CN103675327A - Vehicle speed detection method - Google Patents
Vehicle speed detection method Download PDFInfo
- Publication number
- CN103675327A CN103675327A CN201210342552.1A CN201210342552A CN103675327A CN 103675327 A CN103675327 A CN 103675327A CN 201210342552 A CN201210342552 A CN 201210342552A CN 103675327 A CN103675327 A CN 103675327A
- Authority
- CN
- China
- Prior art keywords
- vehicle speed
- vehicle
- speed
- meter
- constant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a vehicle speed detection method. A whole vehicle runs at a preset speed v, so that vehicle speed detection can be executed on a vehicle speed test bed on a whole vehicle detection line; at the moment, the signal frequency detected by a meter is P, and the formula that k=v/P can be obtained after calculation; the value k is stored into a meter system and serves as a constant k during normal working of the meter; when the meter works normally, the vehicle speed v is equal to kP. According to the technical scheme, the vehicle speed detection method has the beneficial effects of convenience and feasibility; a meter software designer does not need to pay attention to the mechanical structure and relevant parameters of the whole vehicle, so that the technical clarification work of a supplier and a customer in a product development process is reduced, the development period is shortened, and the vehicle speed detection method is suitable for all vehicle types of which the appearances and the sizes of the meters are the same.
Description
Technical field
The present invention relates to a kind of detection method, be specifically related to a kind of method for detecting vehicle speed.
Background technology
Electronic instrument is all by detecting the frequency of speed of a motor vehicle sensor signal, to determine the size of the speed of a motor vehicle, 1km/h as corresponding in 1Hz, the corresponding 60km/h of 60Hz.The frequency of vehicle speed signal is generally determined by 3 parameters: diameter of tyres D (or girth), this parameter can be speed of a motor vehicle v (km/h of unit) by the linear velocity of tire, convert angular velocity omega 1 (rPm of unit) to, formula is as follows: ω 1=v/60 π D, and different vehicle diameter of tyres is different; Ratio of gear n, output shaft of gear-box is to the reduction gear ratio n of process between tire, and this parameter can convert tire angular velocity ω 1 to gearbox output shaft angular velocity omega 2, and formula is as follows: ω 2=n ω 1, different vehicle ratio of gear is different; Often turn umber of pulse m, sensor and gear case coordinate, gearbox output shaft often turns around, sensor produces m pulse signal, this parameter converts gearbox output shaft angular velocity omega 2 to pulse signal frequency P (unit: Hz), formula is as follows: P=m ω 2/60=m n ω 1/60=mnv/ (3600 π D) that instrument detects.
Conventionally the frequency numerical value P that measuring truck short-cut counting method basis detects, process formula: v=3600 π D P/ (mn) calculates speed of a motor vehicle numerical value.That is: v=kP, constant k=3600 π D/ (mn).This method has 2 restrictions when instrument Software for Design: D, m, these three data values of n can be accurately known in requirement, and any one parameter is inaccurate all can cause speed of a motor vehicle detection inaccurate, and during any one unknown parameters, design just cannot complete; When vehicle changes, when in these three parameters, any one parameter changes, instrument software all will be made corresponding modify, also wants instrument model to change, just, corresponding one by one with car load, it is numerous that model increases the trouble of bringing to each process of operation such as production, management, sale.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of method for detecting vehicle speed, facilitate feasible, instrument software developer need not pay close attention to car load physical construction and correlation parameter, reduced the work of confiding a technological secret of both sides of supply and demand in product development process, shorten the construction cycle, be applicable to all vehicles that instrument physical dimension is identical.
For achieving the above object, technical scheme of the present invention is as follows: a kind of method for detecting vehicle speed, comprises the steps:
(1). vehicle complete vehicle is arranged on test car speed platform and is tested, make automobile carry out constant-speed operation with preset vehicle speed v;
(2). according to known v and P, calculate constant k=v/P;
(3). under the system log (SYSLOG) in automobile instrument, calculate constant k and be kept in internal memory;
(4). in the known situation of constant k, the signal frequency P that speed of a motor vehicle v can detect by automobile instrument in real time, according to formula v=kP, calculates.
Preferably, the described umber of pulse m that often turns is the sensor umber of pulse being arranged on automotive gearbox output shaft.
Preferably, described diameter of tyres D is the diameter of tyres of detected automobile.
Preferably, described wheel box ratio of gear n is the wheel box ratio of gear of detected automobile.
Adopt the beneficial effect of the technical program to be: to facilitate feasible, instrument software developer need not pay close attention to car load physical construction and correlation parameter, reduce the work of confiding a technological secret of both sides of supply and demand in product development process, shortened the construction cycle, be applicable to all vehicles that instrument physical dimension is identical.
