CN206133276U - Increment formula electronic code odometer device based on PLC technique - Google Patents

Abstract

The utility model relates to an increment formula electronic code odometer device based on PLC technique, the device install on tram, the odometer device be connected with tram's wheel speed sensor, speed feedback voltage sensor and carbone controller respectively, the odometer device include incremental encoder module, AD conversion module, PLC module, increment formula impulse generator module, the PLC module be connected with incremental encoder module, AD conversion module, increment formula impulse generator module respectively, the incremental encoder module be connected with wheel speed sensor, AD conversion module be connected with speed feedback voltage sensor, increment formula impulse generator module be connected with carbone controller. Compared with the prior art, the utility model has the advantages of scalability strengthens greatly.

Description

Increment type electronic code mileage counter device based on PLC technology

Technical field

The utility model is related to a kind of increment type electronic code odometer, more particularly, to a kind of increasing based on PLC technology Amount formula electronic code mileage counter device.

Background technology

The vehicle control syetem (OBS) of train is and its important in tramcar signal system, tramcar train car Carry function include tramcar ATP train automatic protections and DAC trains auxiliary drive, regardless of whether be ATP functions or DAC functions, have relied on testing the speed and location information for train, are respectively necessary for using odometer and test the speed and beacon positioning.Wherein, Current train odometer is all monopolized by offshore company substantially, exist technology it is opaque, expensive, using underaction, The shortcomings of equipment loss height, poor expandability.Thus in actual use, a kind of odometer is difficult to match all types of cars On, and constantly adjustment is needed in actual installation use and is corrected.

In real use, for various reasons, the research and development to encoding odometer both at home and abroad are technically also deposited In following some problems：

1) extensibility：With the continuous increase of track traffic demand, different road conditions and circuit complexity also increasingly Height, therefore train, to encoding the demand of odometer also in continuous improvement, traditional Hall type coding odometer and photoelectric type is encoded Odometer is difficult in adapt to various different scenes.

2) versatility：Current track traffic is divided into state-owned railroads, urban track traffic, three aspects of tramcar, row The model and style of car is varied, and train also constantly increases to the interface requirements for encoding odometer, there is provided general electronics is compiled Code odometer is very necessary.

3) lossy：Traditional code odometer has the rotation and friction of mechanical parts, in the train operation accumulated over a long period, The situation that mechanical parts can wear and tear and corrode, not only influences whether the life-span of mechanical parts, and can further have influence on coding The precision and accuracy of odometer.

4) trackability：Traditional coding odometer when a failure occurs it, it is difficult to detect fault occurrence reason and time, Must be with special odometer test cell, Detection results are nor very good.

5) incremental conversion and record：Traditional coding odometer can only make collection to speed, without displacement record and Rate conversion function.

Utility model content

The purpose of this utility model is exactly the defect in order to overcome above-mentioned prior art to exist and provides a kind of based on PLC skills The increment type electronic code mileage counter device of art, on the experiential basis for having drawn existing state's outer coding odometer technical deficiency, The general PLC type incremental electronic code odometer of design, can provide surely for the collection of tramcar speed and location information Fixed reliable data source, and reliable technical support and convenient research platform are provided to tramcar cab signal system, Therefore tool is of great significance.

The purpose of this utility model can be achieved through the following technical solutions：

A kind of increment type electronic code mileage counter device based on PLC technology, the device is arranged on tramcar, described Mileage counter device wheel speed sensor respectively with tramcar, velocity feedback voltage sensor and Vehicle Controller connect Connect, described mileage counter device includes incremental encoder module, AD conversion module, PLC module, incremental pulse generator mould Block, described PLC module is connected respectively with incremental encoder module, AD conversion module, incremental pulse generator module, described Incremental encoder module be connected with wheel speed sensor, described AD conversion module connects with velocity feedback voltage sensor Connect, described incremental pulse generator module is connected with Vehicle Controller.

Described incremental encoder module is triple channel incremental encoder.

Described AD conversion module is provided with four input channels and 32 buffers.

Described PLC module includes CPU module.

Described CPU module includes controller, arithmetic unit and register.

Compared with prior art, by adopting PLC technology, the electronic code odometer can fully meet the utility model The speed of rail traffic signal system, the demand of station acquisition, the advantage and feature for possessing is as follows：

1) extensibility is greatly enhanced：PLC type incremental encodes odometer, and the elementary cell of composition is PLC module, therefore can To extend other modules for increasing difference in functionality, such as serial port module, mixed-media network modules mixed-media, all kinds of I/O modules, can conveniently adapt to not Carry out train to the more demands of odometer aspect；

2) good versatility：Because elementary cell uses the general PLC of industrial control field, therefore the scope of application Extensively, can be with common application in different vehicles, such as rail bicycle, subway, high ferro, inter-city passenger rail in terms of track traffic；

3) low-loss：Electronic code odometer there is no physical location and friction, the average life span of PLC itself For 20 years, therefore deterioration was very low, life-span length, reduces use cost；

4) trackability：PLC can be recorded to the data of all process, therefore when train speed collection is broken down When, the problem for occurring can be traced by PLC log recordings；

5) incremental conversion and record：PLC incremental electronic codes odometer can to occur pulse do accumulation calculating and Record, can be converted directly into displacement increment information and externally send, and can reduce the quantity of localizer beacon in track traffic；

6) install and safeguard convenient：PLC is easy for installation in industrial control field, and PLC type electronic odometer need not change train Gearing mechanism can conveniently install and use.

Description of the drawings

Fig. 1 is structural representation of the present utility model.

Specific embodiment

Below in conjunction with the accompanying drawings the utility model is described in detail with specific embodiment.The present embodiment is with the utility model Implemented premised on technical scheme, given detailed embodiment and specific operating process, but guarantor of the present utility model Shield scope is not limited to following embodiments.

