Pressure sensor and pressure acquisition system

Abstract

The utility model belongs to the technical field of sensors, and provides a pressure sensor and a pressure acquisition system, a plurality of pressure sensing points, a plurality of signal input parts and a plurality of signal output parts are arranged on a base material, and the pressure sensing points are configured to change at least one electrical parameter based on the magnitude of the applied pressure. The signal input part is connected with the pressure sensing points to transmit electric signals, the signal output part is connected with the pressure sensing points to output electric signals, the plurality of pressure sensing points are at least distributed on two sensing areas on the base material, and at least one pressure sensing point in the at least two sensing areas shares at least one signal input part or signal output part. Therefore, the balance of the number of the signal input parts and the number of the signal output parts can be realized under the condition of various permutation and combination of the pressure sensing points, the adaptation degree between the collector and the pressure sensor and the utilization efficiency of the signal input parts and the signal output parts are improved, and the waste of butt joint ports is also avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of sensors, and particularly relates to a pressure sensor and a pressure collection system. BACKGROUND

[0002] At present, in order to realize detection of pressure distribution on the surface of an object, a plurality of pressure detection units are usually integrated on the same substrate, and then these pressure detection units are connected by signal transmission wires to output pressure signals. When the plurality of pressure detection units are integrated on the same substrate, if there is no special design requirement, these pressure detection units are usually arranged in an array to form a uniform pressure detection surface. The pressure detection units are usually connected with a signal input wire and a signal output wire to transmit corresponding electrical signals. These pressure detection units transmit electrical signals through corresponding signal input wires and signal output wires, and these signal input wires or signal output wires are collected to a docking port, which is connected with a collector through the docking port. The collector acquires electrical signals, such as voltage signals, transmitted from each signal output wire.

[0003] However, in order to facilitate processing and manufacturing, the number of docking ports on the collector for docking with the signal output wires and the signal input wires is usually consistent. However, when the number of signal input wires is inconsistent with the number of signal output wires, such as when the number of signal output wires is much larger than the number of signal input wires, the number of docking ports on the collector for docking with the signal input wires is much larger than the number of signal input wires. As a result, the docking ports are wasted. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide a pressure sensor and a pressure collection system, and aims to solve the problem of waste of docking ports of the current sensor.

[0005] In order to solve the above technical problem, the application provides a pressure sensor, which comprises:

[0006] a substrate;

[0007] a plurality of pressure sensing points, a plurality of signal input parts and a plurality of signal output parts arranged on the substrate, the signal input part being connected with the pressure sensing point to transmit an electrical signal, and the signal output part being connected with the pressure sensing point to output an electrical signal; the pressure sensing point being configured to change at least one electrical parameter based on the magnitude of the applied pressure;

[0008] The plurality of pressure sensing points are distributed in at least two sensing areas on the substrate, and at least one pressure sensing point in at least two sensing areas shares at least one signal input part and / or signal output part.

[0009] In the technical solution of the embodiment of the application, at least two sensing areas are arranged on the substrate, each of the sensing areas includes a plurality of pressure sensing points, the pressure sensing points are configured to change at least one electrical parameter based on the magnitude of the applied pressure, at least one pressure sensing point in each of the sensing areas shares one signal input part and / or one signal output part, the corresponding electrical signals generated by the pressure sensing points under the applied pressure can be output to the outside through the signal output part by multiplexing part of the signal input parts or the signal output parts, the balance between the number of the signal input parts and the signal output parts can be achieved in the case of various arrangement combinations of the pressure sensing points, the adaptation between the collector and the pressure sensor and the utilization efficiency of the signal input parts and the signal output parts are improved, and the waste of the docking ports is avoided.

[0010] In some embodiments, the pressure sensing points in the sensing area are arranged in an M*N matrix array, where M and N are positive integers not less than 2.

[0011] In the technical solution of the embodiment of the application, the pressure sensing points in each sensing area are arranged in an array, in the case of unequal number of rows and columns, the signal input / output parts are adjusted by making the pressure sensing points in different columns / rows share one signal input / output part, part of the signal input parts or the signal output parts are multiplexed, the corresponding electrical signals generated by the pressure sensing points under the applied pressure are output to the outside through the signal output part, the balance between the number of the signal input parts and the signal output parts can be achieved in the case of various arrangement combinations of the pressure sensing points, the adaptation between the collector and the pressure sensor and the utilization efficiency of the signal input parts and the signal output parts are improved, and the waste of the docking ports is avoided.

[0012] In some embodiments, one column of the pressure sensing points in at least one sensing area shares one signal input part or one signal output part with one column of the pressure sensing points in another sensing area; or

[0013] One row of the pressure sensing points in at least one sensing area shares one signal input part or one signal output part with one row of the pressure sensing points in another sensing area.

[0014] In the technical solution of the embodiment of the present application, the pressure sensing points in the sensing area are arranged in an array, when the pressure sensing points in the same row share one signal input part, the pressure sensing points in the same column share one signal output part; when the pressure sensing points in the same row share one signal output part, the pressure sensing points in the same column share one signal input part. By multiplexing part of the signal input parts or signal output parts, the corresponding electrical signals generated by the pressure sensing points under the applied pressure are output to the outside through the signal output part, so that the balance of the number of signal input parts and signal output parts can be achieved in the case of various arrangement combinations of the pressure sensing points, the adaptation between the collector and the pressure sensor is improved, and the utilization efficiency of the signal input parts and the signal output parts is also improved, and the waste of the docking ports is also avoided.

[0015] In some embodiments, N>M, the pressure sensing points arranged in the same row in each sensing area share one signal output part; or

[0016] N>M, the pressure sensing points in one column in at least one sensing area share one signal input part with the pressure sensing points in one column in another sensing area.

[0017] In some embodiments, N

[0018] N

[0019] In some embodiments, the plurality of pressure sensing points share one signal input part or signal output part in series or in parallel.

[0020] In some embodiments, the pressure sensing point comprises a pressure sensing material layer and a pressure sensing electrode, the pressure sensing electrode is arranged on the surface of the substrate, and the sensing material layer is fixed on the substrate to cover the pressure sensing electrode.

[0021] In some embodiments, the signal input part comprises a signal input lead and a signal input docking end foot;

[0022] The signal output part comprises a signal output lead and a signal output docking end foot, and the signal input docking end foot and the signal output docking end foot are arranged on the same side of the substrate.

[0023] In some embodiments, the substrate is provided with a through hole, the signal output lead passes through the corresponding through hole to connect the pressure sensing point and the signal output docking end foot; and / or

[0024] The signal input lead wire passes through the corresponding through hole to connect the pressure sensing point and the signal input interface.

[0025] The second aspect of the embodiments of the present application further provides a pressure acquisition system, comprising the pressure sensor according to any one of the above embodiments.

[0026] In some embodiments, the pressure acquisition system further comprises an acquisition device and a display device.

[0027] The acquisition device is connected to the pressure sensor to input an electrical signal to the pressure sensing point through the signal input part and to acquire an electrical signal fed back by the pressure sensing point through the signal output part. The acquisition device is in communication connection with the display device storing the calibration information of the pressure sensing sheet, and the display device displays the pressure distribution information according to a set display rule.

[0028] In some embodiments, the pressure distribution shape displayed by the display device is the same as the distribution shape of the pressure sensing points on the substrate.

[0029] The embodiments of the present application provide a pressure sensor and a pressure acquisition system. In the pressure sensor, at least two sensing areas are arranged on a substrate, each sensing area including a plurality of pressure sensing points, and each pressure sensing point is configured to change at least one electrical parameter based on the magnitude of the applied pressure. By arranging at least one pressure sensing point in at least two sensing areas to share one signal input part and / or one signal output part, the corresponding electrical signal generated by the pressure sensing points under the applied pressure can be output to the outside through the signal output part by multiplexing part of the signal input part or the signal output part. In the case of various arrangement combinations of the pressure sensing points, the balance of the number of signal input parts and signal output parts can be achieved, the adaptation between the acquisition device and the pressure sensor is improved, the utilization efficiency of the signal input part and the signal output part is improved, and the waste of the interface port is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0031] Figure 1 A schematic diagram of a pressure sensor according to an embodiment of the present application;

[0032] Figure 2 A connection diagram of a signal input part and a signal output part and a pressure sensing point in a pressure sensor according to an embodiment of the present application;

[0033] Figure 3 A schematic diagram of another pressure sensor provided in an embodiment of this application;

[0034] Figure 4 for Figure 2 The front side of the substrate of the pressure sensor shown;

[0035] Figure 5 for Figure 2 The back side of the substrate of the pressure sensor shown;

[0036] Figure 6 and Figure 7 A schematic diagram showing a through hole provided on a substrate 100 according to an embodiment of this application;

[0037] Figure 8 A schematic diagram of the pressure sensing points provided in the embodiments of this application;

[0038] Figure 9 This is a schematic diagram of a pressure acquisition system provided in an embodiment of this application. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0040] To facilitate manufacturing, the number of connection ports on the data acquisition unit for connecting to signal output and signal input wires is usually the same. However, when the number of signal input and signal output wires is different, such as when the number of signal output wires is much greater than the number of signal input wires, the number of connection ports on the data acquisition unit for connecting to signal input wires will be much greater than the number of signal input wires, which will result in a waste of connection ports.

[0041] To address the aforementioned technical problems, this application provides a pressure sensor, see [link to relevant documentation]. Figure 1 As shown, the pressure sensor 310 in this embodiment includes: a substrate 100, a plurality of pressure sensing points 111 disposed on the substrate 100, a plurality of signal input units 210 and a plurality of signal output units 220. The signal input units 210 are connected to the pressure sensing points 111 to transmit electrical signals, and the signal output units 220 are connected to the pressure sensing points 111 to output electrical signals. The pressure sensing points 111 are configured to change at least one electrical parameter based on the magnitude of the applied pressure. The plurality of pressure sensing points 111 are distributed in at least two sensing regions 110 on the substrate 100, and at least one pressure sensing point 111 in the two sensing regions 110 shares a signal input unit 210 or a signal output unit 220.

[0042] It can be understood that, in the embodiment, by distributing the pressure sensing points 111 on the substrate 100 in at least two sensing areas 110, by setting at least one pressure sensing point 111 in each of the two sensing areas 110 to share one signal input part 210 or signal output part 220, by multiplexing the signal input part 210 or signal output part 220, the balance of the number of signal input parts 210 and signal output parts 220 can be achieved in the case of various arrangement combinations of the pressure sensing points 111, the adaptability between the collector and the pressure sensor 310 is improved, and the utilization efficiency of the signal input part 210 and the signal output part 220 is also improved, and the waste of the interface port is also avoided.

[0043] It should be understood that, for the convenience of description, in the present application, the part connected with the pressure sensing point 111 to transmit the electrical signal is referred to as the signal input part 210, and the part connected with the pressure sensing point 111 to output the electrical signal is referred to as the signal output part 220, and the names of the signal input part 210 and the signal output part 220 are only for illustration and do not limit. That is, the electrical signal can also be transmitted through the signal output part 220, and the electrical signal can also be obtained through the signal input part 210.

[0044] The present application does not specifically limit the definition of the sensing area 110 on the pressure sensor, and the plurality of dispersed pressure sensing points 111 on the pressure sensor can be divided into different sensing areas 110, or the pressure sensing array composed of continuous pressure sensing points 111 can be divided into a plurality of sensing areas 110. Figure 1 As shown in FIG. 6, Figure 1 A scheme for dividing the pressure sensing array composed of continuous pressure sensing points 111 into two sensing areas 110 is shown.

[0045] The present application does not specifically limit the number of sensing areas 110 provided on the pressure sensor, and at least two sensing areas 110 can be provided on the pressure sensor, and the pressure sensor can be provided with three sensing areas 110, or four sensing areas 110, or five sensing areas 110, etc. according to specific use requirements.

