CN206171361U - Road train's wheel quick test volume and transmission system - Google Patents
Road train's wheel quick test volume and transmission system Download PDFInfo
- Publication number
- CN206171361U CN206171361U CN201621038502.4U CN201621038502U CN206171361U CN 206171361 U CN206171361 U CN 206171361U CN 201621038502 U CN201621038502 U CN 201621038502U CN 206171361 U CN206171361 U CN 206171361U
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- China
- Prior art keywords
- wheel speed
- wheel
- transmission system
- combination according
- truck combination
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Abstract
The utility model discloses a road train's wheel quick test volume and transmission system, including photoelectric encoder for with the rotational speed of wheel with round fast pulse signal's form output a to singlechip, the singlechip for fast pulse signal gathers in real time and resolves to the wheel of photoelectric encoder output, wireless communication module for transmit singlechip collection and the fast value of the wheel that resolves to the host computer through wireless mode, CAN bus interface for transmit singlechip collection and the fast value of the wheel that resolves to the host computer through physical circuit. The utility model discloses a fast collection and processing of wheel to CAN bus and two kind wireless transmission modes have, not only can the precision measurement wheel fast for road train's braking harmony provides the detection foundation, can also be synchronous will take turns the fast host computer that conveys, convenient, practical, and have stronger interference killing feature.
Description
Technical field
The utility model is related to truck combination brakes, especially a kind of wheel speed measurement of truck combination and transmission system
System.
Background technology
The measuring wheel speed of truck combination is the pith of whole measuring wheel speed and Transmission system, and harvester is by wheel
Rotating speed is changed into output of pulse signal, and single-chip microcomputer is acquired calculating so as to obtain wheel speed by the pulse signal to exporting.Mesh
The wheel speed measurement of front truck combination mainly passes through magnetoelectric sensor.Magnetoelectric sensor is typically secured on wheel, due to vapour
The car team car factor shaken in process of being expert at is made between the gear ring and magnetic coil of the magnetoelectric sensor together rotated with wheel
Gap is continually changing, strong influence certainty of measurement.Can be produced using identical processing method when the rotating speed of wheel is different
Very big measure error, it is therefore desirable to which the change of method is measured according to the difference of wheel speed.And data have been only capable of
The transmission of line can cause the loss of data because of the abrasion of data wire.
Utility model content
Utility model purpose：For the defect that above-mentioned prior art is present, the utility model aims to provide a kind of automobile row
The wheel speed measurement and Transmission system of car.
Technical scheme：A kind of wheel speed measurement and Transmission system of truck combination, including：
Photoelectric encoder, for the rotating speed of wheel to be exported to single-chip microcomputer in the form of wheel speed pulse signal；
Single-chip microcomputer, the wheel speed pulse signal for exporting to photoelectric encoder carries out Real-time Collection and resolving；
Wireless communication module, for wirelessly by single-chip microcomputer gather and resolve wheel speed value transmit to host computer；
CAN interface, for the wheel speed value that single-chip microcomputer is gathered and resolved being transmitted to host computer by physical circuit.
Further, the photoelectric encoder is connected with a sensor for gathering wheel speed.
Further, the photoelectric encoder selects 1024 line coding devices.
Further, signal conditioning circuit is also associated between the photoelectric encoder and single-chip microcomputer, for photoelectricity to be compiled
The impulse waveform of code device output carries out shaping, including electric capacity, light emitting diode and Schmidt trigger.
Further, the light emitting diode is 1N4148 diodes, and the Schmidt trigger is 74LS14.
Further, the wireless communication module is ZIGBEE wireless communication modules.
Further, the ZIGBEE wireless communication modules adopt SZ05-STD chips.
Further, the wireless communication module includes RS232 serial ports.
Further, the single-chip microcomputer is C8051F040.
Beneficial effect：The utility model includes the collection and process of wheel speed, and with CAN and wireless two kinds of transmission sides
Formula, the brake coordination for truck combination provides detection foundation, not only can accurate measurement wheel speed, moreover it is possible to which synchronous passes wheel speed
Host computer is sent to, it is convenient, practical, and have stronger antijamming capability.
Description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is relative type motor photoelectric encoder output waveform figure；
Fig. 3 is the structure chart of signal conditioning circuit；
Fig. 4 is the structure chart of wireless communication module；
Fig. 5 is the structure chart of CAN interface circuit diagram；
Fig. 6 (a), Fig. 6 (b) are the structure charts of power circuit diagram；
Fig. 7 is main program flow chart.
Specific embodiment
Below by a most preferred embodiment and combine accompanying drawing the technical program is described in detail.
It is as shown in figure 1, the wheel speed measurement and Transmission system of a kind of truck combination including photoelectric encoder, single-chip microcomputer, wireless
Communication module and CAN interface, photoelectric encoder is used to the rotating speed of wheel is exported to list in the form of wheel speed pulse signal
Piece machine；Single-chip microcomputer is used to carry out Real-time Collection and resolving to the wheel speed pulse signal of photoelectric encoder output, and single-chip microcomputer is
C8051F040；Wireless communication module is used to wirelessly the wheel speed value that single-chip microcomputer is gathered and resolved is transmitted to host computer；
CAN interface is used to the wheel speed value that single-chip microcomputer is gathered and resolved is transmitted to host computer by physical circuit.
Fig. 2 is the waveform output of relative type motor photoelectric encoder, is made up of three-phase：The two-phase of 90 ° of difference is exported during rotation just
Hand over signal A phases, B phases, the waveform Z phases exported when encoder often rotates a circle.The signal frequency of A phases and B phases is proportional to wheel
Wheel speed, measures its signal frequency and understands vehicle wheel rotational speed by conversion.For accurate measurement wheel speed, the system from resolution ratio compared with
1024 high line coding devices, both wheel often rotate a circle, A phases export 1024 square waves with B phases, can release wheel wheel speed and A
Mutually the measuring wheel speed method conventional with the relation of B phase signals frequencies has 2 kinds：Measuring Frequency Method and measuring period method, Measuring Frequency Method is by surveying
Calculating wheel speed, its computing formula is the number of the wheel speed pulse signal in amount preset time：
R is radius of wheel in above formula, and n is pulse number, and △ t are time of measuring interval.
Measuring period method is that, by measuring the method that one pulse length of encoder obtains wheel speed, its computing formula is
In above formula R be radius of wheel, t be counter when base, base number when m is.
It is more smart using the measurement data obtained using Measuring Frequency Method when the rotating speed of wheel is very fast for two kinds of measuring methods
Really, the wheel speed value for arriving when the rotating speed of wheel is relatively low using measuring period method is more accurate.Therefore when measuring wheel speed module works
Two kinds of measuring methods should be used in combination the accuracy for ensureing result.
In Fig. 3, photoelectric encoder is connected with a sensor for gathering wheel speed, as measuring wheel speed module, automobile
Train is during being tested the speed, and measuring wheel speed module is with wheel high-speed rotation and defeated due to due to temperature, vibrations
Go out waveform shake to occur and distorts.Therefore modelled signal modulate circuit carries out shaping to waveform.Signal conditioning circuit by electric capacity,
1N4148 diodes and 74LS14 (Schmidt trigger) are constituted.1N4148 diodes are in parallel with electric capacity, and 1N4148 diodes rise
To the effect of voltage stabilizing, electric capacity makes voltage regulation result more smooth.Output square-wave signal passes twice through 74LS14 carries out shaping to signal
The burr distortion and the shake of square wave of square wave edges are removed, makes square-wave signal more smooth.Pass twice through reverser to cause through whole
The signal of shape circuit output is same with original phase place.The signal exported by Y6 through light emitting diode with connect so that when there is letter
Light emitting diode is lighted and plays suggesting effect during number output.
