CN201885349U - Intelligent control device of an automobile air conditioner - Google Patents
Intelligent control device of an automobile air conditioner Download PDFInfo
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- CN201885349U CN201885349U CN2010205393057U CN201020539305U CN201885349U CN 201885349 U CN201885349 U CN 201885349U CN 2010205393057 U CN2010205393057 U CN 2010205393057U CN 201020539305 U CN201020539305 U CN 201020539305U CN 201885349 U CN201885349 U CN 201885349U
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Abstract
The utility model mainly discloses an intelligent control device of an automobile air conditioner. The intelligent control device comprises two components, namely, an air-conditioner control module and an air-conditioner control panel, which are used for coordinating with a CAN (controller area network) bus transmit-receive drive circuit, and perform data exchange in a manner of the CAN bus. Air-conditioner control information is input in the air-conditioner control panel and send to a first singlechip, so that the air-conditioner control information can be sent to the CAN bus; control command is converted into corresponding execution command which is sent to a relay control output circuit after the air-conditioner control module receives the control command, the relay control output circuit performs the operation of an air-conditioner relay, and the state variation of the air-conditioner is realized; and air-conditioner variation information is fed back to the CAN bus and the first singlechip simultaneously through the second singlechip, and can be displayed through a display circuit. The intelligent control device provided by the utility model adopts a controller in accordance with the SAE J1939 protocol to control the operation of the automobile air conditioner and forms a close-loop control, and can perform resource sharing and information communication with CAN modules of other systems in an automobile.
Description
Technical field
The utility model relates to air conditioning for automobiles control, and is particularly relevant with a kind of air conditioning for automobiles intelligence controlling device.
Background technology
Existing air conditioning for automobiles electrical control industry roughly has two kinds of present situations:
One, air conditioning for automobiles electrical control form substantially all is to adopt tens control wire harness at present, control by Air-Conditioning Control Panel manual operation and temperature air-conditioner control box (relay box) is controlled, reach control air-conditioning evaporation fan, condensation fan, compressor clutch.This control line beam quality trouble point heavy, that may occur is many, wire harness cost height, inconvenience when installing an air-conditioner, control panel and when controlling wire harness and breaking down air-conditioning can not use.
Two, at present a small amount of air conditioning for automobiles adopt bus form control mode also have a following problems:
1, the bus of Cai Yonging belongs to open loop control, can not truly reflect the running status of air-conditioning system, even may cause system out of control;
2, the CAN communications protocol of Cai Yonging is not the popular SAE J1939 agreement (car gage serial protocol) of passenger vehicle, can't realize resource-sharing and information mutual communication with the CAN module of other system in the car, for example: unified fault diagnosis.
Based on the SAE J1939 agreement that adopts in the automobile industry, the inventor designs a kind of air conditioning for automobiles intelligence controlling device, solves the problem of above-mentioned existence, and this case produces thus.
The utility model content
The purpose of this utility model is to provide a kind of air conditioning for automobiles intelligence controlling device, adopt a controller that meets SAE J1939 agreement to control the running of air conditioning for automobiles, form closed-loop control, can carry out resource-sharing and information mutual communication with the CAN module of other system in the car.
To achieve these goals, solution of the present utility model is:
A kind of air conditioning for automobiles intelligence controlling device comprises Air-Conditioning Control Panel and air-conditioning control module, and wherein Air-Conditioning Control Panel comprises:
Keyboard circuit is gathered the air-conditioning control information of input in the mode of button;
First single-chip microcomputer, its input connect panel keyboard circuit are set, and output connects display circuit, and output connects CAN bus transmitting-receiving drive circuit simultaneously, carries out exchanges data with automobile CAN-bus;
Display circuit comprises that IO control drives chip, shift register chip, charactron, striation, light emitting diode; IO control drives chip, the shift register chip connects second singlechip, connects in dynamic scan method mode simultaneously to drive charactron, striation and light emitting diode;
The air-conditioning control module comprises:
Second singlechip, its input are connected with the 2nd CAN bus transmitting-receiving drive circuit, carry out exchanges data with the CAN bus, and its output is connected with relay control output circuit;
Relay control output circuit comprises the relay drive circuit that is connected with second singlechip, with the relay output circuit that is connected with AUTOMOTIVE RELAY, and control AUTOMOTIVE RELAY work shape body.
Described Air-Conditioning Control Panel comprises that also vehicle controls new wind signal input circuit, gathers the input of new wind signal in the automobile, and new wind signal is sent to the air-conditioning control module by the CAN bus.
