초록 ▼

A motor control arrangement includes a device connected to positive power such that device drives motor upon connecting to negative power. A switch connects to positive power upon actuation. A first transistor connects to switch via controller and connects between device and negative power. First t

A motor control arrangement includes a device connected to positive power such that device drives motor upon connecting to negative power. A switch connects to positive power upon actuation. A first transistor connects to switch via controller and connects between device and negative power. First transistor turns on causing device to connect to negative power upon switch actuation while controller is operational. A second transistor connects to switch and connects between device and negative power when controller is malfunctioned. Second transistor turns on causing device to connect to negative power upon switch actuation while controller is malfunctioned. A sensor connects to negative power upon contact with water. A third transistor connects to switch and sensor such that its collector-emitter path is connected in parallel to device. Third transistor turns on to short-circuit device thereby preventing device from driving motor upon water contacting sensor while controller is malfunctioned and switch actuation is void.

대표청구항 ▼

What is claimed is: 1. An arrangement for controlling a power element associated with a motor used to adjust a motor vehicle unit, wherein the power element includes first and second inputs with the first input connectable to negative power and the second input connected to positive power, wherein

What is claimed is: 1. An arrangement for controlling a power element associated with a motor used to adjust a motor vehicle unit, wherein the power element includes first and second inputs with the first input connectable to negative power and the second input connected to positive power, wherein the power element drives the motor when the first input is connected to the negative power and the second input is connected to the positive power, the arrangement comprising: a switch which connects to the positive power upon manual actuation; a controller connected to the switch; a first transistor connected to the switch via the controller, the first transistor connected in series with the power element such that the first transistor is connected between the first power element input and the negative power, wherein the first transistor turns on causing the first power element input to connect to the negative power upon manual actuation of the switch while the controller is operational; a second transistor connected directly to the switch, the second transistor connected in series with the power element such that the second transistor is connected between the first power element input and the negative power when the controller is non-operational, wherein the second transistor turns on causing the first power element input to connect to the negative power upon manual actuation of the switch while the controller is non-operational; a water sensor which connects to the negative power upon contact with water; and a third transistor connected to the switch via a diode and connected to the water sensor, the third transistor connected in parallel with the power element such that the collector emitter path of the third transistor is connected in parallel to the power element inputs, wherein the third transistor turns on causing the power element to be short-circuited such that the power element is prevented from driving the motor upon water contacting the water sensor while the controller is non-operational and while actuation of the switch is void. 2. The arrangement of claim 1 further comprising: a fourth transistor connected to the controller, the fourth transistor connected in series between the second transistor and the negative power, wherein controller turns off the fourth transistor such that the first power element input is disconnected from the negative power via the second transistor while the controller is operational. 3. The arrangement of claim 2 wherein: the fourth transistor is connected to the positive power via a pull-up resistor, wherein the positive power connected to the fourth transistor causes the transistor to turn on while the controller is non-operational such that the second and fourth transistors are connected to the negative power causing the first power element input to be connected to the negative power. 4. The arrangement of claim 1 wherein: the power element includes an electromechanical relay connected between the power element inputs. 5. The arrangement of claim 1 wherein: the controller includes a micro-processor. 6. The arrangement of claim 1 wherein: the switch includes a pushbutton switch. 7. The arrangement of claim 1 wherein: each transistor is a npn bipolar transistor. 