CN201126537Y - Bus type vehicle rain brush controller - Google Patents
Bus type vehicle rain brush controller Download PDFInfo
- Publication number
- CN201126537Y CN201126537Y CNU2007200889336U CN200720088933U CN201126537Y CN 201126537 Y CN201126537 Y CN 201126537Y CN U2007200889336 U CNU2007200889336 U CN U2007200889336U CN 200720088933 U CN200720088933 U CN 200720088933U CN 201126537 Y CN201126537 Y CN 201126537Y
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- windscreen wiper
- microcontroller
- pin
- controller
- nmos pipe
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The utility model discloses a bus type vehicular windshield wiper controller which comprises a microcontroller, a CAN communication unit, a windshield wiper driving control unit, a windshield wiper resetting state information collecting unit and a supporting circuit. The microcontroller is connected with the three units and the supporting circuit through the data bus. The utility model eliminates the windshield wiper hardware resetting mode and the windshield wiper intermission controller thereby prolonging the service lifetime of the windshield wiper and reducing the cost of the windshield wiper. The function can also be widened and the individualized customization can be realized facing the requirement of the user.
Description
Technical field
The utility model relates to vehicle electric field, especially relates to a kind of bus type automobile rain scrape controller.
Background technology
The function of wiper is by topworks the windshield wiper blade on the windscreen surface to be swung back and forth, thereby removes sleet or dirt on the windshield.The orthodox car windscreen wiper is realized topworks's changed speed operation by varying speed switch control motor, realizes that by hardware reset mode the shutdown of windscreen wiper resets, and realizes intermittently function of windscreen wiper by intermittent controller.
Along with the raising of people to vehicle dynamic quality, security and comfortableness requirement, automobile ECU (Electronic ControlUnit, electronic control unit) and electronic-controlled installation also in continuous increase, traditional point-to-point communication mode has not satisfied the automobile distribution needs of control in real time.The geometry formula of the number of conductors that causes owing to the continuous increase of electronic equipment increases, and also makes in limited interior space wiring more and more difficultly, has limited the expansion of automotive interior control function.On the other hand, automobile ECU is not only to link together simply with load equipment, more is to carry out information interchange with peripherals and other ECU, and through complicated control decision computing, sends steering order.In order to improve the utilization factor of signal, requirement bulk data information exchanges between different automobile ECUs and shares, adopt the In-vehicle networking technology to realize that the feasible real-time control to each ECU of automobile of integrated control of automobile electronic information becomes possibility, has solved the bottleneck problem of above-mentioned restriction automobile control technology development.All use the In-vehicle networking technology in the medium-to-high grade car to some extent, also gradually adopted advanced electron controls technology and In-vehicle networking technology on modern bus and the truck.In multiple In-vehicle networking technology, CAN (ControllerArea Network, controller local area network) is with its good operation characteristic, and promptly high reliability and unique design are particularly suitable for the interconnected communication between each ECU of Hyundai Motor.Therefore, traditional automobile rain scrape control method and the controller demand of the integrated control of incompatibility automobile electronic information; Must propose a kind of bus type automobile rain scrape control method, and design wiper controller corresponding, that possess bus interface, to satisfy the requirement of adopting bus to realize the integrated control of automobile information based on information integration control.
Chinese patent " screen wiper " (publication number CN 1415507) discloses a kind of size that is intended to real-time identification and detects rainfall (snowflake, sleet), is automatically operated in the intelligent wiper of optimum speed (shelves) state by single-chip microcomputer instruction wiper motor.Chinese patent " a kind of combined switch with embedded windshield wiper system " (publication number CN 1586954) discloses a kind of combined switch time control accuracy that is intended to improve, strengthen the combined switch of the band embedded windshield wiper system in combined switch life-span, comprise light handle, windscreen wiper handle and base.Chinese patent " a kind of vehicle wiper control device " (publication number CN200942756) discloses a kind of outside rainfall size of outside rain sensor perception that is intended to adopt, automobile wiper control device by master controller output windscreen wiper control signal comprises power supply that is connected with circuit and the wiper that is connected with the master controller output terminal.The weak point of above file is the software and hardware scheme that wiper controller bus chemical control system is not provided, and does not meet the requirement of automobile busization and electronic development trend.
The utility model content
Technical problem to be solved in the utility model is: provide a kind of based on bus, can realize wiper low speed and run up and stop, and can realize windscreen wiper the automatically reset control and the wiper controller of control function intermittently, to overcome the deficiency of existing wiper control technology.
The utility model solves its technical matters and adopts following technical scheme: comprise microcontroller, CAN communication unit, windscreen wiper driving control unit, windscreen wiper reset mode information acquisition unit and support circuit that microcontroller links to each other with the support circuit with described four unit by its data bus; Microcontroller inside is integrated with the CAN controller.
The utility model compared with prior art has following major advantage:
(1) do not change existing wiper topworks, bus interface is provided, can realize total line traffic control of wiper;
(2) can realize automatically reseting of windscreen wiper, replace the windscreen wiper hardware reset mode, improve windscreen wiper serviceable life;
(3) can realize that windscreen wiper intermittently controls, the cancellation Wiper intermittent controller has reduced the windscreen wiper cost.
(4) the function expansibility is strong, but the user oriented demand realizes that personalization is customized.
Description of drawings
Fig. 1 is the structural representation of the utility model bus type automobile rain scrape controller.
Fig. 2 is a windscreen wiper driving control unit circuit diagram among Fig. 1.
Fig. 3 is a windscreen wiper reset mode information acquisition unit circuit diagram among Fig. 1.
Embodiment
The utility model is described in further detail below in conjunction with example and accompanying drawing, but do not limit the utility model.
The bus type automobile rain scrape controller that the utility model provides, its structure is as shown in Figure 1: comprise microcontroller, CAN communication unit, windscreen wiper driving control unit, windscreen wiper reset mode information acquisition unit and support circuit, microcontroller links to each other with described four unit and support circuit by its data bus; Microcontroller inside is integrated with the CAN controller.
Described microcontroller can adopt 8 or 8 above single-chip microcomputers, for example can adopt the microcontroller of MC9S12XDP512 model.In order to realize the bus type control to wiper, its inside of the used microcontroller of present embodiment is integrated with the CAN controller.
Described CAN communication unit mainly is made of 1 CAN transceiver (can adopt the CAN transceiver of TJA1050 model) and 2 optical couplers, and wherein: the CAN order wire links to each other with the CANL pin with the CANH pin of CAN transceiver through filtering circuit; The reception data input pin of CAN transceiver links to each other with the signal input part of optical coupler, and is linked to each other with the CAN reception data pin of microcontroller by the signal output part of optical coupler; The CAN of microcontroller sends data pin and links to each other with the signal input part of optical coupler, and is linked to each other with the data transmission pin of CAN transceiver by the signal output part of optical coupler.
Described windscreen wiper driving control unit, its core component mainly are power drive chip UP1 (can adopt MC33288) and NMOS pipe (can adopt the product of IRF540 model).See Fig. 2: the output terminal OUT1 of UP1 links to each other with the grid of NMOS pipe Q1 after resistance R A05, RA06 dividing potential drop, and the drain electrode of NMOS pipe Q1 connects windscreen wiper High-speed Control end, the source ground of NMOS pipe Q1.The output terminal OUT2 of UP1 links to each other with the grid of NMOS pipe Q2 through resistance R A07, RA08 dividing potential drop, and the drain electrode of NMOS pipe Q2 connects windscreen wiper low speed control end, the source ground of NMOS pipe Q2.Diode DK2, DK3 are connected in parallel on respectively between the drain electrode and source electrode of NMOS pipe Q1, Q2, are used to suppress the impact of negative peak electric current to the NMOS pipe.The IN1 of UP1 and IN2 pin are used to receive the input control signal of microcontroller.The St of UP1 and CurR pin are the feedback of status pin, link to each other with A/D input port AN13 with micro controller I/O mouth PP0 respectively.
Described windscreen wiper reset mode information acquisition unit, its core parts are switching value input detection chip UP2, can adopt the chip of MC33993 model.See Fig. 3: UP2 communicates by letter by the SPI0 communication interface with microcontroller, and relevant pin is pin MOSI0, MISO0, SCK0 and the CS1 of UP2.The windscreen wiper reset signal detects a mouthful SP0 with the programmable switch amount of UP2 and links to each other after resistance R A03, RA04 dividing potential drop.
