CN2868797Y

CN2868797Y - Series closed-loop coded transmitting detection system

Info

Publication number: CN2868797Y
Application number: CN 200620003742
Authority: CN
Inventors: 安海君; 刘伟; 任国桥; 张开锋; 李建春; 殷慧媛; 刘锐东
Original assignee: BEIJING QUANLU COMMUNICATION SIGNAL RESEARCH DESIGN INST
Current assignee: Beijing Quanlu Communication Signals Research and Design Institute Co., Ltd.
Priority date: 2006-02-28
Filing date: 2006-02-28
Publication date: 2007-02-14
Anticipated expiration: 2016-02-28

Abstract

The utility model relates to a serial-connection closed-loop telegraphic code sending and detecting system. A receiving loop and at least one serial-connected isolating circuit are arranged. The serial-connected isolating circuit comprises two circuit tends. One loop consists of a successively serial-connected transformer, an outdoor isolating and a protecting box and a track receiver while the other loop consists of a successively serial-connected transformer and an outdoor isolating and protecting box. The two transformers are separately connected to the two ends of the track circuit. Two serial-connected isolators are also arranged, both ends of each are connected to the two transformers. The utility model, with detection of telegraphic code through the receiving loop, provides reliable ground information for vehicular equipments so as to ensure driving safety and improve transport capacity. The utility model realizes active vehicle signal and ensure the accuracy of the signal, moreover increases the transmission distance of telegraphic track circuit and eliminates or reduce s division of telegraphic track circuit.

Description

The series system closed loop coding sends checking system

Technical field

The utility model relates to a kind of railway information safety apparatus, and particularly a kind of series system closed loop coding sends checking system.

Technical background

For guaranteeing speed-raising back safety of railway transportation, in-station codification information should be able to continuously send to locomotive, makes locomotive can receive coding information at any time reliably.Present practicable terms of settlement adopts the coding mode that superposes in advance piecemeal exactly.

Piecemeal in advance during signaling, train all has two sections in a flash at signaling near the successor, for preventing that the sending of adjacent orbit, receiving end from mixing mutually and the inlet current value of train head place section satisfies the requirement of cab signal receiving sensitivity, so when the design control circuit, must guarantee to send box each road of arbitrary moment to a section signaling.

At present, domestic railway busy section all adopts pre-stack coding mode.Pre-stack coding mainly is divided into:

Continuous exchange of track circuit (being commonly called as 480 track circuits) homemade 8,18 information, the ZPW-2000 series shift frequency coding that superposes in advance is applied in non-electrified sections in standing.

Homemade 8,18 information of the pre-stack of 25Hz phase detecting track circuit in standing; France UM71, the coding of homemade WG-21A, ZPW-2000 series shift frequency are mainly used in electrified sections.

Existing in-station codification is owing to be that two technology stacks are synthetic, there is two-layer skin problem, the locomotive signal information that system sends only is to be superimposed upon on the track circuit, as shown in fig. 1, signal transmits along the direction of arrow, and for open loop, and whether its information has sent on the track really, do not obtain actv. and detect, existing detection alarm circuit just detects whether normal operation of transmitting apparatus itself, and whether can not detect whole system operation intact.Along with train running speed further improves, lean on the demonstration of ground signal to be not enough to guarantee traffic safety, under the imperative situation of equipment main body cab signal, existing station coding technology can not guarantee the traffic safety of train in the station.

The utility model content

The utility model has overcome above-mentioned shortcoming, provides the few series system closed loop coding of a kind of safety and reliability height, design and construction investment to send checking system.

The technical scheme in the invention for solving the technical problem is: comprise sending the loop, described transmission loop links to each other with track circuit, comprise the outdoor isolator that links to each other in turn, indoor lightning protection device, indoor isolator and track receptor, described indoor isolator is also adjusted box and the receiving end control capsule that is connected in series successively by receiving end, send adjuster, the coding transmitter sends the detection dish with coding and links to each other, described outdoor isolator is connected with described track circuit, also be in parallel simultaneously with a voltage transformer, also comprise the receiving loop and at least one the series connection buffer circuit that link to each other with described track circuit respectively, described receiving loop comprises another the outdoor isolator that links to each other in turn, another indoor lightning protection device, voltage transformer is adjusted in another indoor isolator and isolation, described another indoor isolator also adjusts box by sending end and series connected successively sending end is adjusted box, detecting adjuster links to each other with closed loop detection dish, described another outdoor isolator links to each other with described track circuit, also be parallel with another voltage transformer simultaneously, described series connection buffer circuit is divided into two-way, wherein one the tunnel comprises voltage transformer in sequential series, outdoor isolating and protecting box and track receptor, another road comprises voltage transformer in sequential series and outdoor isolating and protecting box, described two voltage transformers are connected across the two ends of described track circuit respectively, also comprise two series connection isolators, the two ends of each series connection isolator are connected across respectively between described two voltage transformers.

