Patent ID: 11944012
Assignee: ROBERT BOSCH GMBH
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A control unit for controlling an actuator, the actuator including a piezoelectric element, and a device to connect or not connect a load in parallel with the piezoelectric element to transmit the data, the control unit including devices configured to control the piezoelectric element, and further devices configured to detect the connection or non-connection of the load in parallel with the piezoelectric element, and to receive the data sent by the actuator;
wherein the control unit is configured to apply a first predetermined voltage difference to the piezoelectric element for controlling the piezoelectric element and a second predetermined voltage difference to the piezoelectric element for transmitting the data; and
wherein the second voltage difference is not large enough to drive the actuator.