73results about How to "Realize remote online monitoring" patented technology

The invention discloses a remote monitoring system and method for opposed bridge deflection, comprising a liquid storage tank, a communication tube, a double-base point calibration module, a deflection measuring submodule, a data bus, a data synchronization collector, an industrial control computer, and a remote communication module. The liquid storage tank and the double-base point calibration module are mounted on a vertical section of the communication tube, and a horizontal section of the communication tube is communicated with each deflection measuring submodule. The deflection measuringsubmodule comprises a stop valve, a first liquid storage tube, a second liquid storage tube, a first pressure sensor, and a second pressure sensor. The first liquid storage tube and the second liquidstorage tube are respectively mounted at two ends of the stop valve, and are arranged horizontally and symmetrically. The second liquid storage tube is connected to the horizontal section of the communication tube through an interface of the communication tube. The first pressure sensor and the second pressure sensor are respectively arranged at outer ends of the first liquid storage tube and thesecond liquid storage tube. According to the remote monitoring system and method for opposed bridge deflection, the influence of liquid vibration in the communication tube on the measurement data is avoided by measuring the pressure value of the pressure sensor corresponding to the two opposed liquid storage tubes, and accurate measurements of dynamic deflection are achieved.

The invention discloses a 3G-based remote power quality monitoring method, which is realized through a 3G-based multi-nuclear power testing system. The 3G-based multi-nuclear power testing system comprises a digital signal processor, a digital-analog converter, a logic controller, a 3G communication module, an input / output module and a program memory. In the method, the digital-analog converter is controlled by a main program pre-stored in the digital signal processor to collect grid voltage and current signals and store the signals in a cache; the collected data are processed by the digital signal processor to obtain the amplitude, frequency, phase, three-phase unbalance and voltage transient parameters of fundamental waves and harmonic waves; and 3G communication is completed in a multi-thread manner after the program in the program memory receives remote commands or keyboard commands. The wireless, remote and online monitoring of the amplitude, frequency, phase, three-phase unbalance and voltage transient parameters of the fundamental waves and the harmonic waves for power quality can be realized via signal processing with double processors and 3G network transmission, the coverage area is large, the networking is easy, and the monitoring speed is high.

The invention discloses a composite probe for on-line monitoring of downhole pipe string corrosion, comprising: a probe body set in a cylindrical casing; a resistance probe, which includes a sealed reference element and a sensing element, connected in series with each other and connected to the downhole pipe string The material is the same; and the AC impedance probe, which includes a reference electrode, a working electrode and an auxiliary electrode, and forms an electrochemical three-electrode system; by collecting the terminal voltage of the reference element and the sensing element of the resistance probe, the downhole pipe string is calculated. Corrosion allowance: By loading sine wave signals of different frequency points on the working electrode, and synchronously collecting the polarization current of the auxiliary electrode and the polarization potential of the reference electrode, the polarization resistance of the working electrode can be obtained, and then the corrosion rate can be measured . The invention also discloses a monitoring device and a monitoring method provided with the probe. The invention can realize rapid on-line monitoring of the corrosion rate of downhole oil and gas casing or pipe column, and is suitable for the environment of any mixed medium of oil, water and gas in the downhole high temperature and high pressure environment.