Temperature characteristic and compensation algorithm for a marine high accuracy piezoresistive pressure sensor

et al. 2023

Meas. Sci. Technol.

To solve the problem of the measured value of pressure scanners drifting nonlinearly with temperature change when measuring pressure, resulting in low accuracy, this paper proposes and develops a new calibration system based on neural networks for pressure scanners. Specifically, we start by calibrating the pressure scanner production process, then design the sealing device applicable to the working environment of pressure scanner, and finally install the calibration system of pressure scanner for calibration experiments, so that accurate measurement results can be obtained. In addition, at the algorithmic level, this paper proposes a whale optimization algorithm based back propagation (BP) neural network method instead of the traditional least squares method to complete the temperature compensation. Both the off-line compensation results and the compensated on-line experimental results show the high measurement accuracy of this temperature compensation method. The full-scale error (FS) is 0.07%, the coefficient of determination (R2) =99.27%, with similar results for all channels of the pressure sensor in the temperature environment -40°C to 60°C and absolute pressures ranging from 0 to 1.1Mpa. The result is not only a significant reduction in full-scale error of 0.25%, R2 =91.32% based on conventional algorithm compensation, but also applies to the pressure scanner with wide temperature region, wide range and high accuracy temperature compensation, which is important for its future research of low-cost overall calibration and high accuracy algorithms.

Section: Woa Optimizes Bp Neural Networkmentioning

confidence: 99%

“…A previous study proposed [18] that a dynamic chaotic quantum behavior particle swarm optimization algorithm can be optimized to reach temperature compensation rapidly and efficiently using multicore correlation vector machines. Moreover, another study [19] suggested a polynomial temperature compensation algorithm to improve the accuracy.…”

Section: Introductionmentioning

confidence: 99%

A novel whale-based algorithm for optimizing the ANN approach: application to temperature compensation in pressure scanner calibration systems

Wang

Zeng

et al. 2023

Meas. Sci. Technol.

“…For example, temperature drift of piezoresistive pressure sensors can be corrected by a temperature compensation algorithm. An algorithm developed by S.Wu can realize 0.03% accuracy in the range of −6~50 °C and a full scale 60 MPa range [ 112 ]. The results of the compensation algorithm are shown in Figure 10 .…”

Section: Commercially Available Ctd Sensorsmentioning

confidence: 99%

CTD Sensors for Ocean Investigation Including State of Art and Commercially Available

Xiao

Liu

et al. 2023

Sensors

Over 70% of the earth’s surface is covered by oceans; globally, oceans provides a huge source of wealth to humans. In the literature, several sensors have been developed to investigate oceans. Electrical conductivity temperature depth (CTD) sensors were used frequently and extensively. Long-term accurate CTD data is important for the study and utilization of oceans, e.g., for weather forecasting, ecological evolution, fishery, and shipping. Several kinds of CTD sensors based on electrics, optical, acoustic wave and radio waves have been developed. CTD sensors are often utilized by measuring electrical signals. The latest progress of CTD sensors will be presented in order of performance. The principles, structure, materials and properties of many CTD sensors were discussed in detail. The commercially available CTD sensors were involved and their respective performances were compared. Some possible development directions of CTD sensors for ocean investigation are proposed.

“…However, most published works show limited sensing performance in the sensitivity and operation range. For instance, a marine hydrographic survey calls for sensors in the operation range of 0–60 MPa and wind tunnel tests demand sensors in the range up to 2.3–43.4 MPa . Some biomedical applications also require a wide pressure operation range, such as the analysis of plantar pressure distributions up to 1.75 MPa and the stress tracking of dental implants under the impact of biting actions from 1.5 to 8.66 MPa .…”

Section: Introductionmentioning

confidence: 99%

Laser-Sculptured Hierarchical Spinous Structures for Ultra-High-Sensitivity Iontronic Sensors with a Broad Operation Range

Chen

ACS Appl. Mater. Interfaces

Zhu

et al. 2022

Tactile pressure sensing over a wide operation range (>1 MPa) is challenging for a variety of applications in fields such as aviation, oceanography, and biomedicine. Recently, innovative strategies have been utilized to improve the performances of tactile sensors using specially designed structures, dielectric layers, and electrodes. Here, a hierarchical structural design based on ionic gel films has been utilized to build iontronic pressure sensors with ultrahigh sensitivities and broad operation ranges. Sculptured patterns made by a controlled CO 2 laser scanning process have been produced on polyimide films to achieve two kinds of protrusion structures for high specific surface areas and strength to withstand high pressure. The iontronic sensor has been constructed by adding two screen-printed electrodes of high surface areas to achieve an ultrahigh sensitivity of 2593 kPa −1 and a wide pressure range from 0 Pa to 3.36 MPa. The prototype device also has a fast response and recovery time of 26 and 13 ms, respectively, and an excellent mechanical durability in the endurance test of over 2700 repeated loading and unloading cycles under a pressure of 1 MPa. Several application examples have been demonstrated, including the detection of physiological signals on human volunteers, the feedback control of intelligent robots, the grasping operation of underwater soft grippers, and the environmental wind-speed monitoring. As such, this work demonstrates a versatile and economical methodology to produce high-performance flexible sensors for various potential applications.