CN106564443A - Vehicle exterior temperature obtaining system and method - Google Patents
Vehicle exterior temperature obtaining system and method Download PDFInfo
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- CN106564443A CN106564443A CN201610889885.4A CN201610889885A CN106564443A CN 106564443 A CN106564443 A CN 106564443A CN 201610889885 A CN201610889885 A CN 201610889885A CN 106564443 A CN106564443 A CN 106564443A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention provides a vehicle exterior temperature obtaining system and method. The vehicle exterior temperature obtaining system comprises a vehicle exterior temperature sensor, an engine cooling water temperature detector and a storing memory module, wherein the vehicle exterior temperature sensor, the engine cooling water temperature detector and the storing memory module are connected with a logical processing unit; and the logical processing unit and the storing memory module are arranged in an automatic air condition controller. The vehicle exterior temperature obtaining system and the method provided by the invention are executed. The method comprises the following steps of according to the logical comparison operation of the temperature value of cooling water, the value of the vehicle exterior temperature sensor and the memory value of the storing memory module, judging the cold starting condition and the hot starting condition of a vehicle when the vehicle is started, and obtaining the accurate vehicle exterior temperature. According to the vehicle exterior temperature obtaining system and the method disclosed by the invention, under a low-power dissipation situation that the automatic air conditioner controller cuts off own power supply, after reigniting is performed again for operating the vehicle, the cold-vehicle condition and the hot-vehicle condition of the vehicle can be accurately judged, the vehicle exterior temperature sensor can also be free from the influence of a radiator and a hot water tank, and an initial value of the vehicle exterior temperature which is close to the actual environmental temperature is obtained.
Description
Technical field
The present invention relates to the cold and hot start-up technique field of automobile, more particularly to a kind of outer temperature acquisition system and method for car.
Background technology
The functional realiey of conventional vehicle automatic air conditioning controller needs following input signal and supports：Outside vehicle interior temperature, car
Temperature, evaporator temperature, car speed etc..As the outer temperature sensor of car is arranged on before vehicle at air-inlet grille, running over
In journey, (when especially speed is relatively low) is easily affected by the heat radiation of radiator and air-conditioning condenser, causes the outer temperature sensor of car
The outer temperature value of the car of detection is not real ambient temperature.Also, as automobile is got over to the quiescent dissipation required value of ECU
Come lower, automatic air conditioning controller is designed as flame-out rear a period of time internal cutting off power itself to reduce quiescent dissipation；And it is automatic
Air-conditioner controller is in the case of cut-out power itself, it is impossible to judges the cold and hot starting state of vehicle, causes operation of lighting a fire again
After vehicle, the outer temperature sensor of car is because being affected to know the outer temperature of real car by radiator and boiler.
The content of the invention
The present invention provides a kind of outer temperature of car and obtains system and method, solves by coolant water temperature angle value, the outer temperature of car
The logic contrast operation of sensor values and automatic air conditioning controller memory value come judge Current vehicle start when the cold and hot startup of vehicle
State simultaneously obtains the technical problem of the outer temperature of accurate car.
To solve above technical problem, the present invention provides a kind of outer temperature of car and obtains system, including：With Logical processing unit
The car of connection outer temperature sensor, engine cooling water temperature detector, store-memory module；The Logical processing unit with deposit
Storage memory module is in automatic air conditioning controller；
The outer temperature sensor of the car, the outer temperature value of car and the outer temperature of current car during for exporting last flame-out
Value；
The engine cooling water temperature detector, coolant water temperature angle value when last flame-out for exporting and current
Coolant water temperature angle value；
The store-memory module, the outer temperature value of car, the outer temperature of current car during for storing described last flame-out
Coolant water temperature angle value, current coolant water temperature angle value when value and the flame-out last time；It is additionally operable to store the outer temperature of current car
The corresponding water temperature drop threshold value of angle value and low water temperature threshold value；
The Logical processing unit, for logic contrast behaviour is carried out to the above-mentioned numerical value of the store-memory module stores
Make, to judge the cold and hot starting state of automobile, and the outer temperature initial value of car is determined according to the cold and hot starting state of automobile.
Further, the logic contrast operation that the Logical processing unit is carried out includes first time logic contrast operation and
Secondary logic contrast operation；After automatic air conditioning controller is flame-out and in the case of cutting off power itself, igniting operation car again
First time logic contrast operation is carried out after.
Further, the first time logic contrast judge process is：If the outer temperature value of current car was put out less than the last time
The outer temperature value of car when fiery, or temperature value is more than current coolant water temperature angle value, or current cooling water outside current car
Temperature value then exports the outer temperature value of current car initial as the outer temperature of car more than coolant water temperature angle value during last stopping working
Value, otherwise carries out second logic contrast operation.
