Air-conditioner control system
First Claim
1. A control system for controlling actuator means and display means of an air conditioner, said control system comprising:
- (a) a plurality of temperature-data input terminals;
(b) reference-voltage generating means including a variable resistor, for generating an adjustable reference voltage;
(c) an operational amplifier having an inverting input terminal, a noninverting terminal and an output terminal, said output terminal and said inverting input terminal being connected to each other through a negative feedback resistor, wherein said temperature-data input terminals are connected to said inverting input terminal through respective input resistors, and wherein said reference voltage from said reference-voltage generating means is inputted to said noninverting input terminal;
(d) an A/D converter for converting an output voltage from said operational amplifier to digital data;
(e) mode-signal generating means for sending a mode signal to a below-mentioned microcomputer; and
(f) the microcomputer including;
(i) judging means for judging whether the air conditioner is in a normal control mode or an adjusting mode, on the basis of said mode signal from said mode-signal generating means,(ii) normal-control-mode executing means for outputting a control signal representative of a current air-conditioning state, to said display means and for outputting a control signal to said actuator means of said air conditioner on the basis of said digital data from said A/D converter when said normal-control-mode executing means receives a judgment signal from said judging means indicative of said normal control mode, and(iii) adjusting-mode executing means for outputting a control signal representative of the output voltage from said operational amplifier, to said display means, on the basis of said digital data from said A/D converter when said adjusting-mode executing means receives a judgment signal from said judging means indicative of said adjusting mode.
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Accused Products
Abstract
A control system for controlling an actuator and a display unit of an air-conditioner, and a method of adjusting the control system. An operational amplifier executes calculation on the basis of analogue data from a plurality of temperature-data input terminals. An output from the operational amplifier is sent to a microcomputer through an A/D converter. In a normal control mode, the microcomputer controls the display unit and the actuator of the air conditioner. The microcomputer executes also an adjusting mode in which the microcomputer controls the display unit to display an outut voltage from the operational amplifier. The microcomputer selects one of the modes to be executed in response to a mode signal from a mode-signal generator. A reference voltage is inputted to the operational amplifier from a reference-voltage generating circuit. The reference voltage is adjusted such that the output voltage from the operational amplifier displayed on the display unit is brought to a predetermined standard level.
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Citations
9 Claims
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1. A control system for controlling actuator means and display means of an air conditioner, said control system comprising:
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(a) a plurality of temperature-data input terminals; (b) reference-voltage generating means including a variable resistor, for generating an adjustable reference voltage; (c) an operational amplifier having an inverting input terminal, a noninverting terminal and an output terminal, said output terminal and said inverting input terminal being connected to each other through a negative feedback resistor, wherein said temperature-data input terminals are connected to said inverting input terminal through respective input resistors, and wherein said reference voltage from said reference-voltage generating means is inputted to said noninverting input terminal; (d) an A/D converter for converting an output voltage from said operational amplifier to digital data; (e) mode-signal generating means for sending a mode signal to a below-mentioned microcomputer; and (f) the microcomputer including; (i) judging means for judging whether the air conditioner is in a normal control mode or an adjusting mode, on the basis of said mode signal from said mode-signal generating means, (ii) normal-control-mode executing means for outputting a control signal representative of a current air-conditioning state, to said display means and for outputting a control signal to said actuator means of said air conditioner on the basis of said digital data from said A/D converter when said normal-control-mode executing means receives a judgment signal from said judging means indicative of said normal control mode, and (iii) adjusting-mode executing means for outputting a control signal representative of the output voltage from said operational amplifier, to said display means, on the basis of said digital data from said A/D converter when said adjusting-mode executing means receives a judgment signal from said judging means indicative of said adjusting mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of adjusting a control system for controlling actuator means and display means of an air conditioner, said control system comprising:
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(a) a plurality of temperature-data input terminals; (b) reference-voltage generating means including a variable resistor, for generating an adjustable reference voltage; (c) an operational amplifier having an inverting input terminal, a noninverting terminal and an output terminal, said output terminal and said inverting input terminal being connected to each other through a negative feedback resistor, wherein said temperature-data input terminals are connected to said inverting input terminal through respective input resistors, wherein said reference voltage from said reference-voltage generating means is inputted to said noninverting input terminal; (d) an A/D converter for converting an output voltage from said operational amplifier to digital data; (e) mode-signal generating means for sending a mode signal to a below-mentioned microcomputer; and (f) the microcomputer including; (i) judging means for judging whether the air conditioner is in a normal control mode or an adjusting mode, on the basis of said mode signal from said mode-signal generating means, (ii) normal-control-mode executing means for outputting a control signal representative of a current air-conditioning state, to said display means and for outputting a control signal to said actuator means of said air conditioner on the basis of said digital data from said A/D converter when said normal-control-mode executing means receives a judgment signal from said judging means indicative of said normal control mode, and (iii) adjusting-mode executing means for outputting a control signal representative of the output voltage from said operational amplifier, to said display means, on the basis of said digital data from said A/D converter when said adjusting-mode executing means receives a judgment signal from said judging means indicative of said adjusting mode, said method comprising the steps of; (v) connecting a plurality of standard resistors respectively to said temperature-data input terminals; (w) outputting the mode signal from said mode-signal generating means, representative of said adjusting mode, to said microcomputer; (x) causing said display means to display said output voltage from said operational amplifier on the basis of said control signal from said microcomputer; and (y) adjusting said variable resistor of said reference-voltage generating means so as to bring the output voltage from said operational amplifier displayed on said display means, to a predetermined voltage.
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Specification