507results about "Volume indication and recording devices" patented technology

The invention provides a non-contact river flow measurement method and system based on a target tracking algorithm, and relates to the technical field of hydrological survey, and the method comprises the steps: when a monitoring period is triggered, recognizing and determining a plurality of target floaters in a target river region through a plurality of river cameras, and carrying out the video shooting of the plurality of target floaters, a plurality of camera videos are obtained; transmitting the plurality of camera videos to a processor, and tracking and sorting the plurality of camera videos to obtain a plurality of target floating object videos; analyzing the flow velocity of each target floater according to the plurality of target floater videos to obtain a plurality of floater flow velocities, and obtaining the current river flow of the target river region; the early-stage river flow of the last monitoring period is obtained, the river flow increment is obtained through comparison, and when the river flow increment is larger than an increment threshold value, flow abnormity early warning is conducted. The technical problem that in the prior art, a contact type measurement method is inaccurate and unreliable in river flow measurement is solved.

A flow sensor for sensing fluid flow. The flow sensor includes an exterior, interior, a circuit board, and first and second ports. The first and second ports permit fluid to flow into and out of the interior. A Hall Effect Sensor in the interior detects the number of revolutions of an impeller. An electric coupler interfaces with the flow sensor and a transmitter for communication of the revolutions of the impeller to a controller. The controller determines the rate of fluid flow in a conduit. The controller issues a command signal to a component of a hydraulic system to alter the rate of fluid flow in the conduit.

The invention discloses a flood flow early warning method, a controller, a storage medium and a program product, and relates to the field of hydrological monitoring and disaster early warning. By adopting the technical scheme, after an emergency flow meter emits a first frequency modulation continuous wave to the water surface at the current position, the controller receives a first signal reflected by the water surface and analyzes the spectrum characteristic of the first signal; therefore, the stratified flow phenomenon of the water body is effectively identified. After the emergency flow velocity meter emits a second frequency modulation continuous wave to the water surface at the current position, the controller receives a second signal reflected by the water surface, determines the surface flow velocity and the subsurface flow velocity through the first signal, the second signal and a preset flow velocity calculation formula, and calculates the comprehensive flow velocity by combining the water flow layering coefficient; and finally, flow calculation is performed according to the section coefficient and the actually measured water level. According to the multi-level flow velocity measurement and analysis method, the accuracy of flood flow calculation is remarkably improved, when the instantaneous flow exceeds the preset flow threshold value, early warning is given out in time, and important support is provided for flood prevention and flood fighting.

The invention provides a device and method for measuring the flow velocity and flow of gas in a pipeline, and particularly relates to the technical field of measuring instruments, and the device comprises a flow field optimization assembly, a flow velocity sensing assembly and a signal processing assembly. The flow field optimization assembly comprises a plurality of air duct partition plates and straight pipe sections, and the gas conveying pipeline is divided into a plurality of independent divided air ducts; the flow velocity sensing assembly comprises a rectification assembly and a pressure sensing assembly, the rectification assembly comprises a pore plate and / or a grid, and the pressure sensing assembly comprises a plurality of uniformly distributed pressure sensing elements; the signal processing assembly comprises a differential pressure sensing transmitter, a static pressure sensing transmitter, a temperature sensing transmitter, an atmospheric pressure sensing transmitter and a data processing module. The pressure sensing element detects differential pressure signals, the differential pressure sensing transmitter converts the signals, the data processing module calculates the average flow velocity and flow of gas based on the signals and measurement data, and the measurement precision and accuracy are improved.

A flow sensor sub-assembly for sensing flow of a fluidic medicament is disclosed. The flow sensor sub-assembly includes a first spring contact and a second spring contact. The spring contacts are secured to a base that has a circuit for conducting an electrical signal to and from the spring contacts to a microprocessor. The first spring contact is in electrical communication with a first piezo element and the second spring contact is in electrical communication with a second piezo element. The first spring contact has a first contact force against the first piezo element and the second spring contact has a second contact force against the second piezo element, and the first and second contact forces are equivalent. A circuit board for interfacing to a flow sensor having a plurality of piezo elements for transmitting a flow signal indicative of flow of fluidic medicament is also disclosed.

The invention provides a mixed flow velocity and flow measuring device and method, and particularly relates to the technical field of measuring instruments, and the device comprises a gas mixing assembly, a flow field optimization assembly, a flow velocity sensing assembly and a signal processing assembly. The gas mixing assembly comprises a differential channel mixer and a mixing cavity, and gas premixing is achieved. The flow field optimization assembly comprises a plurality of air duct partition plates and straight pipe sections, and the mixed gas conveying pipeline is divided into a plurality of independent divided air ducts; the flow velocity sensing assembly comprises a rectification assembly and a pressure sensing assembly, the rectification assembly comprises a pore plate and / or a grid, and the pressure sensing assembly comprises a plurality of uniformly distributed pressure sensing elements; the signal processing assembly comprises a differential pressure sensing transmitter, a static pressure sensing transmitter, a temperature sensing transmitter, an atmospheric pressure sensing transmitter and a data processing module. The pressure sensing element detects differential pressure signals, the differential pressure sensing transmitter converts the signals, the data processing module calculates the average flow velocity and flow of the mixed gas based on the signals and measurement data, and the measurement precision and accuracy are improved.

A system and method for measuring or for estimating flow or flowrate of a fluid, including wastewater inflow or infiltration, using non-contact depth-based flow measurement, including: receiving a depth sensor signal from an ultrasonic depth sensor positionable over a manhole channel above an outgoing pipe's crown; receiving a temperature signal from a temperature sensor positionable within the manhole channel; receiving one or more data input signals; calculating a distance to a surface of the fluid based on the received depth sensor signal; and determining a depth of the fluid in the manhole channel based on the calculated distance. Flow velocity may be calculated using Manning's equation or the Hazen-Williams equation, with flow rate subsequently determined using the continuity equation. Alternatively, flow velocity and flow rate may be estimated using a machine learning model trained on simulated or historical time-series data of flow rate, flow velocity, and flow depth, along with pipe attributes, to generate real-time flow estimates based on current and prior flow depth measurements.

The invention discloses metering equipment and a method for metering gas flow by using an ultrasonic sound velocity difference principle, and the method comprises the following steps: rectifying gas flow in a pipeline by using a rectifier assembly to stabilize a flow field, and then measuring the ultrasonic sound velocity difference of forward and reverse propagation of the gas flow by using an ultrasonic sensor in a sensing assembly; the detected pulse signals are transmitted to the intelligent flow totalizer assembly for operation, and the actual flow velocity and flow of the gas are obtained; a pressure sensor and a temperature sensor in the sensing assembly respectively collect a pressure signal and a temperature signal of gas in the pipeline, and synchronously transmit the collected pressure signal and temperature signal to the intelligent flow totalizer assembly; and after receiving the pressure and temperature signals, the intelligent flow totalizer assembly performs temperature and pressure compensation operation in combination with actual flow velocity and flow data of the gas to finally obtain the flow velocity and flow of the gas under the standard condition. The problems of low measurement precision and large pressure loss in the traditional technology are solved.

The invention relates to a display device (1) comprising: - a housing (2) with a housing opening (3), - a transparent display window (4) which is inserted into the housing opening (3), - a display module (5), - a window holder (6) of the display window (4), which is connected to the housing (2), wherein the window holder (6) has a partially planar base body (8), wherein the display module (5) is mechanically connected to the base body (8), wherein the window holder (6) comprises at least one resilient spacer (7), wherein the at least one spacer (7) and the base body (8) are monolithic, wherein the window holder (6) has a window holder opening (9), wherein the display module (5) extends through the window holder opening (9).

The invention relates to the technical field of data storage, in particular to an ultrasonic water meter data storage method and an ultrasonic water meter. The method comprises the following steps: receiving current frame data; when the current frame data is the static configuration data, the current frame data is stored in an EEPROM chip and a Flash memory of the ultrasonic water meter; when the current frame data is the dynamic accumulated data, respectively determining storage periods of the current frame data in the EEPROM chip and the Flash memory based on the numerical value of the current frame data; and based on the storage periods respectively determined by the EEPROM chip and the Flash memory, storing the current frame data into the EEPROM chip and the Flash memory by adopting a multi-section circulating storage mode. The reliability of data storage of the ultrasonic water meter can be improved.

The invention provides a drip metering method for an ultrasonic water meter, which improves the metering precision of the water meter by accurately measuring tiny changes in water flow, particularly drip events, and comprises the following steps: firstly, a sensor of the ultrasonic water meter acquires water flow signal data in real time, including flow information, flow fluctuation and water flow state, and transmits the data to a signal processing module; through noise removal, signal gain adjustment, waveform amplitude detection and other processing, a system compares the data with a set threshold value, identifies a water dripping event, calculates a flow fluctuation difference value and judges the occurrence of a water dripping behavior, and finally, the system records detailed information of the event and stores the detailed information in a memory for subsequent query. Through the precise signal processing and water dripping event recognition method, the recognition precision of the low-flow water dripping event is effectively improved, missing report and false report are avoided, meanwhile, recording of detailed information and efficient data storage are supported, data integrity and accuracy are ensured, and the intelligent level and practicability of the water meter are improved.

The invention relates to the technical field of safe transmission, in particular to a gas meter information safe transmission method and an intelligent gas meter. The method comprises the following steps: S1, calculating a noise value and an observation value of a Hall sensor on actual gas flow; according to the method, the deviation of the observation values of the two sensors is calculated through the observation value of the Hall sensor for the actual gas flow, then whether the Hall sensor is abnormal or not is detected, and when the Hall sensor is abnormal, the gas flow is predicted by combining historical actual gas flow data, a weight coefficient and a noise value; the gas flow deviation value is calculated according to the predicted gas flow value and the actual gas flow data, whether abnormities of sudden change of the gas flow exist or not is detected, and the influence of sensor faults on gas flow detection can be reduced by detecting the abnormities of the sensor in time and predicting the gas flow, so that the gas flow detection efficiency is improved. And continuity and stability of gas flow data are ensured.

The invention relates to the technical field of intelligent water meters, in particular to an intelligent water meter data acquisition system which comprises a memory, a processor and a computer program stored in the memory and running on the processor. When the processor executes the computer program, the following steps are realized: acquiring a water consumption data sequence acquired by an intelligent water meter of a target user in a current preset period, and obtaining a water consumption data change degree; performing noise data interference analysis on the water consumption data sequence to obtain a noise interference degree; obtaining the complexity of the water data by combining the noise interference degree and the change degree of the water data, obtaining the battery capacity of the intelligent water meter at the last sampling moment of the current preset period, and obtaining the adaptive sampling frequency of the next preset period according to the complexity of the water data and the battery capacity. The intelligent water meter is used for collecting the water consumption data of the target user in the next preset period, complete recording of water consumption characteristics is ensured, redundant data are reduced, and the cruising ability of the intelligent water meter is improved.

A system (1) for measuring the flow rate of a fluid is provided, consisting of two modules (100, 200), each with its own housing and detachably connectable to one another. A first module (100) comprises a sensor element (120) for detecting a lifting body (210) for generating measurement signals, an electronic unit (130) for processing the measurement signals, an interface (S) for power supply and communication with a higher-level unit, and a memory (140) containing a list of measurement modes. A second module (200) comprises a measuring section in a measuring tube (220) and the lifting body (210) movably arranged therein. The measuring tube (220) is filled with a fluid that drives the lifting body (210). The first module (100) is configured to uniquely identify the second module (200) in order to select a measurement mode from the list of measurement modes that is suitable for the second module (200). to select.

The invention provides a helical vane type water meter, and belongs to the technical field of water meters. The partition plate is arranged in the water inlet cavity of the flow channel of the shell and located on the side far away from the water inlet, water flow entering the water inlet cavity can be blocked at the far end, the turbulent flow influence caused by direct impact of the water flow is avoided, the monitoring precision is improved, and meanwhile, the water flow is prevented from entering the water inlet cavity. The impeller assembly is rotationally installed in the fluid director which is formed by directly connecting and combining the upper fluid guiding part and the lower fluid guiding part, so that the structure for supporting the impeller assembly is simpler, the number of structures needing to be matched with each other is small, the problem that the two ends of a rotating shaft of an integrated impeller are not coaxial due to machining and assembling precision is solved, structural errors are reduced, and the machining efficiency is improved. Besides, one end of the rotating shaft of the integrated impeller extends out of the fluid director and then is provided with a magnet, the magnet is isolated from water flow, the problem that the magnet is interfered by impurities such as rust existing in the water flow is avoided, the monitoring precision of the water meter is further improved, and the service life is prolonged.

The utility model discloses a capillary tube flow detection device which comprises a gas source connector, a pressure reducing valve, a thermal type gas mass flow meter and a capillary tube connector which are sequentially connected to the outlet end of the gas source connector through a gas conveying pipe in the flowing direction of gas flow, and a controller. The controller is electrically connected with the thermal gas mass flow meter; compared with the prior art, the thermal gas mass flow meter is adopted to detect and collect flow data, on one hand, the thermal gas mass flow meter is small in size, the size of the whole detection device can be reduced, movement of equipment is facilitated, and detection convenience is improved; on the other hand, the test data of the thermal gas mass flow meter is not influenced by the environment temperature and pressure, the consistency of the data can be well kept, and therefore the precision and reliability of data detection are improved.

The utility model relates to the technical field of measuring instruments, in particular to a high-precision rotary wing type water meter which comprises a shell and an impeller rotationally arranged in the shell, the shell comprises a hollow mounting cavity and a water inlet pipe and a water outlet pipe which are located at the two ends of the mounting cavity respectively, and an impeller box provided with a plurality of through holes in the circumferential direction is arranged in the mounting cavity; the impeller is installed in the impeller box, a gear set is connected to the installation cavity, the gear set is in transmission connection with a counter used for counting, a check block capable of sealing the water inlet pipe is arranged at the position, close to the water inlet pipe, in the installation cavity in a sliding mode, the check block is connected with a compression spring, and the impeller comprises a middle shaft and a plurality of rotating blades arranged on the side wall of the middle shaft at intervals in the circumferential direction. The middle shaft is slidably sleeved with a locking assembly capable of locking rotation of the impeller, the locking assembly is in transmission connection with the check block, when no water flow exists in the water inlet pipe, the check block seals the water inlet pipe, and the locking assembly limits rotation of the impeller. The water meter impeller can be locked when no water flow exists, and the situation that the impeller rotates under the inertia effect, and counting errors are generated is avoided.

This utility model discloses an emergency diversion and intelligent early warning system for sewage and drainage risers, including a vertically arranged main sewage pipe and a blockage overflow pipe. A main pipe branch tee is installed on the main sewage pipe. The upper end of the blockage overflow pipe is connected to the main pipe branch tee. A water flow detector is installed inside the connecting pipe between the blockage overflow pipe and the main pipe branch tee to monitor the water flow in the blockage overflow pipe. A horizontally arranged main discharge horizontal pipe is connected to the lower end of the main sewage pipe, and a horizontally arranged overflow horizontal pipe is connected to the lower end of the blockage overflow pipe. This utility model effectively solves the problem of sewage backflow caused by blockage at the bottom of building sewage risers, realizes automatic emergency diversion when the pipe is blocked, and achieves real-time early warning of blockage through the linkage of the water flow detector and the buzzer alarm, allowing for timely intervention and saving maintenance costs.

The utility model discloses an intelligent water meter with an IC (integrated circuit) card, which comprises a water pipe for conveying shower water, an intelligent water meter main body mounted at the outer end of the water pipe, a fixed plate connected inside the intelligent water meter main body, a bolt connected inside the fixed plate, and an IC card sensing area arranged at the rear end inside the intelligent water meter main body, a placing groove is formed in the rear end in the intelligent water meter main body and is positioned above the IC card induction area. According to the intelligent water meter with the IC card, when a user needs to take a shower, a handle is pulled down to drive a pull rod and a baffle to move downwards together until the rear end of a placement groove is exposed, the IC card is inserted into the placement groove from the position between rubber pads at the rear end of the placement groove, a push plate is extruded after the IC card enters the placement groove, a second spring is extruded at the same time, and after the IC card completely enters the placement groove, the user does not need to take the shower. After the containing groove is located above the IC card induction area, the handle is loosened, then the first spring rebounds to push the baffle upwards, the rear end of the containing groove is closed, and installation of the IC card is completed.

A system includes a flow sensor contained within a flow sensor housing, a base, and a seal. The base houses a controller that generates at least one operation modification signal, and the flow sensor is separable from and mountable onto the base. A bottom surface of the flow sensor housing includes the seal. The seal forms a liquid-tight engagement between the flow sensor housing and the base when the flow sensor is mounted onto the base.

The utility model relates to the technical field of water meters, in particular to a rotary wing type water meter convenient to observe, which comprises a character wheel box, the character wheel box comprises a box body and a character wheel metering mechanism, the box body is provided with an inner cavity, the character wheel metering mechanism is arranged in the inner cavity, the character wheel metering mechanism comprises a rotatable character wheel set, the side wall of the character wheel set is provided with numbers, and the number of the character wheel set is larger than the number of the character wheel set. The character wheel box further comprises a cover body, a glass sealing cover and a turning cover, the cover body is provided with a reading face, a set of numbers on the side wall of the character wheel set are exposed on the reading face, the reading face is arranged in an inclined mode, the glass sealing cover seals a cavity opening of the inner cavity, the turning cover is installed on the box body in a rotating mode, and after the turning cover rotates by a preset angle, the turning cover covers or exposes the glass sealing cover. According to the utility model, the reading surface is arranged in an inclined manner, and the flip cover covers the glass sealing cover in a normal state, so that the advantages of reading in a side-looking manner and effectively preventing dust and stains from blocking the reading area are realized.

The water meter comprises an installation assembly and a detection assembly, the installation assembly is suitable for being connected with a water pipe, the installation assembly is provided with a first installation cavity with one side being provided with a first opening and a second installation cavity with one side being provided with a second opening, and the first installation cavity and the second installation cavity are communicated with each other; the detection assembly comprises a detection piece, a fixing piece and a storage piece, the detection piece is arranged in the first mounting cavity in a sliding mode and is suitable for detecting the water flow in the water pipe, the fixing piece is arranged on the detection piece, the storage piece is detachably arranged on the fixing piece and is suitable for storing water flow information, and the fixing piece is suitable for being electrically connected with the detection piece and the storage piece; and when the detection piece is mounted in the first mounting cavity under the action of external force, the detection piece is suitable for driving the fixing piece to be inserted into the second mounting cavity, so that the storage piece is synchronously mounted in the second mounting cavity through the fixing piece. The water meter with the structure can ensure that data of an enterprise cannot be leaked to a manufacturer.

A remote meter reading system for a water meter according to an embodiment of the present invention comprises: a water meter; a remote meter reading device that counts information of the water meter; a server wirelessly connected to the remote meter reading device; and a setting device that turns on the remote meter reading device, wherein the remote meter reading device may communicate with the setting device in a LoRa private manner and communicate with the server in a LoRa WAN manner.

The invention provides a micro flow measurement method and device based on computer vision and electronic equipment, and relates to the technical field of flow measurement. The micro-flow measuring method based on computer vision comprises the following steps: acquiring a grayscale image of a mechanical float flowmeter through which a fluid to be tested flows by using an image acquisition device; wherein the size of the grayscale image is a preset size value, and the shooting angle of the grayscale image is a preset shooting angle; according to a preset size value, a preset shooting angle and the gray level image, scale line position information of a floater in the mechanical floater flowmeter is determined; and determining the current flow value of the to-be-tested fluid according to the scale line position information of the floater. According to the invention, the automatic measurement of the trace flow can be efficiently realized at low cost.

The utility model discloses a non-contact flow verification and backflow alarm device, and relates to the technical field of flow monitoring. The device comprises a bottom plate, the top face of the bottom plate is fixedly connected with a material storage barrel and a supporting frame, the surface of the supporting frame is provided with a material conveying assembly used for extracting materials in the material storage barrel, a three-way valve is arranged above the material conveying assembly, and the material conveying assembly is connected with the lower end of the three-way valve. A casting feeding assembly used for conveying materials to the casting position is arranged at the left end of the three-way valve. According to the utility model, the liquid material flow is accurately measured through the non-contact sensor, so that the accurate verification of the liquid material and the real-time monitoring of the liquid material flow in the production process are realized, in addition, the liquid material backflow caused by the problem of the reversing valve in the sand filling process can be judged, and further, the liquid material can be judged not to enter the sand mixer. And meanwhile, an alarm signal is generated so as to reduce the quality problem or economic loss caused by the lack of the liquid material in the sand mold.

An apparatus for measuring at least one of the level and the velocity of a media (2) in a channel (1), the apparatus including a remote measuring device (3) which comprises: a sensing unit (11) having at least one sensing assembly (5, 6) arranged to measure at least one of the level and the velocity of the media (2), a two-wire interface (7) arranged to receive power from an external power source (9) and permit data transfer between the sensing assembly (5, 6) and an external control unit (8) over the two-wire interface (7), an energy store (10) for storing energy transmitted to the measurement device (3) over the two-wire interface (7), a controller (15), and characterised in that the remote measuring device (3) further comprises: an indicator means (12) for providing in-situ feedback to a user on the status of the measuring device (3), and a switching means (13, 14, 16) which is operable in response to signals from the controller (15) to selectively connect each of the sensing unit (11) and the indicator means (12) to the energy store (10).

A fluid flow monitoring system based on AI visual identification comprises an environment definition module used for interacting with a user terminal and defining monitoring environment requirements; the data acquisition module is used for determining acquisition conditions according to monitoring requirements, executing data acquisition and outputting the mounting angle alpha of the channel relative to the horizontal plane and the fluid liquid level width L; the fluid flow calculation module is used for defining a fluid flow calculation rule and calculating the fluid cross-sectional area S and the fluid flow velocity V of the channel; and the data monitoring module is used for interacting with a user terminal, responding to a monitoring request of the user terminal, acquiring the mounting angle alpha and the fluid liquid level width L from the data acquisition module, calling the fluid flow calculation module, calculating the real-time flow of the fluid in real time, and realizing real-time monitoring of the fluid flow. The device is suitable for monitoring the high-temperature liquid flow, the liquid pouring flow and the high-temperature metal liquid casting flow in the metallurgical industry, operation is easy, real-time performance and accuracy are high, and intellectualization is achieved.

The application discloses a nozzle flow direction test fixture and method, which comprises a clamping mechanism for clamping and positioning a part to be tested, an oil inlet mechanism for feeding test medium into the part to be tested, a test mounting seat for mounting a flow test tool or a flow direction test tool, and a plugging mechanism for plugging an oil outlet hole on the part to be tested which does not need to be measured, the oil inlet mechanism is fixedly installed on a support seat, the test mounting seat is arranged in the part to be tested and is fixed on a central shaft of the support seat, the flow test tool comprises an oil inlet copper pipe arranged in the test mounting seat and used for connecting the test medium, a measuring cup communicated with the oil inlet copper pipe, and a flow detection device arranged at the bottom of the measuring cup, the flow direction test tool comprises a measuring block fixed on a preset position of the test mounting seat, and a target hole is arranged in the measuring block at the preset position; and the plugging mechanism is arranged above the part to be tested. The application can effectively improve the accuracy of the test, is convenient to assemble and disassemble, and is high in efficiency.