4results about How to "Avoid Measuring Inaccuracies" patented technology

The utility model relates to the field of height measuring devices, in particular to a crimping terminal height measuring device. The utility model provides a crimp terminal height measuring device which can fix a crimp terminal in the process of measuring the height of the crimp terminal and avoid inaccurate measurement caused by displacement of the crimp terminal. A crimping terminal height measuring device comprises a bottom plate, a connecting column, a control piece and the like, the connecting column is connected to the upper side of the middle of the bottom plate, and the control piece is connected to the front side of the upper portion of the connecting column. According to the utility model, the telescopic end of the electric push rod shrinks to drive the limiting piece at the front part to move backwards, so that the swing rod rotates, the rotating piece is driven to rotate, the limiting pieces slide to be close to each other, and the crimping terminal is clamped and fixed, so that the crimping terminal can be fixed in the process of measuring the height of the crimping terminal; and inaccurate measurement caused by displacement of the crimping terminal is avoided.

The invention provides a determination method and determination equipment for the content of aluminum in an aluminum adjuvant, and the determination method comprises the following steps: heating and dissolving the aluminum adjuvant in an alkaline solution to form a primary mixed solution; adding an acid solution into the primarily mixed solution, and forming a first mixed solution after the primarily mixed solution reaches a target pH value; adding an ethylene diamine tetraacetic acid titrating solution and an acetate buffer solution into the first mixed solution, heating, taking out, and cooling to room temperature to form a first solution to be titrated; after indicating liquid is added into the first to-be-titrated solution, titration is conducted through a zinc titrating solution till the color is changed, the total aluminum content in the aluminum adjuvant is calculated according to the volume of consumed titrating solution, and the total aluminum content comprises the amorphous aluminum content and the crystalline aluminum content. The method for determining the aluminum content in the aluminum adjuvant is simple and convenient to operate and low in cost, the aluminum content in the aluminum adjuvant can be directly and rapidly detected without drying, and the accuracy and convenience of evaluation of key indexes of the aluminum adjuvant can be effectively improved.

The utility model discloses an anti-misoperation locking failure alarm device for high-voltage dual-power-supply switching, and mainly aims to solve the problems that when a high-voltage power supply is not correctly switched due to misoperation, a short-circuit accident is easily caused, and the personal safety of operators and a power grid are harmed. According to the technical scheme, a detection module for detecting load line information is electrically connected between a high-voltage dual-power-supply switching device and a load, the output end of the detection module is electrically connected with a control unit, and the output end of the control unit is electrically connected with an anti-misoperation locking device, so that accidents caused by misoperation can be avoided, meanwhile, short-circuit accidents are prevented, and the service life of the high-voltage dual-power-supply switching device is prolonged. The correctness of the metering device is ensured, the safety of a power grid and operators is ensured, and the safety, stability and reliability of high-voltage dual power supply switching are improved.

This utility model relates to an ultrasonic smart gas meter vibration detection circuit. Its features include a vibration detection circuit employing an electromagnetically inductive omnidirectional vibration sensor to convert vibration amplitude into an electrical signal; an operational amplifier processing circuit including a filter circuit, a decoupling circuit, and an operational amplifier to amplify and filter the weak signal output by the omnidirectional vibration sensor; an output signal control circuit that raises the bias voltage of the operational amplifier through a resistor voltage divider to ensure that the weak signal can activate the transistor in the output signal determination circuit; and an output signal determination circuit that converts the analog signal into a digital level signal using the switching characteristics of the transistor to determine whether vibration has occurred. This utility model, using an electromagnetically inductive vibration sensor and signal processing circuit, combined with filtering, decoupling, and operational amplifiers, can accurately capture weak vibration signals from the gas meter and its surrounding environment, ensuring the detection of minute vibration changes, exhibiting high sensitivity, and enabling timely response to vibration signals.