Joint pressure measuring method and device based on sensor array

Abstract

The invention provides a joint pressure measuring method, device and equipment based on a sensor array and a computer readable storage medium. The joint pressure measurement method based on the sensor array is applied to a joint pressure measurement device provided with a plurality of sensors arranged in an array, and comprises the following steps: in a joint pressure measurement process, acquiring distribution positions of the plurality of sensors, determining a distribution center point, and establishing a coordinate system by taking the point as an original point; acquiring an initial output value of the joint pressure measuring device; according to the compensation model, determining an error compensation amount by using the pressure point coordinates and the initial output value; and adding the initial output value and the error compensation amount to obtain a compensation output value. According to the embodiment of the invention, the precision of inter-joint chamber pressure measurement can be improved.

Description

Technical Field

[0001] This application belongs to the field of joint pressure testing, and particularly relates to a method, device, equipment, and computer-readable storage medium for measuring joint pressure based on a sensor array. Background Art

[0002] In the related art, with the aggravation of population aging, due to diseases such as degenerative osteoarthritis and rheumatoid arthritis, it will cause damage to knee joint cartilage or abnormal wear of the knee joint, resulting in ligament imbalance and limited flexion and extension activities of the lower limbs. In order to restore the function of the lower limbs, joint replacement surgery is required. Therefore, more and more joint replacement surgeries are performed in hospitals every year.

[0003] In joint replacement surgery, the intercompartmental pressure of the joint can effectively reflect the muscle tension, ligament tension, and synovial and soft tissue tension in the joint, etc., which is of great significance for intraoperative soft tissue balance regulation at all angles of the joint, judgment of the stability of artificial joints after surgery, and evaluation of the patient's rehabilitation situation.

[0004] Therefore, how to further improve the accuracy of intercompartmental pressure measurement has become a much-concerned issue. Summary of the Invention

[0005] The embodiments of this application provide a method, device, equipment, and computer-readable storage medium for measuring joint pressure based on a sensor array, which can improve the accuracy of intercompartmental pressure measurement.

[0006] In a first aspect, the embodiments of this application provide a method for measuring joint pressure based on a sensor array, which is applied to a joint pressure measurement device provided with a plurality of sensors arranged in an array, and includes:

[0007] During the joint pressure measurement process, obtain the distribution positions of the plurality of sensors, determine the distribution center point, and establish a coordinate system with this point as the origin;

[0008] Obtain the initial output value of the joint pressure measurement device;

[0009] According to the compensation model, use the pressure point coordinates and the initial output value to determine the error compensation amount;

[0010] Add the initial output value and the error compensation amount to obtain the compensated output value.

[0011] Optionally, obtaining the distribution positions of the plurality of sensors, determining the distribution center point, and establishing a coordinate system with this point as the origin includes:

[0012] Determine the specific spatial position information of each sensor in its array in the joint pressure measurement device by means of measurement or recording;

[0013] Calculate and analyze the position coordinates of all the acquired sensors to find the center point of these position coordinates;

[0014] Use the determined distribution center point as the origin of the coordinate system, and determine the directions of the coordinate axes according to the actual situation and measurement requirements.

[0015] Optionally, calculate and analyze the position coordinates of all the acquired sensors to find the center point of these position coordinates, including:

[0016] Calculate the average value of the position coordinates of all the sensors;

[0017] Sum up the abscissas and ordinates of the position coordinates of all the sensors respectively;

[0018] Divide by the total number of sensors, and the obtained average coordinate value is the coordinate of the distribution center point.

[0019] Optionally, obtain the initial output value of the joint pressure measurement device, including:

[0020] Ensure that the joint pressure measurement device is in a normal working state, and the connection between each sensor and the data acquisition system is stable without any faults or abnormalities;

[0021] When the joint is not under external force or in a natural relaxation state, start the data acquisition function of the joint pressure measurement device;

[0022] Multiple sensors inside the device start to work, real-time sense the pressure conditions at their respective positions, and convert the sensed pressure signals into corresponding electrical signals, which are transmitted to the data processing unit through the data transmission line;

[0023] After the data processing unit receives the electrical signals transmitted by each sensor, it performs preliminary analog-to-digital conversion on them, converts the analog signals into digital signals, and then records the pressure values corresponding to these digital signals according to the preset time interval or data acquisition rule. These just-recorded pressure values without any processing are the initial output values of the joint pressure measurement device.

