公开(公告)号：US3820398A

公开(公告)日：1974-06-28

申请号：US34952773

申请日：1973-04-09

Applicant: HONEYWELL INC

Inventor： REKAI A

IPC: G01N27/12 ,  G01N25/56

CPC classification number: G01N27/122 ,  G01N27/121

Abstract: A system, for linearizing an output signal derived from a condition sensing device wherein the reciprocal of the sensor resistance, i.e., the conductance of the sensor, varies linearly according to the changes in the sensed condition, comprises an amplifier having two input terminals and an output terminal, a constant voltage source connected to one of said input terminals, a condition sensing device of the aforesaid nature connected to the other of the input terminals, and a feedback resistor connected between the output terminal and the input terminal to which is connected the condition sensing device such that the amplifier supplies a substantially constant voltage to the humidity sensing device and varies its output in accordance with the linear conductance change of the sensor.

公开(公告)号：US3828332A

公开(公告)日：1974-08-06

申请号：US26380572

申请日：1972-06-19

Applicant: HONEYWELL INC

Inventor： REKAI A

IPC: G01K7/24 ,  G08B21/00 ,  G05D23/00

CPC classification number: G01K7/24

Abstract: A temperature sensing switching circuit producing a high frequency output signal indicative of the ambient temperature of a temperature responsive resistance element, having a large change in resistance over a small change in temperature. The switching circuit controls a feedback heater for artifically heating the resistance element to produce the small change in temperature to reverse the operation of the switching circuit. The repeated switching of said switching circuit provides an output signal which has a frequency indicative of the ambient temperature.

Abstract translation: 一种温度感测开关电路，其产生指示温度响应电阻元件的环境温度的高频输出信号，其在小的温度变化下具有大的电阻变化。 开关电路控制用于对电阻元件进行加热的反馈加热器，以产生较小的温度变化，以逆转开关电路的工作。 所述开关电路的重复切换提供具有指示环境温度的频率的输出信号。

公开(公告)号：US3761018A

公开(公告)日：1973-09-25

申请号：US3761018D

申请日：1971-10-27

Applicant: HONEYWELL INC

Inventor： REKAI A

IPC: G05D23/24 ,  F25B29/00

CPC classification number: G05D23/24 ,  G05D23/1931 ,  Y10T307/469

Abstract: Electronic temperature control apparatus having a temperature responsive resistance space thermostat connected to an amplifier circuit for providing an output to control a modulating multistage controller adapted to control stages of heating and cooling apparatus. An outdoor temperature responsive resistance compensating thermostat is connected to the amplifier circuit for modifying the control effect of the space thermostat. The outdoor thermostat is connected through a first diode to provide compensation when the system is used for heating and through a second diode reversely connected when the system is used for cooling to selectively isolate the output of the outdoor thermostat from modifying the space thermostat control of either the heating and the cooling apparatus. Errors due to diode voltage drops and diode voltage drifts with temperature are eliminated.

Abstract translation: 电子温度控制装置具有连接到放大器电路的温度响应电阻空间恒温器，用于提供输出以控制适于控制加热和冷却装置的阶段的调制多级控制器。 室外温度响应电阻补偿恒温器连接到放大器电路，用于改变空间恒温器的控制效果。 室外恒温器通过第一个二极管连接，当系统用于加热时，通过反向连接的第二个二极管来提供补偿，当系统用于冷却时，选择性地隔离室外温控器的输出，从而改变空调恒温器控制 加热和冷却装置。 由于二极管电压下降导致的误差和二极管电压随温度而漂移。