JP4098968B2 - Air conditioner for vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle air conditioner, and more particularly to a vehicle air conditioner that can write data including calculation coefficient data and correction data that determine air conditioning characteristics of the vehicle air conditioner.
[0002]
[Prior art]
In a vehicle air conditioner, the target air temperature, the amount of air blown out to the passenger compartment, etc. are set cabin temperature, passenger compartment air temperature (hereinafter also referred to as “inside air temperature”), and passenger compartment outside air temperature (hereinafter referred to as “outside air temperature”). ), The amount of air blown into the passenger compartment determined by a calculation based on a predetermined calculation formula based on the amount of solar radiation, etc. Harmony is taking place.
[0003]
At this time, the calculation coefficient data and the correction data in the arithmetic expression used for air conditioning determined in advance are air conditioning data for determining the air conditioning characteristics of the vehicle air conditioning apparatus, and are used for air conditioning. It is determined by the performance of the heater, the performance of the cooler, the performance of the blower, the effective cross-sectional area of the air-conditioning duct, the shape and piping route, the effective cross-sectional area of the air-conditioning air blowing duct, the shape and piping route, the characteristics of the damper, etc. These calculation coefficient data and correction data are stored in advance in a mask ROM provided in a microcomputer that is a control device constituting a part of the air conditioner.
[0004]
The calculation coefficient data and correction data stored in the mask ROM are referred to, based on the calculated calculation coefficient data and correction data, the set cabin temperature, the detected inside air temperature, the detected outside air temperature, the detected solar radiation amount, etc. By calculating based on a predetermined calculation formula, etc., the temperature of the blown air to the passenger compartment, the amount of blown air, etc. are obtained, and the air at the calculated target blown air temperature is blown out of the blowout duct by the calculated amount of blowout, Air conditioning in the passenger compartment.
[0005]
However, there are cases where a predetermined air-conditioning characteristic cannot be obtained due to a change in the vehicle type or a change in the design of the vehicle. Specifically, the characteristics of the heater for air conditioning, the characteristics of the cooler, the characteristics of the blower, the effective cross-sectional area of the air-conditioning duct, the shape and the piping path, the effective cross-sectional area of the air-conditioning air blowing duct, the shape and the The piping route or the like is changed, and as a result of these changes, the passenger compartment air temperature after air conditioning may be felt high or low, and a desired comfort may not be provided.
[0006]
In such a case, it is necessary to update data including calculation coefficient data and correction data written in the mask ROM during the development period and the manufacturing process.
[0007]
[Problems to be solved by the invention]
However, in order to rewrite the data stored in the mask ROM after manufacturing the mask ROM, a semiconductor manufacturer also needs a period of several weeks, and data including calculation coefficient data and correction data stored in the mask ROM. It may be difficult to adapt the renewal of the vehicle to the mass production time of the vehicle.
[0008]
An object of the present invention is to provide a vehicle air conditioner that can easily write data including calculation coefficient data and correction data and that does not require addition of new hardware for data writing. To do.
[0009]
[Means for Solving the Problems]
A vehicle air conditioner according to the present invention includes a computer for receiving an instruction signal from an operation instruction switch provided on an operation / display panel and controlling a vehicle air conditioner body to perform air conditioning control of a passenger compartment. In a vehicle air conditioner including a control device including:
EEPROM for storing data including calculation coefficient data and correction data for determining air conditioning characteristics;
The detection signal for air conditioning is a signal having a predetermined value, a signal having a detected cabin outside air temperature equal to or higher than a predetermined temperature and a signal having a detected vehicle cabin outside air temperature equal to or lower than a predetermined temperature, or the outside of the detection vehicle interior Detecting means for detecting that the air temperature is input with a signal equal to or lower than a predetermined temperature and the detected vehicle interior air temperature as a signal equal to or higher than the predetermined temperature ;
When it is detected by the detection means that a signal having the predetermined value is input, a predetermined predetermined value in a signal input / output terminal provided for air conditioning control in the operation / display panel or the control device. Recognition means for recognizing the terminal as a data input / output terminal;
Following recognition by the recognition means, data writing means for writing input data supplied to the data input / output terminal into the EEPROM;
Equipped with a,
Further, after detecting that the signal of the predetermined value is input by the detecting means, timing of a predetermined period is started, and the recognition by the recognition means and the data are started during the predetermined period. Writing by the writing means is continued, and data written by the writing means is read using the data input / output terminal during the continuation period, and the read data is compared with the input data .
