CN202827043U - Bus air condition controller - Google Patents
Bus air condition controller Download PDFInfo
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- CN202827043U CN202827043U CN201220475115.2U CN201220475115U CN202827043U CN 202827043 U CN202827043 U CN 202827043U CN 201220475115 U CN201220475115 U CN 201220475115U CN 202827043 U CN202827043 U CN 202827043U
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Abstract
The utility model provides a bus air condition controller and belongs to the air condition control field. The bus air condition controller comprises a micro controller unit (MCU), a power supply processing module, a button acquisition module, a sensor acquisition module, a display module, a load driving module and a video graphics array (VGA) video output module, wherein the power supply processing module, the button acquisition module, the sensor acquisition module, the display module, the load driving module and the VGA video output module are respectively connected with the MCU. The power supply processing module comprises a low quiescent current 3.3-volt voltage stabilizer and a voltage stabilizing circuit, wherein the low quiescent current 3.3V voltage stabilizer is connected with a vehicle power supply and supplies power for a single chip microcomputer, the voltage stabilizing circuit is connected with the vehicle power supply, is composed of a 5V direct current (DC)-DC voltage stabilizer, a 3.3V linear voltage stabilizer and a 1.5V DC-DC voltage stabilizer, and supplies power for devices, and the 3.3V linear voltage stabilizer and the 1.5V DC-DC voltage stabilizer are respectively connected with the 5V DC-DC voltage stabilizer. Button switches of the controller are backlight buttons. The buttons are all provided with prompt tones, and the display module adopts a thin film transistor (TFT) display screen. The bus air condition controller further comprises a communication module and a VGA output module, and the MCU is connected with an air quality monitor through a communication module port. The bus air condition controller has the advantages of having low quiescent current, being good in display contrast, bright in color, and capable of sending out specific failure prompts, externally connecting with an air quality monitoring module, and displaying relative parameters of the air quality in real time.
Description
Technical field
The utility model relates to a kind of bus air-conditioner controller, belongs to electronic type technology of air-conditioning controller field; Be applicable to the bus a/c system.
Background technology
On the bus a/c system is housed all at present, can regulates vehicle interior temperature to a comfortable state.Mode mostly is mechanical, hand-driven operating mode and motorized adjustment mode.
Controller panel is as the part of bus interior trim, and people have also proposed higher requirement to its moulding, attractive in appearance, comfort.The status informations such as temperature of air-conditioner controller normally utilized simple LED, word section-type LCD to offer chaufeur in the past, and were attractive in appearance not.Therefore, be necessary to develop a again creative air-conditioner controller attractive in appearance, to satisfy different users to the needs of the novelty of bus air-conditioner controller.
Along with the fast development of modern automobile air conditioning applications technology and the raising of electromechanical automatic degree, the automotive air-conditioning system function more be tending towards perfect in, it is more and more convenient that the mode of automotive air-conditioning system also becomes, more intelligent.But after traditional controller breaks down, can only the Alternation Display diagnostic code, the maintainer can not directly understand the implication of diagnostic code representative, also needs to browse manual of maintenance in the time of the investigation fault, and is convenient and swift not.
Because the day by day raising that people require quality of life requires also more and more higher to the bus ride quality.Bus is because the space is relatively airtight, and the passenger is intensive, atmosphere draught-free, the easy variation of air quality.Cause oxygen content to lower, carbon dioxide and CO (carbon monoxide converter) concentration rise, and the passenger can feel to feel oppressed, even dizzy, vomiting.Therefore monitoring in-car air quality is very important.
Summary of the invention
For overcoming the above-mentioned deficiency of the existing controller of bus, the utility model provides a kind of bus air-conditioner controller.
The utility model is realized with following technical scheme: a kind of bus air-conditioner controller comprises microcontroller, the power supply processing module that is connected with MCU respectively, button acquisition module, sensor acquisition module, display module and load driver module; Described button acquisition module also is connected with each button switch of controller; It is characterized in that, described power supply processing module comprises one tunnel low quiescent current 3.3V voltage stabilizer to micro controller system power supply that is connected with automobile power source, be connected that the road is connected with automobile power source by 5V DC-DC voltage stabilizer be connected the 3.3V linear voltage regulator that is connected with 5V DC-DC voltage stabilizer, the mu balanced circuit to power devices that the 1.5V linear voltage regulator forms; Each button switch of described controller is backlight key; Described each button all arranges prompt tone; Described display module adopts the TFT read-out, and adopts literal to show concrete fault; Also comprise VGA video output module, be used for the vision signal of TFT read-out is converted to the VGA interface of large telltale in the car, microcontroller is connected with air mass monitor by the communication module interface.
