CN2862042Y - Vehicle pavement recognition device - Google Patents
Vehicle pavement recognition device Download PDFInfo
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- CN2862042Y CN2862042Y CN 200520035855 CN200520035855U CN2862042Y CN 2862042 Y CN2862042 Y CN 2862042Y CN 200520035855 CN200520035855 CN 200520035855 CN 200520035855 U CN200520035855 U CN 200520035855U CN 2862042 Y CN2862042 Y CN 2862042Y
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- road surface
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Abstract
The utility model discloses a road recognition system for motor vehicles, which includes control module, vehicle speed sensor, wheel speed sensor and output module. The output terminal of the control module is connected to the output module. The control module receives the signals outputted from the vehicle speed sensor and wheel speed sensor, and transmits the processed road condition information to the output module. The utility model is capable of recognizing road condition and showing the road condition via indicating lamps. Drivers can intuitively acquire road condition information and control driving speed according to the road condition.
Description
[technical field]
The utility model relates to a kind of automobile road surface recognition device, can judge the quality on road surface, thereby the prompting driver notes.
[background technology]
Now, the fast development of automobile, make many ordinary peoples that the automobile of oneself also arranged, but a series of traffic problems have also been introduced, traffic hazard emerges in an endless stream, study carefully some reasons, driver's road pavement does not have rational knowledge, thus under the relatively poor situation of running at high speed again of pavement behavior, bring to a halt, taking a sudden turn causes vehicle slip out of control.If have a kind of the device to help the driver to identify the quality on road surface, and point out the driver to note not driving over the speed limit, can avoid the generation of many accidents.
The utility model does not stop when driving passes through sensor monitors pavement behavior, and be divided into 10 gears and on the LED lamp, show, travel to remind the driver not surpass its limiting velocity on different road surfaces, if under current pavement behavior, exceed its limiting velocity, system also can report to the police automatically, with guarantee driving safety.
[summary of the invention]
Fundamental purpose of the present utility model is exactly in order to solve problems of the prior art, and a kind of automobile road surface recognition device is provided, and can identify road conditions, and road conditions are shown.
Fundamental purpose of the present utility model just provides a kind of automobile road surface recognition device, and in the time of can surpassing the limiting velocity of existing road conditions in the speed of a motor vehicle of automobile, prompting the driver note.
For achieving the above object, a kind of automobile road surface recognition device that the utility model proposes, comprise control module, vehicle speed sensor, wheel speed sensors and output module, the output signal of described control module response vehicle speed sensor and wheel speed sensors, the output terminal of described control module links to each other with output module, and described control module will output to output module through handling the road conditions that draw.
Preferably, described output module comprises continuous amplifying circuit and light-emitting diode display, and described amplifying circuit links to each other with the output terminal of control module.
Described light-emitting diode display is ten sections light-emitting diode displays.
Also comprise be connected between wheel speed sensors and the control module, be used for signal conditioning circuit that wheel speed signal is changed.
Further improve and be: also comprise key signal input circuit, relay, automobile power source and power conversion module, the signal of the input end response key signal input circuit of described relay, output terminal is for providing path between automobile power source and the power conversion module.
Further improve and be: described key signal input circuit also is coupled to control module.
Another improvement of the present utility model is: also comprise the overspeed alarming module, described overspeed alarming module links to each other with control module.
Further improve and be: also comprise engine speed sensor, described control module is the output signal of responding engine speed pickup also.
Also comprise the fault detection module and the fault alarm module that are used for inspection vehicle speed sensors, wheel speed sensors, engine speed sensor, the output terminal of described fault detection module links to each other with control module, and the input end of described fault alarm module links to each other with control module.
Because the weight of vehicle is greater than the weight hundred times of wheel, so the inertia of the inertia ratio wheel of vehicle is big doubly a lot, hence one can see that, under the effect of external force, as Uneven road, brake, step on the gas, the speed of a motor vehicle can not be suddenlyd change, its intensity of variation is slower, and the variation of wheel speed then is instantaneous.Suppose that wheel and ground fit tightly, then wheel speed equals the speed of a motor vehicle all the time, is synchronized with the speed of a motor vehicle and changes.And actual conditions are quite different, and the friction force that ground offers wheel is limited, and this just causes, the asynchronous variation of the wheel speed and the speed of a motor vehicle, and the size of difference has just in time reflected the quality of pavement behavior.The utility model adopts this principle just, utilizes the difference of wheel speed signal and vehicle speed signal to differentiate the quality of pavement behavior.
