Full-electronic scattered driving system and driving method thereof

Abstract

According to the full-electronic scattered driving system and the driving method thereof, the full-electronic scattered driving system comprises a recoverable driving module and a CPU module, the recoverable driving module drives a trackside signal device according to a driving command sent by the CPU module, and if current overload occurs in a driving loop in the driving process, the recoverable driving module drives the trackside signal device. And a recoverable device in the recoverable driving module is switched from a normal state to a stress state, and the recoverable device in the stress state disconnects the driving loop and stops driving the trackside signal equipment. According to the invention, the safety of the device is ensured, the probability of unavailability of the board card caused by wrong power supply or lightning stroke is reduced, the safety and reliability are improved, the usability of the device is enhanced, and the cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of rail transit signal equipment, and in particular to a fully electronic decentralized drive system based on recoverable devices and a drive method thereof. Background Art

[0002] With the continuous development of technology, in rail transit systems, all-electronic systems are gradually replacing relay circuits for driving and collecting trackside signal equipment. All-electronic systems are safer and smarter than relay circuits, but during the installation and commissioning of all-electronic systems, board component failures often occur due to incorrect power supply by construction workers. In areas with frequent lightning, all-electronic systems are also faced with the situation where lightning strikes damage components on the module.

[0003] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art. Summary of the invention

[0004] The object of the present invention is to provide a fully electronic decentralized drive system and a drive method thereof, which ensures the safety of the device, reduces the probability of board unavailability due to incorrect power supply or lightning strike, increases safety and reliability, enhances the availability of the device, and reduces costs.

[0005] In order to achieve the above object, the present invention provides a fully electronic scattered drive system, comprising:

[0006] A recoverable driving module, comprising a driving switch, a recoverable device and a driving circuit connected in series; the driving circuit is connected to a trackside signal device; the recoverable driving module is used to control the conduction or disconnection of the driving switch according to a driving command to realize the conduction or disconnection of the driving circuit, thereby realizing the driving or stopping of the trackside signal device; when a current overload occurs in the driving circuit, the recoverable device disconnects the driving circuit;

[0007] The CPU module is connected to the control center via a network and is connected to the recoverable drive module via a data interface. The CPU module receives external drive commands from the control center and sends corresponding drive commands to the recoverable drive module.

[0008] The all-electronic scattered drive system also includes: a current acquisition module, which is connected to the recoverable drive module and the CPU module, and the current acquisition module is used to collect the current value in the drive circuit in the recoverable drive module in real time and send the current value to the CPU module.

[0009] The fully electronic scattered drive system also includes: a self-test module, which is connected to the recoverable drive module and the CPU module, and the self-test module is used to regularly perform self-test on the drive circuit in the recoverable drive module and send the self-test result to the CPU module.

[0010] The recoverable device adopts a resettable fuse.

[0011] The present invention also provides a fully electronic scattered driving method, comprising:

[0012] The recoverable driver module receives the driver command sent by the CPU module;

[0013] The recoverable drive module drives the trackside signal equipment according to the received drive command;

[0014] If a current overload occurs in the driving circuit during the driving process, the recoverable device in the recoverable driving module switches from a normal state to a stress state. The recoverable device in the stress state disconnects the driving circuit and stops driving the trackside signal equipment.

[0015] The all-electronic scattered drive method further comprises:

[0016] The self-check module periodically performs self-check on the drive circuit in the recoverable drive module and sends the self-check result to the CPU module;

[0017] The CPU module receives the self-test result sent by the self-test module. If the self-test result is that the self-test passes, the CPU module sends a start drive command to the recoverable drive module. If the self-test result is that the self-test fails, the CPU module sends a stop drive command to the recoverable drive module.

[0018] The all-electronic scattered drive method further comprises:

[0019] 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;

[0020] The CPU module receives the current value sent by the current acquisition module and determines whether the drive circuit fails. 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 is overloaded, and the CPU module sends a stop drive command to the recoverable drive module.

[0021] The recoverable driver module performs operations according to the driver command from the CPU module;

[0022] If a start driving command is received, the driving switch in the driving module can be closed, the driving circuit is turned on, and the trackside signal equipment starts to be driven;

[0023] If a stop drive command is received, the drive switch in the recovery drive module is disconnected, the drive circuit is disconnected, and the drive trackside signal equipment is stopped.

