High-density matrix type flexible foot pressure measuring instrument

Abstract

The utility model relates to the technical field of foot pressure measurement, in particular to a high-density matrix type flexible foot pressure measuring instrument which comprises a bottom plate and a cover plate, and the cover plate is fixedly installed on the bottom plate. The measuring mechanism is installed on the bottom plate and the cover plate, the measuring mechanism is connected with an upper computer, the upper computer and the measuring mechanism are detachable, and the measuring mechanism is used for measuring foot pressure and displaying the foot pressure on the upper computer; the handle is fixedly arranged on the bottom plate and is used for conveniently moving the measuring instrument; and the anti-skid holes are formed below the bottom plate and used for improving the friction force of the bottom plate. The high-density matrix type flexible foot pressure measuring instrument provided by the utility model not only can be used for measuring foot pressure, but also is convenient to carry, meanwhile, the anti-skid holes are formed in the bottom, so that the stability of the measuring instrument during foot pressure measurement is ensured, the operation is simple, and the practicability is strong.

Description

Technical Field

[0001] The utility model relates to the technical field of foot pressure measurement, in particular to a high-density matrix type flexible foot pressure measuring instrument. Background Art

[0002] Foot pressure measurement is achieved by deforming the resistor film under pressure, generating electrical signals on the upper and lower electrode surfaces of the resistor film. The voltage signals are obtained by high-speed scanning and acquisition, and then converted into high-speed and accurate AD. The data is uploaded to the host computer in real time, and the data is visualized and displayed dynamically after filtering. Each pressure-sensitive element on the resistor film can be deformed under external pressure, thereby changing the resistance value.

[0003] Although the existing foot pressure measuring instrument can measure foot pressure, there are still some problems. First, the current measuring instrument is not convenient to carry. Second, the bottom of the current measuring instrument is not anti-slip, and it is difficult to maintain stability during measurement. Therefore, a high-density matrix flexible foot pressure measuring instrument is needed to solve the above problems. Utility Model Content

[0004] The purpose of the embodiment of the utility model is to provide a high-density matrix flexible foot pressure measuring instrument, aiming to solve the following problems: the existing foot pressure measuring instrument is inconvenient to carry and has no anti-slip feature on the bottom, making it difficult to maintain stability during measurement.

[0005] The utility model is implemented as follows: a high-density matrix flexible foot pressure measuring instrument comprises: a base plate and a cover plate, wherein the cover plate is fixedly mounted on the base plate; a measuring mechanism, which is mounted on the base plate and the cover plate, wherein the measuring mechanism is connected to a host computer, wherein the host computer and the measuring mechanism are detachable, and the measuring mechanism is used to measure the foot pressure and display it on the host computer; a handle, which is fixedly mounted on the base plate and is used to facilitate the movement of the measuring instrument; and an anti-slip hole, which is provided under the base plate and is used to increase the friction of the base plate.

[0006] Preferably, the measuring mechanism includes: a flexible piezoresistive membrane, which is fixedly mounted on the cover plate and is used to measure the foot pressure, and the flexible piezoresistive membrane is connected to a circuit control module fixedly mounted on the base plate; a circuit connection port, which is welded on the circuit control module and is used to connect to the host computer.

[0007] Preferably, it also includes: a protective cover, which is fixedly mounted on the bottom plate, and the line control module is arranged in the protective cover, and the protective cover is used to protect the line control module.

[0008] The high-density matrix flexible foot pressure measuring instrument provided by the utility model can not only measure foot pressure, but also is convenient to carry. At the same time, anti-slip holes are arranged on the bottom to ensure the stability of the measuring instrument when measuring foot pressure. The operation is simple and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a front view schematic diagram of a high-density matrix flexible foot pressure measuring instrument.

[0010] Figure 2 This is a schematic diagram of the back side of a high-density matrix flexible foot pressure measuring instrument.

[0011] Figure 3 Schematic diagram of the data transmission process of the high-density matrix flexible foot pressure measuring instrument.

[0012] Figure 4 Schematic diagram of the measurement process of the high-density matrix flexible foot pressure measuring instrument.

[0013] In the attached drawings: 1-base plate, 2-cover plate, 3-measuring mechanism, 4-host computer, 5-handle, 6-anti-slip hole, 31-flexible piezoresistive membrane, 32-circuit control module, 33-circuit connection port, 7-protective cover. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and do not limit the utility model.

[0015] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0016] See also Figure 1 and Figure 2 The utility model provides a high-density matrix flexible foot pressure measuring instrument, and the high-density matrix flexible foot pressure measuring instrument includes:

[0017] A base plate 1 and a cover plate 2, wherein the cover plate 2 is fixedly mounted on the base plate 1; a measuring mechanism 3, which is mounted on the base plate 1 and the cover plate 2, wherein the measuring mechanism 3 is connected to a host computer 4, wherein the host computer 4 and the measuring mechanism 3 are detachable, and the measuring mechanism 3 is used for measuring the foot pressure and displaying it on the host computer 4; a handle 5, which is fixedly mounted on the base plate 1, for facilitating the movement of the measuring instrument; an anti-slip hole 6, which is provided below the base plate 1, for increasing the friction of the base plate 1.

[0018] When measuring foot pressure, first put the base plate 1 in a suitable position by pulling the handle 5, the anti-slip holes 6 can play an anti-slip effect, and then connect the host computer 4 and the measuring mechanism 3. After the connection is completed, step on the measuring mechanism 3 on the cover plate 2, the measuring mechanism 3 can be deformed and the resistance can change, and the measuring mechanism 3 can transmit the measured foot pressure data to the host computer 4 for display.

[0019] like Figure 1 As shown, as a preferred embodiment of the utility model, the measuring mechanism 3 includes: a flexible piezoresistive membrane 31, which is fixedly mounted on the cover plate 2 and is used to measure the foot pressure, and the flexible piezoresistive membrane 31 is connected to a circuit control module 32 fixedly mounted on the base plate 1; a circuit connection port 33, which is welded on the circuit control module 32 and is used to connect to the host computer 4.

[0020] The circuit connection port 33 is connected to the host computer 4 , and the foot steps on the flexible piezoresistive membrane 31 , and the flexible piezoresistive membrane 31 can transmit the measurement data from the circuit control module 32 to the host computer 4 , and the host computer 4 can display the data of the foot pressure measurement.

[0021] like Figure 1 As shown, as a preferred embodiment of the utility model, it also includes: a protective cover 7, which is fixedly installed on the base plate 1, and the line control module 32 is arranged in the protective cover 7, and the protective cover 7 is used to protect the line control module 32.

[0022] The protective cover 7 can protect the line control module 32 to prevent the line control module 32 from being damaged by interference from the external environment.

[0023] The measurement principle is as follows Figure 4 As shown, the flexible piezoresistive film 31 is deformed by pressure, and the upper and lower electrode surfaces of the flexible piezoresistive film 31 generate electrical signals. The voltage signals are obtained by high-speed scanning and acquisition of its 64 rows × 64 columns, and then high-speed and accurate AD conversion is used. The data is uploaded to the host computer 4 in real time, and the data is visualized and dynamically displayed after filtering. Under the action of external pressure deformation, the resistance value of each pressure-sensitive element on the flexible piezoresistive film 31 changes. First, the 64 columns of the pressure-sensitive element matrix are selected and scanned through the 8-way analog switch C0451×8 to connect it to the 5V high-precision power supply. Then, the 64 rows of the pressure-sensitive element matrix are selected through the combination circuit of the 4-way M5695×16 and the 8-way analog switch C451×8. After the row and column bit selection, the pressure-sensitive element AD sampling circuit forms a path. The high-precision AD Ref source increases the reference voltage for the AD conversion module. The AD conversion module collects data at a conversion speed of 12bit and 800k / s. The circuit connection port 33 is a USB interface, RS232 interface, RS485 interface, CAN interface, E-net interface, cascade interface, OLED interface and other interfaces. The data is uploaded to the host computer through the circuit connection port 33 to realize the collection of high-density matrix flexible pressure sensing data. The data transmission process is as follows Figure 3 As shown, in the main thread, by calling win32api, a serial port connection is created between the system and the data receiving device, a data transmission thread is established, and the receive data frame command is executed cyclically. The data transmission thread termination command is used as the end mark of data reception, and the high-precision data scanned by the system is transmitted to the host computer 4.

[0024] The utility model uploads the electrical signal generated by the deformation of the flexible piezoresistive film 31 to the host computer 4, and then the host computer 4 and the RBF neural network, which are data transmission transfer stations, process the data, present the spatial distribution of the plantar pressure on the mobile terminal, and finally compare it with the sample library of the measuring instrument to determine whether the user's plantar pressure is abnormal and possible diseases. The RDF neural network, which uses Gaussian function as the basis function and linear regression model to express the output-input relationship, achieves an algorithmic breakthrough. The utility model uses the highest specification 64×64 point sensor and a higher specification embedded STM32 chip under physical limit conditions.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-density matrix flexible foot pressure measuring instrument, comprising a base plate and a cover plate, characterized in that: The cover plate is fixedly mounted on the bottom plate; A measuring mechanism is installed on the bottom plate and the cover plate, the measuring mechanism is connected to a host computer, the host computer and the measuring mechanism are detachable, and the measuring mechanism is used to measure the foot pressure and display it on the host computer; A handle, which is fixedly mounted on the bottom plate and is used to facilitate the movement of the measuring instrument; The anti-skid holes are provided under the bottom plate to increase the friction of the bottom plate.

2. The high-density matrix flexible foot pressure measuring instrument according to claim 1, characterized in that: The measuring mechanism comprises: A flexible piezoresistive membrane, which is fixedly mounted on the cover plate and is used to measure the foot pressure, wherein the flexible piezoresistive membrane is connected to a circuit control module fixedly mounted on the bottom plate; The circuit connection port is welded on the circuit control module and is used to connect to the host computer.

3. The high-density matrix flexible foot pressure measuring instrument according to claim 2, characterized in that: Also includes: The protective cover is fixedly mounted on the bottom plate, the circuit control module is arranged in the protective cover, and the protective cover is used to protect the circuit control module.

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