The beneficial effects of the utility model are: 1) can identify road conditions and show by output module, when output module adopts ten sections LED to show, represent the quality of road conditions by pilot lamp, the driver can know the quality of road conditions very intuitively, can control the speed of travelling according to road conditions.2) overspeed alarm device is set, when the speed of a motor vehicle surpassed limiting velocity under these road conditions, the alarm driver guaranteed the safety of driving.3) revise the result of calculation of wheel speed signal and vehicle speed signal with the rotating speed of engine, make the judgement of road conditions more accurate.4) fault detection module and fault alarm module are set, when vehicle speed sensor, wheel speed sensors, engine speed sensor have when unusual, then the alarm driver has more fully guaranteed safe driving.
Feature of the present utility model and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
[description of drawings]
Fig. 1 is the block diagram of a kind of embodiment of the present utility model;
Fig. 2 is the circuit diagram of signal conditioning circuit;
Fig. 3 is wheel speed flow chart of data processing figure;
Fig. 4 is the process flow diagram that a kind of embodiment of the present utility model carries out road conditions identification;
Fig. 5 is the system autodiagnosis process flow diagram;
Fig. 6 is the block diagram of another kind of embodiment of the present utility model
Fig. 7 is the circuit diagram of power conversion module.
[embodiment]
Specific embodiment one, as shown in Figure 1, vehicle speed sensor, wheel speed sensors and engine speed sensor link to each other with signal conditioning circuit respectively, and the conversion through signal conditioning circuit outputs to control module.Control module adopts single-chip microcomputer.The signal of wheel speed sensors is the quasi-sine-wave signal that frequency and amplitude are directly proportional with wheel speed, single-chip microcomputer can not directly therefrom extract wheel speed signal, must carry out conversion of signals, convert thereof into the square-wave signal that frequency is directly proportional with wheel speed, the schematic diagram of signal conditioning circuit as shown in Figure 2, signal is by input end Ue input, through being exported by the anode of C4 after the conversion.Single-chip microcomputer is handled earlier vehicle speed sensor, wheel speed sensors and the engine rotational speed signal of input, and is shown in Figure 3, promptly is to wheel speed sensors Signal Processing process, and the class of algorithms of vehicle speed sensor and engine speed sensor data processing seemingly.After calculating the current speed of a motor vehicle, wheel speed and engine speed, also need to calculate the acceleration and deceleration of engine, the speed of a motor vehicle and wheel speed are compared, when the speed of a motor vehicle during less than wheel speed, possible wheel phase road pavement has slip, but this might not illustrate to be exactly that road conditions are bad, also will see the speed conditions of engine.If engine is in uniform rotation, then the comparative result of the speed of a motor vehicle and wheel speed can directly illustrate road conditions.If engine is in acceleration mode, then explanation driver's this moment is stepping on the gas, and wheel speed itself is just greater than the speed of a motor vehicle, so the comparative result of the speed of a motor vehicle and wheel speed need be eliminated the influence of engine acceleration.If engine is in deceleration regime, then explanation driver's this moment is touching on the brake, and wheel speed itself is just less than the speed of a motor vehicle, so the comparative result of the speed of a motor vehicle and wheel speed also needs to eliminate the influence of engine acceleration.Control module is calculated the coefficient of road adhesion of reflection road conditions according to the accelerometer of vehicle speed signal, wheel speed signal and engine, it is the coefficient of static friction of road surface and wheel, traffic information is outputed to output module, output module in the present embodiment comprises amplifying circuit and ten sections light-emitting diode displays, amplifying circuit is accepted the output result of control module, through the driving of amplifying circuit, light corresponding LED light.In general, attachment coefficient belongs to good greater than 0.5 road surface, and attachment coefficient is bad less than 0.4 road surface, and it is that to light the expression attachment coefficient be 0.5 to 1, five pilot lamp that ten pilot lamp light the expression attachment coefficient entirely.
Usually, what road conditions experienced driver knows under with what speed is travelled, but under the individual cases or for new driver, might run at high speed on the not so good road surface of road conditions.Be the security that guarantees to drive, the speed of a motor vehicle of Control of Automobile is no more than the limiting velocity of current road conditions, present embodiment has also designed the overspeed alarming module, the overspeed alarming module links to each other with control module, when the speed of a motor vehicle is no more than the limiting velocity of current road conditions, control module control overspeed alarming module is reported to the police with the prompting driver.The feature on road surface mainly refers to its attachment coefficient, the road surface of low attachment coefficient does not allow to run at high speed, mainly be in order to prevent dangerous situations such as poor stop, sideslip, braking distance is with the body relating to parameters of road surface, the speed of a motor vehicle, vehicle, under certain vehicle condition, limiting velocity is meant that minimum braking distance is 50 meters the speed of a motor vehicle.
