[introduction] will 3 years defy the experience of new coronal virus, let the value that people realizes adequately to oneself health manages, drove the application of equipment of portable medical treatment in domestic environment from this. Because can be monitored remotely, blame invade type, it is the equipment of portable medical treatment that can apparel even, the life style that can provide a basis for people at any time collects the data that monitor, reduce people effectively to be opposite healthy angst and the frequency seeing a doctor that heads for a hospital.

Will integratedly look, the adoption of equipment of portable medical treatment is led rise to basically result from considerably two big factors. Be new technology above all add hold, use accuracy and gender, easy visit sex actually through rising significantly in the new technology that introduces in equipment. Next, release according to U.N. economy and ministry of social general affairs ” world population was looked into 2022 ” report, the whole world will have 771 million person 2022 year full 65 years old, to 2030 the whole world will have 994 million old people, to 2050 this one word will be achieved 1.6 billion, as the rapid growth of amount of population of global old age, the demand that monitors to healthy state also becomes the another main factor that grows to drive market of equipment of portable medical treatment.

In applying actually, the action of equipment of portable medical treatment is not just check and monitor parameter of a few physiology, some equipment return record be giftinged and data analysis function now. For instance, electronic tonometer, in simple and apace is finished after measuring, it will measure a result to appear intuitionisticly to be measured currently not only personnel, still can store these data at the same time reserve, track the purpose that blood pressure changes for a long time in order to achieve. Present insulin plan match stock communication port mostly (IR/ is wireless) , the data that can measure real time transmits PC or insulin pump, provide auxiliary function to carry out long-term remedy.

Can see, be based on the consideration that applies setting, equipment of portable medical treatment is batteries power supply, dimension mostly small, operate easily hold facility, no matter equipment of how cabinet portable medical treatment also is ” completely of the five internal organs ” accurate electron product. Accordingly, the engineer can not feel relaxed when designing this kind of product, the face has a lot of to design skill here.

Market of equipment of portable medical treatment is analysed

In going a few years, equipment of portable medical treatment (PMD) use increasingly extensive, the combination of a variety of elements, include the technical progress, pressure that reduces communal and wholesome cost and the desire that let more extensive patient group can achieve wholesome solution, promoting the growth of PMD market.

The research of Research And Markets discovers, the income of market of equipment of portable medical treatment will reach the whole world 2022 57.3 billion dollar. Came 2022 2027 forecast period inside, market general with of 9.2% dovish and compound year increase rate grows. To 2027, the total market prise of market of equipment of portable medical treatment will reach 96.93 billion dollar. Differentiate by product type, to 2027, the product that is used at diagnose and monitoring a purpose is adjacent to the contributive rate of the market 44% , predict dominant market of equipment of whole portable medical treatment. Came 2022 2027, asia-Pacific area is portable of market of medical treatment equipment compound year increase rate will be achieved 10.4% .

Graph 1: Portable medical treatment and sanitarian equipment market predict the whole world to will be achieved 2030 1, 37.43 billion dollar (graph source: Data Bridge Market Research)

The analysis of Data Bridge Market Research makes clear, portable 2022 medical treatment and sanitarian equipment market are 64.58 billion dollar, predict to will be achieved 2030 1, 37.43 billion dollar, came 2023 during 2030, compound year of increase rate for 9.9% . Among them, can apparel of equipment and other portable technology gaining ground increasingly is one of crucial factors that promote market growth, the healthy situation that uses these device at monitoring a patient remotely still can reduce medical treatment cost effectively.

Equipment of portable medical treatment devises challenge and solution

The challenge that equipment of portable medical treatment faces currently is, it should have long-range join function not only, still need to maintain all mass that collect data and noise to answer at the same time ability, of course, portable sex also should become key consideration. Have ” portable ” medical treatment equipment this one view, the device of large medical treatment that basically uses relative to the hospital, the equipment of the hospital is round of type mostly, move it is more difficult to rise. Today’s ” portable ” medical treatment equipment goes to the lavatory not only carry, still be more very even ” can apparel ” . These change brought a lot of challenge to the design work of stylist.

If we undertake to equipment of portable medical treatment ” anatomize ” can discover, having a few function piece is equipment of most portable family expenses and consumption medical treatment is current, namely: Small controller of the enlarge that biosensor, sensor inputs and modulus changeover, batteries and power source management, low power comsumption or digital signal processor (DSP) , user interface or show, man-machine interface (HMI) and data interface (wireless and wired) .

Graph 2: Facility of portable medical treatment is main the system forms block diagram

(graph source: Network)

Small controller (MCU)/DSP

Equipment of portable medical treatment can generate a large number of primitive data, save and the processing data, main function that identifying the change, link that provides feedback, support and large system and the ability that carry out diagnostic algorithm is systematic small controller normally. However, exceed low power comsumption and high-powered often be mutual contradiction, the process is here medium, it is very important that with the means of the balance consideration system treats requirement and power comsumption tie.

If series of Ying Feiling PSoC 62 is the assembly of Arm Cortex-M4 and Arm Cortex-M0+CPU, this product is based on exceed platform of 40nm of low power comsumption, have low power comsumption to shine put a technology, but the technology that process designing number and imitate resource and top-ranking CAPSENSE use at feel and be close to application. PSoC 62 has those who be as high as 2MB to shine put, make medical treatment / sanitarian equipment can realize a variety of functions on platform of a low power comsumption, shirt-sleeve, graph shows the sensor that includes health to diagnose to wait with intuitionistic user interface. In security aspect, inside buy hardware adds close accelerator, memory and periphery protection unit. It is one is only can apparel the household of equipment of equipment, portable medical treatment, intelligence low power comsumption that apply and designs is small controller.

Graph 3: Block diagram of system of PSoC 62 set

(graph source: Ying Feiling)

From the point of the framework, the MAX32690 small controller of Analog Devices is a belt of FPU small controller and BLE 5 piece go up system (SoC) , have memory of SRAM of Arm Cortex-M4F CPU, large Shan Cunhe and new generation Bluetooth 5.2. This equipment will be handled ability and can apparel the join sex couple that equipment application needs rises. RISC-V kernel can handle task of sequential key controller, make programmer need not fear blue tooth interrupts defer. Add close kit (CTB) provide advanced and safe function, include to be used at algorithm of sign one’s name of number of fast and elliptical curve (ECDSA) MAA, advanced increase close level (AES) safety of Ha Xihe of engine, TRNG, SHA-256 conducts to load program. In-house code and SRAM space can pass two 4 SPI on the spot to carry out (SPIXF and SPIXR) interface expands piece outside, every interface is most 512MB.

Graph 4: System of MAX32690 small controller simplifies block diagram

(graph source: Analog Devices)

The crucial design consideration of equipment of portable medical treatment is low power comsumption, this is to stem from those who need to prolong battery life to think. Other requirement still includes faster appear on the market time, low cost, dependability, small size and taller compositive degree. All function tie that the SmartFusion FPGA of Microchip company wants place of personnel of design of equipment of portable medical treatment arrives in a chip, created true but solution of process designing SoC, smaller than traditional fixed function controller has bigger flexibility.

The core of SmartFusion equipment is embedded kernel of ARM Cortex-M3 processor. Pass its hardware multiplier and divider, this 32 RISC processor offerred high-powered: Make an appointment with 125 Dhrystone MIPS. Design of portable medical treatment must join directly with all sorts of biosensor, of SmartFusion FPGA but part of process designing imitate or imitate front (AFE) the element that contains place to need, be like modulus converter (ADC) with digital-to-analogue converter (DAC) .

Every SmartFusion FPGA includes 3 at most 12 successive approach register (SAR) ADC, can fall in 12 mode with 500Ksps (the 550ksps below 10 mode, the 600ksps below 8 mode) move. To process the signal of another direction, every equipment deployed a first-order ∑ – Δ DAC, offer 12 efficient resolution with the speed of 500Ksps. Mix besides MCU, FPGA can configure imitate besides, smartFusion FPGA is compositive still memory of SRAM of many Shan Cunhe and comprehensive clock are generated and manage circuit. Processor and its peripheral equipment pass a many high-powered bus line (AHB) matrix (ABM) interrelate. ABM still was offerred for processor and its peripheral equipment mix with FPGA structure embedded the method that imitate function corresponds.

Graph 5: Block diagram of SmartFusion FPGA system

(graph source: Mouser)

Batteries and power source management

To equipment of portable medical treatment character, simple system because power comsumption is very low can use one-time cell, older system needs those who use all sorts of different measure to be able to charge batteries and batteries group. When need uses medical treatment system, always time does not wait to charge. Management of way of dynamic power source and other function can be in to systematic power supply while independent ground charges for batteries, and batteries need not wait to charge before move. The service life of equipment of portable medical treatment is potential from number day, a few months, differ to several years even, accordingly, power source optimizes a design to have challenge sex quite.

MAX14663 is to take the power source of facility of portable medical treatment that cable detects to manage a solution, compositive a charger of efficient switch of ion of single cell lithium, apply to the portable application with limited space (for instance appearance of portable blood sugar) . MAX14663 embedded patent ModelGauge, can accurate estimation can charge the usable capacity of lithium ion batteries. In addition, compositive still step up converter and LED electric current are absorbed implement, use at be OLED monitor or LED to be in a poor light power supply. Internal cable detects circuit makes MAX14663 can identify whether to exist not electrify / not connective USB cable. Portable system can use this information to come to intelligent ground choose its to operate mode, promote precision thereby and reduce measure an error. MAX14663 still includes a kind to exceed low power comsumption sealed mode, can reduce significantly need machine electricity, maintain batteries n during storing for long. This mode extended the expiration period of batteries, improved client experience through opening box to use instantly.

Graph 6: Functional-block diagram of MAX14663 representative application

(graph source: Analog Devices)

Data interface

Now, the data interface of equipment of electron of portable medical treatment has been been from change of wired RS232 interface wired with join of wireless aether net, stone’s throw and Sunday run wireless join. New interface can realize the couplet net of all equipment in the building, include the facility in patient home.

Silicon Labs was offerred for equipment of portable medical treatment a variety of compact model wireless solution, for example the low power comsumption of EFR32BG22 blue tooth that dimension is 4×4 X 0.3 Mm (BLE) SoC. BG22 is the one part of platform of wireless Gecko series, have exceed outstandingly low transmit and receive power and high-powered. Among them BGM220S is the module of blue tooth of low power comsumption of RF attestation, deserve to have aerial, dimension is 6 X 6 Mm. The combination of outstanding RF technology and kernel of Arm Cortex-M33 of low power comsumption provided outstanding energy efficiency, can make battery life lengthens button to amount to 10 years. In addition, compact model module and SoC can design smaller, more absorbing equipment neatly, it is the space with memory and batteries larger put apart. The target application of this SoC includes blue tooth door lock of node of meshy network low power comsumption, portable Medical Protection and gymnastical equipment, intelligence.

Graph 7: EFR32BG22 system block diagram

(graph source: Silicon Labs)

Indication technology

Design an engineer as, monitor choice is height is preferential, indication module is expressed on behalf of BOM normally the first, the 2nd or the 3rd costly project. The monitor in equipment of portable medical treatment chooses to also must follow pattern of Morpheus of low power comsumption, most monitor drive can be had exceed mode of low power comsumption, and can be in a poor light through using PWM control comes reduce brightness, perhaps fall in the circumstance of OLED technology, need to use right order or register setting only.

Feeling screen is controlled (TSC) it is implementation the crucial factor of sex of advantage of equipment of portable medical treatment, it replaced traditional clavier, reduced the integral size of equipment greatly. The functional choice that TSC realized menu drive, input outputs the fine tuning that data shows and enlarge, what enhanced equipment significantly is easy with the gender. What what choose a solution is electrostatic (ESD) the main factor that processing capability is consideration of the need when executive TSC.

Sensor interface and signal catenary technology

Correct signal cable length is very important to reading of temperature, pulse, blood sugar and other biosensor. In great majority application, the architect tries to find signal of class of small bend over in millivolt noise. Because the AC of target signal is characteristic, need has with connect filter wave plan high to cooperate good amplifier, and the modulus converter with superior performance. Now, on the market a few compositive in spending more expensive MCU product to draw these functions the product already, made the SoC solution with powerful function, for instance in front the SmartFusion FPGA of Microchip company of the introduction.

Epilogue

The characteristic of equipment of portable medical treatment depends on his the sensor technology with low power comsumption, dependability and efficient economy. They conduce to inchoate discovery all sorts of diseases, include diabetic with cardiovascular disease, the use of these portable equipment reduced the number seeing a doctor of the user. Equipment of will portable medical treatment is used at Medical Protection industry, can simplify to nurse with what improve a patient process, they nurse those who come from hospital or doctor office in taking user home, offer more advantage for the patient.

Nowadays, equipment of portable medical treatment is monitored in the whole world and field of state of administrative medical treatment is producing crucial effect. More and more equipment adopt new technology help strength, for instance compositive new wireless communication technology, arise thereby more the equipment of net of intelligence, intuitionistic, couplet is to be able to apparel even equipment. And these equipment are participating in pair of people health widely monitor and track a course, some still is become even additional diagnostic tool. Be based on these change, the systematic design of equipment of portable medical treatment also wants follow closely tendency of the market, want to have on sex of performance of power comsumption, system, join, cost and dimension think adequately, the job that designs staff allows to weigh and the path is far.

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