CN208842393U - A kind of commercial vehicle vehicle speed processing device based on entire car controller - Google Patents
A kind of commercial vehicle vehicle speed processing device based on entire car controller Download PDFInfo
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- CN208842393U CN208842393U CN201821391647.1U CN201821391647U CN208842393U CN 208842393 U CN208842393 U CN 208842393U CN 201821391647 U CN201821391647 U CN 201821391647U CN 208842393 U CN208842393 U CN 208842393U
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Abstract
The utility model belongs to commercial vehicle full-vehicle control field, is related to a kind of commercial vehicle vehicle speed processing device based on entire car controller；It is made of sensor speed computing device, ABS speed computing device, data fusion output device, four part of speed maintenance device after sale；Sensor speed computing device is made of vehicle speed sensor, target wheel, entire car controller-sensor vehicle speed calculation module；ABS speed computing device is made of ABS wheel speed sensors, gear ring, abs controller, entire car controller-ABS vehicle speed calculation module；Data fusion device is made of entire car controller-data fusion module, instrument；Speed maintenance device is made of diagnostic equipment, diagnosis CAN bus, entire car controller-speed maintenance module after sale after sale；Compared with speed signal is from vehicle speed sensor scheme all the way, the utility model is greatly improved speed signal reliability, if sensor speed and ABS speed reliability are respectively 90%, 90%, the mileometer speed reliability after fusion treatment is 99%.
Description
Technical field
The utility model relates to commercial vehicle full-vehicle control fields, are related to a kind of vehicle speed processing device, and in particular to Yi Zhongji
In the commercial vehicle vehicle speed processing device of entire car controller.
Background technique
In commercial vehicle driving procedure, speed signal is more important signal, especially ACC (adaptive cruise), AEBS
The popularization and application of (automatic emergency brake system) technology, mistake or unstable speed signal will lead to the mistake of ACC, AEBS function
Effect, or even cause rear-end collision.
Often there is speed pointer pendulum from vehicle speed sensor all the way, marketing users feedback in existing commercial vehicle speed signal
The phenomena of the failure such as dynamic, zero.
It is the driving of driver in consideration of it, needing to provide a kind of reliable vehicle speed processing device for high-quality commercial vehicle
Safety and high-quality driving experience provide a strong guarantee.
Summary of the invention
The discovery of speed integrity problem research process, ABS wheel speed signal is introduced and carries out redundancy with vehicle speed sensor signal,
Rather than speed calculating is carried out by vehicle speed sensor merely, it is greatly improved speed signal reliability.
Commercial vehicle key signal is all that two-way carries out redundancy, and such as accelerator opening amount signal, brake switch signal, speed passes through superfluous
Remaining raising reliability introduces ABS wheel speed, and ABS is that regulation forces item, does not increase vehicle cost.
A kind of commercial vehicle vehicle speed processing device based on entire car controller, it is characterised in that: calculated and filled by sensor speed
It sets, ABS speed computing device, data fusion output device, after sale four part of speed maintenance device composition；
The sensor speed computing device includes vehicle speed sensor, entire car controller-sensor vehicle speed calculation module；
The signal output end of the vehicle speed sensor and entire car controller-sensor vehicle speed calculation module speed signal are defeated
Enter end to be connected；
The ABS speed computing device includes ABS wheel speed sensors, abs controller, the calculating of entire car controller-ABS speed
Module；
The signal output end of the ABS wheel speed sensors is connected with the wheel speed signal input terminal of abs controller；
The abs controller is connect with entire car controller-ABS vehicle speed calculation module by chassis CAN communication；
The data fusion device includes entire car controller-data fusion module, instrument；
Entire car controller-the data fusion module is connected with instrument by power CAN bus；
The maintenance device of speed after sale includes diagnostic equipment, entire car controller-speed maintenance module after sale；Full-vehicle control
Device-speed maintenance module after sale is connected with diagnostic equipment by diagnosing CAN bus.
In the sensor speed computing device, entire car controller-sensor vehicle speed calculation module EOL link obtains vehicle
Rear-axle gear ratio, tire rolling radius, entire car controller-sensor vehicle speed calculation module according to the vehicle speed sensor pulse period,
Transmission ratio parameter, which calculates, generates sensor speed；
In formula, Vout-sensorFor sensor speed；N is the target wheel number of teeth；R is tire rolling radius；raFor rear-axle gear ratio；k
For correction factor (being defaulted as 1, can demarcate)；T is pulse signal cycle.
