CN210502181U - Automobile air conditioner intelligent control system capable of monitoring air quality of cab bidirectionally - Google Patents
Automobile air conditioner intelligent control system capable of monitoring air quality of cab bidirectionally Download PDFInfo
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- CN210502181U CN210502181U CN201921735295.1U CN201921735295U CN210502181U CN 210502181 U CN210502181 U CN 210502181U CN 201921735295 U CN201921735295 U CN 201921735295U CN 210502181 U CN210502181 U CN 210502181U
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Abstract
Two-way monitoring driver's cabin air quality's vehicle air conditioner intelligence control system belongs to intelligent control system technical field, including information collection device, data processing device and early warning and urgent processing apparatus, the information collection device is connected with the data processing device input, and the data processing device output is connected with early warning and urgent processing apparatus. The utility model discloses can the perception car outside and the air circumstance that inside is located and judge the interior air quality of car, can be according to the information that accepts to driver's early warning and some bad air situation of automatic handling, consequently can increase driver and crew's comfort level and improve the driver and be absorbed in the degree at to a great extent.
Description
Technical Field
The utility model belongs to the technical field of intelligence control system, especially relate to a vehicle air conditioner intelligence control system through two-way monitoring driver's cabin air quality.
Background
From the current situation, the air quality in the automobile is poor due to the fact that an automobile air conditioning function system is not complete enough, and the content of harmful gas and volatile organic compounds is increased.
The existing automobile air conditioners are mainly divided into three types: manual air conditioning, automatic air conditioning, and automatic multi-zone air conditioning. The manual air conditioner can manually adjust and control the air in the automobile according to the self-perception condition of the automobile driver on the air quality in the automobile. Because human self-perception often has certain delay, the driver often also has certain influence of factors such as delay nature to the control of vehicle air conditioner internal and external circulation, and manual air quality regulation feasibility is lower. The automatic air conditioner and the automatic multi-partition air conditioner automatically adjust the air speed and the air volume by the operation of passengers, so that a carriage can quickly arrive and keep in a good self-perception state. But the design is lack of humanization and man-machine interaction, and the intelligent degree is lower.
The existing intelligent control system for the automobile air conditioner is relatively short in improvement on air quality. Scholars at home and abroad have studied the multi-gas detection system and obtained some achievements. For example, a sensor array formed by a plurality of gas sensors can detect a specific component in a gas and convert it into an electrical signal. Then ADC0809 is adopted to convert the analog signal output by the sensor into a digital signal, AT89C51 is used for data processing and calculation, and the type and concentration information of the gas is displayed, so that qualitative identification and detection of various gases are realized. This technique, however, does not form a design that can be used for practical reliability. Secondly, for the air conditioning treatment system based on air quality improvement at present, on the treatment of internal and external circulation, intelligent regulation and control of the internal and external circulation of the automobile cannot be realized, and the reduction of the air quality in the automobile is caused by improper use of air intake and exhaust.
Therefore, in order to overcome the shortcomings of the prior art, a new technical solution is needed in the art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the intelligent control system can sense the air environment of the outside and the inside of the automobile, judge the air quality in the automobile, give an early warning to a driver according to received information and automatically process some bad air conditions, so that the comfort level of the driver and passengers can be increased to a great extent, and the concentration degree of the driver is improved.
Two-way vehicle air conditioner intelligence control system who monitors driver's cabin air quality, characterized by: the system comprises an information collection device, a data processing device and an early warning and emergency processing device, wherein the information collection device is connected with the input end of the data processing device, and the output end of the data processing device is connected with the early warning and emergency processing device; the information collecting device comprises a carbon monoxide sensor I, a particulate matter sensor, a hydrocarbon sensor, an automobile oxygen sensor, a carbon dioxide sensor I and a temperature sensor I which are arranged inside an automobile, and a temperature sensor II, a carbon monoxide sensor II, a carbon dioxide sensor II and an oxygen sensor which are arranged outside the automobile, wherein the carbon monoxide sensor I, the particulate matter sensor, the hydrocarbon sensor, the automobile oxygen sensor and the carbon dioxide sensor I form a sensor module; the data processing device comprises a 51 single chip microcomputer, an input circuit and an output processing circuit; the early warning and emergency processing device comprises an automobile air conditioning system, an alarm system and an automobile control system.
The temperature sensor I and the temperature sensor II are sensors of DS18B20 type; the particle sensor is a GP2Y1014AU model sensor; the carbon monoxide sensor I and the hydrocarbon sensor are MQ-9 composite type sensors; the oxygen sensor is an LGS4O2 model sensor.
