CN114454716A - Method and system for outputting different speeds of automobile by automobile instrument - Google Patents
Method and system for outputting different speeds of automobile by automobile instrument Download PDFInfo
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- CN114454716A CN114454716A CN202011247423.5A CN202011247423A CN114454716A CN 114454716 A CN114454716 A CN 114454716A CN 202011247423 A CN202011247423 A CN 202011247423A CN 114454716 A CN114454716 A CN 114454716A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 67
- 230000008569 process Effects 0.000 claims description 8
- 238000012423 maintenance Methods 0.000 abstract description 8
- 230000008859 change Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
A method and a system for outputting different vehicle speeds by an automobile instrument are provided, wherein the method comprises the following steps: measuring the inherent output frequency of the instrument through a preset fixed gear transmission ratio; according to the frequency of the vehicle speed sensor input instrument and the natural output frequency of the instrument, the ratio of the natural output frequency of the instrument to the frequency of the vehicle speed sensor input instrument is measured, and the ratio is inversely proportional to the vehicle speed transmission ratio of the whole vehicle; when the transmission ratio of the vehicle speed of the whole vehicle is changed, the ratio is adjusted, the natural output frequency of the instrument can be measured according to the frequency of the changed vehicle speed sensor input instrument, and the vehicle speed is output according to the natural output frequency of the instrument. The method for outputting different speeds of the automobile instrument can realize that the electrical equipment with one speed ratio model can meet the requirements of transmission ratios of different finished automobiles, and the part cost and the management and maintenance cost are lower.
Description
Technical Field
The application relates to the technical field of automobile instruments, in particular to a method and a system for outputting different speeds by an automobile instrument.
Background
In the prior art, there are two methods for outputting different vehicle speeds by an automobile instrument, the first is that the instrument outputs the vehicle speed through a CAN message, and the second is that the instrument outputs a variable frequency signal.
The specific process of outputting the vehicle speed by the instrument through the CAN message is as follows: the instrument collects a vehicle speed frequency signal, the vehicle speed frequency signal is transmitted out in a CAN message after being filtered by the MCU, and the current vehicle speed is read by the CAN protocol by other electric equipment of the whole vehicle, such as a driving recorder, a BCM or a remote controller. However, the electrical equipment which needs to receive the vehicle speed sent out by the instrument must integrate the function of the CAN communication module, and the physical cost is high.
The specific process of the instrument frequency conversion signal output is as follows: the instrument collects a vehicle speed frequency signal, the vehicle speed frequency signal is filtered by the MCU and then directly output with the currently collected corresponding frequency, and other electric equipment of the whole vehicle, such as a driving recorder, a BCM (binary coded modulation) or a remote controller, is directly collected and processed by an entity wire harness. According to the scheme, the electrical equipment which needs to receive the meter outgoing speed signal needs to calibrate the speed transmission ratio consistent with that of the whole vehicle, when the speed transmission ratio of the whole vehicle is changed, the corresponding electrical equipment which receives the meter outgoing speed signal needs to recalibrate the speed transmission ratio, and the management and maintenance cost is high.
Therefore, it is necessary to develop a method for outputting different vehicle speeds by using a low-cost automobile instrument.
Disclosure of Invention
The embodiment of the application provides a method and a system for outputting different vehicle speeds by an automobile instrument, and aims to solve the technical problems that in the related art, electrical equipment receiving a vehicle speed signal sent by the instrument needs to recalibrate a vehicle speed transmission ratio and cost is high.
In a first aspect, the present application provides a method for outputting different vehicle speeds by an automobile instrument, which includes the steps of:
measuring the inherent output frequency of the instrument through a preset fixed gear transmission ratio;
according to the frequency of the vehicle speed sensor input instrument and the natural output frequency of the instrument, the ratio of the natural output frequency of the instrument to the frequency of the vehicle speed sensor input instrument is measured, and the ratio is inversely proportional to the vehicle speed transmission ratio of the whole vehicle;
when the transmission ratio of the vehicle speed of the whole vehicle is changed, the ratio is adjusted, the natural output frequency of the instrument can be measured according to the frequency of the changed vehicle speed sensor input instrument, and the vehicle speed is output according to the natural output frequency of the instrument.
