CN202541634U - Steering wheel angle detecting device for commercial vehicle - Google Patents
Steering wheel angle detecting device for commercial vehicle Download PDFInfo
- Publication number
- CN202541634U CN202541634U CN2012200840373U CN201220084037U CN202541634U CN 202541634 U CN202541634 U CN 202541634U CN 2012200840373 U CN2012200840373 U CN 2012200840373U CN 201220084037 U CN201220084037 U CN 201220084037U CN 202541634 U CN202541634 U CN 202541634U
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- angle
- steering wheel
- detecting device
- main control
- control chip
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Abstract
The utility model relates to a steering wheel angle detecting device for a commercial vehicle. The steering wheel angle detecting device comprises a driving gear and a driven gear, wherein the driving gear is in coaxial arrangement on a steering pipe post of a steering wheel, the driven gear is in engagement transmission with the driving gear, an angle transmission shaft is coaxially and fixedly connected onto a rotating shaft of the driven gear, the other end of the angle transmission shaft is provided with a detecting device, the detecting device comprises an angle detecting sensor, the signal output end of the angle detecting sensor is connected with the signal input end of a main control chip, the signal output end of the main control chip is in two-way connection with a communication circuit, and the power of the main control chip, the angle detecting sensor and the communication circuit is respectively supplied by a power supply circuit. The steering wheel angle detecting device for the commercial vehicle has the advantages that the structure is simple, the reliability is high, the environment influence factor is small, the angle change of the steering wheel can be precisely detected in real time, the current angle value of the steering wheel is output through a communication bus, and the angle of the steering wheel and the rotating angle of the angle detecting device are in one-to-one correspondence.
Description
Technical field
The utility model relates to a kind of steering wheel rotation angle sensing device, relates in particular to a kind of commercial vehicle/comm..vehicle steering wheel rotation angle sensing device.
Background technology
Along with the continuous application of vehicle electronicsization, intellectualized technology, steering wheel angle has become the sampled signal of many active safety systems.Commercial vehicle/comm..vehicle is transplanted the ripe active safety technology (like car light follow-up system, electronics VSC, intelligent parking system etc.) of manned vehicle; With safety and the traveling comfort that improves self, so the importance that the commercial vehicle/comm..vehicle steering wheel angle detects receives the concern of car load and parts factory.Present stage, the vehicle steering detecting sensor mainly contains photoelectric encoder, Hall element and other magneticss etc., the detecting device complex design, and reliability is low.
The utility model content
The purpose of the utility model provides a kind of commercial vehicle/comm..vehicle steering wheel rotation angle sensing device, to solve existing detecting device complex design, the problem that reliability is low.
For realizing above-mentioned purpose; The utility model adopts following technical scheme: a kind of commercial vehicle/comm..vehicle steering wheel rotation angle sensing device; This device comprise on the coaxial steering column that is arranged on bearing circle driving gear and with the driven gear of this driving gear engaged transmission; Coaxially in the rotating shaft of said driven gear be fixed with an angle transmission shaft; The other end of angle transmission shaft is provided with detecting device, and said detecting device comprises the angle detecting sensor that is used for detection angles transmission shaft rotational angle, and the signal output part of said angle detecting sensor is connected with the signal input part of main control chip; The signal output part of said main control chip is connected with communicating circuit is two-way, and said main control chip, angle detecting sensor and communicating circuit are supplied power by power circuit.
Said driving gear and driven gear are finishing bevel gear cuter.
The commercial vehicle/comm..vehicle steering wheel rotation angle sensing device of the utility model is simple in structure, reliability is high, environmental impact factor is little; Can detect the variation of steering wheel angle in real time, accurately; Through the current angle value of communication bus outbound course dish; Steering wheel angle is corresponding one by one with the angle of rotation of angle detection device, even if chaufeur is operated bearing circle under the electrifying condition not installing, angle detection device sensor angle of rotation also rotates with bearing circle; After device powers on, can accurately detect the bearing circle rotational angle.
Description of drawings
Fig. 1 is the schematic diagram of the utility model;
Fig. 2 is the structural representation of the utility model embodiment;
Fig. 3 is the main program flow chart of the utility model angle detection device.
The specific embodiment
Be illustrated in figure 1 as the schematic diagram of the utility model commercial vehicle/comm..vehicle steering wheel rotation angle sensing device embodiment; Solid line representes that power supply flows among the figure; Dotted line expression signal (machinery) flows to, can know by figure, this device comprise on the coaxial steering column 2 that is arranged on bearing circle 1 driving gear and with the driven gear of this driving gear engaged transmission; Coaxially in the rotating shaft of driven gear be fixed with an angle transmission shaft 4; The other end of angle transmission shaft 4 is provided with detecting device 5, and detecting device 5 comprises the angle detecting sensor that is used for detection angles transmission shaft 4 rotational angles, and the signal output part of angle detecting sensor is connected with the signal input part of main control chip; The signal output part of main control chip is connected with communicating circuit is two-way, and main control chip and communicating circuit are supplied power by power circuit.
