CN202547590U - Steering wheel rotating angle measurement sensor and relevant measurement system - Google Patents
Steering wheel rotating angle measurement sensor and relevant measurement system Download PDFInfo
- Publication number
- CN202547590U CN202547590U CN2012200894015U CN201220089401U CN202547590U CN 202547590 U CN202547590 U CN 202547590U CN 2012200894015 U CN2012200894015 U CN 2012200894015U CN 201220089401 U CN201220089401 U CN 201220089401U CN 202547590 U CN202547590 U CN 202547590U
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- magnet
- gear ring
- hall chip
- steering wheel
- chip
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Abstract
The utility model relates to a steering wheel rotating angle measurement sensor which comprises a first tooth ring, a second tooth ring, a third tooth ring, a first magnet, a second magnet, a first hall chip and a second hall chip, wherein the first tooth ring and the second tooth ring are respectively meshed with the third tooth ring; the first magnet and the second magnet are respectively embedded in the first tooth ring and the second tooth ring; the third tooth ring, the first magnet and the second magnet are arranged in a rotatable manner; and the first hall chip and the second hall chip are positioned outside the first tooth ring, the second tooth ring and the third tooth ring and respectively spaced from the first magnet and the second magnet. Preferably, the clearance between the first hall chip and the first magnet is 2 mm; and the clearance between the second hall chip and the second magnet is 2 mm. The utility model also provides a relevant steering wheel rotating angle measurement system. The steering wheel rotating angle measurement sensor is ingenious in design, simple in structure, favorable for use of users, extremely high in reliability and suitable for large-scale popularization and application.
Description
Technical field
The utility model relates to the outer corner measurement technical field, and particularly the steering wheel angle field of measuring technique specifically is meant a kind of steering wheel angle survey sensor and related measuring system.
Background technology
Sensor is being played the part of important role in automobile modernization system.Along with the raising of society to the demand of safety, energy-saving and environment-friendly automobile, more motor vehicle equipment electric direction varying device (EPS) and ESP (ESP) and other intelligence control systems.Effective operation of these automobile electric control systems needs the steering angle signal.To this, following several kinds of angular transducers are arranged at present:
1) metering system has the sensor that uses differential transformer type and potentiometer formula principle of work, in use has low precision, and the response time is waited deficiency slowly, to the requirement of installation also than higher.
2) communication mode, the user is through reading voltage signal, though serial data solves the collecting work of angle information.But voltage signal is subject to disturb, and serial communication lacks monitoring equipment and software intuitively, and the user just can not confirm whether the angle information of gathering in the crops is timely, and is correct.
Along with contactless Hall The Application of Technology is more and more wider, and the CAN bus is occupied dominant position in automobile electronics.Hope to propose a kind of steering wheel angle survey sensor and related measuring system, thereby can make the user easy to use, possess very high reliability again.
The utility model content
The purpose of the utility model is to have overcome above-mentioned shortcoming of the prior art; A kind of steering wheel angle survey sensor and related measuring system are provided; This steering wheel angle survey sensor design is ingenious, simple for structure; Can make the user easy to use, possess very high reliability again, be suitable for large-scale promotion application.
To achieve these goals; First aspect at the utility model; A kind of steering wheel angle survey sensor is provided; Be characterized in; Comprise first gear ring, second gear ring, the 3rd gear ring, first magnet, second magnet, first Hall chip and second Hall chip, said first gear ring and said second gear ring mesh with said the 3rd gear ring respectively, are embedded with said first magnet and said second magnet in said first gear ring and said second gear ring respectively; Said the 3rd gear ring, said first magnet and said second magnet are all rotatable to be provided with, and said first Hall chip and said second Hall chip all are positioned at said first gear ring, said second gear ring and said the 3rd gear ring and also are provided with at interval with said first magnet and said second magnet respectively outward.
