N+2 logic configuration type redundancy axle counting automatic blocking system and method

Abstract

The invention discloses an N + 2 logic configuration type redundancy axle counting automatic blocking system and method, and belongs to the technical field of train safety signal control. According to the system, two sensors are additionally arranged on an existing line and installed at the position of a station entering signal machine, an existing standby core wire can be utilized, the redundancy problem of an axle counting automatic blocking system can be solved under the condition that only two sensors and two sets of cable core wires are additionally arranged, the requirement for new project construction is met, and the problem of transformation of the existing line is solved. According to the method, a logical algorithm method utilizing an auxiliary section and a virtual section is creatively provided, and in combination with an entity block section, the auxiliary section and a virtual small block section, under the condition that only two sensors are additionally arranged on hardware, a logical processing algorithm is ingeniously utilized, and after any single sensor breaks down, an axle counting system can still work normally.

Description

Technical Field

[0001] The invention belongs to the technical field of train safety signal control, and in particular relates to an N+2 logic configuration type redundant axle counting automatic blocking system and method. Background Art

[0002] In the current single-line axle counting automatic block system, in order to improve the single-line driving efficiency, the station is usually divided into several automatic block sub-sections. The length of each sub-section is usually 1.2 to 1.5 km. Wheel sensors are installed at the entry and exit of each sub-section to perform segmentation and section occupancy / idleness checks. Figure 1 As shown in the figure, the axle counting points are set at the exit signals at both ends of the section, such as Figure 1 The J1 and Jn points in the figure, usually n is between 5 and 10, can form a small occlusion partition with the adjacent points, such as Figure 1 1G and n-1G shown in the figure, and J1 and Jn can independently constitute an independent interval large occlusion area DQG.

[0003] In the actual application scenarios, outdoor axle counting points do not adopt redundant design. If any axle counting point fails, the entire section axle counting block system will be unusable. Since the single-line axle counting automatic block system is usually set up on lines with relatively high traffic density, and usually in mountainous areas, after the outdoor axle counting point fails, it takes a long time for on-site maintenance personnel to reach the fault point, resulting in a relatively long overall fault handling time, which has a greater impact on traffic. Under the existing mature technology, to solve this problem, only one redundant wheel sensor can be set at the outdoor dividing point, and the current n wheel sensors at the dividing point are set to double the design of n+n wheel sensors, and at the same time, double the cables need to be laid.

[0004] The traditional redundant design will encounter the following problems: first, the construction cost increases, and the total construction cost is nearly twice that of the non-redundant setting. This method can be used on new lines, and there are no other problems except the cost increase; second, in the existing single-line axle counting automatic block system, if you want to add redundant design, you will face the problem of digging cable trenches for the added redundant wheel sensors and indoor transmission cables, laying cables separately, and redesigning the existing mechanical indoor engineering, which will greatly increase the construction cost. The overall cost of the existing and new ones is greater than 2 times the non-redundant cost, and the construction difficulty is also greater. In actual engineering applications, the superimposed redundant solutions of existing lines have been rejected due to the cost and construction difficulty. The redundant setting problem must be considered only when the equipment and cables are overhauled.

[0005] At present, the existing lines can only reduce the impact time of the failure by preparing more spare parts at each station and increasing the training of maintenance personnel. When the outdoor axle counting point fails, the fault can be quickly located, and the fault can be handled and replaced in time, so as to appropriately reduce the impact time of the failure. Summary of the invention

[0006] The purpose of the present invention is to provide an N+2 logic configuration redundant axle counting automatic blocking system and method to address the above-mentioned deficiencies in the prior art, so as to solve the problem that redundant design under current technology greatly increases costs and makes it difficult to transform existing lines.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] In a first aspect, an N+2 logic configuration redundant axle counting automatic blocking system comprises:

[0009] Wheel sensor: used to collect the wheel set information of the passing train and transmit the train wheel set information to the evaluation board;

[0010] Evaluation board: used for evaluating the train wheel set information, converting the evaluated train wheel set information into digital signals and transmitting them to the axle counting centralized processing unit;

[0011] Axle counting centralized processing unit: used to determine the occupied / idle status of the section according to the train wheel set information, and transmit the occupied / idle status information of the section to the interlocking equipment;

[0012] and, receiving a reset signal from the interlocking device when the axle counting device is put into use for the first time or after a fault is repaired;

[0013] and, transmitting the working status information of the axle counting equipment to the centralized monitoring equipment;

[0014] Interlocking equipment: used to receive the section occupied / idle status information, providing a basis for subsequent driving;

[0015] and, providing a reset signal to the axle counting device when the axle counting device is put into use for the first time or after a fault is repaired;

[0016] Centralized monitoring equipment: used to store, display and playback the working status information of the axle counting equipment.

[0017] In a second aspect, a method of an N+2 logic configuration redundant axle counting automatic blocking system comprises the following steps:

[0018] S1, N main wheel sensors are arranged at the block division points of the outdoor automatic block section, and one spare wheel sensor J1' and Jn' are respectively arranged at the two station ends of the outdoor automatic block section, that is, at the positions of the wheel sensors J1 and Jn, and a total of N+2 wheel sensors are arranged;

[0019] S2, the axle counting centralized processing unit configures N+2 wheel sensors to form three types of sections;

[0020] S3, the axle counting centralized processing unit determines the occupied / idle status of the segment according to the three types of segments;

[0021] S4. The axle counting centralized processing unit transmits the section status information to the interlocking device; when the axle counting device is reset, the interlocking device transmits the reset signal to the axle counting centralized processing unit; the axle counting centralized processing unit transmits the equipment working status information to the centralized monitoring device.

