117 results about "Hall effect sensor" patented technology

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.

A dendrometer, comprising a single mechanical element functionally holds a sample under test via a spring-element in the element that draws two arms firmly against the sample. The spring section of the single mechanical element can be serpentine, or any other shape providing the desired spring constant and range of motion. The one or more spring members extend between the first frame member and the second frame member, wherein the one or more spring structures are nonrigid (extensible and compressible) such that the second frame member is movable relative to the first frame member. The dendrometer comprises a toothed socket on an end of each arm to allow adjustment of the range of clamping. In at least one example, a magnet or actuator attached to one arm, and a Hall effect or other positional sensor, is attached to the alternate arm.

The invention relates to the field of gas ejectors, in particular to a valve needle stroke monitoring device and method.The valve needle stroke monitoring device comprises a clamping mechanism, a magnetic induction mechanism, a double-guide reset mechanism and a shell mechanism, and the clamping mechanism is used for clamping a valve body of the gas ejector; the magnetic induction mechanism comprises an ejector rod, a magnet and a Hall effect sensor, one end of the ejector rod is configured to be in contact with the end part of a valve needle of the gas ejector, the magnet is arranged at the other end of the ejector rod, and the Hall effect sensor is arranged opposite to the magnet to detect the displacement of the magnet; the double-guide reset mechanism is used for providing axial reset force for the ejector rod; the shell mechanism is used for integrating the clamping mechanism, the magnetic induction mechanism and the double-guide reset mechanism. According to the method, the real-time stroke of the valve needle is calculated according to the difference value between the real-time position signal and the initial position signal. By adopting the technical scheme, the stroke of the valve needle can be directly measured in a high-precision, high-reliability and convenient-to-mount manner.

The invention relates to the technical field of current sensing, in particular to induction type micro self-powered wireless current sensing equipment which comprises an external measurement shell, a Hall effect sensor arranged in the external measurement shell and an arc-shaped assembly seat installed on the inner wall of the external measurement shell. Close-to-close adjustment operation can be carried out according to cables of different specifications, so that the measurement distance is reduced, and the measurement precision is improved. An electric control type sliding adjusting frame used for installing a Hall effect sensor is assembled on the outer side of the overturning guide frame in a sliding mode, the measuring position of the sensor is changed in an electric control sliding adjusting mode, and therefore the sensor is controlled to be adjusted along the periphery of the cable, and the measuring range is widened. The electric control type sliding adjusting frame is driven by the lateral driving wheel to slide in the internal guide groove, unfolding and folding can be controlled by changing the position, and self power supply can be facilitated.

In various examples, there is an apparatus for measuring a deterioration condition of a shoe, the apparatus comprising at least one Hall effect sensor located proximate a first surface of a sole of the shoe; at least one magnet positioned proximate a second surface of a sole of the shoe; and a communication component in electronic communication with the or each Hall effect sensor via a conductive connector. The communication component is operable to transmit data from the Hall effect sensor to an external device. Figure 3 is attached when published.

This invention relates to the technical field of computer input devices, and more particularly to a high-performance magnetic axis keyboard. The key features of this technical solution are: a keyboard body, a magnetic axis, and keycaps. The magnetic axis includes: a housing connected to the keyboard body; a core, vertically mounted within the key axis, the core having a magnet; a Hall effect sensor located in the housing and engaging with the magnet; a floating element vertically mounted in the housing; a spring connected to both the core and the floating element; and an adjusting element located in the housing and connected to the floating element. The adjusting element drives the floating element to adjust its position, thereby controlling the initial compression of the spring. This application enables the adjustment of the magnetic axis keyboard's actuation force, thus solving the problems of limited actuation force and monotonous tactile feedback in magnetic axis keyboards.

A fully integrated micro search coil magnetometer (μSCM) with a low-noise instrumentation amplifier is provided for low-frequency magnetic field measurements in the range of 1Hz to 1kHz. A micro search coil formed by stacking planar spiral inductors and serially connecting them with an in-phase configuration is used for magnetic field measurements. The critical line width and inner diameter of a planar spiral inductor are theoretically calculated and experimentally verified, enabling the development of a unique CMOS layout. This layout incorporates the calculated critical inner diameter, significantly optimizing the area utilization on the CMOS die. Additionally, the CMOS die includes a polysilicon-layer inductor for on-chip calibration, a Hall effect sensor for DC magnetic field measurement, and a temperature sensor for enhanced functionality. The μSCM delivers a compact, energy-efficient, and highly sensitive solution for low-frequency magnetic field measurements, surpassing the performance of most commercially available Hall effect sensors.

This utility model discloses an automatic oil injector, comprising: a sensor detachably connected to the automatic oil injector; a base having an internal mounting area and an external operation panel area; a pump mounted in the mounting area; a control board electrically connected to a first sensor, the first sensor being positioned corresponding to the operation panel area; the pump being electrically connected to the control board; the first sensor being used to collect information on the duration of the sensor's proximity to the first sensor; and an indicator light located in the operation panel area; the indicator light being electrically connected to the control board; the indicator light, according to a control signal from the control board, performing any one of the following actions: constantly on, off, flashing, or color changing. The first sensor is a Hall effect sensor, and the sensor is connected to a magnet. A lubricant container is also included, and the base is detachably connected to the lubricant container.

This application discloses an elevator floor acquisition method and related equipment, belonging to the field of elevator control technology. The method includes: acquiring real-time operating data of a target elevator using Hall effect sensors and a barometric pressure sensor; wherein the operating data includes the direction of travel, speed, and operating signal; calculating the absolute position of the target elevator based on the operating data; and acquiring the floor information of the target elevator based on its absolute position and a pre-built floor reference position table; wherein the floor information includes the current floor and the floor ahead. This application, by installing Hall effect sensors and a barometric pressure sensor on the elevator to acquire elevator operating data, can obtain the floor information of the target elevator, providing basic data support for improving the scheduling logic of a general group control system and effectively improving the rationality of the scheduling logic.

The invention discloses a hole bottom standard penetration test device and a use method, and relates to the field of geotechnical investigation. The device comprises a shell, a heavy hammer, a hammering rod, a rotary driving device and a heavy hammer rising and falling device, the heavy hammer is provided with a bearing and pulling assembly, the heavy hammer rising and falling device is provided with a hooking and pulling assembly, the rotary driving device drives the heavy hammer rising and falling device to rotationally rise and fall, connection or disconnection of the hooking and pulling assembly and the bearing and pulling assembly is achieved, and a Hall effect sensor is used for sensing the connection state. Anti-rotation strips are arranged on the inner wall of the shell, narrow-edge notches and wide-edge notches are formed in the heavy hammer and the heavy hammer rising and falling device respectively to be matched with the anti-rotation strips, and movement stability is guaranteed. When in use, the device is lowered after drilling, the heavy hammer rising and falling device is controlled to be connected through the rotary driving device, the heavy hammer is lifted to freely fall to drive the hammering rod, the operation is repeated until the penetration depth reaches the standard, and the hammering frequency is recorded. The device avoids wiring in the motion stroke of the heavy hammer, improves the stability, solves the problems of deep test hammering energy loss and difficulty in cable winding and unwinding of a traditional device, and improves the test accuracy and applicability.

This utility model discloses a monitoring matrix for monitoring water levels in dams, relating to the field of water level monitoring technology. It includes a dam sidewall with multiple extension plates installed on it. Each extension plate has a sliding groove inside, which communicates with the interior of the dam. A bracket is installed on each of the upper ends of the extension plates, located on either side of the sliding groove. A first fixed shaft is connected between two brackets, and a traction rope is mounted on the surface of the first fixed shaft. One end of the traction rope extends into the sliding groove and is fitted with a float. A longitudinal groove is formed at the upper end of the dam sidewall. This utility model, through a series of structures and the cooperation of multiple Hall effect sensors and floats, overcomes the limitations of traditional single-point monitoring. It achieves full-area coverage of dam water levels using a mechanical transmission matrix. Compared to purely electric monitoring equipment, it has lower maintenance costs and frequency, and the mechanical structure is less susceptible to the effects of extreme environments.

The invention discloses a high-voltage distribution box current detection system and method and a storage medium, and relates to the technical field of vehicle high-voltage system current detection. The system comprises a high-voltage distribution box and a processing assembly, the high-voltage distribution box is arranged to distribute high-voltage electric energy to at least one high-voltage electric appliance assembly in the vehicle, a Hall effect sensing assembly is arranged in the high-voltage distribution box, and the Hall effect sensing assembly is arranged to conduct Hall sensing on a high-voltage discharge loop in the high-voltage distribution box to obtain output voltage; and the processing assembly is connected with the Hall effect sensing assembly and is used for carrying out current conversion on the output voltage to obtain a current detection result. According to the invention, the technical problems of low current detection precision and high cost of the automobile high-voltage distribution box in the prior art are solved.

The utility model discloses a fire-fighting appliance cabinet, which relates to the fire-fighting field and is characterized by comprising a shell and a cabinet door rotatably connected to the shell, the inner top surface of the shell is fixedly connected with a lighting lamp panel and a controller, a Hall effect sensor is arranged in the controller, the lighting lamp panel is electrically connected with the controller, and the Hall effect sensor is electrically connected with the controller. And the inner side of the cabinet door is fixedly connected with a magnetic block. The controller controls the illuminating lamp panel to emit light, illumination is provided for the interior of the shell, a user can conveniently take and use fire-fighting articles in the fire-fighting article cabinet, the efficiency of handling dangerous cases by the user is improved, when the user takes out the fire-fighting articles, the state of the pressure-sensitive switch changes, the prompting lamp panel is lightened, other users are prompted that the fire-fighting article cabinet is empty, and the safety of the fire-fighting articles is improved. And other users can conveniently judge the condition in the fire-fighting article cabinet.

The invention discloses a water tank structure for dehumidification, a dehumidifier of the water tank structure and a method for calculating the water volume of a dehumidification water tank. The water tank structure comprises the dehumidification water tank installed on a dehumidification body. A water level sensing floater and a water fullness sensing floater are arranged on the inner wall side, close to the dehumidification body, in the dehumidification water tank, and a Hall sensing plate used for sensing the water level position where the water level sensing floater is located to conduct sensing calibration so as to display the water level height is installed on the dehumidification body. A water full sensing point corresponding to the water full sensing floater is arranged at the topmost end of the Hall sensing plate; a plurality of groups of Hall sensing points are arranged in the dehumidification main body along the vertical direction, and the floater moves in the vertical direction of the Hall sensing points to monitor, calibrate and display the amount of the condensed water stored in the box body in real time, so that a user can conveniently observe and make a water pouring plan in advance.

System for determining the amount of pressure applied to a brush head (12) and for providing feedback to a user as soon as a measured pressure reaches a predetermined threshold, the system comprising: a brush head (12); a drive unit (14) connected to the brush head (12), wherein the drive unit (14) has a drive shaft (42) which is activated to move the brush head (12) relative to the drive shaft (42); a magnet (60) which moves in a repeating manner as a function of the movement of the drive shaft (42); a Hall effect sensor (62) which generates a signal based on the movement of the magnet (60); a feedback device; and a microprocessor (64) connected to the Hall effect sensor (62) and the feedback device, wherein the microprocessor (64) is programmed to activate the feedback device as a function of the change in the speed of movement of the magnet (60), wherein the movement of the drive shaft (42) is a rotational movement, wherein the movement of the drive shaft (42) is an oscillating rotational movement about an axis, and wherein the microprocessor (64) generates a signal based on the change in the rotational speed of the drive shaft (42).

This utility model belongs to the field of marine technology, specifically relating to a multi-level equalization management system for marine lithium battery packs. It includes a main control chip, a voltage detection circuit, a current detection circuit, a temperature sensor, and an equalization switch array. By employing a voltage detection circuit composed of operational amplifiers and voltage divider resistors, a current detection circuit composed of Hall effect sensors and low-noise amplifiers, temperature sensors arranged at multiple locations within the battery pack, and an equalization switch array composed of transistors, it achieves high-precision acquisition and rapid response control of battery parameters. This solution improves the system's stability and equalization efficiency in complex environments, effectively solving the problems of untimely and inaccurate equalization control caused by insufficient monitoring accuracy and response lag in existing technologies, thereby significantly improving the safety and service life of marine lithium battery packs.

This utility model provides a fault location device for low-voltage engineering, relating to the field of low-voltage engineering technology. It includes a main body for the fault location device, with an annular base at the top and three sensor groups mounted on the annular base. A telescopic rod is located at the bottom of the main body, and a folding arm is hinged to one side of the main body. The device employs a three-layer stacked design of a high-frequency electromagnetic induction coil, an infrared thermopile, and a Hall effect sensor, combined with a triangulation algorithm, to improve fault location accuracy to ±2%, far exceeding the ±8% to 10% accuracy of traditional equipment. Furthermore, the annular base is driven by a stepper motor and, in conjunction with a magnetic encoder, achieves 360° high-precision rotation scanning, avoiding errors caused by manual movement, making it particularly suitable for detecting narrow or concealed wiring.

The invention relates to the technical field of detection, in particular to a fault detection method and device, electronic equipment and a program product. The method is used for detecting a fault of a Hall sensor, the Hall sensor is used for measuring the rotating speed of a vehicle motor, the fault detection method comprises the steps that the rotating speed error of the motor is monitored, the rotating speed error is the error value between the first rotating speed of the motor and the second rotating speed of the motor, and the first rotating speed is determined based on a model of the motor; the second rotating speed is measured based on a Hall sensor; and when a preset condition is satisfied, determining that the Hall sensor has a fault, the preset condition comprising that the rotating speed error is continuously increased and the first rotating speed is greater than a preset first rotating speed threshold. Therefore, the accuracy of sensor fault detection can be improved, and an additional hardware detection circuit is not needed, so that the circuit cost is reduced.

Safety device for flame control of a plurality of gas burners, in which each burner (2i) comprises:-a thermocouple (30j) positioned to be hit by at least one flame (8) generated by said burner (2j) and inserted into a thermoelectric circuit controlling the supply of gas to said burner (2i),-an electromagnet (20) belonging to said thermoelectric circuit and acting on a shutter element (16) of a solenoid valve (10j), the invention relates to a gas burner (2j) comprising:-an electromagnetic valve (32) provided in a gas supply conduit leading to said burner (2j),-an electrical contact device (32i, 33i, 38i, 39i) powered by a mains voltage and configured to allow current to flow in said thermoelectric circuit in the presence of said mains voltage and to prevent current flow in the absence of said supply voltage, -a Hall effect sensor (48) for monitoring the current generated by said thermocouples (30i), characterized in that each burner (2j) comprises a first connection connected to the thermocouple (30j) associated therewith of said electromagnet (20), and a second connection connected to the same thermocouple (30) of the Hall sensor (48) common to all burners (2j), an electrical contact device (32j, 33i, 38i, 39j) is inserted in each of the first and second connections, which electrical contact device is controlled by a single control unit (46), and a single control unit (46) powered by mains supply and configured to periodically and temporarily close the electrical contact means (33i, 39i) inserted into the second connection of the thermocouple (30i) associated with the burner (2i) when the burner (2j) is in an operating state, and simultaneously opening the electrical contact means (32i, 38i) inserted into a first connection of the same thermocouple (30j) and the electrical contact means (33j, 39j) inserted into a second connection of all other thermocouples (30j) associated with other burners (2j) in operation, said electrical contact means (32i, 38i) inserted into said first connection of all thermocouples (30j) being connected to said burners (2j) in operation. 38i) is selected to be shorter than a switching time of a solenoid valve (10j) associated with each of the electromagnets (20).

The utility model discloses a spatial positioning and pointing mechanism. The mechanism comprises a structure supporting piece, a stepping motor, a harmonic reducer, a Hall angular displacement sensing device and a controller, wherein the structure supporting piece comprises a bearing seat and an output shaft; the stepping motor is used for driving a rotor of the stepping motor to rotate according to the pulse signal; a flexible gear of the harmonic reducer is connected with the output shaft, and a rigid gear is connected with the bearing seat; the wave generator is connected with a rotor of the stepping motor; the Hall effect sensor is installed at the fixed end of the output shaft, and the magnetic steel is installed at the rotating end of the output shaft. The controller is used for receiving the output voltage of the Hall angular displacement sensing device and calculating the position of the spatial positioning pointing mechanism according to the angular displacement and the angular velocity. The mechanism adopts the Hall effect sensor, so that the structure is more compact, the weight and the size are obviously reduced, and the assembly difficulty is reduced; the harmonic reducer is adopted to improve the angular displacement resolution, the output torque is larger, and the application range is wider.

The invention relates to an abnormal discharge current detection method and device for electric spark discharge machining, and is applied to the technical field of discharge machining. A direct current-direct current power supply module is adopted as a current detection core element, has a stable voltage output characteristic and is sensitive to current fluctuation response, and a traditional Hall sensor is replaced; the problem of high-precision detection of small current in a strong electromagnetic interference environment is successfully solved; on the basis of current rising edge characteristic differences of abnormal discharge and normal discharge, two key time points are selected for voltage comparison, abnormal states such as excessive arc, arc, short circuit and micro open circuit can be accurately distinguished, and missed judgment and misjudgment are avoided; a reference value lookup table corresponding to different peak currents is established through experimental calibration to adapt to various medium and finish machining parameter scenes; and the detection branch adopts the design of an isolation diode and a current-limiting resistor, and is matched with pulse-type intermittent measurement of a controlled switch tube, so that shunting interference on a main discharge loop is avoided, and the stability of the processing process is ensured.

This invention relates to the field of intelligent delivery and autonomous navigation technology, specifically to an intelligent delivery vehicle. It includes a vehicle body assembly and a charging pile assembly. A transmission assembly is installed at the bottom of the vehicle body assembly, and a top-mounted temperature control and insulation device is installed inside the roof at the top of the vehicle body assembly. A binocular camera and millimeter-wave radar are installed at the front upper part of the roof. A food dispensing port is located at the rear of the vehicle body assembly. A transmission-driven food storage device is installed inside the vehicle body assembly, and temperature sensors and Hall effect sensors are installed on the food storage unit. The transmission-driven food storage device is driven by a drive mechanism. A main control chip is also installed inside the vehicle body assembly. The top-mounted temperature control and insulation device, temperature sensors, Hall effect sensors, transmission assembly, binocular camera, millimeter-wave radar, and drive mechanism are all controlled by the main control chip. This invention achieves full-process automation from order receiving, intelligent loading, dynamic route planning, precise delivery, seamless food dispensing to autonomous charging, adapting to complex campus scenarios, reducing operating costs, and significantly improving delivery efficiency and safety.

Systems and methods for sensing current utilize a coil-less sensor based circuit to detect current. The current sensing circuit includes a first conductive line segment that carries mains AC current, and a second conductive line segment conductively coupled in electrical parallel to the first line segment. The coil-less sensor is mounted between the two conductive line segments proximate to and generally opposite the second conductive line segment. Any suitable coil-less sensor may be used, including Hall effect sensors, tunneling magneto resistive (“TMR”) sensors, anisotropic magneto resistive (“AMR”) sensors, and other types of sensors that do not use coils to sense current. This arrangement results in two magnetic fields being induced that are additive at the coil-less sensor, which allows the sensor to produce a higher output voltage, thereby providing a more accurate current sensor.

There is described a method of determining a rotor position indicator (166, theta), in particular a rotor electrical angle, of an electrical machine (100) having a stator (102) and a rotor (103), in particular of a wind turbine (160), in particular of a permanent magnet synchronous generator, the method comprising: receiving encoder measurement data (168) regarding a rotor position from an incremental mechanical encoder (127), the incremental mechanical encoder is mounted so as to sense a relative rotor position; receiving Hall effect sensor measurement data (169) from at least one, in particular at least three, Hall effect sensors (120), in particular binary sensors, which are mounted at the stator (102) in order to sense magnetic field variations; the rotor position indicator (166) is determined based on the encoder measurement data (168) and the Hall effect sensor measurement data (169).

The utility model discloses a motorcycle idling start-stop controller with dormancy control, which comprises a dormancy control module, a Hall power supply module, a half-bridge driving module, a CAN (controller area network) communication module, a start power generation motor, an MCU (microprogrammed control unit) and a power switch for controlling a vehicle power supply, the Hall power supply module, the half-bridge driving module and the CAN communication module are electrically connected with the dormancy control module, the starting power generation motor is provided with a Hall sensor, the MCU is electrically connected with the dormancy control module and the Hall sensor, and the Hall power supply module can supply power to the Hall sensor when the power switch is closed. The MCU can detect the working state of the starting power generation motor through the Hall sensor, and the dormancy control module can control the Hall power supply module, the half-bridge driving module and the CAN communication module to enter a dormancy mode according to a received dormancy electric signal. The energy-saving device is good in energy-saving effect.

The invention discloses a multi-conductor current non-intrusive measuring device, which comprises a main measuring housing connected with an auxiliary measuring housing; hall effect sensors are installed on the inner walls of the main measuring housing and the auxiliary measuring housing. The main measurement housing and the auxiliary measurement housing are slidably connected with an arc-shaped overturning limiting cover, and the main measurement housing and the auxiliary measurement housing are sleeved on the outer side of the conductor through the arc-shaped overturning limiting cover; according to the invention, the main measuring housing and the auxiliary measuring housing are designed to be of a split structure, so that the main measuring housing and the auxiliary measuring housing can be respectively sleeved on different conductors and are conveyed along the conductors in a synchronous conveying manner, and the current of the conductors is detected through the internal Hall effect sensor in the conveying process, so that manual operation is not needed, and the operation is very simple and convenient; and meanwhile, the arc-shaped overturning limiting covers are assembled on the outer sides of the main measurement cover shell and the auxiliary measurement cover shell in a sliding manner, and the strip-shaped loading and unloading opening is closed, so that separation from the conductor in the conveying process is avoided, and the safety and the stability in the detection process are improved.

The utility model relates to the technical field of automobile parts, and provides a Hall wheel speed sensor and an automobile electronic control system. The Hall type wheel speed sensor comprises a separated Hall sensing head; a body circuit portion; and the connector is configured to electrically connect the Hall sensing head with the body circuit part and keep space separation between the Hall sensing head and the body circuit part. According to the utility model, through the separated Hall sensing head and the function multiplexing connector, the problem that the existing Hall wheel speed sensor cannot meet the use requirement under the high-temperature working condition is effectively solved, so that the Hall wheel speed sensor is suitable for the high-temperature working condition; and accurate and effective detection of the wheel speed can be realized under various working conditions.

The present invention relates to a device for measuring the distance between two substantially parallel surfaces of an object comprising an electronic device with a Hall effect sensor. The device comprises a mechanical uncoupling system which isolates the object to be measured from the measuring device so as to eliminate the interactions which may affect the measurement. The invention also relates to the use of said device in measuring the thickness of a rubber layer of a tyre, and more specifically in measuring the remaining thickness of a tread.

The utility model discloses an electrical control cabinet with anti-electric shock structure belongs to electrical control cabinet technical field. The utility model discloses a cabinet body, the both ends of cabinet body are hinged with the cabinet door, is installed with hall effect sensor on the cabinet door, is equipped with the heat dissipation hole on cabinet body outer wall both sides, the both sides of cabinet body inner wall are installed with micro -switch, four corner places of cabinet body inner wall all install the adjusting plate, and a row of mounting hole is equipped on the adjusting plate, and the mounting hole is connected through bolt thread connection shelf. The utility model discloses through hall effect sensor, micro -switch, adjusting plate and shelf cooperation, through the automatic cut -off main circuit of micro -switch of shelf sliding time trigger, ensure the safe operation of overhaul, through hall effect sensor real -time monitoring leakage current and timely alarm, avoid the risk of electric shock in advance, reduce accidental electric shock possibility, improve equipment safety and operation reliability.

This invention discloses a control method for switching between a Hall effect linear trigger and a mechanical button on a control handle, relating to the field of control handle technology. During or after switching, a special operation is applied to the trigger or push rod of the control handle to provide a first switching signal or a second switching signal to the control system. Upon receiving the first switching signal, the control system does not perform conversion output control on the Hall effect sensing signal obtained from pulling the trigger until the short-stroke switch is pressed. Upon receiving the second switching signal, the control system pulls the trigger and performs conversion output control on the obtained Hall effect sensing signal. By inputting the first or second switching signal to the control system during or after switching, the control system can determine whether a switch has occurred and the mode of switching, thereby enabling it to decide whether to respond to the Hall effect sensor's sensing signal, resulting in more intelligent control.