Weighing system of hospital bed
A weighing system and hospital bed technology, applied in the field of hospital bed weighing system, can solve problems such as reducing the measurement accuracy of the system
Inactive Publication Date: 2012-08-22
RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN +1
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Problems solved by technology
In fact, due to the limitations of the actual processing and installation accuracy level, when two rigid planes are connected by several sensors at multiple points, the lateral involvement between the load cells will inevitably exist, which will greatly reduce the system load. measurement accuracy
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[0027] The present invention will be described in detail below with reference to the accompanying drawings and in combination with specific embodiments.
[0028] Such as image 3 As shown, in the hospital bed weighing system designed by the present invention, an elastic tolerance connection structure is introduced, and the hospital bed weighing system is as follows figure 1 As shown, it includes bed surface 5, upper frame 2, load cell 4 and lower frame 1 from top to bottom. The bed surface 5 and the upper frame 2 are connected with the lower frame 1 through four load cells 4 to form a complete weighing hospital bed with a weighing function.
[0029] image 3 The upper frame 2 and the lower frame 1 shown are planar frames, and the actual design is not subject to this restriction. Both the upper frame 2 and the lower frame 1 can be non-planar structures, as long as they are rigid frames, parallel to the installation surface of the load cell Just can realize the function that th...
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The invention discloses a weighing system of a hospital bed, which sequentially comprises a bed surface, an upper frame, weighing sensors and a lower frame from top and bottom, wherein the upper frame is connected with the bed surface, at least three weighing sensors are arranged between the lower frame and the upper frame to form stable support and measure the loading weight on the bed surface, the fixed end of each weighing sensor is rigidly connected with the upper frame, the measuring end of each weighing sensor is in elastic tolerance connection with the lower frame, or the fixed end of each weighing sensor is rigidly connected with the lower frame, the measuring end of each weighing sensor is in elastic tolerance connection with the upper frame, the core of an elastic tolerance buffer element is a stepped cylindrical elastic buffer body, the positional deviations between mounting holes of the weighing sensors and corresponding mounting holes on the connected upper frame or the connected lower frame are tolerated through the elastic deformation of the elastic buffer body, so the influence of additional loads to the sensors, which is caused by the decentraction of mounting hole positions, is eliminated.
Description
technical field [0001] The invention relates to the technical field of medical instruments, in particular to a weighing system for a hospital bed. Background technique [0002] The weight change of medical patients, especially the weight change of critically ill patients, is an important indicator that needs to be monitored during the treatment process. The equipment for detecting the patient's weight includes wheelchair scales, weighing scales, and hospital beds with weighing functions. For patients who need to stay in bed for a long time, especially severe patients, a hospital bed with a weighing function should be used for weight monitoring. [0003] Chinese patent application CN102078184A discloses a method of body position monitoring using a weighing bed and its weighing bed. There are at least three force-measuring fulcrums between the upper and lower frames, so that reliable and stable support can be obtained between the bed body and the supporting frame and To ensur...
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IPC IPC(8): A61G7/00G01G19/44
Inventor 朱惠忠袁文龙肖文鹏杨永刚
Owner RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN