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261 results about "Reed switch" patented technology

The reed switch is an electrical switch operated by an applied magnetic field. It was invented at Bell Telephone Laboratories in 1936 by Walter B. Ellwood. In its simplest and most common form, it consists of a pair of ferromagnetic flexible metal reeds contacts in a hermetically sealed glass envelope. The contacts are usually normally open, closing when a magnetic field is present, or they may be normally closed and open when a magnetic field is applied. The switch may be actuated by an electromagnetic coil, making a reed relay, or by bringing a permanent magnet near the switch. When the magnetic field is removed, the reeds in the reed switch return to their original position.

Rainfall measuring device

The utility model provides a rainfall measuring device, which relates to the technical field of rainfall measurement, and comprises an upper rainwater collecting funnel, a middle cone pulley and an upper tipping bucket, the middle cone pulley is arranged on the inner side of the upper rainwater collecting funnel, the upper tipping bucket is arranged below the upper rainwater collecting funnel, and inner drainage plates are annularly arrayed on the inner wall of the middle of the upper rainwater collecting funnel. An upper conical frame is fixed to the inner side of the middle of the upper rainwater collecting funnel, upper drainage plates are fixed to the top of the upper conical frame in an annular array mode, lower supporting columns are fixed to the two sides of the lower portion of the upper rainwater collecting funnel, the lower ends of the lower supporting columns are fixedly connected with a lower base, and a reed pipe counting module is fixed to the upper portion of the lower base. A lower inclined scraping strip and a lower scraping frame clean attachments such as moss on the inner side of the upper rainwater collecting funnel at the same time, the interval period of cleaning and maintaining of the upper rainwater collecting funnel is prolonged, and the problems that silt, dust and moss hinder downward flowing of water in the rainwater collecting funnel, and personnel need to clean the rainwater collecting funnel regularly are solved.
Owner:SHANDONG PINGZHONG ENG DESIGN CO LTD

Defibrillation assembly energizable through electrode enclosure manipulation

In one embodiment, a defibrillation assembly energizable through electrode enclosure manipulation is provided. The defibrillation assembly includes a magnetically triggered reed switch; an energy storage element that supplies power to the magnetically triggered reed switch; circuitry configured to generate a defibrillation waveform, wherein the circuitry is isolated from the energy storage element by the electromechanical component; and a case within which at least a portion of the housing is located and comprising an electrode enclosure within which a magnet is positioned that keeps the magnetically triggered reed switch in an open position, wherein an opening of the case that comprises removal of the magnet from the position causes the magnetically triggered reed switch to switch into a closed position and for the power to flow to the circuitry through the magnetically triggered reed switch.
Owner:BARDY TECH INC

Refrigerator

The utility model relates to the technical field of refrigerators, in particular to a refrigerator which comprises a refrigerator body. A refrigerator door configured to close the refrigerator body; the magnetic reed sensor assembly is constructed to monitor opening and closing of a refrigerator door, the magnetic reed sensor assembly is arranged on the refrigerator main body, and the magnetic reed sensor assembly comprises a cover piece main body constructed to be connected with the refrigerator main body, and the cover piece main body is provided with a containing part; a printed circuit board configured to be accommodated in the accommodating portion; and at least one reed switch connected to the printed circuit board, wherein the reed switch is arranged on one side of the printed circuit board facing the accommodating part. According to the embodiment of the invention, the magnetic reed sensor assembly can be reliably mounted on the refrigerator main body through the cover piece main body; meanwhile, the reed switch is installed on the side, facing the containing part, of the printed circuit board, the other side of the printed circuit board protects the reed switch, the reed switch is prevented from being collided and damaged in the assembling or transporting process, and the assembling efficiency and the product reliability are improved.
Owner:BSH ELECTRICAL APPLIANCES (JIANGSU) CO LTD +1