Described Air-Conditioning Control Panel comprises that also the idling that is connected with first single-chip microcomputer promotes control circuit.
Described Air-Conditioning Control Panel also comprises the keyboard back light circuit, is connected with first single-chip microcomputer, for keyboard circuit provides demonstration backlight.
Described air-conditioning control module also comprises:
Temperature collection circuit, the temperature at collection automobile air-conditioning return air inlet place, air outlet place, an A/C evaporator fin left side, the right air outlet of A/C evaporator fin place converts it into temperature signal and flows to second singlechip;
Voltage collection circuit, the voltage of collection automotive power supply voltage, air-conditioning generator converts it into voltage signal and flows to second singlechip;
The switching value input circuit, gather the low tension switch signal on the low pressure pipeline of high-voltage switch gear signal on the pressure piping of emergency button signal, A/C evaporator inside of air-conditioning control module, A/C evaporator inside, and above-mentioned three kinds of switching value signals are delivered to second singlechip.
Indicator light circuit picks out light emitting diode from second singlechip, with display power supply state, CAN bus communication state, high-low pressure state, evaporating state, new wind state and cooling and warming state.
After adopting such scheme, the utlity model has following beneficial effect:
At first, the CAN bus form that the utility model is based on this province of automobile carries out transfer of data, and reliability is very high, very suitable automotive environment.Simultaneously, meet the CAN2.0B agreement, compatible existing SAE J1939 agreement really forms closed-loop control fully, can carry out resource-sharing and information mutual communication with the CAN module of other system in the car.Adopt the communication of CAN bus form, can reduce in the existing air conditioner controlling technology by 80% wire harness, reduce the wire harness cost greatly, reduce potential safety hazard.
Secondly, all the other are multiple functional in the utility model, can realize the idle speed control of automobile engine in conjunction with automotive air-conditioning system, have defrosting temperature two-way look facility, also have vehicle power supply and air-conditioning generator voltage look facility in addition, in time understand the situation of vehicle.
In addition, also have many human oriented designs in the utility model,, make and also can see keyboard clearly,, can know to show the air-conditioning work state, make things convenient for the driver in time to grasp again such as multiple indicator light circuit in the place of insufficient light such as the keyboard back light circuit.
Description of drawings
Fig. 1 is the utility model preferred embodiment module diagram;
Fig. 2 is the circuit diagram of power circuit on the Air-Conditioning Control Panel in the utility model preferred embodiment;
Fig. 3 is the circuit diagram of first single-chip microcomputer on the Air-Conditioning Control Panel in the utility model preferred embodiment;
Fig. 4 is the circuit diagram of a CAN bus transmission circuit on the Air-Conditioning Control Panel in the utility model preferred embodiment;
Fig. 5 is the circuit diagram of Air-Conditioning Control Panel upper keyboard circuit in the utility model preferred embodiment;
Fig. 6 is the circuit diagram of Air-Conditioning Control Panel upper keyboard backlight circuit in the utility model preferred embodiment;
Fig. 7 is the circuit diagram of display circuit on the Air-Conditioning Control Panel in the utility model preferred embodiment;
Fig. 8 be in the utility model preferred embodiment on the Air-Conditioning Control Panel vehicle control the circuit diagram of new wind signal input circuit;
Fig. 9 be in the utility model preferred embodiment on the Air-Conditioning Control Panel idling promote the circuit diagram of control circuit;
Figure 10 is the circuit diagram of power circuit on the utility model preferred embodiment hollow regulation and control molding piece;
Figure 11 is the circuit diagram of voltage collection circuit on the utility model preferred embodiment hollow regulation and control molding piece;
Figure 12 is the circuit diagram of temperature collection circuit on the utility model preferred embodiment hollow regulation and control molding piece;
Figure 13 is the circuit diagram of the second bus CAN transmission circuit on the utility model preferred embodiment hollow regulation and control molding piece;
Figure 14 is the circuit diagram of second singlechip on the utility model preferred embodiment hollow regulation and control molding piece;
Figure 15 is the circuit diagram of relay drive unit on the utility model preferred embodiment hollow regulation and control molding piece;
Figure 16 is the circuit diagram of indicator light circuit on the utility model preferred embodiment hollow regulation and control molding piece;
Figure 17 is the circuit diagram of switching value input circuit on the utility model preferred embodiment hollow regulation and control molding piece;
Figure 18 is the circuit diagram of relay unit on the utility model preferred embodiment hollow regulation and control molding piece.
The specific embodiment
In conjunction with the accompanying drawings, the utility model is done be further explained in detail.