By allowing car load move with the speed v of being scheduled to, can on car load detection line, on speed of a motor vehicle test board, carry out, the signal frequency P that now instrument detects, obtain afterwards as calculated k=v/P, and this value is deposited in instrument system, constant k while normally working as instrument, when instrument is normally worked, the speed of a motor vehicle is v=kP.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in embodiment of the present invention technology, to the accompanying drawing of required use in embodiment technical description be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is that system of the present invention forms block diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
A kind of method for detecting vehicle speed of the present invention, comprises the steps:
(1). vehicle complete vehicle is arranged on test car speed platform and is tested, make automobile carry out constant-speed operation with preset vehicle speed v;
(2). according to known v and P, calculate constant k=v/P;
(3). under the system log (SYSLOG) in automobile instrument, calculate constant k and be kept in internal memory;
(4). in the known situation of constant k, the signal frequency P that speed of a motor vehicle v can detect by automobile instrument in real time, according to formula v=kP, calculates.
Adopt the beneficial effect of the technical program to be: to facilitate feasible, instrument software developer need not pay close attention to car load physical construction and correlation parameter, reduce the work of confiding a technological secret of both sides of supply and demand in product development process, shortened the construction cycle, be applicable to all vehicles that instrument physical dimension is identical.
By allowing car load move with the speed v of being scheduled to, can on car load detection line, on speed of a motor vehicle test board, carry out, the signal frequency P that now instrument detects, obtain afterwards as calculated k=v/P, and this value is deposited in instrument system, constant k while normally working as instrument, when instrument is normally worked, the speed of a motor vehicle is v=kP.
As shown in Figure 1, often turn umber of pulse m and be arranged on the signal that the sensor on automotive gearbox output shaft records.Diameter of tyres D is the diameter of tyres of detected automobile.Wheel box ratio of gear n is the wheel box ratio of gear of detected automobile.
In the present embodiment, preset vehicle speed v is 60km/h, and P can draw by calculating, now constant k=60/P.
In instrument system software, increase the learning functionality module of said method, this learning functionality module can start by setting the mode such as not loose that presses & hold before button time or start, after instrument system learning functionality module starts, allow car load move (being v=60) with the speed of 60km/h, can on car load detection line, on speed of a motor vehicle test board, carry out, the signal frequency that now instrument detects is P, obtain afterwards as calculated k=60/P, and this value is deposited in system in to the constant k while normally working as instrument.
In instrument, start after learning functionality module, car load can be under the speed of a motor vehicle of setting constant-speed operation, this condition can realize in each car load factory, facilitates feasible.Instrument software developer need not pay close attention to car load physical construction and correlation parameter, has reduced the work of confiding a technological secret of both sides of supply and demand in product development process, has shortened the construction cycle.Adopt the instrument of this patent algorithm to go for all vehicles that instrument physical dimension is identical.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (4)
1. a method for detecting vehicle speed, is characterized in that, comprises the steps:
(1). vehicle complete vehicle is arranged on test car speed platform and is tested, make automobile carry out constant-speed operation with preset vehicle speed v;
(2). according to known v and P, calculate constant k=v/P;
(3). under the system log (SYSLOG) in automobile instrument, calculate constant k and be kept in internal memory;
(4). in the known situation of constant k, the signal frequency P that speed of a motor vehicle v can detect by automobile instrument in real time, according to formula v=kP, calculates.
2. a kind of method for detecting vehicle speed according to claim 1, is characterized in that, the described umber of pulse m that often turns is the sensor umber of pulse being arranged on automotive gearbox output shaft.
3. a kind of method for detecting vehicle speed according to claim 1, is characterized in that, described diameter of tyres D is the diameter of tyres of detected automobile.
