Method for judging whether computer interlocking equipment is matched with highest permissible speed of train or not

Abstract

The invention discloses a method for judging whether computer interlocking equipment is matched with the highest permissible speed of a train or not. Whether the computer interlocking equipment can meet the requirement that a route is normally unlocked when the train runs at the highest permissible speed or not is judged; the condition of normal unlocking of the route is that the computer interlocking equipment firstly detects the occupation state of the track section, then detects the occupation state of the next track section, and finally detects the clearing state of the track section. The method solves the problem that when the train runs at the highest allowable speed, the performance setting of the computer interlocking equipment, the train length matched with the computer interlocking equipment and the in-station rail section length should meet the requirements, and provides technical support for new product research and development and project implementation of the computer interlocking equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of national railway and rail transit communication signals, and in particular to a method for judging whether a computer interlocking device matches a maximum permissible speed of a train. Background Art

[0002] Computer interlocking equipment has been widely used in national railways, local railways and urban rail transit in my country, and its adaptability to railways of different grades has been fully verified on site. Computer interlocking equipment is applicable to high-speed railways with high-speed operation (350km / h) and 3-minute operation intervals, conventional railways with medium-speed operation (160km / h) and 8-minute operation intervals, and urban rail transit lines with low-speed operation (80km / h) and 1.5-minute operation intervals.

[0003] However, the design of computer interlocking equipment to match the allowable speeds of trains on different lines lacks relevant design methods and verification methods, which hinders the development of new products of computer interlocking equipment. At the same time, there is a lack of corresponding design standards for station track design requirements and train design requirements that match new products. Summary of the invention

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

[0005] In order to achieve the above-mentioned purpose, the present invention provides a method for judging whether a computer interlocking device matches the maximum allowable speed of a train, and judging whether the computer interlocking device can satisfy the normal unlocking of the route when the train runs at the maximum allowable speed; the condition for normal unlocking of the route is that the computer interlocking device first detects the occupancy status of the current track section, then detects the occupancy status of the next track section, and finally detects the clearing status of the current track section.

[0006] Optionally, when the approach is unlocked normally, the computer interlocking device collects the occupancy status of the track section before the tail of the train leaves the track section; the distance traveled by the train at the maximum allowable speed within the detection time of the track occupancy status is less than the sum of the minimum length of the track section within the station and the train length.

[0007] Optionally, 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 device to detect the occupancy status of the track section.

[0008] Optionally, when the approach is unlocked normally, the computer interlocking device first detects the occupancy status of the next track section and then detects the clearance status of the current track section; the train length is greater than the distance the train runs at the maximum allowable speed within the minimum time between the computer interlocking device detecting the occupancy status of the next track section and detecting the occupancy status of the current section.

[0009] Optionally, when the track circuit sends a locomotive signal reflecting the occupancy status of the track section to the on-board equipment, the minimum length of the track section within the station is the length that the train runs at the maximum allowed speed during the time when the on-board equipment receives the locomotive signal reflecting the occupancy status of the track section and responds.

[0010] Optionally, the time it takes for the on-board equipment to receive a locomotive signal reflecting the occupancy status of a track section and respond includes: the response time of the track section to the occupancy status, the time it takes for the track circuit to send a locomotive signal, and the response time of the on-board equipment to the locomotive signal.

[0011] Optionally, 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 device to detect the occupancy status of the track section; wherein, the response time of the track section to the occupancy status includes the falling time of the track relay set in the track section.

[0012] Optionally, the time taken by the on-board device to receive the locomotive signal and respond includes: the response time of the on-board device to the locomotive signal.

[0013] Optionally, in application to national railway conventional railway, the interface between the track and the computer interlocking device adopts an AC binary two-position relay combination mode, and the AC binary two-position relay combination mode includes: an AC binary two-position relay, a stepless slow-release relay, and a track transfer relay installed in the same track section; the AC binary two-position relay and the stepless slow-release relay are both track relays; the track transfer relay can control the transmission direction of the locomotive signal in the form of coded information; when the track section is in an occupied state, the AC binary two-position relay and the stepless slow-release relay fall down in turn, and the track transfer relay is sucked up to send a locomotive signal to the on-board equipment; at the same time, the computer interlocking device detects the falling state of the stepless slow-release relay;

[0014] The detection time of the track section occupation state includes: the response time of the track section to the occupation state, the time T of the computer interlocking device detecting the falling state of the stepless slow-release relay 区段采集-VIIB ; Among them, the response time of the track section to the occupied state includes: the fall time T of the AC binary two-position relay 70 / 240落下 , the falling time T of the stepless slow-release relay H310落下 The detection time T1 of the track section occupancy state 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 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 T of the on-board device to the locomotive signal. 机车信号 Among them, the time for the track circuit to send a locomotive signal includes: the time T when the track transfer relay is sucked up GCJ吸起 The time T2 when the on-board equipment receives the locomotive signal and responds can be expressed as:

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

[0018] Where, T 70 / 240落下 is the fall time of the AC binary two-position relay, T H310落下 It is the falling time of the stepless slow-release relay.

[0019] Optionally, when applied to a national railway conventional railway, when the interface between the track and the computer interlocking device adopts a microelectronic receiver combination, the microelectronic receiver combination includes: a microelectronic receiver, a stepless relay, and a track transfer relay installed in the same track section, the microelectronic receiver can detect the occupation status of the track section; the stepless relay is a track relay; the track transfer relay can control the transmission direction of the locomotive signal in the form of coded information; when the track section is in an occupied state, the microelectronic receiver first detects the occupation status of the track section, the stepless relay then detects the occupation status of the track section and falls, and the track transfer relay is sucked up to send a locomotive signal to the on-board equipment; at the same time, the computer interlocking device detects the falling state of the stepless relay;

[0020] The detection time of the track section occupation state includes: the response time of the track section to the occupation state, the time T of the computer interlocking device detecting the falling state of the stepless slow-release relay 区段采集-VIIB ; Among them, the response time of the track section to the occupied state includes: the detection time T of the microelectronic receiver JXW25 , the falling time T of the stepless relay 1700落下 The detection time T1 of the track section occupancy state can be expressed as:

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

[0022] Optionally, the time for the on-board 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 T of the on-board device to the locomotive signal. 机车信号 Among them, the time for the track circuit to send a locomotive signal includes: the time T when the track transfer relay is sucked up GCJ吸起 The time T2 when the on-board equipment receives the locomotive signal and responds can be expressed as:

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

[0024] Where, T JXW25 is the detection time of the microelectronic receiver, T 1700落下 It is the falling time of the stepless relay.

[0025] Optionally, the invention is applied to urban rail transit, wherein the urban rail transit adopts an axle counting track circuit. When the axle counting device and the computer interlocking device are connected by means of a relay interface, the axle counting device detects the occupation status of the track section, and transmits the occupation status of the track section to the track relay arranged in the track section, so that the track relay falls; the relay acquisition module of the computer interlocking device acquires the status of the track relay and transmits it to the regional controller; the regional controller records the occupation status of the track section;

[0026] The detection time of the track section occupancy status includes: the response time of the track section to the occupancy status, the time when the computer interlocking device detects the occupancy status of the track section, and the time when the computer interlocking device sends the track section occupancy status to the regional controller; wherein, the response time of the track section to the occupancy status includes: the falling time T of the track relay GJ落下 The detection time T1 of the track section occupancy state can be expressed as:

[0027] T1=T GJ落下 +T 区段采集-VIIB

[0028] Where, 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.

[0029] Optionally, the invention is applied to urban rail transit, wherein the urban rail transit adopts an axle counting track circuit, and when the axle counting device and the computer interlocking device are connected by means of network communication, the occupancy status of the track section is detected by the axle counting device; the computer interlocking device obtains the track occupancy status sent by the axle counting device through the network and transmits it to the regional controller; the regional controller records the occupancy status of the track section;

[0030] The detection time of the track section occupancy status includes: the response time of the track section to the occupancy status, the time when the computer interlocking device detects the occupancy status of the track section, and the time when the computer interlocking device sends the track section occupancy status to the regional controller; wherein, the response time of the track section to the occupancy status includes: the falling time T of the track relay GJ落下 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] Where, T 区段采集-通信接口 The time for the computer interlocking device to obtain the track section occupancy status through network communication and send it to the area controller.

[0033] Optionally, it 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 obtains the occupancy status of the track section through the track circuit electronic module TCIM;

[0034] The detection time of the track section occupancy state includes: the time when the computer interlocking device detects the track section occupancy state, and the time when the computer interlocking device sends the track section occupancy state to the regional controller; the detection time T1 of the track section occupancy state can be expressed as:

[0035] T1=T 区段采集-TCIM

[0036] Where, T 区段采集-TCIM The time when the computer interlocking equipment collects and sends the track section occupancy status to the zone controller through the TCIM fully electronic interface.

[0037] Optionally, it is applied to urban rail transit, and the urban rail transit adopts a 50Hz phase-sensitive track circuit. When the interface between the 50Hz phase-sensitive track circuit and the computer interlocking device adopts a binary two-position relay combination, the binary two-position relay combination includes: an AC binary two-position relay and a stepless relay installed in the same track section, and the AC binary two-position relay and the stepless relay are both track relays for detecting and feeding back the occupation status of the track; when the track section is in an occupied state, the AC binary two-position relay and the stepless relay fall down in sequence, and the computer interlocking device collects the falling state of the stepless relay and transmits it to the regional controller; the regional controller records the occupation status of the track section;

[0038] The detection time of the track section occupancy status includes: the response time of the track section to the occupancy status, the time when the computer interlocking device detects the occupancy status of the track section, and the time when the computer interlocking device sends the track section occupancy status to the regional controller; wherein, the response time of the track section to the occupancy status includes: the fall time T of the AC binary two-position relay 42 / 275落下 , the falling time T of the stepless relay 1700落下 The detection time T1 of the track section occupancy state can be expressed as:

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

[0040] Where, 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, it is applied to urban rail transit, and the urban rail transit adopts a 50Hz phase-sensitive track circuit. When the interface between the 50Hz phase-sensitive track circuit and the computer interlocking device adopts a microelectronic receiver combination, the microelectronic receiver combination includes: a microelectronic receiver and a stepless relay installed in the same track section; 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 in an occupied state, the microelectronic receiver first detects the occupancy status of the track section, and the stepless relay then detects the occupancy status of the track section and falls, and the computer interlocking device collects the falling status of the stepless relay and transmits it to the regional controller; the regional controller records the occupancy status of the track section;

[0042] The detection time of the track section occupancy status includes: the response time of the track section to the occupancy status, the time when the computer interlocking device detects the occupancy status of the track section, and the time when the computer interlocking device sends the track section occupancy status to the regional controller; wherein, the response time of the track section to the occupancy status includes: the time required for the microelectronic receiver to detect the occupancy status of the track section T WXJ50 , the time T for the stepless relay to fall 1700落下 The detection time T1 of the track section occupancy state can be expressed as:

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

[0044] Where, 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 solution of the present invention has at least the following beneficial effects:

[0046] The present invention solves the problem of calculating the performance setting of the computer interlocking equipment, the train length matching the computer interlocking equipment and the requirements of the track section length in the station when the train runs at the maximum allowable speed based on the three-point inspection method. It can provide a calculation method and an inspection method for the design standards of trains and stations matching the product in the process of computer interlocking equipment product design, and provides technical support for the research and development of new products and project implementation of computer interlocking equipment.

[0047] According to the existing rail transit vehicle control logic, the present invention proposes three calculation methods for the performance design requirements of computer interlocking devices for high-speed railways, national railway conventional tracks, and urban rail transit, as well as the station track section requirements and train length requirements that match the computer interlocking devices. According to the process of unlocking the track section by the three-point inspection method, the acquisition link of the computer interlocking device in the interface mode of using different track sections and computer interlocking devices is refined, and 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 when the computer interlocking device adopts the track section state and the time required for normal unlocking of the route are extracted, so that the results obtained by the matching method of the computer interlocking device of the present invention are more accurate.

[0048] For urban rail transit that does not require on-board equipment to receive locomotive signals, the present invention is based on the design principle of matching trains with computer interlocking equipment on national railway conventional tracks, and uses the time when computer interlocking equipment collects and sends the track section occupancy status to the regional controller to calculate the minimum length of the track section within the station, thereby realizing the limitation of the performance of the computer interlocking equipment and the length of the track section within the station. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a schematic diagram of the track section occupancy status collection of the present invention.

[0050] Figure 2 This is a flow chart of a method for determining whether a computer interlocking device matches a maximum permissible speed of a train, applied to a high-speed railway, in one embodiment of the present invention.

[0051] Figure 3 In another embodiment of the present invention, a method for determining whether a computer interlocking device matches a maximum allowable train speed is applied to a national conventional railway.

[0052] Figure 4 This is a flow chart of a method for determining whether a computer interlocking device matches a maximum permissible speed of a train in a third embodiment of the present invention, applied to urban rail transit. DETAILED DESCRIPTION

[0053] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0055] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] The computer interlocking device collects the status of the track section. When the track section is in an idle state, the track relay (GJ) is energized, 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 falls, that is, the track circuit detects the occupied state of the track section. The computer interlocking device can collect the status of the track relay and then determine whether the track section is occupied. For the track circuit, a signal machine is provided beside the track. The ground signal machine can feedback the occupancy status of the track section through light signals, and can transmit the locomotive signal reflecting the occupancy status of the track section to the on-board system, and the on-board system responds to control the operation of the train. At present, the computer interlocking equipment adopts a three-point inspection method for the normal unlocking of the approach track section. The three-point inspection method is that the computer interlocking equipment first collects the occupation status of the current track section, then collects the occupation status of the next track section, and finally checks the clearance status of the current track section to complete the unlocking of the current track section; that is, the track relay of the current track section falls first, then the track relay of the next track section falls, and finally the relay of the current track section is attracted to complete the unlocking of the current track section. Only after the approach used by the current car is normally unlocked can the approach required by the following car be processed to ensure the train running interval.

[0057] like Figure 1 As shown, when the train passes through the down approach track (XJG), the non-switch track section (IAG), the 1# turnout track section (1DG), and the I track (IG) in sequence, the non-switch track section (IAG) and the 1# turnout track section (1DG) are unlocked in sequence by the three-point inspection method. When the non-switch track section (IAG) is unlocked, the first point inspection of the three-point inspection method is the occupied state at the down approach track (XJG), the second point inspection is the occupied state at the non-switch track section (IAG), and the third point inspection is the occupied state at the 1# turnout track section (1DG) and the cleared state at the non-switch 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 in the cleared state during the second point inspection. When the 1# turnout track section (1DG) is unlocked, the first point of the three-point inspection method is the occupied status of the non-turnout track section (IAG), the second point is the occupied status of the 1# turnout track section (1DG) and the cleared status of the non-turnout track section (IAG), and the third point is the occupied status of the I track (IG) and the cleared status of the 1# turnout track section (1DG). Therefore, according to the three-point inspection method, the requirements that the reaction time of the computer interlocking device needs to meet include: the computer interlocking device collects the occupied status of the track section before the rear of the train leaves the track section; collects the occupied status of the current track section first and then collects the cleared status of the current track section; collects the occupied status of the next track section first and then collects the cleared status of the current track section.