As shown in Figure 1, comprise two big critical pieces in the utility model, Air-Conditioning Control Panel 1 and air-conditioning control module 2 adopt the automobile CAN communication bus to connect between the two.
Wherein comprise first single-chip microcomputer 11 in the Air-Conditioning Control Panel 1, and the keyboard circuit 12 that is connected with it, display circuit 13, a CAN bus transmission circuit 14, vehicle are controlled new wind signal input circuit 15, idling promotes control circuit 16.
Air-conditioning control module 2 comprises second singlechip 21, and the second bus CAN transmission circuit 22, temperature collection circuit 23, voltage collection circuit 24, switching value input circuit 25, indicator light circuit 26, the relay output circuit 27 that are connected with it.
As Fig. 2～shown in Figure 9, first single-chip microcomputer 11 is selected the PIC18F2580 of U.S. Microchip company for use, has 28 pins, operating voltage is+5V, be furnished with a power circuit 17, with on the automobile+DC voltage of 24V converts to+operating voltage of 5V, is 11 power supplies of first single-chip microcomputer.
The one CAN bus transmission circuit 14 is the circuit that adopt the CAN transceiver to form, and the Pin1 of CAN transceiver, 4 is connected on the Pin23,24 of first single-chip microcomputer 11, and the Pin6 of CAN transceiver, 7 inserts automobile CAN-bus.The one CAN bus transmission circuit 14 is exactly to make the single-chip microcomputer 11 of winning can carry out exchanges data with the automobile CAN-bus form with second singlechip 21.
Vehicle is controlled new wind signal input circuit 15 positions from secondary instrument desk before automobile and is linked into the 28th pin common i/o port first single-chip microcomputer 11, detects input signal by the optocoupler detection mode.When air-conditioning is in closed condition, if vehicle dormer window exhaust blower switch opens, then new wind control signal input.When new wind signal is imported, photoelectrical coupler can be opened circuit turn-on, produce signal and be delivered in first single-chip microcomputer 11, after first single-chip microcomputer 11 receives this signal then, then this signal is sent to the CAN bus, air-conditioning control module 2 receives the aeration device of opening after this orders on the automobile.
Idling promotes the 27th pin common i/o port that control circuit 16 is connected first single-chip microcomputer 11, connect the control end on the automobile engine simultaneously, second singlechip 21 begins to send raising idling request signal to the CAN bus when the air conditioner condensation blower fan has output, after first single-chip microcomputer 11 receives request signal, with regard to the relay in the idling lifting control circuit 16, the control signal that produces the idling lifting is given automobile engine, make engine promote idling, engine speed can be promoted to (according to different auto vendors data difference) about more than 700 rev/min.Because the air conditioner refrigerating amount is relevant with the vehicle motor rotating speed, the air conditioner refrigerating amount is had a bit improve, the air-conditioning generator speed is improved, satisfy the power consumption of idle call electrical equipment.
In conjunction with Figure 10～Figure 18, second singlechip 21 is that the chip identical with first single-chip microcomputer 11 constitutes, and equally also is furnished with power circuit 28, for second singlechip 21 provides operating voltage.Simultaneously, in order to make the CAN bus communication of air-conditioning control module 2, be connected with the 2nd CAN bus transmission circuit 22 in first single-chip microcomputer, 11 same modes.
When detecting vehicle interior temperature 〉=design temperature, air-conditioning enters refrigerating state automatically; Through refrigeration after a while, when detecting vehicle interior temperature≤design temperature, air-conditioning enters automatically and stops refrigerating state.
When vehicle power supply voltage 〉=32V or≤(continue 5S) during 16V, Air-Conditioning Control Panel can stop all outputs automatically; Air-Conditioning Control Panel can stop refrigeration output (condensation fan, compressor clutch output) automatically (to continue 5S) when vehicle power supply voltage≤21V.The purpose of doing like this is in order to prevent following bad phenomenon: when supply voltage 〉=32V, idle call electrical equipment (condensation fan, evaporation fan, compressor clutch etc.) current ratio is bigger, causes the electrical appliance life-span to reduce easily.When supply voltage≤21V, the suction-combining force of compressor clutch causes clutch friction easily inadequately and produces high temperature, and clutch coil is burnt.When supply voltage≤16V, the suction-combining force of relay coil causes the relay contact sparking inadequately easily, causes relay damaged.
