Method for determining whether a computer interlocking device matches a train maximum allowable speed

Abstract

The application discloses a method for judging whether a computer interlocking device matches a highest allowable speed of a train or not, and whether the computer interlocking device can satisfy normal unlocking of a route when the train runs at the highest allowable speed; and the condition for the normal unlocking of the route is that the computer interlocking device detects an occupancy state of a current track section first, then detects an occupancy state of a next track section, and finally detects a clearance state of the current track section. The method solves the problem that the performance setting of the computer interlocking device, the train length matched with the computer interlocking device and the length of a track section in a station should satisfy the requirements when the train runs at the highest allowable speed, and provides technical support for new product research and development and project implementation of the computer interlocking device.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication signal technology of national railway and rail transit, and particularly relates to a method for judging whether a computer interlocking device matches a maximum allowable speed of a train. BACKGROUND

[0002] The computer interlocking device has been widely applied to national railway, local railway and urban rail transit in China, and its adaptability to different grades of railway has been fully verified in the field. The computer interlocking device is suitable for high-speed railway with a high-speed operation (350km / h) and an operation interval of 3 minutes, medium-speed railway with a medium-speed operation (160km / h) and an operation interval of 8 minutes, and low-speed urban rail transit line with a low-speed operation (80km / h) and an operation interval of 1.5 minutes.

[0003] However, the design of the computer interlocking device matching the allowable speed of the train on different lines lacks relevant design methods and verification methods, which hinders the development of new products of the computer interlocking device, and the design requirements of the station track and the train matching the new product also lack corresponding design standards. SUMMARY

[0004] The purpose of the present application is to provide a method for judging whether a computer interlocking device matches a maximum allowable speed of a train, which solves the problem that the performance setting of the computer interlocking device and the requirements that the length of the train and the length of the track section in the station should meet when the train runs at the maximum allowable speed, and provides technical support for the new product development and project implementation of the computer interlocking device.

[0005] In order to achieve the above purpose, the present application provides a method for judging whether a computer interlocking device matches a maximum allowable speed of a train, which judges whether the computer interlocking device can meet the normal unlocking of the route when the train runs at the maximum allowable speed. The condition for the normal unlocking of the route is that the computer interlocking device first detects the occupation state of the track section, then detects the occupation state of the next track section, and finally detects the clearance state of the track section.

[0006] Optionally, when the route is normally unlocked, the computer interlocking device collects the occupation state of the track section before the tail of the train leaves the track section. The distance run by the train at the maximum allowable speed within the detection time of the track occupation state is less than the sum of the minimum length of the track section in the station and the length of the train.

[0007] Optionally, the detection time of the occupation state of the track section includes the response time of the track section to the occupation state and the time for the computer interlocking device to detect the occupation state of the track section.

[0008] Optionally, when the route is unlocked normally, the computer interlocking device first detects the occupancy status of the next track segment and then detects the clearing status of the current track segment; the train length is greater than the distance the train can travel at the maximum permissible speed within the minimum time between the computer interlocking device detecting the occupancy status of the next track segment and detecting the occupancy status of the current track segment.

[0009] Optionally, when the track circuit sends a locomotive signal reflecting the track section occupancy status to the onboard equipment, the minimum length of the track section within the station is the length that the train runs at the maximum permissible speed within the time it takes for the onboard equipment to receive the locomotive signal reflecting the track section occupancy status and respond.

[0010] Optionally, the time for the onboard equipment to receive and respond to the locomotive signal reflecting the occupancy status of the track section includes: the track section's response time to the occupancy status, the time for the track circuit to send the locomotive signal, and the onboard equipment's response time to the locomotive signal.

[0011] Optionally, when applied to high-speed railways, the detection time of the track section occupancy status includes: the response time of the track section to the occupancy status and the time for the computer interlocking equipment to detect the occupancy status of the track section; wherein, the response time of the track section to the occupancy status includes the drop time of the track relay installed in the track section.

[0012] Optionally, the time for the on-board equipment to receive the locomotive signal and respond includes the response time of the on-board equipment to the locomotive signal.

[0013] Optionally, when applied to conventional railways, the interface between the track and the computer interlocking equipment adopts an AC binary two-position relay combination. This AC binary two-position relay combination includes: an AC binary two-position relay, a stepless release relay, and a track transmission relay installed in the same track section; both the AC binary two-position relay and the stepless release relay are track relays; the track transmission relay can control the transmission direction of locomotive signals in coded information form; when the track section is occupied, the AC binary two-position relay and the stepless release relay sequentially drop, while the track transmission relay picks up, sending locomotive signals to the onboard equipment; simultaneously, the computer interlocking equipment detects the dropping status of the stepless release relay.

[0014] The detection time for the track section occupancy status includes: the track section's response time to the occupancy status, and the time T for the computer interlocking equipment to detect the drop state of the stepless release relay. 区段采集-VIIB The response time of the track section to the occupancy status includes the drop time T of the AC binary two-position relay. 70 / 240落下 The drop time T of the stepless slow-release relay H310落下 The detection time T1 for the occupancy status of the track section can be expressed as:

[0015] T1 = T 70 / 240落下 + T H310落下 + T 区段采集-VIIB .

[0016] Optionally, the time for the on-board equipment to receive and respond to the locomotive signal comprises: a response time of the track section to the occupancy state, a time for the track circuit to send the locomotive signal, and a response time T2 of the on-board equipment to the locomotive signal; 机车信号 ; wherein the time for the track circuit to send the locomotive signal comprises: a time T3 for the track relay to be pulled up; GCJ吸起 ; the time T2 for the on-board equipment to receive and respond to the locomotive signal can be represented as:

[0017] T2 = T 70 / 240落下 + T H310落下 + T GCJ吸起 + T 机车信号

[0018] In the formula, T4 is the falling time of the AC binary two-position relay, and T5 is the falling time of the non-polar slow-release relay. 70 / 240落下 H310落下

[0019] Optionally, when the interface between the track and the computer interlocking equipment adopts a microelectronic receiver combination method, the microelectronic receiver combination method comprises: a microelectronic receiver, a non-polar relay, and a track relay installed in the same track section, the microelectronic receiver being capable of detecting the occupancy state of the track section; the non-polar relay being a track relay; and the track relay being capable of controlling the transmission direction of the locomotive signal in the form of coded information; when the track section is in the occupancy state, the microelectronic receiver first detects the occupancy state of the track section, the non-polar relay then detects the occupancy state of the track section and falls, and the track relay is pulled up to send the locomotive signal to the on-board equipment; and the falling state of the non-polar relay is detected by the computer interlocking equipment at the same time;

[0020] The detection time of the occupancy state of the track section comprises: a response time of the track section to the occupancy state, and a time T6 for the computer interlocking equipment to detect the falling state of the non-polar slow-release relay; 区段采集-VIIB ; wherein the response time of the track section to the occupancy state comprises: a detection time T7 of the microelectronic receiver, and a falling time T8 of the non-polar relay; JXW25 1700落下 ; the detection time T1 of the occupancy state of the track section can be represented as:

[0021] T1 = T JXW25 + T 1700落下 + T 区段采集-VIIB .

[0022] ​​​Optionally, the time for the on-board equipment to receive and respond to the locomotive signal includes: the response time of the track section to the occupancy state, the time for the track circuit to send the locomotive signal, and the response time of the on-board equipment to the locomotive signal T 机车信号 ; wherein the time for the track circuit to send the locomotive signal includes: the time for the track relay to be pulled up T GCJ吸起 ; the time T2 for the on-board equipment to receive and respond to the locomotive signal can be represented as:

[0023] T2=T JXW25 +T 1700落下 +T GCJ吸起 +T 机车信号

[0024] wherein T JXW25 is the detection time of the microelectronic receiver, and T 1700落下 is the falling time of the relay.

[0025] Optionally, the application is applied to urban rail transit, and the urban rail transit adopts axle counting track circuit. When an axle counting device and a computer interlocking device are connected in a relay interface mode, the occupancy state of a track section is detected by the axle counting device, and is transmitted to a track relay arranged in the track section, so that the track relay falls; the state of the track relay is collected by a relay collection module of the computer interlocking device, and is transmitted to a regional controller; and the occupancy state of the track section is recorded by the regional controller.

