Vehicle air-conditioning system and control method
First Claim
1. A vehicle air-conditioning system comprisingan air conditioner operation panel equipped with one or more momentary switches,a control unit responsive to at least contact information from the momentary switches for outputting a control signal for air conditioning control,a main air-conditioning system unit which operates in response to the control signal,discriminating means for discriminating whether or not any momentary switch is on at system power-up, andinitialization means for setting the system to a predefined initial control state when the discriminating means discriminates that at least one momentary switch is on.
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Abstract
A vehicle air-conditioning system which operates in response to the manipulation of momentary switches is provided with discriminating means for discriminating whether any momentary switch is on at the time of system power-up. When the discriminating means finds that one or more momentary switches are on, the vehicle air-conditioning system is set to a predefined initial control state independent of contact information from such momentary switch or switches. As a result, at least the minimum temperature control required for occupant comfort can be secured when shorted contact sticking occurs in a momentary switch provided on an operation panel.
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Citations
12 Claims
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1. A vehicle air-conditioning system comprising
an air conditioner operation panel equipped with one or more momentary switches, a control unit responsive to at least contact information from the momentary switches for outputting a control signal for air conditioning control, a main air-conditioning system unit which operates in response to the control signal, discriminating means for discriminating whether or not any momentary switch is on at system power-up, and initialization means for setting the system to a predefined initial control state when the discriminating means discriminates that at least one momentary switch is on.
- 9. A method of controlling a vehicle air-conditioning system including a main air-conditioning system unit and an air-conditioner operation panel equipped with one or more momentary switches, wherein the main air-conditioning system unit is controlled by an air-conditioning control signal output in response to at least contact information from the momentary switches, the method comprising the step of discriminating whether or not any momentary switch is on at system power-up and the step of setting the system to a predefined initial control state independent of contact information from such momentary switch or switches when at least one momentary switch is discriminated to be on.
Specification