The Resistance Temperature Detector (RTD) signal processing circuit is an important part of the RTD temperature measurement module. In this paper, the RTD processing signal circuit with a dual redundant design is developed, which realizes the high-precision by the symmetrical design of the circuit layout and the precision control of components to ensure the consistency of the two outputs, and the error of the two output voltages is less than 0.36%. Meanwhile, the circuit adopts high-density thick film hybrid integration technology to realize circuit miniaturization. It is verified that the output voltages accuracy of the circuits for mass production is less than 0.19% at room temperature of 25°C, less than 0.39% at high temperature of 125°C, and less than 0.27% at low temperature of -55°C. The size of the circuit is only 14.40mm×14.40mm×3.55mm. This circuit can be widely used in the field of miniaturized and high-precision temperature measurement as a key device of high-reliability and general-purpose RTD temperature measurement module.
The accelerometer servo circuit is one of the important components in the inertial measurement system. Based on the working principle of the quartz flexible accelerometer and the composition of the hybrid integrated quartz flexible accelerometer servo circuit, this paper developed a quartz flexible accelerometer servo circuit with low power consumption and high integration using a linear stabilized power supply servo transconductance/compensation amplifier. The development of this circuit has guiding significance for the development of the traditional quartz flexible accelerometer servo circuit.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.