1070 results about "Reed switch" patented technology

Systems and methods for processing, transmitting, and displaying data received from a continuous analyte (e.g., glucose) sensor are provided. A sensor system can comprise a sensor electronics module that includes power saving features, e.g., a low power measurement circuit that can be switched between a measurement mode and a low power mode, wherein charging circuitry continues to apply power to electrodes of a sensor during the low power mode. The sensor electronics module can be switched between a low power storage mode and a higher power operational mode via a switch, e.g., a reed switch or optical switch. A validation routine can be implemented to ensure an interrupt signal sent from the switch is valid. The sensor can be physically connected to the sensor electronics module in direct wireless communication with a plurality of different display devices.

An automatic skin puncturing system that was operable with one hand for allowing individuals with the use of only a single hand to take the blood samples needed to monitor their blood glucose levels. The automatic skin puncturing system includes a housing assembly, a power connecting jack, a battery holder, an indexable, motor driven turntable, an index switch, a reed switch, a lancet lifting assembly, a disposable lancet carousel cartridge, and an electronic, micro-processor controlled circuit.

A pool alarm system including a programmable control circuit, a control keypad, a number of planar focused infrared motion detectors, a key alarm system activation switch, an audible alarm output system, a drain blockage sensor, and a pool pump motor control relay. The drain blockage sensor is installed in place of the existing drain cover and includes a perforated dome shaped cover member slidably mounted to a compression detector including a spring biased plunger slidably mounted within a plunger cylinder. The spring biased plunger has a permanent magnet secured to a plunger bottom surface thereof. The plunger cylinder has a magnetically actuated reed switch in electrical connection with a drain stoppage input of the programmable control circuit and positioned on a bottom cylinder surface thereof. Each of the number of planar focused infrared motion detectors has an infrared sensing area having a planar bottom to allow for sensing motion at or a near a pool water surface.

A method and apparatus for accurately controlling the directional and turning movement of a self-propelled robotic pool cleaner having at least one pair of rotational support members for propelling and cleaning along a surface of a pool or tank include accelerating at least one pair of the rotational support members from a stopped position to a first predetermined rotational rate for a first predetermined time period to propel the pool cleaner in a first direction along the pool surface, continuing the rotation at the first rotational rate for a second predetermined time period; and increasing to a second higher rotational rate, such that the cleaner is propelled at a maximum normalized rate during straight-line movement for cleaning the pool. The duration of straight-line movement is incrementally advanced by a signal that is manually generated by a user switch or a magnet that is brought into proximity of a reed switch mounted inside the cleaner's housing.

A combination fastener and separate, manually operable lighting device includes a pair of complimentary fastener members for releasably securing portions of a portable carrying case, such as a lady's handbag, in a closed position when mating surfaces of the complementary members are placed in contact with each other. The lighting device includes a light emitting diode (LED), battery and switch, and an optional programmed microprocessor controller, that is removably secured to a first member of the pair of fastener members. The lighting device is deactivated when the mating surfaces are placed proximate to each other and is activated to illuminate an interior of the accessory when the surfaces are separated. The lighting device utilizes a reed switch which responds to a proximate magnetic force and the complimentary member includes a magnet so that the powers to the LED is turned off when the mating surfaces are brought into contact with each other.

A cooler that utilizes multiple LEDs to illuminate an entire interior is disclosed herein. The LEDs are activated by a magnetic reed switch positioned between an inside liner and an outer liner of the cooler. A magnet is positioned in a lid. Removal of the magnetic field of the magnet when the lid is in an open state allows the magnetic reed switch to complete a circuit from a battery to the LEDs thereby allowing the LEDs to illuminate the entire interior chamber of the cooler.

A tamper resistant magnetic contact switch apparatus for alarm systems that has a plurality of magnetic reed switches configured in a logic circuit and a magnetic pack for actuation. A magnetic shield disposed around the switches defines an actuation zone. In combination with the magnetic shield preventing magnetic fields from reaching the switches from locations outside the actuation zone, the magnet pack activates two of the five switches when positioned within the actuation zone to complete the logic circuit. The magnet pack does not, however, activate any of the other switches. If any of the other three switches are activated, or if either of the two activated switches are deactivated, the logic circuit is broken and the alarm circuit is activated.

A text input device having a keyboard with magnet-actuated switches or magnetoelectric sensors, and a stylus with a magnet at the tip. Each key of the keyboard has a reed switch. A key is selected by moving the stylus magnet near to the selected key and switch. The magnet actuated switch closes due to the magnetic field, and the low resistance state of the switch is detected by a microprocessor. The switches can be connected in a matrix array. In an alternative embodiment, the switches are replaced with magnetoelectric sensors having mechanically coupled magnetostrictive and piezoelectric materials. The present keyboard is small and low power, and is well suited for use in portable electronic devices. The keyboard does not require pressing of the stylus against the keyboard, which facilitates fast typing and reduces user fatigue.

An indwelling apparatus (5) for holding a capsule endoscope (3) is arranged with a control device (57) including an optical sensor (73), a control board (66) configuring a controller and a reset circuit, a driver board (68) configuring an electromagnet driver, and an electromagnet (70), where when the optical sensor (73) detects the light, the controller performs the drive control of the electromagnet (70) at every constant time interval to turn ON the reed switch (14) and supply power to the capsule endoscope (3) thereby operating the capsule endoscope (3) only when observation is necessary, and thus the battery drain of the capsule endoscope is reduced.

A flashlight has front and rear interconnected housing portions which define an interior waterproof chamber. The waterproof chamber carries an illumination source, an electronic drive for the illumination source and a power source. A switch system includes an electronic switch component for switching the relatively high current required for the electronic drive while a mechanical switch (e.g. a magnetic reed switch) activates the electronic switch component, therefore maintaining integrity of the waterproof seal about the chamber. A commutator assembly is provided to maintain electrical contact between the switch and other components. The power supply may be in the form of a plurality of battery stacks batteries aligned in the housing in a manner to provide a compact unit, while electrical components may be mounted to circuit boards positioned transversely to the length of the flashlight.

The signal from a meter register of a water meter having a distance range is transmitted to a receiver mounted adjacent the meter register and acted on to provide a second signal that has a predetermined distance range greater than the predetermined distance of the received signal. The second signal is transmitted to a meter reader. Reed switches are mounted alongside a meter register of a water meter and acted on by magnetic end of a rotating arm of the register. A microprocessor receives signals from the reed switches and determines water flow direction and units of flowed water. The information is transmitted to a meter reader. Components of a transmitter/receiver are mounted in a housing and the housing partially filled with silicone gel and polyurethane. The transmitter/receiver can be used in dry, damp, and wet environments.

A power strip device includes a power plug, a master power outlet, multiple slave power outlets and a control circuit. The control circuit includes an inductor, a reed switch and a switching circuit. Under the control of the control circuit, the power strip device allows the slave power outlets to be automatically turned on or off simultaneous with the master power outlet being turned on or off.

The invention discloses a reed switch induction soft wood floater water shortage detecting mechanism with a medicine bag. The mechanism comprises a sleeve, a floater, a plurality of limiting grids, a limiting column, a limiting groove, a permanent magnet sheet, a reed switch, a detecting alarm circuit, a medicine bin cover, a through hole and the medicine bag, The upper limiting grid and the lower limiting grid are arranged in the sleeve. The floater is arranged in the sleeve and between the two limiting grids. The limiting column is arranged at the front end of the floater. The limiting groove matched with the limiting column is formed in the inner wall of the sleeve. The permanent magnet sheet is embedded in the rear end of the floater. The reed switch corresponding to the permanent magnet sheet is embedded in the wall of the sleeve. The reed switch is connected with the detecting alarm circuit. A detachably-connected medicine bin is arranged at the upper end of the sleeve. The medicine bin cover, the upper limiting grid and the sleeve are matched with one another to form the medicine bin. The medicine bag is arranged in the medicine bin and filled with traditional Chinese medicines of a health care formula. Compared with the prior art, the mechanism has the advantages of being high in applicability, easy to operate and low in cost, being made from natural materials, and having certain antibacterial and health-care effects.

Disclosed is a clothes dryer, comprising: a body; a drum rotatably installed at the body; a duct for guiding air exhausted from the drum; and a filter assembly for filtering lint included in the air exhausted from the drum. The filter assembly includes a lint filter and a cover filter, and a lint collector encompassed by the lint filter and the cover filter. The clothes dryer includes sensing means for sensing whether the lint filter has been mounted to a precise position or not. The sensing means consists of a magnet mounted to a mesh frame of the lint filter, and a reed switch mounted to a cover guide.

The cotton candy machine includes a base and a bowl attached thereto. A spinner is included for rotating sugar as well as a heating assembly for heating sugar which falls on a plate of the spinner. A cap is also provided and is attached to the spinner. The cotton candy machine is also equipped with various safety devices. For example, an interlock safety switch is used to indicate whether the bowl has been removed from the cotton candy machine while the cotton candy machine is in operation. A reed switch/magnet arrangement is utilized to detect whether the cap has been removed from the cotton candy machine. Sensors are provided to detect mechanical malfunctions. Thermostats are also employed to monitor and to sense an overheat condition in the cotton candy machine.

The invention relates to a remote state monitoring system of a fire hydrant. The remote state monitoring system comprises a site detection device arranged on the fire hydrant, and a monitoring center positioned at a remote end, wherein the site detection device comprises a water pressure sensor, a flow sensor, a tilt angle sensor, a prying-resistant sensor, a geographic information positioning module, an identity recognition module, a buzzer, a microcontrol chip circuit and a wireless transmission module, wherein the water pressure sensor is positioned at the front end of a water stop pad and is connected with the microcontrol chip circuit, the prying-resistant sensor comprises a reed switch and a permanent magnet arranged on a fire hydrant valve rod for being matched with the reed switch to work, the reed switch outputs a signal after acting and the signal is output to the microcontrol chip circuit, and the microcontrol chip circuit transmits the acquired data to the monitoring center through a star topology structure of the wireless transmission module of the fire hydrant in a region and in a self-networking or relaying manner and then through a wireless network. The remote state monitoring system is capable of remotely monitoring the state of the fire hydrant, preventing the fire hydrant from being illegally used, displaced and damaged, and providing relevant information of the fire hydrant to maintenance or fire emergency of the personnel patrol.

A door latch position detection system incorporating light switching capability and a backup timer includes a relay that is used to switch on the storage unit lighting powered by line voltage. The system includes an AC to DC converter that converts and filters the line voltage to low voltage DC power. The low voltage is fed to a reed switch within a switch housing attached to the overhead door track. When the reed switch that controls the storage unit lighting is closed by withdrawal of the bolt from the track aperture, a low voltage power signal is sent through a normally-on switch to the coil of the relay, thereby closing the relay contacts and turning on the storage unit lights. A timer shuts off the current to the relay after a set period. The present invention may also be utilized in a garage or closet to conserve energy.

A liquid level sensor employs a set of axially displaced magnetic sensing switches and a magnet on a float that may rise and fall on liquid level to activate and deactivate the switches. The switches and magnet are configured so that movement of the magnetic float activates a new switch before deactivation of an adjacent previously activated switch. An electronic circuit provides a signal based on the uppermost activated switch to provide a signal that is monotonic with liquid level. The design may be readily implemented using reed switches and a resistive ladder.

In accordance with one embodiment, a pick-up tool includes an elongated hollow body having first and second pick-up fingers extending divergently outward from a distal end of the body. Engagement elements, such as rubber cups, may be individually located at terminating outer ends of each of the first and second pick-up fingers. The pick-up tool further includes first and second linkages respectively extending from the first and second pick-up fingers. A lighting element is coupled to the body, a magnet is coupled to the first linkage, and a switch, preferably a reed switch is coupled to the distal end of the body. The switch causes the lighting element to emit light for a predetermined period of time upon detecting the magnet at an effectively close distance relative to the switch. A lever or trigger pivotally coupled to the body may be used for drawing the first and second linkages rearward, causing the engagement elements to move closer together, and substantially simultaneously causing the magnet to effectively actuate the switch.