The 51 singlechip is the stc89c52 model, receives information collection device data and handles through input loop, carries out corresponding judgement through output processing circuit control emergency processing device.
Through the above design scheme, the utility model discloses following beneficial effect can be brought: the intelligent control system for the automobile air conditioner capable of monitoring the air quality of the cab bidirectionally can sense the air environment where the outside and the inside of the automobile are located and judge the air quality in the automobile, can give an early warning to a driver according to received information and automatically process some bad air conditions, and therefore the comfort level of drivers and passengers can be increased to a great extent and the concentration degree of the driver can be improved.
Further, the utility model discloses can be to the real time monitoring of common gaseous pollutants and particulate matter to indirectly prolong the life of air conditioning system filter.
Drawings
The invention is further described with reference to the following drawings and detailed description:
fig. 1 is the utility model discloses vehicle air conditioner intelligence control system schematic structure of two-way monitoring driver's cabin air quality.
Fig. 2 is the utility model discloses vehicle air conditioner intelligence control system car internal sensor work logic schematic diagram of two-way monitoring driver's cabin air quality.
Fig. 3 is the utility model discloses vehicle air conditioner intelligence control system car external sensor work logic schematic diagram of two-way monitoring driver's cabin air quality.
Fig. 4 is the utility model discloses the integrated logic schematic diagram of vehicle air conditioner intelligence control system of two-way monitoring driver's cabin air quality.
In the figure, 1-a carbon monoxide sensor I, 2-a particulate matter sensor, 3-a hydrocarbon sensor, 4-an automobile oxygen sensor, 5-a temperature sensor I, 6-a temperature sensor II, 7-a carbon monoxide sensor II, 8-an oxygen sensor, 9-51 single-chip microcomputer, 10-an automobile air conditioning system, 11-an alarm system, 12-an automobile control system, 13-a carbon dioxide sensor I and 14-a carbon dioxide sensor II.
Detailed Description
An intelligent control system of an automobile air conditioner for bidirectionally monitoring the air quality of a cab is shown in figure 1 and comprises an information collecting device, a data processing device and an early warning and emergency processing device, wherein the information collecting device is connected with the input end of the data processing device, and the output end of the data processing device is connected with the early warning and emergency processing device; the information collection device comprises a carbon monoxide sensor I1, a particulate matter sensor 2, a hydrocarbon sensor 3, an automobile oxygen sensor 4, a carbon dioxide sensor I13 and a temperature sensor I5 which are arranged inside an automobile, and a temperature sensor II 6, a carbon monoxide sensor II 7, a carbon dioxide sensor II 14 and an oxygen sensor 8 which are arranged outside the automobile, wherein the carbon monoxide sensor I1, the particulate matter sensor 2, the hydrocarbon sensor 3, the automobile oxygen sensor 4 and the carbon dioxide sensor I13 form a sensor module; the data processing device comprises a 51 single chip microcomputer 9, an input loop and an output processing circuit; the early warning and emergency processing device comprises an automobile air conditioning system 10, an alarm system 11 and an automobile control system 12.
The temperature sensor I5 and the temperature sensor II 6 are sensors of a DS18B20 model; the particle sensor 2 is a GP2Y1014AU model sensor; the carbon monoxide sensor I1 and the hydrocarbon sensor 3 are MQ-9 composite type sensors; the oxygen sensor is an LGS4O2 model sensor.
The 51 single chip microcomputer 9 is of the type of stc89c52, receives and processes data of the information collection device through the input loop, and controls the emergency processing device to perform corresponding judgment through the output processing circuit.
The control method of the intelligent control system for the automobile air conditioner for bidirectionally monitoring the air quality of the cab comprises the following steps,
step one, data acquisition
The method comprises the following steps of installing an information collecting device at sampling points inside and outside an automobile, collecting air quality information inside and outside the automobile, wherein the transmission periods of a temperature sensor I5 and a temperature sensor II 6 are 0.5 second, the transmission periods of a carbon monoxide sensor II 7 and an oxygen sensor 8 are 0.1 second, and the transmission periods of a sensor module are 0.3 second;
specifically, in order to better realize the bidirectional monitoring function and realize the accuracy and precision of data collected inside and outside the vehicle, four groups of sampling points are arranged inside and outside the vehicle, and corresponding sensors are respectively arranged at an air inlet of an air conditioner filter of the vehicle, an air outlet of an air conditioner in the vehicle and an instrument panel of the vehicle at the sampling points in the vehicle, wherein the total number of the sampling points is three; the outside of the vehicle is provided with a corresponding sensor at the door of the vehicle body.