The abs controller calculates front axle according to ASB wheel speed sensors pulse signal frequency, default tire rolling radius
Wheel speed, and entire car controller-ABS vehicle speed calculation module is transferred to by chassis CAN bus；Entire car controller-ABS speed calculates
Module calculates according to front axle wheel speed information, actual tire rolling radius and generates ABS speed；
In formula, Vout-ABSFor ABS speed；VABSThe front axle wheel speed issued for abs controller；R is tire rolling radius；K is
Correction factor.
In the data fusion output device, entire car controller-data fusion module to sensor speed, ABS speed into
Row credibility check, fusion calculation generate mileometer speed, are exported by power CAN and shown to instrument；
Entire car controller-data fusion module obtains two-way speed source, i.e. sensor speed and ABS speed, calculates output
Speed be mileometer speed and final speed.
In the maintenance device of speed after sale, rear-axle gear ratio, the tire rolling radius after replacement are joined by diagnostic equipment
Number write-in entire car controllers-are after sale in speed maintenance module, and entire car controller-speed maintenance module after sale is by new calculating parameter
Sensor vehicle speed calculation module and ABS vehicle speed calculation module are passed to, for guaranteeing after user's re-type model, rear axle model
The accuracy of mileometer speed.
The utility model compared with prior art, advantageous effects:
Compared with speed signal is from vehicle speed sensor scheme all the way, the utility model is greatly improved speed signal can
By property, if sensor speed and ABS speed reliability are respectively 90%, 90%, the mileometer speed after fusion treatment is reliable
Property are as follows:
[1- (1-0.9) × (1-0.9)] × 100%=99%
Detailed description of the invention
Fig. 1 is the functional block diagram of the commercial vehicle vehicle speed processing device described in the utility model based on entire car controller；
Fig. 2 is the data fusion device in the commercial vehicle vehicle speed processing device described in the utility model based on entire car controller
Logic diagram；
Fig. 3 is the maintenance of speed after sale in the commercial vehicle vehicle speed processing device described in the utility model based on entire car controller
Device diagnostic equipment interface.
Specific embodiment
To further illustrate the technical solution of the utility model, in conjunction with Figure of description, the specific implementation of the utility model
Mode is as follows:
A kind of commercial vehicle speed controller, by sensor speed computing device, ABS speed computing device, data fusion
Output device, after sale four part of speed maintenance device form；
The sensor speed computing device is by vehicle speed sensor, target wheel, entire car controller-sensor vehicle speed calculation module
Composition；The target wheel is coaxially connected with transmission output shaft；The signal output end and entire car controller-sensor of vehicle speed sensor
The speed signal input terminal of vehicle speed calculation module is connected.
Entire car controller uses modularized design, and inside includes many whole automobile control function modules, the utility model relates to
Wherein entire car controller-sensor vehicle speed calculation module, entire car controller-ABS vehicle speed calculation module, entire car controller-data
Fusion Module, entire car controller-speed maintenance module after sale.
In the sensor speed computing device, entire car controller-sensor vehicle speed calculation module EOL (End Of
Line, off-line test) link acquisition vehicle rear axle reduction ratio, tire rolling radius, entire car controller-sensor speed calculating mould
Root tuber calculates according to vehicle speed sensor pulse period, transmission ratio parameter and generates sensor speed.
In formula, Vout-sensorFor sensor speed；N is the target wheel number of teeth；R is tire rolling radius；raFor rear-axle gear ratio；k
For correction factor (being defaulted as 1, can demarcate)；T is pulse signal cycle.
The ABS speed computing device is by ABS wheel speed sensors, gear ring, abs controller, entire car controller-ABS speed
Computing module composition；The gear ring is co-axially mounted with hub for vehicle wheel；The signal output end and abs controller of ABS wheel speed sensors
Wheel speed signal input terminal be connected；Abs controller is connected with entire car controller-ABS vehicle speed calculation module by chassis CAN communication
It connects.