[0026] The detection time of the occupancy state of the track section includes: the response time of the track section to the occupancy state, the time for the computer interlocking device to detect the occupancy state of the track section, and the time for the computer interlocking device to send the occupancy state of the track section to the regional controller; wherein the response time of the track section to the occupancy state includes: the falling time of the track relay T GJ落下 ; the detection time T1 of the occupancy state of the track section can be represented as:

[0027] T1=T GJ落下 +T 区段采集-VIIB

[0028] wherein T 区段采集-VIIB is the time for the computer interlocking device to collect and send the occupancy state of the track section to the regional controller.

[0029] Optionally, the application is applied to urban rail transit, and the urban rail transit adopts axle counting track circuit. When an axle counting device and a computer interlocking device are connected in a network communication mode, the occupancy state of a track section is detected by the axle counting device; the occupancy state of the track sent by the axle counting device is obtained by the computer interlocking device through the network, and is transmitted to a regional controller; and the occupancy state of the track section is recorded by the regional controller.

[0030] The detection time of the track section occupancy state comprises: a response time of the track section to the occupancy state, a time for the computer interlocking device to detect the occupancy state of the track section, and a time for the computer interlocking device to send the occupancy state of the track section to the area controller; wherein the response time of the track section to the occupancy state comprises: a falling time T GJ落下 of the track relay. The detection time T1 of the track section occupancy state can be expressed as:

[0031] T1 = T GJ落下 + T 区段采集-通信接口

[0032] In the formula, T 区段采集-通信接口 is a time for the computer interlocking device to acquire and send the occupancy state of the track section to the area controller through network communication.

[0033] Optionally, the application is applied to urban rail transit, and the urban rail transit adopts a 50Hz phase-sensitive track circuit. When a TCIM full electronic interface is adopted between the 50Hz phase-sensitive track circuit and the computer interlocking device, the computer interlocking device directly acquires the occupancy state of the track section through a track circuit electronic module TCIM.

[0034] The detection time of the track section occupancy state comprises: a time for the computer interlocking device to detect the occupancy state of the track section, and a time for the computer interlocking device to send the occupancy state of the track section to the area controller; and the detection time T1 of the track section occupancy state can be expressed as:

[0035] T1 = T 区段采集-TCIM

[0036] In the formula, T 区段采集-TCIM is a time for the computer interlocking device to acquire and send the occupancy state of the track section to the area controller through the TCIM full electronic interface.

[0037] Optionally, the application is applied to urban rail transit, and the urban rail transit adopts a 50Hz phase-sensitive track circuit. When a binary two-position relay combination is adopted between the 50Hz phase-sensitive track circuit and the computer interlocking device, the binary two-position relay combination comprises: an alternating current binary two-position relay and a stepless relay installed in the same track section, wherein the alternating current binary two-position relay and the stepless relay are track relays and are used for detecting and feeding back the occupancy state of the track; when the track section is in an occupancy state, the alternating current binary two-position relay and the stepless relay fall in turn, and the falling state of the stepless relay is acquired by the computer interlocking device and transmitted to the area controller; and the occupancy state of the track section is recorded by the area controller.

[0038] The detection time for the track section occupancy status includes: the track section's response time to the occupancy status, the time for the computer interlocking equipment to detect the occupancy status of this track section, and the time for the computer interlocking equipment to send the track section occupancy status to the area controller; wherein, the track section's response time to the occupancy status includes: the drop time T of the AC binary two-position relay. 42 / 275落下 The drop time T of the infinite relay 1700落下 The detection time T1 for the occupancy status of the track section can be expressed as:

[0039] T1 = T 42 / 275落下 +T 1700落下 +T 区段采集-VIIB

[0040] In the formula, T 区段采集-VIIB The time for the computer interlocking equipment to collect and send the track section occupancy status to the area controller.

[0041] Optionally, this method is applied to urban rail transit, where the urban rail transit uses a 50Hz phase-sensitive track circuit. When the interface between the 50Hz phase-sensitive track circuit and the computer interlocking equipment uses a microelectronic receiver combination, the microelectronic receiver combination includes: a microelectronic receiver installed in the same track section and a stepless relay; the microelectronic receiver can detect the occupancy status of the track section, and the stepless relay is a track relay; when the track section is occupied, the microelectronic receiver first detects the occupancy status of the track section, and then the stepless relay detects the occupancy status of the track section and drops, and the computer interlocking equipment collects the dropping status of the stepless relay and transmits it to the area controller; the area controller records the occupancy status of the track section;

[0042] The detection time for the track section occupancy status includes: the track section's response time to the occupancy status, the time for the computer interlocking equipment to detect the occupancy status of the track section, and the time for the computer interlocking equipment to send the track section occupancy status to the area controller; wherein, the track section's response time to the occupancy status includes: the time T required for the microelectronic receiver to detect the track section's occupancy status. WXJ50 The time T for the infinite relay to drop 1700落下 The detection time T1 for the occupancy status of the track section can be expressed as:

[0043] T1 = T WXJ50 +T 1700落下 +T 区段采集-VIIB

[0044] In the formula, T 区段采集-VIIB The time for the computer interlocking equipment to collect and send the track section occupancy status to the area controller.

[0045] Compared with the prior art, the technical scheme of the present application has at least the following beneficial effects:

[0046] The present application solves the problem of the requirements that the performance setting of the computer interlocking equipment, the train length matched with the computer interlocking equipment and the length of the track section in the station should meet when the train runs at the highest allowable speed according to the three-point checking method, and can provide the calculation method and checking method of the design standard of the train and station matched with the product in the process of the product design of the computer interlocking equipment, thereby providing technical support for the new product research and development and project implementation of the computer interlocking equipment.

[0047] The present application proposes three calculation methods of the performance design requirements of the computer interlocking equipment for the high-speed railway, the national railway and the urban rail transit respectively according to the existing vehicle control logic of the rail transit, and the requirements of the track section in the station and the train length matched with the computer interlocking equipment. According to the three-point checking method, the acquisition link of the computer interlocking equipment in the interface mode of the different track sections and the computer interlocking equipment is refined, the external parameters such as the track circuit response time, the coded relay action time and the locomotive signal response time are calculated, and the internal parameters such as the time of the track section state acquired by the computer interlocking equipment and the time required for the normal unlocking of the route are extracted, so that the result obtained by the matching method of the computer interlocking equipment of the present application is more accurate.

[0048] For the urban rail transit without the receiver of the locomotive signal on the vehicle, the present application calculates the minimum length of the track section in the station by using the time of the track section occupation state acquired and sent to the regional controller by the computer interlocking equipment according to the design principle of the computer interlocking equipment matched with the train of the national railway, so as to limit the performance of the computer interlocking equipment and the length of the track section in the station. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 It is a schematic diagram of the track section occupation state acquisition of the present application.

[0050] Figure 2 It is a method flowchart of the method for judging whether the computer interlocking equipment is matched with the highest allowable speed of the train applied to the high-speed railway in one embodiment of the present application.

[0051] Figure 3 It is a method flowchart of the method for judging whether the computer interlocking equipment is matched with the highest allowable speed of the train applied to the national railway in another embodiment of the present application.

[0052] Figure 4 It is a method flowchart of the method for judging whether the computer interlocking equipment is matched with the highest allowable speed of the train applied to the urban rail transit in a third embodiment of the present application. DETAILED DESCRIPTION

[0053] The technical solutions of the present application will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0054] In the description of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0055] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] The track section state acquisition of the computer interlocking device, when the track section is in an idle state, the track relay (GJ) is pulled up, that is, the track circuit detects the idle state of the track section; when the track section is in an occupied state, the track relay is pulled down, that is, the track circuit detects the occupied state of the track section. The computer interlocking device can acquire the state of the track relay, and further determine whether the track section is occupied. For the track circuit, a signal machine is provided beside the track, the ground signal machine can feed back the occupation of the track section through light signals, and can transmit the locomotive signal reflecting the occupation of the track section to the vehicle-mounted system, and the vehicle-mounted system responds to control the operation of the train. At present, the computer interlocking device adopts a three-point checking method for normal unlocking of the route track section. The three-point checking method is that the computer interlocking device first acquires the occupied state of the track section, then acquires the occupied state of the next track section, and finally checks the clear state of the track section, to complete the unlocking of the track section; that is, the track relay of the track section is pulled down first, then the track relay of the next track section is pulled down, and finally the relay of the track section is pulled up, to complete the unlocking of the track section. Only after the route used by the current train is normally unlocked, the route required by the rear train can be handled, to ensure the interval of train operation.

