초록 ▼

A temperature regulating control unit and method of making the same are provided, the unit comprising a RTD temperature sensor, a unit for applying electrical signals to the sensor, and a microcomputer for receiving digital signals from the sensor in relation to the temperature being sensed by the s

A temperature regulating control unit and method of making the same are provided, the unit comprising a RTD temperature sensor, a unit for applying electrical signals to the sensor, and a microcomputer for receiving digital signals from the sensor in relation to the temperature being sensed by the sensor, the unit for applying electrical signals to the sensor applying a varying voltage to the sensor.

대표청구항 ▼

In a method of operating a temperature regulating control unit comprising a RTD temperature sensor means and a microcomputer for receiving digital signals from said sensor means in relation to the temperature being sensed by said sensor means, the improvement comprising the step of applying a varyin

In a method of operating a temperature regulating control unit comprising a RTD temperature sensor means and a microcomputer for receiving digital signals from said sensor means in relation to the temperature being sensed by said sensor means, the improvement comprising the step of applying a varying voltage to said sensor means and comparing the resultant current level through said sensor means at certain values of aid voltage applied thereto with a fixed reference current level that has been predetermined as being the current level that would exist through said sensor means when that particular certain voltage is being applied to said sensor means while said sensor means would be sensing a particular certain temperature within a predetermined temperature range, the step of applying said varying voltage to said sensor means applying said varying voltage in an increasing manner from a starting low voltage toward a higher stopping voltage until a particular certain voltage between said starting voltage and said stopping voltage is applied to said sensor means that creates a current level through said sensor means that substantially equals said fixed reference current level whereby said microcomputer will receive said digital signal means in a manner to determine the actual temperature being sensed by said sensor means at that time and when said actual temperature is within said temperature range.