A pressure-sensing integrated film sensor

Abstract

The utility model is suitable for sensor technical field provides a kind of pressure response integration film sensor, including substrate, lead-out circuit, conductive sensing paste and pressure response paste;Lead-out circuit, conductive sensing paste and pressure response paste are all covered on substrate by printing process, such integrated design can reduce the overall thickness of sensor, and reduce economic cost;Pressure response paste forms pressure zone on substrate, and according to the change of resistance value, the stress change under the static state of sensor is monitored quickly;Conductive sensing paste forms piezoelectric zone on substrate, and according to the change of voltage value, the stress change under the dynamic state of sensor is monitored quickly.

Description

Technical Field

[0001] This utility model belongs to the field of sensor technology, and in particular relates to an integrated pressure sensing thin film sensor. Background Technology

[0002] Existing car seats are equipped with separate heating pads and separate occupancy sensors. The heating pads enable the seat to be heated, and the occupancy sensors can detect whether the seat is occupied.

[0003] However, existing occupancy sensors in car seats typically output a switch signal after force is applied, which cannot monitor the magnitude of the force applied to the occupancy, but can only detect the force applied to the occupancy, thus having certain limitations in use.

[0004] Therefore, in view of the above situation, there is an urgent need to develop an integrated pressure sensing thin-film sensor to overcome the shortcomings in current practical applications. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model embodiment is to provide an integrated pressure sensing thin film sensor to solve the problems in the background technology mentioned above.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A pressure-sensing integrated thin-film sensor includes a substrate, on which an output circuit, a conductive sensing paste, and a pressure-sensing paste are respectively coated.

[0008] Both the conductive sensing paste and the pressure sensing paste are distributed on the substrate and electrically connected to the output circuit. The conductive sensing paste forms a piezoelectric region on the substrate, which is used to monitor the force changes of the sensor under dynamic conditions.

[0009] The pressure-sensing slurry forms a pressure zone on the substrate, which is used to monitor the force changes of the sensor under static conditions.

[0010] As a further technical solution of this utility model, the substrate is a flexible film.

[0011] As a further technical solution of this utility model, the output circuit, conductive sensing paste and pressure sensing paste are all mounted on the substrate by printing.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The output circuit, conductive sensing paste, and pressure sensing paste are all coated onto the substrate through a printing process. This integrated design can reduce the overall thickness of the sensor and reduce economic costs.

[0014] Pressure-sensitive paste forms a pressure zone on the substrate. By pressing or tapping, it can output a corresponding resistance signal, thereby quickly monitoring the force change of the sensor under static conditions based on the change in resistance value. Conductive-sensitive paste forms a piezoelectric zone on the substrate. By pressing or tapping, it can output a corresponding piezoelectric signal, thereby quickly monitoring the force change of the sensor under dynamic conditions based on the change in voltage value. Thus, based on the force condition of the seat, it can provide the vehicle control system with information on the user's posture and other statuses.

[0015] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the integrated pressure sensing thin-film sensor provided in an embodiment of the present invention.

[0017] Reference numerals: 1-substrate, 2-pressure zone, 3-piezoelectric zone, 4-outlet circuit. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0020] like Figure 1 As shown, an integrated pressure sensing thin-film sensor provided as an embodiment of the present invention includes a substrate 1, on which an output circuit 4, a conductive sensing paste, and a pressure sensing paste are respectively covered.

[0021] Both the conductive sensing paste and the pressure sensing paste are distributed on the substrate 1 and electrically connected to the output circuit 4. The conductive sensing paste forms a piezoelectric region 3 on the substrate 1, which can output a corresponding piezoelectric signal by pressing or tapping, thereby quickly monitoring the dynamic force change of the sensor based on the change in voltage value. The pressure sensing paste forms a pressure region 2 on the substrate 1, which can output a corresponding resistance signal by pressing or tapping, thereby quickly monitoring the static force change of the sensor based on the change in resistance value. Thus, based on the force condition of the seat, the vehicle control system can detect the user's posture and other status conditions of the seat. Moreover, the integrated design can reduce its economic cost.

[0022] like Figure 1 As shown, in a preferred embodiment of the present invention, the substrate 1 is preferably a flexible film, which not only has excellent high and low temperature resistance, but also has ultra-thin thickness and high tensile strength, can closely fit the curved shape of the seat, and can withstand long-term compression, friction and other mechanical stresses.

[0023] like Figure 1 As shown, in a preferred embodiment of this utility model, the output circuit 4, the conductive sensing paste and the pressure sensing paste are preferably mounted on the substrate 1 by printing. The printing method can be screen printing or inkjet printing to ensure the consistency of circuit conductivity and sensing sensitivity.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pressure-sensing integrated thin-film sensor, characterized in that, The substrate includes a substrate covered with an outgoing circuit, a conductive sensing paste, and a pressure sensing paste, respectively. Both the conductive sensing paste and the pressure sensing paste are distributed on the substrate and electrically connected to the output circuit. The conductive sensing paste forms a piezoelectric region on the substrate, which is used to monitor the force changes of the sensor under dynamic conditions. The pressure-sensing slurry forms a pressure zone on the substrate, which is used to monitor the force changes of the sensor under static conditions.

2. The pressure-sensing integrated thin-film sensor according to claim 1, characterized in that, The substrate is a flexible film.

3. The pressure-sensing integrated thin-film sensor according to claim 1, characterized in that, The output circuit, conductive sensing paste, and pressure sensing paste are all mounted on the substrate by printing.

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