[0010]
According to the vehicle air conditioner of the present invention, the signal input / output provided for the air conditioning control in the operation / display panel or the control device by inputting the air conditioning signal at a predetermined value. Since a predetermined predetermined terminal among the terminals is recognized as a data input / output terminal, and subsequently data input to the data input / output terminal is written to the EEPROM, data input for writing data to the EEPROM is performed. There is no need to provide an output terminal independently, and a predetermined predetermined terminal among the signal input / output terminals provided for air conditioning control in the operation / display panel or the control device is time-shared with the data input / output terminals. Thus, no additional hardware is required for writing data to the EEPROM.
[0011]
Furthermore, according to the air conditioning apparatus for a vehicle of the present invention, the data is written to the EEPROM by supplying the data including the calculation coefficient data and the correction data to the data input / output terminal. It is easy to write data and rewrite data stored in the EEPROM. The characteristics of the heater for air conditioning, the characteristics of the cooler, the characteristics of the blower, the effective cross-sectional area of the air conditioning duct, the shape and piping route, It is possible to easily cope with changes in vehicle types and changes in vehicle design including changes in the effective cross-sectional area, shape, and piping route of the blowout duct.
[0012]
Furthermore, according to the vehicle air conditioner of the present invention, the predetermined input terminal in the signal input / output terminal provided for air conditioning control in the operation / display panel or the control device is the data input / output terminal. In order to recognize this, it is sufficient to input a signal for air conditioning to the data input / output terminal at a predetermined value, so that a new independent device or terminal is not required.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Embodiments of a vehicle air conditioner according to the present invention will be described.
[0014]
FIG. 1 is a schematic configuration explanatory diagram of a vehicle air conditioner according to an embodiment of the present invention.
[0015]
Reference numeral 1 denotes a vehicle air conditioner according to an embodiment of the present invention. The vehicle air conditioner 1 includes a vehicle air conditioner body 2 and a microcomputer, and controls the vehicle air conditioner body 2. Then, an operation / display panel 7 having a control device 5 that performs air conditioning control of the passenger compartment and an indicator that displays an air conditioning control status together with an operation switch that gives an instruction to the control device 5 is provided.
[0016]
As already known, the vehicle air conditioner main body 2 is provided in the air conditioning duct 12 so as to be rotatable from the upstream side to the downstream side so as to make the intake air a vehicle interior air or a vehicle exterior air. The intake damper 14 for selecting whether to make the air-fuel mixture or the air-fuel mixture thereof, the blower 16 for blowing the air sucked through the intake damper 14 to the vehicle compartment 48, and the cooling circuit 31 described later during operation, the blown air and heat Cooler 30 including evaporator 18 to be replaced, mix damper 20 for controlling the amount of air to be diverted to heater 22 that circulates the cooling water of the on-vehicle internal combustion engine and heats the passing air in the air that has passed through evaporator 18, the vehicle A mode switching damper 24 for selecting an air outlet to the chamber 48 is provided.
[0017]
The air outlet to the passenger compartment 48 is a vent outlet 24-1 that blows out air toward the passenger's face, a foot outlet 24-2 that blows out air from the feet, and a defrost outlet that blows out along the windshield (see FIG. (Not shown), and one or two of the outlets are selected by the mode switching damper 24.
[0018]
The microcomputer constituting the control device 5 basically includes a CPU 52, a ROM 54 storing a program for air conditioning in cooperation with the CPU 52, a work area for air conditioning, and calculation data and calculation result data. RAM 56, timer 60, analog multiplexer 62, and A / D converter 64 for A / D converting the output of analog multiplexer 62, and CPU 52 stores data including operation coefficient data and correction data. An EEPROM 58 is connected.
[0019]
As shown in FIG. 2, the microcomputer that constitutes the control device 5 includes an automatic air conditioner control circuit 65 that performs air conditioning control of the passenger compartment, and a detection signal for air conditioning at a predetermined value continuously for a certain period. A detection circuit 66 for detecting the input and a predetermined input signal input / output terminal provided for air conditioning control on the operation / display panel 7 when an input of a predetermined signal is detected. A recognition circuit 67 that recognizes a predetermined terminal as a data input / output terminal only during a predetermined period, and a data writing circuit 68 that writes input data supplied to the data input / output terminal to the EEPROM 58 following the recognition by the recognition circuit 67. And functionally.