Because windscreen wiper reset mode information acquisition end connects automobile power source, when switch amount input detection chip UP2 carries out initialization, should be set to the high-end switch access module by its SP0 mouth.
Described support circuit mainly is made of power circuit, reset circuit, and wherein: power circuit is divided into two power modules, is respectively the power supply of wiper controller and CAN telecommunication circuit.
Above-mentioned ignition switch ACC is also replaceable to be ignition switch ON.
The course of work that brief description the utility model is total and the course of work of each unit.
The total course of work of the utility model is: the CAN communication unit receives wiper switch information and the ignition switch information of being sent by the driver by the CAN bus, handles the back by microcontroller and forms the windscreen wiper control information; After the windscreen wiper driving control unit received the windscreen wiper control information of microcontroller, the control windscreen wiper at a high speed or the switching on and off of low speed coil realized that windscreen wiper runs up, low-speed running and stopping; Then, windscreen wiper reset mode information acquisition unit detects the voltage status of windscreen wiper reset terminal, obtains windscreen wiper reset mode information, and is automatically reset by the microprocessor controls windscreen wiper; Microcontroller is intermittently implemented logic control based on windscreen wiper pause switch information and windscreen wiper reset mode information to windscreen wiper.
The control procedure of windscreen wiper high speed or windscreen wiper low-speed running is: when the CAN communication unit receives windscreen wiper speed-sensitive switch or windscreen wiper low speed switch connection information and ignition switch ACC connection information, microcontroller sends the windscreen wiper high speed or windscreen wiper low speed is connected information to the windscreen wiper driving control unit, power drive chip controls windscreen wiper High Speed NMOS pipe or the conducting of windscreen wiper low speed NMOS pipe by the windscreen wiper driving control unit, connect windscreen wiper high speed or windscreen wiper low speed coil, control windscreen wiper high speed or windscreen wiper low-speed running.
The High-Speed Automatic process that resets of windscreen wiper is: when the CAN communication unit receives windscreen wiper speed-sensitive switch disconnection information or ignition switch ACC disconnection information, windscreen wiper reset mode information acquisition unit is gathered windscreen wiper reset terminal state, if the windscreen wiper reset terminal is connected, then microcontroller transmission windscreen wiper disconnects information at a high speed to the windscreen wiper driving control unit, power drive chip controls windscreen wiper High Speed NMOS pipe by the windscreen wiper driving control unit ends, disconnect windscreen wiper high speed coil, windscreen wiper shuts down at a high speed, realizes that windscreen wiper is High-Speed Automatic to reset;
The automatically reset process of windscreen wiper low speed is: when the CAN communication unit receives disconnection of windscreen wiper low speed switch and windscreen wiper pause switch disconnection information, or receive ignition switch ACC when disconnecting information, windscreen wiper reset mode information acquisition unit is gathered windscreen wiper reset terminal state, if the windscreen wiper reset terminal is connected, then microcontroller sends windscreen wiper low speed disconnection information to the windscreen wiper driving control unit, power drive chip controls windscreen wiper low speed NMOS pipe by the windscreen wiper driving control unit ends, disconnect windscreen wiper low speed coil, windscreen wiper low speed shuts down, and realizes that windscreen wiper low speed automatically resets.
Windscreen wiper reset mode information acquisition process is: gather before the windscreen wiper reset mode information, must judge whether and need gather this information; After collecting windscreen wiper reset mode information, if windscreen wiper reset terminal level is high (logical one, the connection of windscreen wiper reset terminal is described, windscreen wiper is in reset position), then microcontroller sends windscreen wiper high speed (or windscreen wiper low speed) disconnection information and gives the windscreen wiper driving control unit, and control windscreen wiper (or windscreen wiper low speed) at a high speed shuts down; If windscreen wiper reset terminal level is low (logical zero, illustrate that the windscreen wiper reset terminal disconnects, windscreen wiper is not in reset position), then necessary circle collection windscreen wiper reset terminal level state, up to it when being high, (or windscreen wiper low speed) disconnection information is to the windscreen wiper driving control unit at a high speed to send windscreen wiper by microcontroller, and control windscreen wiper (or windscreen wiper low speed) at a high speed shuts down.
