Measuring apparatus for digitally detecting analog measured variables

A measuring apparatus, comprising:

• a sensor element producing a sensor output signal proportional to a variable to be measured;
• an integrator connected to said sensor element that, beginning at a starting value, integrates the sensor output signal from said sensor element and outputs an integrator output signal;
• a comparator connected downstream of said integrator, said comparator comparing the integrator output signal with a threshold value and outputs a comparator output signal corresponding to a result of the comparison;
• a reset device connected downstream of said comparator and resetting said integrator to the starting value at specific times;
• and
• a time measuring device connected downstream of said comparator and measuring a time duration between the starting value appearing and the threshold value being exceeded, said time measuring device to output a time signal corresponding to the time duration as a measure of the variable obtained at said sensor element.

A measuring apparatus, comprising:

• a sensor element producing a sensor output signal proportional to a variable to be measured;
• an integrator connected to said sensor element that, beginning at a starting value, integrates the sensor output signal from said sensor element and outputs an integrator output signal, said integrator being reset at regular time intervals;
• a comparator connected downstream of said integrator, said comparator comparing the integrator output signal with a threshold value and outputs a comparator output signal corresponding to a result of the comparison;
• and
• a reset device connected downstream of said comparator and resetting said integrator to the starting value at specific times.

A measuring apparatus, comprising:

• a sensor element producing a sensor output signal proportional to a variable to be measured;
• an integrator connected to said sensor element that, beginning at a starting value, integrates the sensor output signal from said sensor element and outputs an integrator output signal;
• a comparator connected downstream of said integrator, said comparator comparing the integrator output signal with a threshold value and outputs a comparator output signal corresponding to a result of the comparison;
• and
• a reset device connected downstream of said comparator and resetting said integrator to the starting value at specific times, said reset device having a controlled switch connecting a reference voltage, corresponding to the starting value, to said integrator if the threshold value of said comparator is exceeded.

A measuring apparatus, comprising:

• a sensor element having a reverse-biased pn semiconductor junction for measuring temperature and producing a sensor output signal proportional to a variable to be measured;
• an integrator connected to said sensor element that, beginning at a starting value, integrates the sensor output signal from said sensor element and outputs an integrator output signal;
• a comparator connected downstream of said integrator, said comparator comparing the integrator output signal with a threshold value and outputs a comparator output signal corresponding to a result of the comparison;
• and
• a reset device connected downstream of said comparator and resetting said integrator to the starting value at specific times.

A measuring apparatus, comprising:

• a sensor element producing a sensor output signal proportional to a variable to be measured;
• an integrator connected to said sensor element that, beginning at a starting value, integrates the sensor output signal from said sensor element and outputs an integrator output signal;
• a comparator connected downstream of said integrator, said comparator comparing the integrator output signal with a threshold value and outputs a comparator output signal corresponding to a result of the comparison;
• and
• a reset device connected downstream of said comparator and resetting said integrator to the starting value at specific times;
• a time measuring device connected downstream of said comparator and measuring a time duration between the starting value appearing and the threshold value being exceeded, said time measuring device to output a time signal corresponding to the time duration as a measure of the variable obtained at said sensor element;
• and
• a microcomputers, at least one of said comparator, said time measuring device and said reset device being disposed in said microcomputer.

A measuring apparatus, comprising:

• a sensor element producing a sensor output signal proportional to a variable to be measured;
• an integrator connected to said sensor element that, beginning at a starting value, integrates the sensor output signal from said sensor element and outputs an integrator output signal;
• a comparator connected downstream of said integrator, said comparator comparing the integrator output signal with a threshold value and outputs a comparator output signal corresponding to a result of the comparison;
• and
• a reset device connected downstream of said comparator and resetting said integrator to the starting value at specific times;
• a time measuring device connected downstream of said comparator and measuring a time duration between the starting value appearing and the threshold value being exceeded, said time measuring device to output a time signal corresponding to the time duration as a measure of the variable obtained at said sensor element;
• and
• a microcontroller, at least one of said comparator, said time measuring device and said reset device being disposed in said microcontroller.