In Fig. 4, wireless communication module is ZIGBEE wireless communication modules, using the SZ05-STD along boat science and technology as wireless
Communication chip, also dependent on needing from other wireless communication modules, circuit is mainly SZ05- to those skilled in the art in figure
STD designs corresponding peripheral circuit, including power circuit, indicator lamp and the RS232 serial ports with C8051F040 communications, refers to
Show that lamp is lighted when data are transmitted.Data in single-chip microcomputer through resolving are entered by the TX1 that P0.1 mouths send into SZ05-STD
Row transmission, the data that SZ05-STD is received are sent to the P0.1 mouths of single-chip microcomputer by TX2.Radio communication is represented when D8LED is bright
Module normal operation, representation module network is normal when D9LED is bright, represents that transport module goes wrong when D10LED is bright.
In Fig. 5, the extension and edition upgrading of this practical systemic-function in future for convenience devise CAN interface.
CAN (Controller Area Network, controller local area network) bus is defeated by two of CAN transceiver interface chip
Go out to hold CANH and CANL to be connected with physical bus, CAN transceiver adopts SN65HVD230 chips.SN65HVD230 chips have
Three kinds of working methods, standby mode is in as VRs >=0.75Vcc, fast mode is in during VRs≤1V, when outer meeting resistance exists
Slop control pattern is in during 10k Ω to 100k Ω.Can by have single-chip microcomputer P4.2 export signal and external resistor come
The voltage for adjusting VRS is allowed to be operated in different patterns.
Fig. 6 (a), Fig. 6 (b) are the power unit schematic diagrams of the utility model system, and+5V voltages are by outside in Fig. 6 (a)
Battery is supplied, and it is that wireless transmitter module and signal conditioning circuit are powered that the positive pole of battery is connected to the voltage of the exportable+5V of U1.
+ 5V the voltages exported by Fig. 6 (a) in Fig. 6 (b) are powered as the voltage of input and output+3.3V for C8051F040 type single-chip microcomputers.
+ the 9V in Header2 in Fig. 6 (a) is used for the power supply of photoelectrical coupler.Because the power supply of photoelectric coupled circuit must isolate, although
The complexity of interface circuit is increased, but improves the stability and security of node.
It is the program flow diagram of the system in Fig. 7, is developed using C language, the program is not belonging to protection of the present utility model
Scope, the function self-developing program that those skilled in the art can be realized according to the utility model, the program in the present embodiment
Function includes two parts：A part is the collection and storage of wheel speed signal, is on the other hand that the wheel speed signal of storage is passed through into nothing
Line mode is sent to main frame.Main program completes first the initialization of serial ports, interruption etc., sentences then according to the flag bit flag for receiving
Disconnect collection of beginning and be also off collection.If starting to gather signal, then Open Timer device, PCA interruptions, start to gather wheel speed number
According to, and select Measuring Frequency Method or side periodic method to carry out measuring wheel speed according to the size of wheel speed, the wheel speed value being collected is stored up
Deposit；If being off gathering signal, timer is closed, PCA interrupts, and stops wheel speed data acquisition, then judge whether to receive and send out
Flag bit is sent, if receiving transmission flag bit, is just come the data read-out of storage, be wirelessly sent to main control computer,
If not receiving transmission flag bit, program stopped.
The above is only preferred embodiment of the present utility model, it should be pointed out that：For the ordinary skill people of the art
For member, on the premise of without departing from the utility model principle, some improvements and modifications can also be made, these improvements and modifications
Also should be regarded as protection domain of the present utility model.
Claims (9)
1. the wheel speed measurement and Transmission system of a kind of truck combination, it is characterised in that include：
Photoelectric encoder, for the rotating speed of wheel to be exported to single-chip microcomputer in the form of wheel speed pulse signal；
Single-chip microcomputer, the wheel speed pulse signal for exporting to photoelectric encoder carries out Real-time Collection and resolving；
Wireless communication module, for wirelessly by single-chip microcomputer gather and resolve wheel speed value transmit to host computer；
CAN interface, for the wheel speed value that single-chip microcomputer is gathered and resolved being transmitted to host computer by physical circuit.
