CN201828280U - Automobile combination instrument - Google Patents
Automobile combination instrument Download PDFInfo
- Publication number
- CN201828280U CN201828280U CN2010205728493U CN201020572849U CN201828280U CN 201828280 U CN201828280 U CN 201828280U CN 2010205728493 U CN2010205728493 U CN 2010205728493U CN 201020572849 U CN201020572849 U CN 201020572849U CN 201828280 U CN201828280 U CN 201828280U
- Authority
- CN
- China
- Prior art keywords
- speed ratio
- module
- speed
- instrument
- microprocessor
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Instrument Panels (AREA)
Abstract
The utility model provides an automobile combination instrument belonging to the technical field of automobile instruments and comprising a microprocessor chip, an instrument stepping motor control module, a pulse width signal collecting module, a display module, a signal indicator lamp control module and an A/D (analog/digital) conversion control module, wherein the output end of a speed sensor is connected with a pulse width signal collecting and shaping circuit and then is connected with the microprocessor chip. A speed ratio adjusting module consists of an input device, a storage device and a display module. In the utility model, the speed ratio adjusting module is additionally arranged in the instrument, therefore, the instrument can be adjusted according to the parameters of a main engine plant without altering hardware or software, and the universal property of the instrument is increased, therefore, an external adjusting module can be cancelled.
Description
Technical field
The utility model belongs to the electronic applications of automobile, especially relates to a kind of automobile combination meter.
Background technology
Flourish along with auto manufacturing, it is more and more obvious in leading position that China makes industry.Vehicle-mounted combination instrument is before being positioned in driver and bearing circle, mainly is to concentrate the travel conditions that the vehicle in advancing is provided to the driver.The travel conditions of vehicle is expressed as series of parameters at this.This some of them parameter must be given the driver with the real-time indication of the form of indicator, some parameters in addition must with digital form real-time be shown to the driver.
Vehicle-mounted combination instrument is made up of vehicle speed sensor (be installed on the worm screw of wheel box Worm-gear assembly on the wheel, photoelectric coupling type and magneto-electric are arranged), microprocessor system and display.Photoimpact or magnetoelectricity pulse signal by sensor transmits after the MICROCOMPUTER PROCESSING of gauge internal, can show the speed of a motor vehicle on display screen.Mileometer is calculated and the demonstration mileage by MICROCOMPUTER PROCESSING then according to the speed of a motor vehicle and accumulated running time.
Because various vehicles still are its speed of a motor vehicle driving shaft revolution of vehicle of the same race all can be different, and the difference of driving shaft revolution has determined the difference of speed ratio, the ordinary numbers instrument all has only single fixed speed ratio at present, lack certain versatility, thereby existing supporting general instrument is in order to solve the speed ratio matching problem, an all special supporting speed ratio adjustment control, so this controller is not only to have increased cost, the not high defective of being exported simultaneously of pulsed frequency precision.
China utility model 93223925.0(was on June 8th, 1994 in open day) provide a kind of speedometer adjustable speed to compare processor, it adopts photoelectric sensor to replace the flexible axle transmission, processor circuit adopts electronic component, processor is provided with one group of switch or potentiometer, the speed ratio of instrument can be adjusted flexibly, adapt to most chassis parameter, can be connected with multiple display device, and needn't change processor circuit.
Existing instrument is matching used with the chassis mostly, and the speed ratio of instrument is consistent with the flexible axle speed ratio on chassis.The matching used single fixed speed ratio of fixed underpan in case be used for refitted car, then just cannot use.Current a lot of disposal route all be adopt one independently the speed ratio adjustment control regulate the pulse width signal modulation, allow the improper existence of this adjustment control increase the cost problem, also have the low problem of output waveform precision simultaneously.
Summary of the invention
The essential technique problem that the utility model is intended to solve is to provide a kind of speed ratio adjustable automobile combination meter arbitrarily, improves existing ordinary numbers gauge defect with this, has also cancelled independently Transmission Ratio Control device simultaneously.