[0046] In some embodiments, the pressure sensing points 111 within each sensing region 110 of the pressure sensor are arranged in an array of the same type. Each sensing region 110 has a string of pressure sensing points arranged in the same way, and all pressure sensing points 111 in a string of pressure sensing points within at least one sensing region 110 share a signal input section 210 or a signal output section 220 with all pressure sensing points 111 in a string of pressure sensing points within another sensing region 110. This application does not specifically limit the array arrangement of the pressure sensing points 111 within the sensing region 110. The pressure sensing points 111 within each sensing region 110 of the pressure sensor can be arranged in a circular radial array, a square row-column array, or other shapes, as long as the pressure sensing points 111 within the sensing region 110 have a certain arrangement pattern. Understandably, when the pressure sensing points 111 in each sensing area 110 of the pressure sensor are arranged in the same type of array, there are strings of pressure sensing points 111 arranged in the same way between each sensing area 110. Since these strings of pressure sensing points 111 are arranged in the same way, when the strings of pressure sensing points 111 between each sensing area 110 share a signal input section 210 or a signal output section 220, it is possible to further avoid confusion in the pressure display position on other electronic devices caused by the pressure sensing points 111 sharing a signal input section 210 or a signal output section 220.

[0047] In some embodiments, the pressure sensing points 111 within the sensing area 110 are arranged in an M×N row and column array, where M and N are positive integers not less than 2.

[0048] As an implementation, the pressure sensing points 111 in each sensing area 110 are arranged in an array, and the sensing area 110 has M rows and N columns of pressure sensing points 111, and the values of M and N can be set according to application requirements. The number of signal input parts 210 or signal output parts 220 can be adjusted by allowing different columns of pressure sensing points 111 or different rows of pressure sensing points 111 to share one signal input part 210 or one signal output part 220. The multiplexing of the signal input part 210 or the signal output part 220 outputs the corresponding electrical signal generated by the pressure sensing point 111 under the applied pressure to the outside through the signal output part 220. In the case of multiple arrangement combinations of pressure sensing points 111, the number of signal input parts 210 and signal output parts 220 can be balanced, the adaptability between the collector 320 and the pressure sensor is improved, and the utilization efficiency of the signal input part 210 and the signal output part 220 is also improved. In some embodiments, one column of pressure sensing points 111 in at least one sensing area 110 shares one signal input part 210 or one signal output part 220 with one column of pressure sensing points 111 in another sensing area 110.

[0049] In some embodiments, one row of pressure sensing points 111 in at least one sensing area 110 shares one signal input part 210 or one signal output part 220 with one row of pressure sensing points 111 in another sensing area 110.

[0050] Please refer to Figure 1 and Figure 2 , Figure 1 and Figure 2 A specific implementation is shown, and the pressure sensor has two sensing areas 110, and each of the two sensing areas 110 has 3 rows and 8 columns of pressure sensing points 111. It can be understood that if the pressure sensing points 111 in the same row in each sensing area 110 share one signal output part 220 and the pressure sensing points 111 in the same column share one signal input part 210, then 6 signal output parts 220 and 16 signal input parts 210 need to be provided on the pressure sensor. In this embodiment, the pressure sensing points 111 in the same row in each sensing area 110 share one signal output part 220, and the pressure sensing points 111 in the same column in one sensing area 110 share one signal input part 210 with the pressure sensing points 111 in the same column in another sensing area 110. Thus, only 6 signal output parts 220 and 8 signal input parts 210 are needed on the pressure sensor, further reducing the number of signal input parts 210, balancing the number of signal input parts 210 and signal output parts 220, and improving the adaptability between the collector 320 and the pressure sensor and the utilization efficiency of the signal input part 210 and the signal output part 220.

[0051] Please refer to Figure 3 , Figure 3 Another specific embodiment is shown, the pressure sensor has three sensing areas 110, each of which has 3 rows x 9 columns of pressure sensing points 111, 9 columns of pressure sensing points 111 of the 3 sensing areas 110 multiplex 9 signal input parts 210, 3 rows of pressure sensing points 111 of the 3 sensing areas correspond to 9 signal output parts 220 respectively, in this way, through multiplexing part of the signal input part 210, the balance of the number of signal input part 210 and signal output part 220 is realized, the adaptability between the collector 320 and the pressure sensor and the utilization efficiency of the signal input part 210 and the signal output part 220 are improved, and the waste of the docking port is also avoided.