Preferably, said first Hall chip and said first magnet is 2mm at interval, and said second Hall chip and said second magnet is 2mm at interval.
Preferably, said steering wheel angle survey sensor also comprises electronic circuit board, and said first Hall chip is installed on the said electronic circuit board and with said electronic circuit board circuit with said second Hall chip and is connected.
Preferably; Said steering wheel angle survey sensor also comprises shell; Said first gear ring, said second gear ring, said the 3rd gear ring, said first magnet, said second magnet, said first Hall chip and said second Hall chip all are positioned at said shell, and said the 3rd gear ring, said first magnet and said second magnet are all rotatable to be installed in the said shell.
Second aspect at the utility model; A kind of steering wheel angle measuring system is provided; Be characterized in; Comprise CAN chip, corner computing chip and above-mentioned steering wheel angle survey sensor, said first Hall chip is connected with said corner computing chip circuit with said CAN chip with said second Hall chip respectively, and said CAN chip is connected with said corner computing chip circuit.
Preferably, said steering wheel angle measuring system also comprises storer, and said memory circuitry connects said CAN chip.
More preferably, said storer is an electricity erasable memorizer.
Preferably, said steering wheel angle measuring system also comprises power supply, and said power supply circuit respectively connects said first Hall chip, said second Hall chip, said corner computing chip and said CAN chip.
The beneficial effect of the utility model specifically is:
1, the steering wheel angle survey sensor of the utility model comprises first gear ring, second gear ring, the 3rd gear ring, first magnet, second magnet, first Hall chip and second Hall chip; Said first gear ring and said second gear ring mesh with said the 3rd gear ring respectively; Be embedded with said first magnet and said second magnet in said first gear ring and said second gear ring respectively, said the 3rd gear ring, said first magnet and said second magnet are all rotatable to be provided with, and said first Hall chip and said second Hall chip all are positioned at said first gear ring, said second gear ring and said the 3rd gear ring and also are provided with at interval with said first magnet and said second magnet respectively outward; The 3rd gear ring is installed on the steering column during measurement; Steering column is fixedly connected with vehicle steering, and the 3rd gear ring rotates and drives first gear ring and the rotation of second gear ring, and then drives first magnet and the rotation of second magnet; Measure by first Hall chip and second Hall chip; Just can obtain current bearing circle through algorithm computation and rotate absolute angle, design ingeniously, simple for structure, can make the user easy to use; Possess very high reliability again, be suitable for large-scale promotion application.
2, the steering wheel angle measuring system of the utility model comprises CAN chip, corner computing chip and above-mentioned steering wheel angle survey sensor; Said first Hall chip is connected with said corner computing chip circuit with said CAN chip with said second Hall chip respectively; Said CAN chip is connected with said corner computing chip circuit; The corner computing chip receives the data of first Hall chip and second Hall chip, and the corresponding algorithm of process obtains the angle value of the actual rotation of bearing circle, communicates by letter with extraneous through the CAN bus then; Design ingenious, simple for structure; Can make the user easy to use, possess very high reliability again, be suitable for large-scale promotion application.
Description of drawings
Fig. 1 is the structural representation of a specific embodiment of the steering wheel angle survey sensor of the utility model.
Fig. 2 is the structural representation of a specific embodiment of the steering wheel angle measuring system of the utility model.
Fig. 3 is the workflow synoptic diagram of specific embodiment shown in Figure 2.
Embodiment
In order more to be expressly understood the technology contents of the utility model, the special following examples of lifting specify.
See also shown in Figure 1; The steering wheel angle survey sensor of the utility model comprises first gear ring 1, second gear ring 2, the 3rd gear ring 3, first magnet 4, second magnet 5, first Hall chip 6 and second Hall chip 7; Said first gear ring 1 meshes with said the 3rd gear ring 3 respectively with said second gear ring 2; Be embedded with said first magnet 4 and said second magnet 5 in said first gear ring 1 and said second gear ring 2 respectively; Said the 3rd gear ring 3, said first magnet 4 and said second magnet 5 are all rotatable to be provided with, and it is outer and be provided with at interval with said first magnet 4 and said second magnet 5 respectively that said first Hall chip 6 and said second Hall chip 7 all are positioned at said first gear ring 1, said second gear ring 2 and said the 3rd gear ring 3.