At above essential technique problem, the corresponding technical solution scheme of the utility model is:
The automobile combination meter that a kind of speed ratio is adjustable, comprise microprocessor, instrument step motor control module, the pulse width signal acquisition module, display module, signal lamp control module and A/D conversion and control module, the output termination pulse width signal of vehicle speed sensor connects microprocessor after gathering shaping circuit, it is characterized in that microprocessor also is provided with the speed ratio adjustment module, the speed ratio adjustment module comprises input media, memory storage and display device, input media passes through button, or toggle switch or membrane keyboard input information, memory storage is in order to stored programme and the speed ratio value without machine that is used to control different main engine plants, display module, the output of input media connects the input interface of microprocessor.
Further, display module is static charactron or segmentation liquid crystal display and dot matrix screen liquid crystal display.
Consider the succinct of instrument, microprocessor comprises a button handover module, is used for determining its function according to the operation of button.Can select the speed ratio regulatory function behind the display device operation display interface, and carry out the switching of each keypress function.
The utility model microprocessor comprises speed ratio, and oneself tests module, determines the speed ratio value in order to gather speed of a motor vehicle frequency.Instrument is constantly gathered speed of a motor vehicle frequency by the energising of last checking table, and driver's speed of a motor vehicle of constantly stepping on the gas constantly increases, and when to a preset vehicle speed time, button is caught a fixing frequency numerical value, calculates speed ratio by microprocessor chip.
Use this instrument, the speed ratio value without machine that will control different main engine plants earlier is stored in the storer in advance, generating code table storehouse; According to the instruction of input media, in the code table storehouse, seek the speed ratio value of this machine again; With this speed ratio code storage, as the speed ratio code of the current input of microprocessor chip.
Automobile makes up instrument compared to existing technology, the utility model overcomes the problem of present ordinary numbers instrument versatility, vehicle speed sensor is input to instrument pulse width signal acquisition module pulsating wave with the speed data collection signal and is input to microprocessor chip, obtain certain pulsed frequency, determine speed ratio and show speed ratio by toggle switch or button, determine the correct corresponding relation of the frequency and the speed of a motor vehicle by display device.The utility model increases instrument speed ratio adjustment module function, can data directly be imported according to main engine plants' actual parameter, does not need other hardware of instrument or software are made amendment again, has increased instrument universal performance and convenience.
Description of drawings
Fig. 1 is the utility model automobile instrument structure diagram;
Fig. 2 is the utility model automobile instrument control principle figure figure;
Fig. 3 is a speed ratio adjustment module structural drawing;
Fig. 4 is the toggle switch synoptic diagram;
Fig. 5 is the speed ratio value code table of toggle switch;
Fig. 6 regulates the process flow diagram of speed ratio for toggle switch;
Fig. 7 regulates the process flow diagram of fixed speed ratio for button;
Fig. 8 regulates the process flow diagram of speed ratio arbitrarily for button;
Fig. 9 regulates the process flow diagram of speed ratio for checking table.
Figure 10 is a signal lamp control module circuit diagram;
Figure 11 is stepping electricity step motor control modular circuit synoptic diagram;
Figure 12 is step display module circuit diagram;
Figure 13 is step microcontroller circuit synoptic diagram;
Figure 14 is that leg speed is than adjustment module functional circuit schematic diagram;
Figure 15 is step pulse width signal (analog acquisition) acquisition module circuit diagram;
Figure 16 is step memory module circuit diagram.
Each P/N of accompanying drawing is described:
Accompanying drawing 1:
1 is tachometer gage; 2 is speedometer; 3 is fuel level gauge; 4 is first rain glass; 5 is water-thermometer; 6 is second rain glass; 7 is first button (regulating input button backlight); 8 is liquid crystal display; 9 is that second button (speed ratio adjusting input media) 10 is that first air pressure sensing feel device 14 be second baroceptor for speed probe 12 for vehicle speed sensor 13 for fuel-quantity transducer 11; 15 are the verification stand; 16 is cooling-water temperature sensor; 17 are the vehicle speed signal input; 18 is the triode ground level; 19 are the vehicle speed pulse input; 20 is microprocessor; 21 is toggle switch; 22 is keyswitch.