2. a kind of wheel speed measurement and Transmission system of truck combination according to claim 1, it is characterised in that the photoelectricity
Encoder is connected with a sensor for gathering wheel speed.
3. a kind of wheel speed measurement and Transmission system of truck combination according to claim 1, it is characterised in that the photoelectricity
Encoder selects 1024 line coding devices.
4. a kind of wheel speed measurement and Transmission system of truck combination according to claim 1, it is characterised in that the photoelectricity
Signal conditioning circuit is also associated between encoder and single-chip microcomputer, the impulse waveform for photoelectric encoder to be exported carries out whole
Shape, including electric capacity, light emitting diode and Schmidt trigger.
5. the wheel speed measurement and Transmission system of a kind of truck combination according to claim 4, it is characterised in that described luminous
Diode is 1N4148 diodes, and the Schmidt trigger is 74LS14.
6. the wheel speed measurement and Transmission system of a kind of truck combination according to claim 1, it is characterised in that described wireless
Communication module is ZIGBEE wireless communication modules.
7. the wheel speed measurement and Transmission system of a kind of truck combination according to claim 6, it is characterised in that described
ZIGBEE wireless communication modules adopt SZ05-STD chips.
8. the wheel speed measurement and Transmission system of a kind of truck combination according to claim 1, it is characterised in that described wireless
Communication module includes RS232 serial ports.
9. a kind of wheel speed measurement and Transmission system of truck combination according to claim 1, it is characterised in that the monolithic
Machine is C8051F040.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621038502.4U CN206171361U (en) | 2016-09-05 | 2016-09-05 | Road train's wheel quick test volume and transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621038502.4U CN206171361U (en) | 2016-09-05 | 2016-09-05 | Road train's wheel quick test volume and transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206171361U true CN206171361U (en) | 2017-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621038502.4U Expired - Fee Related CN206171361U (en) | 2016-09-05 | 2016-09-05 | Road train's wheel quick test volume and transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206171361U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108417003A (en) * | 2018-04-26 | 2018-08-17 | 华南理工大学 | A kind of data acquisition device based on electric bicycle |
| CN108489735A (en) * | 2018-03-28 | 2018-09-04 | 吉林大学 | Double trailer train model stability experimental rig based on the theory of similarity and method |
| CN109738664A (en) * | 2019-01-30 | 2019-05-10 | 华南农业大学 | A kind of the agricultural machinery track drive wheel speed wireless measuring system and measurement method of waterproof |
| CN110712607A (en) * | 2019-10-29 | 2020-01-21 | 一汽解放汽车有限公司 | Acceleration and angular velocity measuring system for vehicle |
| CN114137349A (en) * | 2021-12-02 | 2022-03-04 | 奇瑞商用车（安徽）有限公司 | Wheel speed generating device for automobile development and test |
-
2016
- 2016-09-05 CN CN201621038502.4U patent/CN206171361U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489735A (en) * | 2018-03-28 | 2018-09-04 | 吉林大学 | Double trailer train model stability experimental rig based on the theory of similarity and method |
| CN108417003A (en) * | 2018-04-26 | 2018-08-17 | 华南理工大学 | A kind of data acquisition device based on electric bicycle |
| CN109738664A (en) * | 2019-01-30 | 2019-05-10 | 华南农业大学 | A kind of the agricultural machinery track drive wheel speed wireless measuring system and measurement method of waterproof |
| CN110712607A (en) * | 2019-10-29 | 2020-01-21 | 一汽解放汽车有限公司 | Acceleration and angular velocity measuring system for vehicle |
| CN114137349A (en) * | 2021-12-02 | 2022-03-04 | 奇瑞商用车（安徽）有限公司 | Wheel speed generating device for automobile development and test |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170517 Termination date: 20180905 |