The utility model has the advantages that, adopt low quiescent current 3.3V linear voltage regulator to provide power supply for micro controller system, the Enable Pin of Single-chip Controlling main power source 5V DC-DC voltage stabilizer.When controller is in " shut " mode", can close by micro controller system the Enable Pin of main power source, only stay the work of low quiescent current 3.3V linear voltage regulator, thereby reduce overall power.TFT-LCD liquid crystal dot matrix read-out display comparison degree is good, and stereovision is strong, and is bright in luster; After breaking down, can provide clear and definite fault prompting; Can external control quality module, show in real time the air quality correlation parameter, and VGA vision signal that can the delivery air quality shows to LCD TV.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is schematic block circuit diagram of the present utility model.
Fig. 2 is power module block diagram of the present utility model.
The specific embodiment
As depicted in figs. 1 and 2, a kind of bus air-conditioner controller comprises microcontroller, the power supply processing module that is connected with MCU respectively, button acquisition module, sensor acquisition module, display module and load driver module; Microcontroller adopts micro controller system.Described button acquisition module also is connected with each button switch of controller; Described power supply processing module comprises one tunnel low quiescent current 3.3V voltage stabilizer to micro controller system power supply that is connected with automobile power source, be connected that the road is connected with automobile power source by 5V DC-DC voltage stabilizer be connected the 3.3V linear voltage regulator that is connected with 5V DC-DC voltage stabilizer, the mu balanced circuit to power devices that the 1.5V linear voltage regulator forms.The Vehicle Controller power supply is taken from the bus storage battery, so quiescent current is had strict demand.Linear voltage regulator forwards 5V or 3.3V to from 24V, and in the larger situation, dissipated power all can not meet the demands electric current again.If adopt the DC-DC voltage stabilizer, the quiescent current of itself is generally 5-10mA, and noise is very large, needs further isolation.Use ASM1117-3.3LDO that 5V is transferred to 3.3V, ASM1117-1.5LDO transfers 5V to 1.5V, and the quiescent current of ASM1117 itself is also more than 5mA.So the quiescent dissipation of this scheme voltage stabilizer with regard to 15mA, can not satisfy the requirement of low-power consumption.Adopt low quiescent current 3.3V linear voltage regulator to provide power supply for micro controller system, the Enable Pin of Single-chip Controlling main power source 5V DC-DC voltage stabilizer.When controller is in " shut " mode", can close by micro controller system the Enable Pin of main power source, only stay the work of low quiescent current 3.3V linear voltage regulator, thereby reduce overall power.
Each button switch of described controller is backlight key; Behind the controller plugged, key-press backlight driving circuit driving LED lamp is luminous, thoroughly comes up below key position, in the place of insufficient light, particularly evening, greatly facilitates user's operation.
Each button all arranges prompt tone; Increase a buzzer phone and send prompt tone, after micro controller system detects button and presses, drive buzzer phone and send very brief one " ticking " sound, oneself supress button thereby allow client clearly know.
Described display module adopts the TFT read-out, and adopts literal to show concrete fault; Also comprise communication module, be used for the vision signal of TFT read-out is converted to the VGA output module of large display screen in the car, microcontroller is connected with air mass monitor by the communication module interface.Read-out adopts 3.0 cun TFT-LCD liquid crystal dot matrix read-outs, replaces original simple LED, word section-type LCD.The characteristics of TFT-LCD are, brightness is high, good contrast, and speed of response is fast, and stereovision is strong, and is bright in luster, and angular field of view is large.
Communication module adopts the RS485 communication interface, is connected to air mass monitor by the RS485 communication interface, the data that transmit by the admission of air quality module, can be on read-out the various indexs of display environment quality.Index with fresh air for example, degree of quality, temperature, humidity can also real-time empty makings discharge curve.According to these indexes, just can grasp the air quality in vehicle situation, the driver can take corresponding measure with fresh air according to air quality index, for example opens new wind function, allows extraneous fresh air into the car, or opens air freshener.
The VGA output module comprises the video control module, and D/A converter module is used for outputting video signal.As everyone knows, all be equipped with telltale on the general bus, watch film etc. on the way for the passenger.This controller can outputting standard the VGA signal, air quality indexes is presented on the vehicle-mounted telltale in real time, allows the passenger understand at any time the in-car air quality situation, the passenger can see when the air variation, system opens air refreshing function automatically, more can show the class of bus.
