31results about How to "Interference will not be affected" patented technology

The invention discloses a probe compound for identifying fluorine ions by combining spectral detection and bare eyes. The compound is a new compound formed by using excited state proton transfer compounds as a matrix and by silylation. The compound can be used for detecting fluorine ions, in particularly detecting fluorine ions in a water environment. Infiltrated test paper prepared by the compound is quick and convenient, the detection limit is low, and according to different excited wavelengths, two modes, namely an intensity identification mode and a chromaticity identification mode, can be selected respectively for better detection by an instrument and bare eyes.

The invention relates to a distribution transformer monitoring system, comprising an acousto-optic alarm, a monitoring sensor and a computer background management system. The acousto-optic alarm is fixed on a pole 3 meters away from the ground, and the monitoring sensor is pasted on the pole by means of magnet adsorption. On the casing of the distribution transformer, when the monitoring sensor is removed from the casing of the distribution transformer, the on-site sound and light alarm will be automatically activated and the alarm information will be sent to the mobile phone of the person in charge in the form of a short message, and the mobile phone of the person in charge will be dialed in turn to remind to check the short message. At the same time, the information is transmitted to the background for backup, and the background will remind the on-duty personnel with sound and screen flashing. The system has a variety of alarm methods, flexible selection, novel structure, safety and reliability, convenient networking, accurate alarm, and no missed or false alarms.

The invention discloses a signal relay method for smart home, which includes the following steps: S1. According to the sequence of the repeaters, sort all the terminals wirelessly communicated with the repeaters; S2, any group Between the corresponding terminal and the repeater, the terminal sends information to the repeater; S3, the information sent by any of the terminals is sorted among all the repeaters Forward one by one, and in any forwarding, the repeater strengthens the information; S4, the controller obtains the information sent by all the terminals from the repeater located at the last position in the sequence . The above-mentioned relay method can ensure the stable transmission of the signal of the smart home device.

The invention discloses a micro-fluidic chip flow velocity sensor based on micro-nano optical fibers. The micro-fluidic chip flow velocity sensor comprises a micro-fluidic chip, micro-nano optical fibers and a flexible thin film, the thickness of the flexible thin film is smaller than or equal to 100 microns, a refractive index of the flexible thin film is smaller than that of the micro-nano optical fiber, the flexible film coats a fluid channel of the micro-fluidic chip, the flexible film is provided with openings at an inlet and an outlet of the fluid channel respectively, a stretching partof the micro-nano optical fiber stretches across the fluid channel at the to-be-measured position of the fluid channel, and the stretching part of the micro-nano optical fiber, a tapering transition area and non-stretching parts at the two ends are partially embedded in the flexible film. When fluid in the fluid channel flows, the flexible film is bent outwards under pressure, and due to the increase of the bending loss of the micro-nano optical fiber, an output light intensity signal is reduced accordingly, so that flow velocity sensing is realized. According to the invention, multi-point flow velocity detection can be realized, flow velocity detection can be carried out on an existing micro-fluidic chip, and high-sensitivity flow velocity sensing is realized.

The invention relates to the technical field of ball valves, in particular to an integrated ball valve for remote monitoring and control of temperature, pressure and flow. The side wall is provided with a spring installation hole for connecting the other end of the spring, the side of the spring seat away from the spring is connected with a second sealing ring, and the upper end of the valve body is connected with a connecting bracket communicated with the valve body through a mounting flange. A temperature sensor and a flow sensor whose lower end extends into the valve body are installed in the connecting bracket, and a digital display screen that receives signals from the electric actuator, pressure sensor, temperature sensor and flow sensor is installed on the upper end of the connecting bracket. This ball valve is an integrated valve that combines the valve and a single-function detection valve into a whole, integrating remote switch, medium data monitoring, and data feedback, which is convenient to use and saves manufacturing costs.

The invention discloses a power division isolation filter circuit, which relates to the field of electronic technology and includes: an active crystal oscillator, a main port CR matching unit, a first CLC filter unit, a second CLC filter unit, a first CR matching unit and a second CR Matching unit; the active crystal oscillator is connected to the main port CR matching unit, the main port CR matching unit is connected to the input end of the first CLC filter unit and the input end of the second CLC filter unit, and the output end of the first CLC filter unit is connected to the first CR The input end of the matching unit is connected, the output end of the second CLC filter unit is connected with the input end of the second CR matching unit, the output end of the first CR matching unit is connected with the first output end of the circuit, and the output end of the second CR matching unit Connect with the second output terminal of the circuit. The invention has the advantages of realizing the isolation and filtering of the output branch signal of the active crystal oscillator, improving the anti-interference ability and improving the system noise.