[0058] When the train runs at the maximum permissible speed, in order to ensure that the track section can be unlocked normally after the train leaves the track section, the track length in the station should correspond to the distance the train runs within the time of unlocking the track section through the three-point inspection method. It is necessary to design the collection time of the computer interlocking device, the length of the track section in the station and the train length. Therefore, the method for matching the maximum permissible speed of the train with the computer interlocking device includes:

[0059] Step 1: Determine the minimum design length of the track section within the station.

[0060] The length of the track section within the station is at least sufficient to meet the total length that the train can run at the maximum allowed speed within the time it takes for the on-board equipment to receive the locomotive signal and respond.

[0061] Step 2: Set the performance of the computer interlocking equipment and confirm whether the minimum design length of the track section meets the train operation requirements.

[0062] According to the three-point inspection method, when a train runs at the highest operating speed in the track section, the track equipment must detect and record the occupancy status of the track section before the rear of the train leaves the track section. Therefore, within the time when the computer interlocking equipment detects the occupancy status of the track section or the area controller records the occupancy status of the track section, the distance that the train runs at the highest allowed speed 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 status of the track section at the latest when the rear of the train is about to clear the track section, ensuring that the computer interlocking equipment can detect the occupancy status of the track section before the rear of the train leaves the track section.

[0063] Step three, determine the minimum train length according to the second interlocking cycle.

[0064] In the three-point inspection method, the normal unlocking of a track section requires that the computer interlocking device first detects the occupancy status of the track section, then detects the occupancy status of the next track section, and finally detects the clearance status of the track section to complete the unlocking of the track section.

[0065] The minimum time between when the computer interlocking device detects the occupied state of the track section and when it detects the cleared state of the track section is the first interlocking cycle. However, the time required for the computer interlocking device to actually detect the track section state is usually longer than the first interlocking cycle, so the running distance of the train in the first interlocking cycle is not considered.

[0066] The minimum time between the computer interlocking device detecting the occupied state of the next track section and detecting the cleared state of the current track section is the second interlocking cycle.

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

[0068] The distance that the train runs at the highest operating speed in the second interlocking cycle must be greater than the train length to ensure that the computer interlocking equipment can first detect the occupancy status of the next track section and then detect the clearance status of the current track section.

[0069] Among them, the performance settings of the computer interlocking device can be changed according to the project requirements, so as to obtain the design requirements of the track section and train length in the station that match the performance settings of the computer interlocking device, and then determine whether the computer interlocking device can match the maximum allowable speed of the train. The performance settings that can be changed by the computer interlocking device include: the first interlocking cycle, the second interlocking cycle, and the time required for the computer interlocking device to collect the status of the track relay.

[0070] Embodiment 1

[0071] For high-speed railways, ZPW-2000 series track circuits are usually used. The transmitter installed in the signal machine room sends the locomotive signal reflecting the idle or occupied status of the track section through the rails in real time, and is received and decoded by the on-board equipment of the train. Among them, the locomotive signal consists of a carrier frequency signal and a low-frequency signal, and its content includes train information and train operation information.

[0072] like Figure 2 As shown, the method of using computer interlocking to match the maximum allowable speed of trains on high-speed railways is calculated.

[0073] Step 1: Determine the minimum design length of the track section within the station.

[0074] The length of the track section within the station is at least the total length that the train runs at the maximum allowed speed and the on-board equipment receives the locomotive signal and responds, as shown in Formula 1.

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

[0076] Where, L min V is the minimum length of the track section within the station; max T is the maximum permissible speed of the train in the track section (m / s). In this embodiment, the maximum permissible speed is 350 km / h for calculation; 设 L is the response time of the ground and vehicle-mounted equipment (s). In this embodiment, it is the sum of the time it takes for the track circuit to generate the locomotive signal and the time it takes for the vehicle-mounted system to receive and execute the signal. 常 is the track margin (m), which is taken as 20m according to the “High-speed Railway Design Code”.

[0077] Step 2: Set the performance of the computer interlocking equipment and confirm whether the minimum design length of the track section meets the train operation requirements.

[0078] The distance that the train runs at the maximum allowable speed within the detection time of the track section occupancy status must be less than the sum of the minimum design length of the track section within the station and the train length, that is, the computer interlocking device can reliably detect the occupancy status of the track section at the latest when the tail of the train is about to clear the track section, ensuring that the computer interlocking device can detect the occupancy status of the track section before the tail of the train leaves the track section.

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

[0080] Where, T1 is the detection time of track section occupation status (s), that is, the sum of the falling time of track relay and the time of computer interlocking device detecting track relay status; L' 车 is the specified minimum train length (m).

[0081] Step 3: Determine the minimum train length based on the three-point inspection method.

[0082] According to the three-point inspection method, the computer interlocking device must first detect the occupied state of the track section, and then detect the cleared state of the track section. At this time, the computer interlocking device needs at least one first interlocking cycle to detect the state change of the track section. In fact, the time required for the computer interlocking device to detect the state of the track section (that is, to detect the suction or drop of the track relay of the track section) is greater than one first interlocking cycle. Therefore, the time for the computer interlocking device to detect the cleared state of the track section will cover the time between the computer interlocking device detecting the state change of the track section (that is, one first interlocking cycle), so the running distance of the train within the first interlocking cycle is not considered.

[0083] According to the three-point inspection method, the computer interlocking device must first detect the occupancy status of the next track section and then detect the clearance status of the current track section, that is, the track relay of the next track section falls and then the track relay of the current track section is attracted again. Therefore, the time between the computer interlocking device detecting the state change of the relays of adjacent track sections (that is, 1 second interlocking cycle) will determine the minimum length of the train.

[0084] The train length must be greater than the distance that the train runs at the maximum allowed speed within one second interlocking cycle, as shown in Formula 3.

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

[0086] Where, T 联锁周期 For the second interlocking cycle, L” 车 It is the minimum length of the train when it meets the three-point inspection method.

[0087] The adaptability calculation is performed for the iLOCK-II product series of high-speed rail with a maximum permissible speed of 350km / h. According to the "Rules for the Maintenance of Conventional Railway Signal Equipment", the low-frequency signal conversion time in the locomotive signal should not exceed 2s, and the time when the on-board system cannot receive the low-frequency signal should not exceed 4s, that is, T 设 In this embodiment, since the ZPW-2000 series track circuit can send locomotive signals in real time, the response time of the ground and onboard equipment is T 设is the response time of the onboard system to the locomotive signal, which is 2.5s. In this embodiment, the high-speed rail of the iLOCK-II product series is a fixed-marshaling train, and the minimum length of the 8-car short-marshaling EMU is 200.3m. At this time, the specified minimum train length L' 车 Can be regarded as a constant, that is, L' 车 =200m. At the same time, the performance of the computer interlocking device in this embodiment is set, and the second interlocking cycle is set to 0.25s; the response time of the track section from the idle state to the occupied state in this embodiment is set to 2s, that is, the time required for the track relay to be attracted to fall is 2s; the time when the computer interlocking device detects the fall of the track relay is set to 1.5s, and it can be obtained that: T1=2+1.5=3.5s.

[0088] The response time T of the ground and vehicle equipment 设 Substituting into equation 1, we get L min =264m. min Substituting into formula 2, we can calculate the travel distance of the train when the computer interlocking device detects the train is in the occupied state, and the maximum travel distance of the train when it leaves the track section and is detected to be in the occupied state of the track section, that is, V max ×T1=350 / 3.6×3.5=341m, L min +L' 车 =264+200=464m, therefore, for the high-speed railway in this embodiment, the detection requirements for the occupancy of this track section are met; and T 联锁周期 = 0.25s Substitute into formula 3 to calculate the minimum length L" when the train meets the three-point inspection method 车 >25m, and the minimum train length L' specified for high-speed trains of the iLOCK-II product series 车 200m, which is greater than the minimum length L when the train meets the three-point inspection method" 车 In this embodiment, the performance setting of the computer interlocking device meets the requirement of unlocking the track section when the train runs at the maximum allowable speed, that is, the computer interlocking device matches the maximum allowable speed of the train, and at the same time obtains the minimum length of the track section in the station that matches it.