[0057] As shown in Figure 1 When the train runs through the down approach track (XJG), the non-frog track section (IAG), the 1# frog track section (1DG), and the I track (IG) in turn, the non-frog track section (IAG) and the 1# frog track section (1DG) are unlocked in turn by the three-point checking method. When the non-frog track section (IAG) is unlocked, the first point check of the three-point checking method is the occupancy state at the down approach track (XJG), the second point check is the occupancy state at the non-frog track section (IAG), and the third point check is the occupancy state at the 1# frog track section (1DG) and the clear state at the non-frog track section (IAG). Among them, since the down approach track (XJG) can be temporarily stopped, the down approach track (XJG) does not need to be clear when the second point check. When the 1# frog track section (1DG) is unlocked, the first point check of the three-point checking method is the occupancy state at the non-frog track section (IAG), the second point check is the occupancy state at the 1# frog track section (1DG) and the clear state at the non-frog track section (IAG), and the third point check is the occupancy state at the I track (IG) and the clear state at the 1# frog track section (1DG). Therefore, according to the three-point checking method, the requirements that the reaction time of the computer interlocking device needs to meet include: the computer interlocking device acquires the occupancy state of the track section before the tail of the train leaves the track section; the occupancy state of the track section is acquired before the clear state of the track section; the occupancy state of the next track section is acquired before the clear state of the track section.

[0058] When the train runs at the highest allowable speed, in order to meet the requirement that the track section can be normally unlocked after the train leaves the track section, at this time the length of the track section in the station should correspond to the distance run by the train within the time of unlocking the track section by the three-point checking method, and the acquisition time of the computer interlocking device, the length of the track section in the station, and the length of the train need to be designed, therefore, the method for matching the highest allowable speed of the train by the computer interlocking device includes:

[0059] Step one, determine the minimum design length of the track section in the station.

[0060] The length of the track section in the station at least meets the total length run by the train at the highest allowable speed within the time when the on-board device receives the locomotive signal and responds.

[0061] Step two, set the performance of the computer interlocking device, and confirm whether the minimum design length of the track section meets the train running requirements.

[0062] According to the three-point checking method, when the train runs at the highest running speed in the track section, the track equipment must detect and record the occupancy state of the track section before the tail of the train leaves the track section. Therefore, the distance that the train runs at the highest allowable speed within the time when the computer interlocking equipment detects the occupancy state of the track section or the regional controller records the occupancy state of the track section must be less than the sum of the minimum design length of the track section in the station and the length of the train, that is, the computer interlocking equipment can reliably detect the occupancy state of the track section at the latest when the tail of the train is about to leave the track section, ensuring that the computer interlocking equipment can detect the occupancy state of the track section before the tail of the train leaves the track section.

[0063] Step three, determining the minimum train length according to the second interlocking period.

[0064] In the three-point checking method, the normal unlocking of a track section needs to meet the following conditions: the computer interlocking equipment first detects the occupancy state of the track section, then detects the occupancy state of the next track section, and finally detects the clear state of the track section, completing the unlocking of the track section.

[0065] Among them, the minimum time between the computer interlocking equipment detecting the occupancy state of the track section and detecting the clear state of the track section is the first interlocking period. However, the actual time required for the computer interlocking equipment to detect the state of the track section is usually greater than the first interlocking period, so the running distance of the train within the first interlocking period is not considered.

[0066] The minimum time between the computer interlocking equipment detecting the occupancy state of the next track section and detecting the clear state of the track section is the second interlocking period.

[0067] Before the train completely leaves the next track section, the computer interlocking equipment has detected the occupancy state of the track section and can first detect the occupancy state of the next track section and then detect the clear state of the track section.

[0068] The distance that the train runs at the highest running speed within the second interlocking period must be greater than the length of the train, to ensure that the computer interlocking equipment can first detect the occupancy state of the next track section and then detect the clear state of the track section.

[0069] Among them, the performance settings of the computer interlocking equipment can be changed according to project requirements, and then the design requirements of the track section in the station and the length of the train that match the performance settings of the computer interlocking equipment are obtained, and then it is determined whether the computer interlocking equipment can match the highest allowable speed of the train. The performance settings of the computer interlocking equipment that can be changed include: the first interlocking period, the second interlocking period, and the time required for the computer interlocking equipment to collect the state of the track relay.

[0070] Embodiment one

[0071] For high-speed railway, ZPW-2000 series track circuit is usually used, which sends the train signal reflecting the idle or occupied state of track section through steel rail in real time by the transmitter arranged in the signal mechanical room, and is received and decoded by the on-board equipment of train. The train signal is composed of a carrier frequency signal and a low frequency signal, and its content includes train information and train operation information.

[0072] As shown in Figure 2 , the method for calculating the highest allowable speed of train matched by computer interlocking for high-speed railway is calculated.

[0073] Step one, determine the minimum design length of track section in station.

[0074] The length of the track section in the station at least meets the total length running within the time when the train runs at the highest allowable speed, the on-board equipment receives the train signal and responds, as shown in formula 1.

[0075] L min = V max × T 设 + L 常 (Formula 1)

[0076] In the formula, L min is the minimum length of track section in station; V max is the highest allowable speed of train in track section (m / s), which is calculated as 350 km / h in this embodiment; T 设 is the response time of ground and on-board equipment (s), which is the sum of the time for track circuit to generate train signal and for on-board system to receive and execute in this embodiment; L 常 is the track allowance (m), which is taken as 20 m according to the High-Speed Railway Design Specification.

[0077] Step two, set the performance of computer interlocking equipment, and confirm whether the minimum design length of track section meets the train operation requirements.

[0078] The distance of train running at the highest allowable speed within the detection time of track section occupied state needs to be less than the sum of the minimum design length of track section in station and the length of train, that is, the computer interlocking equipment can reliably detect the occupied state of the track section when the tail of train is about to leave the track section, so as to ensure that the computer interlocking equipment can detect the occupied state of the track section before the tail of train leaves the track section.

[0079] V max × T1 < L min + L' 车 (Formula 2)

[0080] T1 is the detection time of the track section occupation state (s), i.e. the sum of the falling time of the track relay and the time for the computer interlocking device to detect the track relay state; L' 车 is the specified minimum train length (m).

[0081] Step three, determine the minimum train length according to the three-point check method.

[0082] According to the three-point check method, the computer interlocking device needs to detect the occupation state of the current track section first, and then detect the clear state of the current track section. At this time, the computer interlocking device needs at least one first interlocking period to detect the state change of the current track section. In fact, the time for the computer interlocking device to detect the state of the current track section (i.e. detect the rising or falling of the track relay of the current track section) is greater than one first interlocking period, so the time for the computer interlocking device to detect the clear state of the current track section will cover the time between the detection of the state change of the current track section by the computer interlocking device (i.e. one first interlocking period), and thus the running distance of the train within the first interlocking period is not considered.

[0083] According to the three-point check method, the computer interlocking device needs to detect the occupation state of the next track section first, and then detect the clear state of the current track section, i.e. the track relay of the next track section falls and the track relay of the current track section rises again, so the time between the detection of the state change of the adjacent track section relay by the computer interlocking device (i.e. one second interlocking period) will determine the minimum length of the train.

[0084] The length of the train must be greater than the distance that the train runs at the highest allowable speed within one second interlocking period, as shown in formula 3.

[0085] L" 车 > T 联锁周期 x V max (Formula 3)

[0086] In the formula, T 联锁周期 is the second interlocking period, and L" 车 is the minimum length of the train that meets the three-point check method.

[0087] Adaptive calculation of high-speed rail for iLOCK-II product series with the highest allowable speed of 350 km / h. According to the "Maintenance Rules for Signal Equipment on Conventional Railways", the low-frequency signal conversion time in the locomotive signal is not more than 2s, and the time for the vehicle-mounted system to receive the low-frequency signal cannot exceed 4s, i.e. T 设 does not exceed 4s. In this embodiment, since the ZPW-2000 series track circuit can send the locomotive signal in real time, the response time T 设The response time of the vehicle-mounted system to the locomotive signal is 2.5 s. In this embodiment, the high-speed rail of the iLOCK-II product series is a fixed formation train, and the minimum length of the 8-car short formation train is 200.3 m. At this time, the specified minimum train length L' 车 is considered as a constant value, i.e., L' 车 = 200 m. Meanwhile, the performance of the computer interlocking device in this embodiment is set, the second interlocking period is set to 0.25 s; the response time of the track section from the idle state to the occupied state in this embodiment is set to 2 s, i.e., the time required for the track relay to be pulled up to be dropped is 2 s; the time for the computer interlocking device to detect the drop of the track relay is set to 1.5 s, and T1 = 2 + 1.5 = 3.5 s can be obtained.

