CN112858843A

CN112858843A - Acquisition and analysis device for monitoring bow net pressure hard points on line

Info

Publication number: CN112858843A
Application number: CN202110319055.9A
Authority: CN
Inventors: 李维婉; 魏源; 李相泉
Original assignee: Tianjin Yichang Electrical Equipment Co ltd
Current assignee: Tianjin Yichang Electrical Equipment Co ltd
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2021-05-28

Abstract

The invention discloses a collecting and analyzing device for monitoring a pantograph-catenary pressure hard point on line, which adopts the core technology that a self-made pressure hard point sensor and integrated data collecting equipment are adopted to collect the pressure value and the hard point value of a subway line contact net and a roof pantograph in real time; the locomotive failure-free safe operation monitoring method plays a role in monitoring the locomotive failure-free safe operation. The on-line monitoring pantograph is divided into 5 modules including a pantograph body, a pressure sensor, a hard point sensor, a signal analysis box, a display terminal and the like. When the rail locomotive runs, the pantograph and the contact network generate motion friction, pressure hard point values from the pantograph to the contact network are converted into +/-5V or 4-20mA standard analog signals through the pressure hard point sensor, the pressure hard point values are analyzed and calculated through the signal analysis box, the working quality of the contact network and the pantograph is judged through big data integration comparison, various data are finally displayed to a driver cab, and prejudgment is convenient to check and make. The invention can also be used for displaying real-time numerical values on the operation screen of the ground console.

Description

Acquisition and analysis device for monitoring bow net pressure hard points on line

Technical Field

The invention discloses a collecting and analyzing device for monitoring a pantograph-catenary pressure hard point on line, and relates to analysis and identification of the working conditions of a catenary and a pantograph.

Background

Electric traction is adopted for urban railways, electric energy is obtained from a contact net or a contact rail through devices such as a pantograph when a rail locomotive runs, uninterrupted and absolutely stable electric energy obtaining must be guaranteed, otherwise the performance of the track locomotive running and a train electric driving system is affected, driving safety is endangered, and the cost of daily maintenance is greatly increased. Therefore, the method for guaranteeing the good and stable current collection of the train under the running condition of the rail locomotive is a key technology of the urban electrified railway.

Disclosure of Invention

The invention aims to solve the problem that a rail locomotive acquires real-time state information of a pantograph-catenary during running and monitors the safe running of the locomotive.

The current collection of the hard point of online monitoring contact net pressure aims at developing a pressure acceleration monitoring and collecting system suitable for a pantograph on a running rail transit vehicle. The acquisition system belongs to the category of vehicle health management systems, and comprises network voltage and current monitoring of a high-speed pantograph. And analyzing and processing the later-stage monitoring data to obtain the actual working state of the high-speed pantograph. Through carrying out horizontal and vertical analysis to the monitored data, can obtain the job stabilization nature of train operation, the influence of train to regional power supply network, the problem that probably exists in the line construction, season and temperature variation to the health status of power supply networks such as influence of bow net contact. The railway construction unit can finely adjust the line conveniently and accumulate experience in subsequent construction, reference is provided for train operators, and corresponding responses such as high-speed pantograph height can be adjusted in time according to temperature changes. In the monitoring process, when abnormal conditions occur, the intelligent monitoring system provides warning services for the cab and the ground monitoring center in time.

The invention has the beneficial effects that: the intelligent pantograph monitoring refers to the monitoring of pantograph-catenary relation performance, and carries out logic judgment and analysis according to the characteristics of signals collected by pressure and hard point sensors, so as to give the effect of pantograph-catenary contact performance. For example, when the pressure value and the hard point value are detected to be abnormal, the generation of pantograph tripping, net hanging, arc discharge and the like is judged, and the coordinates of the pantograph tripping and arc discharge points are determined through algorithm analysis and data transmission, so that maintenance bases are provided for maintenance personnel, and the maintenance cost is reduced. By implementing the project scheme, the analysis of the health states of the contact network and the pantograph can be completed; monitoring the performance of the pantograph; pressure, hard spot anomaly location on-line coordinates.

Drawings

Other features, objects and advantages of the present invention will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.

Fig. 1 is a schematic structural and outline diagram of an acquisition and analysis device for on-line monitoring of a bow net pressure hard spot according to the invention.

Fig. 2 is a schematic view of the installation position of the collecting and analyzing device for on-line monitoring of the bow net pressure hard point on the locomotive.

Fig. 3 is a schematic structural and outline diagram of a pressure sensor 2 of an acquisition and analysis device for on-line monitoring of a bow net pressure hard spot according to the present invention.

Fig. 4 is a schematic structural and outline diagram of a hard point sensor 3 of an acquisition and analysis device for on-line monitoring of a bow net pressure hard point.

Fig. 5 is a schematic structural and outline diagram of a signal analysis box 4 of an acquisition and analysis device for on-line monitoring of a bow net pressure hard point according to the present invention.

In the figure: the pantograph type pantograph control system comprises a pantograph body 1, a pressure sensor 2, a hard spot sensor 3, a signal analysis box 4 and a display terminal 5.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.

As shown in fig. 1-5, the pantograph body 1 contacts with a contact network, pressure values and hard point values of the pantograph and the contact network are converted into standard signals through a pressure sensor 2 and a hard point sensor 3 which are arranged on a pantograph head, the standard signals are processed and analyzed through a signal analysis box 4, functional prompts such as health/fault are given, and the functional prompts are displayed on a cab screen through a display terminal 5; the display terminal 5 can be expanded (a PC or a display screen and the like) to transmit real-time data to the ground/a console and the like, so that a dispatcher and the like can conveniently master the real-time running condition of the vehicle; finally, the rail locomotive is ensured to work normally and run safely.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a collection analytical equipment of on-line monitoring bow net pressure hard point, its structure includes pantograph body (1), pressure sensor (2), hard point sensor (3), signal analysis case (4), display terminal (5), its characterized in that: the pantograph body (1) is a pantograph produced by Tianjin Yichang electrical equipment, Inc., or a pantograph which is additionally provided with monitoring equipment after the existing locomotive is modified; the surfaces of the pressure sensor (2) and the hard point sensor (3) are insulated, the IP grade is IP67, the optical fiber transmission and signal analysis box (4) is integrally insulated, and the IP grade is IP 67; the display terminal (5) is placed indoors (a driver cab or a ground control room).

2. The device for collecting and analyzing the hard spot of the bow net pressure on line according to claim 1, wherein: the pressure sensor (2) and the hard point sensor (3) are installed at the pantograph head part of the pantograph, are insulated and waterproof, and directly or indirectly acquire the pressure values and the hard point values of the pantograph and the contact network.

3. The device for collecting and analyzing the hard spot of the bow net pressure on line according to claim 1, wherein: the signal analysis box (4) is arranged outside the pantograph and on the top of the pantograph, is insulated and waterproof, and converts signals collected by the pressure sensor (2) and the hard spot sensor (3) into standard analog signals (+/-5V or 4-20 mA).

4. The device for collecting and analyzing the hard spot of the bow net pressure on line according to claim 1, wherein: the display terminal (5) is arranged outside the pantograph, in the roof or on the ground, analyzes and calculates data transmitted by the signal analysis box (4), and identifies the working conditions of the contact network and the pantograph.