverable driver module, the CPU module sends an alarm signal to the control center.

[0031] This invention incorporates a resettable device in the drive circuit. When a current overload occurs due to a fault in the drive circuit, the resettable device automatically disconnects the drive circuit, ensuring device safety and reducing the probability of board unavailability due to incorrect power supply or lightning strikes. Simultaneously with the current overload, the current acquisition module detects the current anomaly. The CPU module sends a stop drive command to the resettable drive module based on the current anomaly, causing the drive switch to disconnect and ensuring a physical disconnection of the drive circuit, thus increasing safety and reliability. The resettable device can automatically return to normal after a period of time. After the fault is cleared, the entire all-electronic discrete drive system can resume normal operation, avoiding the need to replace components, enhancing device availability, and reducing costs.

[0032] Brief description of the attached figures

[0033] Figure 1 is a schematic diagram of the structure of an all-electronic discrete drive system provided by the present invention.

[0034] Figure 2 is a flowchart of an all-electronic discrete driving method provided in an embodiment of the present invention.

[0035] Figure 3 is a flowchart of the self-test module.

[0036] Figure 4 is a flowchart of the current acquisition module.

[0037] Figure 5 is a flowchart of the CPU module's workflow.

[0038] Figure 6 is a flowchart of the recovery driver module.

[0039] Best way to implement the present invention

[0040] The preferred embodiments of the present invention will be described in detail below with reference to Figures 1 to 6.

[0041] As shown in Figure 1, the present invention provides an all-electronic discrete drive system, comprising:

[0042] The resettable drive module 1 includes a drive switch, a resettable device, and a drive circuit connected in series. The drive circuit is connected to the trackside signaling equipment. The resettable drive module 1 is used to control the drive switch to turn on or off according to the drive command, so as to turn on or off the drive circuit, thereby driving or stopping the drive of the trackside signaling equipment. When a current overload occurs in the drive circuit, the resettable device disconnects the drive circuit. In this embodiment, the resettable device is a resettable fuse, model LVR033K. Under normal conditions, the resettable fuse is in a low resistance state. When a current overload occurs, the resettable fuse quickly switches from a low resistance state to a high resistance state, making the drive circuit almost disconnected. After a period of time, the resettable fuse automatically resets back to the low resistance state.

[0043] Self-test module 2, which is connected to the recoverable drive module 1, is used to periodically perform self-tests on the drive circuit in the recoverable drive module 1;

[0044] The current acquisition module 3 is connected to the recoverable drive module 1 and is used to acquire the current value in the drive circuit of the recoverable drive module 1 in real time.

[0045] CPU module 4 is connected to the control center via a network and to the recoverable drive module 1, the self-test module 2, and the current acquisition module 3 via a data interface. CPU module 4 receives external drive commands from the control center, self-test results from the self-test module 2, and current values ​​from the current acquisition module 3. CPU module 4 then sends corresponding drive commands to the recoverable drive module 1.

[0046] As shown in Figure 2, the present invention also provides an all-electronic discrete driving method, comprising the following steps:

[0047] Step S1: Power on the all-electronic discrete drive system, and power on and start the recoverable drive module 1, self-test module 2, current acquisition module 3 and CPU module 4.

[0048] Step S2: The self-test module 2 periodically performs a self-test on the drive circuit in the recoverable drive module 1 and sends the self-test results to the CPU module 4.

[0049] The self-test module 2 performs self-tests in two ways:

[0050] The first method is to directly read the state of the drive circuit (RIT), compare the read state information with the expected information, and if they match, the self-test is passed; otherwise, the self-test is not passed.

[0051] The second method is to drive the drive circuit (SCT) by action, then read the state of the drive circuit, compare the read state information with the expected information, and if they match, the self-test is passed; otherwise, the self-test is not passed.

[0052] If the self-test module 2 adopts the first self-test method, the self-test cycle is 1.5 hours to 3 hours, preferably 2 hours;

[0053] If the self-test module 2 adopts the second self-test method, the self-test cycle is 200ms to 300ms, preferably 250ms;

[0054] Step S3: Based on the self-test results, CPU module 4 sends the driver command to recoverable driver module 1;

[0055] If the self-test passes, CPU module 4 sends a driver command to the recoverable driver module 1;

[0056] If the self-test fails, CPU module 4 sends a stop driver command to the recoverable driver module 1 and issues an alarm.