[0024] Optionally, 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 expected information, if they match, the self-test passes, and if they do not match, the self-test fails.

[0025] The self-test period is 1.5 hours to 3 hours.

[0026] Optionally, the method for the self-test module to perform self-test on the drive circuit includes: driving the drive circuit through action, reading the state of the drive circuit, and comparing the read state information with expected information. If they match, the self-test passes; if they do not match, the self-test fails.

[0027] The self-check period is 200ms to 300ms.

[0028] The acquisition period of the current acquisition module is 200ms to 300ms.

[0029] After the CPU module sends a stop driving command to the recoverable driving module, the CPU module sends an alarm signal to the control center.

[0030] The present invention sets a recoverable device in the driving circuit. When the driving circuit is overloaded due to a fault, the recoverable device can automatically disconnect the driving circuit, thereby ensuring the safety of the device and reducing the probability of the board being unavailable due to incorrect power supply or lightning strike. When the current overload occurs, the current acquisition module detects the current abnormality, and the CPU module sends a stop drive command to the recoverable drive module according to the current abnormality, so that the drive switch is disconnected, ensuring that the driving circuit is physically disconnected, thereby increasing safety and reliability. The recoverable device can automatically restore to a normal state after a period of time. After the fault is eliminated, the entire all-electronic scattered drive system can work normally again, avoiding the replacement of devices, enhancing the availability of devices, and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of a fully electronic decentralized drive system provided by the present invention.

[0032] Figure 2 It is a flow chart of a fully electronic scattered driving method provided in an embodiment of the present invention.

[0033] Figure 3 It is the workflow diagram of the self-check module.

[0034] Figure 4 This is the workflow diagram of the current acquisition module.

[0035] Figure 5 This is the workflow diagram of the CPU module.

[0036] Figure 6 This is the workflow diagram of the recoverable driver module. DETAILED DESCRIPTION

[0037] The following is based on Figure 1 to Figure 6 , specifically describe the preferred embodiments of the present invention.

[0038] like Figure 1 As shown, the present invention provides a fully electronic scattered drive system, comprising:

[0039] A recoverable driving module 1, comprising a driving switch, a recoverable device and a driving circuit connected in series, wherein the driving circuit is connected to a trackside signal device, and the recoverable driving module 1 is used to control the conduction or disconnection of the driving switch according to a driving command to realize the conduction or disconnection of the driving circuit, thereby realizing the driving or stopping of the trackside signal device. When a current overload occurs in the driving circuit, the recoverable device disconnects the driving circuit; in this embodiment, the recoverable device adopts a resettable fuse, model LVR033K, and under normal circumstances, the resettable fuse is in a low resistance state. When a current overload occurs, the resettable fuse quickly switches from the low resistance state to the high resistance state, so that the driving circuit is in an almost disconnected state. After a period of time, the resettable fuse automatically resets back to the low resistance state;

[0040] A self-check module 2, connected to the recoverable driving module 1, for periodically performing a self-check on the driving circuit in the recoverable driving module 1;

[0041] A current acquisition module 3, connected to the recoverable driving module 1, and used for real-time acquisition of the current value in the driving circuit in the recoverable driving module 1;

[0042] The CPU module 4 is connected to the control center via a network, and is connected to the recoverable drive module 1, the self-test module 2 and the current acquisition module 3 via a data interface. The CPU module 4 receives an external drive command from the control center, a self-test result from the self-test module 2 and a current value from the current acquisition module 3, and the CPU module 4 sends a corresponding drive command to the recoverable drive module 1.

