176 results about "Water detector" patented technology

An intelligent water flow control system is coupled with a main water flow source and controls the water flow by controlling an electrical valve in line with the water source and making a determination by receiving information from one or more water flow detectors. The system controller executes that software which issues information from the one or more flow detectors and output signals for controlling the open or closed state of the various valves. The software makes determinations on whether a leakage condition is present and issues the valve control signals to shut off the necessary valves and to report to a user, the occurrence of a leakage condition.

A device or system for controlling fluid flow in a well includes a flow control element and a water detector. The water detector may actuate the flow control element in response to a measurement of a property of the flowing fluid. The water detector may be a capacitive proximity sensor. The measured property may be a dielectric constant. The flow control element may permit a predetermined amount of fluid flow after being actuated to a closed position. Also, the water detector may measure a property of the fluid flowing after the flow control element is in the closed position. A method for controlling a flow of fluid into a wellbore tubular may include positioning a flow control element along the wellbore tubular; measuring a property of a flowing fluid using a water detector; and actuating the flow control element in response to the measurement.

The invention relates to a frequency chosen of singular-spectrum analysis-based magnetic resonance sounding signal extraction method. According to the method, a nuclear magnetic resonance sounding water detector is used to collect MRS signals of a Larmor frequency-known region; a broadband band-pass filter is adopted to suppress partial noises, and thereafter, the position of MRS signals corresponding to the Larmor frequency are found on a power spectrum based on power spectrum analysis; and frequency chosen of singular-spectrum analysis is performed, so that the MRS signals are extracted. Thefrequency chosen of singular-spectrum analysis includes the following four steps that: embedding is performed; RSVD (Regularized Singular Value Decomposition) is performed; and corresponding singularvalues are selected according to the amplitudes of the MRS signals so as to perform matrix reconstruction; and diagonal averaging is performed. With the method of the invention adopted, random noises, spike noises and power frequency harmonic interference can be effectively filtered from noise-containing MRS signals; and the effective extraction of the MRS signals under a complex strong noise interference condition can be realized. Compared with a traditional MRS signal de-noising method, the method has the advantages of high operation speed, high signal-to-noise ratio, high practicality andthe like.

The invention relates to a magnetic resonance sounding (MRS) signal noise filtering field, in particular to a magnetic resonance sounding signal noise filtering method based on variational mode decomposition, which is mainly used for processing power frequency resonance noise and random white noise in the magnetic resonance sounding signals. A 'three-VMD' decomposition approach is provided to better achieve the efficient removal of noise in the noisy MRS signals. MRS signals collected by a magnetic resonance sounding water detector are subjected to band-pass filtering and Fourier transform todetermine the frequencies and the number of the power frequency resonance interference and the single frequency interference included in the MRS signals, the first, second and third VMD decompositionare employed to respectively remove the Gaussian white noise, most of the power frequency and the power frequency being the closest to the signals in the noisy MRS signals, and finally, target MRS signals are extracted and obtained. The magnetic resonance sounding signal noise filtering method can solve the customary modal aliasing problem after a traditional modal decomposition method is employed, and is high in signal-to-noise ratio and high in adaptability compared with the traditional MRS signal denoising method.

The invention relates to a system detection, calibration device and detection method of a ground nuclear magnetic resonance water detector. A host computer is connected with a nuclear magnetic resonance analog signal generator, a system self detecting element and a nuclear magnetic resonance ground water detector via a communication bus respectively. The system detection and calibration method of the ground nuclear magnetic resonance water detector comprise system detection by the ground nuclear magnetic resonance water detector, self detection of the calibration device, key parameter calibration for the ground nuclear magnetic resonance water detector, noise suppression detection and calibration for the ground nuclear magnetic resonance water detector and scanning process detection by the ground nuclear magnetic resonance water detector exciting pulse torque, which realize the performance indication test in the lab by simulating the field condition and realize the system calibration for the nuclear magnetic resonance ground water detector, enable each nuclear magnetic resonance water detector to be tested sufficiently before being used in field work so as to ensure the stability and reliability of the instrument in fieldwork, improve the efficiency of fieldwork and reduce the cost for fieldwork.

The invention provides an amphibious detector seismic data scaling factor retrieval method which includes: collecting and preprocessing water detector seismic data and land detector seismic data; calculating the weighted sum of root mean square amplitudes, self-correlation functions and cross-correlation functions of water detector seismic data and land detector seismic data; calculating the product of correlation functions and the product of the product of correlation functions according to the weighted sum; calculating the maximum variance modular equation coefficient according to the product of correlation functions and the product of the product of correlation functions; calculating the maximum variance module according to the maximum variance modular equation coefficient and scaling factors; determining the optimum scaling factor according to the maximum variance module; calculating the reflection coefficient according to the optimum scaling factor; drawing the optimum scaling factor and the profile of sub-bottom reflection coefficients and storing the optimum scaling factor and the sub-bottom reflection coefficients in a seismic data trace header.

The invention discloses an online SF6 gas micro-water monitoring device, method and system of high-voltage electrical equipment. The device comprises a computer data processing system, a gas circulation mechanism and a micro-water detector which is used for detecting gas in the gas circulation mechanism, wherein the gas circulation mechanism comprises a gas cylinder, a piston and a driving device which can drive the piston to move back and forth in the gas cylinder; a circulation ventilating opening communicated with an SF6 gas storage chamber in the high-voltage electrical equipment in a sealing manner is arranged on the gas cylinder; and the gas circulation mechanism is arranged in a sealed cavity. According to the SF6 gas monitoring device, method and system, gas in the SF6 gas storage chamber in the high-voltage electrical equipment is circulated into the gas cylinder outside the high-voltage electrical equipment by virtue of the sealed gas circulation mechanism, so that the humidity at sampling points inside and outside the SF6 gas storage chamber can be rapidly balanced; and then the accurate measurement is carried out by the micro-water detector, so that a large amount of SF6 gas does not need to be discharged, the detection result is accurate and the performance safety of the device and the system are ensured.

A detector system is provided suited for detection of environmental effects. The sensing element is constructed in the form of a grid and is designed in particular for the detection of moisture. Said structure is suited for simple deployment, optionally embedding into concrete, and detection of environmental effects on a large scale such as tunnels, bridges, dams and quays.

An acoustic wave sensor utilizes one or more acoustic waves trapped in an acoustic wave cavity to detect the presence of one or more substances on a surface of the acoustic wave cavity. To detect the presence of ice, a trapped torsional acoustic wave is used. To detect water, an acoustic wave with flexural or compressional components is used. The sensor includes a number of transducers adjacent the acoustic wave cavity where a controller drives different sets of the transducers to generate different acoustic waves.

The electronic apparatus includes a submergence detector for detecting submergence of the electronic apparatus in the water and retrieval thereof, a light-emitting device provided within an enclosure of the electronic apparatus, an illumination circuit for lighting the light-emitting device when an illumination signal is input, a controller for causing the light-emitting device to blink by generating the illumination signal at prescribed blinking intervals at least during a period from a point of submergence to a point of retrieval of the electronic apparatus and inputting the illumination signal to the illumination circuit, and a power control circuit for activating the controller by supplying electric power thereto if the electric power is not supplied to the controller when the submergence detector detects submergence.

A battery unit is provided which includes a control board, a storage case, a water detector, and an electrical conductor. The storage case is made of an assembly of a first and a second casing member. The first casing member has an upright wall which extends from the bottom thereof and surrounds the battery. The second casing member also has an extension which extends toward the bottom of the first casing member. The water detector is located close to the lower end of the extension of the second casing member. The electric conductor extends upward from the upper end of the extension and are electrically joined to the water detector. The electric conductor is also mechanically and electrically joined to the control board. This structure facilitates the ease with which the water detector is installed electrically and mechanically in the battery unit.

The invention relates to a ground nuclear magnetic resonance signal noise filtering method based on a model, which is mainly used for filtering the peak noise in a nuclear magnetic resonance signal. The method comprises the steps of firstly, collecting an MRS signal by using a nuclear magnetic resonance water detector, and removing the power frequency harmonics by using a harmonic modeling method;secondly, establishing a peak noise model through two second-order cascade band-pass filters, and meanwhile, positioning the position of the peak noise by adopting an NEO algorithm and intercepting corresponding data segments; and then, performing parameter extraction based on a least square method to obtain peak noise, aand finally, subtracting the MRS data from which the power frequency harmonic waves are removed from the peak noise obtained by modeling to obtain an MRS signal from which the peak noise is removed. According to the method, the problem of removing the peak noise in the MRS signal is solved, and compared with a traditional MRS peak signal denoising method, the method has the advantages of being high in practicability, obviously improving the working efficiency, improving the signal-to-noise ratio and the like.

A thermoelectric insulating medium fault simulation device comprises a sealed container, a self-heating electrode module, a high-voltage electrode, a high-voltage wall bushing, a low-voltage wall bushing, a sample inlet, a sampling port, a discharge detection device, a temperature controller, a heating power source, a plate penetrating flange, an electric heating rod, a pressure detector, a microwater detector, a discharge signal sensor, a first temperature sensor and a second temperature sensor. In operation, simulation of three types of thermoelectric complex faults can be realized throughthe temperature controller and includes simulation of thermoelectric complex faults with different thermoelectric positions, simulation of thermoelectric complex faults with same thermoelectric positions and simulation of thermoelectric complex faults under high-temperature and discharge complex action.