After breaking down, with the clear and definite indication fault reason of the mode place of icon and literal.The status informations such as temperature of air-conditioner controller normally utilized simple LED, word section-type LCD to offer chaufeur in the past.After controller breaks down, can only the Alternation Display diagnostic code, the maintainer can not directly understand the implication of diagnostic code representative, also needs to browse manual of maintenance in the time of the investigation fault, and is convenient and swift not.Our controller adopts clear and definite literal to indicate concrete fault, as: power line voltage is excessively low, and the excessively low identification pattern of power line voltage appears in read-out, please check whether power supply is under-voltage.
Claims (4)
1. a bus air-conditioner controller comprises microcontroller, the power supply processing module that is connected with MCU respectively, button acquisition module, sensor acquisition module, display module and load driver module; Described button acquisition module also is connected with each button switch of controller; It is characterized in that, described power supply processing module comprises one tunnel low quiescent current 3.3V voltage stabilizer to micro controller system power supply that is connected with automobile power source, be connected that the road is connected with automobile power source by 5V DC-DC voltage stabilizer be connected the 3.3V linear voltage regulator that is connected with 5V DC-DC voltage stabilizer, the mu balanced circuit to power devices that the 1.5V linear voltage regulator forms; Each button switch of described controller is backlight key; Described each button all arranges prompt tone; Described display module adopts the TFT read-out, and adopts literal to show concrete fault; Also comprise VGA video output module, be used for the vision signal of TFT read-out is converted to the VGA interface of large telltale in the car, microcontroller is connected with air mass monitor by the communication module interface.
2. a kind of bus air-conditioner controller according to claim 1 is characterized in that, described read-out adopts 3.0 cun TFT-LCD liquid crystal dot matrix read-outs.
3. a kind of bus air-conditioner controller according to claim 1 is characterized in that, described communication module adopts the RS485 communication interface.
4. a kind of bus air-conditioner controller according to claim 1 is characterized in that, described VGA output module comprises video control module, D/A converter module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220475115.2U CN202827043U (en) | 2012-09-17 | 2012-09-17 | Bus air condition controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220475115.2U CN202827043U (en) | 2012-09-17 | 2012-09-17 | Bus air condition controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202827043U true CN202827043U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220475115.2U Expired - Lifetime CN202827043U (en) | 2012-09-17 | 2012-09-17 | Bus air condition controller |
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| Country | Link |
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| CN (1) | CN202827043U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332086A (en) * | 2013-07-09 | 2013-10-02 | 无锡市普欧电子有限公司 | Air conditioner control system of large automobile |
| CN103332090A (en) * | 2013-07-09 | 2013-10-02 | 无锡市普欧电子有限公司 | Bus air conditioner control system |
| CN103344029A (en) * | 2013-07-09 | 2013-10-09 | 无锡市普欧电子有限公司 | Large-scale automotive air conditioner controlling device |
| CN103411289A (en) * | 2013-08-15 | 2013-11-27 | 江苏省精创电气股份有限公司 | Variable power controlled truck air condition controller |
| CN104776885A (en) * | 2015-04-28 | 2015-07-15 | 宁波萨瑞通讯有限公司 | Monitoring system for environment in vehicle |
| CN112776742A (en) * | 2020-12-22 | 2021-05-11 | 重庆德科电子仪表有限公司 | Automobile central control display screen system |
-
2012
- 2012-09-17 CN CN201220475115.2U patent/CN202827043U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332086A (en) * | 2013-07-09 | 2013-10-02 | 无锡市普欧电子有限公司 | Air conditioner control system of large automobile |
| CN103332090A (en) * | 2013-07-09 | 2013-10-02 | 无锡市普欧电子有限公司 | Bus air conditioner control system |
| CN103344029A (en) * | 2013-07-09 | 2013-10-09 | 无锡市普欧电子有限公司 | Large-scale automotive air conditioner controlling device |
| CN103411289A (en) * | 2013-08-15 | 2013-11-27 | 江苏省精创电气股份有限公司 | Variable power controlled truck air condition controller |
| CN104776885A (en) * | 2015-04-28 | 2015-07-15 | 宁波萨瑞通讯有限公司 | Monitoring system for environment in vehicle |
| CN112776742A (en) * | 2020-12-22 | 2021-05-11 | 重庆德科电子仪表有限公司 | Automobile central control display screen system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |
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| CX01 | Expiry of patent term |