CN207336092U - City railway vehicle starting loop detection device - Google Patents

Abstract

A kind of city railway vehicle starting loop detection device, it is characterised in that：Including velocity radar, Hall sensor, test collecting unit, microprocessor, velocity radar is fixedly mounted on the downside of car body or side collection speed signal, Hall sensor is fixed on collection handle action signal at vehicle drivers handle position, velocity radar and Hall sensor are connected with test collecting unit, for giving the data feedback of collection to test collecting unit, collecting unit connection microprocessor is tested, microprocessor will be fed back to after data processing, final result is obtained by microprocessor.Then the information of collection is fed back to data acquisition unit, data acquisition unit obtains final result by microprocessor is fed back to after data processing by the utility model using Hall sensor collection driver's handle signal, while using radar collection speed signal.Guarantee test result precision is high, method is simple, testing ground equipment and wiring neat compact, test process realize sampling, display, the automation of storage and processing.

Description

City railway vehicle starting loop detection device

Technical field

The utility model belongs to trolley coach experimental test field, is related to acceleration detecting.

Background technology

At present, the starting loop of city railway vehicle is the technical indicator of vehicle it is particularly important that, it is necessary to accurate and efficient Ground is tested.Test device one kind of existing starting loop is to read speed using onboard installation radar, directly uses radar The response time for not accounting for traction instruction is surveyed, is unsatisfactory for completely embodying vehicle performance.Can also be direct by collecting computer Read the axle speed in vehicle network and traction level signal is calculated, this mode utilizes the feedback signal of train itself to be used for Verify acceleration, using the traction seat in the plane signal in network there is larger time delay, cause the starting loop tested The driving power that cannot truly reflect vehicle.

Utility model content

The purpose of this utility model is to provide a kind of test device of accurate, convenient rail vehicle starting loop, protects Confirmatory test result precision is high, method is simple, testing ground equipment and wiring neat compact, test process are realized and samples, shows, depositing Storage and the automation of processing.

To reach above-mentioned purpose, the utility model provides a kind of city railway vehicle starting loop detection device, its feature exists In：Including velocity radar, Hall sensor, test collecting unit, microprocessor, velocity radar be fixedly mounted on the downside of car body or Side gathers speed signal, and Hall sensor is fixed on collection handle action signal, velocity radar at vehicle drivers handle position It is connected with Hall sensor with test collecting unit, for giving the data feedback of collection to test collecting unit, test collection is single Member connection microprocessor, will feed back to microprocessor after data processing, final result is obtained by microprocessor.

Digital letter is formed by isolation circuit, level shifting circuit, imput output circuit inside the data acquisition unit Number board, isolation circuit are used to come external interference source and Hall sensor signal isolation, and level shifting circuit is used for will suddenly You are converted to the acceptable level signal of equipment at sensor level signal, and are transmitted to imput output circuit one, imput output circuit It is the interface circuit with FPGA, digital signal board is connected with embedded FPGA, finally by photoelectric switching circuit and microprocessor Device connects.

The utility model has the positive effect that：(1) handle signal is adopted using Hall sensor, considers the response time to flat The influence of equal acceleration, acquisition instructions signal immediately when handle acts.(2) using the velocity amplitude of radar feedback, car is reflected comprehensively Start-up course, with reference to Hall sensor acquisition instructions signal, the accelerating ability of Comprehensive Evaluation vehicle.Pass through microprocessor pair The data of collection carry out integrated treatment, without collection vehicle inner parameter, pass through the action signal of driver's handle and the car of train The fast accurate starting loop for obtaining vehicle, meets different automobile types acceleration test requirement.

Brief description of the drawings

Fig. 1 is the block diagram of the utility model；

Fig. 2 is collecting unit structure diagram.

Embodiment

With reference to Fig. 1, velocity radar 1 is connected with microprocessor 4, and Hall sensor 2 is connected with test collecting unit 3, then The data feedback of collection is subjected to Comprehensive Evaluation to microprocessor 4.Velocity radar 1 is fixedly mounted on the downside of car body or side, leads to 485 data/address bus are crossed to be connected with microprocessor 4.Hall sensor 2 is fixed at vehicle drivers handle position, ensures handle action When can collect handle action signal, the data feedback that velocity radar 1 and Hall sensor 2 are collected is single to test collection Data-signal is fed back to microprocessor 4 by member 3, test collecting unit 3 by optical fiber, and train accelerates on straight road during test, Measurement train starting velocity V1 (km/h) and tested speed V2 (km/h) and acceleration time Δ t (s), Δ t are to be moved since handle Reach the time difference of target velocity.The calculation formula of starting loop is as follows,

With reference to Fig. 2, number is formed by isolation circuit, level shifting circuit, imput output circuit inside the data acquisition unit Word signal board, isolation circuit come external interference source and Hall sensor signal isolation, and level shifting circuit passes Hall Sensor level signal is converted to the acceptable level signal of equipment, and imput output circuit is the interface circuit with FPGA.Numeral letter Number board is connected with embedded FPGA, is connected finally by photoelectric switching circuit with microprocessor, realizes Hall sensor letter Number conversion.

Claims (2)

1. A kind of 1. city railway vehicle starting loop detection device, it is characterised in that：Including velocity radar, Hall sensor, test Collecting unit, microprocessor, velocity radar is fixedly mounted on the downside of car body or side collection speed signal, Hall sensor are fixed Handle action signal, velocity radar and Hall sensor is gathered at vehicle drivers handle position to be connected with test collecting unit, For giving the data feedback of collection to test collecting unit, test collecting unit connection microprocessor, will feed back after data processing To microprocessor, final result is obtained by microprocessor.
2. 2. city railway vehicle starting loop detection device according to claim 1, it is characterised in that：The data acquisition Digital signal board is formed by isolation circuit, level shifting circuit, imput output circuit inside unit, isolation circuit is used for will be outer Portion's interference source and Hall sensor signal isolation come, and level shifting circuit is used to be converted to Hall sensor level signal to set Standby acceptable level signal, and imput output circuit one is transmitted to, imput output circuit is the interface circuit with FPGA, numeral Signal board is connected with embedded FPGA, is connected finally by photoelectric switching circuit with microprocessor.