WO2020063336A1

WO2020063336A1 - Tuning and matching unit

Info

Publication number: WO2020063336A1
Application number: PCT/CN2019/105205
Authority: WO
Inventors: 杨轶轩; 刘瑞; 马斌; 曲博
Original assignee: 北京全路通信信号研究设计院集团有限公司
Priority date: 2018-09-28
Filing date: 2019-09-10
Publication date: 2020-04-02
Also published as: CN109278799A

Abstract

A tuning and matching unit comprises a casing. The casing is internally provided with a tuning and matching portion, a first tuning and matching current sensor, a second tuning and matching current sensor, a cable current sensor, a lightning protection unit module, and an outdoor monitoring extension unit. The first tuning and matching current sensor and the second tuning and matching unit current sensor each realize a data connection to two ends of the tuning and matching portion. The cable current sensor realizes a data connection to the tuning and matching portion. Two ends of the lightning protection unit module each realize a data connection to two ends of the tuning and matching portion. Each of the current sensors and the lightning protection unit module realize a data connection to the outdoor monitoring extension unit.

Description

Tuning and matching unit

This application claims the priority of application number "201811142100.2" and the invention name "a tuning and matching unit" filed in the Chinese Patent Office on September 28, 2018. As part of this application.

Technical field

The disclosure belongs to the technical field of rail transit, in particular to the field of rail transit signals, and particularly relates to a tuning and matching unit.

Background technique

The tuning and matching unit is used at the electrical insulation section and the mechanical insulation section of the track circuit, and is used to realize the isolation of signals in adjacent sections and the stable output of signals in this section.

When the existing tuning and matching unit is in a bad running state or malfunctions, because it does not have a monitoring function, it is impossible for the maintenance staff to know that there is a problem with the device. In the face of this situation, experienced maintenance personnel need to check the equipment in the track circuit system step by step to find that the equipment is faulty. And because the device is placed beside the outdoor track, the distance from the indoor is relatively long, the manual analysis and elimination process is relatively long.

At present, the operation status of the tuning and matching unit is monitored by means of an external monitoring extension and an external current sensor connected to the tuning and matching unit. However, the newly added external monitoring equipment does not have sufficient protection measures to effectively protect the complex outdoor environment such as strong vibration, heavy rain, sand and dust; and once the external assembled equipment fails, determine the failure point of the acquisition equipment in the outdoor field environment. Difficult to achieve. The external current sensor used is generally an open-loop type. It is susceptible to corrosion and degradation in the field vibration and humidity environment, and needs to be installed on the lead wire. It needs to be disassembled and replaced when the lead wire is replaced. The on-site workload increases and cannot be adapted to the on-site work.

Summary of the Invention

In view of the above problems, the present disclosure proposes a tuning and matching unit capable of adapting to a harsh external environment.

A tuning and matching unit, the tuning and matching unit comprises a box body, which is provided with a tuning and matching part, a first tuning and matching current sensor, a second tuning and matching current sensor, a cable current sensor, a lightning protection unit module and outdoor monitoring Extension, where:

The first tuning matching current sensor and the second tuning matching current sensor respectively realize data connection with both ends of the tuning matching part;

Data connection between the cable current sensor and the tuning and matching part;

Two ends of the lightning protection unit module are respectively connected to two ends of the tuning and matching part;

The first tuning matching current sensor, the second tuning matching current sensor, the cable current sensor, and the lightning protection unit module all realize a data connection with the outdoor monitoring extension.

Further, the box body includes an opening portion, a bottom portion opposite to the opening portion, and a side wall between the opening portion and the bottom portion, and the side surfaces of two adjacent side walls of the box body are respectively provided with the facing portions. A first protruding portion and a second protruding portion protruding outside the box body; the first protruding portion is used for placing an outdoor monitoring extension, and the second protruding portion is used for placing a terminal.

Further, the first tuned matching current sensor and the second tuned matching current sensor are respectively located on two sides of a second protruding portion inside the box body.

