CPC Definition - Subclass G01P
This place covers:
Means to measure linear or angular rate of change of position of solid bodies or fluid mediums (speed, velocity).
Means to measure rate of change of linear or angular speed or velocity (acceleration, deceleration, shock) of solid bodies or fluid mediums.
Means to indicate or record movement of solid bodies or fluid mediums (presence, absence or direction).
Means to test or calibrate apparatus or devices covered by this subclass.
This place does not cover:
Combined measuring devices measuring two or more variables of movement, e.g. distance, speed, acceleration | |
Measuring volume flow or mass flow | |
Measuring the velocity of ultrasonic, sonic (sound) or infrasonic waves | |
Measuring velocity of light | |
Measuring speed of nuclear or X-radiation |
Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:
Measuring or recording blood flow | |
Monitoring speed or acceleration of electrically-propelled vehicles | |
Vehicle optical or lighting devices adapted to indicate speed | |
Control, warning or like safety means along the route or between vehicles or vehicle trains | |
For determining direction or velocity of solid objects by reflection or reradiation of radio or other waves and based on propagation effects, e.g. Doppler effect, propagation time, direction of propagation | |
Measuring acceleration of gravity |
Attention is drawn to the following places, which may be of interest for search:
Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles | |
Determining position or course in navigation, measuring ground distance in geodesy or surveying | |
Gyroscopes or turn-sensitive devices per se | |
Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable | |
Measuring torque | |
Testing structures or apparatus not otherwise provided for | |
Measuring frequency or phase | |
Instruments for indicating weather conditions by measuring two or more variables, e.g., humidity, pressure, temperature, cloud cover, wind speed | |
Measuring short time intervals | |
Systems for control of linear speed, angular speed, acceleration or deceleration, e.g. governors | |
Devices for counting moving objects in general | |
Registering or indicating the working conditions of vehicles | |
Traffic control |
This place covers:
Aspects of housings, e.g. related to providing particular operational conditions for the sensors, or indicating devices or recording devices
This place covers:
Support / mountings of sensors;
Sensor housings; e.g. protection against environmental influences;
Housings: also sensor encapsulations, overmoulding, potting.
Attention is drawn to the following places, which may be of interest for search:
Component parts of measuring arrangements not specially adapted for a specific variable |
Means for mounting the sensor in a defined position or orientation should additionally classified in G01P 1/00
Attention is drawn to the following places, which may be of interest for search:
For wafer-level encapsulation Indexing Code G01P 2015/088 should be used.
This place covers:
(Mechanical) transmission elements between rotating object (the speed of which is determined) and
The speed indicator; e.g. flexible tachometer shaft or gearings therefor.
Attention is drawn to the following places, which may be of interest for search:
Indicating working conditions of vehicles |
This place does not cover:
Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft | |
Measuring speed by integrating acceleration | |
Measuring average value of speed | |
Direction and speed indication | |
Inertial angular velocity / angular rate sensors using gyroscopic effects |
Attention is drawn to the following places, which may be of interest for search:
Devices for counting moving objects in general |
This place covers:
(E.g. detection of cyclical modulation of fluid flow or pressure)
This place covers:
Detection of deflection of fluid streams caused by gyroscopic effects.
This place covers:
E.g. spacial filtering; speckle velocimetry;
This place does not cover:
Determination of time taken to traverse a fixed distance using optical means, i.e. using infrared, visible, or ultraviolet light |
Attention is drawn to the following places, which may be of interest for search:
Evaluation of sequences of (video-) camera images and of image processing | |
Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams | |
Velocity measurements using electromagnetic waves per se | |
Determination of speed relative to a surface by using image analysis see also |
When classifying in this group, classification should also be considered in G01S 17/00, in particular G01S 17/58
This place covers:
Optical velocity measurement exploiting the Doppler effect; e.g. LDA,LDV; determining velocity over rough surfaces.
This place does not cover:
Measuring speed of fluids |
Attention is drawn to the following places, which may be of interest for search:
General aspects, i.e. not related to rough surfaces, of optical Doppler measurements of velocity of solid objects | |
Optical mice |
This place does not cover:
Attention is drawn to the following places, which may be of interest for search:
Speed sensors in internal combustion engines | |
Speed sensors in electric motors; | |
Speed sensors in commutatorless electric motors |
This place covers:
The pick-up, and/or the encoder being integrated in a bearing unit or being designed in a particular manner for the purpose of being integrated in the bearing unit;
The detector elements being directly mounted to the bearing rings or to seal arrangements of the bearing.
Attention is drawn to the following places, which may be of interest for search:
Sensors being integrated in bearing seals |
This place covers:
The detection of physical parameters for deriving frequency information, e.g. microwave pick-ups or acoustic pick-ups.
Attention is drawn to the following places, which may be of interest for search:
Detection of fluid flow or pressure pulses see | |
Arrangements for measuring frequencies in general |
This place covers:
Using analogue circuits.
This place does not cover:
Digital circuits for measuring speed from pulse signals |
This place covers:
Conditioning of raw sensor signals in order to provide standardized signals (e.g. square pulses or sinusoidal signals) from which frequency, timing, phase information or directional information may be extracted.