[0089] Among them, the performance settings of the computer interlocking equipment, such as: the detection time T1 of the track section occupancy status, the second interlocking period T 联锁周期 , the values ​​can be changed according to the design requirements, and Equations 1 to 3 can be used to determine whether the performance of the designed computer interlocking equipment matches the maximum allowable speed of the train, and the minimum length of the track section within the station in the design scheme can be calculated.

[0090] Embodiment 2

[0091] Most of the national railway conventional railways use 25Hz phase-sensitive track circuits, but the 25Hz phase-sensitive track circuits themselves do not have the ability to send carrier frequency and low-frequency information, and cannot send locomotive signals to on-board equipment. Therefore, the pre-superimposed ZPW-2000 electrocoding technology is used to send locomotive signals. When the track section is occupied, the transmitter sends locomotive signals to the rails through cables, tuning and matching units, lead wires and other equipment when the track relay falls. After the train enters the track section, the locomotive induction coil installed in the front of the locomotive receives the electrocoded information (i.e. locomotive signals) sent by the rails. After decoding, it can be known how many block sections are idle on the ground. Therefore, for conventional lines, the response time of ground and on-board equipment is relatively long, which is the sum of the three times of track relay fall detection, coding and coding, and on-board equipment decoding, and meets the "Rules for the Maintenance of Conventional Railway Signal Equipment", that is, the response time of ground and on-board equipment does not exceed 4s.

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

[0093] The combination of AC binary two-position relays includes: AC binary two-position relays, stepless slow-release relays, and track transfer relays (GCJ) installed in the same track section. Among them, the AC binary two-position relay is a track relay, and the JRJC1-70 / 240 model is selected; the stepless slow-release relay is a track relay, and the JWXC-H310 model is selected; the track transfer relay can change the transmission direction of the code, and the transmitter sends the code to the rail when it is in the suction state. When the combination of AC binary two-position relays is adopted, and the train occupies the track section, the AC binary two-position relay and the stepless slow-release relay fall down in turn, the track transfer relay (GCJ) is sucked up and sends the code to the rail, and the rail transmits the code to the on-board equipment, and the on-board equipment decodes it, completing the response of the on-board equipment to the locomotive signal; at the same time, the relay acquisition module (VIIB) of the computer interlocking equipment collects the falling state of the stepless slow-release relay for the track section unlocking process of the three-point inspection method.

[0094] At this time, the response time T2 of the ground and vehicle equipment is the time T2 of the AC binary two-position relay falling. 70 / 240落下 , the time T for the stepless slow release relay to fall H310落下 , the time T for the track transfer relay to be attracted GCJ吸起 , the response time of the on-board equipment to the locomotive signal T 机车信号 The sum of is 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 calculation of the detection time T1 of the track section occupancy status is shown in Formula 5.

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

[0098] Where, T 区段采集-VIIB The relay acquisition module of the computer interlocking device collects the time required for the stepless slow-release relay to fall into the state.

[0099] The combination of microelectronic receivers includes: a microelectronic receiver, a stepless relay, and a track transfer relay installed in the same track section. Among them, the microelectronic receiver can detect the occupation status of the track section, and the JXW25 model is selected; the stepless relay is a track relay, and the JWXC-1700 model is selected; the track transfer relay can change the transmission direction of the code, and the transmitter sends the code to the rail when it is in the suction state. When the microelectronic receiver combination is adopted, and the train occupies the track section, the microelectronic receiver first detects the occupation status of the track section, and the stepless relay then detects the occupation status of the track section and falls; at this time, the track transfer relay falls and sends the code to the rail, and the on-board equipment receives and decodes the code, completing the response of the on-board equipment to the locomotive signal; at the same time, the relay acquisition module of the computer interlocking equipment collects the falling state of the stepless slow-release relay, which is used in the track section unlocking process of the three-point inspection method.

[0100] At this time, the response time T2 of the ground and vehicle equipment is the time T2 for the microelectronic receiver to detect the track section occupancy status. JXW25 , the falling time T of the stepless relay 1700落下 , the pickup time T of the track transfer relay GCJ吸起 , the response time of the on-board equipment to the locomotive signal T 机车信号 sum.

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

[0102] The calculation of the detection time T1 of the track section occupancy status is shown in Formula 7.

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

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

[0105] Step 1: Determine the minimum design length of the track section within the station.

[0106] The length of the track section within the station is at least the total length that the train runs at the maximum allowed speed and the on-board equipment receives the locomotive signal and responds, as shown in Formula 1.

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

[0108] Where, L min2 is the minimum length of the track section within the station (m); V max L is the maximum permissible speed of a conventional train (m / s). In this embodiment, the maximum speed of a conventional train is 160 km / h. 余 is the track margin (m), and a typical value of 20m is taken in this embodiment.

[0109] Step 2: Set the performance of the computer interlocking equipment and confirm whether the minimum design length of the track section meets the train operation requirements.

[0110] During the detection time of the track section occupancy status, the distance that the train runs at the maximum allowable speed must be less than the sum of the minimum design length of the track section within the station and the train length, that is, the computer interlocking device can reliably detect the occupancy status of the track section at the latest when the tail of the train is about to clear the track section, ensuring that the computer interlocking device can detect the occupancy status 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] Where L' 车 is the minimum train length (m); since conventional trains are not fixed in formation, the length of the train is uncertain, and the shorter the length of the train, the higher the response speed required for the detection of the track section occupancy status. Therefore, the length of a single train section of 18m is taken for strict condition calculation.

[0113] Step 3: Determine the minimum train length based on the three-point inspection method.

[0114] According to the three-point inspection method, the computer interlocking device must first detect the occupied state of the track section, and then detect the cleared state of the track section. At this time, the computer interlocking device needs at least one first interlocking cycle to detect the state change of the track section. In fact, the time required for the computer interlocking device to detect the state of the track section (that is, to detect the suction or drop of the track relay of the track section) is greater than one first interlocking cycle. Therefore, the time for the computer interlocking device to detect the cleared state of the track section will cover the time between the computer interlocking device detecting the state change of the track section (that is, one first interlocking cycle), so the running distance of the train within the first interlocking cycle is not considered.

[0115] According to the three-point inspection method, the computer interlocking device must first detect the occupancy status of the next track section and then detect the clearance status of the current track section, that is, the track relay of the next track section falls and then the track relay of the current track section is attracted again. Therefore, the time between the computer interlocking device detecting the state change of the relays of adjacent track sections (that is, 1 second interlocking cycle) will determine the minimum length of the train.

[0116] The train length must be greater than the distance that the train runs at the maximum allowed speed within one second interlocking cycle, as shown in Formula 3.

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

[0118] Where, T 联锁周期 For the second interlocking cycle, L” 车 It is the minimum length of the train when it meets the three-point inspection method.

[0119] When the combination of AC binary two-position relays is used, the adaptability calculation is performed for ordinary trains with a maximum allowable speed of 160km / h. According to the models and performances of AC binary two-position relays and stepless slow-release relays, the drop time T of the AC binary two-position relay is obtained. 70 / 240落下 is 0.07s, the drop time of the stepless slow-release relay is T H310落下 is 0.9s, and the pickup time of the track transfer relay is T GCJ吸起 is 0.9s. At the same time, the response time of the on-board equipment to the locomotive signal is T 机车信号 Set it as 2.5s, and then substitute it into formula 4 to get T2 = 3.97s, which meets the requirements of the "Rules for the Maintenance of Conventional Railway Signal Equipment". At the same time, the time for the computer interlocking device to detect the fall of the track relay is set to 1.5s, and the detection time T1 of the track section occupancy state is obtained by formula 5 as 2.72s, and the performance of the computer interlocking device in this embodiment is set, and the second interlocking period is set to 0.25s.

