69results about How to "Not susceptible to external interference" patented technology

The invention discloses a device and method for detecting a detergent existence state in a washing machine. The device is characterized in that two electric-conducting metal probes are arranged a detergent container capable of being automatically placed with detergent and are connected with a controller, and the detergent existence state of the detergent container can be judged by detecting electric conductivity between the two electric-conducting metal probes inside the detergent container. The detergent existence state is detected in each starting process of the washing machine, when the detergent exists beyond a controllable range, a user is prompted in an acoustooptic manner to supplement the detergent in time, and when the user does not supplement the detergent, the washing machine stops work so as to avoid waste; detection can also be carried out after clothes are washed, and the prompt is performed in the acoustooptic manner as well when no detergent is detected. The device and the method disclosed by the invention have the advantages of low cost and high accuracy and are insusceptible to outside interferences.

The invention relates to a method for evaluating the construction quality of a tunnel, and discloses a method for evaluating the construction quality of tunnel drilling and blasting based on three-dimensional laser scanning. The method comprises the following steps of: acquiring data by adopting a tunnel data acquisition module at first, and then processing the acquired data by adopting a tunnel data pre-processing module, building a tunnel three-dimensional model building module according to the processed result, performing post-processing by adopting a tunnel three-dimensional model post-processing module, and finally, evaluating the result by adopting a tunnel drilling and blasting quality evaluation module. The method discloses by the invention has the advantages of being wide in measurement range, strong in applicability, high in automation degree, and good in reliability.

The invention relates to a frame-type circuit breaker fault diagnosis and degree evaluation method based on operating accessory current. The method includes the steps of firstly determining the working stages, including an energy storage stage, a closing stage and an opening stage, of the circuit breaker to be diagnosed and evaluated, then using the current of an energy storage motor to diagnose fault during the energy storage stage, and using the current of a closing coil to diagnose fault during the closing stage, using the current of the opening coil to diagnose fault and assess degree during the opening stage, respectively detecting the current signals of the energy storage motor during the energy storage stage, the current signals of the closing coil to diagnose fault during the closing stage and the current signals of the opening coil during the opening stage, conducting fault diagnosis with a multi-core support vector machine, and accurately determining the fault degree through a fault degree characteristic curve when the degree of the fault diagnosed has to evaluated.

The invention discloses an apparatus for metering microbes in water, and a method for metering microbes in water. The apparatus comprises a power supply port, an operating panel, a groove, a loading position, a microbe metering container, a lower container part, an upper container part, a film, a measured solution, a stirrer, a measuring electrode, a negative electrode, a positive electrode, a microbe collection terminal, a sampling rod, an anti-interference cap, super absorbent resin, magnets, a rotor and a motor, one end of the power supply port is connected with the negative electrode and the positive electrode, and when the other end of the power supply port is connected with the power supply, the microbes in the measured solution are negatively polarized on the negative electrode and are positively polarized on the positive electrode, and adjustment of the microbe collecting voltage and adjustment of the microbe metering voltage are alternately carried out through the operating panel; and the microbe metering apparatus applies an external voltage to make the microbes be polarized in order to make the microbes go through the zigzag electrodes, fall to the microbe collecting terminal and be metered, and the quantity of the microbes is directly displayed through a digital display panel. The apparatus and the method have the advantages of simplicity in operation, difficult interference of external factors to the measurement result, and high accuracy.