Attention is drawn to the following places, which may be of interest for search:
Extraction of speed information only by analogue means to be classified in | |
Extraction of speed information from these standardized pulse signals by digital means to be classified in | |
Extraction of information relating to the direction of movement to be classified in |
This place covers:
Detectors making use of encoders having optical properties.
This place covers:
Rotating permanent magnets or encoders comprising sections of permanent magnets (hard magnetic material).
This place covers:
Encoders made of ferromagnetic (soft magnetic) materials;
Encoders made of electrically conductive materials in which induced eddy currents are generating the magnetic fields to be detected;
Attention is drawn to the following places, which may be of interest for search:
Encoders of electrically conductive materials where electrostatic fields are detected | |
Rotating magnet encoders | |
Eddy current in general |
Attention is drawn to the following places, which may be of interest for search:
Analogue circuits in |
This place covers:
Using eddy currents which are generated in continuous electrically conductive means.
Attention is drawn to the following places, which may be of interest for search:
Determination of acceleration using eddy current effects |
Magnetic detection of pulse signals originating from eddy currents being generated in encoders made of electrically conductive material (e.g. aluminum tooth wheel) are additionally classified in G01P 3/488.
Attention is drawn to the following places, which may be of interest for search:
Vehicle speed measurement in traffic control systems |
This place covers:
Measuring of speed or velocity of fluids (liquids of gases) in an open space (e.g. wind velocity, velocity of air in a building).
G01P 5/24 and G01P 5/26 relate to the determination of velocity of fluids by using optical or acoustical waves, e.g. Doppler effect, propagation time, irrespective of the relevance of propagation effects.
G01S relates to the determination of velocity of fluids by using optical or acoustical waves, e.g. Doppler effect, propagation time, when propagation effects are relevant and therefore should also be considered for classification and search.
This place does not cover:
Application of fluid speed measurement where the purpose is to determine volume flow or mass flow through tubes |
This place covers:
E.g. Flow field visualisation by tracers..
This place covers:
Characterisation of the collective movement of the particles of a volume section of the fluid stream
This place does not cover:
Determination of the speed of individual particles in the fluid stream |
When classifying in this group, classification should also be considered in G01S 15/00
This place covers:
E.g. particle image velocimetry [PIV], speckle velocimetry, optical Doppler velocimetry..
When classifying in this group, classification should also be considered in G01S 17/00, in particular G01S 17/58, G01S 17/95
In this place, the following terms or expressions are used with the meaning indicated:
PIV | particle image velocimetry |
This place covers:
Measuring speed by integrating acceleration.
Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:
Electric or electronic controls for exercising apparatus of preceding groups | |
Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks | |
Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters | |
Measuring travelled distance by double integration of acceleration | |
Programme-control systems |
This place covers:
Only detection of presence or absence of movement
Attention is drawn to the following places, which may be of interest for search:
Counting moving objects | |
Burglar, theft or intruder alarms with electrical actuation | |
Electric switches |
This place covers:
Direction in two or more dimensions.
Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:
Damage indicators on helmets | |
In footwear | |
Medical diagnostics | |
Sensors for sports or training purposes | |
Vehicle collision indicators | |
Inclination detection | |
Pedometers | |
Data input devices |
This place covers:
General aspects of shock detection, impact detection.
Particular acceleration-related shock detection principles should also be classified in their relevant subgroups of G01P 15/03 or G01P 15/08.
This place covers:
Non-inertial sensors.
This place does not cover:
Measuring acceleration by measuring acceleration changes by making use of a triple differentiation of a displacement signal | |
Measuring acceleration by evaluating the time-derivative of a measured speed signal |
This place covers:
E.g. using thermal pick-up being responsive to acceleration induced change of convection of air streams.
This place covers:
Detection of deflection of a fluid jet;
detection of fluid flow being influenced by acceleration induced movement of a solid mass.
This place does not cover:
Inertial sensors having fluid seismic masses |
This place covers:
Mechanical shock indicators, e.g. breakable liquid filled vials, breakable or permanently deformable beams or membranes.
Further aspects of sensor devices covered by G01P 15/08 but not provided for in any of its subgroups and not being related to the physical detection principle of displacement of seismic masses per se are mandatorily classified under the indexing scheme of G01P 15/08.
This place covers:
Exclusively concerning details of the manufacture process (e.g. patterning of movable electrodes) or purely manufacture related structural elements of accelerometers (e.g. layered structure of a flexural beam).
This place covers:
Also including optical fibre accelerometers.
Attention is drawn to the following places, which may be of interest for search:
Optical vibration detection | |
Geophysical vibration detection |
This place covers:
Only those vibratory elements, which provide acceleration detection based on determination of acceleration dependent resonance frequency.
This place covers:
E.g. Hall pick-ups, magnetoresistive pick-ups..
This place covers:
Including acceleration responsive FETs.
This place covers:
Structural aspects of sensor capacitors; circuits for capacitive pick-up.
Attention is drawn to the following places, which may be of interest for search:
Capacitive displacement sensors | |
Measurement of capacitance per se | |
Switched capacitor networks per se | |
Capacitive proximity switches |
This place covers:
Single contacts for acceleration threshold measurement or wiper contacts for measurement over continuous acceleration ranges.
Attention is drawn to the following places, which may be of interest for search:
Acceleration responsive switches per se |
This place covers:
Testing or calibrating while sensor being mounted on calibration table or test bench or selftest or selfcalibration during use of the sensor.