Embodiment
Specify technical solutions of the utility model by the following examples.
The adjustable automobile combination meter of speed ratio as depicted in figs. 1 and 2, its external structure comprises display part, several buttons and pulse input interface, and the display part is water-thermometer 5, fuel level gauge 3, speedometer 2, tachometer gage 1, first rain glass 4, second rain glass 6 and liquid crystal display 8.Input media comprises several buttons, as is used to regulate first button 7 of input button backlight and second button of regulating about speed ratio 9.
Fig. 2 is the utility model principle assumption diagram, and it comprises microprocessor MCU, instrument step motor control module, pulse width signal acquisition module, signal lamp control module, various sensor and A/D conversion and control module, and microprocessor is provided with the speed ratio adjustment module.
Microprocessor: this chip is the control center of all instrument, comprises the collection of data, calculates and drive controlling.
The step motor control module: chip MB90F927 carries inner step motor drive, be used for drive stepping motor the angle of walking about.
Pulse width signal acquisition module: the frequency that is used to gather pulse width signal.
Signal lamp control module: be used for showing the various pilot lamp of control.
A/D conversion and control module: be used to gather various analog signalses, such as water temperature, oil mass, voltage, air pressure, oil pressure or the like.
The speed ratio adjustment module comprises input media, memory storage and display module.
Input media: by button or toggle switch or membrane keyboard input information, simultaneously for confirming speed ratio information button;
Memory storage is in order to stored programme and the speed ratio value without machine that is used to control different main engine plants;
The liquid crystal display of display module comprises segmentation and dot matrix screen.
Various kinds of sensors such as vehicle speed sensor, speed probe, cooling-water temperature sensor, fuel-quantity transducer, the first rain glass sensor and the second rain glass sensor, vehicle speed sensor is connected microprocessor with speed probe by the pulse width signal Acquisition Circuit, cooling-water temperature sensor, fuel sensor, the first rain glass sensor and the second rain glass sensor are input to microprocessor by A/D conversion and control module, and microprocessor drives each step motor control module drive speedometer according to input value, tachometer gage, first rain glass, second rain glass, fuel level gauge and water-thermometer turn to corresponding angle to show.
Or the signal that vehicle speed sensor is sent is a square wave eurymeric ripple, and that voltage magnitude is generally 8-24V is in the majority.The frequency of waveform becomes certain linear ratio with the speed of a motor vehicle, the high more vehicle speed of frequency is big more, otherwise just low more.Instrument is come calculated rate by gathering waveform, learns the speed of a motor vehicle by microprocessor chip, and the correct speed of a motor vehicle is shown by instrument.
Therefore the function that will carry out of instrument hardware is to be amplitude that the pulsating wave of 8-24V is converted into the pulsating wave that amplitude is 5V, can adopt final frequency by the input capture of microprocessor chip.
The utility model instrument will realize that speed ratio is adjustable arbitrarily with four kinds of modes.
First kind of mode can realize that speed ratio is adjustable by toggle switch, and this mode is applicable to the situation that speed ratio is less and speed ratio is fixing,
The second way uses button to select fixing several speed ratios adjustable, is applicable to the situation that speed ratio is less and relatively more fixing.
The third mode uses a button to realize that speed ratio is adjustable arbitrarily, makes it convenient and swift.Be applicable to a lot of and not enough very clear and definite situation of speed ratio of speed ratio.
The 4th kind of mode realizes the speed ratio automatic and adjustable by the verification stand.Be applicable to a lot of and speed ratio of speed ratio does not know it is what situation.
The revolution that 1 kilometer variator instrument of vehicle speed mileage table definition running car output shaft rotates, in electronic instrument, can be regarded as the revolution that vehicle speed sensor is changeed, when calculating with 1 kilometer rolling circumference divided by wheel, promptly obtain the revolution of driving shaft, next step calculating needs vehicle speed sensor to arrive the drive path of driving shaft, the speed of a motor vehicle interface that general vertical postpone is driven is on variator, his drive path is that driving shaft is passed to vehicle speed sensor to rear-end gear reduction to transmission shaft then to variator instrument transmission, the rear-end gear reduction ratio of gear is known in this requirement, variator instrument transmission ratio of gear, multiply by the rear-end gear reduction ratio of gear with the driving shaft revolution, is exactly the instrument speed ratio divided by variator instrument transmission ratio of gear afterwards.Adopt horizontal forerunner's mode but car is general, its route is directly passed to variator instrument transmission by driving shaft and is passed to vehicle speed sensor then, as long as with being exactly instrument speed ratio afterwards with the driving shaft revolution divided by variator instrument transmission ratio of gear.Also there is sensor directly to be connected on driving shaft, the instrument speed ratio is exactly the driving shaft revolution, the umber of pulse (have 4,6,8 etc.) that speed ratio multiply by the sensor revolution more promptly is every kilometer umber of pulse K, mileometer is whenever received K pulse and is just counted 1 kilometer, K promptly is the frequency of 1 kilometer of speed per hour divided by 3600, multiply by the frequency that different speed per hours just obtains different speed per hours.
Learn the relation of the speed ratio and the speed of a motor vehicle by above explanation.Know that speed just can obtain certain speed of a motor vehicle than the back.Be that the speed of a motor vehicle is in frequency calculating formula: Frequency=X*K/3600 below
Frequency: 1 kilometer frequency hourly of speed per hour.K: speed ratio.X: the umber of pulse of sensor revolution.
Vehicle speed sensor arrives triode input end 18, the switching function that utilizes the triode conducting and close by inserting speed data collection signal input part 17 by processing of circuit among Fig. 3.Thereby the pulse that realizes 5V enters microprocessor 20 and obtains certain pulsed frequency.Utilize toggle switch 21 or keyswitch 22 to decide speed ratio, and can show speed ratio, finally confirmed the relation of the frequency and the speed of a motor vehicle by liquid crystal display 8.
Below will describe the implementation of using the utility model method in detail.
Scheme one: utilize toggle switch to realize that speed is adjustable
Input media such as Fig. 4 are toggle switch.When from left to right be respectively carry out coding height to low level.Being 1 when toggle switch is up dialled, is 0 in the time of past setting aside, and accompanying drawing 5 then is the pairing speed ratio of dial-up table.
Detailed implementation is to comprise following several functional module step shown in the accompanying drawing 6:
Instrument energising operation, load module is differentiated dial-up table numerical value, thereby by searching the speed ratio memory module dial-up table of Fig. 4 just, find corresponding speed ratio, thereby confirmed speed ratio, calculate the speed of a motor vehicle accordingly by speed of a motor vehicle computing formula, go to corresponding position by step motor drive module drive pointer at last.
Frequency=X*K/3600
Frequency: 1 kilometer frequency hourly of speed per hour.K: speed ratio.X: the umber of pulse of sensor revolution.
The vehicle speed computing formula is: Speed=F/ Frequency
F: the frequency of seizure
Plant key function switching method, be applied in the electronic installation, it is characterized in that this method may further comprise the steps: make this electronic installation generate, set the option that whether activates the specific keys handoff functionality for the user by the keyswitch function operation-interface; Make this electronic installation store the option content that this sets by the keyswitch function operation-interface; Make this electronic installation in the process that the start oneself detects, read the setting option content of storage, also that this content is temporary to internal storage location; Whether and to make this electronic installation detect this button in the process that button is used be this specific keys that is set with handoff functionality, if this is set with the specific keys of handoff functionality, when then the option content of keeping at this internal storage location is activation, carry out the switching of this specific keys function.
The input pattern switch key
Scheme two: utilize keyswitch to realize that fixing several speed ratios are adjustable.
Input media is more than one button.The button of existing combination instrument is to be used for that the branch mileage switches and total points mileage interface is regulated mutually originally.And can utilize this button to realize the speed ratio control method now fully.