[0043] like Figure 2 As shown, the present invention also provides a fully electronic scattered driving method, comprising the following steps:

[0044] Step S1, the fully electronic scattered drive system is powered on, and the recoverable drive module 1, the self-test module 2, the current acquisition module 3 and the CPU module 4 are powered on and started;

[0045] Step S2, the self-check module 2 regularly performs self-check on the driving circuit in the recoverable driving module 1, and sends the self-check result to the CPU module 4;

[0046] There are two methods for the self-test module 2 to perform self-test:

[0047] The first method is to directly read the state of the drive circuit (RIT), compare the read state information with the expected information, and pass the self-test if they match, otherwise fail the self-test;

[0048] The second method is to drive the driving circuit (SCT) by action, then read the state of the driving circuit, compare the read state information with the expected information, and pass the self-test if they match, otherwise fail the self-test;

[0049] If the self-test module 2 adopts the first self-test method, the self-test period is 1.5 hours to 3 hours, preferably 2 hours;

[0050] If the self-test module 2 adopts the second self-test method, the self-test period is 200ms to 300ms, preferably 250ms;

[0051] Step S3, the CPU module 4 sends a drive command to the recoverable drive module 1 according to the self-test result;

[0052] If the self-test passes, the CPU module 4 sends a drive command to the recoverable drive module 1;

[0053] If the self-test fails, the CPU module 4 sends a stop drive command to the recoverable drive module 1 and issues an alarm;

[0054] Step S4, the restorable driving module 1 drives the trackside signal equipment according to the received driving command;

[0055] Step S5, the current acquisition module 3 regularly acquires the current value of the driving circuit in the recoverable driving module 1 and sends it to the CPU module 4; the acquisition cycle of the current acquisition module 3 is 200ms to 300ms, preferably 250ms;

[0056] Step S6, the CPU module 4 determines whether a fault occurs in the drive circuit based on the current value obtained by the 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 is overloaded, and the drive is stopped and an alarm is sounded.

[0057] like Figure 3 As shown, the self-test module 2 regularly performs self-test on the driving circuit in the recoverable driving module 1 , and the self-test results include self-test pass and self-test fail. The self-test module 2 sends the self-test results to the CPU module 4 .

[0058] like Figure 4 As shown, the current acquisition module 3 regularly acquires the current value of the drive circuit in the recoverable drive module 1 and sends it to the CPU module 4 .

[0059] like Figure 5 As shown, the CPU module 4 receives an external drive command from the control center; the CPU module 4 receives the self-test result periodically sent by the self-test module 2. If the self-test result is that the self-test passes, the CPU module 4 sends a start drive command to the recoverable drive module 1; if the self-test result is that the self-test fails, the CPU module 4 sends a stop drive command to the recoverable drive module 1; the CPU module 4 receives the current value periodically sent by the 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 is overloaded, and the CPU module 4 sends a stop drive command to the recoverable drive module 1. At the same time, the CPU module 4 sends an alarm signal to the control center to remind the maintenance personnel to handle it.

[0060] like Figure 6 As shown, the recoverable drive module 1 regularly receives a drive command from the CPU module 4. If the received command is to start driving, the drive switch in the recoverable drive module 1 is closed, the drive circuit is turned on, and the trackside signal device starts to be driven. If the received command is to stop driving, the drive switch in the recoverable drive module 1 is turned off, the drive circuit is turned off, and the trackside signal device stops being driven. If the drive circuit is overloaded during the driving process, the recoverable device in the recoverable drive module 1 is switched from a normal state to a stress state, and the recoverable device in the stress state disconnects the drive circuit and stops driving the trackside signal device.

[0061] In this embodiment, the recoverable device adopts 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 the low resistance state to the high resistance state, so that the drive circuit is almost disconnected. After a period of time, the resettable fuse automatically resets back to the low resistance state.

[0062] The present invention sets a recoverable device in the driving circuit. When the driving circuit is overloaded due to a fault, the recoverable device can automatically disconnect the driving circuit, thereby ensuring the safety of the device and reducing the probability of the board being unavailable due to incorrect power supply or lightning strike. When the current overload occurs, the current acquisition module detects the current abnormality, and the CPU module sends a stop drive command to the recoverable drive module according to the current abnormality, so that the drive switch is disconnected, ensuring that the driving circuit is physically disconnected, thereby increasing safety and reliability. The recoverable device can automatically restore to a normal state after a period of time. After the fault is eliminated, the entire all-electronic scattered drive system can work normally again, avoiding the replacement of devices, enhancing the availability of devices, and reducing costs.

