CN108749572A - A kind of vehicle outer temperature display modification method on automobile instrument - Google Patents
A kind of vehicle outer temperature display modification method on automobile instrument Download PDFInfo
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- CN108749572A CN108749572A CN201810322281.0A CN201810322281A CN108749572A CN 108749572 A CN108749572 A CN 108749572A CN 201810322281 A CN201810322281 A CN 201810322281A CN 108749572 A CN108749572 A CN 108749572A
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- 238000002715 modification method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Instrument Panels (AREA)
Abstract
A kind of outer temperature display modification method of vehicle on automobile instrument, the present invention relates to temperature display modification methods outside vehicle.The present invention is inaccurate in order to solve the external temperature indicating value shown in automobile instrument, and by environmental disturbances quickly variation is occurred for data, the shortcomings that can not restoring.Temperature outside vehicle is divided into low speed to the present invention and high speed two states are handled.When low speed, from duration of IG ON to IG OFF when within 1 hour, because there is amount of residual heat in engine bin, again when IG ON, the show value before IG OFF is shown;If the IG OFF duration is more than 1 hour, the temperature of actual acquisition is shown when IG ON again;When high speed, outer temperature numerical value when by low speed is slowly increased at any time, it is made to move closer to the numerical value that outer temperature sensor currently acquires;When outer temperature numerical value is more than current outer temperature sensor measured value, using current outer warm collection value as displays temperature.The present invention is used for automobile external Temperature Treatment field.
Description
Technical field
The present invention relates to temperature display modification methods outside the vehicle on automobile instrument.
Background technology
With the fast development of automobile industry, automobile instrument has developed to the combination of liquid crystal display from traditional machinery instrument
Property instrument.Consumer's requirement growing day by day to automobile, technical innovation is necessary, increases the driving experience of client, joy
Happy audio-visual experience, the security guarantee of driving.More fully prompt message, warning message need to be shown by instrument.
The outer temperature display of vehicle is exactly one in automobile instrument function, the outer temperature display data of vehicle on automobile instrument to
It is critically important for family, once the outer temperature display of vehicle is inaccurate, can have a great impact to the user of vehicle, low-temperature warning prompting is driven
The person of sailing takes care driving.Low-temperature warning illustrates that outside air temperature is very low, it is possible that freezing, prompting driver pays attention to going on road surface
Vehicle safety, avoids bringing to a halt, in order to avoid occur dangerous.It hazes in addition, being also careful to notice glass, preferably opens interior warm wind, allow
Warm wind blows to front windshield and seat, prevents from hazing.
Invention content
It is inaccurate that the purpose of the present invention is to solve the external temperature indicating values shown in existing automobile instrument, and data are by environment
Quickly variation occurs for interference, the shortcomings that can not restoring, and proposes a kind of outer temperature display modification method of the vehicle on automobile instrument.
A kind of outer temperature display modification method of vehicle on automobile instrument includes the following steps:
Step 1:Judge IG states, if IG OFF or IG ON to IG OFF, thens follow the steps two;If IG ON, then
Execute step 3;If IG OFF to IG ON, four are thened follow the steps;The IG is ignition signal;
Step 2:Outer temperature is not shown, is not dealt with;
Step 3:Judge speed state, when speed is from high speed to low speed, TEMoldHolding becomes outer temperature before low speed
Value;Otherwise by the outer temperature value storage of last time display to TEMold;The TEMoldFor warm numerical value outside automobile;
Step 4:Judge whether automobile instrument initializes, if not initializing, TEMold=TEMnew;Otherwise judge IG ON
Duration thens follow the steps five if being less than or equal to 1 hour from IG OFF to the IG ON duration;If from IG OFF to IG
The duration of ON is more than 1 hour, thens follow the steps six;The TEMnewFor the calculation of the sensor measured value sent according to EMS
Go out value;
Step 5:TEMoldTEM before=IG OFFDisplay;The TEMDisplayIt is shown for instrument, revised outer temperature number
Value;
Step 6:Judge whether to meet setting condition, the TEM if meetingoldTEM before=IG OFFDisplay+ C, otherwise
TEMold=TEMnew;Wherein C is threshold value, -1≤C≤1.
