WO2018121748A1 - 一种汽车座椅加热温度控制方法、装置及系统 - Google Patents

一种汽车座椅加热温度控制方法、装置及系统 Download PDF

Info

Publication number
WO2018121748A1
WO2018121748A1 PCT/CN2017/119933 CN2017119933W WO2018121748A1 WO 2018121748 A1 WO2018121748 A1 WO 2018121748A1 CN 2017119933 W CN2017119933 W CN 2017119933W WO 2018121748 A1 WO2018121748 A1 WO 2018121748A1
Authority
WO
WIPO (PCT)
Prior art keywords
ntc
temperature
heating
temperature value
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/119933
Other languages
English (en)
French (fr)
Inventor
李敬华
蒋开文
侯黎恒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Automobile Group Co Ltd
Original Assignee
Guangzhou Automobile Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou Automobile Group Co Ltd filed Critical Guangzhou Automobile Group Co Ltd
Priority to US16/304,141 priority Critical patent/US11505098B2/en
Publication of WO2018121748A1 publication Critical patent/WO2018121748A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00Control of temperature
    • G05D23/19Control of temperature characterised by the use of electric means
    • G05D23/1902Control of temperature characterised by the use of electric means characterised by the use of a variable reference value
    • G05D23/1904Control of temperature characterised by the use of electric means characterised by the use of a variable reference value variable in time
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/56Heating or ventilating devices
    • B60N2/5678Heating or ventilating devices characterised by electrical systems
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/16Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
    • G01K7/22Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00Control of temperature
    • G05D23/19Control of temperature characterised by the use of electric means
    • G05D23/20Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor

Definitions

  • the invention belongs to the technical field of vehicle seat heating control, and in particular relates to a method, device and system for controlling heating temperature of a car seat.
  • HVSM Heated/Ventilated Seat Module
  • the seat surface temperature should be as fast as possible from the ambient temperature to the desired temperature value and stabilized near the temperature value, that is, from the seat heating to the seat surface temperature is stable at the expected value as much as possible short.
  • the seat surface temperature rises to the desired temperature value, it should always change within a certain fluctuation range (for example, the fluctuation range is generally set to ⁇ 1 °C), and the seat surface temperature should not exceed the expected value. Especially at the highest level.
  • the fluctuation range is generally set to ⁇ 1 °C
  • the seat heating pad supplier is generally in a certain constant ambient temperature (according to the OEM requirements, for example, the general company requirements are 23 ° C, Ford company requirements is 30 ° C ), the resistance value of the NTC (negative temperature coefficient) temperature sensor in the seat heating device (such as the heating pad) is measured when the seat surface temperature is stabilized at the temperature value required by the three heating positions.
  • the HVSM module supplier uses the NTC resistance of the corresponding three heating gears as the target value in its control algorithm. When the seat is opened and heated, the NTC resistance decreases with the temperature rise to a certain distance close to the target resistance.
  • the controller in the HVSM module begins to intervene in the temperature control, opens/opens the seat heating at a certain duty cycle, and gradually changes.
  • the duty cycle of the control circuit is such that the NTC resistance value is slowly and smoothly approaching the target resistance.
  • the controller controls the seat heating operation with a fixed duty cycle so that the seat surface temperature stabilizes near the desired value.
  • the existing control methods of the existing seat heating controller suppliers can generally meet the target b).
  • the target a due to the problem of the time point of the controller intervening in the temperature control and the temperature control method, there are three cases: First, the controller intervenes in the temperature control time too early, the seat surface temperature will not reach the expected value, the heating rate will slow down and the heating rate will be slowed down. The seat surface temperature takes a long time to reach the desired temperature value (for example, some models need 40 In the second, the above process can be completed. Second, the controller is involved in the temperature control time too late, which will cause the seat surface temperature to exceed the expected value (or “overshoot”). Third, the controller intervenes in the temperature control to the seat surface. During the final stabilization of the temperature, the temperature of the seat surface fluctuates greatly due to insufficient control methods, for example, exceeding ⁇ 1 °C.
  • the existing temperature control method for the heating of the car seat has more or less disadvantages such as heating too slow, or overheating, or sudden and cold, which affects the user experience.
  • the technical problem to be solved by the present invention is to provide a method, device and system for controlling the heating temperature of a car seat, which can quickly reach the desired value of the surface of the car seat and stabilize at the desired value.
  • an aspect of an embodiment of the present invention provides a car seat heating temperature control method, including the following steps:
  • the on/off of the seat heating device is controlled in stages, so that the seat surface temperature reaches and stabilizes at a desired target temperature of the gear position.
  • determining the current heating period according to the temperature value corresponding to the current NTC sensor further comprises:
  • the comparison result is that the temperature value corresponding to the current NTC sensor is higher than or equal to the temperature threshold, it is determined that the current heating period is a stable period, and conversely, it is determined that the current heating period is the initial temperature rising period.
  • the step of controlling the on and off of the seat heating device according to the heating strategy corresponding to each heating period, so that the seat surface temperature reaches and stabilizes at a desired target temperature of the gear position comprises:
  • the seat heating device is controlled to be in the connected state in the heating position until the temperature value corresponding to the NTC sensor reaches the initial temperature corresponding to the gear position.
  • the target temperature of the segment the process is transferred to the approach segment control;
  • the temperature value corresponding to the NTC sensor gradually approaches the gear position.
  • the flow is transferred to the stable segment control;
  • the temperature value corresponding to the NTC sensor is at the NTC target temperature corresponding to the gear position. Fluctuating up and down.
  • the step of controlling the on and off of the seat heating device according to the heating strategy corresponding to each heating period, so that the seat surface temperature reaches and stabilizes at a desired target temperature of the gear position comprises:
  • the temperature value corresponding to the NTC sensor is in the gear position.
  • the corresponding NTC target temperature fluctuates up and down.
  • the step of controlling the intermittent opening and closing of the seat heating device is specifically:
  • the seat heating device When the seat heating is performed, when the temperature value corresponding to the NTC sensor rises to the corresponding closing point temperature value in each on-off cycle, the seat heating device is turned off; when the seat heating device is turned off, when the NTC sensor corresponds to the temperature value Turn the seat heater on when descending to the corresponding opening point temperature value.
  • closing point temperature value and the opening point temperature value in each of the on-off cycles are calculated by the following formula:
  • T_NTC_HeatTurnOFF(n) T_NTC_HeatTurnON(n-1)+deltaT_NTC_Neg-deltaT(n+1);
  • T_NTC_HeatTurnON(n) T_NTC_HeatTurnOFF(n-1)-deltaT_NTC_Neg;
  • T_NTC_HeatTurnOFF(0) T_NTC_MAX_Lx
  • n is the opening heating or closing heating in the current cycle is the nth time in the approaching segment
  • T_NTC_HeatTurnOFF(n) is the closing point temperature value at the nth closing
  • T_NTC_HeatTurnON(n-1) is the n-1th time
  • the opening point temperature value when opening; T_NTC_HeatTurnON(n) is the opening point temperature value at the nth opening
  • deltaT(n+1) is a predetermined power reduction function;
  • T_NTC_MAX_Lx is the target temperature of the initial warming section corresponding to the gear position.
  • the step of the flow to the stable segment control further includes:
  • T_NTC_Control_Lx is the NTC target temperature corresponding to the gear position
  • deltaT_NTC_Neg is a predetermined temperature drop value
  • deltaT_NTC_ApprochToStedy is a predetermined difference judgment threshold
  • the step of controlling the gap opening and closing of the seat heating device is specifically:
  • the seat heating device When the seat heating is performed, when the temperature value corresponding to the NTC sensor rises to the closing point temperature value of the stable section, the seat heating device is turned off; after the seat heating device is turned off, when the temperature value corresponding to the NTC sensor drops to the stable section Turn on the seat heating device when opening the temperature value;
  • the closed point temperature value and the open point temperature value of the stable section are calculated by the following formula:
  • T_NTC_HeatTurnOFF T_NTC_Control_Lx+deltaT_NTC_Neg/2;
  • T_NTC_HeatTurnON T_NTC_Control_Lx-deltaT_NTC_Neg/2;
  • T_NTC_HeatTurnOFF is the closing point temperature value of the stable section
  • T_NTC_HeatTurnON is the opening point temperature value of the stable section
  • T_NTC_Control_Lx is the NTC target temperature corresponding to the gear position
  • deltaT_NTC_Neg is the predetermined temperature drop value.
  • the target temperature, the NTC target temperature, the temperature drop value, the difference judgment threshold, and the power up function of the initial temperature rising section corresponding to each heating gear position are pre-calibrated and stored.
  • a car seat heating temperature control device including:
  • a gear heating period determining unit configured to determine a current heating period according to a temperature value corresponding to the current NTC sensor when opening or switching to a heating gear position, wherein the heating period includes an initial heating period, a approaching segment, and Stable section
  • the segmentation control unit is configured to segmentally control the on and off of the seat heating device according to the heating strategy corresponding to each heating period, so that the seat surface temperature reaches and stabilizes at a desired target temperature of the gear position.
  • the gear position heating period determining unit further comprises:
  • a comparing unit configured to compare a temperature value corresponding to the current NTC sensor with a predetermined temperature threshold
  • a heating period determining unit configured to determine, when the comparison result of the comparing unit is that the temperature value corresponding to the current NTC sensor is higher than or equal to the temperature threshold, determine that the current heating period is a stable period, and vice versa
  • the current heating period is the initial heating period.
  • the segmentation control unit includes:
  • An initial temperature rising section control unit is configured to control the seat heating device to be in a continuous state in the heating gear position until a temperature value corresponding to the NTC sensor reaches a target temperature of an initial temperature rising section corresponding to the gear position;
  • Approaching the segment control unit for controlling the strategy according to the approaching segment of the gear position when the current approaching segment is used, and controlling the temperature value of the NTC sensor by controlling the intermittent opening and closing of the seat heating device Gradually approaching the NTC target temperature corresponding to the gear position;
  • a stability section control unit configured to control a stability period of the gear position when the current is in a stable estimation state, and control a temperature of the NTC sensor in the gear position by controlling the intermittent opening and closing of the seat heating device
  • the corresponding NTC target temperature fluctuates up and down.
  • the approaching segment control unit includes:
  • the seat heating device is turned off; After the device, when the temperature value corresponding to the NTC sensor drops to the corresponding open point temperature value, the seat heating device is turned on.
  • closing point temperature value and the opening point temperature value in each of the on-off cycles are calculated by the following formula:
  • T_NTC_HeatTurnOFF(n) T_NTC_HeatTurnON(n-1)+deltaT_NTC_Neg-deltaT(n+1);
  • T_NTC_HeatTurnON(n) T_NTC_HeatTurnOFF(n-1)-deltaT_NTC_Neg;
  • T_NTC_HeatTurnOFF(0) T_NTC_MAX_Lx
  • n is the opening heating or closing heating in the current cycle is the nth time in the approaching segment
  • T_NTC_HeatTurnOFF(n) is the closing point temperature value at the nth closing
  • T_NTC_HeatTurnON(n-1) is the n-1th time
  • the opening point temperature value when opening; T_NTC_HeatTurnON(n) is the opening point temperature value at the nth opening
  • deltaT(n+1) is a predetermined power reduction function;
  • T_NTC_MAX_Lx is the target temperature of the initial warming section corresponding to the gear position.
  • the approaching segment control unit further includes:
  • the approaching determining unit is configured to determine that the temperature value corresponding to the NTC sensor approaches the NTC target temperature corresponding to the gear position when the following formula is satisfied:
  • T_NTC_Control_Lx is the NTC target temperature corresponding to the gear position
  • deltaT_NTC_Neg is a predetermined temperature drop value
  • deltaT_NTC_ApprochToStedy is a predetermined difference judgment threshold
  • the stability segment control unit specifically includes:
  • the stable section heating switch control unit is configured to close the seat heating device when the temperature value corresponding to the NTC sensor rises to the closing point temperature value of the stable section when the seat heating is performed; when the seat heating device is turned off, when the NTC is turned off When the temperature value corresponding to the sensor drops to the open point temperature value of the stable section, the seat heating device is turned on.
  • the closed point temperature value and the open point temperature value of the stable section are calculated by the following formula:
  • T_NTC_HeatTurnOFF T_NTC_Control_Lx+deltaT_NTC_Neg/2;
  • T_NTC_HeatTurnON T_NTC_Control_Lx-deltaT_NTC_Neg/2;
  • T_NTC_HeatTurnOFF is the closing point temperature value of the stable section
  • T_NTC_HeatTurnON is the opening point temperature value of the stable section
  • T_NTC_Control_Lx is the NTC target temperature corresponding to the gear position
  • deltaT_NTC_Neg is the predetermined temperature drop value.
  • the calibration storage unit is configured to pre-calibrate the target temperature, the NTC target temperature, the temperature drop value, the temperature threshold, the difference judgment threshold, and the power function of the initial temperature rising section corresponding to each heating gear position, and store the power.
  • a car seat heating temperature control system including:
  • a temperature sensor disposed in the car seat for detecting the temperature of the surface of the car seat
  • control device comprising the aforementioned car seat heating temperature control device
  • a seat heating device for heating the car seat according to the control of the segmentation control device.
  • the temperature control strategy of the segmentation is adopted, so that the temperature control intervention timing and the control process are more reasonable, and the seat surface temperature can be made possible. Fast to reach will be stabilized at the expected value; specifically; when the seat heating is first turned on, the current gear position is fully heated, so that the seat surface temperature rises rapidly, when the seat table NTC temperature value reaches the initial target value, The seat heating device is controlled according to the approaching segment control strategy, so that the seat heating device is intermittently turned on and off, and quickly approaches the desired temperature value; then enters the stable section control so that the seat surface temperature is always stabilized near the desired temperature value;
  • the present invention adjusts the control parameters of each heating phase accordingly, thereby avoiding excessive changes in the seat surface temperature
  • the comfort of the seat heating can be improved, and the user feels that the heating is faster and the temperature is more stable.
  • FIG. 1 is a schematic diagram of a main flow of a method for controlling a heating temperature of a car seat provided by the present invention
  • FIG. 2 shows a more detailed flow diagram of step S10 of Figure 1;
  • FIG. 3 shows a more detailed flow chart of step S12 in Figure 1;
  • FIG. 4 is a schematic structural view of a car seat heating temperature control device provided by the present invention.
  • FIG. 5 is a block diagram showing the structure of an embodiment of the approaching segment control unit of Figure 4.
  • FIG. 6 is a block diagram showing the structure of an embodiment of the stabilization section control unit of Figure 4.
  • FIG. 7 is a graph showing an application temperature variation of a method for controlling a heating temperature of a car seat according to the present invention.
  • Figure 8 is a schematic view showing the control principle of the approach segment in Figure 7;
  • Figure 9 is a schematic view showing the control principle of the stable section of Figure 7.
  • FIG. 1 a schematic diagram of a main flow of a method for controlling a heating temperature of a car seat provided by the present invention is shown.
  • the method includes the following steps:
  • Step S10 when opening or switching to a heating gear position, determining a current heating period according to a temperature value corresponding to the current NTC sensor, wherein the heating period includes an initial heating section, a approaching section, and a stabilization section;
  • Step S12 according to the heating strategy corresponding to each heating period, the on/off of the seat heating device is controlled in stages, so that the seat surface temperature reaches and stabilizes at a desired target temperature of the gear position.
  • step S10 further includes:
  • Step S100 comparing a temperature value corresponding to the current NTC sensor with a predetermined temperature threshold
  • Step S102 when the comparison result is that the temperature value corresponding to the current NTC sensor is higher than or equal to the temperature threshold, it is determined that the current heating period is a stable period, and vice versa, determining that the current heating period is an initial temperature rise. segment.
  • step S12 specifically includes:
  • step S120 the seat heating device is controlled to be in the connected state in the heating position until the temperature value corresponding to the NTC sensor reaches the gear position.
  • the flow is transferred to the approaching segment control;
  • Step S121 in the approaching segment control flow, according to the approaching segment control strategy of the gear position, by controlling the intermittent opening and closing of the seat heating device, the temperature value corresponding to the NTC sensor gradually approaches the The target temperature of the NTC corresponding to the gear position, after reaching the predetermined condition, the flow is transferred to the stable segment control;
  • Step S122 in the steady section control flow, according to the stable section control strategy of the gear position, by controlling the intermittent opening and closing of the seat heating device, the temperature value corresponding to the NTC sensor is corresponding to the gear position.
  • the NTC target temperature fluctuates up and down.
  • step S10 If it is determined in step S10 that the current heating period is a stable section, then in step S12, only step S122 is included, that is, the current heating period is a stable section, and then the stable section of the gear position is pressed.
  • the control strategy is to control the temperature of the NTC sensor to fluctuate up and down according to the NTC target temperature corresponding to the gear position by controlling the intermittent opening and closing of the seat heating device.
  • the step S121 includes:
  • the seat heating device When the seat heating is performed, when the temperature value corresponding to the NTC sensor rises to the corresponding closing point temperature value in each on-off cycle, the seat heating device is turned off; when the seat heating device is turned off, when the NTC sensor corresponds to the temperature value Opening the seat heating device when descending to the corresponding opening point temperature value;
  • closing point temperature value and the opening point temperature value in each of the on-off cycles are calculated by the following formula:
  • T_NTC_HeatTurnOFF(n) T_NTC_HeatTurnON(n-1)+deltaT_NTC_Neg-deltaT(n+1);
  • T_NTC_HeatTurnON(n) T_NTC_HeatTurnOFF(n-1)-deltaT_NTC_Neg;
  • T_NTC_HeatTurnOFF(0) T_NTC_MAX_Lx
  • n is the opening heating or closing heating in the current cycle is the nth time in the approaching segment
  • T_NTC_HeatTurnOFF(n) is the closing point temperature value at the nth closing
  • T_NTC_HeatTurnON(n-1) is the n-1th time
  • the opening point temperature value when opening; T_NTC_HeatTurnON(n) is the opening point temperature value at the nth opening
  • deltaT(n+1) is a predetermined power reduction function;
  • T_NTC_MAX_Lx is the target temperature of the initial temperature rising section corresponding to the gear position;
  • the calculation of the closing point temperature value and the opening point temperature value of the stabilizing section may be pre-calculated and stored, or may be calculated in real time during the heating control process.
  • the step S121 further includes:
  • T_NTC_Control_Lx is the NTC target temperature corresponding to the gear position
  • deltaT_NTC_Neg is a predetermined temperature drop value
  • deltaT_NTC_ApprochToStedy is a predetermined difference judgment threshold
  • step S122 is specifically:
  • the seat heating device When the seat heating is performed, when the temperature value corresponding to the NTC sensor rises to the closing point temperature value of the stable section, the seat heating device is turned off; after the seat heating device is turned off, when the temperature value corresponding to the NTC sensor drops to the stable section Turn on the seat heating device when opening the temperature value;
  • the closed point temperature value and the open point temperature value of the stable section are calculated by the following formula:
  • T_NTC_HeatTurnOFF T_NTC_Control_Lx+deltaT_NTC_Neg/2;
  • T_NTC_HeatTurnON T_NTC_Control_Lx-deltaT_NTC_Neg/2;
  • T_NTC_HeatTurnOFF is the closing point temperature value of the stable section
  • T_NTC_HeatTurnON is the opening point temperature value of the stable section
  • T_NTC_Control_Lx is the NTC target temperature corresponding to the gear position
  • deltaT_NTC_Neg is the predetermined temperature drop value.
  • the calculation of the closing point temperature value and the opening point temperature value of the stable section may be pre-calculated and stored, or may be calculated in real time during the heating control process.
  • the method further includes:
  • the target temperature, the NTC target temperature, the temperature drop value, the difference judgment threshold, and the power up function of the initial temperature rising section corresponding to each heating gear position are pre-calibrated and stored.
  • the car seat heating temperature control device 1 includes:
  • the gear heating period determining unit 10 is configured to determine a current heating period according to a temperature value corresponding to the current NTC sensor when opening or switching to a heating gear position, where the heating period includes an initial heating section and a approaching section. And a stable section;
  • the segmentation control unit 12 is configured to segmentally control the on and off of the seat heating device according to the heating strategy corresponding to each heating period, so that the seat surface temperature reaches and stabilizes at a desired target temperature of the gear position. .
  • the gear position heating period determining unit 10 further includes:
  • the comparing unit 100 is configured to compare a temperature value corresponding to the current NTC sensor with a predetermined temperature threshold
  • the heating period determining unit 101 is configured to determine that the current heating period is a stable period when the comparison result of the comparing unit 10 is that the temperature value corresponding to the current NTC sensor is higher than or equal to the temperature threshold, and vice versa. Then, it is determined that the current heating period is the initial heating period.
  • the segmentation control unit 12 includes:
  • the initial temperature rising section control unit 120 is configured to control the seat heating device to be in a connected state in the heating gear position until the temperature value corresponding to the NTC sensor reaches a target temperature of the initial temperature rising section corresponding to the gear position ;
  • Approaching the segment control unit 121 configured to control the temperature of the NTC sensor by controlling the gap opening and closing of the seat heating device when the current approaching segment is in accordance with the approaching segment control strategy of the gear position The value gradually approaches the NTC target temperature corresponding to the gear position;
  • the stability segment control unit 122 is configured to control the stability of the seat heating device by controlling the intermittent segment control strategy of the gear position when the current position is stable, and the temperature value corresponding to the NTC sensor is in the gear
  • the NTC target temperature corresponding to the bit fluctuates up and down.
  • the approaching segment control unit 121 includes:
  • closing point temperature value and the opening point temperature value in each of the on-off cycles are calculated by the following formula:
  • T_NTC_HeatTurnOFF(n) T_NTC_HeatTurnON(n-1)+deltaT_NTC_Neg-deltaT(n+1);
  • T_NTC_HeatTurnON(n) T_NTC_HeatTurnOFF(n-1)-deltaT_NTC_Neg;
  • T_NTC_HeatTurnOFF(0) T_NTC_MAX_Lx
  • n is the opening heating or closing heating in the current cycle is the nth time in the approaching segment
  • T_NTC_HeatTurnOFF(n) is the closing point temperature value at the nth closing
  • T_NTC_HeatTurnON(n-1) is the n-1th time
  • the opening point temperature value when opening; T_NTC_HeatTurnON(n) is the opening point temperature value at the nth opening
  • deltaT(n+1) is a predetermined power reduction function;
  • T_NTC_MAX_Lx is the target temperature of the initial temperature rising section corresponding to the gear position;
  • the approaching determining unit 1211 is configured to determine that the temperature value corresponding to the NTC sensor approaches the NTC target temperature corresponding to the gear position when the following formula is satisfied:
  • T_NTC_Control_Lx is the NTC target temperature corresponding to the gear position
  • deltaT_NTC_Neg is a predetermined temperature drop value
  • deltaT_NTC_ApprochToStedy is a predetermined difference judgment threshold
  • the stability segment control unit 122 specifically includes:
  • the stable section heating switch control unit 1220 is configured to close the seat heating device when the temperature value corresponding to the NTC sensor rises to the closing point temperature value of the stable section when the seat heating is performed; after the seat heating device is turned off, when When the temperature value corresponding to the NTC sensor drops to the opening point temperature value of the stable section, the seat heating device is turned on;
  • the closed point temperature value and the open point temperature value of the stable section are calculated by the following formula:
  • T_NTC_HeatTurnOFF T_NTC_Control_Lx+deltaT_NTC_Neg/2;
  • T_NTC_HeatTurnON T_NTC_Control_Lx-deltaT_NTC_Neg/2;
  • T_NTC_HeatTurnOFF is the closing point temperature value of the stable section
  • T_NTC_HeatTurnON is the opening point temperature value of the stable section
  • T_NTC_Control_Lx is the NTC target temperature corresponding to the gear position
  • deltaT_NTC_Neg is the predetermined temperature drop value.
  • the car seat heating temperature control device 1 further includes:
  • the calibration storage unit 14 is configured to pre-calibrate the target temperature, the NTC target temperature, the temperature drop value, the temperature threshold, the difference judgment threshold, and the power up function of the initial temperature rising section corresponding to each heating gear position, and store the power.
  • a car seat heating temperature control system including:
  • a temperature sensor disposed in the car seat for detecting the temperature of the surface of the car seat, which may be an NTC sensor in the HVSM module;
  • Control device including the aforementioned car seat heating temperature control device 1;
  • a seat heating device for heating the car seat according to the control of the control device.
  • FIG 7 a plot of NTC temperature and desired seat surface temperature for seat heating in one embodiment using the method provided by the present invention is shown.
  • a very complicated and complete seat heating process is illustrated in the figure, which involves switching of a plurality of gear positions, it being understood that the figure is only
  • the example is not limited, and it is not necessary to include all the steps in the actual application, and only some of the steps may be included.
  • the switching of the gear position is not required.
  • the seat heating device corresponds to three heating gear positions, wherein the third gear is heated most strongly.
  • the seat heating process has undergone the following process:
  • Step 1 Open the seat heating device and set it in the third gear
  • Step 2 After a certain period of time, after the seat temperature is stabilized, the gear position is reduced to the second gear;
  • Step 3 After a certain period of time, after the seat temperature is stable, the gear position is reduced to the first gear;
  • Step 4 After a certain period of time, after the seat temperature is stabilized, the gear position is switched to the third gear again;
  • Step 5 After a certain period of time, after the seat temperature is stable, turn off the seat heating device;
  • Step 6 After a certain period of time, turn on the seat heating device again and switch the gear position to the first gear.
  • the temperature values corresponding to the NTC sensor signals for each step are listed in Figure 7 (see the curve on the right side of Figure 7) and the temperature values measured on the seat surface (see the bottom right side of Figure 7). The curve of that curve). Since the temperature value of the seat surface cannot be measured by the HVSM device, in the method of the present invention, the temperature value T_NTC_Sampled corresponding to the NTC sensor signal is mainly controlled, and the T_NTC_Sampled is controlled by controlling the opening and closing of the seat heating device. The set range is varied to ensure that the seat surface temperature is quickly reached and stabilized at the desired target temperature for each gear.
  • the NTC temperature control curve can be divided into three stages: an initial heating section, a approaching section, and a stable section, and the specific division positions of the three stages are shown in FIG.
  • the initial heating section means that when the heating is turned on from a lower temperature, the seat heating device (such as the heating pad) is always open at this stage, so that the seat quickly reaches the thermal equilibrium state.
  • the NTC temperature reaches or exceeds T_NTC_Max_Lx, it begins to enter the approach segment control.
  • the NTC temperature value needs to be compared with a temperature threshold (T_NTC_Reset). If the current NTC temperature value is lower than the temperature threshold, it is considered that the interior of the seat is not in thermal equilibrium, and needs to be from the initial state.
  • T_NTC_Reset a temperature threshold
  • the temperature rise section begins temperature control until it enters the stabilization section again. In a typical situation, the heating is turned off before entering the stable section. If the NTC temperature value is lower than the temperature threshold when the heating is next turned on, it is necessary to continue to complete the initial heating section and then enter the trend.
  • the near-stage control and the stable section control, the fifth step and the sixth step in Fig. 7 are such a case.
  • the approaching segment means that when the NTC temperature reaches T_NTC_Max_Lx, by controlling the intermittent opening and closing of the seat heating device (such as the heating pad), the output power of the seat heating device is lowered, and the NTC temperature gradually approaches T_NTC_Control_Lx.
  • the control strategy for the approach segment is described in detail below.
  • the stable section means that when the NTC temperature reaches the target control temperature T_NTC_Control_Lx of each gear after reaching the approaching section, the NTC temperature is controlled near T_NTC_Control_Lx, so that the seat surface temperature is always stable.
  • the control strategy for the stabilization section is described in detail below.
  • the NTC temperature profile of the approaching section is shown in Figure 8, wherein the lower pulse line represents the open and closed state of the seat heating device and the upper zigzag line represents the NTC temperature profile in the approaching section.
  • the NTC temperature can be lowered at a certain speed and approach the target temperature.
  • each on-off cycle (in one example, the heating can be turned off - the heating is turned off - the heating is turned off again to an on-off cycle) is: when the heating is turned on and the NTC temperature rises to T_NTC_HeatTurnOFF, the control is disconnected.
  • Chair heating device after the heating is turned off, when the NTC temperature drops to T_NTC_HeatTurnON, the control turns on the seat heating device again; It can be seen from this:
  • T_NTC_HeatTurnOFF(t0) T_NTC_MAX_Lx;
  • T_NTC_HeatTurnON(t1) T_NTC_HeatTurnOFF(t0)-deltaT_NTC_Neg;
  • T_NTC_HeatTurnOFF(t2) T_NTC_HeatTurnON(t1)+deltaT_NTC_Pos;
  • T_NTC_HeatTurnON(t3) T_NTC_HeatTurnOFF(t2)-deltaT_NTC_Neg;
  • T_NTC_HeatTurnOFF and T_NTC_HeatTurnON after t3 are calculated as above.
  • deltaT_NTC_Neg in each on-off cycle is a fixed value (hereinafter referred to as "temperature drop value”).
  • the temperature drop value may take a value of 2 °C.
  • the deltaT_NTC_Pos (hereinafter referred to as “temperature rise value”) gradually increases, and the difference between the two deltaT_NTC_Neg-deltaT_NTC_Pos changes to a power function curve, gradually approaching zero. This makes the NTC temperature drop trend gradually decrease, and finally stabilizes at T_NTC_Control_Lx.
  • the closing point temperature value and the opening point temperature value in each of the on-off cycles can be calculated by the following formula:
  • T_NTC_HeatTurnOFF(n) T_NTC_HeatTurnON(n-1)+deltaT_NTC_Neg-deltaT(n+1);
  • T_NTC_HeatTurnON(n) T_NTC_HeatTurnOFF(n-1)-deltaT_NTC_Neg;
  • T_NTC_HeatTurnOFF(0) T_NTC_MAX_Lx
  • n is the opening heating or closing heating in the current cycle is the nth time in the approaching segment
  • T_NTC_HeatTurnOFF(n) is the closing point temperature value at the nth closing
  • T_NTC_HeatTurnON(n-1) is the n-1th time
  • the opening point temperature value when opening; T_NTC_HeatTurnON(n) is the opening point temperature value at the nth opening
  • deltaT(n+1) is a pre-calibrated power reduction function;
  • T_NTC_MAX_Lx is the target temperature of the initial warming section corresponding to the gear position;
  • deltaT(n) is a function of the difference between the temperature drop value and the temperature rise value.
  • the difference threshold can be set to 0.2 °C.
  • the temperature control curve of the stable section is shown in Fig. 9.
  • the lower pulse line indicates the open and closed state of the seat heating device
  • the upper zigzag line indicates the NTC temperature curve.
  • the NTC temperature is stably fluctuated up and down at the target temperature by opening and closing the seat heating device through the gap.
  • T_NTC_HeatTurnOFF and T_NTC_HeatTurnON in the stable phase fluctuate stably around the NTC target temperature (T_NTC_Control_Lx), so it can be determined according to the following formula:
  • T_NTC_HeatTurnOFF T_NTC_Control_Lx+deltaT_NTC_Stedy;
  • T_NTC_HeatTurnON T_NTC_Control_Lx-deltaT_NTC_stedy.
  • the NTC temperature value of the stable section can be fluctuated within the range of ⁇ 1 ° C of the NTC target temperature.
  • T_NTC_HeatTurnOFF T_NTC_Control_Lx+deltaT_NTC_Neg/2 in the stable segment. Therefore, it is determined whether the NTC temperature is close to the NTC target temperature corresponding to the gear position in the approaching segment, and can be realized by determining whether the NTC temperature satisfies the following formula:
  • T_NTC_HeatTurnOFF-(T_NTC_Control_Lx+deltaT_NTC_Neg/2) ⁇ deltaT_NTC_ApprochTostedy
  • the temperature control strategy of the segmentation is adopted, so that the temperature control intervention timing and the control process are more reasonable, and the seat surface temperature can be made possible. Fast to reach will be stabilized at the expected value; specifically; when the seat heating is first turned on, the current gear position is fully heated, so that the seat surface temperature rises rapidly, when the seat table NTC temperature value reaches the initial target value, The seat heating device is controlled according to the approaching segment control strategy, so that the seat heating device is intermittently turned on and off, and quickly approaches the desired temperature value; then enters the stable section control so that the seat surface temperature is always stabilized near the desired temperature value;
  • the present invention adjusts the control parameters of each heating phase accordingly, thereby avoiding excessive changes in the seat surface temperature
  • the comfort of the seat heating can be improved, and the user feels that the heating is faster and the temperature is more stable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Automation & Control Theory (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Seats For Vehicles (AREA)
  • Control Of Resistance Heating (AREA)