Also can be provided with building-out capacitor between the receiving end of described track circuit and the sending end.

When described system sends checking system for 25Hz phase detecting track circuit stack ZPW-2000 closed loop coding, between transmission loop, receiving loop and series connection buffer circuit and described track circuit, can be connected with impedance transformer respectively, and the two ends of described impedance transformer are connected across the two ends of described track circuit respectively.

Voltage transformer that links to each other with described outdoor isolator in described transmission loop and the receiving loop and the voltage transformer in the described series connection buffer circuit all can be the 25Hz track transformer.

Also can be connected with a 25Hz protection box in the described transmission loop between indoor isolator and the track receptor.

The two ends of the series connection isolator in the described series connection buffer circuit can be connected across the two ends that link to each other with same track circuit in two branch roads.

When described system is a continuous exchange of track circuit stack ZPW-2000 closed loop coding when sending checking system, voltage transformer in the described transmission loop and the voltage transformer that is connected with in the series connection buffer circuit branch road of track receptor can be relay transformer; The voltage transformer that voltage transformer in the described receiving loop and another series connection are isolated in the branch road is the 50Hz track transformer.

The two ends of the series connection isolator in the described series connection buffer circuit can be connected across the two ends that link to each other with the relative orbit circuit in two branch roads.

The utility model is by being provided with receiving loop and at least one series connection buffer circuit, described series connection buffer circuit is divided into two-way, wherein one the tunnel comprises voltage transformer in sequential series, outdoor isolating and protecting box and track receptor, another road comprises voltage transformer in sequential series and outdoor isolating and protecting box, described two voltage transformers are connected across the two ends of described track circuit respectively, also comprise two series connection isolators, the two ends of each series connection isolator are connected across respectively between described two voltage transformers.The utility model is carried out closed loop by receiving loop to the coding signal and is detected; provide the failure-free terrestrial information to mobile unit; guarantee traffic safety and improve transport capacity; the realization body cab signal; and guarantee not misoperation track relay of locomotive signal information; and improved coded track circuit transmission length, eliminate or reduce coded track circuit and cut apart.Simultaneously, in the station, do not need to change existing track circuit standard, utilize equipment such as special-purpose isolation, detection to realize the locomotive signal information that superposes on the station track circuit, to satisfy the needs of train speed supervision and speed control system, improve the safety and the reliability of signal system, reduce construction investment.

Description of drawings

Fig. 1 is the schematic circuit diagram of embodiment 1

Fig. 2 is the schematic circuit diagram of embodiment 2

The specific embodiment

Embodiment 1, as shown in fig. 1, series system 25Hz phase detecting track circuit stack ZPW-2000 closed loop coding detects the schematic diagram of transmission system, comprise that the receiving loop that a transmission loop that is used to send the coding signal, are used to receive the closed loop feedback signal also has two to be used for abbreviated signal code information, the series connection buffer circuit of isolating track circuit and traction current information simultaneously, described two series connection buffer circuits are identical.

Comprise bonded assembly impedance transformer BE in turn in the described transtation mission circuit ₂₅1, outdoor isolator WGL1, indoor lightning protection device NFL1, indoor isolator NGL1,25Hz protection box HF ₃1 and track receptor JRJC1, described outdoor isolator WGL1 and a 25Hz track transformer BG ₂₅1 is in parallel, and described indoor isolator NGL1 also is connected with receiving end in turn and adjusts box RT1, sends adjuster ZPW-T1, coding transmitter ZPW-F1 and coding transmission detection dish ZPW-J1, described impedance transformer BE ₂₅1 former limit is connected in parallel on the two ends of described track circuit, and secondary is connected among the described outdoor isolator WGL1.

Comprise the 25Hz impedance transformer BE that links to each other in turn in the described receiving loop ₂₅2, voltage transformer BMT2, described outdoor isolator WGL2 and a track transformer BG are adjusted in outdoor isolator WGL2, indoor lightning protection device NFL2, indoor isolator NGL2 and isolation ₂₅2 are in parallel, and described indoor isolator NGL2 also is connected in series with sending end simultaneously and adjusts box RT1, detects adjuster ZPW-T2 and closed loop detection dish ZPW-P2, described impedance transformer BE ₂₅2 former limit is connected in parallel on the two ends of described track circuit, and secondary is connected among the described outdoor isolator WGL2.

Described series connection buffer circuit is divided into two-way, and wherein one the tunnel comprises 25Hz impedance transformer BE in sequential series ₂₅3,25Hz track transformer BG ₂₅3, outdoor isolating and protecting box WGFH3 and 25Hz protection box HF ₃3, another road comprises 25Hz impedance transformer BE in sequential series ₂₅4,25Hz track transformer BG ₂₅4 and outdoor isolating and protecting box WGFH4, wherein, described 25Hz impedance transformer BE ₂₅3 and BE ₂₅4 are connected in parallel on the two ends of described track circuit respectively, also have two series connection isolator CGL1 and CGL2, are connected across the two ends that link to each other with same track circuit in described two branch roads respectively.

The coding signal by wayside equipment via sending the loop, the coding signal is sent by described coding transmitter ZPW1, be transferred to train with cab signal stack back by track circuit again, again by closed loop detection dish detected above-mentioned signal whether sent on the locomotive in the described receiving loop, thereby the realization closed loop coding is monitored in real time, when coding breakdown of equipment or transmission path fault, can send warning, and cut-out ground signal machine circuit, realize coding and electric horn interlocking apparatus interlocking, commander's train stops, and guarantees traffic safety.Superpose pre-signaling technology and existing track circuit technology of coding constitutes an integral body, makes its safety system with track circuit and coding dual-use function, realizes the closed loop inspection of coding.

Simultaneously, when described closed loop coding track circuit surpasses 300m, between the receiving end of track circuit and sending end building-out capacitor is set, the capacity of described building-out capacitor (μ F), electric capacity spacing (m), electric capacity quantity (individual) press preferred parameter design.Described capacitance is selected according to carrier frequency:

1. be limited to 1700Hz, 2000Hz, capacitance: 80 μ F

2. be limited to 2300Hz, 2600Hz, capacitance: 60 μ F

The installation of building-out capacitor is the method according to the spaced set building-out capacitor.Its concrete grammar is as follows:

Equidistantly

Quantity: ∑=N+A

N: hundred meters figure places

A: individual position, pick up figure place be 0 o'clock be 0

Individual position, pick up figure place be not 0 o'clock be 1

Δ is represented equidistant length; Track circuit two ends and first electric capacity distance are Δ/2.

Permissible error ± 0.5m is installed.

Embodiment 2 as shown in Figure 2, be series system continuous exchange of track circuit (claiming 480 track circuits again) stack ZPW-2000 closed loop coding schematic circuit diagram, comprise that the receiving loop that a transmission loop that is used to send the coding signal, are used to receive the closed loop feedback signal also has two to be used for abbreviated signal code information, the series connection buffer circuit of isolating track circuit and traction current information simultaneously, described two series connection buffer circuits are identical.

Comprise in turn the outdoor isolator FWGL1 of bonded assembly, indoor lightning protection device NFL1, indoor isolator FNGL1 in the described transmission loop and be connected track receptor JRXC1, described outdoor isolator WGL1 and a track transformer BZ ₄1 is in parallel, described indoor isolator FNGL1 also is connected with receiving end in turn and adjusts box RT1, sends adjuster ZPW-T1, coding transmitter ZPW-F1 and coding transmission detection dish ZPW-J1, and two input ends of described outdoor isolator FWGL1 are connected across between the described track circuit.

Comprise outdoor isolator FWGL2, the indoor lightning protection device NFL2 that links to each other in turn, indoor isolator NGL2 in the described receiving loop and isolate adjustment voltage transformer BMT2, described outdoor isolator WGL2 and a 50Hz track transformer BG ₂₅2 are in parallel, and described indoor isolator NGL2 also is connected in series with sending end simultaneously and adjusts box RT2, detects adjuster ZPW-T2 and closed loop detection dish ZPW-P2, and two input ends of described outdoor isolator WGL2 are connected across described track circuit two ends.

Described series connection buffer circuit is divided into two-way, and wherein one the tunnel comprises relay transformer BZ in sequential series ₄3, outdoor isolating and protecting box WGFH3 and track receptor JZXC3, another road comprises 50Hz track transformer BG in sequential series ₁4 and outdoor isolating and protecting box WGFH4, wherein, described relay transformer BZ ₄3 and 50Hz track transformer BG ₁4 are connected in parallel on the two ends of described track circuit respectively, also have the two ends of two series connection isolator CGL1 and CGL2 to be connected across the two ends that link to each other with the relative orbit circuit in two branch roads respectively.

Also be connected with building-out capacitor in the described track circuit, connection mode is identical with embodiment 1 with capacity.

More than tandem closed loop coding provided by the utility model detected transmission system be described in detail, used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.

Claims

1. a series system closed loop coding sends checking system, comprise and send the loop, described transmission loop links to each other with track circuit, comprise the outdoor isolator that links to each other in turn, indoor lightning protection device, indoor isolator and track receptor, described indoor isolator is also adjusted box and the receiving end control capsule that is connected in series successively by receiving end, send adjuster, the coding transmitter sends the detection dish with coding and links to each other, described outdoor isolator is connected with described track circuit, also be in parallel simultaneously with a voltage transformer, it is characterized in that: also comprise the receiving loop and at least one the series connection buffer circuit that link to each other with described track circuit respectively, described receiving loop comprises another the outdoor isolator that links to each other in turn, another indoor lightning protection device, voltage transformer is adjusted in another indoor isolator and isolation, described another indoor isolator also adjusts box by sending end and series connected successively sending end is adjusted box, detecting adjuster links to each other with closed loop detection dish, described another outdoor isolator links to each other with described track circuit, also be parallel with another voltage transformer simultaneously, described series connection buffer circuit is divided into two-way, wherein one the tunnel comprises voltage transformer in sequential series, outdoor isolating and protecting box and track receptor, another road comprises voltage transformer in sequential series and outdoor isolating and protecting box, described two voltage transformers are connected across the two ends of described track circuit respectively, also comprise two series connection isolators, the two ends of each series connection isolator are connected across respectively between described two voltage transformers.

2. series system closed loop coding according to claim 1 sends checking system, it is characterized in that: also be provided with building-out capacitor between the receiving end of described track circuit and the sending end.

3. series system closed loop coding according to claim 1 and 2 sends checking system, it is characterized in that: when described system sends checking system for 25Hz phase detecting track circuit stack ZPW-2000 closed loop coding, between transmission loop, receiving loop and series connection buffer circuit and described track circuit, be connected with impedance transformer respectively, and the two ends of described impedance transformer are connected across the two ends of described track circuit respectively.

4. series system closed loop coding according to claim 3 sends checking system, it is characterized in that: the voltage transformer and the voltage transformer in the described series connection buffer circuit that link to each other with described outdoor isolator in described transmission loop and the receiving loop all are the 25Hz track transformer.

5. series system closed loop coding according to claim 3 sends checking system, it is characterized in that: also be connected with a 25Hz protection box in the described transmission loop between indoor isolator and the track receptor.

6. series system closed loop coding according to claim 3 sends checking system, and it is characterized in that: the two ends of the series connection isolator in the described series connection buffer circuit are connected across the two ends that link to each other with same track circuit in two branch roads.

7. series system closed loop coding according to claim 1 and 2 sends checking system, it is characterized in that: when described system was continuous exchange of track circuit stack ZPW-2000 closed loop coding transmission checking system, the voltage transformer in the described transmission loop was a relay transformer with the series connection buffer circuit branch road that is connected with the track receptor; The voltage transformer that voltage transformer in the described receiving loop and another series connection are isolated in the branch road is the 50Hz track transformer.

8. series system closed loop coding according to claim 7 sends checking system, and it is characterized in that: the two ends of the series connection isolator in the described series connection buffer circuit are connected across the two ends that link to each other with the relative orbit circuit in two branch roads.