[0024] Optionally, according to the compensation model, use the pressure point coordinates and the initial output value to determine the error compensation amount, including:

[0025] Obtain the pressure point coordinates and the initial output value;

[0026] Call the pre-established and stored compensation model, which is obtained by applying different pressures and pressures at different positions to the device during the compensation model test session of the joint pressure measurement device, acquiring a large amount of data and performing analysis and processing on it. It contains the corresponding relationships between the pressure point coordinates and the error compensation amount as well as between the initial output value and the error compensation amount;

[0027] Determine the error compensation amount.

[0028] Optionally, determining the error compensation amount includes:

[0029] According to the compensation model, input the obtained pressure point coordinates and the initial output value into the model respectively;

[0030] For the pressure point coordinates, the model will output the error compensation amount corresponding to the coordinates;

[0031] For the initial output value, the model will also output the corresponding error compensation amount.

[0032] Optionally, add the initial output value and the error compensation amount to obtain the compensated output value, including:

[0033] Ensure that the initial output value of the joint pressure measurement device and the corresponding error compensation amount determined according to the compensation model are obtained. These two data are the basis for the subsequent addition operation;

[0034] Add the initial output value and the error compensation amount, that is, add the error compensation amount to the initial output value;

[0035] After the addition operation, the obtained result is the compensated output value of the joint pressure measurement device.

[0036] In a second aspect, an embodiment of the present application provides a joint pressure measurement device based on a sensor array, including:

[0037] A distribution position acquisition module, configured to acquire the distribution positions of multiple sensors during the joint pressure measurement process, determine the distribution center point, and establish a coordinate system with this point as the origin;

[0038] An initial output value acquisition module, configured to acquire the initial output value of the joint pressure measurement device;

[0039] An error compensation amount determination module, configured to determine the error compensation amount according to the compensation model by using the pressure point coordinates and the initial output value;

[0040] A compensated output value acquisition module, configured to add the initial output value and the error compensation amount to obtain the compensated output value.

[0041] In a third aspect, an embodiment of the present application provides an electronic device, and the electronic device includes: a processor and a memory storing computer program instructions;

[0042] When the processor executes the computer program instructions, it implements the joint pressure measurement method based on the sensor array.

[0043] Fourthly, an embodiment of the present application provides a computer-readable storage medium, on which computer program instructions are stored. When the computer program instructions are executed by a processor, a joint pressure measurement method based on a sensor array is implemented. Description of the Drawings

[0044] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0045] Figure 1 is a schematic flowchart of a joint pressure measurement method based on a sensor array provided by an embodiment of the present application;

[0046] Figure 2 is a schematic structural diagram of a joint pressure measurement device based on a sensor array provided by an embodiment of the present application;

[0047] Figure 3 is a schematic structural diagram of an electronic device provided by an embodiment of the present application. Detailed Embodiments

[0048] The features and exemplary embodiments of each aspect of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the following will further describe the present application in detail in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than limiting the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present application by showing examples of the present application.

[0049] It should be noted that in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, the elements defined by the statement "including..." do not exclude the existence of additional identical elements in the process, method, article or device including the said elements.

[0050] To solve the problems of the prior art, embodiments of the present application provide a joint pressure measurement method, device, equipment and computer-readable storage medium based on a sensor array. First, the joint pressure measurement method based on the sensor array provided by the embodiments of the present application will be introduced below.

[0051] Figure 1 The flowchart of the joint pressure measurement method based on the sensor array provided by an embodiment of the present application is shown. As Figure 1 shown, the joint pressure measurement method based on the sensor array is applied to a joint pressure measurement device provided with a plurality of sensors arranged in an array, and includes:

[0052] S101. During the joint pressure measurement process, obtain the distribution positions of a plurality of sensors, determine the distribution center point, and establish a coordinate system with this point as the origin;

[0053] S102. Obtain the initial output value of the joint pressure measurement device;

[0054] S103. According to the compensation model, use the pressure point coordinates and the initial output value to determine the error compensation amount;

[0055] S104. Add the initial output value and the error compensation amount to obtain the compensated output value.

