Automatic reading device and method for mercury thermometer

Abstract

Invented a mercury thermometer automatic reading device, and gave the corresponding reading method. The device is composed of a shell, a laser, a laser beam expander, a thermometer, a laser detector, a thermometer limiter, a diffraction screen, a circuit board and a single-chip microcomputer. The laser emitted by the laser is directly directed to the laser beam expander, and the laser beam expanded by the laser beam expander is directly directed to the diffraction screen, completely covering the narrow slit on the diffraction screen. The backlight side of the diffraction screen is located near the slit to install a thermometer limiter, and the thermometer is installed in the thermometer limiter. The laser light is diffracted by this slit, and the brightest vertical stripe in the middle falls on the laser detector. The thermometer reading can be calculated by collecting the current of each laser detector. The beneficial effects of the present invention are: 1. high measurement accuracy; 2. low cost; 3. can greatly reduce the work intensity of medical staff.

Description

technical field [0001] The invention relates to an automatic reading device for a mercury thermometer and a method thereof, in particular to an automatic reading device for a mercury thermometer without using a camera and an image processing method. Background technique [0002] At present, the daily temperature measurement of patients in the hospital ward still adopts the traditional method, that is, the medical staff sends the thermometer to each patient one by one, and after the patient completes the temperature measurement, they take it back one by one, and record the measurement results separately. The main disadvantage of this mode of work is the heavy workload. There are various electronic thermometers on the market. If you use this kind of thermometer to measure the body temperature of patients, the measurement results can be easily transmitted to the receiving equipment of medical staff. However, because mercury thermometers are more accurate than electronic thermom...

AI Technical Summary

Problems solved by technology

[0003] The method of converting the reading of the mercury thermometer into an electronic signal can be roughly divided into two categories. One is to use metal detection or similar methods. The advantage of this method is that it is simple and easy to operate, and the disadvantage is that the accuracy of the reading is low.

The other is to use the image recognition method, that is, the thermometer detection method based on machine vision. The camera collects the image and transmits the data to the computer. The computer performs various calculations on the preliminary processed signal. The advantage of this method is that the reading is accurate. The disadvantage is that the camera is expensive

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