In some embodiments, the natural output frequency of the meter is calculated by the formula:
the inherent output frequency of the meter is the vehicle speed, preset fixed gear transmission ratio, pulse number/3600.
In some embodiments, the frequency of the vehicle speed sensor input meter is calculated by the formula:
and the frequency of the vehicle speed sensor input instrument is the vehicle speed and the whole vehicle speed transmission ratio is the pulse number/3600.
In some embodiments, the ratio of the natural output frequency of the meter to the frequency of the vehicle speed sensor input meter is calculated by:
the ratio is a preset fixed gear transmission ratio/vehicle speed transmission ratio of the whole vehicle.
In some embodiments, the predetermined fixed gear ratio is 637.
In some embodiments, the specific process of outputting the vehicle speed according to the natural output frequency of the meter is as follows: and outputting the vehicle speed through a hard wire.
In a second aspect, the present application provides a system for outputting different vehicle speeds by an automobile instrument, comprising:
the setting module is used for measuring the inherent output frequency of the instrument according to a preset fixed gear transmission ratio;
the calculation module is used for measuring the ratio of the inherent output frequency of the instrument to the frequency of the vehicle speed sensor input instrument according to the frequency of the vehicle speed sensor input instrument and the inherent output frequency of the instrument, and the ratio is inversely proportional to the vehicle speed transmission ratio of the whole vehicle;
and the output module is used for adjusting the ratio when the transmission ratio of the vehicle speed of the whole vehicle is changed, measuring the inherent output frequency of the instrument according to the frequency of the changed vehicle speed sensor input instrument, and outputting the vehicle speed according to the inherent output frequency of the instrument.
In some embodiments, the natural output frequency of the meter is calculated by the formula:
the inherent output frequency of the meter is the vehicle speed, preset fixed gear transmission ratio, pulse number/3600.
In some embodiments, the frequency of the vehicle speed sensor input meter is calculated by the formula:
and the frequency of the vehicle speed sensor input instrument is the vehicle speed and the whole vehicle speed transmission ratio is the pulse number/3600.
In some embodiments, the ratio of the natural output frequency of the meter to the frequency of the vehicle speed sensor input meter is calculated by:
the ratio is a preset fixed gear transmission ratio/vehicle speed transmission ratio of the whole vehicle.
The beneficial effect that technical scheme that this application provided brought includes: the electric equipment with one speed ratio model can meet the requirements of transmission ratios of different finished automobiles, and the part cost, the management cost and the maintenance cost are lower.
The embodiment of the application provides a method for outputting different vehicle speeds by an automobile instrument, which comprises the steps of presetting a fixed gear transmission ratio, measuring the inherent output frequency of the instrument, measuring the ratio of the inherent output frequency of the instrument to the frequency of an input instrument of a vehicle speed sensor according to the obtained inherent output frequency of the instrument and the frequency of the input instrument of the vehicle speed sensor, wherein the ratio is inversely proportional to the vehicle speed transmission ratio of the whole vehicle, adjusting the ratio when the vehicle speed transmission ratio of the whole vehicle is changed to enable the instrument to output the inherent frequency, so that electrical equipment for receiving a vehicle speed signal sent by the instrument, such as a driving recorder, a BCM (binary coded decimal) or a remote controller and the like can realize the identification of the corresponding frequency of the vehicle speed by only calibrating the preset fixed gear transmission ratio without re-calibration, and can realize that the electrical equipment with one speed ratio type can meet the requirements of the speed ratios of different whole vehicles, the change along with the change of the speed ratio of the whole automobile is avoided, the misloading rate of parts is reduced to 0 percent, and therefore the management and maintenance cost is greatly reduced, and the cost of the method for outputting different automobile speeds by the automobile instrument is lower.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are clearly and completely described, and it is obvious that the described embodiments are a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a method for outputting different vehicle speeds by an automobile instrument, which comprises the following steps:
s1: measuring the inherent output frequency of the instrument through a preset fixed gear transmission ratio;
s2: according to the frequency of the vehicle speed sensor input instrument and the natural output frequency of the instrument, the ratio of the natural output frequency of the instrument to the frequency of the vehicle speed sensor input instrument is measured, and the ratio is inversely proportional to the vehicle speed transmission ratio of the whole vehicle;
s3: when the transmission ratio of the vehicle speed of the whole vehicle is changed, the ratio is adjusted, the natural output frequency of the instrument can be measured according to the frequency of the changed vehicle speed sensor input instrument, and the vehicle speed is output according to the natural output frequency of the instrument.