Windscreen wiper is connected the control flow process at a high speed: by resolving wiper switch information and the ignition switch infomational message that receives from the CAN bus, when the windscreen wiper speed-sensitive switch was connected (logical one) and ignition switch ACC connection (logical one), then expression needed the control windscreen wiper to connect at a high speed; OUT1 by microprocessor controls power drive chip UP1 connects, NMOS pipe Q1 conducting, windscreen wiper high speed coil electricity.
Windscreen wiper disconnects control procedure at a high speed: by resolving wiper switch information and the ignition switch infomational message that receives from the CAN bus, when the windscreen wiper speed-sensitive switch disconnected (logical zero) or ignition switch ACC disconnection (logical zero), then expression needed the control windscreen wiper to disconnect at a high speed; Need this moment to gather windscreen wiper reset mode information, if windscreen wiper reset terminal level is that (logical one illustrates the connection of windscreen wiper reset terminal to height, windscreen wiper is in reset position), OUT1 by microprocessor controls power drive chip UP1 disconnects, and NMOS pipe Q1 ends windscreen wiper high speed coil blackout.
The process that windscreen wiper is intermittently controlled is: when the CAN communication unit receives windscreen wiper pause switch connection information and ignition switch ACC connection information, microcontroller sends windscreen wiper low speed and connects information to windscreen wiper high speed/driven at low speed control module, by the power drive chip controls windscreen wiper low speed NMOS of windscreen wiper high speed/driven at low speed control module pipe conducting m second (m moves time in reciprocal 1 week less than windscreen wiper), connect windscreen wiper low speed coil, control windscreen wiper low-speed running.M is after second for the conducting of windscreen wiper low speed NMOS pipe, gather windscreen wiper reset terminal state by windscreen wiper reset mode information acquisition unit, if the windscreen wiper reset terminal is connected, then microcontroller sends windscreen wiper low speed disconnection information to windscreen wiper high speed/driven at low speed control module, power drive chip controls windscreen wiper low speed NMOS pipe by windscreen wiper high speed/driven at low speed control module disconnects n second (n is the windscreen wiper quiescent interval), disconnect windscreen wiper low speed coil, windscreen wiper low speed shuts down.The Using such method circulation is carried out, and realizes windscreen wiper interval-automatic control.
Windscreen wiper intermittent connectivity control procedure is: windscreen wiper intermittently control exactly with windscreen wiper periodically low speed switch on and off.By resolving wiper switch information and the ignition switch infomational message that receives from the CAN bus, when the windscreen wiper pause switch was connected (logical one) and ignition switch ACC connection (logical one), then expression needed the intermittent connectivity of control windscreen wiper low speed; OUT2 by microprocessor controls power drive chip UP1 connects, NMOS pipe Q2 conducting, and windscreen wiper low speed coil electricity, its ON time is m second (m is less than the windscreen wiper to-and-fro movement time in one week); M is after second in NMOS pipe Q2 conducting, gather windscreen wiper reset terminal level state, if windscreen wiper reset terminal level is high (logical one, the connection of windscreen wiper reset terminal is described, windscreen wiper is in reset position), disconnect by the OUT2 of microprocessor controls power drive chip UP1, NMOS pipe Q2 ends, windscreen wiper low speed coil blackout, be n second (n is the windscreen wiper quiescent interval) its trip time.The flow process circulation is carried out according to this, thereby realizes windscreen wiper intermittently control automatically.
Windscreen wiper intermittently disconnects control procedure: by resolving wiper switch information and the ignition switch infomational message that receives from the CAN bus, when the windscreen wiper pause switch disconnects (logical zero) and the windscreen wiper low speed switch disconnects (logical zero) or when ignition switch ACC disconnected (logical zero), expression needed the disconnection of control windscreen wiper low speed; Need this moment to gather windscreen wiper reset terminal level state, if windscreen wiper reset terminal level is that (logical one illustrates the connection of windscreen wiper reset terminal to height, windscreen wiper is in reset position), OUT2 by microprocessor controls power drive chip UP1 closes, and NMOS pipe Q2 ends windscreen wiper low speed coil blackout.