Switching value input circuit 25 is that three road optocoupler testing circuits constitute, mainly comprise emergency button input 251, high-voltage switch gear input 252, low tension switch input 253, what gather respectively is low tension switch amount signal on the low pressure pipeline of high-voltage switch gear amount signal, A/C evaporator inside on the pressure piping of switching value signal, A/C evaporator inside of emergence button.When above-mentioned three class signals, the closed signal that produces of photoelectrical coupler is transported in the second singlechip 21.When receiving the switching value signal of emergence button, second singlechip 21 control air-conditioning automatically enters in the automatic mode as emergency measure.After receiving high pressure and low tension switch amount signal, carry out software redundancy by second singlechip 21 and handle,, promptly close air-conditioning compressor if handle the back signal effectively then enter high-low pressure fault alarm handling process.If high voltage fault, condensation fan is closed the back delay at compressor and was closed in 10 seconds; If low voltage failure, condensation fan is closed the back delay at compressor and was closed in 2 seconds.So, reach the refrigeration purpose, and in air-conditioning system, designed high-voltage switch gear and low tension switch respectively in order to guarantee air-conditioning system pressure security operate as normal.If air-conditioning system pressure is too high, can cause refrigeration not good, main is to cause the air-conditioning system unsafe factor.If air-conditioning system pressure is too low, can cause compressor damage.
Control operation principle to automobile of the present utility model is as follows:
At first the control signal that is provided with is wanted in input on keyboard circuit 12, flow to then in first single-chip microcomputer 11, produce command adapted thereto and give the CAN bus, by the CAN bus transfer, after second singlechip 21 receives this instruction, change into concrete operational order and give relay output circuit 27, change by relay output circuit 27 control air conditioning for automobiles then, second singlechip 21 sends one and finishes signal to first single-chip microcomputer 11 simultaneously, after first single-chip microcomputer 11 is received this feedback signal, on display circuit 13, shown, formed a closed-loop control system.
In order to prevent button error under automotive environment, after 12 operations stop 5 seconds to keyboard circuit, just first single-chip microcomputer 11 can send to command adapted thereto the CAN bus.The misoperation of air-conditioning in setting up procedure effectively avoided in this measure, significantly reduces the bus burden.
Simultaneously, the new wind signal input of monitoring automobile in real time when air-conditioning is in off status, produces new wind signal on first single-chip microcomputer 11, this signal is by sending to the CAN bus on first single-chip microcomputer 11, and air-conditioning control module 2 receives the aeration device of opening after this orders on the automobile.
Can produce an idling at second singlechip 21 when condensation fan output is arranged and promote request, then this request signal be sent in first single-chip microcomputer 11, first single-chip microcomputer 11 produces signal and promotes control circuit 16 to idling, controls the raising of engine idle thus.
The voltage (being the voltage of air-conditioning generator) that second singlechip 21 collection automobile+24V power supply voltages, Mot Volt select, Temp-IN (vehicle air conditioning return air inlet place) temperature, Temp-DF1 (defrosting temperature 1: temperature and Temp-DF2 (defrosting temperature 2: the temperature right air outlet of A/C evaporator fin place) air outlet place, an A/C evaporator fin left side), send the signal of gathering to second singlechip 21, like this can comprehensive understanding vehicle condition, at any time grasp trend, situation in the car is carried out Based Intelligent Control.
In addition, also be provided with emergency measure in the utility model, set up emergence button in air-conditioning control module 2, when in the operation of air conditioner process, the CAN bus communication produces fault, then communication light flicker, and second singlechip 21 automatic control air-conditionings enter in the automatic mode then.When CAN bus communication fault occurring before air-conditioning start, the long emergence button of press in the air-conditioning control module 21 second starts automotive air-conditioning system, and enters under the automatic mode and move.Emergency measure is flexible, adapts to all kinds of accidents.
Claims (8)
1. air conditioning for automobiles intelligence controlling device, it is characterized in that: comprise Air-Conditioning Control Panel and air-conditioning control module, wherein Air-Conditioning Control Panel comprises:
Keyboard circuit is gathered the air-conditioning control information of input in the mode of button;
First single-chip microcomputer, its input connect panel keyboard circuit are set, and output connects display circuit, and output connects CAN bus transmitting-receiving drive circuit simultaneously, carries out exchanges data with automobile CAN-bus;
Display circuit comprises that IO control drives chip, shift register chip, charactron, striation, light emitting diode; IO control drives chip, the shift register chip connects second singlechip, connects in dynamic scan method mode simultaneously to drive charactron, striation and light emitting diode;
The air-conditioning control module comprises:
Second singlechip, its input are connected with the 2nd CAN bus transmitting-receiving drive circuit, carry out exchanges data with the CAN bus, and its output is connected with relay control output circuit;
Relay control output circuit comprises the relay drive circuit that is connected with second singlechip, with the relay output circuit that is connected with AUTOMOTIVE RELAY, and control AUTOMOTIVE RELAY work shape body.
