Sensor learns the applied characteristic in domain of science and technology and development trend in modern medical

Medical Massage For Hypertension

Sensor learns the applied characteristic in domain of science and technology and development trend in modern medical

Summary: Biology medicine sensor is the unit that changes medical physiology parameter into electricity quantity, an essential crucial part is in equipment of modern medicine instrument, involve the square respect area of domain of medical science and technology, to raising medical instrument the quality of equipment will have conclusive effect, and the development that the development of sensor technology drives certainly will and promotes modern medicine science and technology, applied perspective is very wide.

Keyword: Sensor; Medical application; Develop a tendency

1. overview

As the development of modern medicine science and technology, especially the ceaseless development of technology of electronic technology, computer technology, digital signal processing, drive and promoted the flying development of relevant science and technology, the development of medical science and technology is more such. The rapid development of technology of modern medicine electron, make a lot of advanced high-tech electron products are applied to domain of medical science and technology widely. Produced product of electron of medicine of of all kinds high-tech accordingly, if knife of gamma of stereo and directional whole body is treated system, PAT, MRI, multilayer much general of helix CT, color straps operation of lens of analyzer of supersonic large and diagnostic appearance, automatic biochemistry, antrum to treat image of system, medicine processing reachs transmission system to wait, the sensor technology that is used extensively in domain of medical science and technology is a very typical example. Medical sensor serves as collect life style to collect information " facial features " , its effect is increasingly distinct, got applied extensively, and the development as a result of sensor technology, drive and promoted the development of domain of medical science and technology.

The development of current society, it is the development of information society. To develop, must get pertinent information. Regard medical science and technology as the development of the domain, cannot leave the development of sensor technology, be in early 20 centuries 80 time, the United States thinks the world already entered sensor period; First what Japan labels sensor technology 10 old techniques; Our country also rates sensor technology the state " 85 " key science and technology tackles key problem project. This shows, sensor technology will get flying development in domain of medical science and technology.

The definition of 2. sensor reachs his to comprise

Alleged sensor, according to GB GB7665-87 the definition is: Be measured what experience a regulation, change into the parts of an apparatus of usable output signal or device according to definite pattern. This device is comprised by sensing element and changeover component normally. Sensing element is to point to to be able to be experienced directly in sensor (or answer) the part that is measured; Changing element is to show the sensing element in sensor is experienced (or answer) be measured, changeover becomes the part of comfortable Yu Chuangan and measured telegraphic number.

The classification of 3. sensor

The classified method of sensor has a lot of kinds, uses morer classification method has two kinds. It is the effect classification that is telegraphic date by commutation of exterior input signal, can divide accordingly for physical sensor, chemical sensor, biosensor; 2 it is to press sendout classification, can divide accordingly for displacement sensor, speed sensor, pitching moment sensor, pressure sensor, vacuum sensor of sensor, temperature sensor, humidity sensor, flow transducer, chroma, viscosity sensor, gas quick sensor, photosensitive sensor, magnetism quick sensor, fiber-optic sensor, ultrasonic sensor, the application that says sensor so gains ground extensively again already, have wide applied perspective.

Medical the applied everywhere in domain of medical science and technology sees sensor. The information that gathered a patient in the past basically relies on the doctor‘s sense organ, through looking, hear, ask, cut and simple examination will diagnose, 60 time begin 20 centuries built medical project, developed a large number of high-powered medical instrument device, replace and outspread the doctor‘s sense organ, be in as equipment of a large number of advanced high-tech medicine instrument the wide application in clinical medicine, raised whole to medical treatment is diagnosed and treat a level, just is medical sensor took on of equipment of instrument of modern medical treatment " information " . As a result of medical sensor is phyletic various, function each different, so it also follows certain classified principle, the basis is right of means of human body sampling different, cent is mix inside body two kinds of sensor outside body; It is physiology function by the different branch that checks a purpose (loop, breath) , clinical chemistry, morphology; Divide again by purpose of diagnosis and treatment wait for general examination, precaution and surveillance. Anyhow, as a result of different utility, different goal, different jumping-off place, can have different classified method.

The main use of 4 medicine sensor reachs applied range

Sensor is the main technology base of new technology revolution and information society, it is the trailbreaker of modern science and technology, it is current world‘s all in all high-tech, all modern high-tech instrument equipment cannot leave sensor almost. It is carried in spaceflight, aviation, scientific research, industry and agriculture, biology, medicine, traffic, the domain such as remote sensing of new material, new energy resources, marine science, military affairs, robot is producing main effect, application is very wide, especially the development be closely bound up of the industrial revolution of domain of medical science and technology and sensor technology. In medical instrument equipment sensor basically has the following kinds of use, it is opposite object undertakes checking, so that understand human body physiology deep function or undertake be diagnosticed correctly; 2 it is custody, determine namely inside the limits that whether parameter of human body physiology is in a regulation, so that observe the patient recovers process or appearing unusual when can call the police in time; 3 it is control, use the parameter of human body physiology that detects to control physiology process namely.

5 medical the sensor application in modern medicine domain

Medical sensor got applied extensively in modern medicine domain, involve the square respect area of equipment of modern medicine instrument, examine in image processing, clinical chemistry especially, the custody that life style asks for parameter is monitored, the diagnosis of disease of breath, nerve, heart and vessels and cure, use sensor gains ground very, as a result at making sensor omnipresent in equipment of modern medicine instrument.

The 5.1 application in X light diagnostic device

To increase the sensitivity of sensitive film, early used the paper of increase and decrease that is put in film around, its function matchs gender, graininess, bright lightness, contrast spectrally to wait by glow efficiency, film and glow affirmatory. Use CaWO4 to be raw material at present, should achieve tall sensitivity to must use the rare land such as Gd2O2S kind the paper of increase and decrease of fluorescent material.
Use X Guang Ying in recent years times smoother add a canal to form X photoelectricity to inspect, can acquire the orthoptic image of higher resolution, the digitlization of X ray information, add all sorts of image to handle a technology, already made X ray diagnoses ability to rise greatly.

The 5.2 application in CT machine

It is well-known that machine of X smooth CT diagnoses the tremendous skill inside the domain to affect in image, tackling key problem around smooth detector of heart area X at present, commonly used at X smooth detector form has:

(1) twinkle detector. This is photoelectron times add a canal or become, make of CT device detect efficiency rises greatly. (2) xenon enrages detector. Smooth CT of rotational type X needs to deploy 300~500 osculant detector, appropriate gets the Xe of information to enrage detector directly from discharge electric current at using, it is to use electrode of many smooth andante to join, seal 10~20 after atmosphere Xe is enraged, make, smooth to X sensitivity is quite tall. (3) semiconductor detector. Considering to use Si, CaAs, HgI2 to wait to detect at present material, but detect to X light as a result of its efficiency is not tall, still need to be perfected further.

The 5.3 application in nuclear medicine diagnostic device

Introduce the radio isotope inside human body, measure outside body those who give off! Ray, can diagnose malignant tumor, examine the function of splanchnic organ or pathological change, ray detects probe basically is used (NaI) twinkle implement the combination with PMT.

The 5.4 application in ultrasonic diagnostic device

Will contain suppress report brace up child probe adds pulse voltage to produce supersonic pulse. Basis by check object in, the differs to hand in an interface with the object reflection beam of acoustical impedance decides the appearance that be measured or function. The supersonic beam scanning in the past takes low speed hand, use scanning of high speed of mechanical electron type now, image of attainable hypostatic fault.

5.5 examine to apply mediumly in clinical chemistry

(1) optical sensor. The physical method with clinical the stablest assay uses optics to examine namely. Optical sensor is used generally mix at the electron microscope in all sorts of endoscope. (2) electrification learns sensor. Clinical chemical analysis uses smooth sensor more, but reagent and sample beard just have reaction via proper time. And electric chemistry measures formula fast and handy much, and can use at a variety of material to determine, can accomplish blame contact to determine again. Especially ionic alternative electrode and biosensor got greater progress.

5.6 in other equipment of modern medicine instrument applies mediumly

Sensor is omnipresent in equipment of modern medicine instrument, besides a few respects of above introduction, it still applies in equipment of a lot of modern medicine instrument, if breathe to measure and treat instrument, blood,dialytic device, multi-parameter guards sterilization of cabin of oxygen of instrument, high pressure, high pressure implement, heart telex guides the system measures instrument, neurological measuring instrument implement, device of cardiovascular system cure, do not list one by one here. Anyhow, medical the sensor application in modern medicine domain will be mixed more and more extensively thorough, its development also will be promoted and promote the development of level of science and technology of 21 centuries medicine.

The development trend of 6 sensor technology is looked into

Sensor is used mediumly in medical domain, hang on is designed and make a sundry high-powered sensor, from the point of the development trend of current and new and high technology, the development direction of sensor technology basically is in the following respects.

6.1 change develop to quanta wide

Of sensor detect the technology is in rapid and outspread, if use nuclear magnetic resonance (NMR) absorption magnetism sensor, use the sensor of alleged SQOTO magnetism of effect of abdicate of husband agreement a twenty-five-stringed plucked instrument, can measure give its very one of faint field is strong, use thermometer of thermal noise of effect of abdicate of husband agreement a twenty-five-stringed plucked instrument, can measure the low temperature that gives 0.00001K, these are quanta mechanical development achievement.

6.2 to compositive change, muti_function change development

As the development of semiconductor technology, had made sensing element and signal processing and power source part in now same base piece on, make detect thereby reach signal to handle unifinication. The physical sex variation that this kind of sensor uses certain solid data namely will realize information to alternate directly, compare with general sensor, have a structure simple, weight is light, volume is minor, answer speed fast, stability is good wait for a characteristic. In addition, still appeared at present the character, graph, object optics that has 2 dimension to distributing image is changed one kind into telegraphic date, the indication parts of an apparatus that perhaps changes telegraphic name into optical image, the changeover principle that they are benefit consumed forms reticulate structure.

6.3 change direction to develop to intelligence

Since the micro computer comes out, as the ceaseless hair of computer technology, those who use is ceaseless gain ground, the micro computer already applied in measuring a technology stage by stage, make sensor is mixed measure an instrument forward intelligence changes direction to develop, make traditional sensor and measuring instrument turn intelligence into masked buy, expanded greatly to use a function thereby, rose to measure precision, the device of modern medicine instrument that uses intelligence to change sensor technology has a lot of marked characteristics.

(1) data handles a function automatically. In can change sensor oneself, it can undertake metrical to all sorts of parameter that be measured not only, and can the basis is foregone the parameter that be measured, seek an other sealed parameter, can realize the function such as automatic zero, self-poise, automatic compensation, free span. Be in for example in containing flowmeter of compensatory of automation of temperature, pressure, when the temperature of the medium that be measured and pressure change, can give correction according to fair formulary consideration, keep abreast of and amend discharge to be worth, can rise so measure precision. So data can be accomplished handle at any time. (2) diagnose a function oneself. Diagnosing a function oneself is intelligence changes the function with distinctive sensor, it can is opposite through software of equipment undertook correctly detecting, so that discover fault in time, assistance diagnoses discovery breakdown germ. A lot of equipment have breakdown to diagnose a function oneself (analyzer of if CT machine, blood is dialytic machine, supersonic appearance, automatic biochemistry) , undertake indication with the form of breakdown code. (3) man-machine interaction function. Be together as a result of the computer and sensor and appearance combination at present, deploy all sorts of display unit and clavier, make the system has agile man-machine interaction function, cooperate operator guidance to work with interlocution means, simplified greatly not only so equipment, and still reduced operation and reading mistake, can undertake in time modification, increased systematic flexibility and dependability consequently. Major equipment has man-machine interaction function. (4) interface function. Because computer technology was used in sensor, make its interface is standardized, can undertake interface easily with computer of on one class so, such OK by remote central control computer will control whole system job. (5) show automatically and warning function. The computer is in charge of through interface and number or other monitor union rises, optional choose shows or time loop shows all sorts of measured value to reach concerned parameter, also can output by printer, through be being compared with set-point, warning function of the floor level on very easy implementation. (6) cut off the power protective function. As a result of the data inside computer RAM, the meeting when dropping report disappears automatically, this brings the use that gives a lot of instruments very big inconvenience, for this, influence medical apparatus in a lot of intelligence at present there is mothball power supply inside equipment, when the system drops report, after sensor is experienced, through control can automatic receive mothball power source into RAM, protective data is not missing.

Systematization of 6.4 progressively trends

Multidimensional pass feeling, intelligence to pass feeling, smooth information feeling, must form pass feeling system complexly, fictitious optics is formed to become in the computer through many sensor like the system, this kind of system general to muti_function change, miniaturization, multidimensional change, the way such as information processing computerization develops.

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