[0063] It should be noted that, in the embodiments of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0064] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0066] It should also be understood that the terms used in this application specification are only for the purpose of describing specific embodiments and are not intended to limit the application. As used in this application specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0067] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0068] As used in this specification and the appended claims, the term "if" may be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined" or "if [described condition or event] is detected" may be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0069] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as limiting the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present invention. After reading the above content, it will be obvious for those skilled in the art to make various modifications and substitutions to the present invention. Therefore, the scope of protection of the present invention should be defined by the attached claims.

Claims

1. A fully electronic decentralized drive system, characterized in that: Include: A recoverable driving module, comprising a driving switch, a recoverable device and a driving circuit connected in series; the driving circuit is connected to a trackside signal device; the recoverable driving module is used to control the conduction or disconnection of the driving switch according to a driving command to realize the conduction or disconnection of the driving circuit, thereby realizing the driving or stopping of the trackside signal device; when a current overload occurs in the driving circuit, the recoverable device disconnects the driving circuit; The CPU module is connected to the control center through a network and connected to the recoverable drive module through a data interface. The CPU module receives external drive commands from the control center. The CPU module sends a corresponding driving command to the recoverable driving module.

2. The all-electronic decentralized drive system according to claim 1, characterized in that: The all-electronic scattered drive system also includes: a current acquisition module, which is connected to the recoverable drive module and the CPU module, and the current acquisition module is used to collect the current value in the drive circuit in the recoverable drive module in real time and send the current value to the CPU module.

3. The all-electronic decentralized drive system according to claim 1, characterized in that: The fully electronic scattered drive system also includes: a self-test module, which is connected to the recoverable drive module and the CPU module, and the self-test module is used to regularly perform self-test on the drive circuit in the recoverable drive module and send the self-test result to the CPU module.

4. The all-electronic decentralized drive system according to claim 1, characterized in that: The recoverable device adopts a resettable fuse.

5. A method for implementing a fully electronic decentralized drive system according to any one of claims 1 to 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 signal equipment according to the received drive command; If a current overload occurs in the driving circuit during the driving process, the recoverable device in the recoverable driving module switches from a normal state to a stress state. The recoverable device in the stress state disconnects the driving circuit and stops driving the trackside signal equipment.

6. The all-electronic scattered driving method according to claim 5, characterized in that: The all-electronic scattered drive method further comprises: The self-check module periodically performs self-check on the drive circuit in the recoverable drive module and sends the self-check result to the CPU module; The CPU module receives the self-test result sent by the self-test module. If the self-test result is that the self-test passes, the CPU module sends a start drive command to the recoverable drive module. If the self-test result is that the self-test fails, the CPU module sends a stop drive command to the recoverable drive module.

7. The all-electronic scattered driving method according to claim 6, characterized in that: The all-electronic scattered drive method further comprises: 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 fails. 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 is overloaded, and the CPU module sends a stop drive command to the recoverable drive module.

8. The all-electronic scattered driving method according to claim 7, characterized in that: The recoverable driver module performs operations according to the driver command from the CPU module; If a start driving command is received, the driving switch in the driving module can be closed, the driving circuit is turned on, and the trackside signal equipment starts to be driven; If a stop drive command is received, the drive switch in the recovery drive module is disconnected, the drive circuit is disconnected, and the drive trackside signal equipment is stopped.

9. The all-electronic scattered driving method according to claim 6, characterized in that: 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, if they match, the self-test passes, and if they do not match, the self-test fails.

10. The all-electronic scattered driving method according to claim 9, characterized in that: The self-test period is 1.5 hours to 3 hours.

11. The all-electronic scattered driving method according to claim 6, characterized in that: The method for the self-test module to perform self-test on the drive circuit includes: driving the drive circuit through action, reading the state of the drive circuit, and comparing the read state information with expected information. If they match, the self-test passes; if they do not match, the self-test fails.

12. The all-electronic scattered driving method according to claim 11, characterized in that: The self-check period is 200ms to 300ms.

13. The all-electronic scattered driving method according to claim 7, characterized in that: The acquisition period of the current acquisition module is 200ms to 300ms.

14. The all-electronic decentralized driving method according to claim 6 or 7, characterized in that: After the CPU module sends a stop driving command to the recoverable driving module, the CPU module sends an alarm signal to the control center.

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