Said first Hall chip 6 is confirmed according to actual conditions with said first magnet, 7 spacing distances; In the specific embodiment of the utility model; Said first Hall chip 6 and said first magnet, 4 interval 2mm, said second Hall chip 7 and said second magnet, 5 interval 2mm.
The electronic circuit board (not shown) can comprise; Can not comprise yet; In the specific embodiment of the utility model; Said steering wheel angle survey sensor also comprises electronic circuit board, and said first Hall chip 6 is installed on the said electronic circuit board and with said electronic circuit board circuit with said second Hall chip 7 and is connected.
The shell (not shown) can comprise; Can not comprise yet; Preferably; Said steering wheel angle survey sensor also comprises shell, and said first gear ring 1, said second gear ring 2, said the 3rd gear ring 3, said first magnet 4, said second magnet 5, said first Hall chip 6 and said second Hall chip 7 all are positioned at said shell, said the 3rd gear ring 3, said first magnet 4 and said second magnet 5 is all rotatable is installed in the said shell.In the specific embodiment of the utility model, electronic circuit board also is arranged in shell.
See also shown in Figure 2; The steering wheel angle measuring system of the utility model comprises CAN chip, corner computing chip and above-mentioned steering wheel angle survey sensor; Said first Hall chip 6 is connected with said corner computing chip circuit with said CAN chip with said second Hall chip 7 (being the sensor chip among Fig. 2) respectively, and said CAN chip is connected with said corner computing chip circuit.
For timely storage relevant information, see also shown in Figure 2ly, in the specific embodiment of the utility model, said steering wheel angle measuring system also comprises storer, said memory circuitry connects said CAN chip.
Said storer can be any suitable storage device, and in the specific embodiment of the utility model, said storer is electricity erasable memorizer E2prom.
Power supply can comprise, also can not comprise, preferably, said steering wheel angle measuring system also comprises power supply, and said power supply circuit respectively connects said first Hall chip 6, said second Hall chip 7, said corner computing chip and said CAN chip.See also shown in Figure 2ly, in the specific embodiment of the utility model, said power supply also circuit connects said storer.
See also shown in Figure 3ly, during use, the 3rd gear ring 3 is installed on the steering column; Steering column is fixedly connected with vehicle steering, after the vehicle ignition, and at first initialization: bearing circle outer corner measurement sensor is started demarcation (for example: use specific I D that first Hall chip 6 and second Hall chip 7 are sent the demarcation order through the CAN chip) through the CAN chip; First Hall chip 6 and second Hall chip 7 current location as zero point; Then, along with bearing circle rotates, the 3rd gear ring 3 rotates and drives first gear ring 1 and 2 rotations of second gear ring; And then drive first magnet 4 and 5 rotations of second magnet, measure by first Hall chip 6 and second Hall chip 7; Read chip data then: the angle computing chip receives the data of first Hall chip 6 and second Hall chip 7; Data processing again: first Hall chip 6 and second Hall chip 7 obtain the corner data of corresponding magnet separately; Differential seat angle through between corner/each tooth calculates the number of teeth that gear ring turns over; Through the differential seat angle * number of teeth between the 3rd gear ring 3 each tooth, obtain the angle value of the actual rotation of bearing circle; The zone bit of the Frame that sends through Hall chip then judges whether to be valid data, if invalid data, then through the CAN bus to the vehicle body network alarming; If valid data; Then send angle-data to the CAN chip, communicate by letter with extraneous through the CAN chip then, be sent to the vehicle body network to current angle information through the CAN bus; Current information storage is got up in each outage back, reads out during following task again.
The steering wheel angle survey sensor of the utility model is a kind of contactless Hall rotary angle transmitter, angle and speed that the user can the direction of measurement dish rotates.The steering wheel angle measuring system of the utility model is demarcated through the CAN bus and is transmitted data.After through the CAN bus bearing circle outer corner measurement sensor being demarcated, the steering wheel angle survey sensor just can be zero point the rotational angle of bearing circle to be measured with the current location.
The utility model compared with prior art has following advantage:
Low to environmental requirement, cost performance is high, and applicability is strong, owing to can change the shell shape size, the user can select the position of installation according to the idea of oneself like this, and is simultaneously simple to operate, need not carry out complicated operations, can make system's operate as normal.Have easy to use, response speed is fast, characteristics such as good in anti-interference performance.
To sum up, the design of the steering wheel angle survey sensor of the utility model is ingenious, simple for structure, can make the user easy to use, possesses very high reliability again, is suitable for large-scale promotion application.
In this instructions, the utility model is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from the spirit and the scope of the utility model.Therefore, instructions and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (4)
1. steering wheel angle survey sensor; It is characterized in that; Comprise first gear ring, second gear ring, the 3rd gear ring, first magnet, second magnet, first Hall chip and second Hall chip; Said first gear ring and said second gear ring mesh with said the 3rd gear ring respectively; Be embedded with said first magnet and said second magnet in said first gear ring and said second gear ring respectively; Said the 3rd gear ring, said first magnet and said second magnet are all rotatable to be provided with, and said first Hall chip and said second Hall chip all are positioned at said first gear ring, said second gear ring and said the 3rd gear ring and also are provided with at interval with said first magnet and said second magnet respectively outward.
2. steering wheel angle survey sensor according to claim 1 is characterized in that, said first Hall chip and said first magnet is 2mm at interval, and said second Hall chip and said second magnet is 2mm at interval.
3. steering wheel angle survey sensor according to claim 1; It is characterized in that; Said steering wheel angle survey sensor also comprises electronic circuit board, and said first Hall chip is installed on the said electronic circuit board and with said electronic circuit board circuit with said second Hall chip and is connected.
4. steering wheel angle survey sensor according to claim 1; It is characterized in that; Said steering wheel angle survey sensor also comprises shell; Said first gear ring, said second gear ring, said the 3rd gear ring, said first magnet, said second magnet, said first Hall chip and said second Hall chip all are positioned at said shell, and said the 3rd gear ring, said first magnet and said second magnet are all rotatable to be installed in the said shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200894015U CN202547590U (en) | 2012-03-09 | 2012-03-09 | Steering wheel rotating angle measurement sensor and relevant measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200894015U CN202547590U (en) | 2012-03-09 | 2012-03-09 | Steering wheel rotating angle measurement sensor and relevant measurement system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202547590U true CN202547590U (en) | 2012-11-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200894015U Expired - Fee Related CN202547590U (en) | 2012-03-09 | 2012-03-09 | Steering wheel rotating angle measurement sensor and relevant measurement system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202547590U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109720408A (en) * | 2019-02-19 | 2019-05-07 | 厦门捷欧汽车电子有限公司 | Direction disk rotating speed rotary angle transmitter |
| CN113104112A (en) * | 2021-05-27 | 2021-07-13 | 福建盛海智能科技有限公司 | Steering angle sensor and measuring method thereof |
-
2012
- 2012-03-09 CN CN2012200894015U patent/CN202547590U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109720408A (en) * | 2019-02-19 | 2019-05-07 | 厦门捷欧汽车电子有限公司 | Direction disk rotating speed rotary angle transmitter |
| CN113104112A (en) * | 2021-05-27 | 2021-07-13 | 福建盛海智能科技有限公司 | Steering angle sensor and measuring method thereof |
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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: 20180309 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |