CN201457086U - CAN bus instrument - Google Patents
CAN bus instrument Download PDFInfo
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- CN201457086U CN201457086U CN2009200730649U CN200920073064U CN201457086U CN 201457086 U CN201457086 U CN 201457086U CN 2009200730649 U CN2009200730649 U CN 2009200730649U CN 200920073064 U CN200920073064 U CN 200920073064U CN 201457086 U CN201457086 U CN 201457086U
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Abstract
The utility model discloses a CAN bus instrument comprising a shell and a circuit board in the shell. The circuit board comprises a power supply module, a singlechip, a display module connected with the singlechip and a vehicle signal acquisition module, wherein the circuit board also comprises an indication module for displaying vehicle states and alarm information, a data storage module for storing the important data of mileage, and the like in case of no system power supply, a step motor control module controlling a motor to run and a CAN communication module connected with a vehicle CAN bus; the shell is also provided with a backlight structure and an LED as the backlight of an LCD screen, and the backlight structure is also provided with a light-distributing sheet. The utility model improves the indication precision of a pointer, simplifies the complicated connection of instrument assembly cords to have simple structure, and has the advantages of accurate data indication, convenient mounting and maintenance, great information display amount of vehicle states and attractive appearance, low failure rate and high communication rate thereby being suitable for various vehicles.
Description
Technical field
The utility model relate in the auto meter of CAN bus, relate in particular to the CAN field bus instrument that a kind of vehicle uses.
Background technology
The instrument of different Automobile instruments is not quite similar, but the conventional instrument of general automobile has car speed mileage table, speed gage, oil pressure gauge, water thermometer, fuel gage, chargometer etc.On the modern automobile, auto meter also needs the device voltage stabilizer, is used for the stabilized instrumentation power source voltage specially, suppresses fluctuating range, to guarantee the particularity of auto meter.In addition, the foundation that most of instrument shows is from sensor, and sensing device changes its resistance value according to the state variation of monitored target, explains out by instrument.
Along with the development of vehicle electronic device, more and more Duo vehicle all is to have used based on the bus type electrical structure, and CAN bus and LIN bus are two kinds of more common bus architecture.Wherein, CAN is the abbreviation (hereinafter referred to as CAN) of ControllerArea Network, is the serial communication protocol of ISO international standarkdization.The CAN bus be German BOSCH company from the beginning of the eighties for solving a kind of serial data communication agreement that control numerous the modern automobile and the data exchange between the testing tool are developed, it is a kind of multi-master bus, and communication media can be twisted-pair feeder, coaxial cable or light transmitting fiber.In current automobile industry, for to safety, traveling comfort, comfort feature, low public hazards, requirement cheaply, various electronic control systems have been developed.Because the requirement that the data type that signal post uses between these systems reaches reliability is not quite similar, situation about being made of multiple bus is a lot, and the quantity of wire harness also increases thereupon.For adapting to the needs of " quantity that reduces wire harness ", " by a plurality of LAN, carrying out the high-speed communication of mass data ", after this, CAN has carried out normalisation by ISO11898 and ISO11519, has been the standard agreement of automotive networking in Europe now.
At present, having used the bus type instrument mostly at small-sized Passenger motor vehicle, is not very extensive and use in passenger vehicle and large engineering vehicle field.The most integrated vehicle-state of existing field bus instrument shows, alarm message shows and part vehicle load controllable function, generally comprises power module, the signals of vehicles Acquisition Circuit, signal processing circuit, signal output apparatus, power output circuit, bus communication module, motor drive module etc.
But conventional instrument generally links to each other with switch, sensor and other electronic controllers with the wire harness form, so just causes the vehicle harness complexity, poor reliability, problems such as maintenance and installation difficulty; Mostly be the magnetic driven driving and be used for pointer displayed, precision is low, damages easily.
The utility model content
At the deficiency that exists on the prior art, the utility model provides the CAN field bus instrument that a kind of simple in structure, data indication is accurate, convenient for installation and maintenance, car status information demonstration amount is big.
To achieve these goals, the utility model is to realize by the following technical solutions:
A kind of CAN field bus instrument, comprise watchcase, circuit card in the watchcase, described circuit card comprise power module, micro controller system, with micro controller system bonded assembly display module, real-time clock module and signals of vehicles acquisition module, it is characterized in that, comprise also on the described circuit card that the data memory module that stores significant datas such as mileage under the situation of an indicating module that shows vehicle-state and alarm message, no system power supply, the step motor control module of a control motor rotation are connected the CAN communication module of vehicle CAN bus with one; Described indicating module, data memory module, step motor control module and CAN communication module all are connected with micro controller system. and described display module is provided with LCD display, this LCD display can show appreciiable information, as the Chinese demonstration of the indication of various states, the indication of various numerical value, various information etc., and can provide CAN information to carry out the vehicle-state diagnosis according to other electronic controllers on the vehicle, also can adjust software increase some functions (engine diagnosis, oil consumption demonstration etc.) based on CAN information, flexible and convenient to use.
Also be provided with backing structure and LED in the described watchcase, described LED is backlight as LCD display, and for avoiding the inhomogeneous LCD of the influence display effect of light, on the backing structure of this instrument, be designed to curved surface and be equipped with an equal mating plate make the light of LED evenly to be scattered in the LCD back side, improved the LCD display effect.
Also be provided with real-time clock module on the described circuit card.Described real-time clock module can provide the time to be used for time showing on the LCD, also can be used for timing start-up, shutdown.
Described step motor control module improves the accuracy rate of pointer indication as important car status information display terminals such as the speed of a motor vehicle, engine speed, engine cooling water water temperature, fuel liquid level, vehicle power supply voltage, engine oil pressures.
Described signals of vehicles acquisition module comprises that one is connected with the master cock of vehicle, is used for the configurable load module of collection vehicle switch input signal; One connects the vehicle parameter sensor, is used for an analog input module and a keyboard input module by key input signal that the collection vehicle parameter signal is signals such as water level, oil level, voltage, oil pressure, air pressure.
Described analog quantity input can be high value input or low resistance input according to software arrangements, guarantees the accurate detection of analog quantity.
Described configurable load module also is provided with counter-current output, supplies with other controllers and is used for fault detection and offers dynamo field coil using.
Described data memory module can be stored significant datas such as mileage, vehicle load fault when system works, and guarantees still that when system finishing work and when not having externally fed data do not lose.
Described indicating module is provided with the LED of high-light long-life, and backlight as alarm message symbol sheet.
Described display module is the LCD LCDs, is high-resolution LCDs.This LCD LCDs can show very many information, as the Chinese demonstration of the indication of various states, the indication of various numerical value, various information etc., and can provide CAN information to carry out the vehicle-state diagnosis according to other electronic controllers on the vehicle, also can adjust software increase some functions (engine diagnosis, oil consumption demonstration etc.) based on CAN information, flexible and convenient to use.
The utility model will be original on instrument power output change control logic information into and be transferred to other power output module with the form of CAN information and export, do not have power output to reduce its degree of heat on the instrument, improved its reliability, guarantee smooth operation.
Also be connected with the buzzer phone of warning effect on the described micro controller system.Described buzzer phone be the frequency conversion buzzer phone as sound prompting, chaufeur can be judged the order of severity that vehicle break down according to different sound, makes things convenient for chaufeur that fault is made respective handling.
Described switch input is connected with the wire harness form with the master cock of vehicle, be used for the collection vehicle switch input signal, the LED-backlit that incoming signal will be used to control the corresponding symbol sheet is found out fault alarm kind driving buzzer phone and is reported to the police accordingly to show fault alarm or car status information after micro controller system (MCU) is handled.
Described analog quantity input is connected with the wire harness form with the vehicle parameter sensor, is used to gather the incoming signal of sensors such as water level, oil level, voltage, oil pressure, air pressure.
Described micro controller system is selected for use is 16 micro controller systems at a high speed, and has adopted four layers of Au-plated board, guarantees that numerous signals can in time be handled and not disturb mutually the raising reliability.
The power supply output that has 12V and 5V on the described watchcase is to satisfy the power supply requirement of various kinds of sensors; Instrument has the real-time clock function, can accurately indicate current date Hour Minute Second.
Above-mentioned switch input information, analog quantity input information have CAN information to provide Shi Junke to use the CAN communication to replace at other controllers, further reduce vehicle and are connected with the wire harness of instrument cubicle.
The utility model power module links to each other with the vehicle supply module, the LED-backlit that the incoming signal that input module switch receives will be used to control the corresponding symbol sheet is found out fault alarm kind driving buzzer phone and is reported to the police accordingly to show fault alarm or car status information after MCU handles; The analog quantity input is connected with the wire harness form with the vehicle parameter sensor, gather the incoming signal of sensors such as water level, oil level, voltage, oil pressure, air pressure, after MCU handles, be converted into the step motor control signal and send the step motor control module to, step motor control module drive stepping motor, the indication of drive pointer, if when the data after MCU handles reach the warning limit value, MCU will control corresponding LED and buzzer warning, and partial information is presented on the LCD; The CAN communication module can carry out information exchange with other controllers to be handled via MCU and is converted into fault, status information and is used for outputs such as steering needle, symbol sheet, LCD LCDs, buzzer phone and carries out that state shows and warning.
The utility model has improved the accuracy rate of pointer indication by step motor control module, signals of vehicles acquisition module and LCD LCD MODULE are installed, and is flexible and convenient to use; Can use wire harness and CAN information to originate as incoming signal simultaneously, the situation on can be according to vehicle concrete is selected the input information source, reduces the use of wire harness as much as possible, and the complexity that reduces the instrument assembly clue connects, and makes simple in structurely, and fault rate is low; And have two-way CAN controller, and can be used as gateway and use, both can use the J1939 agreement to carry out the information transmission, but also custom protocol carry out the information transmission with other controller communications, the traffic rate height has improved reliability and alerting ability; Adopt the frequency conversion buzzer phone as sound prompting in addition, made things convenient for chaufeur that fault is made respective handling.The utlity model has that data indications is accurate, convenient for installation and maintenance, car status information demonstration amount big and the advantage of good looking appearance, be applicable to different vehicles.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is an inner structure scheme drawing of the present utility model.
Fig. 2 is the system chart that is applied in the vehicle of the present utility model.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with the specific embodiment, further set forth the utility model.
With reference to figure 1, a kind of CAN field bus instrument comprises the circuit card in watchcase, the watchcase; This circuit card comprises power module 200, micro controller system 110, with micro controller system 110 bonded assembly display modules be LCD display module 130, signals of vehicles acquisition module 120, the indicating module that shows vehicle-state and alarm message is a LED indicating module 140, store the data memory module 170 of significant data such as mileage under the situation of no system power supply, with the step motor control module 150 of vehicle CAN bus bonded assembly CAN communication module 160 and control motor rotation and be used for time showing and timing start-up on the LCD, the real-time clock module 180 of shutdown, described step motor control module 150 connects the stepping motor of instrument circuit plate, this stepping motor is as the speed of a motor vehicle, engine speed, the engine cooling water water temperature, fuel liquid level, the vehicle power supply voltage, important car status information display terminal such as engine oil pressure, improve the accuracy rate of pointer indication. in the utility model, the status information that signals of vehicles acquisition module 120 receives is sent to micro controller system 110, this status information comprises the speed of a motor vehicle, engine speed, water temperature, information such as oil mass, after handling, micro controller system 110 sends information to car body other control by CAN communication module 160, as controller engine electronic control unit (ECU) and other ECU (Electrical Control Unit) of vehicle, or send LCD display module 130 to, LED indicating module 140 and step motor control module 150.
In the utility model, described signals of vehicles acquisition module 120 comprises that one is connected with the master cock of vehicle, is used for the configurable load module 121 of collection vehicle switch input signal; One connects the vehicle parameter sensor, is used for the analog input module 122 and the keyboard input module 123 by key input signal of signals such as collection vehicle parameter such as water level, oil level, voltage, oil pressure, air pressure.Wherein, signals of vehicles acquisition module 120 sends the switching value that collects, analog quantity, button input etc. to micro controller system 110 handled and sends.This micro controller system 110 is handled the information that each input port sends over as the central process unit of system, and is sent to other parts of car body as required once more, as display module or annunciator.In the present embodiment, micro controller system 110 is selected for use is 16 micro controller systems at a high speed, circuit card and adopted four layers gold-plated, guarantee that numerous signals can in time be handled and not disturb mutually, improved reliability and alerting ability.
In the present embodiment, with reference to figure 2, have the output 210 of 12V and 5V power supply on the circuit card in the described watchcase to satisfy the power supply requirement of various kinds of sensors; On CAN field bus instrument 100, have real-time clock module 180, have the real-time clock function, can provide the time to be used for time showing on the LCD, accurately indicate current date Hour Minute Second, also can be used for timing start-up or shutdown, user-friendly.Described LCD display module 130 is the LCD LCDs of 100mmx30mm, the LCD LCDs of this 100mmx30mm can show very many information, as the Chinese demonstration of the indication of various states, the indication of various numerical value, various information etc., and can provide CAN information to carry out the vehicle-state diagnosis according to other electronic controllers on the vehicle, also can adjust software increase some functions (engine diagnosis, oil consumption demonstration etc.) based on CAN information, flexible and convenient to use.In addition, in watchcase, use high-brightness LED as the LCD LCD screen backlight, and for avoiding the inhomogeneous LCD of the influence display effect of light, on the backing structure of this instrument, be designed to curved surface and be equipped with an equal mating plate make the light of LED evenly to be scattered in the LCD back side, improved the LCD display effect.
In addition, in the present embodiment, with original on instrument power output change control logic information into and be transferred to other power output modules with the form of CAN information and export, do not have its degree of heat of power output the reduction on the instrument, improve its reliability, guaranteed smooth operation.On micro controller system 110, also be connected with the buzzer phone 190 of a warning effect, this buzzer phone 190 is the frequency conversion buzzer phone, use the frequency conversion buzzer phone as sound prompting, chaufeur can be judged the order of severity that vehicle breaks down according to different sound, makes things convenient for chaufeur that fault is made respective handling.The utility model adopts big quantity symbol sheet (nearly 53) to be used to show vehicle-state and alarm message, and it is backlight as alarm message symbol sheet that high-light long-life LED is installed in LED indicating module 140, is used to show vehicle-state and alarm message.
With reference to figure 2, in the utility model, power module 200 links to each other with the vehicle supply module, configuration load module 121 is connected with the wire harness form with the master cock of vehicle, be used for the input of collection vehicle switch, the LED-backlit that incoming signal will be used to control the corresponding symbol sheet is found out fault alarm kind driving buzzer phone and is reported to the police accordingly to show fault alarm or car status information after micro controller system (MCU) 110 is handled; Analog quantity load module 122 is connected with the wire harness form with the vehicle parameter sensor, gather the incoming signal of sensors such as water level, oil level, voltage, oil pressure, air pressure, after handling, micro controller system 110 is converted into the step motor control signal, step motor control module 150 drive stepping motor drive the pointer indication, when the data after if micro controller system 110 is handled reach the warning limit value, micro controller system 110 will control corresponding LED and buzzer phone 190 is reported to the police, and partial information is presented on the LCD LCDs; CAN communication module 160 is connected with vehicle CAN bus, can carry out information exchange with other controllers and handle via micro controller system 110 and be converted into fault, status information and be used for outputs such as steering needle, symbol sheet, LCD LCDs, buzzer phone and carry out that state shows and warning; Above-mentioned switch input information, analog quantity input information have CAN information to provide Shi Junke to use the CAN communication to replace at other controllers, further reduce vehicle and are connected with the wire harness of instrument cubicle.
And important information such as mileage, the vehicle load fault etc. of vehicle in operational process all can be stored by data memory module 170.
It should be noted that, above-mentioned various load modules can use wire harness and CAN information to originate as incoming signal simultaneously, and the situation on can be according to vehicle concrete selects the input information source, can reduce the use of wire harness as much as possible, goes for different vehicle simultaneously again.The utility model has two-way CAN controller, and this CAN communication module 160 can be used as gateway and uses, and both can use the J1939 agreement to carry out the information transmission with other controller communications, also can use custom protocol to carry out the information transmission.Wherein, this CAN communication module 160 by the CAN bus network of vehicle be connected with vehicle controller, start electric control unit and other ECU (Electrical Control Unit).
Based on above-mentioned, the utility model has the real-time clock function, can accurately indicate current date Hour Minute Second, and can carry out refresh routine and trouble diagnosing by computer, adopted the frequency conversion buzzer phone as sound prompting, make things convenient for chaufeur that fault is made respective handling, make the utlity model has simple in structure, the data indication is accurate, convenient for installation and maintenance, car status information demonstration amount big and the advantage of good looking appearance, is applicable to different vehicles.
More than show and described groundwork of the present utility model and principal character and advantage of the present utility model.The technical personnel of the industry should be understood; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification sheets just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (9)
1. a CAN field bus instrument comprises watchcase, the circuit card in the watchcase, described circuit card comprise power module, micro controller system, with micro controller system bonded assembly display module and signals of vehicles acquisition module, it is characterized in that,
Comprise also on the described circuit card that the data memory module that stores significant datas such as mileage under the situation of step motor control module, no system power supply of an indicating module that shows vehicle-state and alarm message, a control motor rotation is connected the CAN communication module of vehicle CAN bus with one, described CAN communication module is provided with the two-way CAN communication module as the gateway use; Described indicating module, data memory module, step motor control module and CAN communication module all are connected with micro controller system, described display module is provided with LCD display, also be provided with the LED of backing structure and and adjustable brightness backlight in the described watchcase, also be provided with equal mating plate on the described backing structure as LCD display.
2. a kind of CAN field bus instrument according to claim 1 is characterized in that, described signals of vehicles acquisition module comprises that one is connected with the master cock of vehicle, is used for the configurable load module of collection vehicle switch input signal; One connects the vehicle parameter sensor, is used for the analog input module that the collection vehicle parameter signal is water level, oil level, voltage, oil pressure, air pressure signal, and described analog quantity load module comprises configurable high value input and low resistance input; An and keyboard input module of pressing key input signal;
Described configurable load module also is provided with supplies with the counter-current output module that other controllers are used for fault detection and offer the dynamo field coil use.