Further, second logic contrast operation's process is：If the cooling water temperature of last brennschuluss time
Value deducts the difference of current coolant water temperature angle value and is less than low water more than water temperature drop threshold value, or current coolant water temperature angle value
Warm threshold value, then export the outer temperature value of current car as the outer temperature initial value of car, the outer temperature of car when otherwise exporting last flame-out
Angle value is used as the outer temperature initial value of car.
Further, the water temperature drop threshold value and low water temperature threshold value are demarcated by previous experiments and draw and be stored in described depositing
In storage memory module.
The present invention also provides a kind of car outer method for acquiring temperature, it is characterised in that including implemented below step：
A. cold start is judged whether according to first time logic contrast operation, in this way execution step b, otherwise execution step c；
B. the outer temperature value of current car is used as the outer temperature initial value of car；
C. corresponding water temperature drop threshold value and low water temperature threshold value are found out according to the outer temperature value of current car；
D. cold start is judged whether according to second logic contrast operation, returns execution step b in this way, otherwise perform step
Rapid e；
The outer temperature value of car when e. using last flame-out is used as at the beginning of the outer temperature of car on display panel during this automobile starting
Initial value.
Further, in step a, first time logic contrast operation process is：If the outer temperature value of current car is little
The outer temperature value of car when last flame-out, or the outer temperature value of current car is more than current coolant water temperature angle value, or work as
More than coolant water temperature angle value during last stopping working, then execution step b, otherwise carries out second logic to front coolant water temperature angle value
Contrast operation.
Further, in step e, second logic contrast operation's process is：If the last brennschuluss time
Coolant water temperature angle value deduct the difference of current coolant water temperature angle value more than water temperature drop threshold value, or current coolant water temperature
Angle value is less than low water temperature threshold value, then return execution step b, otherwise execution step e.
Further, the water temperature drop threshold value and low water temperature threshold value are demarcated by previous experiments and draw and be stored in described depositing
In storage memory module.
The outer temperature of a kind of car that the present invention is provided obtains system and method, by coolant water temperature angle value, the outer temperature sensing of car
The logic contrast operation of the memory value of device value and store-memory module come judge Current vehicle start when the cold and hot starting state of vehicle
And the outer temperature of accurate car is obtained, in the case where automatic air conditioning controller cuts off the low-power consumption of power itself, igniting again is transported
After driving, can accurately judge the cold car and Re Che starting states of vehicle, and obtain the car for more pressing close to real-world temperature
Outer temperature initial value.
Description of the drawings
Fig. 1 is the structure chart that the outer temperature of a kind of car that the present invention is provided obtains system；
Fig. 2 is a kind of flow chart of the outer method for acquiring temperature of car that the present invention is provided.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described.The value size of following components and parts is only preferred embodiment, does not constitute limiting the scope of the invention.
Referring to Fig. 1, it is a kind of structure chart of the outer temperature acquisition system of car that the present invention is provided.In the present embodiment, it is described
A kind of outer temperature of car obtain system, including：The outer temperature sensor 20, engine cool of car being connected with Logical processing unit 10
Coolant-temperature gage detector 30, store-memory module 40；The Logical processing unit 10 is located at automatic air condition with store-memory module 40
In controller 50；
The outer temperature sensor 20 of the car, the outer temperature value EEP_OAT of car during for exporting last flame-out and current
The outer temperature value Cur_OAT of car；
The engine cooling water temperature detector 30, coolant water temperature angle value EEP_ during for exporting last flame-out
HCT and current coolant water temperature angle value Cur_HCT；
The store-memory module 40, it is the outer temperature value EEP_OAT of car during for storing described last flame-out, current
Coolant water temperature angle value EEP_HCT, current coolant water temperature angle value when the outer temperature value Cur_OAT of car and the flame-out last time
Cur_HCT；It is additionally operable to store outer corresponding water temperature drop threshold values DiffHct of temperature value Cur_OAT of current car and low water temperature threshold
Value LimitHct；
The Logical processing unit 10, for carrying out logic contrast to the above-mentioned numerical value that the store-memory module 40 is stored
Operation, to judge the cold and hot starting state of automobile, and determines the outer temperature initial value Init_OAT of car according to the cold and hot starting state of automobile.
