CN203483440U

CN203483440U - Low-noise bone mineral density measuring instrument

Info

Publication number: CN203483440U
Application number: CN201320562660.XU
Authority: CN
Inventors: 吕尤鸿
Original assignee: GUIZHOU XINDONG MEDICAL SCIENCE & TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: GUIZHOU XINDONG MEDICAL SCIENCE & TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2013-09-11
Filing date: 2013-09-11
Publication date: 2014-03-19
Anticipated expiration: 2023-09-11

Abstract

The utility model provides a low-noise bone mineral density measuring instrument which comprises an X-ray bulb tube, an X-ray detecting plate, an exposure regulator and the like. The X-ray detecting plate is arranged on the lower side of a mechanical frame. A sliding rail is arranged on the upper side of the mechanical frame. A sliding block is arranged on the sliding rail. A high-voltage generator is arranged on the sliding block. The explosion regulator is arranged at the back end of the high-voltage generator. The X-ray bulb tube is arranged at the back end of the explosion regulator. A collimating needle is arranged in the X-ray bulb tube. A light bundling device is arranged on the lower side of the X-ray bulb tube. According to the low-noise bone mineral density measuring instrument, the exposure regulator, the collimating needle, and a differential amplifier are further arranged, the exposure regulator can regulate the dosage of X-rays and maintain best exposure parameters, the collimating needle can aim at and shoot a shooting part so as to reduce quantum noise caused by X-ray scattering, and the differential amplifier greatly reduces noise generated by technology operation so as to improve image quality. The low-noise bone mineral density measuring instrument has great significance on bone substance analysis and disease diagnosis.

Description

A kind of low noise bone density meter

Technical field

This utility model relates to field of medical, relates in particular to a kind of low noise bone density meter.

Background technology

The most general bone density meter is to see through human body imaging on x-ray detector by x-ray at present, thereby carry out measurement and the diagnosis of sclerotin, in the process of opto-electronic conversion, the swimming signal that not only contains tested light radiation, also be accompanied by useless noise signal, the existence of these noises greatly reduces the detectivity of detector, and picture quality is an important symbol of reflection machine performance, and noise level is and the closely-related performance parameter of image quality, it directly affects and is limiting the resolution of instrument to low contrast material space, noise mainly contains thermal noise and quantum noise etc., existing bone density meter is not also very perfect for the processing of noise, when adopting unsuitable exposure parameter and high scattering, the contrast of image seems to be met, but the granule that can make image seems more coarse, directly have influence on the measurement diagnostic result of bone density meter.

Summary of the invention

According to above technical problem, this utility model provides a kind of low noise bone density meter, comprise machinery frame, slide rail, slide block, high tension generator, X-ray bulb, light concentrator, X-ray detecting plate, output interface, single-chip microcomputer, supervisory keyboard, LED display, it is characterized in that: also comprise collimation pin, differential amplifier, exposure actuator, described machinery frame is provided with output interface, supervisory keyboard, LED display, described machinery frame downside is provided with X-ray detecting plate, described machinery frame upside is provided with slide rail, described slide block is arranged on slide rail, described high tension generator is arranged on slide block, described high tension generator rear end is provided with exposure actuator, described exposure actuator rear end is provided with X-ray bulb, in described X-ray bulb, be provided with collimation pin, described X-ray bulb downside is provided with light concentrator, described X-ray detecting plate is connected with differential amplifier, described differential amplifier, collimation pin, exposure actuator, high tension generator is connected with single-chip microcomputer.

Described output interface is connected with external display device by cable.

The beneficial effects of the utility model are: this utility model improves on original bone density meter, increased exposure actuator, collimation pin, differential amplifier, exposure actuator can detect the x-ray dosage of transmitting, and by changing the voltage of high tension generator, the dosage of x-ray is automatically adjusted, to guarantee to maintain a best exposure parameter, the quantum noise of having avoided the variation of light intensity to cause, collimation pin can aim at shooting to taking position, reduced the quantum noise that the scattering due to X-ray causes, differential amplifier has weakened the noise that technical operation produces greatly, the acoustic noise reducing of each side has also improved picture quality, for the analysis of sclerotin and the diagnosis of disease, there is very important meaning.

Accompanying drawing explanation

Fig. 1 is this utility model structural representation;

The specific embodiment

Shown in Fig. 1, this utility model is further described:

As Fig. 1, machinery frame-1, slide rail-2, slide block-3, high tension generator-4, X-ray bulb-5, light concentrator-6, X-ray detecting plate-7, output interface-8, single-chip microcomputer-9, supervisory keyboard-10, LED display-11, collimation pin-12, differential amplifier-13, exposure actuator-14;

Embodiment 1

This utility model comprises machinery frame 1, slide rail 2, slide block 3, high tension generator 4, X-ray bulb 5, light concentrator 6, X-ray detecting plate 7, output interface 8, single-chip microcomputer 9, supervisory keyboard 10, LED display 11, collimation pin 12, differential amplifier 13, exposure actuator 14, machinery frame 1 is provided with output interface 8, supervisory keyboard 10, LED display 11, slide rail 2 is arranged on to machinery frame 1 upside, high tension generator 4 is arranged on slide block 3, in high tension generator 4 rear ends, exposure actuator 14 is installed, collimation pin 12 is arranged in X-ray bulb 5, again X-ray bulb 5 is arranged on to exposure actuator 14 rear ends, again light concentrator 6 is arranged on to X-ray bulb 5 downsides, then slide block 3 is arranged on slide rail 2, X-ray detecting plate 7 is arranged on to machinery frame 1 downside, finally X-ray detecting plate 7 is connected with differential amplifier 13, by differential amplifier 13, collimation pin 12, exposure actuator 14, high tension generator 4 is connected with single-chip microcomputer 9.

Embodiment 2

During use, single-chip microcomputer 9 is controlled high tension generator 4 transmitting high-voltage signals, X-ray bulb 5 is converted into optical signal transmitting by the signal of telecommunication, 14 pairs of x-ray dosage of exposure actuator detect, and feed back to single-chip microcomputer 9, according to predetermined best x-ray dosage, automatically regulate the signal of telecommunication of high tension generator 4, thereby control the dosage of x-ray, collimation pin 12 aims at for measuring point, x-ray carries out Shu Guanghou by light concentrator 6 and sends, see through tested position, and receive imaging at X-ray detecting plate 7, X-ray detecting plate 7 is converted into the signal of telecommunication by the optical signal receiving, send into differential amplifier 13 and carry out differential noise reduction process, importing single-chip microcomputer 9 into carries out further after accurately processing again, by cable, output interface 8 is connected in external display device and is shown.

The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of this utility model principle; can also make some improvement, these improvement also should be considered as protection domain of the present utility model.

Claims

1. a low noise bone density meter, comprises machinery frame (1), slide rail (2), slide block (3), high tension generator (4), X-ray bulb (5), light concentrator (6), X-ray detecting plate (7), output interface (8), single-chip microcomputer (9), supervisory keyboard (10), LED display (11), is characterized in that: also comprise collimation pin (12), differential amplifier (13), exposure actuator (14), described machinery frame (1) is provided with output interface (8), supervisory keyboard (10), LED display (11), described machinery frame (1) downside is provided with X-ray detecting plate (7), described machinery frame (1) upside is provided with slide rail (2), described slide block (3) is arranged on slide rail (2), described high tension generator (4) is arranged on slide block (3), described high tension generator (4) rear end is provided with exposure actuator (14), described exposure actuator (14) rear end is provided with X-ray bulb (5), in described X-ray bulb (5), be provided with collimation pin (12), described X-ray bulb (5) downside is provided with light concentrator (6), described X-ray detecting plate (7) is connected with differential amplifier (13), described differential amplifier (13), collimation pin (12), exposure actuator (14), high tension generator (4) is connected with single-chip microcomputer (9).

2. according to a kind of low noise bone density meter claimed in claim 1, it is characterized in that: described output interface (8) is connected with external display device by cable.