Beneficial effects of the present invention are:
Two states are handled when temperature outside vehicle being divided into low speed to instrument the method for the present invention and when high speed.Low speed
When, from duration of IG ON to IG OFF when within 1 hour, because having amount of residual heat in engine bin, influence outer temperature sensing
The measured value of device, at this time again IG ON when, show the show value before IG OFF;If the IG OFF duration is more than 1 hour,
The temperature (TAMnew) of actual acquisition is shown when IG ON again;When high speed, outer temperature numerical value (TAMold) when by low speed with
Time is slowly increased (TAMold+Kt), it is made to move closer to the numerical value that outer temperature sensor currently acquires;When the outer temperature being slowly increased
When numerical value is more than current outer temperature sensor measured value, using current outer warm collection value (TAMnew) as displays temperature.Solution of the present invention
The interior external temperature indicating value shown of existing automobile instrument of having determined is inaccurate, can not once data are occurred quickly to change by environmental disturbances
The problem of recovery, external temperature indicating value accuracy rate of the present invention are 98% or more.
Description of the drawings
Fig. 1 is the flow diagram of the TEM display processing processes of the present invention;
Fig. 2 is the flow diagram of TEMold processing procedures;
Fig. 3 is the flow diagram of speed state processing process;
Fig. 4 is outer temperature show value and corresponding time relationship schematic diagram;
Fig. 5 is that speed defines schematic diagram.
Specific implementation mode
Specific implementation mode one:As shown in Figure 1, the outer temperature display modification method of vehicle on a kind of automobile instrument includes following
Step:
Two states are handled when temperature outside vehicle being divided into low speed to instrument the method for the present invention and when high speed.Low speed
When, from duration of IG ON to IG OFF when within 1 hour, because having amount of residual heat in engine bin, influence outer temperature sensing
The measured value of device, at this time again IG ON when, show the show value before IG OFF;If the IG OFF duration is more than 1 hour,
The temperature (TAMnew) of actual acquisition is shown when IG ON again;When high speed, outer temperature numerical value (TAMold) when by low speed with
Time is slowly increased (TAMold+Kt), it is made to move closer to the numerical value that outer temperature sensor currently acquires;When the outer temperature being slowly increased
When numerical value is more than current outer temperature sensor measured value, using current outer warm collection value (TAMnew) as displays temperature.
Step 1:Judge IG states, if IG OFF or IG ON to IG OFF, thens follow the steps two;If IG ON, then
Execute step 3;If IG OFF to IG ON, four are thened follow the steps;The IG is ignition signal;
Step 2:Outer temperature is not shown, is not dealt with;
Step 3:Judge speed state as shown in figure 3, when speed is from high speed to low speed, TEMoldHolding becomes low vehicle
The value of outer temperature before speed;Otherwise by the outer temperature value storage of last time display to TEMold;The TEMoldFor warm number outside laststate automobile
Value;
Step 4:Judge whether automobile instrument initializes, if not initializing, TEMold=TEMnew;Otherwise judge IG ON
Duration thens follow the steps five if being less than or equal to 1 hour from IG OFF to the IG ON duration;If from IG OFF to IG
The duration of ON is more than 1 hour, thens follow the steps six;The TEMnewFor the calculation of the sensor measured value sent according to EMS
Go out value;
Step 5:TEMoldTEM before=IG OFFDisplay;The TEMDisplayIt is shown for instrument, revised outer temperature number
Value;
Step 6:Judge whether to meet setting condition, the TEM if meetingoldTEM before=IG OFFDisplay+ C, otherwise
TEMold=TEMnew;Wherein C is threshold value, -1≤C≤1.
When low speed, from duration of IG ON to IG OFF when within 1 hour, because having residual heat in engine bin
Amount, influences the measured value of outer temperature sensor, at this time again IG ON when, show that the show value before IG OFF (stores in EEPROM
TEMDisplay);If the IG OFF duration is more than 1 hour, the temperature (TEM of actual acquisition is shown when IG ON againnew);
When high speed, outer temperature numerical value (TEM when by low speedold) it is slowly increased (TEM at any timeold+ Kt), make it gradually
The numerical value currently acquired close to outer temperature sensor;When the outer temperature numerical value being slowly increased is more than current outer temperature sensor measured value,
With current outer warm collection value (TEMnew) it is used as displays temperature.
