CN114323432B - Multidimensional testing method for orthosis film pressure sensor - Google Patents
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Abstract
The invention discloses a multidimensional testing method of a film pressure sensor of an orthosis, which comprises a rack, wherein the upper end of the rack is provided with a conveying belt for placing the pressure sensor to be detected, a detachable tray with the same size as the pressure sensor to be detected is arranged on the conveying belt, a detection device which is connected with an air supply device and can move up and down, front and back and left and right is arranged right above the tray, one side of the detection device facing the tray is provided with a test contact, the test contact is provided with a standard pressure gauge, and the detection device, the tray and the air supply device are respectively connected with a control system. The multi-dimensional testing method disclosed by the invention can be used for detecting the product quality on line, realizing the integration of production and test by butting with a production line, and achieving high qualification rate and high efficiency.
Description
Technical Field
The invention relates to the field of pressure sensor detection, in particular to a multidimensional testing method of an orthosis film pressure sensor.
Background
The pressure sensor is a common sensor in a mechanical structure and is mainly used for detecting the pressure value between contact surfaces, so that the equipment is ensured to run in a normal value range, and accidents are avoided. The importance of the pressure sensor is self-evident, so that whether the equipment can normally run or not is influenced by the quality of the pressure sensor, the existing pressure sensor needs to be manually subjected to detection operation of the sensor after manufacturing is finished, quality inspection work is finished, and efficiency is low.
When the pressure sensor and the pulse patch are embedded in the induction orthopedic area, and the pressure sensor and the pulse patch are used, when the real-time pressure exceeds the set pressure induction interval, the control unit controls the voltage controller to supply power to the pulse patch, the pulse patch works, pulse stimulation is sent to a user, the user is reminded of adjusting the physical state, and the correction is carried out automatically. The volume of the orthosis is not large and the requirements for the pressure sensor are higher. A commonly used pressure sensor for orthoses is a membrane pressure sensor.
The film pressure sensor has good flexibility and ductility, can be bent or folded freely, has flexible and various structural forms, can be arranged randomly according to the requirement of measurement conditions, and can be used for detecting complex measured objects very conveniently. Therefore, the novel flexible sensor is widely applied in the fields of electronic skin, medical care, electronics, electricians, sports equipment, textiles, aerospace, environmental monitoring and the like. The conventional film pressure sensor includes an electrode layer and a sensitive film layer, which are brought into close contact with each other when the film pressure sensor is pressurized, so that the resistance of the device is changed, and thus, the external pressure is detected. For a thin film pressure sensor, sensitivity and linearity are the two most important performance indicators of a thin film pressure sensor.
Film processing for film pressure sensors is conventionally done by physical vapor deposition or direct purchase of PET film for reprocessing. In the actual production process of the film, various defects such as holes, mosquitoes, black spots, crystal spots, scratches, spots and the like can appear more or less due to the influence of various factors, so that the value of the film is damaged, and if the film is not detected, defective products flow into the market, thereby influencing the reputation of a producer.
Disclosure of Invention
In order to solve the technical problems and overcome the defects, the invention discloses a multi-dimensional testing method for online detecting the quality of products, which can realize the integration of production and test by butting with a production line, and achieve high qualification rate and high efficiency of an orthosis film pressure sensor, and the method has the following specific scheme:
the utility model provides a multidimension degree test method of orthopedic ware film pressure sensor, includes a frame, the frame upper end is installed one and is used for placing the conveyer belt of waiting to examine pressure sensor, install on the conveyer belt detachable and with wait to examine the same tray of pressure sensor size, install the detection device who connects air feeder and can reciprocate left and right movement directly over the tray, detection device is towards one side of tray installs the test contact, install standard manometer on the test contact, detection device, tray and air feeder connect control system respectively, include the following steps:
step 1: taking a pressure sensor to be detected, and placing the pressure sensor into a tray;
step 2: detecting the surface property of the film pressure sensor; judging whether the surface of the film pressure sensor has defects or not; if the standard is not met, the waste water is put into a recovery area; if the standard is reached, the step 3 is carried out;
step 3: comparing with a standard film pressure sensor, adjusting the position of the detection device for a plurality of times, and detecting the indicating pressure at a plurality of points of the film pressure sensor on line; judging whether the gauge pressure of the film pressure sensor is in a standard range or not; if the standard is not met, the waste water is put into a recovery area; if the standard is reached, the step 4 is entered;
step 4: comparing with a standard film pressure sensor, adjusting the position of the detection device and the gas pressure of the gas supply device, and performing online point-off detection on a single point of the film pressure sensor; judging whether the repeatability of the film pressure sensor is in a standard range; if the standard is not met, the waste water is put into a recovery area; if the standard is reached, the step 5 is carried out;
step 5: performing closed vacuumizing treatment on the frame, comparing with a standard film pressure sensor, adjusting the position of the detection device for multiple times, and performing online detection on absolute pressure at multiple points of the film pressure sensor; judging whether the absolute pressure of the film pressure sensor is in a standard range or not; if the standard is not met, the waste water is put into a recovery area; if the standard is reached, the step 6 is entered;
step 6: and packaging the detected film pressure sensor.