[0020]
Here, the signals detected by the detection circuit 66 are, for example, a signal in which the detected vehicle cabin outside temperature is equal to or higher than a predetermined temperature and a signal in which the detected vehicle cabin outdoor temperature is equal to or lower than a predetermined temperature.
[0021]
In addition, the signal detected by the detection circuit 66 may be, for example, a signal that the detected vehicle cabin outside temperature is equal to or lower than a predetermined temperature and a signal that the detected vehicle cabin outdoor temperature is equal to or higher than a predetermined temperature.
[0022]
On the other hand, the operation / display panel 7 is provided at the lower part of the instrument panel of the vehicle.
[0023]
The operation / display panel 7 includes an AUTO instruction switch 72 for instructing the start of an automatic air conditioner, an OFF instruction switch 74 for instructing an automatic air conditioner stop, a temperature increase instruction switch 76 for instructing an increase in the set cabin temperature, and a passenger compartment. A temperature lowering instruction switch 78 for instructing to lower the set temperature, a display unit 80, a blowing mode instruction switch 92 for manually instructing blowing mode switching, an air volume instruction switch 94 for manually instructing air volume switching, a defrost instruction switch 98, and an inside / outside air switching instruction A switch 100 is provided, and the output of each instruction switch is supplied to the control device 5, and corresponding control is performed under the control of the control device 5.
[0024]
That is, the automatic air conditioner is activated by an instruction from the AUTO instruction switch 72, the automatic air conditioner is stopped by an instruction from the OFF instruction switch 74, and the set cabin is instructed by an instruction from the temperature rise instruction switch 76 which instructs to raise the set cabin temperature. An instruction to raise the temperature is given to designate the set cabin temperature, an instruction to lower the set cabin temperature is given by the instruction of the temperature lowering instruction switch 78, the set cabin temperature is designated, and based on the instruction of the blowing mode instruction switch 92 Control of the mode switching damper 24 selects air delivery from the instructed air outlet, and the air volume is switched by switching the voltage applied to the blower 16 according to the instruction of the air volume instruction switch 94, and according to the instruction of the defrost instruction switch 98. Based on the instruction of the inside / outside air switching instruction switch 100, defrosting is performed. Recirculated air or outside air capture is selected in the intake damper 14.
[0025]
The display unit 80 includes a set passenger compartment temperature display unit 82, a blowing mode display unit 84, an air volume display unit 86, a status display unit 88 of the heater 22, and a time display unit 90. Based on instructions from the control device 5, Each of the set cabin temperature, the blowing mode, the air volume, the state of the heater 22 and the current time is displayed.
[0026]
On the other hand, an inside air temperature sensor 36 that detects the air temperature inside the vehicle interior, an outside air temperature sensor 38 that detects the outside air temperature inside the vehicle interior, an evaporator air temperature sensor 40 that detects the evaporator outlet air temperature, and a heater that detects the temperature of the heater 22. The outputs A to F of the temperature sensor 42, the solar radiation sensor 44 that detects the solar radiation amount, and the potentiometer 46 that detects the mix damper opening degree are supplied to the control device 5.
[0027]
In the control device 5 that receives these outputs A to F, the analog multiplexer 62 sequentially selects one of the inputs to the analog multiplexer 62, and the selected input is A / D converted by the A / D converter 64. Based on the A / D conversion output, the automatic air conditioner instruction is given under the control of the automatic air conditioner control circuit 65, and when the automatic air conditioner stop instruction is given, the operation / display panel 7 is displayed. Under the control of the control device 5 based on the output from each operation switch provided, the position of the intake damper 14 is controlled by the output of the drive circuit 26 including the actuator, and the rotation of the blower 16 is controlled by the output of the drive circuit 28. As a result, the air flow is changed to the driving timing, the driving cycle and the stop of the cooling machine 30 via the cooling circuit 31 according to the driving speed including the actuator. Position of mixing damper 20 by 32 output of the position of the mode switching damper 24 by the output of the driver circuit 34 including the actuator, are controlled.
[0028]
The operation of the vehicle air conditioner 1 according to the present invention will be described by taking an automatic air conditioner as an example.