[0120] Substituting the response time T2 of the ground and vehicle equipment into equation 8, we can obtain the minimum length L of the track section within the station: min The minimum length of the track section in the station is L min2 Substituting into formula 9, we can calculate the travel distance of the train when the computer interlocking device detects the train is in the occupied state, and the maximum travel distance of the train when it leaves the track section and is detected to be in the occupied state of the track section, that is, V max ×T1=160 / 3.6×2.72=121m, L min2 +L' 车 =197+18=215m, therefore, for the ordinary speed train in this embodiment, the detection requirement of the track section occupancy is met; and T 联锁周期 = 0.25s Substitute into formula 10 to calculate the minimum length L" when the train meets the three-point inspection method 车 >12m, and the minimum train length L' specified by the national railway conventional track 车 The length of the train is 18m, which is greater than the minimum length of 12m when the train meets the three-point inspection method. Therefore, when the AC binary two-position relay combination is adopted, the performance setting of the computer interlocking device meets the requirement of unlocking the track section when the train runs at the maximum allowable speed, that is, the computer interlocking device matches the maximum allowable speed of the train, and at the same time obtains the minimum length of the track section in the station that matches it.

[0121] When the microelectronic receiver combination mode is adopted, the adaptability calculation is performed for ordinary speed trains with a maximum allowable speed of 160km / h. According to the model and performance of the microelectronic receiver and the stepless relay, the drop time T of the microelectronic receiver is obtained. JXW25落下 is 0.5s, the falling time of the stepless relay is T 1700落下 is 0.1s, and the pickup time of the track transfer relay is T GCJ吸起 is 0.9s. At the same time, the response time of the on-board equipment to the locomotive signal is T 机车信号 Set it as 2.5s, and then substitute it into formula 6 to get T2 = 3.6s, which meets the requirements of the "Rules for the Maintenance of Conventional Railway Signal Equipment". At the same time, the time for the computer interlocking device to detect the fall of the track relay is set to 1.5s, and the detection time T1 of the track section occupancy state is obtained by formula 7 as 2.1s, and the performance of the computer interlocking device in this embodiment is set, and the second interlocking period is set to 0.25s.

[0122] Substituting the response time T2 of the ground and vehicle equipment into equation 8, we can obtain the minimum length L of the track section within the station: min The minimum length of the track section in the station is L min2Substituting into formula 9, we can calculate the travel distance of the train when the computer interlocking device detects the train is in the occupied state, and the maximum travel distance of the train when it leaves the track section and is detected to be in the occupied state of the track section, that is, V max ×T1=160 / 3.6×2.1=94m、L min2 +L' 车 =180+18=198m, therefore, for the ordinary speed train in this embodiment, the detection requirement of the track section occupancy is met; and T 联锁周期 = 0.25s Substitute into formula 10 to calculate the minimum length L" when the train meets the three-point inspection method 车 >12m, and the minimum train length L' specified by the national railway conventional track 车 It is 18m, which is greater than the minimum length of 12m when the train meets the three-point inspection method. Therefore, when the microelectronic receiver combination is adopted, the performance setting of the computer interlocking device meets the requirement of unlocking the track section when the train runs at the maximum allowable speed, that is, the computer interlocking device matches the maximum allowable speed of the train, and at the same time obtains the minimum length of the track section in the station that matches it.

[0123] Among them, the combination mode of AC binary two-position relay, the track relay model in the microelectronic receiver combination mode, and the performance settings of the computer interlocking equipment can be changed according to the design needs, thereby changing the detection time T1 of the track section occupancy state, the second interlocking period T 联锁周期 , and use equations 8 to 10 to determine whether the performance of the designed computer interlocking equipment matches the maximum allowable speed of the train, and calculate the minimum length of the track section within the station in the design scheme.

[0124] Embodiment 3

[0125] For urban rail transit, axle counting track circuits or 50Hz phase-sensitive track circuits are usually used. Computer interlocking equipment is used to send 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 inspection method, and the occupancy status of the track section is sent to the zone controller.

[0126] The axle counting track circuit is usually designed in the subway mainline station. The axle counting device detects the number of wheels of the train to determine the occupied state of the track section, without sending a locomotive signal to the on-board equipment. The axle counting device and the track relay are connected by signal. When the train passes the axle counting device, the track relay falls, and the track section is in an occupied state; when the axle counting device completes the wheel counting of a train, the track relay is attracted, and the track section is in an idle state. The axle counting device and the computer interlocking device are connected by signal. The communication interface between the axle counting device and the computer interlocking device can adopt a relay interface or a network communication interface.

[0127] When the axle counting device and the computer interlocking device are connected by means of a relay interface, the computer interlocking device relay acquisition module (VIIB) collects the status of the track relay and transmits it to the zone controller (ZC), the computer interlocking device of the adjacent station, and the train automatic control system (ATS); the zone controller records the occupancy status of the track section and forwards it to the on-board device. At this time, the detection time T1 of the track section occupancy status can be expressed as:

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

[0129] Where, T GJ落下 is the falling time of the track relay, 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.

[0130] When the axle counting device and the computer interlocking device are connected by network communication, the computer interlocking device obtains the track occupancy status information sent by the axle counting device through the network and transmits it to the zone controller (ZC), the computer interlocking device of the adjacent station, and the train automatic control system. The zone controller then forwards the track information to the on-board device. At this time, the detection time T1 of the track section occupancy status can be expressed as:

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

[0132] Where, T GJ落下 is the falling time of the track relay. When the axle counting device and the computer interlocking device are connected by network communication, the axle counting device relies on the communication protocol to send the track section occupancy status to the computer interlocking device. No physical track relay is set. Therefore, T GJ落下 It can be regarded as the time for the axle counting device to detect the track section occupancy status; T 区段采集-通信接口 The time for the computer interlocking device to obtain the track section occupancy status through network communication and send it to the area controller.

[0133] The 50Hz phase-sensitive track circuit is usually designed in the vehicle depot, and detects whether the track section is occupied by sending a specific AC signal. The communication interface between the 50Hz phase-sensitive track circuit and the computer interlocking equipment includes: TCIM full electronic interface, AC binary two-position relay combination, and microelectronic receiver combination.

[0134] When the TCIM fully electronic interface is used between the 50Hz phase-sensitive track circuit and the computer interlocking device, the computer interlocking device directly obtains the occupancy status of the track section through the track circuit electronic module TCIM. At this time, the detection time T1 of the track section occupancy status can be expressed as:

[0135] T1=T 区段采集-TCIM (Formula 13)

[0136] Where, T 区段采集-TCIM The time when the computer interlocking equipment collects and sends the track section occupancy status to the zone controller through the TCIM fully electronic interface.

[0137] The combination of binary two-position relays includes: AC binary two-position relays and stepless relays installed in the same track section. The AC binary two-position relays and stepless relays are both track relays used to detect and feedback the track occupancy status; the AC binary two-position relays are of the JRJC1-42 / 275 model; the stepless relays are of the JWXC-1700 model. When the interface between the 50Hz phase-sensitive track circuit and the computer interlocking device adopts an AC binary two-position relay combination, and the train occupies the track section, the AC binary two-position relays and the stepless relays fall down in turn, and the computer interlocking device collects the falling status of the stepless relays and transmits it to the regional controller, the computer interlocking equipment of the adjacent station, and the train automatic control system, and forwards it to the on-board equipment by the regional controller. At this time, the detection time T1 of the track section occupancy status can be expressed as:

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

[0139] Where, T 42 / 275落下 is the fall time of the AC binary two-position relay, T 1700落下 T is the drop time of the stepless slow-release relay, 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.