The content that is not described in detail in this instructions belongs to this area professional and technical personnel's known prior art.
Claims (6)
1. bus type automobile rain scrape controller, it is characterized in that comprising microcontroller, CAN communication unit, windscreen wiper driving control unit, windscreen wiper reset mode information acquisition unit and support circuit that microcontroller links to each other with the support circuit with described three unit by its data bus; Microcontroller inside is integrated with the CAN controller.
2. bus type automobile rain scrape controller as claimed in claim 1 is characterized in that: microcontroller adopts 8 or 8 above single-chip microcomputers.
3. bus type automobile rain scrape controller as claimed in claim 1 is characterized in that the CAN communication unit mainly is made of 1 CAN transceiver and 2 optical couplers, and wherein: the CAN order wire links to each other with the CANL pin with the CANH pin of CAN transceiver through filtering circuit; The reception data input pin of CAN transceiver links to each other with the signal input part of optical coupler, and is linked to each other with the CAN reception data pin of microcontroller by the signal output part of optical coupler; The CAN of microcontroller sends data pin and links to each other with the signal input part of optical coupler, and is linked to each other with the data transmission pin of CAN transceiver by the signal output part of optical coupler.
4. bus type automobile rain scrape controller as claimed in claim 1, the core component that it is characterized in that the windscreen wiper driving control unit mainly is power drive chip UP1 and NMOS pipe, wherein: the output terminal OUT1 of UP1 links to each other with the grid of NMOS pipe Q1 after resistance R A05, RA06 dividing potential drop, the drain electrode of NMOS pipe Q1 connects windscreen wiper High-speed Control end, the source ground of NMOS pipe Q1; The output terminal OUT2 of UP1 links to each other with the grid of NMOS pipe Q2 through resistance R A07, RA08 dividing potential drop, and the drain electrode of NMOS pipe Q2 connects windscreen wiper low speed control end, the source ground of NMOS pipe Q2; Diode DK2, DK3 are connected in parallel on respectively between the drain electrode and source electrode of NMOS pipe Q1, Q2; The IN1 of UP1 and IN2 pin are used to receive the input control signal of microcontroller; The St of UP1 and CurR pin are the feedback of status pin, link to each other with A/D input port AN13 with micro controller I/O mouth PP0 respectively.
5. bus type automobile rain scrape controller as claimed in claim 1, the core parts that it is characterized in that windscreen wiper reset mode information acquisition unit are switching value input detection chip UP2, and the windscreen wiper reset signal detects a mouthful SP0 with the programmable switch amount of switching value input detection chip UP2 and links to each other after resistance R A03, RA04 dividing potential drop; UP2 communicates by letter by the SPI0 communication interface with microcontroller, and relevant pin is pin MOSI0, MISO0, SCK0 and the CS1 of UP2.
6. bus type automobile rain scrape controller as claimed in claim 1 is characterized in that supporting circuit mainly to be made of power circuit, reset circuit, and wherein: power circuit is divided into two power modules, is respectively the power supply of wiper controller and CAN telecommunication circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200889336U CN201126537Y (en) | 2007-12-11 | 2007-12-11 | Bus type vehicle rain brush controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200889336U CN201126537Y (en) | 2007-12-11 | 2007-12-11 | Bus type vehicle rain brush controller |
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| Publication Number | Publication Date |
|---|---|
| CN201126537Y true CN201126537Y (en) | 2008-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200889336U Expired - Fee Related CN201126537Y (en) | 2007-12-11 | 2007-12-11 | Bus type vehicle rain brush controller |
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| CN (1) | CN201126537Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109109819A (en) * | 2018-07-23 | 2019-01-01 | 浙江吉利汽车研究院有限公司 | Rain shaving electrical machine control method, device and controller |
-
2007
- 2007-12-11 CN CNU2007200889336U patent/CN201126537Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109109819A (en) * | 2018-07-23 | 2019-01-01 | 浙江吉利汽车研究院有限公司 | Rain shaving electrical machine control method, device and controller |
| CN109109819B (en) * | 2018-07-23 | 2020-10-27 | 浙江吉利汽车研究院有限公司 | Wiper motor control method, device and controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081001 Termination date: 20121211 |