An occupancy sensor has three layers. The bottom layer contains two electrodes, and a resistive element between the electrodes. The middle layer is a spacer. The top layer is a third electrode, divided into two parts. When a person sits on the sensor, both parts of the third layer contact the resist
An occupancy sensor has three layers. The bottom layer contains two electrodes, and a resistive element between the electrodes. The middle layer is a spacer. The top layer is a third electrode, divided into two parts. When a person sits on the sensor, both parts of the third layer contact the resistive element. This causes current to flow through all of the electrodes. Accordingly, occupancy can be detected by measuring current flow through the electrodes. The device additionally provides heating via the resistive element. The sensor can be arranged in a vehicle seat.
대표청구항▼
1. A heating product comprising: a support;a sensor arranged on the support, the sensor comprising: i. a first electrode,ii. a second electrode,iii. a third electrode including a gap, the gap diving the third electrode into two parts,iv. a heater resistor, andv. a spacer; anda cover layer arranged o
1. A heating product comprising: a support;a sensor arranged on the support, the sensor comprising: i. a first electrode,ii. a second electrode,iii. a third electrode including a gap, the gap diving the third electrode into two parts,iv. a heater resistor, andv. a spacer; anda cover layer arranged on the sensor,wherein the first electrode, the second resistor, and the heater resistor are in contact with a same surface of the support and are arranged on a same plane,wherein the heater resistor is located in between, and in contact with, the first electrode and the second electrode,wherein the spacer is located above the first electrode and the second electrode, and is configured to separate the first electrode and the second electrode from the third electrode when the cover layer not subject to a mechanical load,wherein when the cover layer is subject to the mechanical load, the two parts of the third electrode contact the heater resistor causing a current flow through the first electrode, the second electrode, the third electrode, and the heater resistor, andwherein the heating product includes a device configured to detect a presence of the mechanical load on the cover layer by measuring the current flow through the heater resistor. 2. The heating product according to claim 1, wherein the heater resistor is an electrical conductor track that is provided as a coating on the support. 3. The heating product according to claim 1, wherein the heater resistor is an electrically conductive filament. 4. The heating product according to claim 1, wherein the heater resistor comprises a conductor track; and wherein the conductor track intermittently serves as a transducer. 5. The multifunction product according to claim 1, wherein the heating product comprises an identical second sensor, the first sensor is arranged at a first measuring point on the support that is subjected to the mechanical load and the identical second sensor is arranged at a second measuring point on the support that is not subjected to the mechanical load. 6. The multifunction product of claim 1, wherein the heating product is comprised of a plurality of heater resistors arranged electrically parallel to each other. 7. The multifunction product of claim 1, wherein the first electrode provides power to the heater resistor element. 8. The multifunction product of claim 1, wherein the support is formed flat and is air permeable. 9. A method of detecting a mechanical load, comprising: I. providing a multifunction product, the multifunction product comprising: a support; anda sensor arranged on the support, the sensor comprising: i. a first electrode,ii. a second electrode,iii. a third electrode including a gap, the gap diving the third electrode into two parts,iv. a heater resistor, andv. a spacer; anda cover layer arranged on the sensor,wherein the first electrode, the second resistor, and the heater resistor are in contact with a same surface of the support and are arranged on a same plane,wherein the heater resistor is located in between, and in contact with, the first electrode and the second electrode,wherein the spacer is located above the first electrode and the second electrode, and is configured to separate the first electrode and the second electrode from the third electrode when the cover layer not subject to a mechanical load,II. detecting the mechanical load on the cover layer when the mechanical load presses the two parts of the third electrode against the heater resistor and current flows through the first electrode, the second electrode, the third electrode, and the heater resistor, and measuring the current flow through the heater resistor. 10. The heating product of claim 1, wherein a padding layer is arranged directly above the cover layer. 11. The heating product of claim 1, wherein the heating product is arranged inside of a seat. 12. The heating product of claim 1, wherein the heating product is arranged inside of a vehicle. 13. The heating product of claim 1, wherein the third electrode transmits an electrical current to the heater resistor. 14. The heating product of claim 1, wherein the spacer is compressible. 15. The heating product of claim 1, wherein the sensor is one of a plurality of sensors, and the plurality of sensors are arranged inside of a vehicle seat, and wherein each of the plurality of sensors are individually capable of detecting the presence of the mechanical load. 16. The method of claim 9, wherein the multifunction product is arranged in a vehicle seat. 17. The method of claim 9, wherein the mechanical weight is the weight of a person. 18. The method of claim 9, wherein multiple multifunction products are arranged inside of a vehicle seat, and each of the multiple multifunction products are capable of detecting the presence of the mechanical load. 19. The method of claim 9, wherein the spacer is compressed when the mechanical load presses the two parts of the third electrode against the heater resistor. 20. The method of claim 9, wherein the support is formed flat and is air permeable.
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