[0052] In the embodiment of the present application, combined with Figure 2 It is shown that the pressure sensing points 111 in the sensing area 110 are arranged in an array, when the pressure sensing points 111 in the same row share one signal input part 210, the pressure sensing points 111 in the same column share one signal output part 220; when the pressure sensing points 111 in the same row share one signal output part 220, the pressure sensing points 111 in the same column share one signal input part 210, through multiplexing part of the signal input part 210 or the signal output part 220, the corresponding electric signal generated by the pressure sensing points 111 under the applied pressure is output to the outside through the signal output part 220, the balance of the number of signal input part 210 and signal output part 220 can be realized under the condition of various arrangement combinations of the pressure sensing points 111, the adaptability between the collector 320 and the pressure sensor and the utilization efficiency of the signal input part 210 and the signal output part 220 are improved, and the waste of the docking port is also avoided.

[0053] In some embodiments, the pressure sensing points 111 in each sensing area 110 are arranged in an M x N row-column array, that is, each sensing area 110 has M rows of pressure sensing points 111 and N columns of pressure sensing points 111, where M and N are positive integers not less than 2.

[0054] As a preferred, when M is less than N, N signal input units 210 are provided, and the N signal input units 210 are respectively connected to the pressure sensing points 111 of each sensing area 110. Among them, the pressure sensing points 111 in the same column in the sensing area 110 are connected to the same signal input unit 210, and the pressure sensing points 111 in different columns are respectively connected to different signal input units 210. It can be understood that the above-mentioned embodiment can make the N signal input units 210 correspond to the pressure sensing points 111 in different columns of the same sensing area 110, and any signal input unit 210 is connected to the pressure sensing points 111 in one column of each sensing area 110, so that the pressure sensing points 111 in the same column in different sensing areas 110 share one signal input unit 210, thereby balancing the number of signal input units 210 and signal output units 220 by multiplexing part of the signal input units 210, improving the adaptability between the collector 320 and the pressure sensor, and improving the utilization efficiency of the signal input units 210 and the signal output units 220, and avoiding the waste of the docking port.

[0055] As a preferred, when M is greater than N, M signal output units 220 are provided, and the M signal output units 220 are respectively connected to the pressure sensing points 111 of each sensing area 110. Among them, the pressure sensing points 111 in the same row in the sensing area 110 are connected to the same signal output unit 220, and the pressure sensing points 111 in different rows are respectively connected to different signal output units 220. It can be understood that the above-mentioned embodiment can make the M signal output units 220 correspond to the pressure sensing points 111 in different rows of the same sensing area 110, and any signal output unit 220 is connected to the pressure sensing points 111 in one row of each sensing area 110, so that the pressure sensing points 111 in the same row in different sensing areas 110 share one signal output unit 220, thereby balancing the number of signal input units 210 and signal output units 220 by multiplexing part of the signal output units 220, improving the adaptability between the collector 320 and the pressure sensor, and improving the utilization efficiency of the signal input units 210 and the signal output units 220, and avoiding the waste of the docking port.

[0056] In some embodiments, a plurality of pressure sensing points 111 share one signal input unit 210 in series or in parallel, or a plurality of pressure sensing points 111 share one signal output unit 220 in series or in parallel.

[0057] Figure 4 The front surface of the substrate 100 of the pressure sensor shown in Figure 2 The front surface of the substrate 100 of the pressure sensor shown in Figure 5 The back surface of the substrate 100 of the pressure sensor shown in Figure 2 The back surface of the substrate 100 of the pressure sensor shown in Figure 2 , Figure 4 And Figure 5As shown, in some embodiments, the substrate 100 is provided with through holes, the signal lines between adjacent sensing areas 110 can pass through the through holes to the back of the substrate 100, thereby realizing the connection between adjacent sensing areas 110, and the connection between the sensing areas 110 and the signal output lead 221 can also be connected via the through holes. In this way, the intersection between the signal lines can be avoided.