As shown in Figure 2; Driving gear and driven gear in the present embodiment are finishing bevel gear cuter; Bearing circle 1 coaxial steering column 2 upper ends that are assemblied in; The coaxial lower end that is arranged at steering column 2 of the driving gear that cone gear is 3 groups, and its pivot angle and bearing circle pivot angle are proportional, realize that bearing circle rotates the Motion Transmission at the spatial vertical axle.In addition, the driven gear of conical insert wheels 3 is connected with detecting device 5 through angle transmission shaft 4.
Detecting device 5 mainly is made up of angle detecting sensor, and detecting sensor adopts non-contact angle sensor, realizes the transformation of bearing circle anglec of rotation mechanical signal to electric signal output.Gear cluster changes bearing circle angle of rotation (left and right sides maximum angle 1800 degree, a left side 900 degree and right 900 degree) into-70 spends to 70 degree, realizes that the anglec of rotation is corresponding one by one; Angle detecting sensor is spent to the angle value of 70 degree-70 and is changed the magnitude of voltage output of 0.5V to 4.5V into, passes through signal conditioning circuit again, and output 0.25V is to the conditioning magnitude of voltage of 2.25V.
Power circuit, main control chip and communicating circuit are formed the angular detection circuit, realize the software processes and the transmission of steering wheel angle.The radical function of power circuit is to realize isolated from power, for main control chip, angle detecting sensor, communicating circuit and detecting device provide operating voltage, for main control chip provides detection voltage.The main control chip radical function is the conditioning magnitude of voltage of detection angles detecting sensor output; Through sequential operation, confirm steering wheel angle; Send data (steering wheel angle value) to communicating circuit; Receive the bus return message, judge whether bus communication is normal.The communicating circuit radical function is the instruction that receives main control chip, and the back bearing circle angle value of will encoding sends to bus; Receive bus message, supply controller to handle.
As shown in Figure 3, the principle of work and the step of the utility model commercial vehicle/comm..vehicle steering wheel rotation angle sensing device are following:
(1) device powers on, main control chip acquisition angles detecting sensor output voltage values V
In1, deposit this value in angle register 1;
(2) main control chip detection angles detecting sensor output voltage values V once more
In2
(3) relatively whether twice detected steering wheel angle value be identical for main control chip, judges that chaufeur has or not steering wheel rotation.If detected twice steering wheel angle value is identical, main control chip is forbidden communicating circuit and subprogram work (the steering wheel angle value is not sent); The 10ms that delays time then, execution in step 2.If twice detected twice steering wheel angle value is different, main control chip makes communicating circuit and subprogram work, sends current steering wheel angle value and (calculates angle detecting sensor output voltage values V
In2The value that obtains); The 10ms that delays time then upgrades execution in step (2) with the value of angle register 1;
(4) the detecting device periodical duty is in the state of (1)-(3).
The advantage of the utility model commercial vehicle/comm..vehicle steering wheel rotation angle sensing device is following: the bearing circle angle of rotation is corresponding one by one with the detecting device angle of rotation, and any moment can both accurately be detected the current steering angle of bearing circle; Detecting device adopts low-power consumption, high reliability design; This device minimum detection angle is 2 degree (the maximum anglec of rotation reaches 1800 degree about bearing circle), detects error less than 1 ‰; Promote the intelligent degree of commercial vehicle/comm..vehicle; Need not change conventional commercial car bearing circle mechanism,, can judge the chaufeur driving intention, improve the safety of driver's operation in conjunction with other system.
Combine accompanying drawing that the utility model has been carried out the exemplary description above; Obviously the bevel gear set transmission device that adopted of the utility model is merely a kind of in the adoptable transmission device; Adopt method of the utility model and various improvement and the replacement that design is carried out structure; Or directly apply to other occasion without improvement, all within the protection domain of the utility model.
Claims (2)
1. commercial vehicle/comm..vehicle steering wheel rotation angle sensing device; It is characterized in that: this device comprise on the coaxial steering column that is arranged on bearing circle driving gear and with the driven gear of this driving gear engaged transmission; Coaxially in the rotating shaft of said driven gear be fixed with an angle transmission shaft; The other end of angle transmission shaft is provided with detecting device; Said detecting device comprises the angle detecting sensor that is used for detection angles transmission shaft rotational angle; The signal output part of said angle detecting sensor is connected with the signal input part of main control chip, and the signal output part of said main control chip is connected with communicating circuit is two-way, and said main control chip, angle detecting sensor and communicating circuit are supplied power by power circuit.
2. commercial vehicle/comm..vehicle steering wheel rotation angle sensing device according to claim 1 is characterized in that: said driving gear and driven gear are finishing bevel gear cuter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200840373U CN202541634U (en) | 2012-03-08 | 2012-03-08 | Steering wheel angle detecting device for commercial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200840373U CN202541634U (en) | 2012-03-08 | 2012-03-08 | Steering wheel angle detecting device for commercial vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202541634U true CN202541634U (en) | 2012-11-21 |
Family
ID=47162308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200840373U Expired - Fee Related CN202541634U (en) | 2012-03-08 | 2012-03-08 | Steering wheel angle detecting device for commercial vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202541634U (en) |
-
2012
- 2012-03-08 CN CN2012200840373U patent/CN202541634U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20190308 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |