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 provides a signal detection device in an all-fibre disturbance sensing and positioning network system, relating to the fire sensing detection technical field, in particular to a weak signal detection device for safely monitoring perimeter security. The output terminal of the transmission module of the signal to be detected of the invention is connected with the input terminal of a photoelectric converter and transmits the optical signal to be detected to the photoelectric converter; the output terminal of the photoelectric converter is connected with the input terminal of a preamplifier and converts the optical signal to be detected into electric signal; the output terminal of the preamplifier is connected with the input terminal of a selection filter and amplifies the electric signal and filtrates partial noises; the output terminal of the selection filter is connected with the input terminal of a phase-locked amplifier; the output terminal of the phase-locked amplifieris connected with the input terminal of a computer characteristic analysis system; the electric signal is amplified with noises filtrated by the phase-locked amplifier and is then transmitted to the computer characteristic analysis system. The signal detection device in the full fibre disturbance sensing and positioning network system realizes the objects of high sensitiveness, simple structure, long monitoring distance and precise positioning.

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 relates to a hydraulic proportional valve block with a pressure compensation function. The hydraulic proportional valve block comprises a valve body (1), a pressure compensation valve (2), a flow control valve (3), a proportional pressure reduction valve (4) and a fixed value pressure reduction valve (5). Multiple installing slots are formed in the valve body (1). The pressure compensation valve (2), the flow control valve (3), the proportional pressure reduction valve (4) and the fixed value pressure reduction valve (5) are installed in the corresponding installing slots in the valve body (1). The valve body (1) is further provided with an oil inlet (6), an oil outlet (7) and a low-pressure oil return opening (8). The hydraulic proportional valve block has the advantages of being compact in structure, simple in processing technology, low in processing cost and the like.

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.

The invention discloses a typing detecting kit and method for detecting the digital PCR absolute quantification of HBV-B / C. The kit comprises a DNA extraction solution, a digital PCR reaction buffer solution A, a digital PCR reaction buffer solution B, an HBV-B virus gene positive quality control, an HBV-C virus gene positive quality control, a negative quality control and an internal standard solution. The method includes the following steps of firstly, processing a to-be-detected sample; secondly, processing a quality control product; thirdly, preparing a digital PCR reaction mixed solution; fourthly, generating a micro-reaction liquid drop, and conducting digital PCR reaction amplification; fifthly, reading a fluorescent signal, analyzing an HBV type and calculating the number of copying times. By means of the digital PCR technology and the dual-color florescent probe, two subtypes of HBV are detected at the same time; without depending on an external standard object or a standard curve, the kit and method are easy and convenient to operate and can directly detect the HBV precise absolute quantification.

The invention belongs to the technical field of chemical sensing, and particularly relates to a new fluorescence detection method of tetracycline based on a zirconium-based MOF(Metal-Organic framework). By using the zirconium-based metal-organic framework (Zr-MOF) with good water and heat stability and excellent luminescent performance as a detection platform, selective adsorption enrichment and fluorescent response of the Zr-MOF on the tetracycline in a water body are utilized, so that high-sensitivity and high-selectivity detection on the tetracycline can be realized. Meanwhile, the detection method has a low detection limit. Compared with other detection methods of the tetracycline, the detection method disclosed by the invention has the advantages of simple and quick operation, no need of expensive and complicated instruments and equipment, and the like; therefore, the practicability is high, and the application range is wide. The fluorescent response of the zirconium-based MOF on the tetracycline is based on electron transfer between the zirconium-based MOF and the tetracycline, and fluorescence quenching on the zirconium-based MOF is caused by photoinduced electron transfer between the zirconium-based MOF and the tetracycline.