4results about How to "High-precision acquisition" patented technology

The invention relates to the technical field of aquaculture environment monitoring, in particular to an aquaculture water quality real-time monitoring and early warning system based on the Internet of Things, which comprises a water quality parameter acquisition and preprocessing module, a water quality data wireless transmission module, a multi-parameter water quality analysis and prediction module and a multi-stage water quality early warning and regulation suggestion generation module, wherein the water quality parameter acquisition and preprocessing module is used for acquiring key water quality parameters in a water body in real time based on an anti-pollution sensing chip array optimized by a wafer-level test and manufacturing process, and performing preprocessing and preliminary analysis on an original signal. According to the invention, high-reliability and high-precision acquisition and preliminary regulation of key water quality parameters in a complex culture water body are realized through wafer-level manufacturing process optimization, simulated culture environment stress testing and multiple signal preprocessing technologies.

The invention discloses a low-voltage power grid insulation monitoring method and low-voltage power grid insulation monitoring equipment, a PT opening triangular part and a zero-sequence current transformer are specially configured for a 400V low-voltage power grid, and two paths of analog signals of zero-sequence voltage and zero-sequence current of the power grid are synchronously collected; the analog signals are transmitted to an acquisition processing circuit module, and are converted into zero-sequence voltage and zero-sequence current digital signals carrying vector phase angle digital quantity information through low-voltage filtering and analog-to-digital conversion processing; then the digital signal is transmitted to an MCU microcontroller module, calculation and separation are carried out through a built-in data analysis processing sub-module, and values of a resistive component and a capacitive component of the zero-sequence current are obtained; and judging whether the line has an insulation hidden danger or capacitive capacitance interference based on the two component values. Zero-sequence electric signals can be collected at high precision, distributed capacitance interference is weakened, and accurate detection and early warning of early-stage potential insulation hidden dangers in a low-voltage power grid are achieved.

This utility model discloses a molded case circuit breaker, including a housing and a control handle disposed on the housing panel. The housing houses a main control module, a local program upgrade module, and a remote program upgrade module. The local program upgrade module includes a Type-C interface, a voltage regulator circuit, and a first isolation circuit. The Type-C interface is located on the housing panel. The power supply terminal of the Type-C interface is connected to the power supply terminal of the main control module through the voltage regulator circuit, and the data terminal of the Type-C interface is connected to the communication terminal of the main control module through the first isolation circuit. This utility model achieves plug-and-play local offline program upgrades through the Type-C interface. Combined with the remote program upgrade module, the circuit breaker can achieve more convenient and diverse program upgrades, and the program upgrade structure has stronger anti-interference capabilities, with stable and efficient data transmission.

The application relates to a data collection method and device, computer equipment and a computer readable storage medium. The method comprises the following steps: in response to a timer interrupt instruction, entering a timer interrupt program, starting a clock counter and recording an initial count value; in the timer interrupt program, starting an electrocardiogram measurement module, a heart sound measurement module and a blood pressure measurement module according to a preset order according to preset assembly instructions, and measuring state data corresponding to a user; when the current count value of the clock counter reaches a threshold value, closing the electrocardiogram measurement module, the heart sound measurement module and the blood pressure measurement module according to the preset order based on the corresponding assembly instructions to obtain a target data set; based on the initial count value and the current count value, a data collection duration is obtained, and based on the target data set and the data collection duration, target state data is obtained. The method can realize high-precision synchronous collection of electrocardiogram data, heart sound data and brachial artery pressure data.