Development of high Precision Temperature Sensing device by MURATA
With miniaturization of electronic equipment and with their increasing mounting density, temperature control is becoming an ever vital issue to tackle. Also use of lithium-ion rechargeable batteries as the energy source for electronic equipment such as note-size PCs and electronic tools and HEVs is becoming more common creating a stronger demand for overheat detection of their battery cells. To address this need Murata manufacturing has developed and commercialized “Thermo-String” a tiny high-precision temperature sensing device which uses Chip POSISTOR or a chip NTC thermistor as the detector element.
The newly developed Thermo-String is capable of temperature sensing even in a tight space due to its ultra small sensing device at less than 1.6 x 0.8 mm and coated lead wire with flexible length between 25mm and 150mm. A Chip thermistor which has been used as the detector element enables a lineup with an extensive range of resistance and B-values which is a constant representing the variance in resistance corresponding with the temperature. The production of this device has already begun at 300 thousand units per month with sample pricing of 20 yen per unit.
source
Comments
2 Responses to “Development of high Precision Temperature Sensing device by MURATA”
[...] it would lengthens battery operation time in mobile devices. The product is targeted to be used in note-PCs, netbooks, MIDs, Mobile phones, Digital still cameras and Portable audio players. The newly chip [...]
[...] Murata Manufacturing made an announcement on development of world’s smallest and thinnest (4.7×4.7×2.4mm) surface mount pyroelectric infrared sensor, “IRS-B series”. The newly developed infrared sensor was response to mass production and cost reduction of reflow surface mount type sensors. Furthermore, it will pave the way for introduction of the human presence sensor for consumer equipment, while contributing in overall reduction of equipment size. Murata’s development of surface mount type sensor technology was fueled by increasing market demand for human presence sensing in various applications such as energy conservation, theft prevention, appliances and care-giving that bears a smaller form factor for easy and automatic surface mounting, with reduced production cost. IRS-B series is approximately 50% smaller in volume and 10% thinner than company’s previous surface mount model. Furthermore, compared with common lead-type models, it is significantly smaller, offering a lower profile which is approximately 20% less in volume and 50% less in thickness that the previous products. Murata has also developed a extremely flat curvature of the “flat lens” along with “IRS-B series”, contributing to streamline the equipment design. Among some of the application for this newly developed sensors are; TVs, Air-conditioning units, digital photo frames, PCs, automatic switches for lighting systems, webcams (IP cameras), automatic hot water flushing toilet seat, security equipment, Eco-friendly applications to name a few. The new sensor’s operating temperature is from -40 to 70 degrees Celsius and storage temperature ranging from -40 to 85 degrees Celsius. The sale of new sensor has already begun with monthly production of 1 million units at a price tag of 200 JPY per unit. source Share and Enjoy: [...]