[0088] The response time T 设 of the ground and vehicle-mounted devices is substituted into formula 1, and L min = 264 m is obtained. L min is substituted into formula 2, and the running distance of the train when the computer interlocking device detects the occupied state of the train and the maximum running distance of the train when the train leaves the track section and is detected to be occupied in the track section, i.e., V max × T1 = 350 / 3.6 × 3.5 = 341 m, L min + L' 车 = 264 + 200 = 464 m, are calculated. Therefore, for the high-speed rail in this embodiment, the detection requirement of the occupation of the track section is met; and T 联锁周期 = 0.25 s is substituted into formula 3, and the minimum length L" 车 of the train when the three-point checking method is met is calculated. L' 车 > 25 m, and the specified minimum train length L' 车 of the high-speed rail of the iLOCK-II product series is 200 m, which is greater than the minimum length L" 联锁周期 of the train when the three-point checking method is met. Therefore, the performance setting of the computer interlocking device in this embodiment meets the requirement of the unlocking of the track section when the train runs at the highest allowable speed, i.e., the computer interlocking device is matched with the highest allowable speed of the train, and the minimum length of the track section in the station is obtained.

[0089] In the formula, the performance settings of the computer interlocking device, such as the detection time T1 of the occupied state of the track section and the second interlocking period T 联锁周期 , can be changed according to the design requirements, and whether the performance of the designed computer interlocking device is matched with the highest allowable speed of the train and the minimum length of the track section in the station in the design scheme can be calculated by formula 1 to formula 3.

[0090] Embodiment Two

[0091] The 25Hz phase-sensitive track circuit is mostly used for national railway general speed railway, but the 25Hz phase-sensitive track circuit itself does not have the ability to send carrier frequency and low frequency information, and cannot send the locomotive signal to the vehicle-mounted device, so the pre-stacked ZPW-2000 coding technology is used to realize the sending of the locomotive signal. When the track section is occupied, the track relay falls down, and the transmitter sends the locomotive signal to the rail through the cable, the tuning matching unit, the lead-in line and other devices, and after the train enters the track section, the locomotive induction coil installed at the front of the locomotive receives the coded information (i.e. the locomotive signal) sent by the rail, and after decoding, it can be known that several block sections on the ground are idle. Therefore, for general speed lines, the response time of the ground and vehicle-mounted device is relatively long, which is the sum of the track relay falling detection time, the coding and coding sending time, and the vehicle-mounted device decoding time, and meets the "General Speed Railway Signal Equipment Maintenance Rules", that is, the response time of the ground and vehicle-mounted device is not more than 4s.

[0092] The interface mode of the 25Hz phase-sensitive track circuit and the computer interlocking equipment includes: AC binary two-position relay combination mode and microelectronic receiver combination mode.

[0093] The AC binary two-position relay combination mode includes: AC binary two-position relay, non-polar slow-release relay and track transmission relay (GCJ) installed in the same track section. The AC binary two-position relay is a track relay, and JRJC1-70 / 240 model is selected; the non-polar slow-release relay is a track relay, and JWX-H310 model is selected; the track transmission relay can change the transmission direction of the code, and the transmitter sends the code to the rail when it is in the up state. When the AC binary two-position relay combination mode is used and the train occupies the track section, the AC binary two-position relay and the non-polar slow-release relay fall down in turn, the track transmission relay (GCJ) is up and sends the code to the rail, the code is transmitted to the vehicle-mounted device by the rail, and the vehicle-mounted device decodes to complete the response of the vehicle-mounted device to the locomotive signal; at the same time, the relay acquisition module (VIIB) of the computer interlocking equipment acquires the falling state of the non-polar slow-release relay, which is used for the track section unlocking process of the three-point check method.

[0094] At this time, the response time T2 of the ground and vehicle-mounted device is the sum of the falling time T 70 / 240落下 of the AC binary two-position relay, the falling time T H310落下 of the non-polar slow-release relay, the up time T GCJ吸起 of the track transmission relay, and the response time T 机车信号 of the vehicle-mounted device to the locomotive signal, as shown in formula 4.

[0095] T2=T 70 / 240落下 +T H310落下 +T GCJ吸起 +T 机车信号 (Formula 4)

[0096] The detection time T1 for track section occupancy status is calculated as shown in Equation 5.

[0097] T1 = T 70 / 240落下 +T H310落下 +T 区段采集-VIIB (Equation 5)

[0098] In the formula, T 区段采集-VIIB The relay acquisition module of the computer interlocking equipment acquires the time required for the stepless release relay to drop.

[0099] The microelectronic receiver combination includes: a microelectronic receiver, a stepless relay, and a track transmission relay installed in the same track section. The microelectronic receiver, model JXW25, detects the occupancy status of the track section; the stepless relay is a track relay, model JWXC-1700; and the track transmission relay can change the direction of code transmission, sending a code to the rail when in the energized state. When using this microelectronic receiver combination and a train occupies the track section, the microelectronic receiver first detects the occupancy status, then the stepless relay detects the occupancy status and deactivates; at this time, the track transmission relay deactivates and sends a code to the rail, which is received and decoded by the onboard equipment, completing the onboard equipment's response to the locomotive signal. Simultaneously, the relay acquisition module of the computer interlocking equipment acquires the deactivation status of the stepless relay for the track section unlocking process using the three-point check method.

[0100] At this point, the response time T2 of the ground and onboard equipment is the time T that the microelectronic receiver takes to detect the occupancy status of the track section. JXW25 The drop time T of the infinite relay 1700落下 The pull-up time T of the track-transmitting relay GCJ吸起 The response time T of the onboard equipment to the locomotive signal 机车信号 sum.

[0101] T2 = T JXW25 +T 1700落下 +T GCJ吸起 +T 机车信号 (Equation 6)

[0102] The detection time T1 for track section occupancy status is calculated as shown in Equation 7.

[0103] T1 = T JXW25 +T 1700落下 +T 区段采集-VIIB (Equation 7)

[0104] like Figure 3 As shown, the method of using computer interlocking to match the maximum permissible speed of conventional trains is calculated.

[0105] Step 1, determine the minimum design length of the track section in the station.

[0106] The length of the track section in the station at least meets the total length of the train running within the time of the train running at the highest allowable speed and the onboard equipment receiving the signal of the locomotive and responding, as shown in formula 1.

[0107] L min2 = V max × T2 + L 余 (Formula 8)

[0108] In the formula, L min2 is the minimum length of the track section in the station (m); V max is the highest allowable speed of the passenger train (m / s), and in the embodiment, the highest speed of 160 km / h of the passenger train is taken; and L 余 is the track allowance (m), and in the embodiment, the typical value of 20 m is taken.

[0109] Step 2, set the performance of the computer interlocking device, and confirm whether the minimum design length of the track section meets the train running requirements.

[0110] The distance of the train running at the highest allowable speed within the detection time of the occupancy state of the track section needs to be less than the sum of the minimum design length of the track section in the station and the length of the train, that is, the computer interlocking device can reliably detect the occupancy state of the track section at the latest when the tail of the train is about to leave the track section, and ensure that the computer interlocking device can detect the occupancy state of the track section before the tail of the train leaves the track section.

[0111] V max × T1 < L min2 + L’ 车 (Formula 9)

[0112] In the formula, L’ 车 is the minimum length of the train (m); since the passenger train is not fixed marshalling, the length of the train has uncertainty, and the shorter the length of the train, the higher the response speed requirement of the detection of the occupancy state of the track section, so the length of 18 m of a single train running is taken for the strict condition calculation.

[0113] Step 3, determine the minimum train length according to the three-point check method.

[0114] According to the three-point checking method, the computer interlocking device needs to detect the occupancy state of the current track section first, and then detect the clear state of the current track section. At this time, the computer interlocking device needs at least one first interlocking period to detect the state change of the current track section. In fact, the time required for the computer interlocking device to detect the state of the current track section (i.e., detect the lifting or falling of the track relay of the current track section) is greater than one first interlocking period, so the time for the computer interlocking device to detect the clear state of the current track section will cover the time between the detection of the state change of the current track section by the computer interlocking device (i.e., one first interlocking period), and thus the running distance of the train within the first interlocking period is not considered.