[0140] The microelectronic receiver combination includes: a microelectronic receiver and a stepless relay installed in the same track section. The microelectronic receiver can detect the occupancy status of the track section, and the WXJ50 model is selected. The stepless relay is a track relay, and the JWXC-1700 model is selected. When the interface between the 50Hz phase-sensitive track circuit and the computer interlocking device adopts a microelectronic receiver combination, and the train occupies the track section, the microelectronic receiver first detects the occupancy status of the track section, and the stepless relay then detects the occupancy status of the track section and falls. The computer interlocking device collects the falling status of the stepless relay and transmits it to the regional controller, the computer interlocking equipment of the adjacent station, and the train automatic control system, and forwards it to the on-board equipment by the regional controller. At this time, the detection time T1 of the track section occupancy status can be expressed as:

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

[0142] Where, T WXJ50 is the time required for the microelectronic receiver to detect the occupancy status of the track section, T 1700落下 is the time for the stepless relay to fall, 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.

[0143] like Figure 4 As shown, the maximum permissible speed of the train is calculated by computer interlocking matching for urban rail. Since urban rail does not need to generate locomotive signals, it is not necessary to calculate the response time of the train's onboard equipment to the locomotive signals.

[0144] Step 1: Determine the minimum design length of the track section within the station.

[0145] The length of the track section within the station must at least meet the total length that the train can travel at the maximum allowed speed and the track section can be changed from an idle state to a station-used state, as shown in Formula 16.

[0146] L min1 =V max ×T1-L' 车 (Formula 16)

[0147] Where, L min1 is the minimum length of the track section within the station (m); V max is the maximum operating speed of the subway. In this embodiment, since the line speed of urban rail transit is generally 80 km / h, V max Take 80km / h; T1 is the detection time of track section occupancy status (s); L' 车is the minimum length of the train (m). Since the shortest length of the subway is B and C, the minimum length of each train is 19m, and the shortest running train is 3, so L' 车 Take 57m.

[0148] Step 2: Set the performance of the computer interlocking equipment and confirm whether the minimum design length of the track section meets the train operation requirements.

[0149] The distance that the train runs at the maximum allowed speed within the time when the computer interlocking equipment detects and sends the track section occupancy status to the zone controller must be less than the sum of the minimum design length of the track section in the station and the train length. For urban rail calculations, the formula in step 2 is the same as the formula in step 1.

[0150] Step 3: Determine the minimum train length based on the three-point inspection method.

[0151] According to the three-point inspection method, the area controller needs to record the occupancy status of the next track section and then detect the clearance status of the current track section based on the detection results of the computer interlocking equipment. That is, the track relay of the next track section falls and then the track relay of the current track section is attracted again. Therefore, the time between the computer interlocking equipment detecting the state change of the relays of adjacent track sections (that is, 1 second interlocking cycle) will determine the minimum length of the train.

[0152] The train length must be greater than the distance that the train runs at the maximum allowed speed within one second interlocking cycle, as shown in Formula 3.

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

[0154] Where, T 联锁周期 For the second interlocking cycle, L” 车 It is the minimum length of the train when it meets the three-point inspection method.

[0155] When the axle counting device and the computer interlocking device are connected by relay interface, the adaptability calculation is performed for the subway with a maximum allowable speed of 80km / 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 no more than 1s, and the fall time T of the track relay is obtained. GJ落下 At the same time, set the second interlocking period T 联锁周期 , in this embodiment, 0.25s is taken; set the time T for the computer interlocking device to collect and send the track section occupancy status to other systems 区段采集-VIIB, and because urban rail transit needs to forward the occupancy status to other systems after the computer interlocking device collects the track section occupancy status, this value should be greater than the collection time of the computer interlocking device set in the national railway conventional railway, and 3.315s is taken in this embodiment.

[0156] Set the falling time T of the track relay GJ落下 , the time T for the computer interlocking equipment to collect and send the track section occupancy status to other systems 区段采集-VIIB Substituting into equation 11, we get the detection time T1 of the track section occupancy state is 4.315s. max Substituting into equation 16, we get the minimum length L of the track section within the station. min1 =V max ×T1-L 车 =4.315×80 / 3.6-57m=39m. At the same time, the second interlocking period T 联锁周期 Substituting into equation 17, we can obtain the minimum length L" of the train when it satisfies the three-point inspection method. 车 The minimum train length L' is 6m. 车 It is 57m, which is greater than the minimum length of 6m when the train meets the three-point inspection method. Therefore, when the axle counting device and the computer interlocking device are connected by relay interface, the performance setting of the computer interlocking device meets the requirement of unlocking the track section when the train runs at the maximum allowable speed, that is, the computer interlocking device matches the maximum allowable speed of the train, and at the same time obtains the minimum length of the track section in the station that matches it.

[0157] When the axle counting device and the computer interlocking device are connected by network communication, the adaptability calculation is performed for the subway with a maximum allowable speed of 80km / h. According to the provisions of "TB / T 2296-2019 Railway Signal Axle Counting Equipment", the falling time T of the track relay is obtained. GJ落下 At the same time, the time T for the computer interlocking device to collect and send the track section occupancy status to the regional controller through the TCIM full electronic interface is set. 区段采集-通信接口 , the second interlocking period T 联锁周期 In this embodiment, T 区段采集-通信接口 Set to 2s, the second interlocking period T 联锁周期 Set to 0.25s.

[0158] According to formula 12, the detection time T1 of the track section occupancy state is 3s, and this value is substituted into formula 16 to obtain the minimum length L of the track section within the station. min1 =V max ×T1-L 车 =3×80 / 3.6-57m=10m. At the same time, the second interlocking period T 联锁周期Substituting into equation 17, we can obtain the minimum length L" of the train when it satisfies the three-point inspection method. 车 The minimum train length L' is 6m. 车 It is 57m, which is greater than the minimum length of 6m when the train meets the three-point inspection method. Therefore, when the axle counting device and the computer interlocking device are connected by network communication, the performance setting of the computer interlocking device meets the requirement of unlocking the track section when the train runs at the maximum allowable speed, that is, the computer interlocking device matches the maximum allowable speed of the train, and at the same time obtains the minimum length of the track section in the station that matches it.

[0159] When the TCIM full electronic interface is used between the 50Hz phase-sensitive track circuit and the computer interlocking equipment, the adaptability calculation is performed for the subway with a maximum allowable speed of 80km / h. At this time, it is only necessary to set the time T of the computer interlocking equipment to collect and send the track section occupancy status to the zone controller through the TCIM full electronic interface. 区段采集-TCIM , the second interlocking period T 联锁周期 In this embodiment, the computer interlocking device collects the track section occupancy status time T through the TCIM full electronic interface and sends it to the regional controller. 区段采集-TCIM Set to 4.525s, and set the second interlocking period T 联锁周期 Set to 0.25s.

[0160] According to formula 13, the detection time T1 of the track section occupancy state is 4.525s, and this value is substituted into formula 16 to obtain the minimum length L of the track section within the station. min1 =V max ×T1-L 车 =4.525×80 / 3.6-57m=44m. At the same time, the second interlocking period T 联锁周期 Substituting into equation 17, we can obtain the minimum length L" of the train when it satisfies the three-point inspection method. 车 The minimum train length L' is 6m. 车 It is 57m, which is greater than the minimum length of 6m when the train meets the three-point inspection method. Therefore, when the TCIM full electronic interface is used between the 50Hz phase-sensitive track circuit and the computer interlocking equipment, the performance setting of the computer interlocking equipment meets the requirements of track section unlocking when the train runs at the maximum allowable speed, that is, the computer interlocking equipment matches the maximum allowable speed of the train, and at the same time obtains the minimum length of the track section in the station that matches it.

