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7593795 |
Method and system for compensating for wheel wear on a train
A method and system for compensating for wheel wear uses position and/or speed information from an independent positioning system to measure some distance over which the train has traveled. Wheel...
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7577767 |
Data storage system having plural storage processors in a single chassis
An interface for coupling data between a host computer/server and a bank of disk drives. The interface includes a chassis having disposed therein: a pair of storage processors adapted for coupling...
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7511474 |
DC motor phase detection method for determining a distance traveled by a load
A DC motor phase detection algorithm that monitors the change in motor current to detect pulses in the current caused by the motor's commutator brushes crossing over the gap between rotor...
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7496154 |
Power and area efficient receiver circuit having constant hysteresis for noise rejection
A hysteresis receiver containing two inverters and a logic controller. The inverters are implemented with threshold voltages equaling Vil and Vih, which together define the hysteresis window. The...
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7441322 |
Method of manufacturing a magnetic detection apparatus
A magnetic detection apparatus can be improved in its product yield. The magnetic detection apparatus includes a resin compact having a the magnet arranged in opposition to an object to be detected...
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7385387 |
Signal processing circuit of rotation detecting device
A rotation detecting device includes a rotation detecting unit for providing first and second rotation signals in response to rotation of a rotating object and a signal processing circuit for...
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7352171 |
Paddlewheel speed correction
A speed sensor for a marine vessel includes a correction circuit to correct any sensor non-linearities so that the sensor produces an output with a pulse stream having a constant pulse rate, and...
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7348770 |
Electronic device for interrupt signal control to acquire encoder speed information and a method thereof
An electronic device for acquiring encoder speed information and a method for implementing the same are provided, wherein the electronic device includes an encoder for electrically outputting an...
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7345468 |
Detection signal processing circuit and detection signal processing apparatus for a rotation sensor
Detecting the rotational direction of a rotor is feasible by allowing a constant current source to supply a constant current flowing from an electric potential supply line to the earth in response...
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7343261 |
Underwater sensor transmitter probe
An electronic apparatus for measuring water speed and water temperature then periodically transmitting said data during controlled depth fishing wherein an underwater probe is secured to and...
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7324887 |
Eddy current detection of wheel speed with voltage threshold shifting
A wheel speed detection system including a rotator, a sensor head, a detector, a pulse converter, a speed calculator and a threshold shifter. Plural concave and convex portions are formed on a...
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7320166 |
Speed sensor encoder wheel and method of making
A method of making an encoder for use in a speed sensor includes providing a metal tube. A material containing ferrite is then extruded over the metal tube to produce an encoder tube. The encoder...
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7304470 |
Fan operating status monitoring system
A fan operating status monitoring system includes a detecting module to detect pulsation currents generated by the rotation of a fan, and further convert the detected pulsation currents to voltage...
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7298285 |
Rotary downlink system
A method for downlink communication with a downhole tool having a mud-powered downhole motor that includes receiving a sensor signal related to a rotational speed of a rotor in the mud-powered...
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7295000 |
Method for detecting disturbances when determining the rotational speed of a rotor and evaluation circuit
The invention relates to a rotary encoder and to a method for detecting disturbances in such a rotary encoder. In this case, vibrations or other disturbances are detected by means of the phase...
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7283897 |
Method and system for compensating for wheel wear on a train
A method and system for compensating for wheel wear uses position and/or speed information from an independent positioning system to measure some distance over which the train has traveled. Wheel...
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7275013 |
Plasma anemometer and method for using same
Methods and systems are described for a system for obtaining information regarding a flow. These methods and systems comprise a signal generator configured to generate an alternating current signal...
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7274188 |
Pulser ring mounting structure including an annular groove formed on a side surface of a brake disk to which the pulser ring is mounted
In a motorcycle, to prevent an increase in the diameter of a hub in association with the mounting of a pulser ring and for increasing the flexibility when arranging a wheel speed sensor. An annular...
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7265538 |
Method and device for measuring the rotational speed of a pulse-activated electric motor based on a frequency of current ripples
A method and a device for measuring the speed of a pulse-activated electric motor are described. According to this method, the motor is fully activated at time intervals to be determined for a...
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7262591 |
Technique for sensing the rotational speed and angular position of a rotating wheel
A method of processing a pulse train output signal provided by a non-contact sensor that senses the rotational speed and angular position of a rotating wheel includes comparing the amplitudes of...
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7245123 |
Rolling element bearing unit with sensor and hub unit with sensor
A sensor-equipped hub unit comprises a hub unit 1 having a wheel-side raceway member 4 , a body-side raceway member 5 , and two rows of rolling bodies 6 , and a sensor device 2 provided on...
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7215111 |
Magnetic motion sensor
A magnetic motion sensor has: two magnetic sensors aligned in a direction along which changes in a magnetic field shift for detecting an appearance of the changes; a differential means for taking...
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7175490 |
Boat indicator
A boat indicator enables a user to easily read engine speeds for boats which can switch between a low-speed trolling mode and a normal running mode at speeds higher than the trolling mode speed....
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7145324 |
System and method for driving a tachometer
An electronic driver and method for producing an output waveform for use by a tachometer comprises an input line that is connected in series with at least one ignition coil. The at least one...
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7119532 |
Systems and methods for detecting of abnormality in magnetic rotors
A magnetic rotation detector includes a magnetic rotor having magnetic bodies, a detecting body that detects a change in magnetic flux that is caused by the magnetic bodies as the magnetic rotor...
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7117585 |
Magnetic detection apparatus with resin infiltration prevention
A magnetic detection apparatus can be improved in its product yield. The magnetic detection apparatus includes a resin compact having a the magnet arranged in opposition to an object to be detected...
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7075290 |
Tachometer apparatus and method for motor velocity measurement
A method and apparatus for determining the velocity of a rotating device is described herein. The apparatus includes a magnet assembly affixed to a rotating shaft of a rotating device and a circuit...
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7070203 |
Airbag deployment rate sensor with electrostatic dissipative guide slots
An airbag deployment rate sensor has a printed circuit board with a substrate that has guide slots for the withdrawal of deployable tapes. Each tape is fastened to the interior of the airbag. When...
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7068734 |
Passive redundant digital data receiver with schmitt-trigger
A passive coupling structure constructed using printed circuit board traces is used to separate the low and high frequency components of an incoming digital signal. The low and high frequency...
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7057629 |
Control apparatus
An object of this invention is to obtain a control apparatus capable of easily and speedily setting an output frequency, and it is constructed so as to change a change width of a frequency setting...
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7034522 |
Method and apparatus for measuring movement, displacement and/or deformation
A non-contact rotation speed and torque sensing device which uses the natural inhomogeneities in the magnetic properties of a rotating element ( 4 ) to measure movement, displacement and...
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6969986 |
Method for determining a rotation speed and a rotation direction of a component
A method is described for determining a rotation speed and a rotation direction of a component ( 2 ), in particular a transmission output shaft, with a sensor device ( 1 ). In the sensor device ( 1...
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6961667 |
Adaptive tachometer redline
A tachometer system is provided for a motor vehicle having an engine selected from a plurality of engines having unique maximum rated engine RPMs. The system has an RPM data signal and scale...
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6957926 |
Magnet mounting structure
A magnet mounting structure for fastening a magnet to a spoke of a two-wheeled vehicle even without tool includes a knob member having a screw and the magnet and an internal thread member in which...
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6909277 |
Amplification circuit for increasing variable reluctance sensor output
An apparatus and method for measuring a characteristic, such as speed, of a machine. A variable reluctance sensor (VRS) is coupled to a resistive element, which filters a portion of a basic output...
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6888345 |
Method and arrangement for correction of evaluation of a switching threshold of a magnetic sensor
The method for correction of evaluation of a switching threshold of a magnetic sensor arrangement includes evaluating switching edges of a transmitter signal produced by a moving transmitter...
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6885188 |
Detector assemblies and methods
The rotational position of a shaft ( 10 ) with respect to a sleeve ( 12 ) is determined by using a sensor ( 14 ) rotating with the shaft ( 10 ) to detect an earth vector such as magnetic or...
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6870363 |
Speed sensor target wheel with improved retention capability
An improved target wheel is provided for a bearing speed sensor. The target wheel includes an annular base which is sized to be press fit on a seat or extension of the inner race of a bearing. The...
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6859030 |
Method for determining the rotational position of the drive shaft of a direct current motor
A method for determining the position of an element driven along a travel segment by a shaft of a motor includes counting current ripples detected in an armature current signal of the motor as the...
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6801838 |
Device and method for converting vehicle speed signals
The present invention relates to a device for converting vehicle speed signals characterized in that it includes a controller for converting vehicle speed signals which has a switch for controlling...
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6798192 |
Speed sensing system with automatic sensitivity adjustment
An electronic circuit measures a pulse frequency and/or a pulse period of pulses in a sensor signal originating in a sensor coil, the pulses being zero crossing pulses. The circuit includes a...
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6777925 |
Input circuit for inductive engine speed sensor
A circuit for inputting and processing a signal from a speed sensor element, includes a comparator having first and second input terminals and first and second input circuits connected to receive...
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6771063 |
Methods and systems for improving the duty cycle output of a vehicle speed sensor circuit
A system for improving the duty cycle output of a vehicle speed sensor circuit is disclosed. The vehicle speed sensor circuit can be configured, for example as a binary counter, to provide a...
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6747553 |
Apparatus for detecting rotational state of wheel
Provided is rotational-state-of-wheel detecting apparatus that can avoid output of an incorrect rotational direction during a halt of a wheel. In ECU 10 , a signal input section 10 a accurately...
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6737860 |
System for controlling rotational speed of fan according to reference clock frequency
A system for controlling the rotational speed of a fan, according to a reference clock having a reference frequency, is disclosed. The rotational speed corresponds to a fan rotational speed signal....
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6731224 |
Method and device for preprocessing a received, data coded transmitting signal
A method for conditioning a coded signal including: determining a time constant, on the basis of which the data were coded, from the received signal and evaluating the received signal according to...
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6727689 |
Magnetic-effect sensing apparatus with signal thresholding
An apparatus and method for detecting gear features is provided. The apparatus includes a magnetic-sensing element, a thresholding module, and an output module. The magnetic-sensing element may...
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6714003 |
Frequency compensation for rotating target sensor
A compensation circuit for compensating for switching point errors in rotating target or gear tooth sensors. The compensation circuit may include a processing unit and a persistent storage device,...
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6707385 |
DC motor rotation speed alarm circuitry
DC motor rotation speed alarm circuitry includes an input node, a connection node, a ground node, a comparison circuit and a signal generator. When the rotation speed of the DC motor changes during...
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6693419 |
Proximity detector
A proximity detector includes an offset circuit for bringing at least one of a magnetic field signal and a tracking signal towards the other one of the magnetic field signal and the tracking signal...
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