The invention provides a method and device for online micro water treatment of SF6 electrical equipment. According to the method, by conducting circulating drying and decomposer filtration on air in an air chamber of the SF6 electrical equipment, shut down maintenance of the SF6 electrical equipment can be avoided. The device comprises a machine body, wherein a ventilation connector (1), a first electromagnetic valve (3) and a second electromagnetic valve (4) are arranged in the machine body, one end of the ventilation connector (1) is connected with the first electromagnetic valve (3) and the second electromagnetic valve (4) through air inlet and outlet tube sets respectively, and the other end of the ventilation connector (1) is connected with an external air chamber; a micro water detector (2) is connected to the air outlet tube set, and an air circulating drying unit is further arranged in the machine body and connected between the air outlet end of the first electromagnetic valve (3) and the air inlet end of the second electromagnetic valve (4) through an air pipe. The method and device are suitable for the field of micro water drying of the SF6 electrical equipment.

Disclosed is an inversion method of a waterland detector data seabed reflection coefficient. The method is characterized by comprising the following steps: exciting and acquiring water detector and land detector seismic data by use of a seismic artificial epicenter, and performing preprocessing; calculating Fourier transformation of water detector data and land detector data; calculating an upgoing wave field and upgoing wave field first-order and second-order delay data; calculating the upgoing wave field and upgoing wave field first-order and second-order delay time sequence data; calculating a seabed reflection coefficient characteristic equation coefficient; constructing and solving a seabed reflection coefficient characteristic equation; calculating upgoing wave data energy; determining an optimum seabed reflection coefficient; and drawing a seabed reflection coefficient profile and storing a seabed reflection coefficient in a seismic data channel head. According to the invention, merging processing on the water detector data and the land detector data is realized, seawater ringing multitime wave interference influences in seismic data are eliminated, the signal-to-noise ratio and the resolution of the seismic data are effectively improved, and a certain anti-noise capability is exhibited.

The invention relates to a sewage detector which is convenient to clean and has a good collection effect, comprising a water sample detector, the inner chamber of the water sample detector is fixedly connected with one end of a water inlet pipe, and one end of the water inlet pipe is threadedly connected with a water pump, and the inside of the water pipe is A push-pull rod is plugged in, the top of the push-pull rod is fixedly connected with a handle, and the bottom end of the push-pull rod is fixedly connected with a piston. The piston is located inside the pumping cylinder, and the surface of the piston overlaps the inner wall of the pumping cylinder. A threaded pipe is connected, the bottom end of the threaded pipe is threadedly connected with a threaded sleeve, the bottom end of the threaded sleeve is fixedly connected with a water inlet, the surface of the water inlet head is provided with a water inlet, and the inner cavity of the water inlet head is fixedly connected with a first unit A directional valve, a second one-way valve is provided at the joint between the surface of the water pumping tube and the water inlet pipe, a fixed ring is sleeved on the surface of the water pumping tube, and an extension rod is fixedly connected to the surface of the fixed ring. The invention has the advantages of easy cleaning and good collection effect.

The embodiment of the invention provides a fall-into-water protection device, electronic equipment and a fall-into-water protection method, and relates to the field of electronic equipment, so as to solve a problem that the electronic equipment is difficult to salvage after the electronic equipment falls into water. The device comprises a signal processing unit, a water level detector, a power failure protector and an inflation assembly, wherein the water level detector, the power failure protector and the inflation assembly are respectively connected with the signal processing unit. The power failure protector is connected with a mainboard of the electronic equipment. The inflation assembly comprises a waterproof air bag. The water level detector is used for detecting the parameter information of the water level where the electronic equipment is located, and transmitting the parameter information to the signal processing unit. The signal processing unit is used for receiving the parameter information transmitted by the water level detector, obtaining the current water level of the electronic equipment according to the parameter information, controlling the power failure protector to be cut off after the current water level of the electronic equipment is greater than a first preset threshold value, and controlling the inflation assembly to inflate the waterproof air bag.

A modular water leakage detector includes a housing which carries a plurality of water leakage sensors, an electrical water shutoff valve and circuitry coupled thereto. In response to sensing water leakage, the circuitry actuates the valve to shut off the water supply. Detectors can communicate alarm indicating signals directly with one another. The detectors can include a wireless transmitter and communicate with a displaced alarm monitoring system.