[0058] As an implementation, the signal input part 210 includes a signal input lead 211 and a signal input butt pin 212, and the signal output part 220 includes a signal output lead 221 and a signal output butt pin 222. The signal input butt pin 212 and the signal output butt pin 222 are arranged on the same side of the substrate 100. The substrate 100 is further provided with through holes, the signal input lead 211 passes through the corresponding through hole to connect the pressure sensing point 111 and the signal input butt pin 212, and / or the signal output lead 221 passes through the corresponding through hole to connect the pressure sensing point 111 and the signal output butt pin 222.

[0059] As shown, the signal input lead 211 passes through the corresponding through hole to connect the pressure sensing point 111 and the signal input butt pin 212. Figure 6 As shown, the signal output lead 221 passes through the corresponding through hole to connect the pressure sensing point 111 and the signal output butt pin 222.

[0060] Figure 7

[0061] In the present embodiment, when multiple pressure sensing points 111 in a sensing area 110 share a signal input part 210 or a signal output part 220 with multiple pressure sensing points 111 in another sensing area 110, line intersections between the signal input lead 211 and the signal output lead 221 are prone to occur. In order to avoid the line conduction caused by the intersection, it is necessary to avoid these intersection points by physical isolation. The present application divides the signal input lead 211 and the signal output lead 221 that generate intersections on different surfaces of the substrate 100 by providing through holes on the substrate 100.

[0062] In the present embodiment, the pressure sensing point 111 is configured to change at least one electrical parameter based on the size of the applied pressure, thereby changing the electrical parameter of the electrical signal input by the signal input part 210, and the generated corresponding electrical signal is output to the signal output part 220.

[0063] In some embodiments, the pressure sensing point 111 includes a pressure sensing material layer and a pressure sensing electrode, the pressure sensing electrode is arranged on the surface of the substrate 100, and the sensing material layer is fixed on the substrate 100 to cover the pressure sensing electrode.

[0064] As a feasible implementation, in combination with​​Figure 8 As shown, the pressure sensing point 111 includes a pressure sensing material layer 102 and a pressure sensing electrode 101, the pressure sensing electrode 101 is arranged on the surface of the substrate 100, and the sensing material layer 102 is fixed on the substrate 100 to cover the pressure sensing electrode 101. The pressure sensing point 111 is configured to change at least one electrical parameter based on the magnitude of the applied pressure. That is, when the pressure sensing point 111 is pressed, the contact area between the pressure sensing material layer 102 and the pressure sensing electrode 101 changes, which in turn causes the electrical parameter to change. As a possible implementation, the pressure sensing electrode 101 is an interdigital electrode.

[0065] The embodiments of the present application also provide a pressure acquisition system, as shown in Figure 9 As shown, the pressure acquisition system includes: the pressure sensor 310 according to any one of the above embodiments, an acquisition device 320, and a display device 330; the acquisition device 320 is connected to the pressure sensor 310 to input the electrical signal to the pressure sensing point 111 through the signal input part 210, and to obtain the electrical signal fed back by the pressure sensing point 111 through the signal output part 220. The acquisition device 320 is connected in communication with the display device 330 in which the calibration information of the pressure sensor 310 is stored, and the display device 330 displays the pressure distribution information according to the set display rule.

[0066] In some embodiments, the pressure distribution shape displayed by the display device 330 is the same as the distribution shape of the pressure sensing point 111 on the substrate 100 (for example, as shown in the first display area 331 and the second display area 332 in Figure 9 ).

[0067] The embodiments of the present application provide a pressure sensor and a pressure acquisition system. In the pressure sensor, at least two sensing areas 110 are arranged on the substrate 100, each sensing area 110 includes a plurality of pressure sensing points 111, and the pressure sensing point 111 is configured to change at least one electrical parameter based on the magnitude of the applied pressure. By arranging at least one pressure sensing point 111 in at least two sensing areas 110 to share one signal input part 210 and / or one signal output part 220, the corresponding electrical signal generated by the pressure sensing point 111 under the applied pressure can be output to the outside through the signal output part 220 by multiplexing part of the signal input part 210 or the signal output part 220. The balance of the number of signal input parts 210 and signal output parts 220 can be achieved in the case of various arrangement combinations of pressure sensing points 111, which improves the adaptability between the acquisition device 320 and the pressure sensor and the utilization efficiency of the signal input part 210 and the signal output part 220, and avoids the waste of the interface port.