Input quantity:
1.IG states:IG ON and IG OFF;
2. the calculating value TEM for the outer temperature sensor measured value that instrument is received from vehicle from controller EMSoldAnd TEMnew;
3.IG OFF times (last time IG OFF to this IG ON duration);
4. vehicle velocity V;
5. water temperature T W;
6. the TEM before the IG OFF of storageDisplay;
7. constant coefficient K;
8. every time after from low speed to high speed, the time t (s) of high speed holding;
Output quantity:
1.TEMDisplay, outer temperature corrects acquired value, for instrument output, to TEMDisplay(numerical value is by four houses five after decimal point for rounding
Enter processing, -40 DEG C of indication range~50 DEG C);
Show value calculates as shown in Figure 4:
When low speed:TEMDisplay=MIN [TEMold,TEMnew]
When high speed:TEMDisplay=MIN [TEMold+Kt,TEMnew]
The definition of each parameter in Fig. 4:
TEMDisplay:Modified outer temperature numerical value, shows for instrument.
TEMnew:According to the calculating value (average value of 20 collection values) of the EMS sensor measured values sent;
TEMold:The following situation of value point;
IG OFF to IG ON
A. TEM when being less than or equal to 1 hour from the duration of IG OFF to IG ONoldTEM before=IG OFF is aobvious
Show.
B. when being more than 1 hour from the duration of IG OFF to IG ON;
(1. TW >=A) and (TEMnewTEM before >=IG OFFDisplayWhen), TEMoldTEM before=IG OFFDisplay+C;
2. the TEM of the case where in addition to 1.old=TEMnew(data calculated for the first time);
During IG ON
a.TEMnew=last time TEMDisplayWhen, TEMold=last time TEMDisplay;
B. when speed becomes low speed by high speed, TEMold=become the TEM before low speedDisplay;
Speed definition is as shown in Figure 5.
Experimental Calibration parameter list
Variable | Numerical value |
A | 55 |
B | 3 |
C | 0 |
SPD_Lo | 15 |
SPD_Hi | 25 |
K | 5×10-3 |
Specific implementation mode two:The present embodiment is different from the first embodiment in that:Item is set in the step 6
Part is while meeting following three conditions:
1)TW≥A;Wherein TW is water temperature, and A is threshold value, 50≤A≤60;
2) TEM before TEMnew >=IG OFF shows+B;Wherein B is threshold value, 2≤B≤4;
3) communications status is normal.Automobile external temperature signal is CAN bus signal, and communications status refers to CAN bus state;
Communications status, which is just referring to node in CAN bus, can receive transmission CAN message, and without node time-out, Bus-off etc. is abnormal
Situation occurs.
Other steps and parameter are same as the specific embodiment one.
Specific implementation mode three:The present embodiment is different from the first and the second embodiment in that:As shown in Fig. 2, described
TEMDisplayIt is processed be known as:
The outer temperature sensor temperature value TEM that step (1), instrument are received from vehicle from controller EMS;
Step (2) judges speed state;If low speed state, then follow the steps (3);If high speed state, then hold
Row step (4);The low speed is less than or equal to 15km/h, and high speed is more than or equal to 25km/h;
It is just high speed if being before high speed when speed is between 15km/h-25km/h, if being before low vehicle
Speed is just low speed;Such as present speed is that 30km/h has changed to 20km/h, then 20km/h belongs to high speed;From 10km/
H changes to 20km/h, then 20km/h belongs to low speed;It is thus provided with a return difference, prevents the prominent of height speed state
Become.
Step (3) judges TEMoldAnd TEMnewRelationship takes smaller for TEM in the twoDisplay;
Step (4) judges TEMold+ Kt and TEMnewRelationship takes smaller for TEM in the twoDisplay, wherein K is threshold value, and t is
Time.
Other steps and parameter are the same as one or two specific embodiments.
Specific implementation mode four:Unlike one of present embodiment and specific implementation mode one to three:The step (4)
The value of middle K is 5 × 10-3。
Other steps and parameter are identical as one of specific implementation mode one to three.
Embodiment one:
Modified outer temperature numerical value TEM, shows for instrument.