[0056] In one embodiment, obtaining the distribution positions of a plurality of sensors, determining the distribution center point, and establishing a coordinate system with this point as the origin includes:

[0057] Determine the specific spatial position information of each sensor in the joint pressure measurement device in its array by means of measurement or recording;

[0058] Calculate and analyze the position coordinates of all the obtained sensors to find the center point of these position coordinates;

[0059] Use the determined distribution center point as the origin of the coordinate system, and determine the direction of the coordinate axes according to the actual situation and measurement requirements.

[0060] In one embodiment, calculating and analyzing the position coordinates of all the obtained sensors to find the center point of these position coordinates includes:

[0061] Calculate the average value of the position coordinates of all sensors;

[0062] Sum the abscissas and ordinates of the position coordinates of all sensors respectively;

[0063] Divide by the total number of sensors, and the obtained average coordinate value is the coordinate of the distribution center point.

[0064] In one embodiment, obtaining the initial output value of the joint pressure measurement device includes:

[0065] Ensure that the joint pressure measurement device is in a normal working state, and each sensor is stably connected to the data acquisition system without faults or abnormalities;

[0066] When the joint is not under external force or in a natural relaxation state, start the data acquisition function of the joint pressure measurement device;

[0067] Multiple sensors in the device start to work, continuously sense the pressure at their respective positions, and convert the sensed pressure signals into corresponding electrical signals, which are transmitted to the data processing unit through the data transmission line;

[0068] After the data processing unit receives the electrical signals transmitted by each sensor, it performs preliminary analog-to-digital conversion on them, converts the analog signals into digital signals, and then records the pressure values corresponding to these digital signals according to the preset time interval or data acquisition rule. These newly recorded and unprocessed pressure values are the initial output values of the joint pressure measurement device.

[0069] In one embodiment, determining the error compensation amount according to the compensation model using the pressure point coordinates and the initial output value includes:

[0070] Obtain the pressure point coordinates and the initial output value;

[0071] Call the pre-established and stored compensation model, which is obtained by applying different pressures and pressures at different positions to the device during the compensation model test session of the joint pressure measurement device, acquiring a large amount of data and performing analysis and processing on it. It contains the corresponding relationships between the pressure point coordinates and the error compensation amount, as well as between the initial output value and the error compensation amount;

[0072] Determine the error compensation amount.

[0073] In one embodiment, determining the error compensation amount includes:

[0074] According to the compensation model, input the obtained pressure point coordinates and the initial output value into the model respectively;

[0075] For the pressure point coordinates, the model will output the error compensation amount corresponding to the coordinates;

[0076] For the initial output value, the model will also output the corresponding error compensation amount.

[0077] In one embodiment, adding the initial output value and the error compensation amount to obtain the compensated output value includes:

[0078] Ensure that the initial output value of the joint pressure measurement device and the corresponding error compensation amount determined according to the compensation model are obtained. These two data are the basis for the subsequent addition operation;

[0079] Add the initial output value and the error compensation amount, that is, add the error compensation amount to the initial output value;

[0080] After the addition operation, the obtained result is the compensated output value of the joint pressure measurement device.

[0081] Figure 2 It is a schematic structural diagram of a joint pressure measurement device based on a sensor array provided by an embodiment of the present application.

[0082] The joint pressure measurement device based on the sensor array includes:

[0083] A distribution position acquisition module 201, configured to acquire the distribution positions of multiple sensors during the joint pressure measurement process, determine the distribution center point, and establish a coordinate system with this point as the origin;

[0084] An initial output value acquisition module 202, configured to acquire the initial output value of the joint pressure measurement device;

[0085] An error compensation amount determination module 203, configured to determine the error compensation amount according to the compensation model by using the pressure point coordinates and the initial output value;

[0086] A compensated output value acquisition module 204, configured to add the initial output value and the error compensation amount to obtain the compensated output value.

[0087] Figure 3 It shows a schematic structural diagram of an electronic device provided by an embodiment of the present application.

[0088] The electronic device may include a processor 301 and a memory 302 storing computer program instructions.

[0089] Specifically, the above-mentioned processor 301 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0090] The memory 302 may include a mass storage for data or instructions. By way of example and not limitation, the memory 302 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive, or a combination of two or more of these. Where appropriate, the memory 302 may include removable or non-removable (or fixed) media. Where appropriate, the memory 302 may be internal or external to the electronic device. In a particular embodiment, the memory 302 may be a non-volatile solid-state memory.

[0091] In one embodiment, the memory 302 may be a read only memory (ROM). In one embodiment, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or a flash memory, or a combination of two or more of these.

[0092] The processor 301 reads and executes the computer program instructions stored in the memory 302 to implement any one of the above-described sensor array-based joint pressure measurement methods in the embodiments.

[0093] In one example, the electronic device may further include a communication interface 303 and a bus 310. Among them, as Figure 3 shown, the processor 301, the memory 302, and the communication interface 303 are connected through the bus 310 to complete communication with each other.

[0094] The communication interface 303 is mainly used to implement communication between the various modules, devices, units, and / or devices in the embodiments of the present application.

[0095] The bus 310 includes hardware, software, or both, and couples the components of the electronic device to each other. By way of example and not limitation, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an InfiniBand interconnect, a Low Pin Count (LPC) bus, a memory bus, a MicroChannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses or a combination of two or more of these. Where appropriate, the bus 310 may include one or more buses. Although the embodiments of the present application describe and illustrate specific buses, the present application contemplates any suitable bus or interconnect.

[0096] In addition, in combination with the joint pressure measurement method based on a sensor array in the above embodiments, an embodiment of the present application can be implemented by providing a computer-readable storage medium. Computer program instructions are stored on the computer-readable storage medium; when the computer program instructions are executed by a processor, any one of the joint pressure measurement methods based on a sensor array in the above embodiments is implemented.

[0097] It should be clear that the present application is not limited to the specific configurations and processes described above and illustrated in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and illustrated as examples. However, the method process of the present application is not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications, and additions, or change the order between steps after understanding the spirit of the present application.

[0098] The functional modules shown in the above block diagrams can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), appropriate firmware, a plug-in, a functional card, and so on. When implemented in software, the elements of the present application are programs or code segments used to perform the required tasks. The program or code segment can be stored in a machine-readable medium or transmitted via a data signal carried in a carrier wave on a transmission medium or a communication link. A "machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROMs, flash memories, Erasable ROMs (EROMs), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, and so on. The code segment can be downloaded via a computer network such as the Internet, an intranet, and so on.

[0099] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps. That is to say, the steps can be executed in the order mentioned in the embodiments, or different from the order in the embodiments, or several steps can be executed simultaneously.

[0100] As described above with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems) and computer program products according to embodiments of the present application. It should be understood that each block in the flowchart and / or block diagram, and the combination of blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device to generate a machine, such that these instructions executed by the processor of the computer or other programmable data processing device enable the implementation of the functions / operations specified in one or more blocks of the flowchart and / or block diagram. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field programmable logic circuit. It should also be understood that each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, can also be implemented by dedicated hardware that performs the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0101] As mentioned above, the above are only specific embodiments of the present application. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described systems, modules, and units can refer to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present application.

Claims

1. A joint pressure measurement method based on a sensor array, applied to a joint pressure measurement device provided with a plurality of sensors arranged in an array, characterized in that: include: During the joint pressure measurement process, the distribution positions of multiple sensors are obtained, the distribution center point is determined, and a coordinate system is established with the center point as the origin; obtaining an initial output value of a joint pressure measuring device; According to the compensation model, the error compensation amount is determined using the pressure point coordinates and the initial output value; The initial output value is added to the error compensation amount to obtain the compensated output value.

2. The joint pressure measurement method based on the sensor array according to claim 1, characterized in that: Get the distribution positions of multiple sensors, determine the distribution center point, and establish a coordinate system with this point as the origin, including: Determine the specific spatial position information of each sensor in the joint pressure measurement device in the array in which it is located by measuring or recording; Calculate and analyze the acquired position coordinates of all sensors to find the center point of these position coordinates; Take the determined distribution center point as the origin of the coordinate system and determine the direction of the coordinate axis according to the actual situation and measurement requirements.

3. The joint pressure measurement method based on the sensor array according to claim 2, characterized in that: Calculate and analyze the acquired position coordinates of all sensors to find the center point of these position coordinates, including: Calculate the average of all sensor position coordinates; Sum the horizontal and vertical coordinates of all sensor position coordinates respectively; Divide by the total number of sensors to get the average coordinate value, which is the coordinate of the center point of the distribution.

4. The joint pressure measurement method based on the sensor array according to claim 3, characterized in that: Obtaining the initial output value of the joint pressure measurement device, including: Ensure that the joint pressure measurement device is in normal working condition, and that the connection between each sensor and the data acquisition system is stable and there are no faults or abnormalities; When the joint is not subjected to external force or is in a naturally relaxed state, the data collection function of the joint pressure measuring device is started; Multiple sensors in the device start working, sensing the pressure conditions at their respective locations in real time, and converting the sensed pressure signals into corresponding electrical signals, which are transmitted to the data processing unit through the data transmission line; After the data processing unit receives the electrical signals transmitted by each sensor, it performs preliminary analog-to-digital conversion on them, converting the analog signals into digital signals, and then records the pressure values ​​corresponding to these digital signals according to preset time intervals or data acquisition rules. These pressure values ​​that have just been recorded without any processing are the initial output values ​​of the joint pressure measuring device.

5. The joint pressure measurement method based on the sensor array according to claim 4, characterized in that: According to the compensation model, the error compensation amount is determined using the pressure point coordinates and the initial output value, including: Get the pressure point coordinates and initial output value; Calling a pre-established and stored compensation model, which is obtained by applying different pressures and pressures at different positions to the joint pressure measuring device in the compensation model test phase, and obtaining a large amount of data and analyzing and processing it. It includes the corresponding relationship between the pressure point coordinates and the error compensation amount, and between the initial output value and the error compensation amount; Determine the amount of error compensation.

6. The joint pressure measurement method based on the sensor array according to claim 5, characterized in that: Determine the error compensation amount, including: According to the compensation model, the obtained pressure point coordinates and initial output values ​​are input into the model respectively; For the pressure point coordinates, the model will output the error compensation corresponding to the coordinates; For the initial output value, the model will also output the corresponding error compensation amount.

7. The joint pressure measurement method based on the sensor array according to claim 6, characterized in that: Add the initial output value and the error compensation amount to obtain the compensated output value, including: Ensure that the initial output value of the joint pressure measurement device and the corresponding error compensation amount determined according to the compensation model have been obtained. These two data are the basis for subsequent addition operations; Add the initial output value and the error compensation amount, that is, add the error compensation amount to the initial output value; After the addition operation, the result obtained is the compensated output value of the joint pressure measuring device.

8. A joint pressure measurement device based on a sensor array, characterized in that: The device comprises: The distribution position acquisition module is used to obtain the distribution positions of multiple sensors during the joint pressure measurement process, determine the distribution center point, and establish a coordinate system with this point as the origin; An initial output value acquisition module, used to acquire the initial output value of the joint pressure measurement device; An error compensation amount determination module is used to determine the error compensation amount according to the compensation model using the pressure point coordinates and the initial output value; The compensation output value acquisition module is used to add the initial output value and the error compensation amount to obtain the compensation output value.

9. An electronic device, characterized in that: The electronic device comprises: a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, the sensor array-based joint pressure measurement method according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer program instructions, and when the computer program instructions are executed by a processor, the sensor array-based joint pressure measurement method according to any one of claims 1 to 7 is implemented.

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