[0022] Furthermore, in said S2, the three types of segments are: physical segment, auxiliary segment and virtual segment;

[0023] The physical occlusion sections include:

[0024] The main section 1G formed by the wheel sensor J1 and the wheel sensor J2;

[0025] A spare section 1G' formed by the wheel sensor J1' and the wheel sensor J2;

[0026] The main section 2G formed by the wheel sensor J2 and the wheel sensor J3;

[0027] …

[0028] The main section (n-1)G formed by the wheel sensor J(n-1) and the wheel sensor Jn;

[0029] A spare section (n-1)G' formed by the wheel sensor J(n-1) and the wheel sensor Jn';

[0030] The spare section DQG' formed by the wheel sensor J1' and the wheel sensor Jn';

[0031] The main section DQG formed by the wheel sensor J1 and the wheel sensor Jn;

[0032] The auxiliary sections include:

[0033] An auxiliary section 1-2G, an auxiliary section 2-3G, ..., an auxiliary section (n-2)-(n-1)G formed by two adjacent wheel sensors; wherein n≥3;

[0034] Virtual small block sections include:

[0035] Virtual segment 1Gxn, virtual segment 2Gxn, virtual segment 2Gxn', virtual segment 3Gxn, virtual segment 3Gxn', virtual segment 4Gxn, ..., (n-2)Gxn', (n-1)Gxn are virtually obtained based on the auxiliary segment.

[0036] Furthermore, in S3, the axle counting centralized processing unit determines the occupied / idle status of the segment according to the three types of segments, including the following sub-steps:

[0037] A1. The axle counting centralized processing unit receives and processes the train wheel pair information transmitted by the wheel sensor and determines the axle number and the working status of the wheel sensor;

[0038] A2. Judgment of the occupied / idle status of the physical block section and the auxiliary section; when the idle output result of the physical block section is consistent with that of the auxiliary section, the physical block section is used as the final output of occupied / idle;

[0039] A3. When the idle output result of the physical block section is inconsistent with the auxiliary section or the physical block section has been cut off, the virtual section output is virtualized through the auxiliary section as the final output of occupied / idle.

[0040] Furthermore, in A2, the determination of the occupied / idle status of the physical block section and the auxiliary section includes the following sub-steps:

[0041] A21, judging the occupancy / idleness of the main segment 2G, the main segment 3G, ..., (n-2)G, and temporarily storing the occupancy / idleness of the main segment 2G, the main segment 3G, ..., (n-2)G after the judgment;

[0042] A22, judging the occupancy / idleness of the main segment 1G, the main segment (n-1)G, and the main segment DQG, and judging the occupancy / idleness of the standby segment 1G', the standby segment (n-1)G', and the standby segment DQG'; then comparing the judgment results of the main segment and the standby segment, if the comparison results are consistent, the output of the main segment is used as the final output;

[0043] If the comparison results are inconsistent, the fault-free and idle section among the main section and the standby section is used as the final section output;

[0044] The faulty section is cut off and the fault alarm information is transmitted to the centralized monitoring equipment to notify the maintenance personnel to repair the equipment until the fault is repaired and reset before returning to normal working state;

[0045] A23. When the main wheel sensor works normally, the main wheel sensor and the main section judgment result are output to the interlocking device as the final section occupied / idle signal;

[0046] When the main wheel sensor fails or an erroneous axle counting occurs, the main wheel sensor and the main section judgment result are no longer accepted and are cut off from use. At the same time, the standby wheel sensor and the standby section judgment result are used as the final section occupied / idle signal to be output to the interlocking device;

[0047] A24. When the main or spare wheel sensor fails or an erroneous axle counting occurs, the fault information is transmitted to the centralized monitoring equipment through a fault alarm to notify the maintenance personnel to handle it in time;

[0048] A25, if the output state is the main section, the main wheel sensor is used as the sensor for subsequent auxiliary section occupation / idle judgment;

[0049] If the output state is a spare section, the spare wheel sensor is used as a sensor for subsequent auxiliary section occupancy / idleness judgment;

[0050] A26. Make auxiliary section occupied / idle judgment and record occupied / idle status and driving direction information.

[0051] Furthermore, in A26, when the physical block section fails, the auxiliary section is used to virtually create a virtual small block section to perform the final section occupation / idle state control, specifically:

[0052] A261, auxiliary section 1-2G has occupied / idle status change. If the main section 1G and main section 2G were not cut off due to fault in the last occupied / idle status change, it is determined whether the wheel sensor J2 point has fault. If the wheel sensor J2 has fault, the output control of the main section 1G and main section 2G is cut off.

[0053] If the auxiliary section 1-2G is idle, and the number of remaining axles in the main section 1G and the main section 2G exceeds ±1 axle, and if the wheel sensor J2 point is abnormal, the output control of the main section 1G and the main section 2G will be cut off. Before the fault is repaired and the reset operation is performed, it shall not enter the normal working state, and it is prohibited to be used for section occupation / idle judgment. At this time, the occupation / idle status of the virtual section 1Gxn and the virtual section 2Gxn virtualized by the auxiliary section 1-2G is used as the final output;

[0054] A262, if the auxiliary segment 1-2G is idle, and the number of remaining axes of the main segment 1G and the main segment 2G is ±1 axis, the judgment authority of the main segment 1G and the main segment 2G is not removed at this time, and the ±1 axis interference is cleared after a delay, but the main segment 1G and the main segment 2G are not used as the judgment basis in this round of judgment, and the occupation / idle status of the virtual segment 1Gxn and the virtual segment 2Gxn is determined through the auxiliary segment 1-2G as the final output;

[0055] A263, determination of virtual segment idle to occupied;

[0056] A264, judgment of whether a virtual segment is occupied or free.

[0057] Furthermore, in A263, the determination of whether the virtual segment is idle or occupied is as follows:

[0058] Auxiliary section 1-2G changes from idle to occupied. If the wheel sensor J1 point drives forward and causes the auxiliary section 1-2G to change from idle to occupied, the virtual section 1Gxn that passes first in the forward direction will immediately output occupied; at the same time, a delay is performed, and the virtual section 2Gxn that passes later in the forward direction will be occupied after the delay time.

[0059] If the wheel sensor J2 point drives in the reverse direction and causes the auxiliary section 1-2G to change from idle to occupied, the virtual section 2Gxn that passes first in the reverse direction will output occupied; at the same time, a delay is performed, and the virtual section 1Gxn that passes later in the reverse direction will be occupied after the delay time.

[0060] Furthermore, in the A264, the determination of whether the virtual segment is occupied or idle is as follows:

[0061] Auxiliary section 1-2G changes from occupied to idle. If the wheel sensor J2 point clears the section in the forward direction, causing the auxiliary section 1-2G to change from occupied to idle, the virtual section 1Gxn that passes first in the forward direction will immediately output idle; at the same time, a delay is performed, and the virtual section 2Gxn that passes later in the forward direction will become idle after the delay time.

[0062] If the wheel sensor J1 point reverses the driving to clear the section and causes the auxiliary section 1-2G to change from occupied to idle, the virtual section 2Gxn that passes first in the reverse direction will immediately output idle; at the same time, a delay is performed, and the virtual section 1Gxn that passes later in the reverse direction will become idle after the delay time.

[0063] Furthermore, in S4, the auxiliary control of resetting other main segments and spare segments by using the main segment DQG and the spare segment DQG' includes:

[0064] When the main segment DQG or the standby segment DQG' is in the idle state, the reset of other main segments and standby segments is operated, and the other main segments and standby segments after the reset operation are in the direct reset state, and the output segment is in the idle state;

[0065] When the main section DQG or the standby section DQG' is in the occupied state, the reset of other main sections and standby sections is operated. After the reset operation, other main sections and standby sections are in the pre-reset state. The section output is occupied. It can be in the idle state only after a train has passed completely.

[0066] After the other active segments and standby segments are reset to idle, the associated auxiliary segments and virtual segments will be reset to idle status synchronously.

[0067] The N+2 logic configuration redundant axle counting automatic blocking system and method provided by the present invention have the following beneficial effects:

[0068] The present invention, through the combination of physical block sections, auxiliary sections and virtual small block sections, creatively proposes that when only two sensors are added to the hardware, the logic processing algorithm is cleverly used to achieve the normal operation of the axle counting system after any single sensor (including sensor signal transmission cable and indoor evaluation board) fails. Two new sensors are installed at the station entrance signal on the existing line, and the existing spare core wires are available. The redundancy problem of the axle counting automatic block system can be solved by adding only two sensors and two groups of cable core wires (the hardware redundancy configuration of the indoor axle counting equipment is not within the scope of the patent of the present invention), which not only meets the construction of new projects but also solves the problem of reconstruction of existing lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] Figure 1 This is a schematic diagram of the existing axle counting automatic blocking system.

[0070] Figure 2 The present invention is a schematic diagram of the structure of an N+2 logic configuration type redundant axle counting automatic blocking system.

[0071] Figure 3 A schematic diagram of various types of section combinations of a typical 5-point axle counting automatic blocking system provided by the present invention.

[0072] Figure 4 This is a flow chart of the method provided in Example 2 of the present invention.

[0073] Figure 5 This is the overall processing flow of the axle counting centralized processing unit provided in Example 2 of the present invention.

[0074] Figure 6 The entity and auxiliary segment processing logic provided for embodiment 2 of the present invention.

[0075] Figure 7 The virtual cell segment processing logic provided in Example 2 of the present invention - taking 1G and 2G as examples.

[0076] Figure 8 The cell segment reset processing logic provided in Example 2 of the present invention - taking 1G and 2G as examples. DETAILED DESCRIPTION

[0077] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0078] Example 1

[0079] This embodiment provides an N+2 logical configuration redundant axle counting automatic blocking system, referring to Figure 2 , which specifically include:

[0080] Wheel sensor: uses active electromagnetic sensor technology to collect information about the wheelset of a passing train and transmits the information to the evaluation board for subsequent signal evaluation and the axle counting centralized processing unit to determine whether the train is occupied or idle in the section;

[0081] Because there is only one adjacent axle counting point at the two station ends of the outdoor automatic block section, and there are no two adjacent axle counting points, it is impossible to provide fault redundancy for the axle counting point sensor through the auxiliary section; based on this, this embodiment adds one spare wheel sensor J1', Jn' at each of the two station ends, and the use of N+2 sensors can achieve redundancy for single failures of all sensors.

[0082] Evaluation board: used to evaluate the train wheel pair information of analog signal, convert the evaluated analog signal train wheel pair information into digital signal and transmit it to the axle counting centralized processing unit, and the transmission mode adopts bus mode or contact mode;

[0083] Axle counting centralized processing unit: used to identify the direction of the train according to the train wheel pair information, determine the direction information of the train passing through the sensor in the forward or reverse direction, and the net number of axles of the train entering or leaving the section, so as to determine the occupied / idle status of the section, and transmit the occupied / idle status information of the section to the interlocking device; at the same time, when the equipment is put into use for the first time or after the fault is repaired, the reset information of the interlocking device is received, and the axle counting device re-enters the normal working state. This unit also needs to transmit the working status information of the equipment to the centralized monitoring device, and view the working status information of the axle counting equipment in real time and playback;

[0084] Specifically, the axle counting centralized processing unit of this embodiment can realize the single sensor failure redundancy function by combining the physical block section, the auxiliary section, and the virtual small block section by using the N+2 wheel sensor settings; at the same time, through the setting of the section DQG (DQG'), the direct reset function of other main sections and spare sections is realized. When there are multiple point failures in the small block section, as long as one of the sensors at both ends is normal, the single-line automatic block section can be downgraded to the automatic station-to-station block function, and the section can still operate one train normally; the judgment of the section occupation / idle status is transmitted to the interlocking device.

[0085] In this embodiment, N+2 wheel sensors are configured to form three types of sections, as follows:

[0086] Physical occlusion sections include:

[0087] The main section 1G formed by the wheel sensor J1 and the wheel sensor J2;

[0088] A spare section 1G' formed by the wheel sensor J1' and the wheel sensor J2;

[0089] The main section 2G formed by the wheel sensor J2 and the wheel sensor J3;

[0090] …

[0091] The main section (n-1)G formed by the wheel sensor J(n-1) and the wheel sensor Jn;

[0092] A spare section (n-1)G' formed by the wheel sensor J(n-1) and the wheel sensor Jn';

[0093] The spare section DQG' formed by the wheel sensor J1' and the wheel sensor Jn';

[0094] The main section DQG formed by the wheel sensor J1 and the wheel sensor Jn;

[0095] The auxiliary sections include:

[0096] An auxiliary section 1-2G, an auxiliary section 2-3G, ..., an auxiliary section (n-2)-(n-1)G formed by two adjacent wheel sensors; wherein n≥3;

[0097] Virtual small block sections include:

[0098] Virtual segment 1Gxn, virtual segment 2Gxn, virtual segment 2Gxn', virtual segment 3Gxn, virtual segment 3Gxn', virtual segment 4Gxn, ..., (n-2)Gxn', (n-1)Gxn are virtually obtained based on the auxiliary segment.

[0099] Interlocking device: used to collect the section occupancy / idleness information output by the axle counting device, providing a basis for subsequent driving. At the same time, when the axle counting device is put into use for the first time or after the fault is repaired, it provides a reset signal for the axle counting device;

[0100] Centralized monitoring equipment: used to store, display and replay the working status information of the axle counting equipment. When the axle counting equipment has a fault or an early warning, the alarm information is output in time to prompt the maintenance personnel to repair the axle counting equipment. At the same time, the working status and fault playback analysis can be carried out to provide an accurate basis for the maintenance personnel to view and analyze the working status and faults of the axle counting equipment.

[0101] As a preferred example of this embodiment, N=5 is selected for description. Figure 3 , one spare wheel sensor J1', J5' is added to each of the two station ends to form redundant sections 1G', 4G' with adjacent points, and J1', J5' form DQG', specifically:

[0102] For the wheel sensors J1 and J5 at the end points of the two stations, since there are no two points to form an auxiliary section to manage them, it is necessary to add two spare wheel sensors (redundant sensors) J1' and J5' on the other rail at the coordinates of the wheel sensors J1 and J5;

[0103] Based on this, the three types of segments in this embodiment are specifically:

[0104] Physical occlusion section:

[0105] The wheel sensor J1, the wheel sensor J1' and the wheel sensor J2 constitute 1G and 1G' respectively;

[0106] Specifically, the main wheel sensor J1 and the wheel sensor J2 constitute the main section 1G; the spare wheel sensor J1' and the wheel sensor J2 constitute the spare section 1G';

[0107] Similarly, the wheel sensor J2 and the wheel sensor J3 form the main section 2G;

[0108] The main section 3G formed by the wheel sensor J3 and the wheel sensor J4;

[0109] Wheel sensor J5 and wheel sensor J4 form the main section 4G;

[0110] The spare wheel sensor J5' and the wheel sensor J4 form a spare section 4G';

[0111] A spare section DQG' formed by the spare wheel sensor J1' and the wheel sensor Jn';

[0112] The main wheel sensor J1 and the wheel sensor Jn constitute a main section DQG.

[0113] Auxiliary section:

[0114] Auxiliary sections 1-2G, 2-3G, and 3-4G formed by two adjacent wheel sensors;

[0115] Virtual small block section:

[0116] The virtual segments 1Gxn, 2Gxn, 2Gxn', 3Gxn, 3Gxn' and 4Gxn are virtualized from the auxiliary segments.

[0117] Based on the above three types of section divisions, this embodiment realizes the sensor redundancy function of the main sections 1G and 4G of the two end heads and the main section (large section) DQG by adding two wheel sensors, as follows:

[0118] When the main wheel sensor works normally, the main wheel sensor and the main section judgment result are output to the interlocking device as the final section occupied / idle signal; when the main wheel sensor fails or an erroneous axle count occurs, the main wheel sensor and the main section judgment result are no longer trusted and are cut off, and at the same time, the standby sensor and the standby section judgment result are output to the interlocking device as the final section occupied / idle signal;

[0119] When the main (or spare) wheel sensor fails or an axle counting error occurs, the fault information should be transmitted to the centralized monitoring system via a fault alarm to notify maintenance personnel to handle it in a timely manner to avoid a secondary fault occurring after the spare (or main) sensor also fails and the first fault is not repaired, resulting in the axle counting automatic blocking system being unusable and affecting driving problems.

[0120] For ease of description, in this embodiment 1, the main segment DQG and the backup segment DQG' are briefly described as large segment DQG' and large segment DQG; other main segments and backup segments except the main segment DQG and the backup segment DQG' are briefly described as small segments.

[0121] The control effect of the large segment DQG and DQG' on the small segment reset is as follows:

[0122] When the large segment DQG or the large segment DQG' is in the idle state, the small segment is reset at this time. After the reset operation, the small segment is in the direct reset state and the segment idle output is directly given.

[0123] When the large section DQG or large section DQG' is in the occupied state, the small section is reset at this time. After the reset operation, the small section is in the pre-reset state. The section output is occupied and it can be in the idle state only after one train has passed completely.

[0124] This embodiment effectively utilizes the occupied / idle state of a large section to realize automatic selection of a small section reset mode. While fully ensuring system security, it greatly improves the availability of the equipment and reduces the workload and difficulty of manually confirming whether there is a vehicle in the section during reset.

[0125] The present invention only adds two sensors to the hardware. Through the combination of the physical block section, the auxiliary section and the virtual small block section, it can be achieved that after any single sensor (including the sensor signal transmission cable and the indoor evaluation board) fails, the axle counting equipment can work normally. With a small increase in cost and no increase in construction difficulty, it not only meets the construction of new projects but also solves the problem of reconstruction of existing lines.

[0126] Example 2

[0127] This embodiment is based on the system in Embodiment 1, and provides an N+2 logic configuration redundant axle counting automatic blocking method. In the case of adding only two sensors to the hardware, a logical algorithm method using auxiliary sections and virtual sections is creatively proposed to achieve a technical solution that the axle counting system can work normally after any single sensor fails. Figure 4 , which specifically includes the following:

[0128] Step S1: N main wheel sensors are arranged at the block division points of the outdoor automatic block section, and one spare wheel sensor J1' and Jn' are respectively arranged at the two station ends of the outdoor automatic block section, that is, at the positions of the wheel sensors J1 and Jn, so that a total of N+2 wheel sensors are arranged;

[0129] Step S2, the axle counting centralized processing unit configures N+2 wheel sensors to form three types of sections;

[0130] refer to Figure 3 In this embodiment, three types of segments are further described with N=5. Based on this, the three types of segments in this embodiment include:

[0131] Physical block sections: main section 1G, backup section 1G', main section 2G, main section 3G, main section 4G, backup section 4G', main section DQG, backup section DQG';

[0132] Auxiliary sections: Auxiliary section 1-2G, Auxiliary section 2-3G, Auxiliary section 3-4G;

[0133] Virtual small block sections: virtual section 1Gxn, virtual section 2Gxn, virtual section 2Gxn', virtual section 3Gxn, virtual section 3Gxn', virtual section 4Gxn.

[0134] Since the specific partitioning process of the three types of segments has been described in Example 1, it will not be repeated in this Example 2.

[0135] Step S3, the axle counting centralized processing unit determines the occupied / idle status of the segment according to the three types of segments;

[0136] Specifically, the axle counting centralized processing unit of this embodiment determines whether the output state of the final output small block section is output as a physical small block section state or a virtual small block section state by judging the physical block section and the auxiliary section;

[0137] For the two-station end axle counting points with sensor physical redundancy settings, the output status is determined by logic to be the main section output or the backup section output.

[0138] Step S4, the axle counting centralized processing unit transmits the section status information to the interlocking device; when the axle counting device is reset, the interlocking device transmits a reset signal to the axle counting centralized processing unit; the axle counting centralized processing unit transmits the equipment working status information to the centralized monitoring device.

[0139] The overall process of the axle counting centralized processing unit in this embodiment, that is, the segment occupation / idle status judgment is performed according to the three types of segments in S3 of this embodiment, refer to Figure 5 , including the following sub-steps:

[0140] Step A1, the axle counting centralized processing unit receives and processes the train wheel pair information transmitted by the wheel sensor and determines the axle number and the working state of the wheel sensor;

[0141] Step A2, judging the occupied / idle status of the physical block section and the auxiliary section; when the idle output result of the physical block section is consistent with that of the auxiliary section, the physical block section is used as the final output of occupied / idle;

[0142] Step A3: When the idle output result of the physical block section is inconsistent with the auxiliary section or the physical block section has been cut off, the virtual section output is virtualized through the auxiliary section as the final output of occupied / idle.

[0143] In step A2, the physical block section and the auxiliary section occupied / idle status judgment logic first determines whether the main physical unit and the backup physical unit are consistent and whether there is a fault, such as Figure 3 and Figure 6 As shown, it specifically includes the following steps:

[0144] Step A21, judging the occupancy / idleness of the main segment 2G and the main segment 3G of only the main entity, and temporarily storing the occupancy / idleness of the main segment 2G and the main segment 3G after the judgment, for subsequent comparison with the auxiliary segment, and then performing the final output state control;

[0145] Step A22, judging the occupancy / idleness of the main segment 1G, the main segment 4G, and the main segment DQG having the backup entity segment, and judging the occupancy / idleness of the backup segment 1G', the backup segment 4G', and the backup segment DQG'; then comparing the judgment results of the main segment and the backup segment, if the comparison results are consistent, adopting the output of the main segment as the final output;