The method for outputting different vehicle speeds by the automobile instrument comprises the steps of presetting a fixed gear transmission ratio, measuring the inherent output frequency of the instrument, measuring the ratio of the inherent output frequency of the instrument to the frequency of the vehicle speed sensor input instrument according to the obtained inherent output frequency of the instrument and the frequency of the vehicle speed sensor input instrument, wherein the ratio is inversely proportional to the vehicle speed transmission ratio of the whole vehicle, and adjusting the ratio when the vehicle speed transmission ratio of the whole vehicle is changed so that the instrument outputs the inherent frequency, therefore, electrical equipment for receiving a vehicle speed signal sent by the instrument, such as a driving recorder, a BCM (binary coded modulation) or a remote controller and the like, can realize the identification of the corresponding frequency of the vehicle speed by only calibrating the preset fixed gear transmission ratio without re-calibration, can realize that the electrical equipment with one type of speed ratio can meet the requirements of different vehicle speed ratios without changing along with the change of the vehicle speed ratio, the misloading rate of the parts is reduced to 0 percent, so that the management and maintenance cost is greatly reduced, the cost of the method for outputting different vehicle speeds by the automobile instrument is lower, and the method has better application prospect.
Further, in the embodiment of the present application, the calculation formula of the natural output frequency of the meter is:
the inherent output frequency of the meter is the vehicle speed, which is the unit of km/h, and the preset fixed gear transmission ratio is the pulse number/3600. Further, in the embodiment of the present application, the calculation formula of the frequency of the vehicle speed sensor input meter is:
the frequency of the vehicle speed sensor input instrument is the vehicle speed, the transmission ratio of the whole vehicle speed is the pulse number/3600, and the unit of the vehicle speed is km/h.
Further, in the embodiment of the present application, the calculation formula of the ratio of the natural output frequency of the meter and the frequency of the vehicle speed sensor input meter is:
the ratio is a preset fixed gear transmission ratio/vehicle speed transmission ratio of the whole vehicle.
In practical application, the specific value between the inherent output frequency of the meter and the frequency of the meter input by the vehicle speed sensor is calculated by taking the vehicle speed as 1km/h, at the moment, the inherent output frequency of the meter is equal to a preset fixed gear transmission ratio, pulse number/3600, and the frequency of the meter input by the vehicle speed sensor is equal to the vehicle speed transmission ratio, pulse number/3600 of the whole vehicle. Preferably, in the embodiment of the present application, the preset fixed gear ratio is 637.
In this application embodiment, select 637 for use to be fixed gear drive ratio, can match with the speed of a motor vehicle drive ratio of most electrical equipment for the electrical equipment that receives the instrument outgoing vehicle speed signal sets up more conveniently.
Further, in the embodiment of the present application, before the frequency of the input meter according to the changed vehicle speed sensor, i.e. the natural output frequency of the meter is measured, the method further includes the steps of: and (3) carrying out MCU filtering processing on the frequency signal of the vehicle speed sensor input instrument so as to reduce signal interference.
Further, in the embodiment of the present application, the specific process of outputting the vehicle speed according to the natural output frequency of the meter is as follows: and outputting the vehicle speed through a hard wire. In the embodiment of the application, the vehicle speed is output through the hard wire, so that the cost of the electric appliance can be effectively reduced.