3. a kind of CAN field bus instrument according to claim 1 is characterized in that described indicating module is provided with the LED of high-light long-life, and described LED is also backlight as alarm message symbol sheet.
4. a kind of CAN field bus instrument according to claim 2 is characterized in that, described analog quantity input is connected with the wire harness form with the vehicle parameter sensor.
5. a kind of CAN field bus instrument according to claim 1 is characterized in that, also is connected with the buzzer phone of warning effect on the described micro controller system.
6. a kind of CAN field bus instrument according to claim 5 is characterized in that described buzzer phone is the frequency conversion buzzer phone.
7. a kind of CAN field bus instrument according to claim 5 is characterized in that, described micro controller system is the micro controller system of 16 of high speeds.
8. a kind of CAN field bus instrument according to claim 1 is characterized in that, also is provided with the power supply output of 12V and 5V on the described circuit card.
9. a kind of CAN field bus instrument according to claim 1 is characterized in that, also is provided with the real-time clock module that is used for time showing and timing start-up, shutdown on the described circuit card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200730649U CN201457086U (en) | 2009-05-27 | 2009-05-27 | CAN bus instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200730649U CN201457086U (en) | 2009-05-27 | 2009-05-27 | CAN bus instrument |
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| Publication Number | Publication Date |
|---|---|
| CN201457086U true CN201457086U (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200730649U Expired - Lifetime CN201457086U (en) | 2009-05-27 | 2009-05-27 | CAN bus instrument |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103538539A (en) * | 2012-07-13 | 2014-01-29 | 法国大陆汽车公司 | Device and method for communication between an electronic module and a detection sensor comprising a light source |
| CN107422722A (en) * | 2017-09-14 | 2017-12-01 | 盐城工学院 | Automobile intelligent metering device and system |
| CN108757175A (en) * | 2018-08-01 | 2018-11-06 | 郑州森鹏电子技术有限公司 | A kind of CAN bus engine monitoring instrument and its control method |
| CN108859759A (en) * | 2018-06-25 | 2018-11-23 | 武汉科技大学 | Electric vehicle instrument system and its dispatching method |
| CN109774476A (en) * | 2018-12-28 | 2019-05-21 | 大陆汽车车身电子系统（芜湖）有限公司 | A kind of alarm display apparatus and instrument |
| CN114104162A (en) * | 2020-08-27 | 2022-03-01 | Tvs电机股份有限公司 | Display system for vehicle |
| CN114285881A (en) * | 2022-01-04 | 2022-04-05 | 青岛思锐科技有限公司 | Communication module of brake control system and brake control system |
-
2009
- 2009-05-27 CN CN2009200730649U patent/CN201457086U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103538539A (en) * | 2012-07-13 | 2014-01-29 | 法国大陆汽车公司 | Device and method for communication between an electronic module and a detection sensor comprising a light source |
| CN107422722A (en) * | 2017-09-14 | 2017-12-01 | 盐城工学院 | Automobile intelligent metering device and system |
| CN108859759A (en) * | 2018-06-25 | 2018-11-23 | 武汉科技大学 | Electric vehicle instrument system and its dispatching method |
| CN108859759B (en) * | 2018-06-25 | 2021-02-09 | 武汉科技大学 | Electric automobile instrument system and dispatching method thereof |
| CN108757175A (en) * | 2018-08-01 | 2018-11-06 | 郑州森鹏电子技术有限公司 | A kind of CAN bus engine monitoring instrument and its control method |
| CN108757175B (en) * | 2018-08-01 | 2023-07-04 | 郑州森鹏电子技术股份有限公司 | Control method of CAN bus engine monitor |
| CN109774476A (en) * | 2018-12-28 | 2019-05-21 | 大陆汽车车身电子系统（芜湖）有限公司 | A kind of alarm display apparatus and instrument |
| CN114104162A (en) * | 2020-08-27 | 2022-03-01 | Tvs电机股份有限公司 | Display system for vehicle |
| CN114104162B (en) * | 2020-08-27 | 2024-02-23 | Tvs电机股份有限公司 | Display system for vehicle |
| CN114285881A (en) * | 2022-01-04 | 2022-04-05 | 青岛思锐科技有限公司 | Communication module of brake control system and brake control system |
| CN114285881B (en) * | 2022-01-04 | 2024-04-30 | 中车制动系统有限公司 | Communication module of brake control system and brake control system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100512 |
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| CX01 | Expiry of patent term |