Receive the calculating value TEM for the outer temperature sensor temperature value that controller EMS is sentnew(20 collection values are averaged
Value)
After instrument IG OFF → IG ON, judge from when being less than or equal to 1 hour the duration of IG OFF to IG ON
TEMoldTEM before=IG OFFDisplay.Judge from when being more than 1 hour the duration of IG OFF to IG ON
1. the TEM before TW >=A and TEMnew >=IG OFFDisplay+ B and when normal communications status, TEMoldBefore=IG OFF
TEMDisplay+C
2. the TEM of the case where in addition to 1.old=TEMnew(data calculated for the first time)
Instrument initializes TEMold=TEMnew(calculate for the first time data), during IG ON
a.TEMnew=last time TEMDisplayWhen, TEMold=last time TEMDisplay
B. when speed becomes low speed by high speed, TEMold=become the TEM before low speedDisplay
The TEM that will be obtainedoldNumerical value is judged according to speed state, when speed state is low speed, takes TEMoldWith
TEMnewIn it is smaller for TEMDisplay;When speed state is high speed, TEM is takenold+ Kt and TEMnewIn it is smaller for TEMDisplay。
The present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, this field
Technical staff makes various corresponding change and deformations in accordance with the present invention, but these corresponding change and deformations should all belong to
The protection domain of appended claims of the invention.
Claims (4)
1. the outer temperature display modification method of vehicle on a kind of automobile instrument, it is characterised in that:The outer temperature of vehicle on the automobile instrument
Degree shows that modification method includes the following steps:
Step 1:Judge IG states, if IG OFF or IG ON to IG OFF, thens follow the steps two;If IG ON, then execute
Step 3;If IG OFF to IG ON, four are thened follow the steps;The IG is ignition signal;
Step 2:Outer temperature is not shown, is not dealt with;
Step 3:Judge speed state, when speed is from high speed to low speed, TEMoldHolding becomes the value of outer temperature before low speed;
Otherwise by the outer temperature value storage of last time display to TEMold;The TEMoldFor warm numerical value outside automobile;
Step 4:Judge whether automobile instrument initializes, if not initializing, TEMold=TEMnew;Otherwise judge that IG ON continue
Time thens follow the steps five if being less than or equal to 1 hour from IG OFF to the IG ON duration;If from IG OFF to IG ON's
Duration is more than 1 hour, thens follow the steps six;The TEMnewFor the calculating of the sensor measured value sent according to EMS
Value;
Step 5:TEMoldTEM before=IG OFFDisplay;The TEMDisplayIt is shown for instrument, revised outer temperature numerical value;
Step 6:Judge whether to meet setting condition, the TEM if meetingoldTEM before=IG OFFDisplay+ C, otherwise TEMold=
TEMnew;Wherein C is threshold value, -1≤C≤1.
2. the outer temperature display modification method of vehicle on a kind of automobile instrument according to claim 1, it is characterised in that:It is described
Condition is arranged in step 6 to be while meeting following three conditions:
1)TW≥A;Wherein TW is water temperature, and A is threshold value, 50≤A≤60;
2) TEM before TEMnew >=IG OFF shows+B;Wherein B is threshold value, 2≤B≤4;
3) communications status is normal.
3. the outer temperature display modification method of vehicle on a kind of automobile instrument according to claim 1 or 2, it is characterised in that:
The TEMDisplayIt is processed be known as:
The outer temperature sensor temperature value TEM that step (1), instrument are received from vehicle from controller EMS;
Step (2) judges speed state;If low speed state, then follow the steps (3);If high speed state, then step is executed
Suddenly (4);The low speed is less than or equal to 15km/h, and high speed is more than or equal to 25km/h;
Step (3) judges TEMoldAnd TEMnewRelationship takes smaller for TEM in the twoDisplay;
Step (4) judges TEMold+ Kt and TEMnewRelationship takes smaller for TEM in the twoDisplay, wherein K is threshold value, when t is
Between.
4. the outer temperature display modification method of vehicle on a kind of automobile instrument according to claim 3, it is characterised in that:It is described
The value of K is 5 × 10 in step (4)-3。
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CN201810322281.0A CN108749572A (en) | 2018-04-11 | 2018-04-11 | A kind of vehicle outer temperature display modification method on automobile instrument |
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Cited By (2)
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CN112539856A (en) * | 2020-11-20 | 2021-03-23 | 奇瑞商用车(安徽)有限公司 | Method for compensating environmental temperature for vehicle |
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CN112539856A (en) * | 2020-11-20 | 2021-03-23 | 奇瑞商用车(安徽)有限公司 | Method for compensating environmental temperature for vehicle |
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