30results about "Lubrication indication devices" patented technology

A volume or fluid level sensing system as taught by the present invention comprises a flexible bladder, a solenoidal coil, a means for volume or fluid level measurement, and a user interface. Means for volume or fluid level measurement are preferentially means for inductance measurement which may be selected from the set including timing inductive measurement means, AC voltage divider inductive measurement means, resonance inductive measurement means. A user interface may be selected from the set including a digital display, a data interface, a voltage level display device, or a current level display device. The solenoidal coil may be embedded in the flexible bladder or in a flexible sock encompassing the flexible bladder. In addition, a bladder volume or fluid level indicating method as taught by the present invention comprises the steps of inductance measurement, volume or fluid level inference, and volume or fluid level reporting.

A capacitive liquid level detector for detecting a liquid level of a liquid in a receptacle, the liquid being conductive, the detector comprising: a capacitor with a first plate having a fixed size and being insulated from the liquid, and a second plate being formed by the liquid itself, its size being variable depending on the liquid level inside said receptacle, wherein a thin film dielectric layer is formed on the surface of the first plate and located between the first plate and the second plate, the first plate with the thin film dielectric layer formed on its surface is arranged such that it covers an open part of the outer wall of the receptacle, the first plate with the thin film dielectric layer formed on its surface is attached to the receptacle by sealing means in order to seal the receptacle against liquid leakage.

A detecting device for a fuel injector includes a sensor unit and an ECU. The sensor unit is provided with a fuel pressure detection circuit which outputs a pressure detection signal in response to a fuel pressure. The ECU computes the fuel pressure based on a voltage value of the pressure detection signal relative to a reference voltage. The ECU obtains a comparative voltage according to an applied-voltage to the fuel pressure detection circuit and computes a deviation between the comparative voltage and the reference voltage. The sensor unit adjusts the applied-voltage in such a manner as to decrease the deviation. Thus, the computation accuracy of the fuel pressure is improved.

A method of and device for detecting a leak in reciprocating machinery, comprising at least two pistons, by the volume flow at least out of the reciprocating machinery being monitored and analysed, e.g. by means of Fourier analysis, in order to make it possible to detect a flow component, where the flow component has a frequency that differs from the fundamental frequency of the reciprocating machinery, the fundamental frequency of the reciprocating machinery being constituted by the rotational frequency of the reciprocating machinery multiplied by the number of pistons in the reciprocating machinery.

The invention discloses an aero-engine high-pressure fuel and grease heat radiator. The heat radiator comprises a double-core-body fuel and grease heat radiator assembly (1), a fuel safety bypass valve (2) and an oil safety bypass valve (3). The high-temperature low-pressure oil flows along a shell pass of the double-core-body fuel and grease heat radiator assembly (1), and a low-temperature high-pressure fuel flows along a tube pass of the double-core-body fuel and grease heat radiator assembly (1). Heat of the oil is taken away by the fuel through heat exchange, so that the high-temperatureoil is cooled. The fuel safety bypass valve (2) and the oil safety bypass valve (3) are only started in the case that an engine fuel system becomes abnormal or an engine oil system becomes abnormal orflowing resistance of the fuel or flowing resistance of the oil of a heat radiator core body is increased during working in alpine region, the fluid does not flow through the heat radiator core body,so that the use safety of an engine is ensured. According to the heat radiator, the structure of the double-core-body fuel and grease heat radiator assembly is mainly designed, so that the effects that the heat exchange efficiency is highest, the structure is the most compact, and the weight is lightest within a certain space and certain size range are achieved, and the use requirements of a newly-developed-model engine can be met.

A filter element sensor module having a housing, a sidewall of the housing including a recessed portion. The sensor module including a sensor assembly being provided within the housing about a sensor port interface being provided at one end of the housing. The sensor module also including processing circuitry being configured to receive signals from the sensor assembly and communication module, the communication module being configured to transmit one or more sensed parameters from the sensor assembly.

A method for measuring and displaying a factor includes: sensing a factor by using a sensing unit, which is movable in a plane, a curved surface, or a space where the factor for sensing is generated or contained and senses the factor; photographing the plane, the curved surface, or the space; simultaneously recognizing a position of the sensing unit by targeting the sound sensing unit when sensing the factor in the step of sensing; generating a factor map data by mapping the factor sensed in the step of sensing onto the position sensed in the step of recognizing; overlaying the factor map data with the picture data; and displaying the factor map data overlaid with the picture data.

The invention relates to a photoelectric liquid level sensor, which comprises a shell, a photoelectric receiver, a control circuit and at least one group of light guide components, and is characterized in that each light guide component comprises a photoelectric emitter, a first light guide column, a second light guide column and a first reflecting surface; the control circuit is used for controlling the photoelectric emitter to emit signal light and detecting whether the photoelectric receiver receives the signal light or not; the first light guide column guides the signal emitted by the photoelectric emitter to the first reflecting surface; and the first reflecting surface reflects the light guided out by the first light guide column to the second light guide column. And the second lightguide column is made of a transparent light guide material and guides the signal reflected by the first reflecting surface to the position of the photoelectric receiver. According to the invention, as the signal light is transmitted in the light guide column, the loss of the signal light in long-distance transmission can be greatly reduced, the testing distance is greatly increased, and the sensor can be mounted at the top of the liquid container. In addition, stray light interference received by the photoelectric receiver is little, and the detection result is accurate and stable.

The invention discloses an optical fiber laying and imaging device and method for sensing a phreatic surface of a dam. The device comprises at least five layers of optical fibers laid layer by layer along the height direction of the dam, the optical fibers laid layer by layer along the height direction of the dam are alternately laid according to the shape as shown in the description, one ends ofthe optical fibers are connected with a pulse transmitting device, and the other ends of the optical fibers are connected to a computer through an optical fiber connector. The device obtains points ona phreatic line of different sections by means of layered laying of the distributed optical fibers, interpolating point distribution is conducted on center of gravity in the area, iterative computation is conducted to form the phreatic line, the points on the different sections are connected to generate the complete phreatic surface, and the device has a great significance in achieving the wholeregion real-time monitoring of seepage behavior of the dam.

In a liquid surface detecting device including a movable unit having an arm and a float, for detecting a liquid surface in response to a positional variation of the float, a liquid-repellent coating is formed on the surface of at least one of the arm and the float. Accordingly, it is possible to improve degree of precision of detecting the liquid surface since the movable unit such as the float is restrained from being displaced in response to a temporary displacement of the liquid surface in a fuel tank which is caused when a vehicle oscillates.

The invention provides a laboratory acquisition method and device for water level change of two sides of a V-shaped river course. The invention provides an image processing-based non-immersive measurement method by combining dam break water flow tests in a V-shaped sink model and an image binarizaiton processing method. The method can detect water level change along both sides, thereby helping further understand motion characteristics and laws of water flow, solving a problem that a traditional manner measures only at one point, lowering cost, consuming less time, and being convenient to conduct.

A fuel level indicator for riding lawn equipment with a fuel tank pivotably mounted under the operator seat. A fuel level indicator arm is pivotably mounted under the fuel tank and has a first end contacting the fuel tank and a second end extending through an opening in front of the operator seat. A scale on the opening indicates the fuel level corresponding to the location of the second end of the fuel level indicator arm. A pair of tension springs are attached to the fuel tank and partially support the fuel tank.

There is provided a water level sensing apparatus including: a body disposed to be exposed within a liquid tank and having an accommodating space therein; and a capacitance detecting unit accommodated in the accommodating space of the body, wherein the capacitance detecting unit compares an upper side capacitance value and a lower side capacitance value and turns on or off an output signal. Because a changeable reference that the capacitance values of a reference surface and a detected surface of the body are simultaneously changed is used, even if the body comes in contact with moisture or debris, the reference surface and the detected surface are equally affected by the moisture or debris, thus reducing the occurrence of malfunction.

The invention discloses a remote positioning LNG liquidometer which comprises a liquid level display, a liquid level transmitter, a liquid level sensor, a pressure sensor, a temperature sensor, a CPU processor and a GPS module, wherein the CPU processor is installed on a circuit board in the liquid level transmitter, the circuit board is also provided with a pressure sensor interface, a temperature sensor interface, an analog signal output interface, a CAN communication interface and a GPS module output interface, which are connected with the CPU processor, and the liquid level transmitter comprises a first transmitter and a second transmitter, and which are respectively connected with the pressure sensor and a capacitance sensor. The structure design is simple, and the remote positioning LNG liquidometer can directly simulate voltage output to directly connect with an oil meter dial of an automobile. Visual display is facilitated, and low temperature display is realized. The remote positioning LNG liquidometer is more convenient to user, and higher in metering precision. Measuring values of LNG and geographic coordinate values are sent to an Internet of things platform through a GPS module and the Internet of things platform to realize smart Internet of things effect.

The invention discloses a rotary support structure for sensors. The rotary support structure is installed on a rotary shaft of a Hall sensor. The rotary support structure is characterized by comprising a floating bar connector connected with a floating bar, a rotary shaft connector, and a fixing sleeve, wherein the rotary shaft connector connected with the rotary shaft is used for positioning and the fixing sleeve assists the rotary shaft connector in positioning. The floating bar connector is connected with the rotary shaft connector and is L shaped. The top and outside of the floating bar connector are provided with floating bar connecting channels. The rotary shaft connector is disposed on the inside of the floating bar connector and comprises positioning jaws which are mounted on two sides of the rotary shaft and which extend axially along the rotary shaft. Each positioning jaw is provided with an inner arc notch fitting the rotary shaft. The rotary shaft connector is sleeved with the fixing sleeve. The rotary support structure has the advantages that two-point positioning between the structure and the rotary shaft is changed into double-chamber fixation, the structure is more stable, and the service life of the structure is prolonged.

The invention relates to the technical field of water tanks, in particular to a buried anti-floating water tank with a bottom plate. The buried anti-floating water tank comprises a water tank, a pump room and a drainage bin, the water tank comprises a tank body and the bottom plate, an in-tank liquid level monitor and an out-tank liquid level monitor are correspondingly mounted inside and outside the water tank, and a water tank inner pump for pumping water stored in the water tank is arranged in the pump room; an out-tank communicating water collecting pit communicating with the drainage bin is arranged below the drainage bin, and an out-tank submersible sewage pump is mounted in the out-tank communicating water collecting pit; and the in-tank liquid level monitor and the out-tank liquid level monitor correspondingly monitor the liquid levels inside and outside the water tank in real time and transmit liquid level data to a background control system in time, the background control system controls the working states of the water tank inner pump and the out-tank submersible sewage pump, so that the water level outside the water tank is not higher than the water level inside the water tank all the time, and therefore, a good anti-floating effect is achieved. The technical problems that a conventional buried water tank is long in construction period, high in manufacturing cost, poor in anti-floating effect, prone to causing water pollution and the like can be solved.

The invention discloses a water level real-time monitoring device for intelligent construction and a use method thereof, and belongs to the technical field of intelligent construction. In order to solve the problems that the position of a monitoring device cannot be rapidly adjusted according to the actual water area condition, the collection effect is general and the functionality is poor, a second electric cylinder stretches out and draws back to drive a monitoring device body and a movable plate to move, the length of a first electric cylinder is adjusted, and the angle position of an adjustable plate in the monitoring device body is changed; the electric lead screw is opened to adjust the positions of the telescopic rod and the vertical positioning head, the positions of the monitoring device main body and the adjustable plate can be adjusted, and the positions of the floating ball liquid level sensor and the vertical positioning head can be adjusted, so that the device can adapt to water areas of different areas, can be adjusted at any time, facilitates different types of work, is simple to operate, and can improve the monitoring effect. According to different environment conditions and water quality conditions, judgment is performed through the processor module, so that the accuracy of water level detection is improved.

The invention provides an oil tank liquid level ultrasonic measurement method and system based on LSTM, a terminal and a storage medium, and the method comprises the steps: employing an ultrasonic device to regularly collect the height of the oil tank liquid level, and generating a liquid level time sequence; processing the liquid level time sequence by using a pre-trained long-short-term memory artificial neural network model to obtain a predicted liquid level height; generating a liquid level fluctuation curve graph by using the liquid level time sequence, and outputting and displaying the liquid level fluctuation curve graph and the predicted liquid level height. According to the method, the actually detected oil tank liquid level height is imported into the trained long-short-term memory artificial neural network model, so that the predicted liquid level height is obtained, the predicted liquid level height is a numerical value obtained by learning the long-short-term memory artificial neural network model based on an actual liquid level height trend, the influence of liquid level fluctuation is small, and the prediction accuracy is high. Therefore, compared with a traditional liquid level measuring method, the accuracy of a result obtained by the method is better.

The invention relates to continuous liquid level detection, in particular to a wide-range isotope liquid level detection synthesis circuit. The circuit comprises a photoelectric coupler U1 and a Schmidt inverter U2A, the input end of the photoelectric coupler U1 is connected with one end of a one-way guide signal diode through a current-limiting resistor R9, the other end of the one-way guide signal diode is grounded through a corresponding suspended protection resistor, a material level detector input signal is connected between the suspended protection resistor and the one-way guide signal diode, and the output end of the photoelectric coupler U1 is connected with the Schmidt inverter U2A; and the circuit in the technical scheme can effectively overcome the defect that a wide-range continuous liquid level cannot be detected in the prior art.

The invention discloses an electronic liquid-level sensor. The electronic liquid-level sensor comprises a battery, a first floater switch, a second floater switch, a first resistor, a second resistor,a third resistor, a light-emitting diode and silicon controlled rectifier, wherein when the water level exceeds the first floater switch, the first floater switch is connected with the second floaterswitch, the light-emitting diode is lightened, the silicon controlled rectifier is switched on, control signals are output by a first control signal output end and a second control signal output end,a relay switch is connected with a water pump circuit, and a water pump starts pumping water; and when the water level falls below the second floater switch, the silicon controlled rectifier is switched off, and the water pump stops pumping water. Compared with the prior art, the buoyance switch is taken as a sensor, and metal parts in the sensors are not in contact with liquid in order to prevent the sensor corrosion phenomenon. Moreover, the direct contact type has high accuracy, and only a small quantity of electronic elements are adopted in the whole circuit, so that the electronic liquid-level sensor has relatively low cost and wide application value compared with a high-accuracy precise instrument.

The invention discloses a corrosion-resisting sensor. The corrosion-resisting sensor comprises a measurement assembly with a shaft shoulder structure, a corrosion-resisting vibrator lower sleeve and a corrosion-resisting vibrator upper sleeve, wherein the corrosion-resisting vibrator lower sleeve is connected to the part below the shaft shoulder structure of the measurement assembly in a sleeved mode, the corrosion-resisting vibrator upper sleeve is connected to the part above the shaft shoulder structure of the measurement assembly in a sleeved mode, and the lower end face of the corrosion-resisting vibrator upper sleeve abuts against the upper end face of the corrosion-resisting vibrator lower sleeve. The corrosion-resisting sensor further comprises a lower connection sleeve and an upper connection sleeve, wherein the lower connection sleeve is connected to the corrosion-resisting vibrator upper sleeve and the corrosion-resisting vibrator lower sleeve in a sleeved mode, the head of the corrosion-resisting sensor is sleeved with the upper connection sleeve, a gap is arranged between the lower connection sleeve and the corrosion-resisting vibrator upper sleeve, and the upper connection sleeve can be embedded in the gap. Due to the arrangement, the corrosion-resisting sensor has a better sealing effect.

Periodically heating a soot containing engine lubricant to a temperature in the range of about 115° C. to about 150° C. is effective in controlling soot induced viscosity increase of the lubricant. The period at which heating is conducted may be a function of the number of hours the engine has been operated or it may be based on the oil condition.

The invention discloses a high-temperature-resistant high-pressure-resistant guide wave radar liquid-level meter in the technical field of guide wave radar liquid-level meters. The guide wave radar liquid-level meter comprises a protection box, the left end of the protection box is provided with a flange plate, a conducting rod is inserted to the left side of the flange plate, the right end of theconducting rod penetrates the flange plate and is inserted at the left end of the protection box, cooling fins are inserted at the right end of the protection box, and a meter shell body is arrangedat the right end of the cooling fins. By integration of a radar transmitter and a radar receiver in the protection box, the protection box is formed by a metal protection outer shell, a heat insulating layer and a metal protection inner shell, the radar transmitter and the radar receiver in the protection box are protected through the two metal shells, and effectiveness in resistance to external high pressure is achieved; by the heat insulating layer between the two metal shells, external high temperature is insulated, service lives of the radar transmitter and the radar receiver are effectively prolonged, and accordingly the service life of the guide wave radar liquid-level meter is prolonged.