For guaranteeing the working properly of vehicle speed sensor, wheel speed sensors and engine speed sensor, present embodiment has also designed fault detection module and fault alarm module, the continuous inspection vehicle speed sensors of fault detection module, wheel speed sensors and engine speed sensor, have when unusual, abnormal signal is outputed to control module, control module control fault alarm module is reported to the police with the prompting driver, more fully guarantees the safety of driving.
The vehicle speed signal of vehicle speed sensor institute perception can be square-wave signal from the input of panel board mouth in addition.The engine rotational speed signal of engine speed sensor institute perception also from the input of panel board mouth, is square-wave signal, so the output terminal of vehicle speed sensor and engine speed sensor can not be coupled to control module by signal conditioning circuit.
The course of work of present embodiment may further comprise the steps as shown in Figure 4:
1, system initialization: system initialization module works in when powering on, and port, internal register, high-speed module, time block, PWM module, EEPROM module, the communication module of single-chip microcomputer are carried out initialization.
2, system autodiagnosis: sensor is carried out self check and checks diagnostic trouble code.Its process flow diagram as shown in Figure 5.
3, data processing: handle from the various signals of sensor input, comprise filtering and calculating, wheel speed sensors flow chart of data processing figure as shown in Figure 3, wherein the class of algorithms of vehicle speed sensor and engine speed sensor data processing is seemingly.
4, fault detect: in the primary module of system, embed a fault detection module and be in order to make the fault that detects sensor that system can be real-time.
5, road surface identification: road surface identification is judged pavement behavior according to wheel speed signal and vehicle speed signal.Because the weight of vehicle is greater than the weight hundred times of wheel, so the inertia of the inertia ratio wheel of vehicle is big doubly a lot, hence one can see that, under the effect of external force, as Uneven road, brake, step on the gas, the speed of a motor vehicle can not be suddenlyd change, its intensity of variation is slower, and the variation of wheel speed then is instantaneous.Suppose that wheel and ground fit tightly, then wheel speed equals the speed of a motor vehicle all the time, is synchronized with the speed of a motor vehicle and changes.And actual conditions are quite different, and the friction force that ground offers wheel is limited, and this just causes, the asynchronous variation of the wheel speed and the speed of a motor vehicle, and the size of difference has just in time reflected the quality of pavement behavior.The road surface identification module adopts this principle just, utilizes wheel speed signal and vehicle speed signal to differentiate the quality of pavement behavior.
6, output result: be responsible for various result of calculations being outputed to pilot lamp, malfunction indicator lamp, over-speed warning light, pavement behavior pilot lamp.
Specific embodiment two, as shown in Figure 6, different with specific embodiment one is the control that has increased the key signal on the basis of specific embodiment one.The signal of the input end response key signal input circuit of described relay, output terminal provides the path between automobile power source and the power conversion module.Automobile power source is the 12V power supply of fluctuation, is stable and the little 5V power supply of ripple and the road conditions recognition device needs, therefore must carry out power source conversion, its schematic diagram as shown in Figure 7, vehicle power supply voltage V
BATTAfter the input power conversion module, through the transformation of chip TA7900S/F, at V
REGOutput+5V voltage.When key inserts ignition switch and turns to second grade, the key signal input circuit is exported the input end of a level signal to relay, pilot relay is connected automobile power source and power conversion module, the each several part power supply of power conversion module road pavement recognition device.When the key signal takes place, relay work, relay is the power switch of total system, when key during not in ignition switch, the key signal input circuit is exported the input end of another level signal to relay, and pilot relay disconnects automobile power source and power conversion module, the power conversion module is not worked, thereby the road surface recognition device is not worked yet, but conserver power source, the serviceable life of extension fixture.
In order to guarantee the accuracy of key signal, the key signal input circuit also outputs to control module, if misoperation has taken place in relay, relay is connected automobile power source and power conversion module, but control module does not receive the signal of key turns to the second grade, then the control module pilot relay disconnects automobile power source and power conversion module, guarantees the accuracy of key signal controlling.
Claims (9)
1. automobile road surface recognition device, it is characterized in that: comprise control module, vehicle speed sensor, wheel speed sensors and output module, the output signal of described control module response vehicle speed sensor and wheel speed sensors, the output terminal of described control module links to each other with output module, and described control module will output to output module through handling the road conditions that draw.
2. automobile as claimed in claim 1 road surface recognition device, it is characterized in that: described output module comprises continuous amplifying circuit and light-emitting diode display, described amplifying circuit links to each other with the output terminal of control module.
