Method for weighing weight of object on inflatable mattress

Abstract

A method for weighing the weight of an object on an inflatable mattress is characterized by comprising the following steps of: 1 fitting a working curve of a pump according to the working characteristics of the pump; 2 according to the working curve of the pump, selecting the inflation time of the pump and the pressure cross point of the pump as measurement input variables; 3 gear designing: designing a mapping matrix of the inflation time, the cross point pressure and the weight gears according to the characteristics of different load weights, different inflation time and different cross point pressure, and taking the mapping matrix as a comparison database of an automatic weighing algorithm; 4 after a patient lies on the mattress, tracking the inflation time and the cross pressure point of each cycle of the pump in real time through software, and comparing the inflation time and the cross pressure point with the data of the designed mapping matrix. According to the body weight weighing method, a special weighing gas circuit is not needed, automatic weighing of the patient can be achieved on the basis of an existing working gas circuit of the mattress, and the implementation cost is low.

Description

technical field [0001] The invention relates to the field of weighing methods, in particular to a method for weighing objects on an air mattress. Background technique [0002] The current automatic weighing technology mainly inflates the mattress to the preset pressure value, then rotates the air circuit to the weighing air circuit, and measures the time between the deflation time and the drop of the mattress pressure value through the pre-set precise deflation hole. The fitting curve relationship of the patient can be obtained to obtain the patient's weight level, and then the pressure can be set according to the weight. The automatic weighing function of this kind of air mattress is only applied to high-end products, and the weight setting of low-end air mattresses is manually set by professionals. The air path of this solution is complicated, requiring a special weighing air path, and the weighing module cannot be shared with the normal air path, so it is not suitable fo...

AI Technical Summary

Problems solved by technology

The air path of this solution is complicated, requiring a special weighing air path, and the weighing module cannot be shared with the normal air path, so it is not suitable for low-end inflatable mattresses; the design accuracy of the vent hole is high, the production is difficult, and the production cost high

[0003] At present, there is no mid-to-low-grade air mattress in the market, which can also have an automatic weighing function without increasing the cost and complexity of the product.

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