Further, the tuning and matching unit further includes a cover body capable of adaptively engaging with the opening portion of the box body.

Further, the cover has a card and a portion that engages with the box body.

Further, a pair of mounting brackets are respectively provided on the outer sides of two opposite side walls of the second protruding portion, and the bracket is provided with a mounting hole.

Further, the cable current sensor is placed inside the box near the outdoor monitoring extension.

further,

The first tuning and matching current sensor is used to monitor a signal current on the steel rail entering the tuning and matching unit;

The second tuning matching current sensor is used for monitoring a signal current flowing out of the tuning matching unit on the rail.

Further, the outdoor monitoring extension can apply a voltage to the lightning protection unit module, so that the relay in the base of the lightning protection unit is sucked up, and the outdoor monitoring extension can monitor whether the lightning protection unit is degraded by the state quantity of the relay.

Further, the first tuning matching current sensor, the second tuning matching current sensor, and the cable current sensor are full-closed loop current sensors.

The tuning and matching unit with built-in acquisition and communication functions provided by the present disclosure collects signal currents entering and exiting the tuning and matching unit and passes the information to the indoor monitoring host, which can be used in the track instead of the existing tuning and matching unit and external acquisition equipment. next to.

The tuning and matching unit of the present disclosure can improve the overall dustproof and waterproof performance of the tuning and matching unit to above IP65, and ensure the reliable operation of the device itself and the acquisition and communication functions. Real-time monitoring of the signal current into and out of the tuning and matching unit. When the tuning and matching unit runs poorly or fails, the indoor monitoring host can quickly locate the fault point by monitoring the abnormal changes in current, and guide maintenance personnel to quickly and accurately replace the tuning and matching unit. Troubleshoot. The current acquisition, outdoor acquisition extension and tuning and matching part are integrated into the same device, which is safer and more reliable in the outdoor complex railside environment without adding on-site maintenance objects. Other features and advantages of the present disclosure will be explained in the following description, and partly become apparent from the description, or be understood by implementing the present disclosure. The objects and other advantages of the present disclosure can be achieved and obtained by the structures indicated in the description, claims, and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solutions in the embodiments of the present disclosure or the prior art more clearly, the drawings used in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description These are some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative labor.

FIG. 1 shows a schematic diagram of a tuning matching unit monitoring system according to an embodiment of the present disclosure;

2 shows a monitoring principle structure diagram of a tuning matching unit monitoring system according to an embodiment of the present disclosure;

FIG. 3 shows an overall structural diagram of a tuning and matching unit box according to an embodiment of the present disclosure;

4 illustrates a top view of a box body of a tuning and matching unit box according to an embodiment of the present disclosure;

FIG. 5 illustrates a structural diagram of a terminal mounting portion of a tuning matching unit box according to an embodiment of the present disclosure.

detailed description

In order to make the objectives, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions in the embodiments of the present disclosure will be clearly and completely explained with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments These embodiments are part of, but not all of, the embodiments of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by a person having ordinary skill in the art without making creative efforts fall within the protection scope of the present disclosure.

FIG. 1 shows a system principle diagram of a tuning and matching unit according to an embodiment of the present disclosure. As shown in FIG. 1, the tuning and matching unit mainly includes a tuning and matching section and an outdoor monitoring extension that implements data connection with the tuning and matching section. The tuning and matching unit includes two tuning and matching current sensors (ie, a first tuning and matching current sensor and a second tuning and matching current sensor), a cable current sensor, a lightning protection unit, and a tuning and matching section. Wherein, two tuning matching current sensors are connected to both ends of the tuning matching part, a cable current sensor is connected to the tuning matching part, and two ends of the lightning protection unit module are respectively connected to both ends of the tuning matching part.

The tuning and matching unit also includes an outdoor monitoring extension, thereby forming a tuning and matching unit monitoring system. The two tuned matching current sensors, a cable current sensor and a lightning protection unit are respectively connected to the outdoor monitoring extension.