The surface detection, the gauge pressure detection (precision detection and comparison), the absolute pressure detection (precision detection and comparison) and the repeatability detection (fatigue test) are carried out on the relative film pressure sensor, the required performance of the orthosis is basically detected, and the basic requirement of the orthosis sensor is met.
In the step 2, the surface property of the film pressure sensor is detected, and the method comprises the following steps:
s1: a light source and a camera are arranged on the conveyor belt, and film images of a plurality of groups of film pressure sensors are obtained; converting the image into a gray scale image; taking the gray pixel value of any point in one image, and radiating outwards by the point; performing difference comparison operation on the gray pixel value of the adjacent point and the gray pixel of the point to obtain a difference value A1; and recording the comparison quantity as B1; if A1 is less than or equal to 20; recording the gray scale pixel of the adjacent point; if A1 is more than 20, discarding the gray pixels of the adjacent points; and so on;
s2: if the B1 value is greater than 60% of the image pixel points, the average value of the gray pixels of each recorded adjacent point is calculated to obtain a standard gray pixel value; forming a thin film standard gray scale image overlapped with the thin film image by the standard gray scale pixel value; performing AND operation on the film standard gray level image and the film actual gray level image to obtain pixel points which are different from the film gray level image in the film image; wherein, when the absolute value of the difference value after operation is more than 20; judging the point as a distinguishing point; after the distinguishing points are obtained, entering a step S3;
s3: if the B1 value cannot reach 60% of the image pixel point; judging the pixel at any point as a distinguishing point; meanwhile, judging the recorded pixel points to be distinguishing points; step S4 is entered;
s4: judging the position and the type of abnormality of the film by the position and the shape of the distinguishing point: if the distinguishing points form an uneven sheet structure; judging the part as a hole; if the distinguishing points form a dot-shaped structure; the location is determined to be a black spot or a blob.
The step 2 also comprises a method for detecting the thickness of the film on line, which comprises the following steps:
a1: an infrared measuring instrument is arranged on the conveying belt, and a standard film pressure sensor is placed on a measuring platform;
a2: at least five measuring positions are linearly arranged at intervals along the conveying direction of the standard film pressure sensor; the infrared measuring instrument comprises at least 10 measuring basic points; each measuring base point corresponds to a measuring point of a film on the standard film pressure sensor; each measuring base point is perpendicular to the conveying direction of the standard film pressure sensor; moving the infrared measuring instrument to each measuring position; obtaining corresponding thickness data of the measuring points;
a3: collecting the data measured at each measuring position in the step A2 and calculating average thickness data to obtain an average thickness comparison line;
a4: conveying the film pressure sensor to be detected to a measuring platform, and measuring actual measuring point thickness data corresponding to each measuring position through an infrared measuring instrument; forming an actual thickness curve from each set of actual measurement point thickness data; and compared to an average thickness control line; judging whether the up-and-down fluctuation of the actual thickness curve relative to the average thickness comparison line is within a set threshold value or not; if the thickness of the film pressure sensor is not within the set threshold value, judging that the thickness of the film pressure sensor is abnormal; recovering the waste water;
a5: the film pressure sensor with normal thickness measurement enters the next procedure.