[0146] If the comparison results are inconsistent, the fault-free and idle section among the main section and the standby section is used as the final section output;

[0147] The faulty section is cut off and the fault alarm information is transmitted to the centralized monitoring equipment to notify the maintenance personnel to repair the equipment until the fault is repaired and reset before returning to normal working state;

[0148] Step A23: when the main wheel sensor works normally, the main wheel sensor and the main section judgment result are output to the interlocking device as the final section occupied / idle signal;

[0149] When the main wheel sensor fails or an erroneous axle counting occurs, the main wheel sensor and the main section judgment result are no longer accepted and are cut off from use. At the same time, the standby wheel sensor and the standby section judgment result are used as the final section occupied / idle signal to be output to the interlocking device;

[0150] Step A24, when the main or spare wheel sensor fails or an erroneous axle counting occurs, the fault information is transmitted to the centralized monitoring device through a fault alarm, and the maintenance personnel are notified to handle it in time, so as to avoid the backup (or main) wheel sensor also failing. When the first fault is not repaired, a secondary fault occurs, which causes the axle counting automatic blocking system to be unusable, affecting driving problems;

[0151] Step A25: If the output state is the main section, the main wheel sensor is used as a sensor for subsequent auxiliary section occupation / idleness judgment;

[0152] If the output state is a spare section, the spare wheel sensor is used as a sensor for subsequent auxiliary section occupancy / idleness judgment;

[0153] Step A26: Make an auxiliary section occupied / idle judgment, record the occupied / idle status and driving direction information, and prepare for whether to use the virtual section later.

[0154] In this embodiment, the idle output result of the physical block section is consistent with that of the auxiliary section, which means that when the auxiliary section is idle, the two associated physical block sections must both be in an idle state, such as Figure 3 When the auxiliary segment 1-2G is idle, the main segment 1G (or the standby segment 1G') and the auxiliary segment 2G must both be in the idle state to be consistent, otherwise they are inconsistent.

[0155] refer to Figure 7 , further description of step A26, when the physical block section fails, the auxiliary section needs to be used to virtualize the virtual small block section for the final section occupation / idle state control. The virtual sections 1Gxn, 2Gxn, 2Gxn', 3Gxn, 3Gxn', 4Gxn virtualized by the auxiliary section are enabled only when the idle state of the auxiliary section is inconsistent with the corresponding physical section, such as Figure 3 Take the main segments 1G, 2G and the associated auxiliary segments 1-2G in the example for illustration (assuming that the main sensor J1 is normal). The specific processing method for the virtual small segment is as follows:

[0156] Step A261: The auxiliary section 1-2G has an occupied / idle state change. If the main section 1G and the main section 2G have not been cut off due to a fault in the last occupied / idle state change, it is necessary to determine whether the wheel sensor J2 point has a fault. If the wheel sensor J2 has a fault, the output control of the main section 1G and the main section 2G is cut off.

[0157] If the auxiliary section 1-2G is idle, and the number of remaining axles in the main section 1G and the main section 2G exceeds ±1 axle, and if the wheel sensor J2 point is abnormal, the output control of the main section 1G and the main section 2G will be cut off. Before the fault is repaired and the reset operation is performed, it shall not enter the normal working state, and it is prohibited to be used for section occupation / idle judgment. At this time, the occupation / idle status of the virtual section 1Gxn and the virtual section 2Gxn virtualized by the auxiliary section 1-2G is used as the final output;

[0158] Step A262: If the auxiliary segment 1-2G is idle, and the number of remaining axes of the main segment 1G and the main segment 2G is ±1 axis, the judgment authority of the main segment 1G and the main segment 2G is not removed at this time, and the ±1 axis interference is cleared after a delay. However, the main segment 1G and the main segment 2G are not used as the judgment basis in this round of judgment, and the occupation / idle status of the virtual segment 1Gxn and the virtual segment 2Gxn is determined as the final output through the auxiliary segment 1-2G;

[0159] Step A263, judging whether the virtual segment is idle or occupied;

[0160] Auxiliary section 1-2G changes from idle to occupied. At this time, direction judgment is required. If the wheel sensor J1 point is driving in the forward direction, causing the auxiliary section 1-2G to change from idle to occupied, the virtual section 1Gxn that passes first in the forward direction will immediately output occupied; at the same time, a delay is performed, and the virtual section 2Gxn that passes later in the forward direction will be occupied after the delay time.

[0161] If the wheel sensor J2 point drives in the reverse direction and the auxiliary section 1-2G changes from idle to occupied, the virtual section 2Gxn that passes in the reverse direction first will output occupied; at the same time, a delay is performed, and the virtual section 1Gxn that passes in the reverse direction later will be occupied after the delay time.

[0162] Step A264, judging whether the virtual segment is occupied or idle;

[0163] Auxiliary section 1-2G changes from occupied to idle. At this time, direction judgment is required. If the wheel sensor J2 point clears the section in the forward direction, causing the auxiliary section 1-2G to change from occupied to idle, the virtual section 1Gxn that passes first in the forward direction will immediately output idle; at the same time, a delay is performed, and the virtual section 2Gxn that passes later in the forward direction will become idle after the delay time.

[0164] If the wheel sensor J1 point drives in the reverse direction to clear the section, causing the auxiliary section 1-2G to change from occupied to idle, the virtual section 2Gxn that passes first in the reverse direction will immediately output idle; at the same time, a delay will be performed, and the virtual section 1Gxn that passes later in the reverse direction will become idle after the delay time; the specific delay time can be configured according to the section length and the combined vehicle speed.