[0161] When using the combination of AC binary two-position relays, the adaptability calculation is performed for the subway with a maximum allowable speed of 80km / h. According to the model of the track relay, the AC binary two-position relay drop time T 42 / 275落下 , Stepless relay drop time T 1700落下The values ​​are 0.07s and 0.1s respectively. At the same time, the second interlocking period T is set 联锁周期 , in this embodiment, 0.25s is taken; set the time T for the computer interlocking device to collect and send the track section occupancy status to other systems 区段采集-VIIB , in this embodiment, 3.315s is taken.

[0162] According to formula 14, the detection time T1 of the track section occupancy state is 3.485s, and this value is substituted into formula 16 to obtain the minimum length L of the track section within the station. min1 =V max ×T1-L 车 =3.485×80 / 3.6-57m=21m. At the same time, the second interlocking period T 联锁周期 Substituting into equation 17, we can obtain the minimum length L" of the train when it satisfies the three-point inspection method. 车 The minimum train length L' is 6m. 车 It is 57m, which is greater than the minimum length of 6m when the train meets the three-point inspection method. Therefore, when the AC binary two-position relay combination is adopted, the performance setting of the computer interlocking device meets the requirement of unlocking the track section when the train runs at the maximum allowable speed, that is, the computer interlocking device matches the maximum allowable speed of the train, and at the same time obtains the minimum length of the track section in the station that matches it.

[0163] When the microelectronic receiver combination is used, the adaptability calculation is performed for the subway with a maximum allowable speed of 80 km / h. According to the model of the track relay, the detection time T of the microelectronic receiver is WXJ50 , Stepless relay drop time T 1700落下 The values ​​are 0.5s and 0.1s respectively. At the same time, the second interlocking period T is set 联锁周期 , in this embodiment, 0.25s is taken; set the time T for the computer interlocking device to collect and send the track section occupancy status to other systems 区段采集-VIIB , in this embodiment, 3.315s is taken.

[0164] According to formula 15, the detection time T1 of the track section occupancy state is 3.915s, and this value is substituted into formula 16 to obtain the minimum length L of the track section within the station. min1 =V max ×T1-L 车 =3.915×80 / 3.6-57m=30m. At the same time, the second interlocking period T 联锁周期 Substituting into equation 17, we can obtain the minimum length L" of the train when it satisfies the three-point inspection method. 车 The minimum train length L' is 6m. 车It is 57m, which is greater than the minimum length of 6m when the train meets the three-point inspection method. Therefore, when the microelectronic receiver combination is adopted, the performance setting of the computer interlocking device meets the requirement of unlocking the track section when the train runs at the maximum allowable speed, that is, the computer interlocking device matches the maximum allowable speed of the train, and at the same time obtains the minimum length of the track section in the station that matches it.

[0165] When the axle counting track circuit or 50Hz phase-sensitive track circuit is used, the interface mode between the track section and the computer interlocking device, the model of the track relay, and the setting of the computer interlocking device performance can be changed according to the design needs, thereby changing the detection time T1 of the track section occupancy status, the second interlocking period T2, and the second interlocking period T3. 联锁周期 And through equations 16 and 17, it is determined whether the performance of the designed computer interlocking equipment matches the maximum allowable speed of the train, and the minimum length of the track section within the station in the design scheme is calculated.

[0166] In summary, the present invention solves the problem of calculating the performance setting of the computer interlocking device, the train length matched with the computer interlocking device and the requirements of the track section length in the station when the train runs at the maximum allowable speed according to the three-point inspection method, and provides technical support for the new product development and project implementation of the computer interlocking device; and according to the existing vehicle control logic of rail transit, the matching method of the computer interlocking device of high-speed railway, national railway conventional track and urban rail transit is refined, so that the result obtained by the matching method of the computer interlocking device of the present invention is more accurate.

[0167] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. A method for determining whether a computer interlocking device matches the maximum permissible speed of a train, characterized in that: Determine whether the computer interlocking device can meet the normal unlocking of the route when the train runs at the maximum allowed speed; the condition for normal unlocking of the route is that the computer interlocking device first detects the occupation status of the current track section, then detects the occupation status of the next track section, and finally detects the clearing status of the current track section.

2. The method for determining whether the computer interlocking device matches the maximum permissible speed of the train according to claim 1, characterized in that: When the approach is unlocked normally, the computer interlocking device collects the occupancy status of the track section before the tail of the train leaves the track section; the distance traveled by the train at the maximum allowable speed within the detection time of the track occupancy status is less than the sum of the minimum length of the track section within the station and the train length.

3. The method for determining whether the computer interlocking device matches the maximum permissible speed of the train according to claim 2, characterized in that: 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 device to detect the occupancy status of the track section.

4. The method for determining whether the computer interlocking device matches the maximum permissible speed of the train according to claim 2, characterized in that: When the approach is unlocked normally, the computer interlocking device first detects the occupancy status of the next track section and then detects the clearance status of the current track section; the train length is greater than the distance the train runs at the highest allowed speed within the minimum time between the computer interlocking device detecting the occupancy status of the next track section and detecting the occupancy status of the current section.

5. The method for determining whether the computer interlocking device matches the maximum permissible speed of the train according to claim 4, characterized in that: When the track circuit sends a locomotive signal reflecting the occupancy status of the track section to the on-board equipment, the minimum length of the track section within the station is the length that the train runs at the maximum allowed speed during the time when the on-board equipment receives the locomotive signal reflecting the occupancy status of the track section and responds.

6. The method for determining whether the computer interlocking device matches the maximum permissible speed of the train according to claim 5, characterized in that: The time it takes for the on-board equipment to receive the locomotive signal reflecting the occupancy status of the track section and respond includes: the response time of the track section to the occupancy status, the time it takes for the track circuit to send the locomotive signal, and the response time of the on-board equipment to the locomotive signal.

7. The method for determining whether the computer interlocking device matches the maximum permissible speed of the train according to claim 5, characterized in that: 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 device to detect the occupancy status of the track section; wherein, the response time of the track section to the occupancy status includes the falling time of the track relay set in the track section.

8. The method for determining whether the computer interlocking device matches the maximum permissible speed of the train according to claim 7, characterized in that: The time taken by the on-board equipment to receive the locomotive signal and respond includes: the response time of the on-board equipment to the locomotive signal.

9. The method for determining whether the computer interlocking device matches the maximum permissible speed of the train according to claim 5, characterized in that: Applied to the national railway conventional railway, the interface between the track and the computer interlocking equipment adopts an AC binary two-position relay combination mode, and the AC binary two-position relay combination mode includes: an AC binary two-position relay, a stepless slow-release relay, and a track transfer relay installed in the same track section; the AC binary two-position relay and the stepless slow-release relay are both track relays; the track transfer relay can control the transmission direction of the locomotive signal in the form of coded information; when the track section is in an occupied state, the AC binary two-position relay and the stepless slow-release relay fall down in turn, and the track transfer relay is sucked up to send a locomotive signal to the on-board equipment; at the same time, the computer interlocking equipment detects the falling state of the stepless slow-release relay; The detection time of the track section occupation state includes: the response time of the track section to the occupation state, the time T of the computer interlocking device detecting the falling state of the stepless slow-release relay 区段采集-VIIB ; Among them, the response time of the track section to the occupied state includes: the fall time T of the AC binary two-position relay 70 / 240落下 , the falling time T of the stepless slow-release relay H310落下 The detection time T1 of the track section occupancy state can be expressed as: T1=T 70 / 240落下 +T H310落下 +T 区段采集-VIIB 。 10. The method for determining whether the computer interlocking device matches the maximum permissible speed of the train according to claim 9, characterized in that: The time for the on-board equipment 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 T of the on-board equipment to the locomotive signal. 机车信号 Among them, the time for the track circuit to send a locomotive signal includes: the time T when the track transfer relay is sucked up GCJ吸起 The time T2 when the on-board equipment receives the locomotive signal and responds can be expressed as: T2=T 70 / 240落下 +T H310落下 +T GCJ吸起 +T 机车信号 Where, T 70 / 240落下 is the fall time of the AC binary two-position relay, T H310落下 It is the falling time of the stepless slow-release relay.

