Portable medical integrated MCU becomes a trend

2022-05-17
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Portable medical: integrated MCU becomes a trend

with the intensification of population aging, the improvement of national health awareness and the implementation of the new medical reform policy, portable/home medical electronics have sprung up in recent years, with considerable growth space, which also drives the demand for chips such as MCU

at present, in household medical equipment, chips mainly include MCU, some interface chips and a/D conversion. Now some manufacturers integrate a/D into MCU. Due to the relatively simple test complexity of household medical electronic equipment compared with hospital equipment, 8-bit MCU is sufficient for some medium and low-end products such as sphygmomanometer and blood glucose meter. However, with the development of the market, there are several development trends worthy of attention:

one is the universal testing machine for large storage and processing energy, unidirectional pulsation fatigue testing machine, impact testing machine and so on. In order to store more data, such as the test data storage of patients for more than one month, and now some relatively complex devices are required in the global market. For example, American families require ECG and other monitoring devices, which requires higher performance of medical devices, graphic display function, large storage capacity and wireless connection support. Therefore, MCU is required to have greater processing capacity and higher parallel processing capacity, As well as highly integrated, fast and accurate computing power, 8-bit MCU will be replaced by 16 bit and 32-bit MCU. In the past, MCU and graphics processing chip GPU were separated, but with the design size requirements of household medical equipment becoming smaller, integration is also a trend in the future

Second, low power consumption. For household medical equipment, the power consumption requirement is very high. For example, when nurses take medical equipment to visit their families, they may need to visit many users a day, which requires that the battery of medical equipment can last for at least one day, which has a high demand on the battery endurance. This innovative technology is based on the utilization of a thermal latent curing agent material, and also requires the ultra-low power consumption design to be considered in the design of power management chip

the third is security. In order to prevent hackers from invading and accessing patient data, encryption technology needs to be implanted into the chip to make the chip have authentication function. This high security chip is in great demand in the market. For medical electronic solution providers, understanding and grasping the relevant standards, certifications and specifications of the medical electronic industry and running them through the design and management of the solution is far more competitive and strategic than increasing the functions of products

Fourth, remote chip management. Through the Internet remote update program and remote delete patient information, this requires MCU to have stronger secure communication ability

fifth, multi MCU parallel operation and mutual communication capability. With the complexity and versatility of instruments and equipment, usually a device will have multiple MCU, and the effective communication between them will be very important. Standard MCU communication protocol shall be established

sixth, support medical data exchange standards, especially hl7v3 standards, so that the equipment can be directly connected to public health information

in addition, in addition to basic household medical equipment, there is also a great demand for nursing equipment for the elderly and chronic disease management equipment in medical electronics. In addition to monitoring the body, the nursing equipment for the elderly also needs to monitor the posture. For example, the elderly can't fall. If they fall, it may lead to stroke, so they also need position monitoring. Chronic disease management requires long-term measurement and monitoring, such as hypertension, diabetes, etc., and some data need to be stored for 10 or even 20 years, and the equipment will be miniaturized. All these put forward higher requirements for MCU. In the future, the development of integration, networking, digitization and intelligence will also become the catalyst for the rapid growth of portable medical electronics. In the future, MCU will accelerate the elimination of backward devices; Relying on the advantages of existing resources and industrial foundation, the integration will be higher, which will reduce power consumption and greatly reduce the cost

in addition to MCU, sensors also need greater development, with higher requirements for accuracy and reliability, and even more than military products. There are mainly pH sensors, optical sensors, electronic sensors, etc. How to organically combine these sensors with MCU will be a real test for medical equipment manufacturers

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