[0029]
When the execution of the program is started, the initial setting is made, and the setting vehicle is set by the output of each sensor 36, 38, 40, 42, 44, the output of the potentiometer 46, and the temperature increase instruction switch 76 and the temperature decrease instruction switch 78. The room temperature is read and temporarily stored in the RAM 56. Subsequently, the setting state of each switch on the operation / display panel 7 is read.
[0030]
Subsequently, the target blown air temperature T0 of the air blown into the vehicle compartment 48 is temporarily stored in the RAM 56 after calculation. In order to calculate the target blown air temperature T0, calculation is performed from the detected inside air temperature Tr, the detected outside air temperature Ta, the detected value of the solar radiation amount Ts, the set cabin temperature Td, and the like, and the calculation formula includes a plurality of calculation count data K1n. And correction data K2 is necessary. The target blown air temperature T0 is related to the deviation between the set cabin temperature Td and the detected inside air temperature Tr, and further corresponds to a value corrected by the detected outside air temperature Ta and the solar radiation amount Ts.
[0031]
The drive control of the blower 16 applies a drive voltage between the voltage V0 and the voltage V1 based on the preset pattern shown in FIG. 3A to the drive motor of the blower 16 based on the target blown air temperature T0. Is done by.
[0032]
On the other hand, the opening degree θ (%) of the mix damper 20
θ = 100 (T0−Te) / (Th−Te)
Is temporarily stored in the RAM 56 after calculation.
[0033]
Here, the opening θ of the mix damper 20 corresponds to the target blowing air temperature T0, the evaporator outlet air temperature Te, and the heater temperature Th, as schematically shown in FIG. 3B, the foot, the defrost, and the foot defrost. 3 is controlled according to the curve ε of FIG. 3B, and in the vent and bi-level modes, it is controlled according to the curve ζ of FIG. 3B. The amount of air passing through the heater 22 is increased by increasing the opening degree θ of the mix damper 20. The heater temperature Th is detected by a heater temperature sensor 42. The evaporator outlet air temperature Te is detected by the evaporator outlet air temperature sensor 40.
[0034]
As shown in FIG. 3 (c), the mode switching damper 24 is automatically switched based on the target blown air outlet 24-1 and the air blown from the vent blower 24-2, and air from the foot blower 24-2, based on the target blown air temperature T0. The foot blowout, the vent blowout port 24-1 and the foot blowout port 24-2 are switched to the bi-level blowout that blows out air. In this switching, hysteresis is provided.
[0035]
FIGS. 3 (a) the target outlet air temperature of the changing point T ₁ in, the target outlet air temperature change point T _2, the range of the driving voltage V0～V1, the slope of the line gamma, linear δ gradient models, the characteristics of the blower 16 Varies depending on etc. The target blowing air temperature at the changing points T _{3 to} T ₆ for switching the blowing port in FIG. 3C varies depending on the vehicle type and the like. These are stored in the EEPROM 58 and need to be updated whenever the vehicle type, blower 16, heater 22, and cooler 30 are changed.
[0036]
Furthermore, the opening degree θ obtained by the above calculation is a theoretical value, and the correction coefficient data thereof is obtained from the vehicle type, the characteristics of the blower 16, the characteristics of the heater 22, and the characteristics of the cooler 30. It is stored in the EEPROM 58 in the form of a table. Every time the vehicle type, the blower 16, the heater 22, and the cooler 30 are changed, it is necessary to update the correction data stored in the EEPROM 58 corresponding to the change. This amount of data is usually the largest.
[0037]
However, a plurality of calculation coefficient data K1n and correction data K2 for calculating the target blown air temperature T0, target blown air temperatures T ₁ and T ₂ for controlling the air volume of the blower 16, gradients γ and δ, and drive voltage The lower limit voltage values V0 and V1, the opening θ pattern of the mix damper 20 shown in FIG. 3B, the target blowout air temperatures T _{3 to} T ₆ for switching the mode switching damper 24, and the like are the vehicle air conditioners. 1 is data that determines the air conditioning characteristics of 1, and these are written in the EEPROM 58.
[0038]
Therefore, the data stored in the EEPROM 58 including the calculation coefficient data and the correction data is used every time the vehicle type, the blower 16, the heater 22, and the cooler 30 are changed, and the air blowout duct to the air conditioning duct 12 and the vehicle compartment 48. Updated each time the effective cross-sectional area, shape, and piping path of the pipe are changed, and whenever the link of the intake damper 14, the link of the mix damper 20, and the link of the mode switching damper 24 are changed. Will need to be done.