In the ABS speed computing device, entire car controller-ABS vehicle speed calculation module EOL link obtains tire and rolls
Radius parameter；
Abs controller rolls half according to ASB wheel speed sensors pulse signal frequency, default tire in vehicle travel process
Diameter calculates front axle wheel speed, and is transferred to entire car controller-ABS vehicle speed calculation module by chassis CAN bus；Entire car controller-
ABS vehicle speed calculation module calculates according to front axle wheel speed information, actual tire rolling radius and generates ABS speed.
In formula, Vout-ABSFor ABS speed；VABSThe front axle wheel speed issued for abs controller；R is tire rolling radius；K is
Correction factor (is defaulted as 1, can demarcate).
Note: it is that 3200mm is calculated that the front axle wheel speed that abs controller is sent, which is based on tyre rolling circumference,.
The data fusion output device is made of entire car controller-data fusion module, instrument, entire car controller-number
It is connected with instrument by power CAN bus according to Fusion Module.
In the data fusion output device, entire car controller-data fusion module is to sensor speed, ABS speed
Credibility check is carried out, fusion calculation generates mileometer speed, exports by power CAN and shown to instrument.
Entire car controller-data fusion module obtains two-way speed source, i.e. sensor speed and ABS speed, calculates output
Speed be mileometer speed and final speed.
The maintenance device of speed after sale is by diagnostic equipment, diagnosis CAN bus, entire car controller-speed maintenance module after sale
Composition, entire car controller-speed maintenance module after sale are connected with diagnostic equipment by diagnosing CAN bus.
In the maintenance device of speed after sale, by diagnostic equipment by rear-axle gear ratio, the tire rolling radius after replacement
Parameter is written in entire car controller-speed maintenance module after sale, and entire car controller-speed maintenance module after sale joins new calculating
Number passes to sensor vehicle speed calculation module and ABS vehicle speed calculation module, for protecting after user's re-type model, rear axle model
Demonstrate,prove the accuracy of mileometer speed.
As shown in Figure 1, vehicle speed sensor is connected with entire car controller-sensor vehicle speed calculation module, speed sensing is obtained
Device pulse signal；
Entire car controller-ABS vehicle speed calculation module is connected with abs controller by bus, and EBC2 (Wheel is passed through
Speed Information, wheel speed information) Receive message ABS front axle wheel speed signal；
Processing result is sent bus by entire car controller-data fusion module, and instrument obtains mileometer speed and shown,
ACC, AEBS system obtain mileometer speed and carry out relevant control.
As shown in Fig. 2, data fusion output device control logic is as follows, entire car controller-data fusion module is passed
Sensor speed, ABS speed two paths of signals preferentially use sensor speed, when judging sensor speed negative bias compared with ABS speed
When difference is more than 5km/h, entire car controller-data fusion module output mileometer speed is switched to ABS speed in 50ms, this mistake
Gift of money for a friend going on a journey table speed pointer is not in fluctuation.
As shown in figure 3, the maintenance device of speed after sale in the utility model can change rear-axle gear ratio, tire rolling radius
Information, user can select according to the tyre model of replacement, guarantee mileometer speed accuracy.
Claims (5)
1. a kind of commercial vehicle vehicle speed processing device based on entire car controller, it is characterised in that: by sensor speed computing device,
ABS speed computing device, data fusion output device and after sale four part of speed maintenance device form；
The sensor speed computing device includes vehicle speed sensor, entire car controller-sensor vehicle speed calculation module；
The signal output end and entire car controller-sensor vehicle speed calculation module speed signal input terminal of the vehicle speed sensor
It is connected；
The ABS speed computing device includes ABS wheel speed sensors, abs controller, entire car controller-ABS speed calculating mould
Block；
The signal output end of the ABS wheel speed sensors is connected with the wheel speed signal input terminal of abs controller；
The abs controller is connect with entire car controller-ABS vehicle speed calculation module by chassis CAN communication；
The data fusion device includes entire car controller-data fusion module, instrument；
Entire car controller-the data fusion module is connected with instrument by power CAN bus；
The maintenance device of speed after sale includes diagnostic equipment, entire car controller-speed maintenance module after sale；Entire car controller-is sold
Speed maintenance module is connected with diagnostic equipment by diagnosing CAN bus afterwards.