[0115] According to the three-point checking method, the computer interlocking device needs to detect the occupancy state of the next track section first, and then detect the clear state of the current track section, i.e., the track relay of the next track section falls and the track relay of the current track section rises again. Therefore, the time between the detection of the state change of the adjacent track section relay by the computer interlocking device (i.e., one second interlocking period) will determine the minimum length of the train.

[0116] The length of the train must be greater than the distance that the train runs at the highest allowable speed within one second interlocking period, as shown in formula 3.

[0117] L” 车 > T 联锁周期 × V max (Formula 10)

[0118] In the formula, T 联锁周期 is the second interlocking period, and L” 车 is the minimum length of the train that satisfies the three-point checking method.

[0119] When using the combination of AC binary two-position relays, the adaptability calculation is carried out for a passenger train with a highest allowable speed of 160 km / h. According to the type and performance of the AC binary two-position relay and the step release relay, the falling time T 70 / 240落下 of the AC binary two-position relay is 0.07 s, the falling time T H310落下 of the step release relay is 0.9 s, the lifting time T GCJ吸起 of the track transfer relay is 0.9 s, and the response time T 机车信号 of the on-board device to the locomotive signal is set to 2.5 s. Then, by substituting these values into formula 4, T2 = 3.97 s is obtained, which satisfies the requirements of the "Maintenance Rules for Passenger Railway Signal Equipment". At the same time, the time for the computer interlocking device to detect the falling of the track relay is set to 1.5 s, and the detection time T1 of the occupancy state of the track section is 2.72 s by formula 5. The performance of the computer interlocking device in this embodiment is set, and the second interlocking period is set to 0.25 s.

[0120] Substituting the response time T2 of the ground and on-board equipment into Equation 8, we obtain the minimum length L of the track section within the station. min The length is 197m. The minimum length L of the track section within the station is... min2 Substituting into Equation 9, calculate the train's travel distance when the computer interlocking equipment detects a train occupancy status, and the maximum travel distance when the train leaves the track section and is detected as occupant of the track section, i.e., V. max ×T1=160 / 3.6×2.72=121m, L min2 +L' 车 =197+18=215m, therefore, for the conventional speed train in this embodiment, the detection requirements for the occupancy of this track section are met; and T 联锁周期 Substituting 0.25s into Equation 10, calculate the minimum length L of the train when it meets the three-point inspection method. 车 >12m, and the minimum train length L' specified by the national railway standard speed track 车 The length is 18m, which is greater than the minimum length of 12m required for the train to meet the three-point inspection method. Therefore, when using the AC binary two-position relay combination method, the performance settings of the computer interlocking equipment meet the requirements for track section unlocking when the train is running at its maximum permissible speed. That is, the computer interlocking equipment is matched with the maximum permissible speed of the train, and at the same time, the minimum length of the track section in the station that matches it is obtained.

[0121] Adaptability calculations were performed for conventional trains with a maximum permissible speed of 160 km / h when using a combination of microelectronic receivers. The drop time T of the microelectronic receiver was obtained based on the model and performance of the microelectronic receiver and the stepless relay. JXW25落下 The drop time T of the stepless relay is 0.5s. 1700落下 The time is 0.1s, and the pull-up time T of the track-transfer relay is... GCJ吸起 The response time T of the onboard equipment to the locomotive signal is 0.9s. 机车信号 Set to 2.5s, and substituting it into Equation 6, we get T2 = 3.6s, which meets the requirements of the "Maintenance Rules for Signal Equipment of Conventional Railways". Simultaneously, the time for the computer interlocking equipment to detect the track relay falling is set to 1.5s. Equation 7 yields the detection time T1 for track section occupancy status as 2.1s. Furthermore, the performance of the computer interlocking equipment in this embodiment is set, with the second interlocking cycle set to 0.25s.

[0122] Substituting the response time T2 of the ground and on-board equipment into Equation 8, we obtain the minimum length L of the track section within the station. min The minimum length L of the track section within the station is 180m. min2Substituting into Equation 9, calculate the train's travel distance when the computer interlocking equipment detects a train occupancy status, and the maximum travel distance when the train leaves the track section and is detected as occupant of the track section, i.e., V. max ×T1=160 / 3.6×2.1=94m, L min2 +L' 车 =180+18=198m, therefore, for the conventional speed train in this embodiment, the detection requirements for the occupancy of this track section are met; and T 联锁周期 Substituting 0.25s into Equation 10, calculate the minimum length L of the train when it meets the three-point inspection method. 车 >12m, and the minimum train length L' specified by the national railway standard speed track 车 The length is 18m, which is greater than the minimum length of 12m required for the train to meet the three-point inspection method. Therefore, when using the microelectronic receiver combination method, the performance settings of the computer interlocking equipment meet the requirements for track section unlocking when the train is running at its maximum permissible speed. That is, the computer interlocking equipment is matched with the maximum permissible speed of the train, and at the same time, the minimum length of the track section in the station that matches it is obtained.

[0123] Among them, the track relay model in the AC binary two-position relay combination method and the microelectronic receiver combination method, as well as the performance settings of the computer interlocking equipment, can all be changed according to design requirements, thereby altering the detection time T1 of the track section occupancy status and the second interlocking cycle T. 联锁周期 The system uses Equations 8 to 10 to determine whether the performance of the designed computer interlocking equipment matches the maximum permissible speed of the train, and calculates the minimum length of the track section within the station in the design scheme.

[0124] Example 3

[0125] For urban rail transit, axle counting track circuits or 50Hz phase-sensitive track circuits are typically used. Computer interlocking equipment sends the occupancy status of the track section to the zone controller (ZC). The unlocking of the track section is controlled according to the three-point check method, and the occupancy status of the track section is sent back to the zone controller.

[0126] The axle counting track circuit is typically designed in subway mainline stations. It determines the occupancy status of a track section by detecting the number of train wheels using an axle counting device, without needing to send locomotive signals to the onboard equipment. The axle counting device and track relays are signal-connected. When a train passes the axle counting device, the track relay depresses, indicating that the track section is occupied; when the axle counting device completes the wheel count for one train, the track relay snaps up, indicating that the track section is vacant. The axle counting device and computer interlocking equipment are also signal-connected. The communication interface between the axle counting device and the computer interlocking equipment can be a relay interface or a network communication interface.

[0127] When the axle counter device and the computer interlocking device are connected by means of a relay interface, the state of the track relay is collected by the computer interlocking device relay collection module (VIIB) and transmitted to the regional controller (ZC), the computer interlocking device of the adjacent station, the automatic train supervision system (ATS), and the on-board device. The regional controller records the occupation state of the track section and forwards it to the on-board device. At this time, the detection time T1 of the track section occupation state can be represented as:

[0128] T1=T GJ落下 +T 区段采集-VIIB (Formula 11)

[0129] In the formula, T GJ落下 is the falling time of the track relay, and T 区段采集-VIIB is the time for the computer interlocking device to collect and send the track section occupation state to the regional controller.

[0130] When the axle counter device and the computer interlocking device are connected by means of network communication, the computer interlocking device obtains the track occupation state information sent by the axle counter device through the network and transmits it to the regional controller (ZC), the computer interlocking device of the adjacent station, the automatic train supervision system, and then the regional controller forwards the track information to the on-board device. At this time, the detection time T1 of the track section occupation state can be represented as:

[0131] T1=T GJ落下 +T 区段采集-通信接口 (Formula 12)

[0132] In the formula, T GJ落下 is the falling time of the track relay. Since the axle counter device and the computer interlocking device are connected by means of network communication, the axle counter device sends the track section occupation state to the computer interlocking device by means of communication protocol, and there is no physical track relay, so T GJ落下 can be regarded as the time for the axle counter device to detect the track section occupation state; T 区段采集-通信接口 is the time for the computer interlocking device to obtain and send the track section occupation state to the regional controller through network communication.

[0133] The 50Hz phase-sensitive track circuit is usually designed in a vehicle depot and detects whether the track section is in an occupied state by sending a specific alternating current signal. The communication interface between the 50Hz phase-sensitive track circuit and the computer interlocking device includes a TCIM all-electronic interface, an alternating current binary two-bit relay combination, and a microelectronic receiver combination.

[0134] When the TCIM full electronic interface is used between the 50Hz phase-sensitive track circuit and the computer interlocking device, the computer interlocking device directly acquires the occupation state of the track section through the track circuit electronic module TCIM, at this time, the detection time T1 of the track section occupation state can be represented as:

[0135] T1 = T 区段采集-TCIM (Formula 13)

[0136] In the formula, T 区段采集-TCIM is the time for the computer interlocking device to collect and send the track section occupation state to the area controller through the TCIM full electronic interface.

