[introduction]In technology of high speed number drive below, quickstep of all sorts of complex medical treatment system develop, this also makes a lot of service of medical treatment domain promotes considerably on function, precision and efficiency. Medicine is become what wait for each medical treatment domains in division of orthopaedics, obstetric, nerve, cardiology like the system is inchoate there is crucial effect in detect and be being diagnosed. Special robot and system of long-range medical treatment can assist operation robot, hospital to medical treatment practitioner detects and diagnose a patient’s condition, promotion nurses quality, prolong the patient’s life even. Afore-mentioned all functions need to come true through signal of high speed number, the signal integrality that this also means whole system is all in all.

In technology of high speed number drive below, quickstep of all sorts of complex medical treatment system develop, this also makes a lot of service of medical treatment domain promotes considerably on function, precision and efficiency. Medicine is become what wait for each medical treatment domains in division of orthopaedics, obstetric, nerve, cardiology like the system is inchoate there is crucial effect in detect and be being diagnosed. Special robot and system of long-range medical treatment can assist operation robot, hospital to medical treatment practitioner detects and diagnose a patient’s condition, promotion nurses quality, prolong the patient’s life even. Afore-mentioned all functions need to come true through signal of high speed number, the signal integrality that this also means whole system is all in all.

Software innovation is ecbolic a hardware of number of more high speed

By the intelligent automation function of software drive, offerred main value for these complex medical treatment systems. The software in medical treatment equipment can be handled and purify is video dot of medium a confusion of voices, generate 3D video, train and use nerve network to undertake breaking up to image with classification. For example, nuclear magnetic resonance is become picture (MRI) use software algorithm can identify and highlight indication tumour or fracture to wait for unusual situation, help radiative family doctor make examine break.

The use as software increasingly grow in quantity, these complex medical treatment systems can in the application that deploy goes to to have challenge sex more and more. In these application, outstanding dependability, speed and low when delay crucial to ensuring client safety. This must promote with respect to the digital hardware property that means equipment, so that realize faster data to detect, data is collected and signal is handled, consequently need has more faster digital processor and video and chromatic processor, more high-speed memory, rapidder clock rate, higher frame rate, faster interrelate and advanced digital logic technology and much n believe your plan, include PAM4, PAM8, PAM16 and blame to clear (NRZ) logistic. In addition, network safety menace is increasingly serious in recent years, superintendency orgnaization also raised strict requirement to protecting patient privacy, these elements are driving whole industry to use digital hardware to finish data promiscuous, add wait for the task closely with effectiveness examination.

The addition of hardware of high speed number brought a challenge to the test

Hardware of number of many use high speed brought complex test challenge, incorporate is in the following respects. Small bit piles up the dependability that leads the safety that may affect a patient and medical treatment installation by accident, because how this identifies small bit,pile up by accident ratio is very crucial. Of data bulk add flavour of with special care to wear, although bit is piled up by accident rate is very low, bring about possibly also pile up by accident in great quantities, because be piled up by accident,can accumulate quickly along with time. Medicine is diagnosed rely on a system greatly individually yuan the accuracy that data transmits between parts of an apparatus. For example, wait in MRI or CT scanner use at what diagnose to become in resembling a system, what data is transmitted or medium wrong meeting brings about processing process to be generated by many number data is video and lack fidelity wait for a problem, cause likely by accident examine.

In hardware of high speed number, PCB circuit board density increases yuan of parts of an apparatus that go up, mean wiring space decrease, bring about what circuit ply counts to increase necessarily, test difficulty also can be increased subsequently. Yuan a furnish plan of parts of an apparatus is more compact, power density is higher, the likelihood causes circuit board local and calorific. However, medical treatment equipment needs rigid temperature control, ability ensures equipment function and patient safety, not perfect heat management may bring about overheat, yuan breakdown of parts of an apparatus or temperature lift caused function drops.

Hardware of high speed number still brings a few additional test challenges. Because clock rate and data pass those who lose rate to rise, eye graph is met to signal noise and shaken concessional error decrescent. Those who have more to cross aperture is multilayer circuit board need raises signal integrality through complex workmanship. In addition, yuan the promotion demand of density of parts of an apparatus goes line width narrow, compare with wider design, the possibility of occurrence accident starting a hole can increase. Because the space of wiring is compressed, the possibility that produces string of faze will be larger, because magnetic field is likely,inductive tension produces on whole return, and electric field forms parasitism capacitance possibly.

Undertake emulation before equipment is made indispensable

The test that to answer high speed number hardware faces is challenged, reduce the risk in medical treatment system, before the design consign production is produced, to circuit board carry undertakes emulation this link all right crucial. Although emulate a likelihood to cannot discover all and potential problem, all can discharge fish more problem with the best will in the world however, main effect is being produced in this respect. Undertake emulation having the following advantages to parts of an apparatus before production is made. It conduces to the actual performance that improves circuit board, cut the frequency that designs hardware prototype repeatedly, save time and cost thereby. Emulate the development rate that still can accelerate prototype, avoid pair of circuit board to have the modification outside the plan, test and record as far as possible. The wrong signal that still can eliminate to may be considered as breakdown by accident through emulating, push firmware and software test quickly thereby. Besides, solve these problems to wait for agreement of high number logic to having crucial sense to PAM4, PAM8, PAM16 and NRZ, because these agreements are right the concessional error of signal quality wave motion is smaller.

It is OK to use emulation software to complex high speed PCB circuit board undertakes signal integrality is analysed. Graph 1 revealed to use emulation software analysis to shake the give typical examples that cross-eye graph affects. It is OK to emulate software through using at the same time the loss of token signal net and power network is mixed coupling. Emulation software still can help an user extract and do not have seam transmit accurate electromagnetism (EM) model, so that be in ADS transient state and passageway simulator,use. The user still can pass emulation software to check line impedance quickly before undertaking EM is extracted, save time then. Can reduce privacy data of the patient or the risk of video occurrence mistake so.

Graph 1: Use emulation software analysis to shake the influence that cross-eye pursues.

Undertake after treatment of PCBA draw a design is finished signal integrality measures a content great

Engineer even if used signal to emulate software, extremely careful also ground finished wiring and printed circuit board package (PCBA) treatment of draw a design, but the matter that considers many sided, after the engineer still needs to be made in treatment, use oscillograph will measure the signal integrality of circuit board. Although followed technical index and norms demand, but yuan interior of parts of an apparatus or meeting are put in a few change, and software of signal integrality analysis cannot show its account thoroughly. In addition, yuan the parasitism imitate such as the impedance that parts of an apparatus has solid to have normally, capacitance and inductance is characteristic, these character do not have corresponding technical index. The surface is stuck outfit (SMT) of parts of an apparatus stick outfit craft to get easily the influence of all sorts of change, the likelihood brings about solder dish position of yuan of center of deviate of parts of an apparatus that go up. In addition, steel net craft is likely cannot constant landform becomes perfect solder piece, using continuously under, the measure that solder piles up will be narrow. If things go on like this, the chemical composition of solder and character may produce slight change, influence copper solder dish order union with the solder between SMT parts of an apparatus. Additional, the normal wave motion inside circumfluence furnace can affect the circumfluence character of solder. Although electric link was established on solder contact, soldering firmness is likely also and insufficient, part of existence ala body lacks the base that break solder, board carry array of bar of passive SMT resistor, ball (BGA) the phenomenon such as contact pillow effect. Making oscillograph is used to conduce to the signal integrality problem that be evaluated in the round and solves these elements to may be brought about after finishing.

Graph 2: Oscillograph analyses signal integrality problem.

Pass oscillograph to be able to let an engineer understand the daedal interaction in complex design. If the graph is shown 2 times, oscillograph can be measured at the same time reach 8 channels, check treatment to produce manufacturing PCBA to whether be put in signal integrality problem quickly thereby. The engineer can undertake through using oscilloscope spectrum of logistic analysis, real time is analysed (RTSA) , serial agreement analysis, weaveform is generated, frequency is answered and phasic noise checks. Because logarithm of medical treatment system occupies communication speed to have higher demand, because this meeting uses higher number,be defeated by the collateral data passageway with rate and lesser span as it is said. Come so, electromagnetism coupling (string together faze namely) can increase. In addition, power source will be right the noise of data passageway generation of their place drive and shake the interference of and so on; Conversely, noise also can produce an effect to power source related data, for example synchro switch noise (SSN) can bring about ground connection to rebound. Oscillograph can detect and quantify string of faze, judgement basically is what interference source caused string of trouble, still can detect and diagnose shake, perpendicular noise and phasic noise.

Epilogue

Digital technology is in high speed to resemble, diagnose, long-range medical treatment, individuation medical treatment and patient nurse wait for a domain to aided force to realize a series of advanced functions, changed complex medical treatment system thoroughly, brought mix more efficiently, more effectively the medical treatment that is a center with the patient serves. Making system of medical treatment of high speed number is a challenge from beginning to end. Be defeated by the raising of rate and video resolution as it is said as number, plus the brim computation is embedded by increasing ground among the system, want to maintain the signal integrality that matchs with application, the difficulty that engineer place faces also is increased ceaselessly. Through in PCB circuit board is machined emulation software is used before making, and the oscilloscope that contains powerful software function is used after treatment is made, can promote the product that has place to want effect and security to the market, reduce the risk that patient place faces.

About it is heart science and technology

It is heart science and technology (NYSE: KEYS) edify and endow with the person that can innovate, help strength they lead the technology that changes the world the life. Regard Er of general of a standard as 500 indexes company, we offer advanced design, emulate and check a solution, aim to help an engineer finish development and deploy quickly, control good risk at the same time. Our client pervades the market such as automation of global communication, industry, aerospace and national defence, car, semiconductor and general electron.

(author: It is Lorie Jurkovich of manager of market of solution of medical treatment of heart science and technology)

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