In the present embodiment, the logic contrast operation that the Logical processing unit 10 is carried out includes first time logic contrast behaviour
Make and second logic contrast operation；After automatic air conditioning controller 50 is flame-out and in the case of cutting off power itself, point again
First time logic contrast operation is carried out after fire operation vehicle.If the outer temperature value Cur_OAT of current car is less than last stopping working
The outer temperature value EEP_OAT of car, or the outer temperature value Cur_OAT of current car is more than current coolant water temperature angle value Cur_HCT,
Or current coolant water temperature angle value Cur_HCT is then exported current more than coolant water temperature angle value EEP_HCT during last stopping working
The outer temperature value Cur_OAT of car as the outer temperature initial value Init_OAT of car, otherwise carry out second logic contrast operation；It is described
Second logic contrast operation's process be：If coolant water temperature angle value EEP_HCT of last brennschuluss time deducts current cooling
The difference of water temperature angle value Cur_HCT is little more than water temperature drop threshold value DiffHct, or current coolant water temperature angle value Cur_HCT
In low water temperature threshold value LimitHct, then the outer temperature value Cur_OAT of current car is exported as the outer temperature initial value Init_OAT of car,
The outer temperature value EEP_OAT of car when otherwise exporting last flame-out is used as the outer temperature initial value Init_OAT of car.
In the present embodiment, water temperature drop threshold value DiffHct and low water temperature threshold value LimitHct pass through previous experiments
Demarcation draws and is stored in the store-memory module 40.
Referring to Fig. 2, it is a kind of flow chart of the outer method for acquiring temperature of car that the present invention is provided.A kind of car that the present invention is provided
Outer method for acquiring temperature, including implemented below step：
A. cold start is judged whether according to first time logic contrast operation, in this way execution step b, otherwise execution step c；
B. the outer temperature value Cur_OAT of current car is used as the outer temperature initial value Init_OAT of car；
C. corresponding water temperature drop threshold value DiffHct and low water temperature are found out according to the outer temperature value Cur_OAT of current car
Threshold value LimitHct；
D. cold start is judged whether according to second logic contrast operation, returns execution step b in this way, otherwise perform step
Rapid e；
The outer temperature value EEP_OAT of car when e. using last flame-out as the car on display panel during this automobile starting outside
Temperature initial value Init_OAT.
In the present embodiment, in step a, first time logic contrast operation process is：If the outer temperature of current car
Value Cur_OAT is more than less than the outer temperature value EEP_OAT of car during last stopping working, or the outer temperature value Cur_OAT of current car
Current coolant water temperature angle value Cur_HCT, or current coolant water temperature angle value Cur_HCT is more than cooling during last stopping working
Water temperature angle value EEP_HCT, then execution step b, otherwise carries out second logic contrast operation.
Second logic contrast operation's process in step e be：If the cooling water temperature of last brennschuluss time
Value EEP_HCT deducts the difference of current coolant water temperature angle value Cur_HCT more than water temperature drop threshold value DiffHct, or currently
Coolant water temperature angle value Cur_HCT be less than low water temperature threshold value LimitHct, then return execution step b, otherwise execution step e；Institute
State water temperature drop threshold value DiffHct and low water temperature threshold value LimitHct to draw by previous experiments demarcation and be stored in the storage note
Recall in module 40.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (9)
1. a kind of outer temperature of car obtains system, it is characterised in that：Including the outer temperature sensor of the car being connected with Logical processing unit,
Engine cooling water temperature detector, store-memory module；The Logical processing unit is with store-memory module located at automatically empty
In adjusting controller；
The outer temperature sensor of the car, the outer temperature value of car and the outer temperature value of current car during for exporting last flame-out；
The engine cooling water temperature detector, the coolant water temperature angle value and current cooling during for exporting last flame-out
Water temperature angle value；
The store-memory module, the outer temperature value of car during for storing described last flame-out, the outer temperature value of current car and
Coolant water temperature angle value, current coolant water temperature angle value when described last flame-out；It is additionally operable to store the outer temperature value of current car
Corresponding water temperature drop threshold value and low water temperature threshold value；
The Logical processing unit, for carrying out logic contrast operation to the above-mentioned numerical value of the store-memory module stores, with
Judge the cold and hot starting state of automobile, and the outer temperature initial value of car is determined according to the cold and hot starting state of automobile.
2. a kind of outer temperature of car as claimed in claim 1 obtains system, it is characterised in that：What the Logical processing unit was carried out
Logic contrast operation includes first time logic contrast operation and second logic contrast operation；After automatic air conditioning controller is flame-out
And in the case of cutting off power itself, first time logic contrast operation is carried out after igniting operation vehicle again.
3. a kind of outer temperature of car as claimed in claim 2 obtains system, it is characterised in that the first time logic contrast judges
Process is：If the outer temperature value of current car is big less than the outer temperature value of car during last stopping working, or the outer temperature value of current car
Coolant water temperature angle value when current coolant water temperature angle value, or current coolant water temperature angle value were stopped working more than the last time, then
The outer temperature value of the current car of output otherwise carries out second logic contrast operation as the outer temperature initial value of car.