[0137] The binary two-position relay combination mode includes: AC binary two-position relays and stepless relays installed in the same track section, the AC binary two-position relays and the stepless relays are track relays, used for detecting and feeding back the occupation state of the track; the AC binary two-position relays select JRJC1-42 / 275 model; the stepless relays select JWXC-1700 model. When the interface between the 50Hz phase-sensitive track circuit and the computer interlocking device adopts the combination mode of AC binary two-position relays, and the train occupies the track section, the AC binary two-position relays and the stepless relays fall down in turn, and the falling state of the stepless relays is collected by the computer interlocking device and transmitted to the area controller, the computer interlocking device of the adjacent station, the train automatic control system, and forwarded to the on-board equipment by the area controller. At this time, the detection time T1 of the track section occupation state can be represented as:

[0138] T1 = T 42 / 275落下 + T 1700落下 + T 区段采集-VIIB (Formula 14)

[0139] In the formula, T 42 / 275落下 is the falling time of the AC binary two-position relay, T 1700落下 is the falling time of the stepless slow-release relay, and T 区段采集-VIIB is the time for the computer interlocking device to collect and send the track section occupation state to the area controller.

[0140] The microelectronic receiver combination mode comprises a microelectronic receiver and a non-polar relay installed in the same track section. The microelectronic receiver can detect the occupancy state of the track section, and the model WXJ50 is selected. The non-polar relay is a track relay, and the model JWXC-1700 is selected. When the microelectronic receiver combination mode is used for the interface between the 50Hz phase-sensitive track circuit and the computer interlocking device, and the train occupies the track section, the microelectronic receiver first detects the occupancy state of the track section, the non-polar relay then detects the occupancy state of the track section and falls down, and the falling state of the non-polar relay is collected by the computer interlocking device, transmitted to the regional controller, the computer interlocking device of the adjacent station, and the train automatic control system, and forwarded to the on-board equipment by the regional controller. At this time, the detection time T1 of the occupancy state of the track section can be represented as:

[0141] T1=T WXJ50 +T 1700落下 +T 区段采集-VIIB (15)

[0142] In the formula, T WXJ50 is the time required for the microelectronic receiver to detect the occupancy state of the track section, T 1700落下 is the falling time of the non-polar relay, and T 区段采集-VIIB is the time for the computer interlocking device to collect and send the occupancy state of the track section to the regional controller.

[0143] As shown in Figure 4 , the method for matching the highest allowable speed of the train with the computer interlocking of the urban track is calculated. Since the urban track does not need to generate a locomotive signal, the response time of the on-board equipment of the train to the locomotive signal does not need to be calculated.

[0144] Step one, determine the minimum design length of the track section in the station.

[0145] The length of the track section in the station at least meets the total length run in the time when the train runs at the highest allowable speed and the track section changes from the idle state to the station state, as shown in formula 16.

[0146] L min1 =V max ×T1-L’ 车 (16)

[0147] In the formula, L min1 is the minimum length (m) of the track section in the station, V max is the highest running speed of the subway, and in this embodiment, since the line speed of the urban rail transit is generally 80km / h, V max is taken as 80km / h, T1 is the detection time (s) of the occupancy state of the track section, and L' 车For the specified minimum train length (m), since the shortest length of the subway train is B and C type, the minimum length of each train is 19 m, and the shortest running train is 3, so L' 车 Take 57 m.

[0148] Step two, set the performance of the computer interlocking equipment, confirm whether the minimum design length of the track section meets the train running requirements.

[0149] The distance that the train runs at the highest allowable speed within the time that the computer interlocking equipment detects and sends the track section occupation state to the regional controller needs to be less than the sum of the minimum design length of the track section in the station and the train length. For the calculation of urban rail, the formula in step two is the same as that in step one.

[0150] Step three, determine the minimum train length according to the three-point check method.

[0151] According to the three-point check method, the regional controller needs to record the occupation state of the next track section and then detect the clear state of the current track section, that is, the track relay of the next track section falls down and then the track relay of the current track section rises up, so the time that the computer interlocking equipment detects the state change of the adjacent track section relay (i.e., 1 second interlocking period) will determine the minimum length of the train.

[0152] The train length must be greater than the distance that the train runs at the highest allowable speed within 1 second interlocking period, as shown in formula 3.

[0153] L” 车 > T 联锁周期 × V max (Formula 17)

[0154] In the formula, T 联锁周期 is the second interlocking period, and L” 车 is the minimum length of the train that meets the three-point check method.

[0155] When the axle counting equipment and the computer interlocking equipment are connected in the form of relay interface, the adaptive calculation is carried out for the subway with the highest allowable speed of 80 km / h. According to the “TB / T 2296-2019 Railway Signal Axle Counting Equipment”, the response time of the track circuit from idle to occupied output condition is not more than 1 s, and the falling time T GJ落下 of the track relay is 1 s. At the same time, the second interlocking period T 联锁周期 is set to 0.25 s in this embodiment; the time T 区段采集-VIIBFurthermore, since urban rail transit needs to forward the occupancy status to other systems after the computer interlocking equipment has collected the track section occupancy status, this value should be greater than the collection time of the computer interlocking equipment set in the national railway conventional speed railway. In this embodiment, it is taken as 3.315s.

[0156] The drop time T of the track relay GJ落下 The time T during which the computer interlocking equipment collects and sends the track section occupancy status to other systems. 区段采集-VIIB Substituting into Equation 11, the detection time T1 for track section occupancy is found to be 4.315s. The maximum operating speed V of the subway... max Substituting into Equation 16, we obtain the minimum length L of the track section within the station. min1 =V max ×T1-L 车 =4.315×80 / 3.6-57m=39m. Simultaneously, the second interlocking cycle T... 联锁周期 Substituting into Equation 17, we obtain the minimum length L for the train to satisfy the three-point inspection method. 车 It is 6m. This is because the minimum train length L' stipulated by urban rail transit regulations... 车 The length is 57m, which is greater than the minimum length of 6m required for the train to meet the three-point inspection method. Therefore, when the axle counting equipment and the computer interlocking equipment are connected via a relay interface, the performance settings of the computer interlocking equipment must meet the requirements for unlocking the track section when the train is running at its maximum permissible speed. That is, the computer interlocking equipment must match the maximum permissible speed of the train, and at the same time, obtain the minimum length of the track section within the station that matches it.

[0157] When the axle counting equipment and computer interlocking equipment are connected via network communication, adaptive calculations are performed for subways with a maximum permissible speed of 80 km / h. According to the standard TB / T 2296-2019 Railway Signal Axle Counting Equipment, the drop time T of the track relay is obtained. GJ落下 The time T is set to 1 second. Simultaneously, the computer interlocking equipment is configured to collect and send the track section occupancy status to the area controller via the TCIM fully electronic interface. 区段采集-通信接口 Second interlocking cycle T 联锁周期 In this embodiment, T 区段采集-通信接口 Set to 2s, the second interlocking cycle T 联锁周期 Set it to 0.25s.

[0158] According to Equation 12, the detection time T1 for the track section occupancy status is 3s. Substituting this value into Equation 16, the minimum length L of the track section within the station is obtained. min1 =V max ×T1-L 车 =3×80 / 3.6-57m=10m. Simultaneously, the second interlocking cycle T... 联锁周期Substituting into Equation 17, we obtain the minimum length L for the train to satisfy the three-point inspection method. 车 It is 6m. This is because the minimum train length L' stipulated by urban rail transit regulations... 车 The length is 57m, which is greater than the minimum length of 6m required for the train to meet the three-point inspection method. Therefore, when the axle counting equipment and the computer interlocking equipment are connected via network communication, the performance settings of the computer interlocking equipment must meet the requirements for unlocking the track section when the train is running at its maximum permissible speed. That is, the computer interlocking equipment is matched with the maximum permissible speed of the train, and at the same time, the minimum length of the track section within the station that matches it is obtained.

[0159] When the 50Hz phase-sensitive track circuit and the computer interlocking equipment use the TCIM fully electronic interface, adaptive calculations are performed for a metro system with a maximum permissible speed of 80km / h. In this case, it is only necessary to set the time T for the computer interlocking equipment to collect and send the track section occupancy status to the area controller via the TCIM fully electronic interface. 区段采集-TCIM Second interlocking cycle T 联锁周期 In this embodiment, the time T for the computer interlocking equipment to collect and send the track section occupancy status to the area controller via the TCIM fully electronic interface is used. 区段采集-TCIM Set the time to 4.525s, and set the second interlocking cycle T 联锁周期 Set it to 0.25s.

[0160] According to Equation 13, the detection time T1 for track section occupancy status is 4.525s. Substituting this value into Equation 16, the minimum length L of the track section within the station is obtained. min1 =V max ×T1-L 车 =4.525×80 / 3.6-57m=44m. Simultaneously, the second interlocking cycle T... 联锁周期 Substituting into Equation 17, we obtain the minimum length L for the train to satisfy the three-point inspection method. 车 It is 6m. This is because the minimum train length L' stipulated by urban rail transit regulations... 车 The length is 57m, which is greater than the minimum length of 6m required for the train to meet the three-point inspection method. Therefore, when the 50Hz phase-sensitive track circuit and the computer interlocking equipment use the TCIM fully electronic interface, the performance settings of the computer interlocking equipment meet the requirements for track section unlocking when the train is running at its maximum permissible speed. That is, the computer interlocking equipment is matched with the maximum permissible speed of the train, and at the same time, the minimum length of the track section in the station that matches it is obtained.

[0161] Adaptability calculations were performed for a metro system with a maximum permissible speed of 80 km / h when using a combination of AC binary two-position relays. The drop time T of the AC binary two-position relays was calculated based on the relay model. 42 / 275落下 The drop time T of the infinite relay 1700落下= 0.1 s. At the same time, the second interlocking period T 联锁周期 = 0.25 s in this embodiment; the time T 区段采集-VIIB = 3.315 s in this embodiment.

[0162] According to formula 14, the detection time T1 of the track section occupancy state is 3.485 s, and the value is substituted into formula 16 to obtain the minimum length L min1 = V max × T1 - L 车 = 3.485 x 80 / 3.6 - 57 m = 21 m. At the same time, the second interlocking period T 联锁周期 is substituted into formula 17 to obtain the minimum length L” 车 of the train satisfying the three-point checking method, which is 6 m. Since the minimum length L 车 of the train specified by the urban rail transit is 57 m, which is greater than the minimum length 6 m of the train satisfying the three-point checking method. Therefore, when the AC binary two-position relay combination is adopted, the performance setting of the computer interlocking equipment meets the requirement of track section unlocking when the train runs at the highest allowable speed, that is, the computer interlocking equipment is matched with the highest allowable speed of the train, and the minimum length of the track section in the station is obtained.

[0163] When the microelectronic receiver combination is adopted, the adaptability calculation is carried out for the subway with the highest allowable speed of 80 km / h. According to the model of the track relay, the detection time T WXJ50 of the microelectronic receiver and the falling time T 1700落下 of the non-polar relay are 0.5 s and 0.1 s, respectively. At the same time, the second interlocking period T 联锁周期 = 0.25 s in this embodiment; the time T 区段采集-VIIB = 3.315 s in this embodiment.

[0164] According to formula 15, the detection time T1 of the track section occupancy state is 3.915 s, and the value is substituted into formula 16 to obtain the minimum length L min1 = V max × T1 - L 车 = 3.915 x 80 / 3.6 - 57 m = 30 m. At the same time, the second interlocking period T 联锁周期 is substituted into formula 17 to obtain the minimum length L” 车 of the train satisfying the three-point checking method, which is 6 m. Since the minimum length L 车The length is 57m, which is greater than the minimum length of 6m required for the train to meet the three-point inspection method. Therefore, when using a combination of microelectronic receivers, the performance settings of the computer interlocking equipment meet the requirements for unlocking the track section when the train is running at its maximum permissible speed. That is, the computer interlocking equipment is matched with the maximum permissible speed of the train, and at the same time, the minimum length of the track section in the station that matches it is obtained.

[0165] When using axle-counting track circuits or 50Hz phase-sensitive track circuits, the interface method between the track section and the computer interlocking equipment, the model of the track relays, and the performance settings of the computer interlocking equipment can all be changed according to design requirements, thereby altering the detection time T1 of the track section occupancy status and the second interlocking cycle T. 联锁周期 The system uses Equations 16 and 17 to determine whether the performance of the designed computer interlocking equipment matches the maximum allowable speed of the train, and calculates the minimum length of the track section within the station in the design scheme.

[0166] In summary, this invention, based on the three-point inspection method, solves the problems of performance settings of computer interlocking equipment, train length matching the computer interlocking equipment, and track section length within the station that should be met when calculating trains running at the maximum permissible speed. This provides technical support for the development of new computer interlocking equipment and project implementation. Furthermore, based on the existing train control logic of rail transit, the matching method of computer interlocking equipment for high-speed railways, national railway conventional speed tracks, and urban rail transit is refined, making the matching method of the computer interlocking equipment of this invention more accurate.

[0167] 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. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above description. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A method of determining whether a computer interlocking device matches a train maximum allowable speed, characterized by, The computer interlocking device judges whether the train can run at the highest allowable speed and whether the route is normally unlocked; the condition for the route to be normally unlocked is that the computer interlocking device first detects the occupation state of the current track section, then detects the occupation state of the next track section, and finally detects the clearance state of the current track section; When the route is normally unlocked, the computer interlocking device collects the occupation state of the current track section before the train tail leaves the track section; the distance that the train runs at the highest allowable speed within the detection time of the track occupation state is less than the sum of the minimum length of the track section in the station and the length of the train; and the computer interlocking device first detects the occupation state of the next track section, and then detects the clearance state of the current track section; the length of the train is greater than the distance that the train runs at the highest allowable speed within the minimum time between the detection of the occupation state of the next track section and the detection of the occupation state of the current track section by the computer interlocking device; When the track circuit sends the locomotive signal reflecting the occupation state of the track section to the on-board device, the minimum length of the track section in the station is the length that the train runs at the highest allowable speed within the time that the on-board device receives the locomotive signal reflecting the occupation state of the track section and responds.

2. The method of determining whether a computer interlocking equipment matches a train maximum allowable speed according to claim 1, wherein, The detection time of the occupation state of the track section includes the response time of the track section to the occupation state and the time for the computer interlocking device to detect the occupation state of the current track section.

3. The method of determining whether a computer interlocking equipment matches a train maximum allowable speed according to claim 1, wherein, The time for the on-board device to receive the locomotive signal reflecting the occupation state of the track section and respond includes the response time of the track section to the occupation state, the time for the track circuit to send the locomotive signal, and the response time of the on-board device to the locomotive signal.

4. The method of determining whether a computer interlocking equipment matches a train maximum allowable speed according to claim 1, wherein, The detection time of the occupation state of the track section includes the response time of the track section to the occupation state and the time for the computer interlocking device to detect the occupation state of the current track section; wherein the response time of the track section to the occupation state includes the drop time of the track relay provided in the current track section.

5. The method of determining whether a computer interlocking equipment matches a train maximum allowable speed according to claim 4, wherein, The time for the on-board device to receive the locomotive signal and respond includes the response time of the on-board device to the locomotive signal.

6. The method of determining whether a computer interlocking equipment matches a train maximum allowable speed according to claim 1, wherein, For the national railway, the interface between the track and the computer interlocking device adopts an alternating binary two-position relay combination mode, which includes an alternating binary two-position relay, a stepless delay relay, and a track transmission relay installed in the same track section; the alternating binary two-position relay and the stepless delay relay are track relays; the track transmission relay can control the transmission direction of the locomotive signal in the form of coded information; when the track section is in the occupation state, the alternating binary two-position relay and the stepless delay relay drop in turn, and the track transmission relay is attracted, sending the locomotive signal to the on-board device; at the same time, the computer interlocking device detects the drop state of the stepless delay relay; The detection time of the track section occupancy state comprises: a response time of the track section to the occupancy state, and a time T 区段采集-VIIB that the computer interlocking device detects the falling state of the non-polar slow-release relay; wherein the response time of the track section to the occupancy state comprises: a falling time T 70 / 240落下 of the alternating binary two-position relay, and a falling time T H310落下 of the non-polar slow-release relay; and the detection time T1 of the track section occupancy state can be represented as: T1 = T 70 / 240落下 + T H310落下 + T 区段采集-VIIB .

7. The method of determining whether a computer interlocking equipment matches a train maximum allowable speed according to claim 6, wherein, The time for the vehicle-mounted device to receive the locomotive signal and respond includes: the response time of the track section to the occupancy state, the time for the track circuit to send the locomotive signal, and the response time T2 of the vehicle-mounted device to the locomotive signal 机车信号 ; wherein the time for the track circuit to send the locomotive signal includes: the time T1 for the track relay to be pulled up GCJ吸起 ; and the time T2 for the vehicle-mounted device to receive the locomotive signal and respond can be represented as: T2 = T 70 / 240落下 + T H310落下 + T GCJ吸起 + T 机车信号 In the formula, T 70 / 240落下 is the drop time of an AC binary two-position relay, T H310落下 is the drop time of a non-polarized time-delay relay.

8. The method of determining whether a computer interlocking equipment matches a train maximum allowable speed according to claim 1, wherein, The application is applied to national railway and when the interface between track and computer interlocking device adopts microelectronic receiver combination mode, the microelectronic receiver combination mode comprises: microelectronic receiver, non-polar relay and track transmission relay installed in the same track section, the microelectronic receiver can detect the occupation state of the track section; the non-polar relay is track relay; the track transmission relay can control the transmission direction of the coded information form of train signal; when the track section is in the occupation state, the microelectronic receiver detects the occupation state of the track section first, then the non-polar relay detects the occupation state of the track section and falls down, and the track transmission relay is attracted to send the train signal to the vehicle-mounted device; meanwhile, the computer interlocking device detects the falling state of the non-polar relay; The detection time of the track section occupancy state comprises: a response time of the track section to the occupancy state, and a time T of the computer interlocking device detecting the falling state of the non-polar slow-release relay 区段采集-VIIB ; wherein the response time of the track section to the occupancy state comprises: a detection time T of the microelectronic receiver JXW25 , and a falling time T 1700落下 of the non-polar relay; and the detection time T1 of the track section occupancy state can be represented as: T1 = T JXW25 + T 1700落下 + T 区段采集-VIIB .

9. The method of determining whether a computer interlocking equipment matches a train maximum allowable speed according to claim 8, wherein, The time for the vehicle-mounted device to receive the locomotive signal and respond includes: the response time of the track section to the occupancy state, the time for the track circuit to send the locomotive signal, and the response time T2 of the vehicle-mounted device to the locomotive signal 机车信号 ; wherein the time for the track circuit to send the locomotive signal includes: the time T1 for the track relay to be pulled up GCJ吸起 ; and the time T2 for the vehicle-mounted device to receive the locomotive signal and respond can be represented as: T2 = T JXW25 + T 1700落下 + T GCJ吸起 + T 机车信号 In the formula, T JXW25 is the detection time of the microelectronic receiver, T 1700落下 is the drop time of the non-polar relay.

10. The method of determining whether a computer interlocking equipment matches a train maximum allowable speed according to claim 1, wherein, The application is applied to urban rail transit, the urban rail transit adopts axle counting track circuit, when the axle counting device and the computer interlocking device are connected in the mode of relay interface, the occupation state of the track section is detected by the axle counting device, and is transmitted to the track relay arranged in the track section, so that the track relay falls down; the state of the track relay is collected by the relay acquisition module of the computer interlocking device, and is transmitted to the regional controller; The occupation state of the track section is recorded by the regional controller; The detection time of the track section occupancy state comprises: a response time of the track section to the occupancy state, a time for the computer interlocking device to detect the occupancy state of the track section, and a time for the computer interlocking device to send the occupancy state of the track section to the area controller; wherein the response time of the track section to the occupancy state comprises: a falling time T of the track relay GJ落下 ; and the detection time T1 of the track section occupancy state can be represented as: T1 = T GJ落下 +T 区段采集-VIIB In the formula, T 区段采集-VIIB The time for the computer interlocking device to collect and send the track section occupancy status to the area controller.

11. The method of determining whether a computer interlocking equipment matches a train maximum allowable speed according to claim 1, wherein, The application is applied to urban rail transit, the urban rail transit adopts axle counting track circuit, when the axle counting device and the computer interlocking device are connected in the mode of network communication, the occupation state of the track section is detected by the axle counting device; The occupation state of the track section transmitted by the axle counting device is acquired by the computer interlocking device through the network, and is transmitted to the regional controller; The occupation state of the track section is recorded by the regional controller; The detection time of the track section occupancy state comprises: a response time of the track section to the occupancy state, a time for the computer interlocking device to detect the occupancy state of the track section, and a time for the computer interlocking device to send the occupancy state of the track section to the area controller; wherein the response time of the track section to the occupancy state comprises: a falling time T of the track relay GJ落下 The detection time T1 of the track section occupancy state can be represented as: T1 = T GJ落下 +T 区段采集-通信接口 In the formula, T 区段采集-通信接口 is the time for the computer interlocking device to acquire and send the track section occupancy status to the regional controller through network communication.

12. The method of determining whether a computer interlocking equipment matches a train maximum allowable speed according to claim 1, wherein, The application is applied to urban rail transit, the urban rail transit adopts 50Hz phase-sensitive track circuit, when the 50Hz phase-sensitive track circuit and the computer interlocking device are connected in the mode of TCIM full electronic interface, the occupation state of the track section is directly acquired by the computer interlocking device through the track circuit electronic module TCIM; The detection time of the occupation state of the track section comprises: the time of the computer interlocking device detecting the occupation state of the track section, and the time of the computer interlocking device transmitting the occupation state of the track section to the regional controller; the detection time T1 of the occupation state of the track section can be expressed as: T1 = T 区段采集-TCIM In the formula, T 区段采集-TCIM The time for the computer interlocking device to collect and send the track section occupancy state to the regional controller through the TCIM all-electronic interface.

13. The method of determining whether a computer interlocking equipment matches a train maximum allowable speed according to claim 1, wherein, The application is applied to urban rail transit, the urban rail transit adopts 50Hz phase-sensitive track circuit, when the interface between the 50Hz phase-sensitive track circuit and the computer interlocking device adopts the mode of binary two-position relay combination, the binary two-position relay combination mode comprises: alternating current binary two-position relay and non-polar relay installed in the same track section, the alternating current binary two-position relay and the non-polar relay are track relays, and are used for detecting and feeding back the occupation state of the track; when the track section is in the occupation state, the alternating current binary two-position relay and the non-polar relay fall down in sequence, and the falling state of the non-polar relay is collected by the computer interlocking device and is transmitted to the regional controller; the occupation state of the track section is recorded by the regional controller. The detection time of the track section occupancy state comprises: a response time of the track section to the occupancy state, a time for the computer interlocking device to detect the occupancy state of the track section, and a time for the computer interlocking device to send the occupancy state of the track section to the area controller; wherein the response time of the track section to the occupancy state comprises: a falling time T of an alternating binary two-bit relay 42 / 275落下 , a falling time T of a step relay 1700落下 ; and the detection time T1 of the occupancy state of the track section can be represented as: T1 = T 42 / 275落下 + T 1700落下 + T 区段采集-VIIB In the formula, T 区段采集-VIIB The time for the computer interlocking device to collect and send the track section occupancy status to the area controller.

14. The method of determining whether a computer interlocking equipment matches a train maximum allowable speed according to claim 1, wherein, The application is applied to urban rail transit which adopts 50Hz phase-sensitive track circuit, when the interface of 50Hz phase-sensitive track circuit and computer interlocking device adopts microelectronic receiver combination mode, the microelectronic receiver combination mode comprises: microelectronic receiver and non-polar relay installed in the same track section; the microelectronic receiver can detect the occupation state of the track section; the non-polar relay is a track relay; when the track section is in the occupation state, the microelectronic receiver detects the occupation state of the track section first, then the non-polar relay detects the occupation state of the track section and falls down, and the falling state of the non-polar relay is collected by the computer interlocking device and transmitted to the regional controller; the occupation state of the track section is recorded by the regional controller. The detection time of the track section occupancy state comprises: a response time of the track section to the occupancy state, a time for the computer interlocking device to detect the occupancy state of the track section, and a time for the computer interlocking device to send the occupancy state of the track section to the area controller; wherein the response time of the track section to the occupancy state comprises: a time T required for the microelectronic receiver to detect the occupancy state of the track section WXJ50 , a time T for the infinitely variable relay to drop 1700落下 ; and the detection time T1 of the occupancy state of the track section can be represented as: T1 = T WXJ50 + T 1700落下 + T 区段采集-VIIB In the formula, T 区段采集-VIIB is the time for the computer interlocking device to collect and send the track section occupancy status to the regional control system.

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