507results about "Level indicators by dip members" patented technology

A chemical vessel used for holding a liquid chemical precursor is disclosed comprising a liquid level sensor tube. The liquid level sensor tube is configured to operate in an environment where the liquid chemical precursor is heated to a point of boiling or vaporization. The liquid level sensor tube comprises housing with a slot built in to prevent any false readings of sensors disposed within the liquid level sensor tube.

The invention relates to a method and a device capable of measuring water level and in-situ dissolved oxygen and collecting underground water at different depths. A dissolved oxygen meter probe is combined with a water collection pipe for performing in-situ observation on dissolved oxygen in underground water at different depths, and the content of dissolved oxygen in a water sample transferred from the water collection pipe into a sampling bottle is prevented from being changed. An opening/closing state of a water inlet cover of the water collection pipe is controlled according to the difference of rope descending speeds on parts of different diameters on a reel. A three-legged support is fixed on an observation well, a valve of a water outlet of the water collection pipe is closed, and the water inlet cover of the water collection pipe is covered. The reel is rotated, so that the water collection pipe descends, and when a pointer of a microammeter deflects, a catch bolt is screwed, and then the water level of underground water is obtained; a switch of a battery box is switched off, the catch bolt is loosened, the reel is continuously rotated until the water inlet of the water collection pipe reaches specified depth, the catch bolt is screwed, and the content of dissolved oxygen is recorded; the water inlet cover is opened through a pull rope, and the reel is rotated to take out the water collection pipe after the water collection pipe is full of water. The device has the characteristics of simple operation, high efficiency, energy conservation, high accuracy, low cost and the like. The voltage of a used battery and the range of the microammeter can be adjusted according to the contaminated situation of underground water.

A self-contained apparatus detects the absence of water in a cut plant container and signals an audible alert. The alert sounds periodically until an attendant refills the water. The apparatus is a slender rigid structure that can easily fit inside a narrow vase of cut flowers. The top portion that remains above the normal water level holds the battery and electronic circuitry. The bottom portion, which rests against the container bottom, holds the water sensor. Various means of electronically distinguishing water from air are disclosed: thermal, vibrations, viscosity, density, acoustic, electromagnetic (including capacitance, microwaves, optical and beta rays), electrical contact, electrochemical, floats and pressure. The sensor has cavities in its structure to protect the sensor from handling, water damage and contamination. Some cavities are flooded having an opening above and below the normal container water level; the water inside a flooded cavity matches the water level in the container. Other cavities are dry to protect sensors and circuitry from water damage. Circuitry to detect the absence of water includes bridge circuits for variable resistance and variable voltage sensors. In addition, both self-impedance and mutual impedance circuits are disclosed.

A fluid level measuring device, also referred to as a dipstick, for measuring the fluid level in a fluid reservoir or tank, such as an oil pan or transmission reservoir in an internal combustion engine. The fluid level measuring device includes a stationary tube assembly in which a dipstick assembly is disposed. The dipstick assembly includes a fluid level indicator measuring blade attached to an elongated shaft which is directly molded into a plastic handle assembly. The plastic handle assembly includes a bayonet type locking mechanism for locking the handle to the stationary tube assembly. A compressible seal forms a pressurized seal between the stationary tube assembly and the handle.

The invention discloses a real-time level monitoring method based on image processing; by combining the image processing technique in computer vision and the traditional method of measuring water depth by a marker post, the problems of the traditional methods, such as the need for manual checkout of graduation on the marker post, inconvenience of operation, great errors, and susceptibility of the marker post to abrasion. An acquired image is simplified into a mathematical model by means of object detection and line detection techniques in image processing, length ratio of segments in the model is calculated, a height of the marker post above the water surface is attained according to a reserved reference length of the marker post, and accordingly real-time water depth is acquired. The problems of the traditional schemes are solved, and the method has higher numerical robustness and real-time interactivity.

The invention discloses an apparatus and a method for detecting grouting fullness of a reinforcement semi-grouted sleeve by an endoscopic water injection method. The apparatus comprises a guiding frame, an industrial endoscope and an injection apparatus; the guiding frame comprises a guiding ruler, two side surfaces of the guide ruler are respectively provided with a plurality of guide rings, andone side surface of an entry end of the guide ruler is provided with a cornering auxiliary part; the injection apparatus consists of an injection hose and an injector which are connected, and the injection hose is arranged in the guide rings on one side; the industrial endoscope comprises a detector pipeline, two ends of the detector pipeline are respectively connected with an endoscope main machine and an endoscope detector, and the detector pipeline is arranged in the guide rings on the other side; and by virtue of the cooperation of the industrial endoscope, the guiding frame and the injection apparatus, the endoscopic water injection is performed for grouting defects inside the sleeve, so that the grouting fullness can be effectively and accurately detected. The grouting fullness detection apparatus and method provided by the invention have the advantages of reasonable structure, no need of embedding a sensor, reusability, convenience in operation and low comprehensive applicationcost.

The invention relates to a method and a system for prewarning drought and flood disasters of farmlands. The method comprises the following steps: arranging an electronic water gauge for measuring an underground water level and an electronic water gauge for measuring a ground water level; inputting measuring results into a collector; transmitting the measuring results to a remote prewarning system server by the collector and processing the measuring results in the remote prewarning system server; judging whether floods, floodwater and droughts are available or not according to the ground water level and the underground water level by using the prewarning system server; and prewarning possible drought and flood disasters in time so as to prepare for irrigation or drainage. According to the invention, through automatic monitoring of the electronic water gauges within 24 hours, the drought and flood disasters can be effectively and automatically monitored and controlled; and meanwhile, the technical scheme provided by the invention obtains good expansibility.

A flexible locking dipstick module useful with a motor vehicle transmission including a transmission case. A transmission dipstick is disposed within a housing which has one end thereof affixed to the transmission case and extends therefrom to a location within the engine compartment of a motor vehicle. Each end of the module includes a quick disconnect locking coupling providing for ready installation of the dipstick housing and its associated dipstick. Each coupling further provides protection against blow out of the dipstick in the event of inordinate build up of pressure within the transmission. Further, one portion of the outboard coupling may be employed as a liquid-tight closure for a dipstick entry opening in the transmission case during removal and/or storage of the transmission case.

The present disclosure relates to a detection system for detecting a liquid level in a rotating driveline component. The detection system may include a first sensor for detecting the liquid, a second sensor for detecting a rotational position of the driveline component, and a receiver for determining the liquid level based on the first and second sensors.

This invention relates to a sensor element in a fuel system, and in particular, to an electro-static potential differential level sensor element for measuring fuel levels and fuel type in a fuel system. A sensor element includes two electrode plates mounted on a dielectric material and secured to a shield plate. The sensor element is extruded to form a three dimensional sensor element, such as a spiral coil, that has an increased capacitance detection ability to measure fuel type and level.

A knit sleeve for an oil dip stick tube, combination thereof, method of construction thereof and method of dampening the vibration of an oil dip stick tube is provided. The knit sleeve includes a circumferentially continuous, closed knit tubular wall extending between opposite ends with a pair of end sections adjacent the opposite ends and a midsection extending between the end sections. The end sections include heat-shrinkable yarn to allow the end sections to be heat-shrunk into a fixed relation about the oil dip stick tube. The midsection includes generally rigid, circumferentially extending, non-heat-shrinkable yarn to maintain the midsection having a circular configuration about the oil dip stick tube with an annular gap extending between the oil dip stick tube and an inner surface of the midsection.

A device for measuring the depth of concrete comprising an elongated spine, a stepped blade attached at the distal end of the spine and having a plurality of bi-lateral steps having a predetermined width and height tapering toward the distal end of the spine, a depth probe slidably attached longitudinally along the spine and including an indicator; and a scale aligned with the indicator. The depth probe may have a pointed or beveled distal tip which is useful for penetrating concrete or other aggregate materials. The stepped blade is provided into concrete and comes in contact with the top of the rebar grid, with the steps measuring the depth of the concrete cover over the rebar. The depth probe is plunged into the concrete until the tip reaches the bottom. The scale measures the distance between a distal tip of the depth probe and the leading edge of the blade.

The invention relates to a method for detecting the dynamic stock level in a stock bin limit position in an image processing manner based on a digital camera and an auxiliary lighting device. By shooting images of a stock bin and processing the images in real time, the real time monitoring of the dynamic stock level is completed, and an ultralimit alarm for the stock level is realized. By analyzing the characteristics of the stock bin limit position images and adopting the characteristics of particular images extracted in the image processing manner as a basis, the dynamic stock level near the stock bin limit position corresponds to three working states including a detection state, a monitoring state and an alarm state, the ultralimit alarm for the stock level is realized, and the method has the characteristics of good real time performance and high reliability. The method is especially applicable to occasions having safety enforcement requirements for the stock level in the stock bin limit position, such as underground coal bins in coal mines.

The invention discloses a water gauge water level line visual detection method suitable for complex illumination conditions. By utilizing a difference between a water gauge image and a water surface image, a gray scale mean difference of a gray image and an edge image is calculated, the maximum value of the two features is taken as an index for measuring the image difference, then a water level line detection method combining coarse positioning and fine positioning is adopted, and high robustness is achieved for water gauge water level line detection under the complex lighting conditions. According to the water gauge water level line visual detection method suitable for the complex illumination conditions, detailed information of a water gauge is provided under the condition that the images are blurred, water level line detection is performed with a single pixel as a step during the fine positioning, and the detection precision can reach a single pixel. The water gauge water level linevisual detection method is suitable for the conditions of natural illumination (daytime) and infrared illumination (nighttime), and false detections due to uneven distribution of image gray scales caused by the natural illumination and nighttime fill light can be effectively avoided.

The invention provides an intelligent water level monitoring method based on image recognition. The intelligent water level monitoring method comprises: receiving image data sent by camera equipment in a tested area; detecting and identifying a water gauge part above the water surface in the image data by adopting a deep neural network, and segmenting a water gauge image above the water surface byadopting a graph cut algorithm on the basis; calculating the height of the water gauge above the water surface according to the segmented water gauge image, and obtaining the height of the water gauge below the water surface in combination with the overall height of the water gauge; the water level value can be calculated by acquiring the height of the bottom of the water gauge and the height ofthe water gauge below the water surface of the actual station. According to the method, manual on-site water level survey is not needed, image acquisition is achieved in a remote mode, analysis processing is conducted locally, the water level value is calculated, the manual operation cost is greatly reduced, and the measurement accuracy is also improved.

A liquid level measuring device includes an elongate handle and an elongate frame arranged in telescoping relationship. The frame is movable between a collapsed position for storage and an extended position for usage. A float is movable lengthwise along the elongate frame. A control rod extends lengthwise in the elongate frame and through a passage in the float. The control rod controls movement of the float relative to the elongate frame. An actuator actuates the control arm to move the float from the locked position to the unlocked position in response to a downward pressure between a lower end of the elongate frame and a bottom surface of the container so that the float is free to seek the liquid level in the container and to move the float from the unlocked position back to the locked position when the downward pressure is released.