Implementation such as accompanying drawing 7:
The instrument operation that powers on, button handover module (1) identifying information display interface state, enter interface for password input at the speed ratio interfacial state by carrying out cryptographic function module (2), the input proper password is crossed and is jumped to the selection that speed ratio adjustment module function (3) realizes speed ratio about 5S automatically, has finally confirmed speed ratio.
Calculate the speed of a motor vehicle accordingly by speed of a motor vehicle computing formula, go to corresponding position by step motor drive module drive pointer at last.
Frequency=X*K/3600
Frequency: 1 kilometer frequency hourly of speed per hour.K: speed ratio.X: the umber of pulse of sensor revolution.
The vehicle speed computing formula is: Speed=F/ Frequency
F: the frequency of seizure
Scheme three: utilize the real any speed ratio of keyswitch adjustable.
Implementation is an accompanying drawing 8
The instrument working procedure that powers on, button handover module (1) identifying information display interface state, enter cryptographic interface at the speed ratio interfacial state by carrying out cryptographic function module (2), the input proper password is crossed and is jumped to speed ratio adjustment module function (3) about 5S automatically and execute in the adjustment module function (3) 5 seconds motionless, then can confirm speed ratio automatically, deposit memory module (4) EEPROM afterwards in.Instrument powers on then and can be from the EEPROM the inside next time
Scheme four: realize that by the verification stand speed ratio automatic and adjustable calls out the speed ratio that configured last time.
Automatically speed ratio is regulated should a calibration reference point, account for and will be decided to be 40KM/H.
Implementation such as Fig. 9, checking table energising (1) on the instrument, button handover module (2) identifying information display interface state, enter cryptographic interface at the speed ratio interfacial state by carrying out cryptographic function module (3), the input proper password is crossed and is jumped to speed ratio about 5S automatically and begin constantly to gather speed of a motor vehicle frequency from testing module (4) instrument.Driver's speed of a motor vehicle of constantly stepping on the gas constantly increases.When to a preset vehicle speed, immediately press the instrument button, pulsewidth acquisition module (5) also can be caught a fixing frequency numerical value this moment.This moment instrument also can be calculated speed ratio.
Formula is: speed ratio K=F*3600/ (X*Y).
K: speed ratio.X: the umber of pulse of sensor revolution.F: the frequency of seizure.Y: the speed of a motor vehicle that provides before the verification.
Determine to calculate the speed of a motor vehicle accordingly by speed of a motor vehicle computing formula behind the speed ratio, go to corresponding position by step motor drive module drive pointer at last.
Frequency=X*K/3600
Frequency: 1 kilometer frequency hourly of speed per hour.K: speed ratio.X: the umber of pulse of sensor revolution.
The vehicle speed computing formula is: Speed=F/ Frequency
F: the frequency of seizure
In sum; after those of ordinary skill in the art reads the utility model file; need not creative brainwork according to the technical solution of the utility model and technical conceive and make other various corresponding conversion scheme, all belong to the scope that the utility model is protected.
Claims (4)
1. automobile combination meter that speed ratio is adjustable, comprise microprocessor, instrument step motor control module, the pulse width signal acquisition module, display module, signal lamp control module and A/D conversion and control module, the output termination pulse width signal of vehicle speed sensor connects microprocessor after gathering shaping circuit, it is characterized in that microprocessor also is provided with the speed ratio adjustment module, the speed ratio adjustment module comprises input media, memory storage and display device, input media passes through button, or toggle switch or membrane keyboard input information, memory storage is in order to stored programme and the speed ratio value without machine that is used to control different main engine plants, display module, the output of input media connects the input interface of microprocessor.
2. the adjustable automobile combination meter of speed ratio as claimed in claim 1 is characterized in that display module is static charactron or segmentation liquid crystal display and dot matrix screen liquid crystal display.
3. the adjustable automobile combination meter of speed ratio as claimed in claim 2 is characterized in that microprocessor comprises a button handover module, is used for determining its function according to the operation of button.
