US 2020/0025842 A1 · Hall Sensor and Method for Operation of Such a Sensor

Abstract

A Hall sensor has a Hall sensor element, which has multiple connection points spaced apart from one another. A supply source serves for feeding an exciter current into the Hall sensor element and is connected to a first and a second connection point of the Hall sensor element. The Hall sensor has a first and a second comparison device. The first comparison device has a first input connected to a third connection point of the Hall sensor element, a second input connected to a reference signal generator for an upper reference value signal, and an output for a first comparison signal. The second comparison device has a third input connected to the third connection point, a fourth input connected to a reference signal generator for a lower reference value signal, and an output for a second comparison signal. The outputs are connected to an evaluation device for generating an error signal as a function of the first and second comparison signal.

Claims10

Dependent claims

A method for operation of a Hall sensor, which has the following steps:

a) providing a Hall sensor, which has a Hall sensor element having multiple connection points spaced apart from one another, and providing a current supply source or voltage supply source, which has supply connectors for output of a supply current or a supply voltage,
b) connecting a first connection point of the Hall sensor element to a first supply connector and connecting a second connection point of the Hall sensor element to a second supply connector, so as to apply the supply voltage to the Hall sensor element or to conduct the supply current through the Hall sensor element,
characterized by the following further steps:
c) providing a lower reference value and an upper reference value for a voltage applied at a third connection point of the Hall sensor element,
d) detecting a first voltage value for this voltage,
e) comparing the first voltage value with the lower reference value and the upper reference value,
f) generating an error signal as a function of the results of these comparisons.

4 more elements

A Hall sensor having a Hall sensor element that has multiple connection points spaced apart from one another, having a current supply source or voltage supply source that has a first and a second supply connector for output of a supply current or a supply voltage, wherein the first supply connector is connected or can be connected to a first connection point of the Hall sensor element, and the second supply connector is connected or can be connected to a second connection point of the Hall sensor element, so as to feed a current into the Hall sensor element, characterized in that the Hall sensor has a first comparison device, which has a first input connected to the third connection point, a second input connected to a reference signal generator for an upper reference value signal, and an output for a first comparison signal, that the Hall sensor has a second comparison device, which has a third input connected to the third connection point, a fourth input connected to a reference signal generator for a lower reference value signal, and an output for a second comparison signal, and that the outputs of the first and second comparison devices are connected to an evaluation device for generating an error signal that is a function of the first and second comparison signal.

Dependencies are inferred from the claim text.

Hall Sensor and Method for Operation of Such a Sensor

Life of this patent

Hall Sensor and Method for Operation of Such a Sensor

Life of this patent

Abstract

Claims10