The method for detecting whether the gauge pressure of the film pressure sensor meets the standard in the step 3 on line comprises the following substeps:
b1: placing a standard film pressure sensor on one of the standard trays on the conveyor belt;
b2: synchronously setting the pressure value and the same position of the detection device, and carrying out online detection on a standard film pressure sensor and a certain point of the film pressure sensor to be detected;
b3: reading whether the readings of the film pressure sensors to be detected are within a set threshold value or not through a control system; if the thickness of the film pressure sensor is not within the set threshold value, judging that the thickness of the film pressure sensor is abnormal; recovering the waste water;
b4: judging whether the readings of the film pressure sensor to be detected and the standard film pressure sensor are within a set threshold value or not; if the thickness of the film pressure sensor is not within the set threshold value, judging that the thickness of the film pressure sensor is abnormal; recovering the waste water;
b5: repeating the steps B2-B5, and carrying out on-line detection on the other point of the film pressure sensor.
The automatic detection of the manufactured film pressure sensor can be realized, and meanwhile, whether the precision of the film pressure sensor meets the requirement can be primarily judged; the condition of the film pressure sensor of the subsequent batch can be quickly adjusted.
The method for detecting whether the repeatability of the film pressure sensor meets the standard in the step 4 on line comprises the following substeps:
c1: placing a standard film pressure sensor on one of the standard trays on the conveyor belt;
c2: setting a fixed pressure value and the same position of the detection device, carrying out intermittent online detection on a certain point of the standard film pressure sensor, and collecting intermittently measured data to obtain a standard pressure fluctuation curve;
and C3: performing intermittent online detection on the same points of a plurality of groups of film pressure sensors to be detected, and forming an actual pressure curve by pressure data of each group of actual measurement points; comparing the actual pressure curve with the standard pressure fluctuation curve, and judging whether the up-and-down fluctuation of the actual pressure curve relative to the standard pressure fluctuation curve is within a set threshold value; if the pressure of the film pressure sensor is not within the set threshold value, judging that the pressure of the film pressure sensor is abnormal; recovering the waste water;
and C4: repeating C2-C3, and carrying out online repeated detection on the other point of the film pressure sensor.
The method for detecting whether the repeatability of the film pressure sensor meets the standard in the step 4 on line comprises the following sub-steps:
d1: placing a standard film pressure sensor on one of the standard trays on the conveyor belt;
d2: setting a floating pressure value and the same position of a detection device, wherein the pressure value of the detection device changes along with the change of time, carrying out intermittent online detection on a certain point of a standard film pressure sensor, and collecting intermittently measured data to obtain a standard pressure change curve;
d3: under the same condition of the detection device, carrying out intermittent online detection on the same points of a plurality of groups of film pressure sensors to be detected, and forming an actual pressure curve by pressure data of each group of actual measurement points; comparing the actual pressure curve with the standard pressure change curve, and judging whether the up-down fluctuation of the actual pressure curve relative to the standard pressure change curve is within a set threshold value; if the pressure of the film pressure sensor is not within the set threshold value, judging that the pressure of the film pressure sensor is abnormal; recovering the waste water;
d4: repeating the steps D2-D3, and carrying out online repeated detection on the other point of the film pressure sensor.
Compared with the prior art, the multidimensional testing method based on the orthosis film pressure sensor has the following advantages: the method can realize automatic detection of the manufactured film pressure sensor and can further preliminarily judge the reason of the surface quality defect of the film pressure sensor; the condition of the batch of raw materials after the film pressure sensor is quickly adjusted, the increase of production cost can be avoided, and secondly, the pressure detection and fatigue detection of the film pressure sensor are automatically realized, and whether the film pressure sensor has defects or not is judged; the whole detection process is easier to monitor, the accuracy is higher, the production efficiency can be greatly improved through automatic detection, and the labor cost is reduced.
Detailed Description
The invention is further described by the examples shown below:
in order that those skilled in the art will more clearly understand the present invention, the following examples will be described in further detail with reference to the accompanying drawings, but it should be understood that the following examples are only preferred embodiments of the present invention and the scope of the present invention is not limited thereto.
