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film pressure sensor in intelligent shoe bag
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Application of Aidong film pressure sensor in intelligent shoe bag

March 26th, 2017 , Posted By J. Smith

Smart shoes and insoles: with the wide development of smart wear design concept in consumer products, AI Dong group has also received more and more customer consultation, among which the use of insole pressure sensor in smart wear products has attracted more and more attention.

 

The internal contour of the insole can refer to the uniform shape (Figure 1). The only difference is that different sizes have different size contours, and the sensor points that need to be accommodated in the insole can also be adjusted accordingly. For the size of sensor points, different sizes can be adopted according to the actual test target requirements, such as 2cm single point, 4cm single point, grid distribution, etc.

 

According to the calculation of 100kg human body weight, the contact area between each foot and the ground is 200 square centimeters. If the pressure is evenly distributed, the applied pressure on each square centimeter is 0.5kg. Considering the irregular distribution of bone inside the foot (the pressure is mainly concentrated in the forefoot, the rear heel and the outside of the foot, as shown in the red area in Figure 5), the possible maximum pressure per square centimeter can be defined as 10kg. If the single point sensor size is selected as the minimum point of 2 square centimeter, the actual maximum pressure range it may be subjected to is 20kg

 

According to the number of sensor points, the signal leading out ports can be roughly divided into two types. For a small number of points, the signal leading out terminals can be bonded with metal terminals with a center line spacing of 2.54mm. If the number of points is large, the FPC interface of flexible printed line needs to be used. As the FPC signal wire of sensor is printed directly as a whole when the sensor wire is manufactured, the FPC plug-in terminal part is also the connector of silver wire contact, such as test circuit. Therefore, considering the wear resistance of the interface, Aidong company has developed a low impedance carbon film process to cover the FPC Silver slurry contact surface, which has been fully proved according to the experimental verification and a large number of actual projects of customers It is shown that this technology can be widely used in sensor products.

 

According to different pressure point testing requirements, the finer the test point, the smaller the single point size requirements. If the insole sensor needs to be evaluated before development, it can directly purchase samples of 2cm sensing area single point (model: ims-00004) and 4cm sensing area single point (model: ims-00005) of Aidong film pressure sensor standard, and its different pressure test ranges can meet the needs of customer project evaluation quickly.

 

By expanding the insole grid sensor into a plane distribution, not only the static pressure distribution of the sole can be tested, but also the dynamic data of gait can be recorded and analyzed. The overall sensing area size of the sample made by Aidong film pressure sensor is 53cm * 31cm, and the minimum point position is 5mm * 5mm. The test pressure meets 50kg per square centimeter, and the signal outlet port adopts FPC interface mode.

 

 

 

Smart backpack: with more and more trips, consumers not only need more and more fashionable handbags, but also can carry a large number of camping equipment backpacks which are necessary for outdoor hiking. These handbags and backpacks, in addition to the appearance and style, are increasingly becoming an important reference standard for consumers to choose. . for designers, the comfort effect design of consumers can only be evaluated by users' trial experience. In addition to the human body's touch to the h

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