[0057] Step S4: The recoverable drive module 1 drives the trackside signal device according to the received drive command;

[0058] Step S5: The current acquisition module 3 periodically acquires the current value of the drive circuit in the recoverable drive module 1 and sends it to the CPU module 4; the acquisition period of the current acquisition module 3 is 200ms to 300ms, preferably 250ms.

[0059] Step S6: CPU module 4 determines whether the drive circuit has malfunctioned based on the current value obtained by current acquisition module 3. If the current value is less than or equal to the threshold, it means that the drive circuit is working normally and the current drive state is maintained. If the current value exceeds the threshold, it means that the drive circuit has experienced current overload, the drive is stopped and an alarm is triggered.

[0060] As shown in Figure 3, the self-test module 2 periodically performs a self-test on the drive circuit in the recoverable drive module 1. The self-test result includes self-test pass and self-test fail. The self-test module 2 sends the self-test result to the CPU module 4.

[0061] As shown in Figure 4, the current acquisition module 3 periodically acquires the current value of the drive circuit in the recoverable drive module 1 and sends it to the CPU module 4.

[0062] As shown in Figure 5, CPU module 4 receives external drive commands from the control center; CPU module 4 receives self-test results periodically sent by self-test module 2. If the self-test result is a pass, CPU module 4 sends a start drive command to recoverable drive module 1; if the self-test result is a fail, CPU module 4 sends a stop drive command to recoverable drive module 1; CPU module 4 receives current values ​​periodically sent by current acquisition module 3. If the current value is less than or equal to the threshold, it indicates that the drive circuit is working normally, and the current drive state is maintained. If the current value exceeds the threshold, it indicates that the drive circuit has experienced current overload, and CPU module 4 sends a stop drive command to recoverable drive module 1. At the same time, CPU module 4 sends an alarm signal to the control center to remind maintenance personnel to handle the situation.

[0063] As shown in Figure 6, the recoverable drive module 1 periodically receives drive commands from the CPU module 4. If a start drive command is received, the drive switch in the recoverable drive module 1 closes, the drive circuit is activated, and the trackside signaling device begins to drive. If a stop drive command is received, the drive switch in the recoverable drive module 1 opens, the drive circuit is disconnected, and the trackside signaling device stops driving. If a current overload occurs in the drive circuit during the drive process, the recoverable device in the recoverable drive module 1 switches from the normal state to the stress state. The recoverable device in the stress state disconnects the drive circuit and stops driving the trackside signaling device.

[0064] In this embodiment, the resettable device is a resettable fuse, model LVR033K. Under normal circumstances, the resettable fuse is in a low resistance state. When a current overload occurs, the resettable fuse quickly switches from a low resistance state to a high resistance state, causing the drive circuit to be almost disconnected. After a period of time, the resettable fuse automatically resets back to the low resistance state.

[0065] This invention incorporates a resettable device in the drive circuit. When a current overload occurs due to a fault in the drive circuit, the resettable device automatically disconnects the drive circuit, ensuring device safety and reducing the probability of board unavailability due to incorrect power supply or lightning strikes. Simultaneously with the current overload, the current acquisition module detects the current anomaly. The CPU module sends a stop drive command to the resettable drive module based on the current anomaly, causing the drive switch to disconnect and ensuring a physical disconnection of the drive circuit, thus increasing safety and reliability. The resettable device can automatically return to normal after a period of time. After the fault is cleared, the entire all-electronic discrete drive system can resume normal operation, avoiding the need to replace components, enhancing device availability, and reducing costs.

[0066] It should be noted that, in the embodiments of the present invention, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0067] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0068] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of the described feature, integral, step, operation, element and / or component, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0069] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0070] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0071] As used in this specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrases "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."

