Control device for an optical sensor
AssigneeRobert Bosch GmbH
InventorNorbert Hog
Life of this patent
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Abstract
A control device for an optical sensor including an optical transmitter is used to prolong the service life of the optical transmitter, preferably a light-emitting diode, and to adjust the service life of the electronic components and, thus, prolong the service life of the optical sensor. This is achieved in that the transmitter power is able to be switched over between full power and reduced power as a function of a measuring value from the sensor.
Claims27
A control device for an optical sensor, the optical sensor generating a measuring signal and including an optical transmitter, the control device comprising:
- an arrangement switching a power of the optical transmitter between a full power and a reduced power as a function of the measuring signal,
- wherein, when a pane is dry and only after a predetermined time period, the optical transmitter operates at the reduced power as a function of the measuring signal.
A control device for an optical sensor, the optical sensor generating a measuring signal and including an optical transmitter, the control device comprising:
- an arrangement switching a power of the optical transmitter between a full power and a reduced power as a function of the measuring signal,
- wherein, when moisture is detected, the optical transmitter operates at the full power.
A control device for an optical sensor, the optical sensor generating a measuring signal and including an optical transmitter, the control device comprising:
- an arrangement switching a power of the optical transmitter between a full power and a reduced power as a function of the measuring signal wherein a frequency of the transmitter power is superimposable on a predetermined frequency when the control device operates using one of the full power and the reduced power.
A windshield-wiper control device, comprising:
- a wiper motor driving a windshield wiper;
- a first control device controlling the wiper motor;
- and
- a second control device coupled to an optical sensor, the optical sensor generating a measuring signal and including an optical transmitter,
- wherein the second control device switches a power of the optical transmitter between a full power and a reduced power as a function of the measuring signal,
- wherein, when a pane is dry and only after a predetermined time period, the optical transmitter operates at the reduced sower as a function of the measuring signal.
A windshield-wiper control device, comprising:
- a wiper motor driving a windshield wiper;
- a first control device controlling the wiper motor;
- and
- a second control device coupled to an optical sensor, the optical sensor generating a measuring signal and including an optical transmitter,
- wherein the second control device switches a power of the optical transmitter between a full power and a reduced power as a function of the measuring signal, and
- wherein, when moisture is detected, the optical transmitter operates at the full power.
A windshield-wiper control device, comprising:
- a wiper motor driving a windshield wiper;
- a first control device controlling the wiper motor;
- and
- a second control device coupled to an optical sensor, the optical sensor generating a measuring signal and including an optical transmitter,
- wherein the second control device switches a power of the optical transmitter between a full power and a reduced power as a function of the measuring signal, and
- wherein a frequency of the transmitter power is superimposable on a predetermined frequency when the second control device operates using one of the full power and the reduced power.
Dependencies are inferred from the claim text.