The embodiment provides a multidimensional testing method of an orthosis film pressure sensor, which comprises a frame, wherein a conveying belt for placing a pressure sensor to be detected is arranged at the upper end of the frame, a tray which is detachable and has the same size as the pressure sensor to be detected is arranged on the conveying belt, a detection device which is connected with an air supply device and can move up and down, front and back, left and right is arranged right above the tray, a testing contact is arranged on one side of the detection device, a standard pressure gauge is arranged on the testing contact, and the detection device, the tray and the air supply device are respectively connected with a control system, and the multidimensional testing method comprises the following steps:
step 1: taking a pressure sensor to be detected, and placing the pressure sensor into a tray;
step 2: detecting the surface property of the film pressure sensor; judging whether the surface of the film pressure sensor has defects or not; if the standard is not met, the waste water is put into a recovery area; if the standard is reached, the step 3 is carried out;
in the step 2, the surface property of the film pressure sensor is detected, and the method comprises the following steps:
s1: a light source and a camera are arranged on the conveyor belt, and film images of a plurality of groups of film pressure sensors are obtained; converting the image into a gray scale image; taking the gray pixel value of any point in one image, and radiating outwards by the point; performing difference comparison operation on the gray pixel value of the adjacent point and the gray pixel of the point to obtain a difference value A1; and recording the comparison quantity as B1; if A1 is less than or equal to 20; recording the gray scale pixel of the adjacent point; if A1 is more than 20, discarding the gray pixels of the adjacent points; and so on;
s2: if the B1 value is greater than 60% of the image pixel points, the average value of the gray pixels of each recorded adjacent point is calculated to obtain a standard gray pixel value; forming a thin film standard gray scale image overlapped with the thin film image by the standard gray scale pixel value; performing AND operation on the film standard gray level image and the film actual gray level image to obtain pixel points which are different from the film gray level image in the film image; wherein, when the absolute value of the difference value after operation is more than 20; judging the point as a distinguishing point; after the distinguishing points are obtained, entering a step S3;
s3: if the B1 value cannot reach 60% of the image pixel point; judging the pixel at any point as a distinguishing point; meanwhile, judging the recorded pixel points to be distinguishing points; step S4 is entered;
s4: judging the position and the type of abnormality of the film by the position and the shape of the distinguishing point: if the distinguishing points form an uneven sheet structure; judging the part as a hole; if the distinguishing points form a dot-shaped structure; the location is determined to be a black spot or a blob.
The step 2 also comprises a method for detecting the thickness of the film on line, which comprises the following steps:
a1: an infrared measuring instrument is arranged on the conveying belt, and a standard film pressure sensor is placed on a measuring platform;
a2: at least five measuring positions are linearly arranged at intervals along the conveying direction of the standard film pressure sensor; the infrared measuring instrument comprises at least 10 measuring basic points; each measuring base point corresponds to a measuring point of a film on the standard film pressure sensor; each measuring base point is perpendicular to the conveying direction of the standard film pressure sensor; moving the infrared measuring instrument to each measuring position; obtaining corresponding thickness data of the measuring points;
a3: collecting the data measured at each measuring position in the step A2 and calculating average thickness data to obtain an average thickness comparison line;
a4: conveying the film pressure sensor to be detected to a measuring platform, and measuring actual measuring point thickness data corresponding to each measuring position through an infrared measuring instrument; forming an actual thickness curve from each set of actual measurement point thickness data; and compared to an average thickness control line; judging whether the up-and-down fluctuation of the actual thickness curve relative to the average thickness comparison line is within a set threshold value or not; if the thickness of the film pressure sensor is not within the set threshold value, judging that the thickness of the film pressure sensor is abnormal; recovering the waste water;
a5: the film pressure sensor with normal thickness measurement enters the next procedure.
Step 3: comparing with a standard film pressure sensor, adjusting the position of the detection device for a plurality of times, and detecting the indicating pressure at a plurality of points of the film pressure sensor on line; judging whether the gauge pressure of the film pressure sensor is in a standard range or not; if the standard is not met, the waste water is put into a recovery area; if the standard is reached, the step 4 is entered;
the method for detecting whether the gauge pressure of the film pressure sensor meets the standard in the step 3 on line comprises the following substeps:
b1: placing a standard film pressure sensor on one of the standard trays on the conveyor belt;
b2: synchronously setting the pressure value and the same position of the detection device, and carrying out online detection on a standard film pressure sensor and a certain point of the film pressure sensor to be detected;
b3: reading whether the readings of the film pressure sensors to be detected are within a set threshold value or not through a control system; if the thickness of the film pressure sensor is not within the set threshold value, judging that the thickness of the film pressure sensor is abnormal; recovering the waste water;
b4: judging whether the readings of the film pressure sensor to be detected and the standard film pressure sensor are within a set threshold value or not; if the thickness of the film pressure sensor is not within the set threshold value, judging that the thickness of the film pressure sensor is abnormal; recovering the waste water;
b5: repeating the steps B2-B5, and carrying out on-line detection on the other point of the film pressure sensor.
The automatic detection of the manufactured film pressure sensor can be realized, and meanwhile, whether the precision of the film pressure sensor meets the requirement can be primarily judged; the condition of the film pressure sensor of the subsequent batch can be quickly adjusted.
Step 4: comparing with a standard film pressure sensor, adjusting the position of the detection device and the gas pressure of the gas supply device, and performing online point-off detection on a single point of the film pressure sensor; judging whether the repeatability of the film pressure sensor is in a standard range; if the standard is not met, the waste water is put into a recovery area; if the standard is reached, the step 5 is carried out;
the method for detecting whether the repeatability of the film pressure sensor meets the standard in the step 4 on line comprises the following substeps:
c1: placing a standard film pressure sensor on one of the standard trays on the conveyor belt;
c2: setting a fixed pressure value and the same position of the detection device, carrying out intermittent online detection on a certain point of the standard film pressure sensor, and collecting intermittently measured data to obtain a standard pressure fluctuation curve;
and C3: performing intermittent online detection on the same points of a plurality of groups of film pressure sensors to be detected, and forming an actual pressure curve by pressure data of each group of actual measurement points; comparing the actual pressure curve with the standard pressure fluctuation curve, and judging whether the up-and-down fluctuation of the actual pressure curve relative to the standard pressure fluctuation curve is within a set threshold value; if the pressure of the film pressure sensor is not within the set threshold value, judging that the pressure of the film pressure sensor is abnormal; recovering the waste water;
and C4: repeating C2-C3, and carrying out online repeated detection on the other point of the film pressure sensor.
The method for detecting whether the repeatability of the film pressure sensor meets the standard in the step 4 on line comprises the following sub-steps:
d1: placing a standard film pressure sensor on one of the standard trays on the conveyor belt;
d2: setting a floating pressure value and the same position of a detection device, wherein the pressure value of the detection device changes along with the change of time, carrying out intermittent online detection on a certain point of a standard film pressure sensor, and collecting intermittently measured data to obtain a standard pressure change curve;
d3: under the same condition of the detection device, carrying out intermittent online detection on the same points of a plurality of groups of film pressure sensors to be detected, and forming an actual pressure curve by pressure data of each group of actual measurement points; comparing the actual pressure curve with the standard pressure change curve, and judging whether the up-down fluctuation of the actual pressure curve relative to the standard pressure change curve is within a set threshold value; if the pressure of the film pressure sensor is not within the set threshold value, judging that the pressure of the film pressure sensor is abnormal; recovering the waste water;
d4: repeating the steps D2-D3, and carrying out online repeated detection on the other point of the film pressure sensor.
Step 5: performing closed vacuumizing treatment on the frame, comparing with a standard film pressure sensor, adjusting the position of the detection device for multiple times, and performing online detection on absolute pressure at multiple points of the film pressure sensor; judging whether the absolute pressure of the film pressure sensor is in a standard range or not; if the standard is not met, the waste water is put into a recovery area; if the standard is reached, the step 6 is entered;
step 6: and packaging the detected film pressure sensor.
The surface detection, the gauge pressure detection (precision detection and comparison), the absolute pressure detection (precision detection and comparison) and the repeatability detection (fatigue test) are carried out on the relative film pressure sensor, the required performance of the orthosis is basically detected, and the basic requirement of the orthosis sensor is met.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (5)
1. The utility model provides a multidimension degree test method of orthopedic ware film pressure sensor, the equipment that adopts includes a test frame, a conveyer belt that is used for placing waiting to examine pressure sensor is installed to the frame upper end, install on the conveyer belt can dismantle and with wait to examine pressure sensor size the same tray, install the detection device who connects air feeder and can reciprocate left and right movement directly over the tray, detection device towards one side of tray installs the test contact, install standard manometer on the test contact, detection device, tray and air feeder connect control system, its characterized in that respectively: the multi-dimensional testing method comprises the following steps:
step 1: taking a pressure sensor to be detected, and placing the pressure sensor into a tray;
step 2: detecting the surface property of the film pressure sensor; judging whether the surface of the film pressure sensor has defects or not; if the standard is not met, the waste water is put into a recovery area; if the standard is reached, the step 3 is carried out;
step 3: comparing with a standard film pressure sensor, adjusting the position of the detection device for a plurality of times, and detecting the indicating pressure at a plurality of points of the film pressure sensor on line; judging whether the gauge pressure of the film pressure sensor is in a standard range or not; if the standard is not met, the waste water is put into a recovery area; if the standard is reached, the step 4 is entered;
step 4: comparing with a standard film pressure sensor, adjusting the position of the detection device and the gas pressure of the gas supply device, and performing online point-off detection on a single point of the film pressure sensor; judging whether the repeatability of the film pressure sensor is in a standard range; if the standard is not met, the waste water is put into a recovery area; if the standard is reached, the step 5 is carried out;
step 5: performing closed vacuumizing treatment on the frame, comparing with a standard film pressure sensor, adjusting the position of the detection device for multiple times, and performing online detection on absolute pressure at multiple points of the film pressure sensor; judging whether the absolute pressure of the film pressure sensor is in a standard range or not; if the standard is not met, the waste water is put into a recovery area; if the standard is reached, the step 6 is entered;
step 6: packaging the detected film pressure sensor;
in the step 2, the surface property of the film pressure sensor is detected, and the method comprises the following steps:
s1: a light source and a camera are arranged on the conveyor belt, and film images of a plurality of groups of film pressure sensors are obtained; converting the image into a gray scale image; taking the gray pixel value of any point in one image, and radiating outwards by the point; performing difference comparison operation on the gray pixel value of the adjacent point and the gray pixel of the point to obtain a difference value A1; and recording the comparison quantity as B1; if A1 is less than or equal to 20; recording the gray scale pixel of the adjacent point; if A1 is more than 20, discarding the gray pixels of the adjacent points; and so on;
s2: if the B1 value is greater than 60% of the image pixel points, the average value of the gray pixels of each recorded adjacent point is calculated to obtain a standard gray pixel value; forming a thin film standard gray scale image overlapped with the thin film image by the standard gray scale pixel value; performing AND operation on the film standard gray level image and the film actual gray level image to obtain pixel points which are different from the film gray level image in the film image; wherein, when the absolute value of the difference value after operation is more than 20; judging the point as a distinguishing point; after the distinguishing points are obtained, entering a step S3;
s3: if the B1 value cannot reach 60% of the image pixel point; judging the pixel at any point as a distinguishing point; meanwhile, judging the recorded pixel points to be distinguishing points; step S4 is entered;
s4: judging the position and the type of abnormality of the film by the position and the shape of the distinguishing point: if the distinguishing points form an uneven sheet structure; judging the part as a hole; if the distinguishing points form a dot-shaped structure; the location is determined to be a black spot or a blob.
2. A method of multi-dimensional testing of an orthosis membrane pressure sensor in accordance with claim 1, wherein: the step 2 also comprises a method for detecting the thickness of the film on line, which comprises the following steps:
a1: an infrared measuring instrument is arranged on the conveying belt, and a standard film pressure sensor is placed on a measuring platform;
a2: at least five measuring positions are linearly arranged at intervals along the conveying direction of the standard film pressure sensor; the infrared measuring instrument comprises at least 10 measuring basic points; each measuring base point corresponds to a measuring point of a film on the standard film pressure sensor; each measuring base point is perpendicular to the conveying direction of the standard film pressure sensor; moving the infrared measuring instrument to each measuring position; obtaining corresponding thickness data of the measuring points;
a3: collecting the data measured at each measuring position in the step A2 and calculating average thickness data to obtain an average thickness comparison line;
a4: conveying the film pressure sensor to be detected to a measuring platform, and measuring actual measuring point thickness data corresponding to each measuring position through an infrared measuring instrument; forming an actual thickness curve from each set of actual measurement point thickness data; and compared to an average thickness control line; judging whether the up-and-down fluctuation of the actual thickness curve relative to the average thickness comparison line is within a set threshold value or not; if the thickness of the film pressure sensor is not within the set threshold value, judging that the thickness of the film pressure sensor is abnormal; recovering the waste water;
a5: the film pressure sensor with normal thickness measurement enters the next procedure.
3. A method of multi-dimensional testing of an orthosis membrane pressure sensor according to claim 1 or 2, characterized in that: the method for detecting whether the gauge pressure of the film pressure sensor meets the standard in the step 3 on line comprises the following substeps:
b1: placing a standard film pressure sensor on one of the standard trays on the conveyor belt;
b2: synchronously setting the pressure value and the same position of the detection device, and carrying out online detection on a standard film pressure sensor and a certain point of the film pressure sensor to be detected;
b3: reading whether the readings of the film pressure sensors to be detected are within a set threshold value or not through a control system; if the thickness of the film pressure sensor is not within the set threshold value, judging that the thickness of the film pressure sensor is abnormal; recovering the waste water;
b4: judging whether the readings of the film pressure sensor to be detected and the standard film pressure sensor are within a set threshold value or not; if the thickness of the film pressure sensor is not within the set threshold value, judging that the thickness of the film pressure sensor is abnormal; recovering the waste water;
b5: repeating the steps B2-B5, and carrying out on-line detection on the other point of the film pressure sensor.
