Currently, one of the trends in the medical device industry is miniaturization, which is to develop smaller, more portable devices to meet the limited space of hospital and home health care spaces, enabling healthcare professionals to quickly and easily move devices from one patient to another. One patient.
For example, ventilators, diagnostic equipment, suction equipment, etc. are gradually being improved to accommodate this trend change.
However, device miniaturization is a challenge for medical device designers to not only reduce the size of their products, but also to design devices that enable a variety of configurations and care settings. As a result, sensor manufacturers are beginning to meet the need for device miniaturization by offering flexible mounting options, smaller size, and integration of multiple sensor functions into one package.
As a negative pressure wound treatment for the miniaturization of pressure sensors, sensor miniaturization can provide high reliability and excellent quality while minimizing product cost. Medical device manufacturers can use the same basic sensor in a variety of wound care products, and designers can scale the output to meet the specific needs of the application.
Honeywell's NBP series of pressure sensors are small enough to fit on tightly spaced printed circuit boards or small devices to meet the space requirements of portable home health care products.
In addition, scientists from the University of Toronto in Canada have invented a new type of medical sensor that can be hidden under painted tattoos to monitor the body's metabolism and fatigue by measuring changes in pH (pH) on the skin. By using different sensing materials, the tattoo can also be used to detect other components in the sweat.
The sensor is thin and soft and can even be hidden in a cartoon picture, made into a sticker, and the child can attach it to the arm. Taking this cartoon sensor as an example, the eye functions as a working electrode and a reference electrode, and the ear is a connection point of the measuring device.
Smart sensor applications are more widely used
Today, with the advance of the times, intelligent sensors should be born. Sensors are widely used in automotive, industrial automation, aerospace technology, military engineering, environmental detection and other fields. Nowadays, the emergence of smart sensors has further expanded the scope of the application, and smart sensors can be used in the future.
Based on a priori knowledge of given traditional sensors and environmental conditions, the processor uses digital calculations to automatically compensate for signal distortion caused by traditional sensor hardware linearity, nonlinearity and drift, and environmental influences to optimally recover the signal under test. The calculation method is implemented in software to achieve the purpose of software compensation for hardware defects.
Based on a given mathematical model of indirect measurement and combined measurement, the intelligent processor uses the compensated data to calculate physical quantity values ​​that cannot be directly measured. The statistical properties and parameters of the measured object population can be calculated using a given statistical model. Using known spreadsheets, the processor can recalibrate sensor characteristics.
Smart sensors are becoming more and more widely used in different fields, and now they are also playing a role in smart home and car networking. Let's take a look at two smart sensors in different application areas.
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