Abstract

一种汽车座椅加热温度控制方法,包括如下步骤:在打开或切换至某加热档位时,根据当前NTC传感器对应的温度值,确定当前所处的加热期间,所述加热期间包括初始升温段、趋近段以及稳定段;根据所述每一加热期间所对应的加热策略,分段控制座椅加热装置的通断,使座椅表面温度达到并稳定在所述档位期望的目标温度上。还包括相应的汽车座椅加热温度控制装置以及汽车座椅加热温度控制系统。此汽车座椅加热温度控制方法可以使座椅表面温度能够迅速达到并稳定在期望温度值,提高了用户的使用体验。

Description

一种汽车座椅加热温度控制方法、装置及系统
本申请要求于2016年12月30日提交中国专利局、申请号为201611261427.2、发明名称为“一种汽车座椅加热温度控制方法、装置及系统”的中国专利申请的优先权,上述专利的全部内容通过引用结合在本申请中。
技术领域
本发明属于车辆座椅加热控制技术领域,特别是涉及一种汽车座椅加热温度控制方法、装置及系统。
背景技术
在一些小汽车座椅中,通常会设置加热/通风座椅模块(Heated/Ventilated Seat Module,HVSM),来实现对座椅的加热控制。
在现有的HVSM模块中,为了提高座椅加热的舒适性,都期望达到如下的控制目标:
a)、座椅表面温度应尽可能快的从环境温度上升到期望的温度值并稳定在该温度值附近,也即希望从座椅加热打开到座椅表面温度稳定在期望值这段时间尽可能短。
b)、座椅表面温度在上升至期望温度值后,应始终在某个设定的波动范围内变化(例如该波动范围一般设定为±1℃),座椅表面温度不应超过期望值,尤其是最高档位时。
现有的技术中,为实现上述目标,一般由座椅加热垫供应商在某个设定的恒定环境温度中(依据整车厂要求,例如通用公司要求是23℃,福特公司要求是30℃),测出座椅表面温度稳定在三个加热档位所要求的温度值时,座椅加热装置(如加热垫)中的NTC(负温度系数)温度传感器对应的阻值。HVSM模块供应商在得到上述对应三个加热档位的NTC阻值后,将其作为其控制算法中的目标值。当座椅打开加热,NTC阻值随着温度上升下降至接 近目标阻值一定距离时,HVSM模块中的控制器开始介入温控,以一定占空比断开/打开座椅加热,并逐渐改变控制电路占空比,使得NTC阻值以缓慢平顺的接近目标阻值。当NTC阻值最终到达目标阻值时,控制器以固定的占空比控制座椅加热的工作,使得座椅表面温度稳定在期望值附近。
但是现有的座椅加热控制器供应商现有控制方法一般能够满足目标b),对于目标a),由于控制器介入温度控制的时间点和温度控制方法的问题,存在如下三种情况:其一、控制器介入温控时间过早,将出现座椅表面温度尚未达到期望值时就因加热功率下降而减缓升温速率,座椅表面温度需要较长时间才能达到期望温度值(例如有些车型需要40分钟才能完成上述过程);其二、控制器介入温控时间过晚,将导致座椅表面温度超过期望值(或称为“过冲”);其三、控制器介入温度控制后到座椅表面温度最终稳定期间,因控制方法不够完善,导致座椅表面温度波动幅度较大,例如超过±1℃。
故现有的汽车座椅加热的温度控制方法,加热效果存在或多或少的不足之处,如加热过慢、或者过热、或者忽冷忽热,影响了用户的使用体验。
发明内容
本发明所要解决的技术问题在于,提供一种汽车座椅加热温度控制方法、装置及系统,可以使汽车座椅表面的温度快速达到期望值,并稳定在所述期望值上。
为了解决上述技术问题,本发明实施例的一方面提供一种汽车座椅加热温度控制方法,包括如下步骤:
在打开或切换至某加热档位时,根据当前NTC传感器对应的温度值,确定当前所处的加热期间,所述加热期间包括初始升温段、趋近段以及稳定段;
根据所述每一加热期间所对应的加热策略,分段控制座椅加热装置的通断,使座椅表面温度达到并稳定在所述档位期望的目标温度上。
其中,所述在打开或切换至某加热档位时,根据当前NTC传感器对应的温度值,确定当前所处的加热期间的步骤进一步包括:
将当前NTC传感器对应的温度值与一预定的温度阀值进行比较;
当比较结果为当前NTC传感器对应的温度值高于或等于所述温度阀值时,则确定当前所处的加热期间为稳定期,反之,则确定当前所处的加热期间为初始升温段。
其中,所述根据所述每一加热期间所对应的加热策略,控制座椅加热装置的通断,使座椅表面温度达到并稳定在所述档位期望的目标温度上的步骤具体包括:
如果当前所处的加热期间为初始升温段,则控制所述座椅加热装置在所述加热档位上一直处于连通状态,直至所述NTC传感器对应的温度值达到该档位所对应的初始升温段的目标温度,则流程转至趋近段控制;
在趋近段控制流程中,按所述档位的趋近段控制策略,通过控制所述座椅加热装置间隙性通断,使所述NTC传感器对应的温度值逐渐趋近于该档位所对应的NTC目标温度,在达到预定条件后,流程转至稳定段控制;
在稳定段控制流程中,按所述档位的稳定段控制策略,通过控制所述座椅加热装置间隙性通断,使所述NTC传感器对应的温度值在该档位所对应的NTC目标温度上下波动。
其中,所述根据所述每一加热期间所对应的加热策略,控制座椅加热装置的通断,使座椅表面温度达到并稳定在所述档位期望的目标温度上的步骤具体包括:
如果当前所处的加热期间为稳定段,则按所述档位的稳定段控制策略,通过控制所述座椅加热装置间隙性通断,使所述NTC传感器对应的温度值在该档位所对应的NTC目标温度上下波动。
其中,在趋近段控制流程中,按所述档位的趋近段控制策略,通过控制所述座椅加热装置间隙性通断的步骤具体为:
在进行座椅加热时,当NTC传感器对应的温度值上升至每一通断循环中对应的关闭点温度值时,关闭座椅加热装置;在关闭座椅加热装置后,当NTC传感器对应的温度值下降至对应的打开点温度值时,打开座椅加热装置。
其中,所述每一通断循环中的关闭点温度值与打开点温度值通过下述的公式计算获得:
T_NTC_HeatTurnOFF(n)=T_NTC_HeatTurnON(n-1)+deltaT_NTC_Neg-deltaT(n+1);
T_NTC_HeatTurnON(n)=T_NTC_HeatTurnOFF(n-1)-deltaT_NTC_Neg;
T_NTC_HeatTurnOFF(0)=T_NTC_MAX_Lx;
其中,n是当前循环中的打开加热或关闭加热是趋近段中第n次,T_NTC_HeatTurnOFF(n)为第n次关闭时的关闭点温度值,T_NTC_HeatTurnON(n-1)为第n-1次打开时的打开点温度值;T_NTC_HeatTurnON(n)为第n次打开时的打开点温度值,T_NTC_HeatTurnOFF(n-1)为第n-1次关闭时的关闭点温度值,deltaT_NTC_Neg为预定的温降值,deltaT(n+1)为预定的降幂函数;T_NTC_MAX_Lx为该档位所对应的初始升温段的目标温度。
其中,在趋近段控制流程中,按所述档位的趋近段控制策略,通过控制所述座椅加热装置间隙性通断,使所述NTC传感器对应的温度值逐渐趋近于该档位所对应的NTC目标温度,在达到预定条件后,流程转至稳定段控制的步骤进一步包括:
在满足下述公式时,确定NTC传感器对应的温度值趋近于该档位所对应的NTC目标温度,并使流程转至稳定段控制:
T_NTC_HeatTurnOFF-(T_NTC_Control_Lx+deltaT_NTC_Neg/2)<=deltaT_NTC_ApprochToStedy
其中,T_NTC_Control_Lx为该档位所对应的NTC目标温度,deltaT_NTC_Neg预定的温降值,deltaT_NTC_ApprochToStedy为一预定的差值判断阀值。
其中,在稳定段控制流程中,按所述档位的稳定段控制策略,通过控制所述座椅加热装置间隙性通断的步骤具体为:
在进行座椅加热时,当NTC传感器对应的温度值上升至稳定段的关闭点温度值时,关闭座椅加热装置;在关闭座椅加热装置后,当NTC传感器对应的温度值下降至稳定段的打开点温度值时,打开座椅加热装置;
其中,稳定段的关闭点温度值与打开点温度值通过下面的公式计算获得:
T_NTC_HeatTurnOFF=T_NTC_Control_Lx+deltaT_NTC_Neg/2;
T_NTC_HeatTurnON=T_NTC_Control_Lx-deltaT_NTC_Neg/2;
其中,T_NTC_HeatTurnOFF为稳定段的关闭点温度值,T_NTC_HeatTurnON为稳定段的打开点温度值,T_NTC_Control_Lx为该档位所对应的NTC目标温度,deltaT_NTC_Neg为预定的温降值。
其中,进一步包括:
预先标定每一加热档位所对应的所述初始升温段的目标温度、NTC目标温度、温降值、差值判断阀值、升幂函数并存储。
相应地,本发明实施例的另一方面,还提供一种汽车座椅加热温度控制装置,包括:
档位加热期间判断单元,用于在打开或切换至某加热档位时,根据当前NTC传感器对应的温度值,确定当前所处的加热期间,所述加热期间包括初始升温段、趋近段以及稳定段;
分段控制单元,用于根据所述每一加热期间所对应的加热策略,分段控制座椅加热装置的通断,使座椅表面温度达到并稳定在所述档位期望的目标温度上。
其中,所述档位加热期间判断单元进一步包括:
比较单元,用于将当前NTC传感器对应的温度值与一预定的温度阀值进行比较;
加热期间确定单元,用于在所述比较单元的比较结果为当前NTC传感器对应的温度值高于或等于所述温度阀值时,则确定当前所处的加热期间为稳定期,反之,则确定当前所处的加热期间为初始升温段。
其中,所述分段控制单元包括:
初始升温段控制单元,用于控制所述座椅加热装置在所述加热档位上一直处于连通状态,直至所述NTC传感器对应的温度值达到该档位所对应的初始升温段的目标温度;
趋近段控制单元,用于在当前处于趋近段时,按所述档位的趋近段控制策略,通过控制所述座椅加热装置间隙性通断,使所述NTC传感器对应的温度值逐渐趋近于该档位所对应的NTC目标温度;
稳定段控制单元,用于当前处于稳定估时,按所述档位的稳定段控制策略,通过控制所述座椅加热装置间隙性通断,使所述NTC传感器对应的温 度值在该档位所对应的NTC目标温度上下波动。
其中,所述趋近段控制单元包括:
趋近段加热开关控制单元,用于在进行座椅加热时,当NTC传感器对应的温度值上升至每一通断循环中对应的关闭点温度值时,关闭座椅加热装置;在关闭座椅加热装置后,当NTC传感器对应的温度值下降至对应的打开点温度值时,打开座椅加热装置。
其中,所述每一通断循环中的关闭点温度值与打开点温度值通过下述的公式计算获得:
T_NTC_HeatTurnOFF(n)=T_NTC_HeatTurnON(n-1)+deltaT_NTC_Neg-deltaT(n+1);
T_NTC_HeatTurnON(n)=T_NTC_HeatTurnOFF(n-1)-deltaT_NTC_Neg;
T_NTC_HeatTurnOFF(0)=T_NTC_MAX_Lx;
其中,n是当前循环中的打开加热或关闭加热是趋近段中第n次,T_NTC_HeatTurnOFF(n)为第n次关闭时的关闭点温度值,T_NTC_HeatTurnON(n-1)为第n-1次打开时的打开点温度值;T_NTC_HeatTurnON(n)为第n次打开时的打开点温度值,T_NTC_HeatTurnOFF(n-1)为第n-1次关闭时的关闭点温度值,deltaT_NTC_Neg为预定的温降值,deltaT(n+1)为预定的降幂函数;T_NTC_MAX_Lx为该档位所对应的初始升温段的目标温度。
其中,所述趋近段控制单元进一步包括:
趋近判断单元,用于在满足下述公式时,确定NTC传感器对应的温度值趋近于该档位所对应的NTC目标温度:
T_NTC_HeatTurnOFF-(T_NTC_Control_Lx+deltaT_NTC_Neg/2)<=deltaT_NTC_ApprochToStedy
其中,T_NTC_Control_Lx为该档位所对应的NTC目标温度,deltaT_NTC_Neg预定的温降值,deltaT_NTC_ApprochToStedy为一预定的差值判断阀值。
其中,稳定段控制单元具体包括:
稳定段加热开关控制单元,用于在进行座椅加热时,当NTC传感器对应的温度值上升至稳定段的关闭点温度值时,关闭座椅加热装置;在关闭座椅加热装置后,当NTC传感器对应的温度值下降至稳定段的打开点温度值 时,打开座椅加热装置。
其中,稳定段的关闭点温度值与打开点温度值通过下面的公式计算获得:
T_NTC_HeatTurnOFF=T_NTC_Control_Lx+deltaT_NTC_Neg/2;
T_NTC_HeatTurnON=T_NTC_Control_Lx-deltaT_NTC_Neg/2;
其中,T_NTC_HeatTurnOFF为稳定段的关闭点温度值,T_NTC_HeatTurnON为稳定段的打开点温度值,T_NTC_Control_Lx为该档位所对应的NTC目标温度,deltaT_NTC_Neg为预定的温降值。
其中,进一步包括:
标定存储单元,用于预先标定每一加热档位所对应的所述初始升温段的目标温度、NTC目标温度、温降值、温度阈值、差值判断阀值、升幂函数,并存储。
相应地,本发明实施例的另一方面,还提供一种汽车座椅加热温度控制系统,包括:
温度传感器,设置于汽车座椅中,用于检测汽车座椅表面的温度;
控制装置,包括前述的汽车座椅加热温度控制装置;
座椅加热装置,用于根据所述分段控制装置的控制,对汽车座椅进行加热。
实施本发明实施例,具有如下的有益效果:
首先,在本发明提供的汽车座椅加热温度控制方法及装置中,在座椅加热时,采用分段时温度控制策略,让温度控制介入时机及控制过程更加合理,可以让座椅表面温度能快速到达到将稳定在期望值上;具体地;当初次打开座椅加热时,采用当前档位全功率加热,使座椅表面温度迅速上升,当座椅表NTC温度值达到初始目标值时,对座椅加热装置按照趋近段控制策略进行控制,使座椅加热装置间隙性通断,快速趋近期望的温度值;然后进入稳定段控制,使座椅表面温度始终稳定在期望温度值附近;
其次,在进行加热档位切换后,本发明会相应调整每一加热阶段的控制参数,避免了座椅表面温度的变化过大;
实施本发明的实施例,可以提高座椅加热的舒适性,让用户感觉加热更 快、温度更稳定。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1是本发明提供的一种汽车座椅加热温度控制方法的主流程示意图;
图2示出了图1中步骤S10的更详细的流程示意图;
图3示出了图1中步骤S12的更详细的流程示意图;
图4示出了本发明提供的一种汽车座椅加热温度控制装置的结构示意图;
图5示出了图4中趋近段控制单元的一个实施例的结构示意图;
图6示出了图4中稳定段控制单元的一个实施例的结构示意图;
图7示出了本发明一种汽车座椅加热温度控制方法的一个应用实例温度变化曲线图;
图8示出了图7中趋近段控制原理示意图;
图9示出了图7中稳定段控制原理示意图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
下面对本发明做进一步详细描述。如图1所示,示出了本发明提供的一种汽车座椅加热温度控制方法的主流程示意图,在该实施例中,该方法包括如下的步骤:
步骤S10,在打开或切换至某加热档位时,根据当前NTC传感器对应的温度值,确定当前所处的加热期间,所述加热期间包括初始升温段、趋近 段以及稳定段;
步骤S12,根据所述每一加热期间所对应的加热策略,分段控制座椅加热装置的通断,使座椅表面温度达到并稳定在所述档位期望的目标温度上。
一并结合图2以及图3所示,其中,步骤S10进一步包括:
步骤S100,将当前NTC传感器对应的温度值与一预定的温度阀值进行比较;
步骤S102,当比较结果为当前NTC传感器对应的温度值高于或等于所述温度阀值时,则确定当前所处的加热期间为稳定期,反之,则确定当前所处的加热期间为初始升温段。
其中,步骤S12具体包括:
如果当前所处的加热期间为初始升温段,则在步骤S120,控制所述座椅加热装置在所述加热档位上一直处于连通状态,直至所述NTC传感器对应的温度值达到该档位所对应的初始升温段的目标温度,则流程转至趋近段控制;
步骤S121,在趋近段控制流程中,按所述档位的趋近段控制策略,通过控制所述座椅加热装置间隙性通断,使所述NTC传感器对应的温度值逐渐趋近于该档位所对应的NTC目标温度,在达到预定条件后,流程转至稳定段控制;
步骤S122,在稳定段控制流程中,按所述档位的稳定段控制策略,通过控制所述座椅加热装置间隙性通断,使所述NTC传感器对应的温度值在该档位所对应的NTC目标温度上下波动。
其中,如果在步骤S10中判断到当前所处的加热期间为稳定段,则在步骤S12中,只包含步骤S122,即当前所处的加热期间为稳定段,则按所述档位的稳定段控制策略,通过控制所述座椅加热装置间隙性通断,使所述NTC传感器对应的温度值在该档位所对应的NTC目标温度上下波动。
进一步的,在本发明的一个实施例中,该步骤S121包括:
在进行座椅加热时,当NTC传感器对应的温度值上升至每一通断循环中对应的关闭点温度值时,关闭座椅加热装置;在关闭座椅加热装置后,当NTC传感器对应的温度值下降至对应的打开点温度值时,打开座椅加热 装置;
其中,所述每一通断循环中的关闭点温度值与打开点温度值通过下述的公式计算获得:
T_NTC_HeatTurnOFF(n)=T_NTC_HeatTurnON(n-1)+deltaT_NTC_Neg-deltaT(n+1);
T_NTC_HeatTurnON(n)=T_NTC_HeatTurnOFF(n-1)-deltaT_NTC_Neg;
T_NTC_HeatTurnOFF(0)=T_NTC_MAX_Lx;
其中,n是当前循环中的打开加热或关闭加热是趋近段中第n次,T_NTC_HeatTurnOFF(n)为第n次关闭时的关闭点温度值,T_NTC_HeatTurnON(n-1)为第n-1次打开时的打开点温度值;T_NTC_HeatTurnON(n)为第n次打开时的打开点温度值,T_NTC_HeatTurnOFF(n-1)为第n-1次关闭时的关闭点温度值,deltaT_NTC_Neg为预定的温降值,deltaT(n+1)为预定的降幂函数;T_NTC_MAX_Lx为该档位所对应的初始升温段的目标温度;
可以理解的是,趋稳段的关闭点温度值与打开点温度值的计算可以是预先计算并存储,也可以是在加热控制过程中实时进行计算。
该步骤S121进一步包括:
在满足下述公式时,确定NTC传感器对应的温度值趋近于该档位所对应的NTC目标温度,并使流程转至稳定段控制:
T_NTC_HeatTurnOFF-(T_NTC_Control_Lx+deltaT_NTC_Neg/2)<=deltaT_NTC_ApprochToStedy
其中,T_NTC_Control_Lx为该档位所对应的NTC目标温度,deltaT_NTC_Neg预定的温降值,deltaT_NTC_ApprochToStedy为一预定的差值判断阀值。
进一步的,在本发明的一个实施例中,该步骤S122具体为:
在进行座椅加热时,当NTC传感器对应的温度值上升至稳定段的关闭点温度值时,关闭座椅加热装置;在关闭座椅加热装置后,当NTC传感器对应的温度值下降至稳定段的打开点温度值时,打开座椅加热装置;
其中,稳定段的关闭点温度值与打开点温度值通过下面的公式计算获得:
T_NTC_HeatTurnOFF=T_NTC_Control_Lx+deltaT_NTC_Neg/2;
T_NTC_HeatTurnON=T_NTC_Control_Lx-deltaT_NTC_Neg/2;
其中,T_NTC_HeatTurnOFF为稳定段的关闭点温度值,T_NTC_HeatTurnON为稳定段的打开点温度值,T_NTC_Control_Lx为该档位所对应的NTC目标温度,deltaT_NTC_Neg为预定的温降值。
可以理解的是,稳定段的关闭点温度值与打开点温度值的计算可以是预先计算并存储,也可以是在加热控制过程中实时进行计算。
可以理解的是,该方法进一步包括:
预先标定每一加热档位所对应的所述初始升温段的目标温度、NTC目标温度、温降值、差值判断阀值、升幂函数并存储。
如图3至图6所示,示出了本发明提供的一种汽车座椅加热温度控制装置,在该实施例中,该汽车座椅加热温度控制装置1包括:
档位加热期间判断单元10,用于在打开或切换至某加热档位时,根据当前NTC传感器对应的温度值,确定当前所处的加热期间,所述加热期间包括初始升温段、趋近段以及稳定段;
分段控制单元12,用于根据所述每一加热期间所对应的加热策略,分段控制座椅加热装置的通断,使座椅表面温度达到并稳定在所述档位期望的目标温度上。
其中,所述档位加热期间判断单元10进一步包括:
比较单元100,用于将当前NTC传感器对应的温度值与一预定的温度阀值进行比较;
加热期间确定单元101,用于在所述比较单元10的比较结果为当前NTC传感器对应的温度值高于或等于所述温度阀值时,则确定当前所处的加热期间为稳定期,反之,则确定当前所处的加热期间为初始升温段。
其中,所述分段控制单元12包括:
初始升温段控制单元120,用于控制所述座椅加热装置在所述加热档位上一直处于连通状态,直至所述NTC传感器对应的温度值达到该档位所对应的初始升温段的目标温度;
趋近段控制单元121,用于在当前处于趋近段时,按所述档位的趋近段控制策略,通过控制所述座椅加热装置间隙性通断,使所述NTC传感器对 应的温度值逐渐趋近于该档位所对应的NTC目标温度;
稳定段控制单元122,用于当前处于稳定估时,按所述档位的稳定段控制策略,通过控制所述座椅加热装置间隙性通断,使所述NTC传感器对应的温度值在该档位所对应的NTC目标温度上下波动。
其中,所述趋近段控制单元121包括:
趋近段加热开关控制单元1210,用于在进行座椅加热时,当NTC传感器对应的温度值上升至每一通断循环中对应的关闭点温度值时,关闭座椅加热装置;在关闭座椅加热装置后,当NTC传感器对应的温度值下降至对应的打开点温度值时,打开座椅加热装置;
其中,所述每一通断循环中的关闭点温度值与打开点温度值通过下述的公式计算获得:
T_NTC_HeatTurnOFF(n)=T_NTC_HeatTurnON(n-1)+deltaT_NTC_Neg-deltaT(n+1);
T_NTC_HeatTurnON(n)=T_NTC_HeatTurnOFF(n-1)-deltaT_NTC_Neg;
T_NTC_HeatTurnOFF(0)=T_NTC_MAX_Lx;
其中,n是当前循环中的打开加热或关闭加热是趋近段中第n次,T_NTC_HeatTurnOFF(n)为第n次关闭时的关闭点温度值,T_NTC_HeatTurnON(n-1)为第n-1次打开时的打开点温度值;T_NTC_HeatTurnON(n)为第n次打开时的打开点温度值,T_NTC_HeatTurnOFF(n-1)为第n-1次关闭时的关闭点温度值,deltaT_NTC_Neg为预定的温降值,deltaT(n+1)为预定的降幂函数;T_NTC_MAX_Lx为该档位所对应的初始升温段的目标温度;
趋近判断单元1211,用于在满足下述公式时,确定NTC传感器对应的温度值趋近于该档位所对应的NTC目标温度:
T_NTC_HeatTurnOFF-(T_NTC_Control_Lx+deltaT_NTC_Neg/2)<=deltaT_NTC_ApprochToStedy
其中,T_NTC_Control_Lx为该档位所对应的NTC目标温度,deltaT_NTC_Neg预定的温降值,deltaT_NTC_ApprochToStedy为一预定的差值判断阀值。
其中,稳定段控制单元122具体包括:
稳定段加热开关控制单元1220,用于在进行座椅加热时,当NTC传感 器对应的温度值上升至稳定段的关闭点温度值时,关闭座椅加热装置;在关闭座椅加热装置后,当NTC传感器对应的温度值下降至稳定段的打开点温度值时,打开座椅加热装置;
其中,稳定段的关闭点温度值与打开点温度值通过下面的公式计算获得:
T_NTC_HeatTurnOFF=T_NTC_Control_Lx+deltaT_NTC_Neg/2;
T_NTC_HeatTurnON=T_NTC_Control_Lx-deltaT_NTC_Neg/2;
其中,T_NTC_HeatTurnOFF为稳定段的关闭点温度值,T_NTC_HeatTurnON为稳定段的打开点温度值,T_NTC_Control_Lx为该档位所对应的NTC目标温度,deltaT_NTC_Neg为预定的温降值。
其中,所述汽车座椅加热温度控制装置1进一步包括:
标定存储单元14,用于预先标定每一加热档位所对应的所述初始升温段的目标温度、NTC目标温度、温降值、温度阈值、差值判断阀值、升幂函数,并存储。
相应地,本发明实施例的另一方面,还提供一种汽车座椅加热温度控制系统,包括:
温度传感器,设置于汽车座椅中,用于检测汽车座椅表面的温度,其可以是HVSM模块中的NTC传感器;
控制装置,包括前述的汽车座椅加热温度控制装置1;
座椅加热装置,用于根据所述控制装置的控制,对汽车座椅进行加热。
更多的细节,可参考前述对图4至图6的描述,在此不进行详述。
为了更好地理解本发明的实施例,下述将结合具体的例子对本发明进行描述。
为了更好地理解本发明的实施例,下述将结合具体的例子对本发明进行描述。
如图7所示,示出了采用本发明提供的方法一个实施例中的进行座椅加热的NTC温度及期望的座椅表面温度曲线图。为了便于理解本发明涉及的座椅加热的所有过程,在该图中示出一个非常复杂且完整的座椅加热过程,其中涉及到多个档位的切换,可以理解的是,该图仅为举例非为限制,在实 际应用中不必包括其中的所有步骤,可以仅包括其中的部分步骤,例如在一些应用实例中,无需进行档位的切换。
具体地,在图7中,该座椅加热装置对应有三个加热档位,其中第3档加热最强劲。按照时间轴,该座椅加热过程经历了如下的过程:
步骤一:打开座椅加热装置,并设定在第3档;
步骤二:经过一定时间,在座椅温度稳定后,将档位降为第2档;
步骤三:经过一定时间,在座椅温度稳定后,将档位降为第1档;
步骤四:经过一定时间,在座椅温度稳定后,再次将档位切换至第3档;
步骤五:经过一定时间,在座椅温度稳定后,关掉座椅加热装置;
步骤六:经过一定时间后,再次打开座椅加热装置,将档位切换至第1档。
在图7中列出了每一步骤所对应的NTC传感器信号对应的温度值(见图7中右侧上面那条曲线),以及座椅表面测量到的温度值(见图7中右侧下面那条曲线)的变化曲线。由于座椅表面的温度值没办法通过HVSM装置进行测量,故在本发明的方法中,主要是对NTC传感器信号对应的温度值T_NTC_Sampled进行控制,通过控制座椅加热装置的打开和关闭让T_NTC_Sampled在设定的范围内变化,从而保证座椅表面温度迅速达到并稳定在各档位期望的目标温度上。
下表中,列出了图7中所涉及各参数的定义如下:
Figure PCTCN2017119933-appb-000001
从图7中可以看出,NTC温度控制曲线可分为三个阶段:初始升温段、 趋近段、稳定段,图7中示出了这三个阶段的具体划分位置。
初始升温段是指从较低的温度打开加热时,这个阶段座椅加热装置(如加热垫)处于一直打开状态,使得座椅快速达到热平衡状态。当NTC温度达到或超过T_NTC_Max_Lx后,开始进入趋近段控制。
可以理解的是,在打开加热时需要将NTC温度值与一个温度阀值(T_NTC_Reset)进行比较,如果当前NTC温度值低于该温度阀值,则认为座椅内部已经不在热平衡状态,需要从初始升温段开始进行温度控制,直到再次进入稳定段。在一个典型的情形下,在进入稳定段之前加热被关闭,则在下次打开加热时,如果判断到此时的NTC温度值低于该温度阀值,则需要继续完成初始升温段,然后进入趋近段控制以及稳定段控制,图7中的第五步以及第六步就是这样一种情形。
趋近段是指当NTC温度到达T_NTC_Max_Lx后,通过控制座椅加热装置(如加热垫)间隙性的通断,降低座椅加热装置的输出功率,使NTC温度逐渐趋近T_NTC_Control_Lx。趋近段的控制策略在下文中会进行详细说明。
稳定段是指当NTC温度经过趋近段到达各档位目标控制温度T_NTC_Control_Lx后,将NTC温度控制在T_NTC_Control_Lx附近,从而使得座椅表面温度一直保持稳定。稳定段的控制策略在下文中会进行详细说明。
可以理解的是,在加热过程中,如果加热档位发生变化,那么相应的控制参数随之发生变化,但温度控制逻辑不变。
下述将结合例子,具体地描述趋近段以及稳定段的温度控制策略及过程
(一)趋近段的温度控制策略
趋近段的NTC温度曲线如图8所示,其中,下面的脉冲线表示座椅加热装置的打开和关闭状态,上面的锯齿线表示趋近段中的NTC温度曲线。通过间隙的打开和关闭座椅加热装置,可以使NTC温度按照一定的速度下降并趋近目标温度。
具体地,每一个通断循环(在一个例子中,可以将关闭加热-打开加热-再次关闭加热为一个通断循环)的控制逻辑是:加热打开并且NTC温度上 升至T_NTC_HeatTurnOFF时,控制断开座椅加热装置;在断开加热后,当NTC温度下降至T_NTC_HeatTurnON时,控制再次打开座椅加热装置;如此循环。从中可以看出:
t0时刻:T_NTC_HeatTurnOFF(t0)=T_NTC_MAX_Lx;
t1时刻:T_NTC_HeatTurnON(t1)=T_NTC_HeatTurnOFF(t0)-deltaT_NTC_Neg;
t2时刻:T_NTC_HeatTurnOFF(t2)=T_NTC_HeatTurnON(t1)+deltaT_NTC_Pos;
t3时刻:T_NTC_HeatTurnON(t3)=T_NTC_HeatTurnOFF(t2)-deltaT_NTC_Neg;
t3时刻以后的T_NTC_HeatTurnOFF和T_NTC_HeatTurnON值计算同上。
再要说明的是,在本发明的实施例中,每一个通断循环中的deltaT_NTC_Neg是一个定值(下称“温降值”),在一例子中,该温降值可以取值为2℃。而deltaT_NTC_Pos(下称“温升值”)则逐渐增加,两者的差值deltaT_NTC_Neg-deltaT_NTC_Pos的变化近似于一个幂函数曲线,逐渐趋近零。这样使得NTC温度下降趋势逐渐减小,最终稳定在T_NTC_Control_Lx。
经过归纳,所述每一通断循环中的关闭点温度值与打开点温度值可以通过下述的公式计算获得:
T_NTC_HeatTurnOFF(n)=T_NTC_HeatTurnON(n-1)+deltaT_NTC_Neg-deltaT(n+1);
T_NTC_HeatTurnON(n)=T_NTC_HeatTurnOFF(n-1)-deltaT_NTC_Neg;
T_NTC_HeatTurnOFF(0)=T_NTC_MAX_Lx;
其中,n是当前循环中的打开加热或关闭加热是趋近段中第n次,T_NTC_HeatTurnOFF(n)为第n次关闭时的关闭点温度值,T_NTC_HeatTurnON(n-1)为第n-1次打开时的打开点温度值;T_NTC_HeatTurnON(n)为第n次打开时的打开点温度值,T_NTC_HeatTurnOFF(n-1)为第n-1次关闭时的关闭点温度值,deltaT_NTC_Neg为预定的温降值,deltaT(n+1)为预标定的降幂函数;T_NTC_MAX_Lx为该档位所对应的初始升温段的目标温度;
可以理解的是,其中,deltaT(n)即为温降值与温升值之间的差值函数。为了达到趋近段的理想的控制效果,对于汽车的各加热档位,其对应的实际的deltaT(n)函数可以通过标定试验进行确定,例如在一个例子中,某档位 对应的deltaT(n)=2.0604n -0.602
当趋近段的T_NTC_HeatTurnOFF下降至与稳定段的T_NTC_HeatTurnOFF值相差等于或小于一个差值阀值(deltaT_NTC_ApprochToStedy)时,表明此时的NTC温度已经趋近于NTC目标温度了,应从趋近段控制切换至稳定段控制。在一个实例中,该差值阀值可以设置为0.2℃。
(二)稳定段的温度控制策略
稳定段的温度控制曲线如图9所示。其中,下面的脉冲线表示座椅加热装置的打开和关闭状态,上面的锯齿线表示NTC温度曲线。在该稳定段,通过间隙的打开和关闭座椅加热装置,使得NTC温度稳定地在目标温度上下波动。
从中可以看出,其中稳定阶段的T_NTC_HeatTurnOFF和T_NTC_HeatTurnON稳定地在NTC目标温度(T_NTC_Control_Lx)上下波动,故可以根据以下公式确定:
T_NTC_HeatTurnOFF=T_NTC_Control_Lx+deltaT_NTC_Stedy;
T_NTC_HeatTurnON=T_NTC_Control_Lx-deltaT_NTC_stedy。
可以理解的是,无论是在趋近段还是稳定段,NTC温度的温降值deltaT_NTC_Neg都是一个固定值,因此:deltaT_NTC_Stedy=deltaT_NTC_Neg/2;
当将该deltaT_NTC_Neg设置为2℃时,则可以使稳定段的NTC温度值在NTC目标温度±1℃范围内波动。
可以理解的是,稳定段中T_NTC_HeatTurnOFF=T_NTC_Control_Lx+deltaT_NTC_Neg/2。故在趋近段中判断NTC温度是否趋近于该档位所对应的NTC目标温度,可以通过判断NTC温度是否满足下述公式来实现:
T_NTC_HeatTurnOFF-(T_NTC_Control_Lx+deltaT_NTC_Neg/2)<=deltaT_NTC_ApprochTostedy
如果上述公式成立,则表明趋近段的NTC温度已经趋近于NTC目标温度了。
实施本发明,具有如下有益效果:
首先,在本发明提供的汽车座椅加热温度控制方法及装置中,在座椅加热时,采用分段时温度控制策略,让温度控制介入时机及控制过程更加合理, 可以让座椅表面温度能快速到达到将稳定在期望值上;具体地;当初次打开座椅加热时,采用当前档位全功率加热,使座椅表面温度迅速上升,当座椅表NTC温度值达到初始目标值时,对座椅加热装置按照趋近段控制策略进行控制,使座椅加热装置间隙性通断,快速趋近期望的温度值;然后进入稳定段控制,使座椅表面温度始终稳定在期望温度值附近;
其次,在进行加热档位切换后,本发明会相应调整每一加热阶段的控制参数,避免了座椅表面温度的变化过大;
实施本发明的实施例,可以提高座椅加热的舒适性,让用户感觉加热更快、温度更稳定。
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明,不能认定本发明的具体实施只局限于这些说明。对于本发明所属技术领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干简单推演或替换,都应当视为属于本发明的保护范围。

Claims (22)

  1. 一种汽车座椅加热温度控制方法,其中,包括如下步骤:
    在打开或切换至某加热档位时,根据当前NTC传感器对应的温度值,确定当前所处的加热期间,所述加热期间包括初始升温段、趋近段以及稳定段;
    根据所述每一加热期间所对应的加热策略,分段控制座椅加热装置的通断,使座椅表面温度达到并稳定在所述档位期望的目标温度上。
  2. 如权利要求1所述的一种汽车座椅加热温度控制方法,其中,所述在打开或切换至某加热档位时,根据当前NTC传感器对应的温度值,确定当前所处的加热期间的步骤进一步包括:
    将当前NTC传感器对应的温度值与一预定的温度阀值进行比较;
    当比较结果为当前NTC传感器对应的温度值高于或等于所述温度阀值时,则确定当前所处的加热期间为稳定期,反之,则确定当前所处的加热期间为初始升温段。
  3. 如权利要求2所述的一种汽车座椅加热温度控制方法,其中,所述根据所述每一加热期间所对应的加热策略,控制座椅加热装置的通断,使座椅表面温度达到并稳定在所述档位期望的目标温度上的步骤具体包括:
    如果当前所处的加热期间为初始升温段,则控制所述座椅加热装置在所述加热档位上一直处于连通状态,直至所述NTC传感器对应的温度值达到该档位所对应的初始升温段的目标温度,则流程转至趋近段控制;
    在趋近段控制流程中,按所述档位的趋近段控制策略,通过控制所述座椅加热装置间隙性通断,使所述NTC传感器对应的温度值逐渐趋近于该档位所对应的NTC目标温度,在达到预定条件后,流程转至稳定段控制;
    在稳定段控制流程中,按所述档位的稳定段控制策略,通过控制所述座椅加热装置间隙性通断,使所述NTC传感器对应的温度值在该档位所对应的NTC目标温度上下波动。
  4. 如权利要求2所述的一种汽车座椅加热温度控制方法,其中,所述根据所述每一加热期间所对应的加热策略,控制座椅加热装置的通断,使座椅表面温度达到并稳定在所述档位期望的目标温度上的步骤具体包括:
    如果当前所处的加热期间为稳定段,则按所述档位的稳定段控制策略,通过控制所述座椅加热装置间隙性通断,使所述NTC传感器对应的温度值在该档位所对应的NTC目标温度上下波动。
  5. 如权利要求3所述的一种汽车座椅加热温度控制方法,其中,在趋近段控制流程中,按所述档位的趋近段控制策略,通过控制所述座椅加热装置间隙性通断的步骤具体为:
    在进行座椅加热时,当NTC传感器对应的温度值上升至每一通断循环中对应的关闭点温度值时,关闭座椅加热装置;在关闭座椅加热装置后,当NTC传感器对应的温度值下降至对应的打开点温度值时,打开座椅加热装置;
    其中,所述每一通断循环中的关闭点温度值与打开点温度值通过下述的公式计算获得:
    T_NTC_HeatTurnOFF(n)=T_NTC_HeatTurnON(n-1)+deltaT_NTC_Neg-deltaT(n+1);
    T_NTC_HeatTurnON(n)=T_NTC_HeatTurnOFF(n-1)-deltaT_NTC_Neg;
    T_NTC_HeatTurnOFF(0)=T_NTC_MAX_Lx;
    其中,n为当前循环中的打开加热或关闭加热是趋近段中第n次,T_NTC_HeatTurnOFF(n)为第n次关闭时的关闭点温度值,T_NTC_HeatTurnON(n-1)为第n-1次打开时的打开点温度值;T_NTC_HeatTurnON(n)为第n次打开时的打开点温度值,T_NTC_HeatTurnOFF(n-1)为第n-1次关闭时的关闭点温度值,deltaT_NTC_Neg为预定的温降值,deltaT(n+1)为预定的降幂函数;T_NTC_MAX_Lx为该档位所对应的初始升温段的目标温度。
  6. 如权利要求5所述的一种汽车座椅加热温度控制方法,其中,在趋近段控制流程中,按所述档位的趋近段控制策略,通过控制所述座椅加热装 置间隙性通断,使所述NTC传感器对应的温度值逐渐趋近于该档位所对应的NTC目标温度,在达到预定条件后,流程转至稳定段控制的步骤进一步包括:
    在满足下述公式时,确定NTC传感器对应的温度值趋近于该档位所对应的NTC目标温度,并使流程转至稳定段控制:
    T_NTC_HeatTurnOFF-(T_NTC_Control_Lx+deltaT_NTC_Neg/2)<=deltaT_NTC_ApprochToStedy
    其中,T_NTC_Control_Lx为该档位所对应的NTC目标温度,deltaT_NTC_Neg预定的温降值,deltaT_NTC_ApprochToStedy为一预定的差值判断阀值。
  7. 如权利要求6所述的一种汽车座椅加热温度控制方法,其中,在稳定段控制流程中,按所述档位的稳定段控制策略,通过控制所述座椅加热装置间隙性通断的步骤具体为:
    在进行座椅加热时,当NTC传感器对应的温度值上升至稳定段的关闭点温度值时,关闭座椅加热装置;在关闭座椅加热装置后,当NTC传感器对应的温度值下降至稳定段的打开点温度值时,打开座椅加热装置;
    其中,稳定段的关闭点温度值与打开点温度值通过下面的公式计算获得:
    T_NTC_HeatTurnOFF=T_NTC_Control_Lx+deltaT_NTC_Neg/2;
    T_NTC_HeatTurnON=T_NTC_Control_Lx-deltaT_NTC_Neg/2;
    其中,T_NTC_HeatTurnOFF为稳定段的关闭点温度值,T_NTC_HeatTurnON为稳定段的打开点温度值,T_NTC_Control_Lx为该档位所对应的NTC目标温度,deltaT_NTC_Neg为预定的温降值。
  8. 如权利要求7所述的一种汽车座椅加热温度控制方法,其中,进一步包括:
    预先标定每一加热档位所对应的所述初始升温段的目标温度、NTC目标温度、温降值、差值判断阀值、升幂函数并存储。
  9. 一种汽车座椅加热温度控制装置,其中,包括:
    档位加热期间判断单元,用于在打开或切换至某加热档位时,根据当前NTC传感器对应的温度值,确定当前所处的加热期间,所述加热期间包括初始升温段、趋近段以及稳定段;
    分段控制单元,用于根据所述每一加热期间所对应的加热策略,分段控制座椅加热装置的通断,使座椅表面温度达到并稳定在所述档位期望的目标温度上。
  10. 如权利要求9所述的一种汽车座椅加热温度控制装置,其中,所述档位加热期间判断单元进一步包括:
    比较单元,用于将当前NTC传感器对应的温度值与一预定的温度阀值进行比较;
    加热期间确定单元,用于在所述比较单元的比较结果为当前NTC传感器对应的温度值高于或等于所述温度阀值时,则确定当前所处的加热期间为稳定期,反之,则确定当前所处的加热期间为初始升温段。
  11. 如权利要求10所述的一种汽车座椅加热温度控制装置,其中,所述分段控制单元包括:
    初始升温段控制单元,用于控制所述座椅加热装置在所述加热档位上一直处于连通状态,直至所述NTC传感器对应的温度值达到该档位所对应的初始升温段的目标温度;
    趋近段控制单元,用于在当前处于趋近段时,按所述档位的趋近段控制策略,通过控制所述座椅加热装置间隙性通断,使所述NTC传感器对应的温度值逐渐趋近于该档位所对应的NTC目标温度;
    稳定段控制单元,用于当前处于稳定估时,按所述档位的稳定段控制策略,通过控制所述座椅加热装置间隙性通断,使所述NTC传感器对应的温度值在该档位所对应的NTC目标温度上下波动。
  12. 如权利要求11所述的一种汽车座椅加热温度控制装置,其中,所 述趋近段控制单元包括:
    趋近段加热开关控制单元,用于在进行座椅加热时,当NTC传感器对应的温度值上升至每一通断循环中对应的关闭点温度值时,关闭座椅加热装置;在关闭座椅加热装置后,当NTC传感器对应的温度值下降至对应的打开点温度值时,打开座椅加热装置;
    其中,所述每一通断循环中的关闭点温度值与打开点温度值通过下述的公式计算获得:
    T_NTC_HeatTurnOFF(n)=T_NTC_HeatTurnON(n-1)+deltaT_NTC_Neg-deltaT(n+1);
    T_NTC_HeatTurnON(n)=T_NTC_HeatTurnOFF(n-1)-deltaT_NTC_Neg;
    T_NTC_HeatTurnOFF(0)=T_NTC_MAX_Lx;
    其中,n是当前循环中的打开加热或关闭加热是趋近段中第n次,T_NTC_HeatTurnOFF(n)为第n次关闭时的关闭点温度值,T_NTC_HeatTurnON(n-1)为第n-1次打开时的打开点温度值;T_NTC_HeatTurnON(n)为第n次打开时的打开点温度值,T_NTC_HeatTurnOFF(n-1)为第n-1次关闭时的关闭点温度值,deltaT_NTC_Neg为预定的温降值,deltaT(n+1)为预定的降幂函数;T_NTC_MAX_Lx为该档位所对应的初始升温段的目标温度。
  13. 如权利要求12所述的一种汽车座椅加热温度控制装置,其中,所述趋近段控制单元进一步包括:
    趋近判断单元,用于在满足下述公式时,确定NTC传感器对应的温度值趋近于该档位所对应的NTC目标温度:
    T_NTC_HeatTurnOFF-(T_NTC_Control_Lx+deltaT_NTC_Neg/2)<=deltaT_NTC_ApprochToStedy
    其中,T_NTC_Control_Lx为该档位所对应的NTC目标温度,deltaT_NTC_Neg预定的温降值,deltaT_NTC_ApprochToStedy为一预定的差值判断阀值。
  14. 如权利要求13所述的一种汽车座椅加热温度控制方法,其中,稳定段控制单元具体包括:
    稳定段加热开关控制单元,用于在进行座椅加热时,当NTC传感器对应的温度值上升至稳定段的关闭点温度值时,关闭座椅加热装置;在关闭座椅加热装置后,当NTC传感器对应的温度值下降至稳定段的打开点温度值时,打开座椅加热装置;
    其中,稳定段的关闭点温度值与打开点温度值通过下面的公式计算获得:
    T_NTC_HeatTurnOFF=T_NTC_Control_Lx+deltaT_NTC_Neg/2;
    T_NTC_HeatTurnON=T_NTC_Control_Lx-1deltaT_NTC_Neg/2;
    其中,T_NTC_HeatTurnOFF为稳定段的关闭点温度值,T_NTC_HeatTurnON为稳定段的打开点温度值,T_NTC_Control_Lx为该档位所对应的NTC目标温度,deltaT_NTC_Neg为预定的温降值。
  15. 如权利要求14所述的一种汽车座椅加热温度控制装置,其中,进一步包括:
    标定存储单元,用于预先标定每一加热档位所对应的所述初始升温段的目标温度、NTC目标温度、温降值、温度阈值、差值判断阀值、升幂函数,并存储。
  16. 一种汽车座椅加热温度控制系统,其中,包括:
    温度传感器,设置于汽车座椅中,用于检测汽车座椅表面的温度;
    控制装置,包括有一汽车座椅加热温度控制装置;
    座椅加热装置,用于根据所述分段控制装置的控制,对汽车座椅进行加热;
    其中,所述汽车座椅加热温度控制装置包括:
    档位加热期间判断单元,用于在打开或切换至某加热档位时,根据当前NTC传感器对应的温度值,确定当前所处的加热期间,所述加热期间包括初始升温段、趋近段以及稳定段;
    分段控制单元,用于根据所述每一加热期间所对应的加热策略,分段控制座椅加热装置的通断,使座椅表面温度达到并稳定在所述档位期望的目标 温度上。
  17. 如权利要求16所述的系统,其中,所述档位加热期间判断单元进一步包括:
    比较单元,用于将当前NTC传感器对应的温度值与一预定的温度阀值进行比较;
    加热期间确定单元,用于在所述比较单元的比较结果为当前NTC传感器对应的温度值高于或等于所述温度阀值时,则确定当前所处的加热期间为稳定期,反之,则确定当前所处的加热期间为初始升温段。
  18. 如权利要求17所述的系统,其中,所述分段控制单元包括:
    初始升温段控制单元,用于控制所述座椅加热装置在所述加热档位上一直处于连通状态,直至所述NTC传感器对应的温度值达到该档位所对应的初始升温段的目标温度;
    趋近段控制单元,用于在当前处于趋近段时,按所述档位的趋近段控制策略,通过控制所述座椅加热装置间隙性通断,使所述NTC传感器对应的温度值逐渐趋近于该档位所对应的NTC目标温度;
    稳定段控制单元,用于当前处于稳定估时,按所述档位的稳定段控制策略,通过控制所述座椅加热装置间隙性通断,使所述NTC传感器对应的温度值在该档位所对应的NTC目标温度上下波动。
  19. 如权利要求18所述的系统,其中,所述趋近段控制单元包括:
    趋近段加热开关控制单元,用于在进行座椅加热时,当NTC传感器对应的温度值上升至每一通断循环中对应的关闭点温度值时,关闭座椅加热装置;在关闭座椅加热装置后,当NTC传感器对应的温度值下降至对应的打开点温度值时,打开座椅加热装置;
    其中,所述每一通断循环中的关闭点温度值与打开点温度值通过下述的公式计算获得:
    T_NTC_HeatTurnOFF(n)=T_NTC_HeatTurnON(n-1)+deltaT_NTC_Neg-deltaT(n+1);
    T_NTC_HeatTurnON(n)=T_NTC_HeatTurnOFF(n-1)-deltaT_NTC_Neg;
    T_NTC_HeatTurnOFF(0)=T_NTC_MAX_Lx;
    其中,n是当前循环中的打开加热或关闭加热是趋近段中第n次,T_NTC_HeatTurnOFF(n)为第n次关闭时的关闭点温度值,T_NTC_HeatTurnON(n-1)为第n-1次打开时的打开点温度值;T_NTC_HeatTurnON(n)为第n次打开时的打开点温度值,T_NTC_HeatTurnOFF(n-1)为第n-1次关闭时的关闭点温度值,deltaT_NTC_Neg为预定的温降值,deltaT(n+1)为预定的降幂函数;T_NTC_MAX_Lx为该档位所对应的初始升温段的目标温度。
  20. 如权利要求19所述的系统,其中,所述趋近段控制单元进一步包括:
    趋近判断单元,用于在满足下述公式时,确定NTC传感器对应的温度值趋近于该档位所对应的NTC目标温度:
    T_NTC_HeatTurnOFF-(T_NTC_Control_Lx+deltaT_NTC_Neg/2)<=deltaT_NTC_ApprochToStedy
    其中,T_NTC_Control_Lx为该档位所对应的NTC目标温度,deltaT_NTC_Neg预定的温降值,deltaT_NTC_ApprochToStedy为一预定的差值判断阀值。
  21. 如权利要求20所述的系统,其中,稳定段控制单元具体包括:
    稳定段加热开关控制单元,用于在进行座椅加热时,当NTC传感器对应的温度值上升至稳定段的关闭点温度值时,关闭座椅加热装置;在关闭座椅加热装置后,当NTC传感器对应的温度值下降至稳定段的打开点温度值时,打开座椅加热装置;
    其中,稳定段的关闭点温度值与打开点温度值通过下面的公式计算获得:
    T_NTC_HeatTurnOFF=T_NTC_Control_Lx+deltaT_NTC_Neg/2;
    T_NTC_HeatTurnON=T_NTC_Control_Lx-1deltaT_NTC_Neg/2;
    其中,T_NTC_HeatTurnOFF为稳定段的关闭点温度值, T_NTC_HeatTurnON为稳定段的打开点温度值,T_NTC_Control_Lx为该档位所对应的NTC目标温度,deltaT_NTC_Neg为预定的温降值。
  22. 如权利要求21所述的系统,其中,进一步包括:
    标定存储单元,用于预先标定每一加热档位所对应的所述初始升温段的目标温度、NTC目标温度、温降值、温度阈值、差值判断阀值、升幂函数,并存储。
PCT/CN2017/119933 2016-12-30 2017-12-29 一种汽车座椅加热温度控制方法、装置及系统 Ceased WO2018121748A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/304,141 US11505098B2 (en) 2016-12-30 2017-12-29 Temperature control method, device and system for vehicle seat heating

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201611261427.2 2016-12-30
CN201611261427.2A CN106740341B (zh) 2016-12-30 2016-12-30 一种汽车座椅加热温度控制方法、装置及系统

Publications (1)

Publication Number Publication Date
WO2018121748A1 true WO2018121748A1 (zh) 2018-07-05

Family

ID=58954053

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/119933 Ceased WO2018121748A1 (zh) 2016-12-30 2017-12-29 一种汽车座椅加热温度控制方法、装置及系统

Country Status (3)

Country Link
US (1) US11505098B2 (zh)
CN (1) CN106740341B (zh)
WO (1) WO2018121748A1 (zh)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106740341B (zh) 2016-12-30 2019-09-03 广州汽车集团股份有限公司 一种汽车座椅加热温度控制方法、装置及系统
CN108459637B (zh) * 2017-08-08 2020-06-12 米技电子电器(上海)有限公司 一种加速炉具升温的控制方法
CN109606219A (zh) * 2018-12-14 2019-04-12 江铃控股有限公司 汽车座椅加热系统
CN111409521A (zh) * 2019-01-07 2020-07-14 长城汽车股份有限公司 一种座椅加热联动控制方法和系统
CN111619415B (zh) * 2019-02-27 2021-10-22 广州汽车集团股份有限公司 一种汽车座椅加热温度传感器故障检测方法及装置
CN110811202A (zh) * 2019-11-13 2020-02-21 上海理工大学 电加热变温座椅
CN113126666A (zh) * 2019-12-31 2021-07-16 财团法人工业技术研究院 温度控制系统与温度控制方法
CN114251806B (zh) * 2020-09-24 2023-07-28 广东美的制冷设备有限公司 空调器的控制方法、装置、空调器及可读存储介质
CN112706667B (zh) * 2021-01-28 2022-01-11 三一专用汽车有限责任公司 座椅加热控制系统和车辆
FR3127448B1 (fr) * 2021-09-30 2024-09-06 Faurecia Sieges Dautomobile Procédé de traitement de données et ensemble d’un siège et d’un contrôleur
JP7667111B2 (ja) * 2022-03-08 2025-04-22 日本発條株式会社 シートヒータおよび移動体用シート
CN114778129B (zh) * 2022-04-12 2025-06-27 中国第一汽车股份有限公司 自动化测试系统、方法、电子设备及存储介质
CN117022075B (zh) * 2023-07-28 2025-08-15 重庆长安汽车股份有限公司 一种加热控制方法、装置、设备及存储介质
CN120533872B (zh) * 2025-06-30 2026-02-27 广州市浩宇汽车用品有限公司 一种汽车内饰垫成型控制方法及系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050040682A1 (en) * 2003-06-30 2005-02-24 Thomas Ulbrich Heating system and method of controlling a heating system
CN103448589A (zh) * 2013-08-09 2013-12-18 浙江吉利汽车研究院有限公司 一种基于模糊控制的汽车座椅智能加热控制系统及方法
JP5708292B2 (ja) * 2011-06-21 2015-04-30 トヨタ紡織株式会社 シートヒータ及びそれを備える車両用シート
CN104859501A (zh) * 2014-02-20 2015-08-26 现代自动车株式会社 用于汽车座椅的加热装置及其控制方法
CN105813505A (zh) * 2013-12-05 2016-07-27 金瑟姆股份公司 针对受气候控制座椅的系统和方法
CN106740341A (zh) * 2016-12-30 2017-05-31 广州汽车集团股份有限公司 一种汽车座椅加热温度控制方法、装置及系统

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003042590A (ja) * 2001-07-27 2003-02-13 Matsushita Electric Ind Co Ltd 温度調節装置
CN101587357A (zh) * 2009-05-12 2009-11-25 上海微电子装备有限公司 温度控制方法及其温度控制系统
WO2011074184A1 (ja) * 2009-12-14 2011-06-23 パナソニック株式会社 座席用ヒータ
FR2996434B1 (fr) * 2012-10-08 2014-12-19 Seb Sa Procede et appareil electromenager melangeur chauffant prevus pour la realisation de sauces et/ou de preparations sucrees
JP6481497B2 (ja) * 2014-06-03 2019-03-13 株式会社デンソー 温調制御装置
CN204222694U (zh) * 2014-11-12 2015-03-25 上海安闻汽车电子有限公司 一种座椅电加热装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050040682A1 (en) * 2003-06-30 2005-02-24 Thomas Ulbrich Heating system and method of controlling a heating system
JP5708292B2 (ja) * 2011-06-21 2015-04-30 トヨタ紡織株式会社 シートヒータ及びそれを備える車両用シート
CN103448589A (zh) * 2013-08-09 2013-12-18 浙江吉利汽车研究院有限公司 一种基于模糊控制的汽车座椅智能加热控制系统及方法
CN105813505A (zh) * 2013-12-05 2016-07-27 金瑟姆股份公司 针对受气候控制座椅的系统和方法
CN104859501A (zh) * 2014-02-20 2015-08-26 现代自动车株式会社 用于汽车座椅的加热装置及其控制方法
CN106740341A (zh) * 2016-12-30 2017-05-31 广州汽车集团股份有限公司 一种汽车座椅加热温度控制方法、装置及系统

Also Published As

Publication number Publication date
US20200317098A1 (en) 2020-10-08
CN106740341B (zh) 2019-09-03
CN106740341A (zh) 2017-05-31
US11505098B2 (en) 2022-11-22

Similar Documents

Publication Publication Date Title
WO2018121748A1 (zh) 一种汽车座椅加热温度控制方法、装置及系统
CN104501369B (zh) 空调器及其温度调节方法
CN108354440B (zh) 烹饪控制方法及烹饪控制装置、烹饪设备
US9188054B2 (en) Control device for a vehicle that includes a thermowax switching valve
CN104075371B (zh) 一种电暖器及其控制方法
CN110089941B (zh) 一种温度调节控制方法、系统及饮水设备
JP2003239745A (ja) 電子式サーモスタットの制御方法
TWI515525B (zh) 溫度控制電路、溫度控制方法以及充電系統
CN104423401A (zh) 饮水机及其的出水温度控制方法
CN106679076B (zh) 变频器功率模块温度控制方法和控制装置
WO2013018919A1 (ja) ヒータ制御装置及び方法並びにプログラム
CN111165069B (zh) 座椅加热器、温度控制方法和存储温度控制程序的计算机介质
CN107150570A (zh) 一种新能源汽车采暖控制方法
WO2022121905A1 (zh) 动力电池的充电加热控制方法和装置、介质、设备、车辆
WO2015024401A1 (zh) 热水器预约制热控制方法及系统
CN109654776B (zh) 一种热泵系统的除霜控制方法及系统
CN113677055B (zh) 液体加热器及其基于液量估计的智能加热控制方法
JP2021034217A (ja) 温度調整システムの制御装置
TWI494722B (zh) Adjuster, the operation amount output method, the operation amount changing setting program, and the storage medium storing the program
CN106403196B (zh) 空调除湿控制方法及控制装置
JP2016207383A (ja) 電池の昇温装置
CN115091914B (zh) 新能源汽车的加热控制方法、装置及新能源汽车
CN119502781B (zh) 一种汽车座椅加热控制方法及系统
US10457119B2 (en) Air conditioning system for motor vehicles
JP2010066119A (ja) 電力調整器

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17888032

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17888032

Country of ref document: EP

Kind code of ref document: A1