[0068] In the present application, it can be understood that the description of row and column is determined based on the relative position of the pressure sensing point arrangement, which is only one way of orientation description. In other embodiments, row can correspond to column in the present application, and column can correspond to row in the present application. In the above embodiments, the description of each embodiment has its own emphasis. The parts not described or recorded in a certain embodiment can be referred to the relevant description of other embodiments.

[0069] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the same. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents. The modification or replacement does not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A pressure sensor, characterized in that, The pressure sensor includes: Substrate; Multiple pressure sensing points, multiple signal input sections, and multiple signal output sections are disposed on the substrate. The signal input sections are connected to the pressure sensing points to transmit electrical signals, and the signal output sections are connected to the pressure sensing points to output electrical signals. The pressure sensing points are configured to change at least one electrical parameter based on the magnitude of the applied pressure. The plurality of pressure sensing points are distributed in at least two sensing areas on the substrate, and at least one pressure sensing point in at least two sensing areas shares at least one of the signal input sections or the signal output sections.

2. The pressure sensor as described in claim 1, characterized in that, The pressure sensing points within the sensing area are arranged in an M×N row and column array, where M and N are positive integers not less than 2.

3. The pressure sensor as described in claim 2, characterized in that, At least one column of pressure sensing points within a sensing area shares a signal input section or a signal output section with a column of pressure sensing points within another sensing area; or At least one row of pressure sensing points in the sensing area shares a signal input section or a signal output section with another row of pressure sensing points in the sensing area.

4. The pressure sensor as described in claim 2, characterized in that, N > M, and the pressure sensing points arranged in the same row within each sensing area share one signal output unit; or N > M, and at least one column of pressure sensing points in the sensing area shares a signal input unit with a column of pressure sensing points in another sensing area.

5. The pressure sensor as described in claim 2, characterized in that, N < M, multiple pressure sensing points arranged in the same column within the sensing area share a single signal input unit; or N < M, at least one row of pressure sensing points in the sensing area shares a signal output unit with another row of pressure sensing points in the sensing area.

6. The pressure sensor according to any one of claims 1-5, characterized in that, Multiple pressure sensing points share a single signal input or signal output unit by means of series or parallel connection.

7. The pressure sensor according to any one of claims 1-5, characterized in that, The pressure sensing point includes a pressure sensing material layer and a pressure sensing electrode. The pressure sensing electrode is disposed on the surface of the substrate, and the sensing material layer is fixed on the substrate to cover the pressure sensing electrode.

8. The pressure sensor according to any one of claims 1-5, characterized in that, The signal input section includes a signal input wire and a signal input docking terminal; The signal output section includes a signal output wire and a signal output connector pin, wherein the signal input connector pin and the signal output connector pin are disposed on the same side of the substrate.

9. The pressure sensor as described in claim 8, characterized in that, The substrate is provided with through holes, and the signal output wire passes through the corresponding through holes to connect the pressure sensing point to the signal output terminal; and / or The signal input wire passes through the corresponding through hole to connect the pressure sensing point to the signal input terminal.

10. A pressure acquisition system, characterized in that, The pressure acquisition system includes: a pressure sensor, an acquisition unit, and a display device as described in any one of claims 1-9; The data acquisition unit is connected to the pressure sensor to input an electrical signal to the pressure sensing point through the signal input unit, and to obtain the electrical signal fed back by the pressure sensing point through the signal output unit. The data acquisition unit is communicatively connected to the display device that stores the calibration information of the pressure sensing element, and the display device displays the pressure distribution information according to the set display rules.

11. The pressure acquisition system as described in claim 10, characterized in that, The pressure distribution shape displayed by the display device is the same as the distribution shape of the pressure sensing points on the substrate.

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