[0039]
Further, it may be necessary to newly write data for determining the air conditioning characteristics of the vehicle air conditioner 1 in the EEPROM 58 in which no data is stored.
[0040]
Next, a data writing routine when it is necessary to write data including calculation coefficient data and correction data to the EEPROM 58 will be described based on the flowchart shown in FIG.
[0041]
When a predetermined input condition signal is input, the writing routine is entered (step S1). When the input condition signal is not input in step S1, an air conditioning operation is performed (step S7).
[0042]
Here, the detection circuit 66 determines whether or not the input condition signal in step S1 has been input. More specifically, the predetermined input condition signal is, for example, a signal when the detected temperature from the inside air temperature sensor 36 is a temperature of −150 ° C. or lower, and the detected temperature from the outside air temperature sensor 38 is 150. It is assumed that it is a signal at a temperature of ℃ or higher. This is because the data write mode is not entered by a third party and because the temperature sensor used for air conditioning in the vehicle air conditioner 1 is used. This is because the environment 1 does not normally occur.
[0043]
By using such an input condition signal, in order to enter the data writing mode, the output signal of the inside air temperature sensor 36 is a signal at a temperature of −150 ° C. or lower, and the output signal of the outside air temperature sensor 38 is 150 ° C. It is only necessary to supply the control device 5 as a signal at the above temperature, and in addition to the signal used in the vehicle air conditioner 1 to enter the writing routine, a temperature sensor and a signal input / output terminal are newly added. This is because it is not necessary to provide an independent device, and since it is a signal that does not occur in a normal environment, it does not occur during air conditioning.
[0044]
When it is determined in step S1 that the input condition signal has been input, it is checked whether or not the input condition signal continues for a predetermined period (step S2). If it is not determined in step S2 that the input condition signal has been continuously input for a certain period, an air conditioning operation is performed (step S7). When it is determined in step S2 that the input condition signal has been continuously input for a certain period, the data write mode is entered, and time measurement by the timer 60 is started following step S2 (step S3), and then step S4 is performed. Executed.
[0045]
In step S4, the recognition circuit 67 recognizes that a predetermined terminal among the input / output terminals of the operation / display panel 7 is a data input / output terminal for writing data to the EEPROM 58 (step S4). . Following this recognition, it is assumed that the data input to the data input / output terminal is data to be written to the EEPROM 58, is supplied to the EEPROM 58 through the CPU 52, and is written to the EEPROM 58 under the control of the CPU 52 (step S5). .
[0046]
Accordingly, in step S5, the data input subsequently from the data input / output terminal is written into the EEPROM 58, and the data input subsequently from the data input / output terminal is overlaid on the data already stored in the EEPROM 58. By writing the data, the data stored in the EEPROM 58 is updated.
[0047]
Here, the data writing circuit 68 performs writing of data to the EEPROM 58 and updating of data stored in the EEPROM 58 in step S5.
[0048]
As described above, a predetermined terminal among the input / output terminals of the operation / display panel 7 is used as a data input / output terminal for writing data, in which data is written into the EEPROM 58 and data stored in the EEPROM 58 is updated. This is because it is not necessary to provide a new independent terminal.
[0049]
Further, the number of input / output terminals of the operation / display panel 7 includes a temperature increase instruction switch 76, a temperature decrease instruction switch 78, a blowing mode instruction switch 92, an air volume instruction switch 94, a defrost instruction switch 98, an inside / outside air switching instruction switch 100, There are many input / output terminals and the number of terminals of the set passenger compartment temperature display part 82, the blowing mode display part 84, the air volume display part 86, the state display part 88 of the heater 22 and the time display part 90, and the data stored in the EEPROM 58 This is because it is easy to select as a data input / output terminal for updating, and it is possible to cope with a large number of bits of the input data for updating and address data.
[0050]
As a result, a predetermined terminal among the input / output terminals of the operation / display panel 7 is used as a data input / output terminal, and data to be written to the EEPROM 58 from the outside to the data input / output terminal or data update stored in the EEPROM 58 is updated. By sequentially inputting the data for this purpose, the data is written into the EEPROM 58 via the CPU 52 or the data stored in the EEPROM 58 is updated, so that it is possible to easily cope with a change in the vehicle type or a change in the design of the vehicle. can do.