4. the adjustable automobile combination meter of speed ratio as claimed in claim 3, oneself tests module to it is characterized in that comprising speed ratio by microprocessor, determines the speed ratio value in order to gather speed of a motor vehicle frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205728493U CN201828280U (en) | 2010-10-22 | 2010-10-22 | Automobile combination instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205728493U CN201828280U (en) | 2010-10-22 | 2010-10-22 | Automobile combination instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201828280U true CN201828280U (en) | 2011-05-11 |
Family
ID=43966807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205728493U Expired - Lifetime CN201828280U (en) | 2010-10-22 | 2010-10-22 | Automobile combination instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201828280U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003978A (en) * | 2010-10-22 | 2011-04-06 | 金华市金开电子技术有限公司 | Automotive combined instrument and speed ratio adjusting method |
| CN103163316A (en) * | 2013-03-26 | 2013-06-19 | 航天科技控股集团股份有限公司 | Drive circuit for automobile engine speed recorder |
| CN103231657A (en) * | 2013-05-14 | 2013-08-07 | 山东天海科技股份有限公司 | Intelligent multifunctional electric automobile instrument panel |
| CN110108311A (en) * | 2019-04-30 | 2019-08-09 | 中国人民解放军海军潜艇学院 | Pointer rotation indicator can be corrected |
-
2010
- 2010-10-22 CN CN2010205728493U patent/CN201828280U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003978A (en) * | 2010-10-22 | 2011-04-06 | 金华市金开电子技术有限公司 | Automotive combined instrument and speed ratio adjusting method |
| CN103163316A (en) * | 2013-03-26 | 2013-06-19 | 航天科技控股集团股份有限公司 | Drive circuit for automobile engine speed recorder |
| CN103231657A (en) * | 2013-05-14 | 2013-08-07 | 山东天海科技股份有限公司 | Intelligent multifunctional electric automobile instrument panel |
| CN110108311A (en) * | 2019-04-30 | 2019-08-09 | 中国人民解放军海军潜艇学院 | Pointer rotation indicator can be corrected |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102003978B (en) | Automotive combined instrument and speed ratio adjusting method | |
| CN101470017B (en) | Method for real-time vehicle oil quantity monitoring and oil consumption statistics through wireless network | |
| CN101509791B (en) | Automobile digitalization instrument controlling and displaying method and device | |
| CN102980624A (en) | Automobile fuel quantity signal indicating system and fuel quantity computing method | |
| CN201828280U (en) | Automobile combination instrument | |
| CN106641231B (en) | Line traffic control selector gear self-learning method, system and line traffic control selector system | |
| CN101556160B (en) | Onboard navigation system and method capable of realizing vehicle speed signal self-learning | |
| CN101013038B (en) | Transmission electronic odometer speed-measuring system and method | |
| CN102538890A (en) | Method and device for obtaining course continuation mileage of motor vehicle | |
| CN105069860A (en) | Method for vehicle oil consumption statistics | |
| CN202453017U (en) | Fuel consumption display device of automobile | |
| CN108443485A (en) | A kind of MT shift speech prompting devices based on vehicle fuel economy | |
| CN202676254U (en) | Quality test device of LABVIEW-based electric resistance type oil level sensor | |
| CN101556174B (en) | Intelligent vehicle oil amount measurement detection system | |
| CN102877953B (en) | Engine speed control system and engineering machine | |
| CN201885773U (en) | GPS (Global Positioning System) digital automobile fuel metering system | |
| CN201060207Y (en) | Stepping motor type engine speed hours meter | |
| CN104344865A (en) | Automobile fuel signal processing method and automobile fuel signal processing system | |
| CN209756807U (en) | Intelligent display system of digital combination instrument of forklift | |
| KR101442137B1 (en) | User equipment for displaying a status information of a car and method therefor | |
| US4223553A (en) | Engine efficiency meter | |
| CN205898179U (en) | Motormeter coils automatic check out system based on angle sensor | |
| CN201457088U (en) | Digital automobile meter automatically calibrated by analog signal sampling | |
| CN201828560U (en) | Compression ratio and octane number indicating device in gasoline octane number determinator | |
| CN109682443A (en) | A kind of control method of automobile fuel gauge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110511 Effective date of abandoning: 20120523 |