Application of Longshow moving film pressure sensor in the pressure

test of shoe pad:Application of Longshow moving film pressure sensor

in the pressure test of shoe pad:

Application of Longshow moving film pressure sensor in the pressure

test of shoe pad

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With smart wearable design concept in the consumer products to carry

out a broad, Longshow Group also received more and more customers

consulting, which the insole pressure sensors in smart wearable

products is used more and more by attention.

Localization problem of sensor point

Human insole contour map can refer uniform shape (Figure 1), the only

difference is different size has different size of the contour and the

internal need to accommodate the sensors may also be adjusted.

For sensor size, can according to the actual needs of the test target

different with different dimensions, such as 2cm single point (Figure

2), 4cm single point (Figure 3), grid distribution (Figure 4).

Single point density distribution of 2cm shoe pads in the contour of

the shoe pad

A map, contour map, two insole 2cm single point pressure sensor

Single point density distribution grid of 4cm shoe pads with single

point density

Figure three, figure four 4cm single point pressure sensor, pressure

sensor grid

Definition of specification parameters for single point of the sensor

100kg body weight is calculated in accordance with, each foot and the

ground contact area is 200 square centimeters, if uniform distribution

of pressure, the pressure per square centimeter is applied for 0.5kg.

Taking into account due to the irregular (pressure is mLongshownly

concentrated in the forefoot, heel and foot three lateral part, figure

5 Red areas shown) distribution of internal foot bones, per square cm

on the possible maximum pressure can be defined for 10kg, if the

choice of single point sensor size as 2 cm square minimum points, then

the actual may be subject to the maximum pressure range for 20kg.

2cm shoe pad single point density distribution pressure distribution

Figure five, 2cm single point pressure sensor on the pressure

distribution region

Sensor signal extraction line definition

According to the number of points in sensor, signal outlet port can be

roughly divided into two, a small amount of the number of signal

terminals can be the center line spacing of 2.54mm terminal metal

bonding, if a large number of need by the FPC flexible printed line

interface. Because the FPC sensor signal wire is in sensor wire

production directly and integrally printed, so FPC connection plug in

the end part is silver wire contacts connected as the test circuit

connector, so considering the wear resistance of the interface,

Longshow dynamic company has developed a low impedance carbon membrane

process covering the contact surface of the FPC silver paste,

depending on experimental verification and a large number of customers

for the actual project references, has been fully proved the

technology in sensor products can already mature application.

According to the different stress points test requirements, test point

is fine, you need to use single point requires a smaller size. Insole

sensor if necessary before development assess