In the embodiment of the present disclosure, the tuning and matching current acquisition, the cable current acquisition, the outdoor monitoring extension, and the tuning and matching part are integrated and built in the same device, that is, in a tuning and matching unit. This design method makes it safer and more reliable in the outdoor complex railside environment without increasing on-site maintenance objects. Moreover, the overall dustproof and waterproof performance of the tuning and matching unit of the embodiment of the present disclosure is improved to above IP65, which ensures the reliable operation of the device itself and the acquisition and communication functions.

The two tuning and matching current sensors built in the tuning and matching unit are respectively used to monitor the signal current entering / exiting the tuning and matching unit on the rail; the cable current sensor built in the tuning and matching unit is used to monitor the in / out tuning and matching unit on the cable The two ends of the lightning protection unit are connected to the two ends of the tuning and matching part. The outdoor monitoring extension applies a voltage to the lightning protection unit module, so that the relay in the base of the lightning protection unit sucks up. The outdoor monitoring extension passes the status of the relay. To monitor whether the lightning protection unit is degraded.

Each of the above current sensors sends the obtained data to an outdoor monitoring extension. The outdoor monitoring extension sends the received data to the indoor monitoring host through the data channel. In this design mode, the operating status of the tuning and matching unit can be monitored in real time by the indoor monitoring host. The monitoring of the running state includes, for example, what kind of changes in the current monitored by each current sensor, what kind of running state the indoor monitoring host will determine; or how to comprehensively analyze the four current sensors to determine what kind of running state.

Through the tuning and matching unit according to the embodiment of the present disclosure, each of the current sensors described above can accurately capture the phase difference and current change rate between each acquisition point, perform calculations through an outdoor monitoring extension, and compare the cable current sensor and the rail lead current sensor. Phase difference and current change rate to determine the internal failure of the tuning and matching unit, compare the phase difference and current change rate between the 4 rail lead wire current sensors to determine the poor contact of the rail lead wire, and analyze the current change rate of the cable current sensor to determine Cable open-short fault.

In the embodiment of the present disclosure, each of the current sensors mentioned above can be a full-closed loop current sensor and is built into the tuning and matching unit, which is more reliable when running in a complex outdoor environment. The connection lines of each sensor and the acquisition extension are already inside the device when leaving the factory. After laying, no additional field wiring is needed, which solves the problems of the above-mentioned external outdoor acquisition equipment.

In this design manner of the embodiment of the present disclosure, the signal current entering and exiting the tuning and matching unit is monitored in real time. When the tuning and matching unit runs poorly or malfunctions, the indoor monitoring host can quickly locate the fault point by monitoring the abnormal changes in the current. Instruct maintenance personnel to quickly and accurately replace the tuning and matching unit, and troubleshoot.

FIG. 2 shows a monitoring principle structural diagram of a tuning and matching unit monitoring system according to an embodiment of the present disclosure. As shown in FIG. 2, two tuning and matching current sensors (indicated by ovals in the figure) are respectively connected to two rails, and the rails can be implemented respectively. Acquisition of the signal current entering the tuning matching unit and the signal current flowing out of the tuning matching unit.

FIG. 3 shows an overall structural diagram of a tuning and matching unit box according to an embodiment of the present disclosure. As shown in FIG. 3, the tuning and matching unit box includes a box body and a cover body that is adaptively fastened to the box body. The cover has a card and a portion that engages with the case. The tuning and matching unit according to the embodiment of the present disclosure can reduce the thickness of the box body, which can be reduced by 40 mm compared with the existing box body, which is more convenient to carry and install.