4. A method of multi-dimensional testing of an orthosis membrane pressure sensor in accordance with claim 1, wherein: the method for detecting whether the repeatability of the film pressure sensor meets the standard in the step 4 on line comprises the following substeps:
c1: placing a standard film pressure sensor on one of the standard trays on the conveyor belt;
c2: setting a fixed pressure value and the same position of the detection device, carrying out intermittent online detection on a certain point of the standard film pressure sensor, and collecting intermittently measured data to obtain a standard pressure fluctuation curve;
and C3: performing intermittent online detection on the same points of a plurality of groups of film pressure sensors to be detected, and forming an actual pressure curve by pressure data of each group of actual measurement points; comparing the actual pressure curve with the standard pressure fluctuation curve, and judging whether the up-and-down fluctuation of the actual pressure curve relative to the standard pressure fluctuation curve is within a set threshold value; if the pressure of the film pressure sensor is not within the set threshold value, judging that the pressure of the film pressure sensor is abnormal; recovering the waste water;
and C4: repeating C2-C3, and carrying out online repeated detection on the other point of the film pressure sensor.
5. A method of multi-dimensional testing of an orthosis membrane pressure sensor in accordance with claim 1, wherein: the method for detecting whether the repeatability of the film pressure sensor meets the standard in the step 4 on line comprises the following sub-steps:
d1: placing a standard film pressure sensor on one of the standard trays on the conveyor belt;
d2: setting a floating pressure value and the same position of a detection device, wherein the pressure value of the detection device changes along with the change of time, carrying out intermittent online detection on a certain point of a standard film pressure sensor, and collecting intermittently measured data to obtain a standard pressure change curve;
d3: under the same condition of the detection device, carrying out intermittent online detection on the same points of a plurality of groups of film pressure sensors to be detected, and forming an actual pressure curve by pressure data of each group of actual measurement points; comparing the actual pressure curve with the standard pressure change curve, and judging whether the up-down fluctuation of the actual pressure curve relative to the standard pressure change curve is within a set threshold value; if the pressure of the film pressure sensor is not within the set threshold value, judging that the pressure of the film pressure sensor is abnormal; recovering the waste water;
d4: repeating the steps D2-D3, and carrying out online repeated detection on the other point of the film pressure sensor.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN212363549U (en) * | 2020-05-15 | 2021-01-15 | 常州天策电子科技有限公司 | Pressure film sensor calibration device |
| CN213274689U (en) * | 2020-09-01 | 2021-05-25 | 云南电网有限责任公司德宏供电局 | Standard pressure calibration table with image recognition function |
| WO2021143347A1 (en) * | 2020-01-19 | 2021-07-22 | 上海交通大学 | Calibration apparatus and method for thin-film sensor |
| CN113252699A (en) * | 2021-06-28 | 2021-08-13 | 武汉飞恩微电子有限公司 | Fault diagnosis method, device and equipment for pressure sensor and storage medium |
| CN113532733A (en) * | 2021-08-27 | 2021-10-22 | 四川大学 | A membrane pressure sensor calibration device and calibration method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021143347A1 (en) * | 2020-01-19 | 2021-07-22 | 上海交通大学 | Calibration apparatus and method for thin-film sensor |
| CN212363549U (en) * | 2020-05-15 | 2021-01-15 | 常州天策电子科技有限公司 | Pressure film sensor calibration device |
| CN213274689U (en) * | 2020-09-01 | 2021-05-25 | 云南电网有限责任公司德宏供电局 | Standard pressure calibration table with image recognition function |
| CN113252699A (en) * | 2021-06-28 | 2021-08-13 | 武汉飞恩微电子有限公司 | Fault diagnosis method, device and equipment for pressure sensor and storage medium |
| CN113532733A (en) * | 2021-08-27 | 2021-10-22 | 四川大学 | A membrane pressure sensor calibration device and calibration method |
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