4. a kind of outer temperature of car obtains system as claimed in claim 2 or claim 3, it is characterised in that second logic contrast
Operating process is：If the difference that the coolant water temperature angle value of last brennschuluss time deducts current coolant water temperature angle value is more than water temperature
Falling-threshold value, or current coolant water temperature angle value is less than low water temperature threshold value, then export the outer temperature value of current car as car outside
Temperature initial value, the outer temperature value of car when otherwise exporting last flame-out is used as the outer temperature initial value of car.
5. a kind of outer temperature of car as described in claim 1 or 4 obtains system, it is characterised in that：The water temperature drop threshold value and
Low water temperature threshold value is demarcated by previous experiments and draws and be stored in the store-memory module.
6. the outer method for acquiring temperature of a kind of car, it is characterised in that including implemented below step：
A. cold start is judged whether according to first time logic contrast operation, in this way execution step b, otherwise execution step c；
B. the outer temperature value of current car is used as the outer temperature initial value of car；
C. corresponding water temperature drop threshold value and low water temperature threshold value are found out according to the outer temperature value of current car；
D. cold start is judged whether according to second logic contrast operation, returns execution step b, otherwise execution step e in this way；
The outer temperature value of car when e. using last flame-out is used as the outer temperature initial value of car on display panel during this automobile starting.
7. the outer method for acquiring temperature of a kind of car as claimed in claim 5, it is characterised in that in step a, described first
Secondary logic contrast operation process is：If the outer temperature value of current car is less than the outer temperature value of car during last stopping working, or currently
The outer temperature value of car be more than current coolant water temperature angle value, or current coolant water temperature angle value more than it is last flame-out when it is cold
But water temperature angle value, then execution step b, otherwise carries out second logic contrast operation.
8. the outer method for acquiring temperature of a kind of car as claimed in claim 6, it is characterised in that in step e, described second
Secondary logic contrast operation process is：If the coolant water temperature angle value of last brennschuluss time deducts the difference of current coolant water temperature angle value
Value is less than low water temperature threshold value more than water temperature drop threshold value, or current coolant water temperature angle value, then return execution step b, otherwise
Execution step e.
9. a kind of outer method for acquiring temperature of car as described in claim 6 or 8, it is characterised in that：The water temperature drop threshold value and
Low water temperature threshold value is demarcated by previous experiments and draws and be stored in the store-memory module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610889885.4A CN106564443B (en) | 2016-10-12 | 2016-10-12 | System and method for acquiring temperature outside vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610889885.4A CN106564443B (en) | 2016-10-12 | 2016-10-12 | System and method for acquiring temperature outside vehicle |
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| CN106564443A true CN106564443A (en) | 2017-04-19 |
| CN106564443B CN106564443B (en) | 2020-05-22 |
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| CN201610889885.4A Active CN106564443B (en) | 2016-10-12 | 2016-10-12 | System and method for acquiring temperature outside vehicle |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108556631A (en) * | 2018-04-11 | 2018-09-21 | 航天科技控股集团股份有限公司 | automobile external temperature signal processing method |
| CN113696692A (en) * | 2021-07-26 | 2021-11-26 | 合肥长安汽车有限公司 | Method for acquiring temperature outside vehicle |
| US20220075540A1 (en) * | 2020-04-14 | 2022-03-10 | Micron Technology, Inc. | Adjusting trim settings to improve memory performance or reliability |
| CN115366680A (en) * | 2022-09-30 | 2022-11-22 | 重庆长安汽车股份有限公司 | Method for displaying temperature outside vehicle |
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| CN108556631A (en) * | 2018-04-11 | 2018-09-21 | 航天科技控股集团股份有限公司 | automobile external temperature signal processing method |
| US20220075540A1 (en) * | 2020-04-14 | 2022-03-10 | Micron Technology, Inc. | Adjusting trim settings to improve memory performance or reliability |
| CN113696692A (en) * | 2021-07-26 | 2021-11-26 | 合肥长安汽车有限公司 | Method for acquiring temperature outside vehicle |
| CN113696692B (en) * | 2021-07-26 | 2023-12-22 | 合肥长安汽车有限公司 | Method for acquiring temperature outside vehicle |
| CN115366680A (en) * | 2022-09-30 | 2022-11-22 | 重庆长安汽车股份有限公司 | Method for displaying temperature outside vehicle |
| CN115366680B (en) * | 2022-09-30 | 2024-05-14 | 重庆长安汽车股份有限公司 | Method for displaying temperature outside vehicle |
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