Step two, data processing
Transmitting the air quality information data acquired in the step one to a 51 single-chip microcomputer 9 through an input loop, and comparing the 51 single-chip microcomputer 9 with the air quality information data through setting a sensor experiment threshold value to perform data processing, wherein the data processing comprises processing carbon monoxide and formaldehyde information, processing concentration ratio information between carbon dioxide and oxygen, and processing particulate matter concentration information in a vehicle; the result after the information processing is transmitted to the early warning and emergency processing device through the output processing circuit;
the determination method of the sensor threshold value comprises the steps of taking the limit content of harmful gas harmless to human as max, the time for returning to normal as time, the efficiency of an air pump as η, and the forced circulation value required to be set if the vehicle speed correction parameter is v
Therefore, the application compares the gas sensor value with the standard sensor value. The threshold values of the sensors can then be obtained according to the above formula, and can be calibrated.
And for the condition that x and y gases simultaneously exceed the standard, firstly determining the safe return normal time t according to the damage degree of the gases to the human body. Secondly, the weights of different gases are distributed according to x K1+y×K2A weighted fit is performed. A maximum max and a minimum min are set according to the above. For the condition that x, y and z gases exceed standards simultaneously, the trend of the gases is predicted by depending on the stored single gas data, the functions f (x), g (y) and h (z) are reserved, and then all parameters of the time series prediction method are determined.
And simultaneously acquiring the gas data around the vehicle body while performing a threshold experiment, and determining the pollutant gathering speed by combining with the data consulted on the network and measuring the content of each target gas pollutant at the exhaust port of the vehicle, the air conditioner filter of the vehicle, the surrounding environment of the vehicle and the cab, and estimating the time required for reaching the danger threshold. And the method is used for making a foundation for the development of a prediction algorithm in the future.
Step three, processing the action of the automobile system
The early warning and emergency processing device receives 51 the judgment result of the single chip microcomputer 9, controls an automobile system to carry out air quality regulation in the automobile, and after the data processing of the step two, the formaldehyde and the carbon monoxide exceed an experimental threshold value 1, automatically descends a window through an automobile control system 12, exceeds an experimental threshold value 2, starts an alarm system 11, and simultaneously starts a built-in fan of an automobile air conditioning system 10 to reduce the concentration of harmful substances;
particle processing, namely after the data processing in the second step, controlling the operation of the internal circulation of the automobile air conditioning system 10 when the content of outdoor particles exceeds an experimental threshold; when the internal particulate matter exceeds the experiment threshold value, the automobile control system 12 judges the content of the internal and external particulate matters, the filter element is not blocked, the particulate matters in the cab are normal, and the internal circulation is continuously maintained;
and (3) processing carbon dioxide and oxygen, measuring the content numerical values of the carbon dioxide and the oxygen after the data processing in the second step, preprocessing to obtain the ratio of the carbon dioxide to the oxygen exceeding the experiment threshold, and performing external circulation operation of the air-conditioning system.
If the x and y gases exceed the standard at the same time, judging the weight of the gas according to the specific content and the damage degree of the gas to the human body, and fitting by depending on the weight.
If it exceeds a predetermined limit value max, a series of operations such as forcibly lowering the window, activating the air conditioning ventilation, and the like are performed. If the minimum value is less than the preset minimum value min, a series of operations such as switching internal circulation, alarming to lift the car window and the like are carried out.
If a plurality of gases such as x, y, z and the like simultaneously exceed the standard, predicting the gases according to a time series prediction method, and then comparing the predicted values with extreme values according to the predicted values.
According to the control logic diagram of the in-vehicle sensor shown in fig. 2, the concentrations of carbon dioxide, formaldehyde, carbon monoxide, oxygen and particulate matters in the vehicle are sensed, and corresponding concentration information is converted into voltage information and input into the single chip microcomputer for processing. The carbon monoxide and the formaldehyde are classified into one type, the carbon monoxide and the formaldehyde are toxic and can cause safety threat to drivers and passengers, the single chip microcomputer firstly processes information of the carbon monoxide and the formaldehyde, then the carbon dioxide and the oxygen exist, the ratio of the concentrations of the carbon dioxide and the oxygen affects the comfort of the environment in the vehicle, and finally the concentration information of particles in the vehicle is analyzed. And judging the concentrations (whether the concentrations exceed the corresponding threshold values) of the components, and making corresponding reaction operation according to the judgment result of the system.