Current measuring circuit based on quadrupole mass spectrometer

The invention discloses a current measuring circuit based on a quadrupole mass spectrometer, and the circuit comprises an input module which is used for receiving a current signal from the quadrupole mass spectrometer; the current detection module is used for carrying out current measurement on the current signal; wherein the current measurement module comprises a positive current measurement unit and a negative current measurement unit, the positive current measurement unit is used for measuring the positive current of the quadrupole mass spectrometer, and the negative current measurement unit is used for measuring the negative current of the quadrupole mass spectrometer; according to the current measurement circuit, small current linear amplification and large current logarithmic amplification are realized through the current measurement module, so that a high-range measurement effect is achieved, fA level-uA level current measurement can be realized, and meanwhile, automatic range switching is realized through circuit characteristics; and the cost is about one fiftieth of that of a reed switch range switching scheme.
Owner:CHENGDU RUIBAO ELECTRONIC TECH CO LTD

Magnetic reed switch and preparation method thereof

The invention provides a magnetic reed switch and a preparation method thereof, and the preparation method comprises the steps: carrying out the grooving of a nickel-iron wire or a nickel-iron sheet, and obtaining a static reed with one end provided with a first positioning groove; grooving the nickel-iron wire material and welding a hollow pipe to obtain a movable contact spring with a second positioning groove at one end; plating layers are plated on the surfaces of the movable reed and the static reed; metal pieces are welded to the first positioning groove of the static reed and the second positioning groove of the movable reed, and a static reed assembly and a movable reed assembly are obtained respectively; the ends, provided with the metal pieces, of the movable reed assembly and the static reed assembly are packaged in a glass tube, the metal pieces in the movable reed assembly and the static reed assembly are arranged in a non-contact crisscross mode, and finally the magnetic reed switch is manufactured. By additionally arranging the high-melting-point metal pieces which are distributed in the crisscross manner at the end parts of the movable magnetic reed and the static magnetic reed, the magnetic contact area is effectively reduced, the rebounding time of the magnetic reed is shortened, and the ablation of a switching arc to the magnetic reed is reduced.
Owner:WENZHOU HONGFENG NEW MATERIALS RESEARCH INSTITUTE CO LTD

Multipurpose rainfall monitoring tester

The invention relates to a multipurpose rainfall monitoring tester which comprises a microprocessor module, the microprocessor module is electrically connected with an LED display module, a relay output module, a reed switch test module, an isolation power supply module and a power supply module, and the relay output module is used for simulating a switch of a rainfall tester. The reed switch test module is used for detecting the state of a reed switch, the isolated power supply module is electrically connected with the reed switch test module, and the power supply module is electrically connected with the LED display module, the relay output module, the reed switch test module and the isolated power supply module. The invention has the advantage of facilitating the monitoring of the rainfall tester.
Owner:HENAN KETUO ELECTRONIC TECH CO LTD

A port for daisy chain topology

A system having, for example, data lines. In a case of any device that loses power, to keep communications, the data lines may be disconnected from, for instance, a physical layer transceiver, and at the same time, the lines may be connected to other lines to bypass the powered-off device. FETs and reed switches may be used for connection, disconnection and bypass functions.
Owner:HONEYWELL INTERNATIONAL INC

Sensing relay module, sensing relay device and sensor and electrical relay assembly

Aspects disclosed herein relate to sensing relay modules, sensing relay devices, and sensor and electrical relay assemblies. In one aspect, the sensing relay module may include a housing, and a reed switch and a relay within the housing, where the reed switch and the relay are separated from each other by a barrier, and where the reed switch is connected to an input of the relay within the second compartment, where the reed switch is connected to an input of the relay.
Owner:DONGGUAN LITTELFUSE ELECTRONICS CO LTD

Level sensors for precursor vessels and related systems and related methods

Some embodiments of the present disclosure relate to a system, comprising a vessel; at least one tray located in the vessel; a tube extending into the vessel to a location beneath the at least one tray; and a level sensor comprising: at least one reed switch located on the tube; and at least one toroidal magnet, wherein the tube extends through an opening defined by the at least one toroidal magnet, such that the at least one toroidal magnet is slidably engaged with the tube; wherein, when a solid precursor is loaded onto the at least one tray, the at least one toroidal magnet is configured to rest on a surface of the solid precursor; wherein the level sensor is configured to sense changes in the location of the at least one toroidal magnet relative to the at least one reed switch to sense precursor levels within the vessel. Also described is a vessel for delivering solid precursor vapor where a sensor or heater is connected through a gas exchange port of the vessel.
Owner:ENTEGRIS INC

Connecting rod floating ball liquid level switch

The connecting rod floating ball liquid level switch comprises a shell, a connecting piece and a probe rod, an opening is formed in the lower side of the shell, the connecting piece correspondingly seals the opening and is fixedly connected with the shell through a flange, and a threaded insertion opening matched with the probe rod is formed in the lower end of the connecting piece. The probe rod is hollow, the probe rod, the connecting piece and the shell are communicated with one another, a junction box is fixedly arranged on the shell in a penetrating mode, the probe rod is sleeved with a floating ball piece in a sliding mode, a plurality of reed pipes are arranged in the probe rod, and a permanent magnet is fixedly arranged in the floating ball piece. Limiting detection of liquid can be carried out in the tank body, and the industrial application requirement is met; in the limiting detection mode, the liquid reaches the detected height, switching action is generated, and multiple functions such as overflow protection can be achieved.
Owner:SHANGHAI FEEJOY ELECTRONICS TECH CO LTD

Two-code-value wireless chip RFID electronic tag

The utility model discloses a 2-code-value wireless chip RFID electronic tag, and belongs to the technical field of radio frequency communication. Which comprises a shell and is characterized in that mounting holes are symmetrically formed in the right sides of the front and rear sides of the top of the shell, a two-code value device is arranged in the front of the interior of the shell, and a potting object is arranged in the rear of the interior of the shell. According to the device, market requirements are combined, some special occasions or products need dual-system identity authentication, a novel dual-circuit and dual-chip technology and a parallel glass reed switch on-off technology are adopted, free switching between the two circuits is achieved, a user can collect label data on two side faces respectively according to requirements, and the user experience is improved. Mounting is carried out through the mounting holes, so that mounting is more convenient and faster, epoxy resin is encapsulated in the shell, it is guaranteed that the device structure cannot be damaged after curing, meanwhile, the epoxy resin is a recyclable material and cannot pollute the environment, the concept of sustainable development is met, and dual-system identity authentication is achieved through mutual cooperation of the reed switch, the IC1, the IC2 and the inductor.
Owner:ZHUHAI JINGCHEN TECH CO LTD

Stable and reliable high-voltage-resistant high-power multi-point contact type reed switch

The utility model relates to the technical field of reed switches, in particular to a stable and reliable high-voltage-resistant high-power multi-point contact type reed switch. The stable and reliable high-voltage-resistant high-power multi-point contact type reed switch comprises a glass tube, a moving plate fixing rod, a beryllium copper straight elastic piece, a silver contact point, a riveting bolt, a contact point contact piece, a contact lower straight elastic piece and a fixing piece, the glass tube serves as a main body of the reed switch and is of a tubular structure, the glass tube is in a closed state, and the moving plate fixing rod and the silver contact point are fixed through the fixing piece. The glass tube is filled with inert gas, one end of the moving plate fixing rod is fixed to the left side in the glass tube, the fixing plate is fixedly installed on the right side in the glass tube, and the copper-plated straight elastic piece is installed at the right end of the moving plate fixing rod through a riveting bolt. The multi-point contact design of the silver contact point and the contact lower straight elastic sheet and the contact point contact sheet and the fixed sheet is adopted, a stable conduction circuit is formed under the action of a magnetic field, the contact reliability of the reed switch under various working conditions is greatly improved, and the risk of poor contact or open circuit is reduced.
Owner:HUBEI SONGMING INTELLIGENT SENSOR TECH CO LTD

Reed switch spin dryer

The utility model relates to the technical field of reed pipe processing equipment, in particular to a reed pipe spin dryer which comprises a barrel body provided with a drain pipe. The water filtering barrel is rotationally connected to the interior of the barrel body, a positioning unit is installed in the water filtering barrel, the positioning unit is provided with a plurality of containing holes used for containing reed switches, and the upper portions of the containing holes are blocked and sealed through a sealing cover; a plurality of reed switch products can be placed in the positioning unit at a time, so that batch spin-drying operation of the products can be achieved, independent protection is achieved, the driving assembly is adopted to drive the water filtering barrel to rotate at a high speed, the positioning unit is made to rotate at a high speed, and the products are dewatered through centrifugal force. In addition, the heating unit is additionally arranged in the cleaning device in an auxiliary mode, the cleaned products are dewatered and evaporated to dryness in a heating and centrifugal spin-drying mode, a protection effect is achieved on processing and storage of the reed pipes, and the appearance quality of the products can be improved.
Owner:SHENZHEN SMALL MAGNETIC TECH CO LTD

High-sensitivity termite detection device convenient to assemble

The utility model discloses a high-sensitivity termite detection device convenient to assemble, which comprises an upper top shell, a containing cylinder, an induction trigger piece and bait wood, a magnetic reed switch is arranged in the upper top shell, the magnetic reed switch is provided with a metal reed, a supporting column is arranged in the center of the lower part of the upper shell, and the upper part of the upper shell is provided with an induction trigger piece. The bait wood and the supporting column are arranged in parallel and located on one side of the supporting column, a counter bore is formed in the top of the bait wood, the containing cylinder is placed in the counter bore, the height of the containing cylinder is larger than the depth of the counter bore, an inner cavity of the containing cylinder is used for containing a carrier, and the induction triggering piece is placed above the carrier. According to the termite detection device, the change of the height of the carrier caused by the movement of termites can be sensitively sensed, so that false alarm and missing alarm are reduced, the accuracy of termite detection is improved, the difficulty in assembly and positioning is reduced, and the assembly efficiency is improved.
Owner:JIAXING BANGLI TERMITE CONTROL CO LTD

Express cabinet low-power-consumption system

The utility model relates to a low-power-consumption system of an express cabinet, and belongs to the technical field of household appliance control. Comprising a main control module, a power supply module, a low-power-consumption trigger module and a lock control module which are integrated in a cabinet body, the main control module is electrically connected with the power supply module, the low-power-consumption trigger module and the lock control module. The power supply module is used for providing electric energy for the system, the low-power-consumption trigger module comprises a sensor induction sub-module and a switch sub-module, the sensor induction sub-module outputs a hardware trigger signal to the main control module when detecting that a human body approaches, and the switch sub-module outputs a hardware on-off signal according to a cabinet door closing state; the main control module controls the lock control module to open or close the door body of the express cabinet according to the trigger signal. The human body pyroelectric sensor is awakened only when a user approaches, the magnetic reed switch has no standby power consumption, and the power consumption of the trigger module is reduced compared with a traditional scheme.
Owner:SHANDONG HUAYI INTELLIGENT TECHNOLOGY CO LTD

Novel Java card water meter

The utility model relates to a novel Java card water meter, and belongs to the technical field of water meter metering. Comprising a water meter base meter, a main control chip, and a power supply control circuit, a pulse sampling circuit, a valve control circuit, an LCD (Liquid Crystal Display) screen, a card reader circuit, a touch control circuit, an alarm circuit and a GPRS (General Packet Radio Service) wireless communication circuit which are connected with the main control chip, the pulse sampling circuit comprises a reed switch arranged below a counter of the water meter; a permanent magnet is installed below a fixed scale gear fixing column in a gear transmission structure of the counter, and when a gear of the scale rotates by one circle, a pulse sampling circuit will generate metering pulses and send the metering pulses to a main control chip. According to the utility model, the Java card reader-writer module is adopted, and a Java card is matched for use.
Owner:HEBEI SHANGHONG METERS TECH CO LTD

Tamper deterrent attachment for external door locks on vehicles

A tamper deterrent attachment for external door locks like a puck lock on vehicles, comprising a set of plastic accessories with molded wire conductors placed within proximity of the door brackets of a vehicle such as a truck or a van with the wire conductors of the accessories connected to the reed switches next to the door brackets and the wire conductors on the accessories also connected to a wired or wireless alarm within the vehicle. If an attempt is made to pry open the puck lock, cut the lock brackets or cut through the sheet metal around the lock to remove it, the wire conductors molded in the accessories will also be cut to trigger an alarm to notify the owner of the vehicle of the attempted break-in of the vehicle.
Owner:DOBBINS VINCENT A

Offshore wind power underwater operation robot magnetic load rejection device based on ESP32

The invention relates to the technical field of underwater robots, provides an ESP32-based offshore wind power underwater operation robot magnetic load rejection device, and solves the problems of high energy consumption and difficulty in supporting long-time operation when a traditional underwater operation robot dives and passes through surface layer strong disturbance water flow. The robot comprises a control module installed on a robot main body frame; the electromagnet is mounted at the bottom of the robot and comprises a power-losing electromagnet and a power cable, one end of the power cable is connected with the power-losing electromagnet, and the other end of the power cable is connected with the control module; the magnetic key is used for being inserted into a preset position of a shell of the control module, and a strong magnet arranged in the magnetic key can enable the reed switch to be conducted so as to start the control module; the disposable load is used for being adsorbed on the power-losing type electromagnet before operation; according to the invention, the robot can dive by means of gravity by mounting the one-time load, so that the most energy-consuming link in the operation of the underwater robot is omitted, and the operation time is effectively prolonged.
Owner:FUJIAN FUNENG STRAIT POWER GENERATION CO LTD

A valve positioner that can be operated by pressing buttons without opening the cover

The present invention discloses a valve positioner capable of button operation without opening the cover, which includes a button that can operate without opening the cover, a housing, and a permanent magnet; the button that can operate without opening the cover includes a reed switch and a circuit board; the reed switches are evenly distributed around the circuit board. Two reed switches are spaced a certain distance apart, so that when the permanent magnet attracts one of the reed switches, it will not interfere with the adjacent reed switch. After the reed switches are installed, they are attached to the upper cover of the housing to achieve a sensitive response to the permanent magnet. A permanent magnet placement groove is provided on the housing for fixing the permanent magnet when it is not in use. After adopting the valve positioner capable of button operation without opening the cover of the present invention, through the electromagnetic induction effect between the reed switch and the permanent magnet, when the button needs to be operated, the permanent magnet attracts the reed switch through the housing, thereby achieving the button effect, realizing the overall sealing of the valve, and improving the safety and reliability of the valve.
Owner:SHANGHAI AUTOMATION INSTRAION CO LTD +1

An adjustable liquid level signal device

The present invention discloses an adjustable liquid level signaler, comprising a housing assembly, a core assembly, and a float assembly; the housing assembly comprises a core sleeve of a cylindrical structure; the float assembly is sleeved outside the core sleeve and slides axially along the core sleeve; the core assembly comprises an adjusting screw, a reed switch circuit assembly, and a screw fastening structure; the adjusting screw is assembled in the core sleeve, one end of the adjusting screw is threadedly connected to the core sleeve, and the other end fixes the reed switch circuit assembly and forms a sliding connection with the inner wall of the core sleeve; the position of the reed switch is adjusted by adjusting the relative position of the core assembly and the housing assembly; after the adjustment is completed, the core assembly and the housing assembly are fixedly connected by the screw fastening structure. This structure can conveniently realize the continuous adjustment of the reed switch position; and provides multi-point support, thereby improving the vibration resistance of the entire liquid level signaler.
Owner:XIAMEN HONGFA SEALED RELAY CO LTD

Mercury-free wet reed pipe as well as production process and use method thereof

The invention discloses a mercury-free wet reed pipe which comprises a sealing pipe, a first reed and a second reed, one end of the first reed is located in the sealing pipe, and the other end of the first reed is located outside the sealing pipe; one end of the second reed is positioned in the sealing pipe, and the other end is positioned outside the sealing pipe; a first contact is arranged at one end, close to the second reed, of the first reed in the sealing pipe; a second contact is arranged at one end, close to the first reed, of the second reed in the sealing pipe; and a fluorination liquid is injected into the sealing pipe. Fluorinated liquid is injected into the wet reed pipe, the fluorinated liquid can prevent oxidation, clean carbides and prevent arc discharge, meanwhile, the contact can be cooled, and meanwhile the problem of contact adhesion caused by parasitic inductance and capacitance is solved. These advantages just complement the insufficiency of the reed switch. Therefore, the service life of the wet reed pipe is more than 5-10 times that of the dry reed pipe.
Owner:SHENZHEN SAISITE INTELLIGENT EQUIP CO LTD

Split type oil level sensor for compressor and assembling method of split type oil level sensor

The invention relates to the technical field of compressors, and particularly discloses a split type oil level sensor for a compressor and an assembling method thereof.A lower shell cover is packaged at the bottom end of a compressor shell, a mounting hole is formed in the lower shell cover, a first assembly is arranged on the lower shell cover and located in the compressor shell, and the first assembly comprises a guide part and a magnetic floater; the guide part is fixedly installed on the inner wall of the lower shell cover and inserted into the installation hole, a reserved groove hole is formed in the guide part and communicated with the outside of the compressor shell, the second assembly comprises a reed switch and a lead, and the second assembly is used for being inserted into the reserved groove hole from the outside of the compressor shell to form the split type oil level sensor for the compressor with the first assembly. The split type structure is adopted, after the first assembly and the lower shell cover are assembled in a sealed mode, the external second assembly and the first assembly are assembled to form the oil level sensor, the second assembly is separated from the lower shell cover, the influence of high temperature on the sensitive element is effectively avoided, and the durability and reliability of the sensitive element are improved.
Owner:SHANGHAI HITACHI ELECTRICAL APPLIANCES CO LTD

Coil feeding device and reed switch sensor production equipment

The utility model discloses a coil feeding device and reed switch sensor production equipment, and relates to the technical field of automation equipment, the coil feeding device comprises a workbench, an assembly line track, a backstop mechanism and a multi-axis robot, the assembly line track is arranged on the workbench, a feeding position, a material taking position and a recycling position are sequentially formed in the moving direction of the assembly line track, the assembly line track is provided with a material disc, the material disc can move to the recycling position from the feeding position, and the material disc is used for containing coils; according to the technical scheme provided by the utility model, the charging trays containing the coils are stacked at the feeding position in the vertical direction, the lowest charging tray can be driven by the assembly line track to start to move, the stopping mechanism can stop the charging trays to enable the charging trays to stay at the taking position, and after the coils in the charging trays are grabbed by the multi-axis robot, the stopping mechanism falls down, and the coils are taken out of the charging trays. And the material disc moves to the recovery position along with the track, automatic production is achieved in the whole coil feeding process, and manpower consumption is greatly reduced.
Owner:DONGGUAN ZHONGHUI RUIDE ELECTRONICS CO LTD

proximity switch (reed switch)

ActiveCN309595092STesting MethodsReed switch
1. The name of the design product: proximity switch (reed switch type). 2. The use of the design product: It is a non-contact proximity switch, mainly used in the field of industrial automation control, used as a proximity switch. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.
Owner:JIANGSU JUSHI DIGITAL TECH CO LTD

Level sensors for precursor vessels and related systems and related methods

Some embodiments of the present disclosure relate to a system, comprising a vessel; at least one tray located in the vessel; a tube extending into the vessel to a location beneath the at least one tray; and a level sensor comprising: at least one reed switch located on the tube; and at least one toroidal magnet, wherein the tube extends through an opening defined by the at least one toroidal magnet, such that the at least one toroidal magnet is slidably engaged with the tube; wherein, when a solid precursor is loaded onto the at least one tray, the at least one toroidal magnet is configured to rest on a surface of the solid precursor; wherein the level sensor is configured to sense changes in the location of the at least one toroidal magnet relative to the at least one reed switch to sense precursor levels within the vessel. Also described is a vessel for delivering solid precursor vapor where a sensor or heater is connected through a gas exchange port of the vessel.
Owner:ENTEGRIS INC

A gas intelligent detection device for use in a power well

PendingCN122361730AWater levelControl theory
This invention discloses an intelligent gas detection device for use in power wells, belonging to the technical field of detection devices. The proposed solution includes a housing, on which a gas detection sensor and a connecting pipe are mounted. A fixed cylinder with air holes on its sidewall is fixedly connected to the bottom end of the connecting pipe. A rotating cylinder is rotatably connected inside the fixed cylinder. An air groove is provided on the outer wall of the rotating cylinder. A metal intercepting rod assembly is connected inside the rotating cylinder. A driving mechanism is connected to the top of the rotating cylinder via a transmission rod. A float is slidably connected to the outside of the fixed cylinder. A water level monitoring mechanism is connected to the float. A sealing mechanism connects the float and the fixed cylinder. This invention achieves sequential collection of gas at different depths by a single sensor through the cooperation of a single spiral air groove and vertical air holes, reducing hardware costs. The metal intercepting rod assembly is centrifugally self-cleaning. The float, in conjunction with a reed switch, monitors the water level with low power consumption. In extreme water accumulation, buoyancy drives the conical seal and the expansion of the telescopic tube, achieving zero-energy adaptive waterproofing, protecting the sensor, and providing a long maintenance-free cycle.
Owner:JIANGSU DONGGANG ENERGY INVESTMENT CO LTD

Insulation detection circuit device and method

The invention discloses an insulation detection circuit device and method. The insulation detection circuit device comprises a first solid-state relay U1 control circuit, a detection circuit and a high-voltage reed switch relay control circuit. The first solid-state relay control circuit comprises a first solid-state relay U1, and when the MCU module outputs a high level, the first solid-state relay U1 is switched on; the detection circuit comprises a first operational amplifier circuit, a second operational amplifier circuit and an isolation amplifier circuit, and the detection circuit is used for monitoring voltages at two ends of the resistor Rnss to be detected in real time; the high-voltage reed switch relay control circuit comprises a high-voltage reed switch relay, and the output end of the high-voltage reed switch relay can switch voltage; a traditional insulation detection circuit often needs two AD pins to detect the voltage of an upper bridge arm and a lower bridge arm which are switched back and forth, and the circuit does not need to be additionally connected with a known resistor in parallel, occupies few AD pins of an MCU module, and facilitates passing of a high-voltage insulation and withstand voltage test.
Owner:弘正储能(上海)能源科技有限公司

Alarm control device

The utility model discloses an alarm control device which comprises a main circuit a, one end of the main circuit a is communicated with a power supply, the main circuit a is connected with a resistor a, the other end of the main circuit a is communicated with a branch circuit a and a branch circuit b, the branch circuit b is connected with a resistor b, the resistor b is connected with a base electrode of a triode through a wire, the branch circuit a is connected with a photoresistor, and the photoresistor is connected with a reed switch in parallel. The emitting electrodes of the photoresistor and the triode are both connected with a trunk b, the trunk b is connected with a buzzer, and the positive electrode of the buzzer is connected with a relay. When the reed switch triggers a signal, the signal is transmitted to the processing module, the processing module immediately controls the relay to act, the buzzer works to realize alarm, the relay feeds back the signal to the processing module to realize self-locking, and when the reed switch does not detect the signal, the relay still works due to circuit self-locking, and the alarm can be stopped only by turning off a power supply. Therefore, the circuit structure is simplified, and students can conveniently carry out welding operation through the PCB and understand self-locking.
Owner:HANGZHOU HIGH SCHOOL

Refrigerator

According to the present invention, the front-facing side of the inner walls of a storage chamber has a stepped portion formed at the end thereof, to at least partially accommodate a door liner of a door. A reed switch is provided inside a wall surface of the stepped portion, and a magnet is provided inside a wall surface of the door liner, the wall surfaces facing each other in the front-rear direction. Accordingly, a distance between the magnet and the reed switch can be minimized.
Owner:LG ELECTRONICS INC

Photoelectric reed switch intelligent controller

The utility model discloses a photoelectric reed pipe intelligent controller, which comprises a shell, a photoelectric sensor, a reed pipe sensor, an indicating lamp, a detection assembly and an installation assembly, the shell comprises a shell body, the photoelectric sensor is arranged on the inner side of the shell body, the reed pipe sensor is inserted in the top of the shell body, the indicating lamp is arranged on the top of the shell body, and the detection assembly is arranged in the shell body. The detection assembly comprises a socket arranged at the front end of the shell, a handle inserted in the socket and a magnet arranged at the bottom of the handle. The installation assembly comprises an installation base connected to the top of the shell through screws, a clamping block arranged on the right side of the installation base, a top base connected to the left side of the installation base through hinges and an elastic plate arranged on the left side of the top base. According to the utility model, through the arrangement of the installation assembly, under the condition that the use of the photoelectric reed switch intelligent controller is not influenced, the fixing effect is greatly improved, the problem that the reed switch sensor breaks down due to vibration is avoided, and through the arrangement of the detection assembly, whether the reed switch sensor breaks down or not can be conveniently detected.
Owner:KUNSHAN REESENSOR CO LTD