[0072] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention. After reading the above content, various modifications and substitutions to the present invention will be obvious to those skilled in the art. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A fully electronic zero-dispersion driving system, characterized by, Include: A resettable drive module includes a drive switch, a resettable device, and a drive circuit connected in series. The drive circuit is connected to a trackside signaling device. The resettable drive module is used to control the drive switch to turn on or off according to a drive command, so as to turn the drive circuit on or off, thereby driving or stopping the trackside signaling device. When a current overload occurs in the drive circuit, the resettable device disconnects the drive circuit. The CPU module is connected to the control center via a network and to the recoverable driver module via a data interface. The CPU module receives external driver commands from the control center and sends corresponding driver commands to the recoverable driver module.

2. The all-electronic zero-beat drive system of claim 1, wherein, The all-electronic discrete drive system further includes: a current acquisition module, which connects the recoverable drive module and the CPU module. The current acquisition module is used to acquire the current value in the drive circuit of the recoverable drive module in real time and send the current value to the CPU module.

3. The all-electronic zero dispersion drive system of claim 1, wherein, The all-electronic discrete drive system further includes a self-test module, which connects the recoverable drive module and the CPU module. The self-test module is used to periodically perform self-tests on the drive circuit in the recoverable drive module and send the self-test results to the CPU module.

4. The all-electronic zero-beat drive system of claim 1, wherein, The resettable device uses a resettable fuse.

5. A full-electronic zero spread driving method implemented by using the full-electronic zero spread driving system according to any one of claims 1-4, characterized in that, Include: The recoverable driver module receives the driver command sent by the CPU module; The recoverable drive module drives the trackside signaling device according to the received drive command; If a current overload occurs in the drive circuit during the drive process, the resettable device in the resettable drive module switches from the normal state to the stress state. The resettable device in the stress state disconnects the drive circuit and stops driving the trackside signal equipment.

6. The all-electronic zero spread drive method of claim 5, wherein, The all-electronic discrete driving method also includes: The self-test module periodically performs a self-test on the drive circuit in the recoverable drive module and sends the self-test results to the CPU module. The CPU module receives the self-test result sent by the self-test module. If the self-test result is a pass, the CPU module sends a start driver command to the recoverable driver module. If the self-test result is a fail, the CPU module sends a stop driver command to the recoverable driver module.

7. The all-electronic zero spread drive method of claim 6, wherein, The all-electronic discrete driving method also includes: The current acquisition module periodically acquires the current value of the drive circuit in the recoverable drive module and sends the current value to the CPU module; The CPU module receives the current value sent by the current acquisition module and determines whether the drive circuit has malfunctioned. If the current value is less than or equal to the threshold, it means that the drive circuit is working normally and the current drive state is maintained. If the current value exceeds the threshold, it means that the drive circuit has experienced current overload, and the CPU module sends a stop drive command to the recoverable drive module.

8. The all-electronic zero spread drive method of claim 7, wherein, The recoverable driver module performs operations based on driver commands from the CPU module; If a start drive command is received, the drive switch in the drive module can be closed again, the drive circuit can be turned on, and the trackside signal equipment can be started. If a stop drive command is received, the drive switch in the drive module can be turned off, the drive circuit can be disconnected, and the drive of the railside signal equipment can be stopped.

9. The all-electronic zero spread drive method of claim 6, wherein, The method for the self-test module to perform self-test on the drive circuit includes: directly reading the state of the drive circuit, comparing the read state information with the expected information, and if they match, the self-test passes; otherwise, the self-test fails.

10. The all-electronic zero spread drive method of claim 9, wherein, The self-test cycle is 1.5 hours to 3 hours.

11. The all-electronic zero spread drive method of claim 6, wherein, The method for the self-test module to perform a self-test on the drive circuit includes: driving the drive circuit by an action, reading the state of the drive circuit, comparing the read state information with the expected information, and if they match, the self-test passes; otherwise, the self-test fails.

12. The all-electronic zero spread drive method of claim 11, wherein, The self-test cycle is 200ms to 300ms.

13. The all-electronic zero spread drive method of claim 7, wherein, The current acquisition module has an acquisition period of 200ms to 300ms.

14. The all-electronic zero spread drive method according to claim 6 or 7, wherein After the CPU module sends a stop driver command to the recoverable driver module, the CPU module sends an alarm signal to the control center.

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