[0165] refer to Figure 8 In step S4, the main segment DQG and the backup segment DQG' are used to perform auxiliary control to reset other main segments and backup segments. For the convenience of description, the main segment DQG and the backup segment DQG' are briefly described as large segments DQG' and large segments DQG; other main segments and backup segments except the main segment DQG and the backup segment DQG' are briefly described as small segments, which specifically include:

[0166] When the main segment DQG or the standby segment DQG' is in the idle state, the reset of other main segments and standby segments is operated, and the other main segments and standby segments after the reset operation are in the direct reset state, and the output segment is in the idle state;

[0167] When the main section DQG or the standby section DQG' is in the occupied state, the reset of other main sections and standby sections is operated. After the reset operation, other main sections and standby sections are in the pre-reset state. The section output is occupied. It can be in the idle state only after a train has passed completely.

[0168] After the other active segments and standby segments are reset to idle, the associated auxiliary segments and virtual segments will be reset to idle status synchronously.

[0169] Although the specific implementation of the invention is described in detail in conjunction with the drawings, it should not be understood as limiting the scope of protection of this patent. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still fall within the scope of protection of this patent.

Claims

1. An N+2 logical configuration redundant axle counting automatic blocking system, characterized in that: include: Wheel sensor: used to collect the wheel set information of the passing train and transmit the train wheel set information to the evaluation board; Evaluation board: used for evaluating the train wheel set information, converting the evaluated train wheel set information into digital signals and transmitting them to the axle counting centralized processing unit; Axle counting centralized processing unit: used to determine the occupied / idle status of the section according to the train wheel set information, and transmit the occupied / idle status information of the section to the interlocking equipment; and, receiving a reset signal from the interlocking device when the axle counting device is put into use for the first time or after a fault is repaired; and, transmitting the working status information of the axle counting equipment to the centralized monitoring equipment; Interlocking equipment: used to receive the section occupied / idle status information, providing a basis for subsequent driving; and, providing a reset signal to the axle counting device when the axle counting device is put into use for the first time or after a fault is repaired; Centralized monitoring equipment: used to store, display and playback the working status information of the axle counting equipment.

2. A method of the N+2 logic configuration redundant axle counting automatic blocking system according to claim 1, characterized in that: The following steps are involved: S1, N main wheel sensors are arranged at the block division points of the outdoor automatic block section, and one spare wheel sensor J1' and Jn' are respectively arranged at the two station ends of the outdoor automatic block section, that is, at the positions of the wheel sensors J1 and Jn, and a total of N+2 wheel sensors are arranged; S2, the axle counting centralized processing unit configures N+2 wheel sensors to form three types of sections; S3, the axle counting centralized processing unit determines the occupied / idle status of the segment according to the three types of segments; S4. The axle counting centralized processing unit transmits the section status information to the interlocking device; when the axle counting device is reset, the interlocking device transmits the reset signal to the axle counting centralized processing unit; the axle counting centralized processing unit transmits the equipment working status information to the centralized monitoring device.

3. The method of the N+2 logical configuration redundant axle counting automatic blocking system according to claim 2, characterized in that: In said S2, the three types of segments are: physical segment, auxiliary segment and virtual segment; The physical occlusion sections include: The main section 1G formed by the wheel sensor J1 and the wheel sensor J2; A spare section 1G' formed by the wheel sensor J1' and the wheel sensor J2; The main section 2G formed by the wheel sensor J2 and the wheel sensor J3; … The main section (n-1)G formed by the wheel sensor J(n-1) and the wheel sensor Jn; A spare section (n-1)G' formed by the wheel sensor J(n-1) and the wheel sensor Jn'; The spare section DQG' formed by the wheel sensor J1' and the wheel sensor Jn'; The main section DQG formed by the wheel sensor J1 and the wheel sensor Jn; The auxiliary sections include: An auxiliary section 1-2G, an auxiliary section 2-3G, ..., an auxiliary section (n-2)-(n-1)G formed by two adjacent wheel sensors; wherein n≥3; Virtual small block sections include: Virtual segment 1Gxn, virtual segment 2Gxn, virtual segment 2Gxn', virtual segment 3Gxn, virtual segment 3Gxn', virtual segment 4Gxn, ..., (n-2)Gxn', (n-1)Gxn are virtually obtained based on the auxiliary segment.

4. The method of the N+2 logic configuration redundant axle counting automatic blocking system according to claim 3 is characterized in that: In S3, the axle counting centralized processing unit determines the occupied / idle status of the segment according to the three types of segments, including the following sub-steps: A1. The axle counting centralized processing unit receives and processes the train wheel pair information transmitted by the wheel sensor and determines the axle number and the working status of the wheel sensor; A2. Judgment of the occupied / idle status of the physical block section and the auxiliary section; when the idle output result of the physical block section is consistent with that of the auxiliary section, the physical block section is used as the final output of occupied / idle; A3. When the idle output result of the physical block section is inconsistent with the auxiliary section or the physical block section has been cut off, the virtual section output is virtualized through the auxiliary section as the final output of occupied / idle.