In the embodiment of the application, a preset fixed gear transmission ratio is 637 as an example, and the frequency of 1km/h of a vehicle speed sensor input instrument is AHz, so that A is the vehicle speed transmission ratio × pulse number/3600 of the whole vehicle; if the frequency of the meter output 1km/h is BHz, B is 637 pulse number/3600; the ratio of the natural output frequency of the instrument to the frequency of the vehicle speed sensor input instrument 637/vehicle speed ratio, it can be seen that the ratio is inversely proportional to the vehicle speed ratio.
In practical application, the electrical equipment receiving the vehicle speed signal sent by the instrument calibrates the fixed gear transmission ratio 637, so that the identification of the corresponding frequency of the vehicle speed can be realized, and the change can be realized in real time according to the vehicle speed, so that the electrical equipment with one speed ratio model can meet the requirements of different transmission ratios of the whole vehicle.
By using the method for outputting different vehicle speeds by the automobile instrument, the use cost of electrical equipment, such as a driving recorder, a BCM (binary coded decimal) or a remote controller, can be effectively reduced by 15 yuan per vehicle, meanwhile, the management and maintenance cost of parts is also effectively reduced, and the cost can be reduced by 150 ten thousand/10 ten thousand in three years.
The embodiment of the present application further provides a system for outputting different vehicle speeds by an automobile instrument, including:
the setting module is used for measuring the inherent output frequency of the instrument according to a preset fixed gear transmission ratio;
the calculation module is used for measuring the ratio of the inherent output frequency of the instrument to the frequency of the vehicle speed sensor input instrument according to the frequency of the vehicle speed sensor input instrument and the inherent output frequency of the instrument, and the ratio is inversely proportional to the vehicle speed transmission ratio of the whole vehicle;
and the output module is used for adjusting the ratio when the transmission ratio of the vehicle speed of the whole vehicle is changed, measuring the inherent output frequency of the instrument according to the frequency of the changed vehicle speed sensor input instrument, and outputting the vehicle speed according to the inherent output frequency of the instrument.
The system for outputting different vehicle speeds by the automobile instrument, disclosed by the embodiment of the application, is characterized in that the fixed gear transmission ratio is preset firstly, the inherent output frequency of the instrument can be measured, then the ratio of the inherent output frequency of the instrument to the frequency of the vehicle speed sensor input instrument is measured according to the obtained inherent output frequency of the instrument and the frequency of the vehicle speed sensor input instrument, the ratio is inversely proportional to the vehicle speed transmission ratio of the whole vehicle, when the vehicle speed transmission ratio of the whole vehicle is changed, the ratio is adjusted to enable the instrument to output the inherent frequency, therefore, electrical equipment for receiving a vehicle speed signal sent by the instrument, such as a driving recorder, a BCM (binary coded decimal) or a remote controller, can realize the identification of the corresponding frequency of the vehicle speed only by calibrating the preset fixed gear transmission ratio, does not need to be calibrated again, and can meet the requirement that the driving recorder or the remote controller is adaptive to the vehicle speed acquisition of the whole vehicle with different vehicle speed ratios, the change along with the change of the speed ratio of the whole automobile is avoided, the misloading rate of parts is reduced to 0%, so that the management and maintenance cost is greatly reduced, the system cost of outputting different automobile speeds by the automobile instrument is lower, and the application prospect is better.
Further, in the embodiment of the present application, the calculation formula of the natural output frequency of the meter is:
the inherent output frequency of the meter is the vehicle speed, preset fixed gear transmission ratio, pulse number/3600.
Further, in the embodiment of the present application, the calculation formula of the frequency of the vehicle speed sensor input meter is:
and the frequency of the vehicle speed sensor input instrument is the vehicle speed and the whole vehicle speed transmission ratio is the pulse number/3600.
Further, in the embodiment of the present application, the calculation formula of the ratio of the natural output frequency of the meter and the frequency of the vehicle speed sensor input meter is:
the ratio is a preset fixed gear transmission ratio/vehicle speed transmission ratio of the whole vehicle.
In the embodiment of the application, the electrical equipment receiving the vehicle speed signal sent by the instrument calibrates the fixed gear transmission ratio 637, so that the identification of the corresponding frequency of the vehicle speed can be realized, and the change can be realized in real time according to the vehicle speed, so that the electrical equipment with one speed ratio model can meet the requirements of transmission ratios of different finished vehicles.
By using the system for outputting different vehicle speeds by the automobile instrument, the use cost of electrical equipment, such as a driving recorder, a BCM (binary coded decimal) or a remote controller, can be effectively reduced by 15 yuan per vehicle, meanwhile, the management and maintenance cost of parts is also effectively reduced, and the cost can be reduced by 150/10 ten thousand in three years.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A method for outputting different vehicle speeds by an automobile instrument is characterized by comprising the following steps:
measuring the inherent output frequency of the instrument through a preset fixed gear transmission ratio;
according to the frequency of the vehicle speed sensor input instrument and the natural output frequency of the instrument, the ratio of the natural output frequency of the instrument to the frequency of the vehicle speed sensor input instrument is measured, and the ratio is inversely proportional to the vehicle speed transmission ratio of the whole vehicle;
when the transmission ratio of the vehicle speed of the whole vehicle is changed, the ratio is adjusted, the natural output frequency of the instrument can be measured according to the frequency of the changed vehicle speed sensor input instrument, and the vehicle speed is output according to the natural output frequency of the instrument.
2. The method for outputting different vehicle speeds by an automobile instrument according to claim 1, wherein the calculation formula of the natural output frequency of the instrument is as follows:
the inherent output frequency of the meter is the vehicle speed, preset fixed gear transmission ratio, pulse number/3600.
3. The method for outputting different vehicle speeds by an automobile instrument according to claim 2, wherein the calculation formula of the frequency of the vehicle speed sensor input instrument is as follows:
and the frequency of the vehicle speed sensor input instrument is the vehicle speed and the whole vehicle speed transmission ratio is the pulse number/3600.
4. The method for outputting different vehicle speeds by an automobile instrument according to claim 3, wherein the calculation formula of the ratio of the natural output frequency of the instrument and the frequency of the vehicle speed sensor input instrument is as follows:
the ratio is a preset fixed gear transmission ratio/vehicle speed transmission ratio of the whole vehicle.
5. The method for outputting different vehicle speeds of an automobile instrument as set forth in claim 1, wherein the preset fixed gear ratio is 637.
6. The method for outputting different vehicle speeds by the automobile instrument according to the claim 1 is characterized in that the concrete process of outputting the vehicle speed according to the natural output frequency of the instrument is as follows: and outputting the vehicle speed through a hard wire.
7. A system for outputting different vehicle speeds by an automobile instrument is characterized by comprising:
the setting module is used for measuring the inherent output frequency of the instrument according to a preset fixed gear transmission ratio;
the calculation module is used for measuring the ratio of the inherent output frequency of the instrument to the frequency of the vehicle speed sensor input instrument according to the frequency of the vehicle speed sensor input instrument and the inherent output frequency of the instrument, and the ratio is inversely proportional to the vehicle speed transmission ratio of the whole vehicle;
and the output module is used for adjusting the ratio when the transmission ratio of the vehicle speed of the whole vehicle is changed, measuring the inherent output frequency of the instrument according to the frequency of the changed vehicle speed sensor input instrument, and outputting the vehicle speed according to the inherent output frequency of the instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011247423.5A CN114454716A (en) | 2020-11-10 | 2020-11-10 | Method and system for outputting different speeds of automobile by automobile instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011247423.5A CN114454716A (en) | 2020-11-10 | 2020-11-10 | Method and system for outputting different speeds of automobile by automobile instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114454716A true CN114454716A (en) | 2022-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011247423.5A Withdrawn CN114454716A (en) | 2020-11-10 | 2020-11-10 | Method and system for outputting different speeds of automobile by automobile instrument |
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| Country | Link |
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| CN (1) | CN114454716A (en) |
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2020
- 2020-11-10 CN CN202011247423.5A patent/CN114454716A/en not_active Withdrawn
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Application publication date: 20220510 |