As shown in figure 1, a kind of increment type electronic code mileage counter device based on PLC technology, the device is installed in rail On electric car, described mileage counter device wheel speed sensor 6 respectively with tramcar, velocity feedback voltage sensor 7 and Vehicle Controller 5 connects, and described mileage counter device includes incremental encoder module 1, AD conversion module 2, PLC module 3, increment Formula pulse generator module 4, described PLC module 3 respectively with incremental encoder module 1, AD conversion module 2, incremental pulse Generator module 4 connects, and described incremental encoder module 1 is connected with wheel speed sensor 6, described AD conversion module 2 It is connected with velocity feedback voltage sensor 7, described incremental pulse generator module 4 is connected with Vehicle Controller 5.

Each module is illustrated：

1st, incremental encoder：

Incremental encoder is the essence that the mechanical corner of axle is converted to a kind of methods such as employing photoelectricity data signal output Close sensor, operation principle is as follows：It is uniform on code-disc with there is the grating uniformly scribed on the pulse code-disc that rotating shaft is rotated Be dispersed with several printing opacity sections and shading section.The leading zero's that incremental encoder is not fixed, output be and turn The pulse that the increment at angle is directly proportional, needs to count umber of pulse with counter.When often turning over a transparent area, a pulse is issued by Signal, counter currency adds 1, increment of the count results corresponding to corner.

Except two pairs of photoelectric couplings for having binary channels incremental encoder inside selected triple channel incremental encoder Outside device, there is 1 printing opacity section in another passage of pulse code-disc, per 1 circle is turned, export 1 pulse, the pulse is referred to as Z phase zeros Digit pulse, is used as system reset signal, or origin, to reduce the accumulated error of measurement.If encoder exports pulse Cycle more than PLC the scan cycle time twice, the 0 of A phase pulse signals, 1 shape is judged by the rising edge in B phase pulses State, it can be determined that the direction of encoder rotation.

2nd, AD conversion module：

FX2N-4AD simulation special modules have four input channels.Input channel receives analog signal and converts thereof into number Word amount, this is referred to as A/D conversions.FX2N-4AD ultimate resolutions are 12.Led to based on the selection of the input/output of voltage or electric current Cross user's distribution to complete, available analog-value range is that -10V arrives 10VDC (resolution ratio 5mV), and/or 4 arrive 20mA, -20 arrive 20mA (resolution ratio：20 μ A) between .FX2N-4AD and FX2N master units by buffer storage exchange data, FX2N-4AD has 32 buffer storage (each 16) .FX2N-4AD and takes 8 points that FX2N extends general line. and this 8 points Input can be distributed into or .FX2N-4AD is exported and consume FX2N master units into the electric current of active expanding element 5V power supplys grain 30mA.

3rd, the CPU module of PLC：

CPU is made up of controller, arithmetic unit and register.These circuits are integrated on a single die.CPU is total by address Line, data/address bus are connected with I/O interface circuits.

CPU module is used to storing and performing PLC ladder diagrams, and according to the ladder diagram instruction of user computing and execution are carried out.When It is deposited in user program memory from the program of programmable device input, the function that then CPU is given according to system, user's journey Sequence translates into user's compiler that PLC inside is approved.Input state and input information are input into from input interface, CPU by it It is stored in operational data memory or is input into mapping register.Then data and program are organically combined together by CPU. As a result in being stored in output mapping register or operational data memory, output interface, control peripheral driver are then output to.

4th, pulse generator module：

Using the transistor IO high frequency outputs of PLC, additional power supply all the way is producing digital pulse forms.The first of PLC Individual scan period, M1 normally-closed contacts closure, so M1 coils can obtain electric；Second scan period, because in a upper scan period Ml coils it is electric, so the normally-closed contact of M1 disconnects, therefore make M1 coil losing electricities.Therefore, Ml coils obtain the electric time for one Scan period.M1 coils constantly continuously electric, dead electricity, its normally opened contact also therewith constantly continuously closure, disconnect, just produce Pulsewidth is the continuous impulse signal output of scan period, is applicable to the collection with tramcar vehicular speeds signal.

The above, specific embodiment only of the present utility model, but protection domain of the present utility model do not limit to In this, any those familiar with the art can readily occur in various in the technical scope that the utility model is disclosed Equivalent modification or replacement, these modifications or replace all should be covered within protection domain of the present utility model.Therefore, this practicality New protection domain should be defined by scope of the claims.

Claims (5)

1. a kind of increment type electronic code mileage counter device based on PLC technology, the device is arranged on tramcar, its feature Be, described mileage counter device respectively with the wheel speed sensor of tramcar, velocity feedback voltage sensor and vehicle-mounted Controller connects, and described mileage counter device includes that incremental encoder module, AD conversion module, PLC module, incremental pulse are sent out Raw device module, described PLC module connects respectively with incremental encoder module, AD conversion module, incremental pulse generator module Connect, described incremental encoder module is connected with wheel speed sensor, described AD conversion module is passed with velocity feedback voltage Sensor connects, and described incremental pulse generator module is connected with Vehicle Controller.

2. a kind of increment type electronic code mileage counter device based on PLC technology according to claim 1, its feature exists In described incremental encoder module is triple channel incremental encoder.

3. a kind of increment type electronic code mileage counter device based on PLC technology according to claim 1, its feature exists In described AD conversion module is provided with four input channels and 32 buffers.

4. a kind of increment type electronic code mileage counter device based on PLC technology according to claim 1, its feature exists In described PLC module includes CPU module.

5. a kind of increment type electronic code mileage counter device based on PLC technology according to claim 4, its feature exists In described CPU module includes controller, arithmetic unit and register.