[0051]
Following step S5, it is checked whether or not a predetermined period has elapsed. If it is determined that the predetermined period has not elapsed, the process is repeated from step S4 (step S6).
[0052]
In step S6, when it is determined that a predetermined period has elapsed, step S7 is executed, and an air conditioning operation is performed.
[0053]
Therefore, the writing period and the updating period of the data stored in the EEPROM 58 are limited in terms of the period by the execution of step S6, and the update routine is automatically exited as the period elapses. If the writing of data to the EEPROM 58 or the updating of the data stored in the EEPROM 58 does not end within this period, the writing and updating may be performed again from step S1.
[0054]
In addition, after the data is written in step S5, the written data of the EEPROM 58 and the updated data of the EEPROM 58 may be read through the input / output terminal used for data writing.
[0055]
Furthermore, the data of the written EEPROM 58 and the updated data of the EEPROM 58 are read from the EEPROM 58 in step S6, and the data is not garbled during the data writing by comparing the read data with the input data. You may make it check.
[0056]
【The invention's effect】
As described above, according to the vehicle air conditioner of the present invention, the EEPROM is used instead of the mask ROM. Therefore, the vehicle type, the cooler, the blower, the heater, the shape and piping path of the air conditioning duct, the duct of the air outlet Data can be easily written to the EEPROM in response to changes in the shape and piping route of each damper and the link of each damper, and the data stored in the EEPROM can be stored in the vehicle model, cooler, blower, heater, air conditioning duct shape and It can be easily updated in response to changes in the piping path, the shape of the duct of the air outlet and the piping path, and the link of each damper.
[0057]
Furthermore, according to the vehicle air conditioner of the present invention, it is not necessary to provide a new device independently for writing data into the EEPROM.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a vehicle air conditioner according to an embodiment of the present invention.
FIG. 2 is a functional block diagram of a control device in the vehicle air conditioner according to the embodiment of the present invention.
FIG. 3 is a schematic explanatory diagram for explaining an air conditioning operation in the vehicle air conditioner according to the embodiment of the present invention.
FIG. 4 is a flowchart for explaining the operation of the vehicle air conditioner according to the embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Vehicle air conditioner 2 ... Vehicle air conditioner main body 5 ... Control apparatus 7 ... Operation and display panel 36 ... Inside air temperature sensor 38 ... Outside air temperature sensor 58 ... EEPROM 66 ... Detection circuit 67 ... Recognition circuit 68 ... Data writing circuit

Claims (3)

A vehicle air conditioner having a control unit including a computer for receiving an instruction signal from an operation instruction switch provided on the operation / display panel and controlling the vehicle air conditioner body to control the air conditioning of the passenger compartment. In
EEPROM for storing data including calculation coefficient data and correction data for determining air conditioning characteristics;
The detection signal for air conditioning is a signal having a predetermined value, a signal having a detected cabin outside air temperature equal to or higher than a predetermined temperature and a signal having a detected vehicle cabin outside air temperature equal to or lower than a predetermined temperature, or the outside of the detection vehicle interior Detecting means for detecting that the air temperature is input with a signal equal to or lower than a predetermined temperature and the detected vehicle interior air temperature as a signal equal to or higher than the predetermined temperature ;
When it is detected by the detection means that a signal having the predetermined value is input, a predetermined predetermined value in a signal input / output terminal provided for air conditioning control in the operation / display panel or the control device. Recognition means for recognizing the terminal as a data input / output terminal;
Following recognition by the recognition means, data writing means for writing input data supplied to the data input / output terminal into the EEPROM;
Equipped with a,
Further, after detecting that the signal of the predetermined value is input by the detecting means, timing of a predetermined period is started, and the recognition by the recognition means and the data are started during the predetermined period. A vehicle characterized by continuing writing by a writing means, reading data written by the writing means using the data input / output terminal during the continuation period, and comparing the read data with the input data. Air conditioning equipment. 2. The vehicle air conditioner according to claim 1, wherein the detecting means detects the input of the signal having the predetermined value continuously for a predetermined period. Recognized in the vehicle air conditioner according to claim 1, wherein the recognition means only during a certain period the predetermined terminal determined in advance in the signal input and output terminal, and the data input-output terminal for data writing to the EEPROM An air conditioner for a vehicle.

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