The concentrations of carbon monoxide and particulate matter were measured as shown in the off-board sensor control logic diagram of fig. 3. And similarly, the concentration information of the particles is converted into voltage information which is input into the singlechip to be correspondingly processed. The concentration of the carbon monoxide at the outer side also influences the safety of drivers and passengers, the vehicle problem can be detected by monitoring the concentration of the carbon monoxide, and the concentration of the particulate matters at the outer side is related to whether the windows can be opened or not for ventilation. And judging whether the concentration exceeds a corresponding gas threshold value in the singlechip, and performing corresponding processing according to the judgment result.
The utility model discloses an integrated logic diagram of control system is shown in FIG. 4, and the content signal conversion that gas content signal and particulate matter sensor gathered that gather all kinds of gas sensor is voltage signal input to the singlechip, carries out the analysis to these signals in the singlechip and classifies, judges the class that input signal belongs to, and then judges which kind of operation should be carried out to air conditioning system, realizes controlling functions such as opening and closing of vehicle air conditioning system internal-external loop switching, warning light. Therefore, the automobile air conditioning system does not depend or less depends on the operation of a driver, and the automatic control and the intelligent control of the air conditioning system in the automobile are realized. In addition, the system can be connected in parallel to the air conditioning system circuit and is compatible with manual control, the original circuit and control habit of the automobile are not changed, meanwhile, the system can automatically identify and eliminate some short-time accidental interference, the change of internal and external circulation of the automobile air conditioning system can be reliably controlled, and a system integration diagram is shown in fig. 4. The integrated operation of the air conditioning system, the information collecting device, the data processing device, the early warning device and the emergency device is realized through system integration.
Claims (3)
1. Two-way vehicle air conditioner intelligence control system who monitors driver's cabin air quality, characterized by: the system comprises an information collection device, a data processing device and an early warning and emergency processing device, wherein the information collection device is connected with the input end of the data processing device, and the output end of the data processing device is connected with the early warning and emergency processing device; the information collection device comprises a carbon monoxide sensor I (1), a particulate matter sensor (2), a hydrocarbon sensor (3), an automobile oxygen sensor (4), a carbon dioxide sensor I (13), a temperature sensor I (5) which are arranged inside an automobile, and a temperature sensor II (6), a carbon monoxide sensor II (7), a carbon dioxide sensor II (14) and an oxygen sensor (8) which are arranged outside the automobile, wherein the carbon monoxide sensor I (1), the particulate matter sensor (2), the hydrocarbon sensor (3), the automobile oxygen sensor (4) and the carbon dioxide sensor I (13) form a sensor module; the data processing device comprises a 51 single chip microcomputer (9), an input loop and an output processing circuit; the early warning and emergency processing device comprises an automobile air conditioning system (10), an alarm system (11) and an automobile control system (12).
2. The intelligent control system for the automobile air conditioner for bidirectionally monitoring the air quality of the cab as claimed in claim 1, wherein: the temperature sensor I (5) and the temperature sensor II (6) are sensors of a DS18B20 model; the particle sensor (2) is a sensor of GP2Y1014AU model; the carbon monoxide sensor I (1) and the hydrocarbon sensor (3) are MQ-9 composite type sensors; the oxygen sensor is an LGS4O2 model sensor.
3. The intelligent control system for the automobile air conditioner for bidirectionally monitoring the air quality of the cab as claimed in claim 1, wherein: the 51 single chip microcomputer (9) is of the type of stc89c52, receives and processes data of the information collection device through the input loop, and controls the emergency processing device to perform corresponding judgment through the output processing circuit.
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| CN201921735295.1U CN210502181U (en) | 2019-10-16 | 2019-10-16 | Automobile air conditioner intelligent control system capable of monitoring air quality of cab bidirectionally |
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| CN201921735295.1U CN210502181U (en) | 2019-10-16 | 2019-10-16 | Automobile air conditioner intelligent control system capable of monitoring air quality of cab bidirectionally |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110549823A (en) * | 2019-10-16 | 2019-12-10 | 吉林大学 | Automobile air conditioner intelligent control system and method for bidirectionally monitoring air quality of cab |
| CN112208292A (en) * | 2020-09-17 | 2021-01-12 | 东风商用车有限公司 | Control method and control system for carbon monoxide concentration in cab |
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2019
- 2019-10-16 CN CN201921735295.1U patent/CN210502181U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110549823A (en) * | 2019-10-16 | 2019-12-10 | 吉林大学 | Automobile air conditioner intelligent control system and method for bidirectionally monitoring air quality of cab |
| CN112208292A (en) * | 2020-09-17 | 2021-01-12 | 东风商用车有限公司 | Control method and control system for carbon monoxide concentration in cab |
| CN112208292B (en) * | 2020-09-17 | 2022-03-15 | 东风商用车有限公司 | Control method and control system for carbon monoxide concentration in cab |
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