5. The method of the N+2 logic configuration redundant axle counting automatic blocking system according to claim 4 is characterized in that: In A2, the determination of the occupied / idle status of the physical block section and the auxiliary section includes the following sub-steps: A21, judging the occupancy / idleness of the main segment 2G, the main segment 3G, ..., (n-2)G, and temporarily storing the occupancy / idleness of the main segment 2G, the main segment 3G, ..., (n-2)G after the judgment; A22, judging the occupancy / idleness of the main segment 1G, the main segment (n-1)G, and the main segment DQG, and judging the occupancy / idleness of the standby segment 1G', the standby segment (n-1)G', and the standby segment DQG'; then comparing the judgment results of the main segment and the standby segment, if the comparison results are consistent, the output of the main segment is used as the final output; If the comparison results are inconsistent, the fault-free and idle section among the main section and the standby section is used as the final section output; The faulty section is cut off and the fault alarm information is transmitted to the centralized monitoring equipment to notify the maintenance personnel to repair the equipment until the fault is repaired and reset before returning to normal working state; A23. When the main wheel sensor works normally, the main wheel sensor and the main section judgment result are output to the interlocking device as the final section occupied / idle signal; When the main wheel sensor fails or an erroneous axle counting occurs, the main wheel sensor and the main section judgment result are no longer accepted and are cut off from use. At the same time, the standby wheel sensor and the standby section judgment result are used as the final section occupied / idle signal to be output to the interlocking device; A24. When the main or spare wheel sensor fails or an erroneous axle counting occurs, the fault information is transmitted to the centralized monitoring equipment through a fault alarm to notify the maintenance personnel to handle it in time; A25, if the output state is the main section, the main wheel sensor is used as the sensor for subsequent auxiliary section occupation / idle judgment; If the output state is a spare section, the spare wheel sensor is used as a sensor for subsequent auxiliary section occupancy / idleness judgment; A26. Make auxiliary section occupied / idle judgment and record occupied / idle status and driving direction information.

6. The method of the N+2 logic configuration redundant axle counting automatic blocking system according to claim 5, characterized in that: In A26, when the physical block section fails, the auxiliary section is used to virtualize the virtual small block section to perform the final section occupation / idle state control, specifically: A261, auxiliary section 1-2G has occupied / idle status change. If the main section 1G and main section 2G were not cut off due to fault in the last occupied / idle status change, it is determined whether the wheel sensor J2 point has fault. If the wheel sensor J2 has fault, the output control of the main section 1G and main section 2G is cut off. If the auxiliary section 1-2G is idle, and the number of remaining axles in the main section 1G and the main section 2G exceeds ±1 axle, and if the wheel sensor J2 point is abnormal, the output control of the main section 1G and the main section 2G will be cut off. Before the fault is repaired and the reset operation is performed, it shall not enter the normal working state, and it is prohibited to be used for section occupation / idle judgment. At this time, the occupation / idle status of the virtual section 1Gxn and the virtual section 2Gxn virtualized by the auxiliary section 1-2G is used as the final output; A262, if the auxiliary segment 1-2G is idle, and the number of remaining axes of the main segment 1G and the main segment 2G is ±1 axis, the judgment authority of the main segment 1G and the main segment 2G is not removed at this time, and the ±1 axis interference is cleared after a delay, but the main segment 1G and the main segment 2G are not used as the judgment basis in this round of judgment, and the occupation / idle status of the virtual segment 1Gxn and the virtual segment 2Gxn is determined through the auxiliary segment 1-2G as the final output; A263, determination of virtual segment idle to occupied; A264, judgment of whether a virtual segment is occupied or free.

7. The method of the N+2 logic configuration redundant axle counting automatic blocking system according to claim 6, characterized in that: In A263, the determination of whether the virtual segment is idle or occupied is as follows: Auxiliary section 1-2G changes from idle to occupied. If the wheel sensor J1 point drives forward and causes the auxiliary section 1-2G to change from idle to occupied, the virtual section 1Gxn that passes first in the forward direction will immediately output occupied; at the same time, a delay is performed, and the virtual section 2Gxn that passes later in the forward direction will be occupied after the delay time. If the wheel sensor J2 point drives in the reverse direction and causes the auxiliary section 1-2G to change from idle to occupied, the virtual section 2Gxn that passes first in the reverse direction will output occupied; at the same time, a delay is performed, and the virtual section 1Gxn that passes later in the reverse direction will be occupied after the delay time.

8. The method of the N+2 logic configuration redundant axle counting automatic blocking system according to claim 6, characterized in that: In the A264, the determination of whether a virtual segment is occupied or idle is as follows: Auxiliary section 1-2G changes from occupied to idle. If the wheel sensor J2 point clears the section in the forward direction, causing the auxiliary section 1-2G to change from occupied to idle, the virtual section 1Gxn that passes first in the forward direction will immediately output idle; at the same time, a delay is performed, and the virtual section 2Gxn that passes later in the forward direction will become idle after the delay time. If the wheel sensor J1 point reverses the driving to clear the section and causes the auxiliary section 1-2G to change from occupied to idle, the virtual section 2Gxn that passes first in the reverse direction will immediately output idle; at the same time, a delay is performed, and the virtual section 1Gxn that passes later in the reverse direction will become idle after the delay time.

9. The method of the N+2 logic configuration redundant axle counting automatic blocking system according to claim 2, characterized in that: In S4, auxiliary control of resetting other main segments and spare segments by using the main segment DQG and the spare segment DQG' includes: When the main segment DQG or the standby segment DQG' is in the idle state, the reset of other main segments and standby segments is operated, and the other main segments and standby segments after the reset operation are in the direct reset state, and the output segment is in the idle state; When the main section DQG or the standby section DQG' is in the occupied state, the reset of other main sections and standby sections is operated. After the reset operation, other main sections and standby sections are in the pre-reset state. The section output is occupied. It can be in the idle state only after a train has passed completely. After the other active segments and standby segments are reset to idle, the associated auxiliary segments and virtual segments will be reset to idle status synchronously.

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