2. a kind of air conditioning for automobiles intelligence controlling device as claimed in claim 1, it is characterized in that: described Air-Conditioning Control Panel comprises that also vehicle controls new wind signal input circuit, gather the input of new wind signal in the automobile, new wind signal is sent to the air-conditioning control module by the CAN bus.
3. a kind of air conditioning for automobiles intelligence controlling device as claimed in claim 1 is characterized in that: described Air-Conditioning Control Panel comprises that also the idling that is connected with first single-chip microcomputer promotes control circuit.
4. a kind of air conditioning for automobiles intelligence controlling device as claimed in claim 1, it is characterized in that: described Air-Conditioning Control Panel also comprises the keyboard back light circuit, is connected with first single-chip microcomputer, for keyboard circuit provides demonstration backlight.
5. a kind of air conditioning for automobiles intelligence controlling device as claimed in claim 1, it is characterized in that: described air-conditioning control module also comprises temperature collection circuit, gather the temperature at automobile air-conditioning return air inlet place, air outlet place, an A/C evaporator fin left side, the right air outlet of A/C evaporator fin place, convert it into temperature signal and flow to second singlechip.
6. a kind of air conditioning for automobiles intelligence controlling device as claimed in claim 1, it is characterized in that: described air-conditioning control module also comprises voltage collection circuit, gather the voltage of automotive power supply voltage, air-conditioning generator, convert it into voltage signal and flow to second singlechip.
7. a kind of air conditioning for automobiles intelligence controlling device as claimed in claim 1, it is characterized in that: described air-conditioning control module also comprises the switching value input circuit, gather the low tension switch signal on the low pressure pipeline of high-voltage switch gear signal on the pressure piping of emergency button signal, A/C evaporator inside of air-conditioning control module, A/C evaporator inside, and above-mentioned three kinds of switching value signals are delivered to second singlechip.
8. a kind of air conditioning for automobiles intelligence controlling device as claimed in claim 1, it is characterized in that: described air-conditioning control module also comprises indicator light circuit, pick out light emitting diode from second singlechip, with display power supply state, CAN bus communication state, high-low pressure state, evaporating state, new wind state and cooling and warming state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205393057U CN201885349U (en) | 2010-09-13 | 2010-09-13 | Intelligent control device of an automobile air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205393057U CN201885349U (en) | 2010-09-13 | 2010-09-13 | Intelligent control device of an automobile air conditioner |
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| Publication Number | Publication Date |
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| CN201885349U true CN201885349U (en) | 2011-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010205393057U Expired - Fee Related CN201885349U (en) | 2010-09-13 | 2010-09-13 | Intelligent control device of an automobile air conditioner |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949572A (en) * | 2010-09-13 | 2011-01-19 | 厦门金龙汽车空调有限公司 | Method and device for intelligently controlling air-conditioner of automobile |
| CN107039963A (en) * | 2016-02-03 | 2017-08-11 | 东风神宇车辆有限公司 | A kind of protection circuit on automobile electrical equipment wire harness circuit |
| CN109798597A (en) * | 2019-01-31 | 2019-05-24 | 广东美的制冷设备有限公司 | Air conditioner indoor unit and air conditioner with it |
-
2010
- 2010-09-13 CN CN2010205393057U patent/CN201885349U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949572A (en) * | 2010-09-13 | 2011-01-19 | 厦门金龙汽车空调有限公司 | Method and device for intelligently controlling air-conditioner of automobile |
| CN101949572B (en) * | 2010-09-13 | 2013-06-12 | 厦门金龙汽车空调有限公司 | Method and device for intelligently controlling air-conditioner of automobile |
| CN107039963A (en) * | 2016-02-03 | 2017-08-11 | 东风神宇车辆有限公司 | A kind of protection circuit on automobile electrical equipment wire harness circuit |
| CN109798597A (en) * | 2019-01-31 | 2019-05-24 | 广东美的制冷设备有限公司 | Air conditioner indoor unit and air conditioner with it |
| CN109798597B (en) * | 2019-01-31 | 2021-05-25 | 广东美的制冷设备有限公司 | Air conditioner indoor unit and air conditioner with same |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20140913 |
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| EXPY | Termination of patent right or utility model |