3. automobile as claimed in claim 2 road surface recognition device is characterized in that: described light-emitting diode display is ten sections light-emitting diode displays.
4. automobile as claimed in claim 1 road surface recognition device is characterized in that: also comprise be connected between wheel speed sensors and the control module, be used for signal conditioning circuit that wheel speed signal is changed.
5. automobile as claimed in claim 1 road surface recognition device, it is characterized in that: also comprise key signal input circuit, relay, automobile power source and power conversion module, the signal of the input end response key signal input circuit of described relay, output terminal is for providing path between automobile power source and the power conversion module.
6. automobile as claimed in claim 5 road surface recognition device is characterized in that: described key signal input circuit also is coupled to control module.
7. as each described automobile road surface recognition device in the claim 1 to 6, it is characterized in that: also comprise the overspeed alarming module, described overspeed alarming module links to each other with control module.
8. automobile as claimed in claim 7 road surface recognition device is characterized in that: also comprise engine speed sensor, described control module is the output signal of responding engine speed pickup also.
9. automobile as claimed in claim 8 road surface recognition device, it is characterized in that: also comprise the fault detection module and the fault alarm module that are used for inspection vehicle speed sensors, wheel speed sensors, engine speed sensor, the output terminal of described fault detection module links to each other with control module, and the input end of described fault alarm module links to each other with control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035855 CN2862042Y (en) | 2005-10-17 | 2005-10-17 | Vehicle pavement recognition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035855 CN2862042Y (en) | 2005-10-17 | 2005-10-17 | Vehicle pavement recognition device |
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| Publication Number | Publication Date |
|---|---|
| CN2862042Y true CN2862042Y (en) | 2007-01-24 |
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| CN 200520035855 Expired - Lifetime CN2862042Y (en) | 2005-10-17 | 2005-10-17 | Vehicle pavement recognition device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092388A (en) * | 2011-01-20 | 2011-06-15 | 浙江吉利汽车研究院有限公司 | Driving safety control device related to pavement adhesion coefficient |
| CN102870144A (en) * | 2010-03-03 | 2013-01-09 | 霍尼韦尔国际公司 | Aspirating environmental sensor with webserver and email notification |
| CN104835218A (en) * | 2015-05-11 | 2015-08-12 | 上海航盛实业有限公司 | Rotational speed signal acquisition system of driving recorder |
| CN108107891A (en) * | 2017-12-19 | 2018-06-01 | 北京九星智元科技有限公司 | Power-assisted stroller control system and method based on all-wheel drive Multi-sensor Fusion |
| WO2018121595A1 (en) * | 2016-12-29 | 2018-07-05 | 比亚迪股份有限公司 | Acceleration slip regulation control method and device for four-wheel drive electric vehicle |
| CN113954845A (en) * | 2021-12-01 | 2022-01-21 | 宜宾凯翼汽车有限公司 | Bumpy road identification control method and system and automobile |
-
2005
- 2005-10-17 CN CN 200520035855 patent/CN2862042Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102870144A (en) * | 2010-03-03 | 2013-01-09 | 霍尼韦尔国际公司 | Aspirating environmental sensor with webserver and email notification |
| CN102870144B (en) * | 2010-03-03 | 2014-12-31 | 霍尼韦尔国际公司 | Aspirating environmental sensor with webserver and email notification |
| CN102092388A (en) * | 2011-01-20 | 2011-06-15 | 浙江吉利汽车研究院有限公司 | Driving safety control device related to pavement adhesion coefficient |
| CN104835218A (en) * | 2015-05-11 | 2015-08-12 | 上海航盛实业有限公司 | Rotational speed signal acquisition system of driving recorder |
| WO2018121595A1 (en) * | 2016-12-29 | 2018-07-05 | 比亚迪股份有限公司 | Acceleration slip regulation control method and device for four-wheel drive electric vehicle |
| US11273833B2 (en) | 2016-12-29 | 2022-03-15 | Byd Company Limited | Acceleration slip regulation method and device for four-wheel drive electric vehicle |
| CN108107891A (en) * | 2017-12-19 | 2018-06-01 | 北京九星智元科技有限公司 | Power-assisted stroller control system and method based on all-wheel drive Multi-sensor Fusion |
| CN113954845A (en) * | 2021-12-01 | 2022-01-21 | 宜宾凯翼汽车有限公司 | Bumpy road identification control method and system and automobile |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Ping Inventor after: Zheng Hua Inventor before: Wang Ping |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG PING TO: WANG PING; ZHENG HUA |
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| CX01 | Expiry of patent term |
Granted publication date: 20070124 |
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| EXPY | Termination of patent right or utility model |