The box body has an opening corresponding to the cover body, a bottom portion opposite to the opening, and a side wall between the opening and the bottom portion. A protruding portion is respectively provided on two adjacent sides of the side wall of the box body, and the protruding portion is protruded toward the outside of the box body, as shown in FIG. 4, one of the protruding portions is a collection extension installation portion for Install an outdoor monitoring extension. The outdoor monitoring extension uses a plug-in monitoring extension; the other protruding part is a terminal installation part for installing various connection terminals. On both sides of the terminal mounting portion, there are portions where a tuning and matching current sensor can be placed. In the embodiment of the present disclosure, a built-in plug-in outdoor monitoring extension and a sensor cable are also built in. This design method can be more convenient to maintain and greatly improve reliability.

It can be seen from the structure diagram of FIG. 4 that the cable current sensor is placed inside the box near the installation portion of the acquisition extension, and the two tuned matching current sensors are located on both sides of the terminal mounting portion inside the box.

FIG. 5 shows a structural diagram of a terminal mounting portion of a tuning and matching unit box according to an embodiment of the present disclosure, and various terminals can be installed side by side in the terminal mounting portion of the box body as shown in FIG. 5. The space of the terminal block area is optimized, so that the wiring operation space is increased. The side wall of the terminal installation portion of the box body is provided with a through hole, and the through hole can be used to lead a connection cable such as a cable. A pair of mounting brackets are respectively arranged on the outer sides of two opposite side walls of the terminal mounting portion, and the brackets are provided with mounting holes.

The design structure of the tuning and matching unit box of the embodiment of the present disclosure enables the center of gravity to be reconfigured.

Although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or equivalently replace some of the technical features thereof; and these Modifications or replacements do not depart from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

A tuning and matching unit, the tuning and matching unit comprises a box body, which is provided with a tuning and matching part, a first tuning and matching current sensor, a second tuning and matching current sensor, a cable current sensor, a lightning protection unit module and outdoor monitoring Extension, where:

The first tuning matching current sensor and the second tuning matching current sensor respectively realize data connection with both ends of the tuning matching part;

Data connection between the cable current sensor and the tuning and matching part;

Two ends of the lightning protection unit module are respectively connected to two ends of the tuning and matching part;

The first tuning matching current sensor, the second tuning matching current sensor, the cable current sensor, and the lightning protection unit module all realize a data connection with the outdoor monitoring extension.
The tuning and matching unit according to claim 1, wherein:

The box body includes an opening portion, a bottom portion opposite to the opening portion, and a side wall between the opening portion and the bottom portion, and the sides of two adjacent side walls of the box body are respectively provided to the outside of the box body. A protruding first protruding portion and a second protruding portion; the first protruding portion is used for placing an outdoor monitoring extension, and the second protruding portion is used for placing a terminal.
The tuning and matching unit according to claim 2, wherein:

The first tuned matching current sensor and the second tuned matching current sensor are respectively located on two sides of a second protruding portion inside the box body.
The tuning and matching unit according to claim 2, wherein:

The tuning and matching unit further includes a cover body capable of adaptively engaging with the opening portion of the box body.
The tuning and matching unit according to claim 4, wherein:

The cover has a card and a portion that engages with the case.
The tuning and matching unit according to claim 2, wherein:

A pair of mounting brackets are respectively provided on the outer sides of two opposite side walls of the second protruding portion, and the brackets are provided with mounting holes.
The tuning and matching unit according to claim 1, wherein:

The cable current sensor is placed inside the box near the outdoor monitoring extension.
The tuning and matching unit according to any one of claims 1 to 7, wherein:

The first tuning and matching current sensor is used to monitor a signal current on the steel rail entering the tuning and matching unit;

The second tuning matching current sensor is used to monitor a signal current flowing out of the tuning matching unit on the steel rail.
The tuning and matching unit according to any one of claims 1 to 7, wherein:

The outdoor monitoring extension can apply a voltage to the lightning protection unit module, so that the relay in the base of the lightning protection unit is sucked up, and the outdoor monitoring extension can monitor whether the lightning protection unit is degraded by the state quantity of the relay.
The tuning and matching unit according to any one of claims 1 to 7, wherein:

The first tuning matching current sensor, the second tuning matching current sensor, and the cable current sensor are full-closed loop current sensors.