2. a kind of commercial vehicle vehicle speed processing device based on entire car controller according to claim 1, it is characterised in that:
In the sensor speed computing device, entire car controller-sensor vehicle speed calculation module EOL link obtains vehicle rear axle
Reduction ratio, tire rolling radius, entire car controller-sensor vehicle speed calculation module is according to vehicle speed sensor pulse period, transmission
It is calculated than parameter and generates sensor speed；
In formula, Vout-sensorFor sensor speed；N is the target wheel number of teeth；R is tire rolling radius；raFor rear-axle gear ratio；K is to repair
Positive coefficient；T is pulse signal cycle.
3. a kind of commercial vehicle vehicle speed processing device based on entire car controller according to claim 1, it is characterised in that:
The abs controller calculates front axle wheel speed according to ASB wheel speed sensors pulse signal frequency, default tire rolling radius,
And entire car controller-ABS vehicle speed calculation module is transferred to by chassis CAN bus；Entire car controller-ABS vehicle speed calculation module
According to front axle wheel speed information, actual tire rolling radius, calculates and generate ABS speed；
In formula, Vout-ABSFor ABS speed；VABSThe front axle wheel speed issued for abs controller；R is tire rolling radius；K is amendment
Coefficient.
4. a kind of commercial vehicle vehicle speed processing device based on entire car controller according to claim 1, it is characterised in that:
In the data fusion output device, entire car controller-data fusion module can to sensor speed, the progress of ABS speed
The inspection of letter property, fusion calculation generate mileometer speed, are exported by power CAN and shown to instrument；
Entire car controller-data fusion module obtains two-way speed source, i.e. sensor speed and ABS speed, calculates the vehicle of output
Speed is mileometer speed and final speed.
5. a kind of commercial vehicle vehicle speed processing device based on entire car controller according to claim 1, it is characterised in that:
In the maintenance device of speed after sale, the rear-axle gear ratio after replacement, tire rolling radius parameter are write by diagnostic equipment
Enter in entire car controller-speed maintenance module after sale, entire car controller-speed maintenance module after sale transmits new calculating parameter
To sensor vehicle speed calculation module and ABS vehicle speed calculation module, for guaranteeing mileage after user's re-type model, rear axle model
The accuracy of table speed.
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| CN201821391647.1U CN208842393U (en) | 2018-08-27 | 2018-08-27 | A kind of commercial vehicle vehicle speed processing device based on entire car controller |
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| CN201821391647.1U CN208842393U (en) | 2018-08-27 | 2018-08-27 | A kind of commercial vehicle vehicle speed processing device based on entire car controller |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109017800A (en) * | 2018-08-27 | 2018-12-18 | 汽解放汽车有限公司 | A kind of commercial vehicle vehicle speed processing device based on entire car controller |
| CN110329229A (en) * | 2019-07-30 | 2019-10-15 | 任涛 | A kind of adjustable vehicle ABS anti-lock braking system demarcated |
| CN111605558A (en) * | 2020-04-21 | 2020-09-01 | 宁波吉利汽车研究开发有限公司 | Vehicle speed determination method and device, electronic equipment and vehicle |
-
2018
- 2018-08-27 CN CN201821391647.1U patent/CN208842393U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109017800A (en) * | 2018-08-27 | 2018-12-18 | 汽解放汽车有限公司 | A kind of commercial vehicle vehicle speed processing device based on entire car controller |
| CN109017800B (en) * | 2018-08-27 | 2024-03-19 | 一汽解放汽车有限公司 | Commercial vehicle speed processing device based on whole vehicle controller |
| CN110329229A (en) * | 2019-07-30 | 2019-10-15 | 任涛 | A kind of adjustable vehicle ABS anti-lock braking system demarcated |
| CN110329229B (en) * | 2019-07-30 | 2024-05-10 | 任涛 | Adjustable and calibratable vehicle ABS (anti-lock braking system) |
| CN111605558A (en) * | 2020-04-21 | 2020-09-01 | 宁波吉利汽车研究开发有限公司 | Vehicle speed determination method and device, electronic equipment and vehicle |
| CN111605558B (en) * | 2020-04-21 | 2022-07-19 | 浙江吉利控股集团有限公司 | Vehicle speed determination method and device, electronic equipment and vehicle |
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