8. An arrangement for controlling a motor used to adjust a motor vehicle unit, the arrangement comprising: a power element having a first input connectable to negative power and a second input connected to positive power, wherein the power element drives the motor upon the first input being connected to the negative power; a switch which connects to the positive power upon manual actuation; a controller connected to the switch; a first transistor connected to the controller and connected in series with the power element such that the first transistor is connected between the first power element input and the negative power; wherein while the controller is functional and upon the controller being connected to the positive power via the switch, the controller turns on the first transistor causing the first power element input to connect to the negative power; a second transistor connected to the switch and connected in series with the power element such that the second transistor is connected between the first power element input and the negative power when the controller is non-functional; wherein while the controller is non-functional and upon the second transistor being connected to the positive power via the switch, the second transistor turns on causing the first power element input to connect to the negative power; a water sensor which connects to the negative power upon contact with water; and a third transistor connected to the switch and the water sensor and connected in parallel with the power element such that the collector emitter path of the third transistor is connected in parallel to the power element inputs; wherein while the controller is non-functional and while the switch is non-actuated and upon the third transistor being connected to the negative power via the water sensor, the third transistor turns on causing the power element to be short-circuited such that the power element is prevented from driving the motor. 9. The arrangement of claim 8 further comprising: a fourth transistor connected to the controller and connected in series with the second transistor such that the fourth transistor is connected between the second transistor and the negative power while the controller is functional, wherein the base terminal of the fourth transistor is connected via a pull-up resistor to the positive power and is connected via the controller to the negative power while the controller is functional. 10. The arrangement of claim 9 wherein: the base terminal of the first transistor is connected to the collector terminal of the fourth transistor. 11. The arrangement of claim 8 wherein: the power element includes an electromechanical relay between the power element inputs. 12. The arrangement of claim 8 wherein: the controller includes a micro-processor. 13. The arrangement of claim 8 wherein: the switch includes a pushbutton switch. 14. The arrangement of claim 8 wherein: each transistor is a npn bipolar transistor. 15. An electric circuit arrangement for controlling a motor used to adjust a motor vehicle unit, the arrangement comprising: a power element having a first input connectable to negative power and a second input connected to positive power, wherein the power element drives the motor when the first input is connected to the negative power; a controller having an input and an output; a switch having a first switch contact connected to the controller input and a second switch contact connected to the positive power, wherein upon manual actuation of the switch the switch contacts connect such that the first switch contact connects to the positive power; a first transistor having a base terminal connected to the controller output, an emitter terminal connected to the negative power, and a collector terminal connected to the first power element input; wherein while the controller is functional and upon the controller input being connected to the positive power via the switch, the controller outputs a control signal from the controller output to the base terminal of the first transistor to turn on the first transistor causing the first power element input to connect to the negative power; a second transistor having a base terminal connected to the first switch contact, an emitter terminal, and a collector terminal connected to the first power element input, wherein the emitter terminal of the second transistor is connected to the negative power while the controller is non-functional and is disconnected from the negative power while the controller is functional; wherein while the controller is non-functional and upon the base terminal of the second transistor being connected to the positive power via the switch, the second transistor turns on causing the first power element input to connect to the negative power; a water sensor having a first sensor contact connected to the negative power and a second sensor contact, wherein upon water contacting the water sensor the sensor contacts connect such that the second sensor contact connects to the negative power; and a third transistor having a base terminal connected to the first switch contact via a diode and a collector emitter path connected in parallel to the power element inputs, wherein the base terminal of the third transistor is connected to the second water sensor contact; wherein while the controller is non-functional and while the switch is non-actuated and upon the base terminal of the third transistor being connected to the negative power via the water sensor, the third transistor turns on causing the power element to be short-circuited such that the power element is prevented from driving the motor. 16. The arrangement of claim 15 further comprising: a fourth transistor having a collector terminal connected to the emitter terminal of the second transistor, an emitter terminal connected to the negative power, and a base terminal connected via a pull-up resistor to the positive power, wherein the base terminal of the fourth transistor is further connected via the controller to the negative power while the controller is functional. 17. The arrangement of claim 16 wherein: the base terminal of the first transistor is connected to the collector terminal of the fourth transistor. 18. The arrangement of claim 15 wherein: the power element includes an electromechanical relay between the power element inputs. 19. The arrangement of claim 15 wherein: the controller includes a micro-processor. 20. The arrangement of claim 15 wherein: the switch includes a pushbutton switch.