11. The method for determining whether the computer interlocking device matches the maximum permissible speed of the train according to claim 5, characterized in that: Applied to the national railway conventional speed railway, when the interface between the track and the computer interlocking device adopts a microelectronic receiver combination mode, the microelectronic receiver combination mode includes: a microelectronic receiver, a stepless relay, and a track transfer relay installed in the same track section, the microelectronic receiver can detect the occupation status of the track section; the stepless relay is a track relay; the track transfer relay can control the transmission direction of the locomotive signal in the form of coded information; when the track section is in an occupied state, the microelectronic receiver first detects the occupation status of the track section, the stepless relay then detects the occupation status of the track section and falls, and the track transfer relay is sucked up to send a locomotive signal to the on-board equipment; at the same time, the computer interlocking device detects the falling state of the stepless relay; The detection time of the track section occupation state includes: the response time of the track section to the occupation state, the time T of the computer interlocking device detecting the falling state of the stepless slow-release relay 区段采集-VIIB ; Among them, the response time of the track section to the occupied state includes: the detection time T of the microelectronic receiver JXW25 , the falling time T of the stepless relay 1700落下 The detection time T1 of the track section occupancy state can be expressed as: T1=T JXW25 +T 1700落下 +T 区段采集-VIIB 。 12. The method for determining whether the computer interlocking device matches the maximum permissible speed of the train according to claim 11, characterized in that: The time for the on-board equipment 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 T of the on-board equipment to the locomotive signal. 机车信号 Among them, the time for the track circuit to send a locomotive signal includes: the time T when the track transfer relay is sucked up GCJ吸起 The time T2 when the on-board equipment receives the locomotive signal and responds can be expressed as: T2=T JXW25 +T 1700落下 +T GCJ吸起 +T 机车信号 Where, T JXW25 is the detection time of the microelectronic receiver, T 1700落下 It is the falling time of the stepless relay.

13. The method for determining whether the computer interlocking device matches the maximum permissible speed of the train according to claim 5, characterized in that: Applied to urban rail transit, the urban rail transit adopts an axle counting track circuit. When the axle counting device and the computer interlocking device are connected by a relay interface, the axle counting device detects the occupation status of the track section, and transmits the occupation status of the track section to the track relay set in the track section, so that the track relay falls; the relay acquisition module of the computer interlocking device collects the status of the track relay and transmits it to the regional controller; The occupancy status of the track section is recorded by the zone controller; The detection time of the track section occupancy status includes: the response time of the track section to the occupancy status, the time when the computer interlocking device detects the occupancy status of the track section, and the time when the computer interlocking device sends the track section occupancy status to the regional controller; wherein, the response time of the track section to the occupancy status includes: the falling time T of the track relay GJ落下 The detection time T1 of the track section occupancy state can be expressed as: T1=T GJ落下 +T 区段采集-VIIB Where, 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.

14. The method for determining whether the computer interlocking device matches the maximum permissible speed of the train according to claim 5, characterized in that: Applied to urban rail transit, the urban rail transit adopts an axle counting track circuit, when the axle counting device and the computer interlocking device are connected by means of network communication, the occupancy status of the track section is detected by the axle counting device; The computer interlocking device obtains the track occupancy status sent by the axle counting device through the network and transmits it to the area controller; The occupancy status of the track section is recorded by the zone controller; The detection time of the track section occupancy status includes: the response time of the track section to the occupancy status, the time when the computer interlocking device detects the occupancy status of the track section, and the time when the computer interlocking device sends the track section occupancy status to the regional controller; wherein, the response time of the track section to the occupancy status includes: the falling time T of the track relay GJ落下 The detection time T1 of the track section occupancy state can be expressed as: T1=T GJ落下 +T 区段采集-通信接口 Where, T 区段采集-通信接口 The time for the computer interlocking device to obtain the track section occupancy status through network communication and send it to the area controller.

15. The method for determining whether the computer interlocking device matches the maximum permissible speed of the train according to claim 5, characterized in that: Applied to urban rail transit, the urban rail transit adopts a 50Hz phase-sensitive track circuit. When the TCIM full electronic interface is adopted between the 50Hz phase-sensitive track circuit and the computer interlocking device, the computer interlocking device directly obtains the occupancy status of the track section through the track circuit electronic module TCIM; The detection time of the track section occupancy state includes: the time when the computer interlocking device detects the track section occupancy state, and the time when the computer interlocking device sends the track section occupancy state to the regional controller; the detection time T1 of the track section occupancy state can be expressed as: T1=T 区段采集-TCIM Where, T 区段采集-TCIM The time when the computer interlocking equipment collects and sends the track section occupancy status to the zone controller through the TCIM fully electronic interface.

16. The method for determining whether the computer interlocking device matches the maximum permissible speed of the train according to claim 5, characterized in that: Applied to urban rail transit, the urban rail transit adopts a 50Hz phase-sensitive track circuit. When the interface between the 50Hz phase-sensitive track circuit and the computer interlocking device adopts a binary two-position relay combination, the binary two-position relay combination includes: an AC binary two-position relay and a stepless relay installed in the same track section, the AC binary two-position relay and the stepless relay are both track relays for detecting and feeding back the occupation status of the track; when the track section is in an occupied state, the AC binary two-position relay and the stepless relay fall down in sequence, and the computer interlocking device collects the falling state of the stepless relay and transmits it to the regional controller; the regional controller records the occupation status of the track section; The detection time of the track section occupancy status includes: the response time of the track section to the occupancy status, the time when the computer interlocking device detects the occupancy status of the track section, and the time when the computer interlocking device sends the track section occupancy status to the regional controller; wherein, the response time of the track section to the occupancy status includes: the fall time T of the AC binary two-position relay 42 / 275落下 , the falling time T of the stepless relay 1700落下 The detection time T1 of the track section occupancy state can be expressed as: T1=T 42 / 275落下 +T 1700落下 +T 区段采集-VIIB Where, 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.

17. The method for determining whether the computer interlocking device matches the maximum permissible speed of the train according to claim 5, characterized in that: Applied to urban rail transit, the urban rail transit adopts a 50Hz phase-sensitive track circuit. When the interface between the 50Hz phase-sensitive track circuit and the computer interlocking device adopts a microelectronic receiver combination, the microelectronic receiver combination includes: a microelectronic receiver and a stepless relay installed in the same track section; the microelectronic receiver can detect the occupation status of the track section, and the stepless relay is a track relay; when the track section is in an occupied state, the microelectronic receiver first detects the occupation status of the track section, and the stepless relay then detects the occupation status of the track section and falls, and the computer interlocking device collects the falling status of the stepless relay and transmits it to the regional controller; the regional controller records the occupation status of the track section; The detection time of the track section occupancy status includes: the response time of the track section to the occupancy status, the time when the computer interlocking device detects the occupancy status of the track section, and the time when the computer interlocking device sends the track section occupancy status to the regional controller; wherein, the response time of the track section to the occupancy status includes: the time required for the microelectronic receiver to detect the occupancy status of the track section T WXJ50 , the time T for the stepless relay to fall 1700落下 The detection time T1 of the track section occupancy state can be expressed as: T1=T WXJ50 +T 1700落下 +T 区段采集-VIIB Where, 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 control system.

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