4. a kind of method for detecting vehicle speed according to claim 1, is characterized in that, described wheel box ratio of gear n is the wheel box ratio of gear of detected automobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210342552.1A CN103675327A (en) | 2012-09-17 | 2012-09-17 | Vehicle speed detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210342552.1A CN103675327A (en) | 2012-09-17 | 2012-09-17 | Vehicle speed detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103675327A true CN103675327A (en) | 2014-03-26 |
Family
ID=50313506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210342552.1A Pending CN103675327A (en) | 2012-09-17 | 2012-09-17 | Vehicle speed detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103675327A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811909A (en) * | 2016-03-30 | 2016-07-27 | 苏州合欣美电子科技有限公司 | Self-adaptive volume adjustment method for automobile player based on speed measurement |
| CN106091918A (en) * | 2016-06-22 | 2016-11-09 | 清华大学 | A kind of dynamic measures the device and method of mechanical transmission clutch collar angular displacement |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1039305A (en) * | 1988-06-14 | 1990-01-31 | 北京青锋机床厂 | Car speed monitoring method and device |
| CN1073763A (en) * | 1991-12-26 | 1993-06-30 | 北京市计量测试所 | Vehicle speed odometer calibrator capable of defining K value |
| US6111401A (en) * | 1998-06-25 | 2000-08-29 | Arthur Allen Manufacturing Co. | Compact, self contained, hall-effect vehicle speed sensor |
| CN1345669A (en) * | 2000-09-29 | 2002-04-24 | 李宗懋 | Inteligent type electronic speed meter for vehicle |
| CN2663989Y (en) * | 2003-12-29 | 2004-12-15 | 西安达刚公路机电科技有限公司 | Vehicle speed detecting equipment using Hall proximity switch |
-
2012
- 2012-09-17 CN CN201210342552.1A patent/CN103675327A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1039305A (en) * | 1988-06-14 | 1990-01-31 | 北京青锋机床厂 | Car speed monitoring method and device |
| CN1073763A (en) * | 1991-12-26 | 1993-06-30 | 北京市计量测试所 | Vehicle speed odometer calibrator capable of defining K value |
| US6111401A (en) * | 1998-06-25 | 2000-08-29 | Arthur Allen Manufacturing Co. | Compact, self contained, hall-effect vehicle speed sensor |
| CN1345669A (en) * | 2000-09-29 | 2002-04-24 | 李宗懋 | Inteligent type electronic speed meter for vehicle |
| CN2663989Y (en) * | 2003-12-29 | 2004-12-15 | 西安达刚公路机电科技有限公司 | Vehicle speed detecting equipment using Hall proximity switch |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811909A (en) * | 2016-03-30 | 2016-07-27 | 苏州合欣美电子科技有限公司 | Self-adaptive volume adjustment method for automobile player based on speed measurement |
| CN106091918A (en) * | 2016-06-22 | 2016-11-09 | 清华大学 | A kind of dynamic measures the device and method of mechanical transmission clutch collar angular displacement |
| CN106091918B (en) * | 2016-06-22 | 2019-07-02 | 清华大学 | A kind of device and method of dynamic measurement mechanical transmission clutch collar angular displacement |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106872827B (en) | Dynamic testing system and method for electric transmission mechanism of electric vehicle | |
| CN204854761U (en) | Odometer | |
| CN105008150B (en) | Method for associating multiple tire locations on the vehicle with system for monitoring pressure in tyre | |
| CN108663212B (en) | Vehicle running signal simulation system for engine bench alignment | |
| CN107554529B (en) | Method and system for calculating vehicle speed of commercial vehicle | |
| CN104276107B (en) | A kind of automobile ECO driving conditions prompt system and reminding method | |
| KR101193376B1 (en) | Fuel consumption evaluation system and vehicle driving evaluation system | |
| CN102830296A (en) | Power supply ripple interference test method and system | |
| US11037381B2 (en) | Vehicle drive train test system and vehicle drive train test method | |
| CN104541123B (en) | Method and apparatus for asking for the girth of the tire on vehicle | |
| CN103675327A (en) | Vehicle speed detection method | |
| CN105158495A (en) | Rotating speed detection device based on power supply control and output pulse frequency | |
| CN108973544B (en) | Device for detecting tire pressure by using current | |
| JP2020012832A (en) | Method of calculating average revolutions per independent unit | |
| CN105067833A (en) | Automobile engine rotating speed detection apparatus based on power controller | |
| CN104360098A (en) | Vehicle speed detecting method based on vehicle engine | |
| Zhou et al. | Data acquisition system based on LabVIEW for ABS dynamic simulation test stand | |
| CN104713723A (en) | Endurance test failure judgment method for automobile transmission system | |
| CN109916489B (en) | Combined weighing method and device for weighing equipment | |
| US20080127749A1 (en) | System for detecting axle loads | |
| CN105259364A (en) | Rotating speed detection and control method of automobile engine | |
| CN106289308A (en) | The measuring method of vehicle tyre revolution, system and taxi pricing device | |
| JP4844472B2 (en) | Evaluation method of electric inertia control response | |
| SE533770C2 (en) | Method for determining torque in connection with a motor vehicle's driveline and a motor vehicle | |
| JP3338003B2 (en) | Electric bicycle evaluation method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140326 |