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3866 results about "Test point" patented technology

A test point is a location within an electronic circuit that is used to either monitor the state of the circuitry or to inject test signals. Test points have two primary uses: During manufacturing they are used to verify that a newly assembled device is working correctly.

Method and Apparatus of Load Detection for a Planar Wireless Power System

Embodiments of the subject invention relate to a method and apparatus for determining information regarding a load in a planar wireless power transfer system by extracting system operating parameters from one or more test points in the transmitter circuit. As shown in FIG. 1, a specific embodiment showing three test points in the transmitter circuit from which operating parameters can be extracted. The transmitter circuit is designed to produce a magnetic field, by driving the transmitter coil, which inductively couples to a receiver coil such that power is provided to a receiver. By extracting operating parameters from the transmitter circuit, the receiver does not need to incorporate sophisticated signal processing and can be manufactured with low cost.
Owner:UNIV OF FLORIDA RES FOUNDATION INC

Passive time domain reflectometer for HFC network

Detecting a linear impairment in a cable under test by using a random signal transmitted down the cable. The impairment causes a reflected signal to be combined with the random signal. The combined signal extends over a plurality of sub-bands. A method and apparatus perform the steps of: (a) receiving the combined signal from a test point upstream from the impairment; (b) tuning to each sub-band and receiving a part of the combined signal within each sub-band; (c) determining an autocorrelation function of each part of the combined signal of each sub-band, to produce a plurality of autocorrelation functions; (d) combining the autocorrelation functions to form a combined function; (e) detecting the reflected signal from the combined function; and (f) determining, from the combined function, a time delay associated with the reflected signal and the distance from the test point to the impairment.
Owner:ARCOM DIGITAL

Apparatus and method for processing bank notes and other documents in an automated banking machine

An apparatus and method for determining a type and / or a condition of a note passing through the apparatus includes a note transport (12) which moves the note past sensing assemblies (18). Each sensing assembly includes emitters (32). Each of the emitters produces radiation at a different wavelength. The sensing assemblies include a reflectance detector (20) and a transmission detector (22) which are disposed on opposed sides of the passing note. The emitters direct radiation onto test spots (34) on the passing note. Reflectance values are generated from radiation reflected from each type of emitter to the reflectance detector. Transmission values are generated from radiation transmitted from an emitter through each test spot to the transmission detector. A control circuit produces a sensed value set including the reflectance and transmission values from each of the emitters in each of the sensing assemblies. The control circuit also determines an angle of skew of the passing note. Memories (138) include templates of values corresponding to transmission and reflectance values for known note types in a number of note positions. The control circuit generates stored value sets from the templates and skew angle. The control circuit further calculates a value representative of a level of correlation between the sensed value set and each of the stored value sets. The control circuit determines the highest level of correlation between all the stored value sets which is indicative of the note type and / or a condition thereof Various types of sensing assemblies can be used including sensing assemblies that are also suitable for capturing image data from notes or instruments processed in an automated banking machine.
Owner:DIEBOLD NIXDORF

Apparatus and method for the testing of circuit boards, and test probe for this apparatus and this method

An apparatus and a method for the testing of circuit boards, together with a test probe for this apparatus and this method, in which the contact tips of a test finger of a finger tester are monitored during the testing process by an optical detection device and their movement, at least when approaching a part of the circuit board test points of a circuit board to be tested, is corrected on the basis of the result determined by the optical detection device in such a way that the contact tip makes reliable contact with the circuit board test point concerned. The correction data hereby obtained may be used in the calculation of calibration data.
Owner:ATG TEST SYST

System and method for evaluating accuracy of an automatic location identification system

A method (38) and system (56) evaluate the accuracy of an Automatic Location Identification (ALI) system (36) deployed within an environment (20) and configured to location a wireless communication device (24) originating an emergency call (22) through a wireless communication network (26). The method (38) includes a subprocesses that identify a validation region (144) in which a service area (106) of a public service answering point (PSAP) (32) and an RF coverage area (129) overlap, classify sub-regions within the validation region (144) according to a predetermined set of test scenarios (148) representing unique calling environments, and select test points (200) within the validation region (144) from which test calls, that simulate emergency calls, will be performed. The method (38) further includes an empirical test call execution subprocess (50) for performing test calls within the validation region (144) and a predictive test call execution subprocess (52) for simulating test calls within a simulated environment (260).
Owner:VERIZON PATENT & LICENSING INC +1

Transmission line input structure test probe

A differential electrical test probe tip for sensing a plurality of electric signals and generating a differential signal including an elongate common substrate having a two signal test points at one end and a differential amplifier at the second end. Two transmission lines are on the common substrate, each connecting a respective signal test point a signal input of the differential amplifier. The characteristic impedances of the two transmission lines are substantially equal. In one preferred embodiment, the common substrate is a flexible substrate. In one preferred embodiment an over-mold, which may have gaps therein, at least partially encloses the common substrate, the first transmission line, and the second transmission line.
Owner:TELEDYNE LECROY

Method and apparatus for debugging, verifying and validating computer software

A new approach for software debugging, verification and validation is disclosed. The present invention utilizes a knowledge-based reasoning approach to build a functional model of the software code for identifying and isolating failures in the software code. The knowledge-based reasoning approach of the present invention uses the software design, which is preferably based upon a flow chart or block diagram representation of the software functionality, to build the functional model. The software block diagram contributes to the functional model by defining the inputs and outputs of the various blocks of code, as well as defining data interconnections between the various blocks of code. In accordance with a method of the present invention, test points are strategically inserted throughout the code, and each test point is associated with a corresponding block of code. Expected values of the test points for an expected proper-operation execution of the computer program are generated. The computer program is then executed on a computer, and the actual values of the test points from the program execution are compared with the expected values of the test points. Failed test points which do not agree with corresponding expected values are determined. The functional model, which includes information functionally relating the various test points to one another, is then used to isolate the failed test points to one or more sources of failure in the code.
Owner:MCDONNELL DOUGLAS

Method for testing signal paths between an integrated circuit wafer and a wafer tester

Signal paths within an interconnect structure linking input / output (I / O) ports of an integrated circuit (IC) tester and test points of an IC die on a wafer are tested for continuity, shorts and resistance by using the interconnect structure to access a similar arrangement of test points on a reference wafer. Conductors in the reference wafer interconnect groups of test points. The tester may then test the continuity of signal paths through the interconnect structure by sending test signals between pairs of its ports through those signal paths and the interconnecting conductors within the reference wafer. A parametric test unit within the tester can also determine impedances of the signal paths through the interconnect structure by comparing magnitudes of voltage drops across pairs of its I / O ports to magnitudes of currents it transmits between the I / O port pairs.
Owner:FORMFACTOR INC

Hybrid algorithm for test point selection for scan-based BIST

A test point selection method for scan-based built-in self-test (BIST). The method calculates a hybrid cost reduction (HCR) value as an estimated value of the corresponding actual cost reduction for all nodes in a circuit under test. A test point is then selected having a largest HCR. This iterative process continues until the fault coverage of the circuit under test reaches a desired value or the number of test points selected is equal to a maximum number of test points. In an alternative embodiment, the cost reduction factor is calculated for all nodes in the circuit under test, the HCR is calculated for only a selected set of candidates, and the candidate having the largest HCR is selected as the test point. The test point selection method achieves higher fault coverage results and reduces computational processing relative to conventional selection methods.
Owner:LUCENT TECH INC +1

Method and system for assessing fall risk

A method and system for determining the fall risk of a patient is provided. The method includes the evaluation of a patient to determine whether the patient exhibits one or more intrinsic fall risk factors selected from a group consisting of confusion, depression, altered elimination, dizziness, male gender, antiepileptic / anticonvulsant prescriptions and benzodiazepine prescriptions. A specific point value is assigned to each of the intrinsic risk factors found to be exhibited by the patient. A mobility test is also performed on the patient to evaluate the patient's ability to rise from a seated position, and a specific mobility test point value is assigned to the patient based upon the patient's performance of the mobility test. Each intrinsic risk factor's specific point value is then summed together with the specific mobility test point value to achieve a total risk score, and the patient's fall risk is determined based on the total risk score. An intervention process may be developed for the patient based on the patient's fall risk.
Owner:AHI OF INDIANA

Method and system for assessing fall risk

A method and system for determining the fall risk of a patient is provided. The method includes the evaluation of a patient to determine whether the patient exhibits one or more intrinsic fall risk factors selected from a group consisting of confusion, depression, altered elimination, dizziness, male gender, antiepileptic / anticonvulsant prescriptions and benzodiazepine prescriptions. A specific point value is assigned to each of the intrinsic risk factors found to be exhibited by the patient. A mobility test is also performed on the patient to evaluate the patient's ability to rise from a seated position, and a specific mobility test point value is assigned to the patient based upon the patient's performance of the mobility test. Each intrinsic risk factor's specific point value is then summed together with the specific mobility test point value to achieve a total risk score, and the patient's fall risk is determined based on the total risk score. An intervention process may be developed for the patient based on the patient's fall risk.
Owner:AHI OF INDIANA

WLAN (Wireless Local Area Network) indoor positioning method based on subregion information entropy gain

The invention proposes a WLAN (Wireless Local Area Network) indoor positioning method based on subregion information entropy gain, relating to a WLAN indoor positioning method; and the WLAN indoor positioning method based on the subregion information entropy gain can be used for reducing the amount of computation required for positioning and improving the accuracy of the WLAN indoor positioning simultaneously. According to the method, at an offline stage, firstly RSS (Received Signal Strength) values are measured and received from all APs (Access Points) at all reference points and used as position fingerprint information, then a positioning space is partitioned by using a K-mean clustering algorithm, and t APs with the strongest positioning capabilities are selected in a manner that an information entropy gain model is introduced into each subregion; and at an online stage, firstly the subregion where a test point is located is determined according to the size of distances between the test point and eigenvectors of all clustering centers, and then the accurate positioning of the test point is realized by applying a K-nearest neighbor positioning algorithm in a manner that the selected t APs are respectively utilized in the subregions. The WLAN indoor positioning method based on the subregion information entropy gain is applicable to the WLAN indoor positioning.
Owner:HARBIN INST OF TECH

Device and method for automatic test and fault diagnosis of plane audio integrated system

The invention relates to a device and method for automatic test and fault diagnosis of a plane audio integrated system, which are used for maintaining the plane audio integrated system of Airbus series and Boeing series. The method comprises the steps of: operating test software by an industrial personal computer to provide a man-machine interaction environment, and carrying out analysis, computation and statistic treatment on acquired data so as to further complete fault diagnosis; compiling a fault diagnosis program according to all circuit diagrams and test point information of the audio integrated system, provided by a CMM (Capability Maturity Model for Software) manual, and clearing up injected data information on faults, excitation, response and the like to form a fault record in a fault dictionary; in the fault diagnosis program, providing the positions of testing points in need of manual measurement and corresponding test information; testing the testing points in need of manual measurement by detection personnel to confirm a fault area, and displaying corresponding diagnosis results. The device and method provided by the invention can commonly meet the requirement of the automatic test for two types of audio integrated systems including the AMU (Audio Management Unit) of Airbus series planes and the REU (Remote Electronic unit) of the Boeing series planes, and are favorable for reducing the labor intensity of maintenance personnel and improving maintenance efficiency.
Owner:CIVIL AVIATION UNIV OF CHINA

Method and apparatus for testing performances of solid state disks

InactiveCN103578568AImprove test efficiencyMeet high-quality testing requirementsStatic storageTest efficiencyTest performance
The invention discloses a method and an apparatus for testing performances of solid state disks, wherein the method is used to realize automatic test processing on multiple solid state disks. The method comprises the following steps: step S100, acquiring object information of the multiple solid state disks connected with SATA interfaces; step S200, receiving an instruction about the current solid state disk configuration parameter information configured by a user, and employing a multithreading method to perform test on four test points such as sequential write, sequential read, random write and random read of the multiple solid state disks; step S300, obtaining corresponding continuous time point monitor data; step S400, performing calculation and analysis on the monitor data; and step S500, comparing the monitor data with standard data in a standard data base to obtain a test result. The provided method and the apparatus for testing performances of the solid state disks are capable of improving test efficiency of the solid state disks, providing an extremely detailed abnormal time point test report for the user and guaranteeing the accuracy of solid state disk performance test information.
Owner:南京潜海智能科技有限公司

Method for predicting electromagnetic wave propagation based on ray tracking method

The invention relates to a method for predicting electromagnetic wave propagation based on a ray tracking method, which comprises the steps of ray path searching, reflected and diffracted ray calculation, field intensity receiving, and path loss calculation. The conception of the method comprises the following steps: firstly, determining the position of an emission source, and finding out all propagation paths from the emission source to the ray of each test point according to building characteristics and distribution on a 3D map; secondly, determining reflection and diffraction losses and the like according to a Fresnel equation, a geometrical diffraction theory / uniform diffraction theory and the like so as to correspondingly obtain the field intensity from each path to each test point; and finally, performing coherence stack on the field intensities of all the arrived paths at the same test point to obtain the total received field intensity at each test point. The method has the advantage of better adaptability compared with the conventional statistical model. The method can be applied to predicting the electric wave propagation in a wireless communication system and adapts to the requirements on wireless network programming and designing.
Owner:SHANGHAI UNIV

Electrical terminal array with insulation displacement connectors and surge arrestors

The application describes an electrical terminal comprising a pair of longitudinally disposed contact members, each having a pair of insulation displacement connectors connectors, one at either end thereof, thereby to link two wire pairs, wherein. each contact member comprises a contact arm each extending in a defined direction, the contact arms leading to a pair of arrestor contacts spaced so as to accept a surge arrestor. The defined direction is preferably substantially transverse to the contact members. This enables the surge arrestor to be placed to one side of the electrical terminal, avoiding interference with ingoing and outgoing wires and avoiding inhibiting access to test points. The contact members are preferably parallel within the electrical terminal. The arrestor contacts are preferably spring contacts, thereby to enable replacement of the arrestor. The contact arms more preferably end at the spring contacts. In a particularly preferred embodiment, the contact arms are non-contiguous with the contact members but are joined thereto. This join can be by way of a lug extending from the edge of one of the two members and engaging within a slot of the other. This provides a particularly simple but effective electrical contact. The lug is preferably on the contact members, thereby placing the slot on the contact arms. This also avoids the need to bend a single-piece blank, thereby risking damage to or distribution of the IDC connector. The terminal will ideally be enclosed within a plastic housing, and this will preferably comprise a recess for receiving the surge arrestor, the arrestor contacts extending into the recess.
Owner:A C AGERTON

Method for evaluating performances of condensing steam turbine after high back pressure improvement

ActiveCN102967464ASmall amount of correctionSimple methodEngine testingEngineeringHeat losses
The invention discloses a method for evaluating performances of a condensing steam turbine after high back pressure improvement. The method comprises the following steps: distributing sufficient pressure, temperature, flow and electric power test points on a thermodynamic system of a turbine unit; stopping heating steam extraction on a low pressure cylinder gap bridge pipe; calculating the main steam flow, the cold reheat steam flow and the reheat steam flow; calculating the low pressure cylinder efficiency of a unit; taking a high back pressure heat supply unit as a pure condensing unit running under a high back pressure working condition, calculating the heat loss efficiency of the unit, and performing the second-type correction on the heat rate; and comparing the heat rate and the lower pressure cylinder efficiency with design values of a manufacture plant, and evaluating the lower pressure cylinder improvement technology and the unit improvement effect. The method disclosed by the invention is easy and feasible.
Owner:ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1

Mobile phone automatic test device and method

The invention relates to a mobile phone automatic test device and a method. The device is connected with a computer, and comprises a controller, a test clamp, a mobile phone and a collector, wherein the controller provides the test clamp with a power supply and an audio interface, and is connected with the test clamp through a key matrix winding displacement and a sensor cylinder winding displacement; the test clamp is used for fixing the to-be-tested mobile phone, a test thimble is pressed to the test point of the to-be-tested mobile phone, and a test signal of the test point is connected to the controller; an LCD screen, a data cable of a touch screen, and a signal wire of the mobile phone are connected to the 40Pin interface of the collector; and the collector is connected with the computer through a USB interface, and is further connected with a controller through an RS232 interface. By adopting the device, the defects of the prior art such as low production efficiency and inaccurate test results of the manual mobile phone test are overcome.
Owner:深圳市卓讯达科技发展有限公司

Distributed single-phase earth fault ranging system and ranging method thereof

The invention relates to a distributed single-phase earth fault ranging system that is used for realizing ranging of a fault on a high tension transmission line between two transformer substations. The system comprises: at least two sets of fault current detection device sets, which are installed at preset test points of a high tension transmission line; a remote wireless communication module; and a remote monitoring master station. The remote monitoring master station is respectively connected with the fault current detection device sets by the remote wireless communication module as well as receives fault currents collected by the fault current detection device sets by the remote wireless communication module; and the remote monitoring master station carries out comparison and an analysis according to positional data of the preset test points and length data of the high tension transmission line, so that a final fault position is obtained. In addition, a ranging method of the distributed single-phase earth fault ranging system is also provided. Power frequency fault current information and fault current travelling wave energy information are utilized to determine fault intervals; and different positioning equations are selected according to different fault intervals as well as fault point positions are determined; therefore, a dead zone problem can be solved, wherein the problem occurs when there are faults at a head and an end of a line, that is, when a fault point approaches a bus.
Owner:SHANGHAI JIAO TONG UNIV +1

Conductive dome probes for measuring system level multi-ghz signals

Methods and apparatus for accessing a high speed signal routed on a conductive trace on an internal layer of a printed circuit board (PCB) using high density interconnect (HDI technology) are provided. The conductive trace may be coupled to a microvia (μVia) having a conductive dome disposed above the outer layer pad of the μVia. In-circuit test (ICT) fixtures or high speed test probes may interface with the conductive dome to test the high speed signal with decreased reflection loss and other parasitic effects when compared to conventional test points utilizing plated through-hole (PTH) technology.
Owner:CISCO TECH INC

Gantry type four dimensional automatic measurement used for detecting display screen color performance

The present invention discloses a composition method of a gantry four-dimensional automatic measurement platform for detecting photochromic performance of display screens and a gantry four-dimensional automatic measurement platform using the method. The present invention relates to the automatic measuring technology of the photochromic performance of display screens, and comprises a platform base, a gantry frame, an X-axis moving mechanism, a Y-axis moving mechanism, a Z-axis lifting mechanism, and a display screen-carrying rotating platform. By moving the mechanisms to control the circuit, the four-dimensional automatic measurement platform for detecting photochromic performance of display screens is flexibly controlled to accomplish the three-dimensional move of the photochromic measuring instrument and the accurate one-dimensional rotation of the display screen to be measured, the present invention is characterized in stable movement of the photochromic measuring instrument, small rotation radium of the display screen, novel structure, small driving power needed, small size, light weight, low cost, rapid measuring speed, high reliability and so on. The present invention can be widely applied to the photochromic automatic detecting system of LCD or LED television screen, display screen, or mobile phone screen and so on, and the present invention can precisely adjust the coordinate position of the test points and the angle of the display screen intelligently according to the detecting requirement of photochromic performance of the display screens under the computer management, and rapidly accomplish the detection of photochromic performance.
Owner:ZHEJIANG UNIV

Method and System for Closed-Loop Control of an Artificial Pancreas

A local extremum of a function ƒ is determined by computing a Jacobian of ƒ at a test point x by adding an imaginary part to x and a Hessian of ƒ by adding two imaginary parts to a multicomplex copy of x and extracting a third imaginary part. Solving a system of equations defined by the Jacobian and Hessian yields a delta; the process is repeated until convergence. This method is used in each of a series of time intervals to compute an insulin-delivery amount for an insulin pump. ƒ is a model-predictive-control cost function; x is a set of successive candidate insulin delivery amounts beginning from a selected time interval. A system includes a glucose monitor and a controller using glucose measurement data therefrom to determine an insulin delivery amount for a time interval by minimizing ƒ; an insulin pump provides insulin corresponding to the delivery amount.
Owner:ANIMAS CORP +1

Testing apparatus and method for vehicle starting and charging system

A method and apparatus for testing a vehicle starting and charging system is provided in which a smart test module is connected to a remote device such as a battery tester, a scan tool, a personal computer or a personal digital assistant. The remote device is connected to a power source, which power source additionally provides power to the smart test module via the remote device. An alternator and / or a starter motor assembly is connected to the smart test module. The smart test module is capable of controlling the alternator field current and making voltage and current measurements at prescribed test points in the vehicle starting and charging system.
Owner:MAKHIJA SURENDER

Touchpad testing machine

A touchpad testing machine for testing resistive touchpad includes a conductive rubber; a processing unit for generating a pressure control signal and a positioning control signal; a positioning controller for moving the conductive rubber to touch test points of the touchpad, according to the positioning control signal; a pressure controller for exerting a pressing force on a touchpad via the conductive rubber, according to the pressure control signal; and an analog-to-digital converter (ADC) for receiving sensing signals generated from the touchpad through the conductive rubber when receiving the pressing force, and for converting the sensing signals into digital values Another touchpad testing machine for testing capacitive touchpad is also provided in the invention.
Owner:HON HAI PRECISION IND CO LTD

Liquid crystal panel, liquid crystal module and method for clarifying reasons resulting in poor screen images thereof

The invention discloses a liquid crystal panel which comprises a pixel area and a test short-circuiting bar area arranged at the periphery of the pixel area, wherein the short-circuiting bar area is provided with a plurality of first switch circuits, a plurality of scanning signal test points, a public electrode test point, a plurality of first unidirectional circuits or second switch circuits, and a plurality of data signal test points; scanning signal lines are connected with the scanning signal test points by the first switch circuits; data signal lines are connected with the data signal test points by the first unidirectional circuits or second switch circuits; and a public electrode is connected with a public electrode test point. The invention also discloses a method for clarifying reasons resulting in poor screen images of a liquid crystal module. Through the way, by using the liquid crystal panel disclosed by the invention, an effect of saving cutting equipment and a process of cutting a test lead of the short-circuiting bar area in the manufacturing process of assembly can be achieved, so that in the subsequent production stages after the manufacturing process of assembly, the test lead of the short-circuiting bar area can continue to be used for carrying out screen image detection, thereby improving the test accuracy of screen images.
Owner:SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD

Method for diagnosing fault by functional fault directed graph

The invention provides a method for diagnosing a fault by a functional fault directed graph, which can be applied to the field of fault diagnosis for some systems of aircrafts (such as an air source system, an anti-icing system and an air-conditioning system of an airplane gas path). The method comprises the steps of: decomposing a diagnosis object system to determine component relation and build a system structural model, confirming the corresponding input and output based on the component functions, determining the component fault model, analyzing fault propagation path and influence relation, setting test points and test information of a sensor, monitoring parameter variation that indicates the potential fault, forming an FF-SDG model, and at last, searching the potential fault source by a hierarchical policy inference method based on the FF-SDG model to perform fault diagnosis. The method can quickly and effectively find out the system fault source of the aircraft system, discover the fault cause, and make up shortage of the fault diagnosis technique based on manuals and cases when some fault cannot be predicated and the knowledge is difficult to be acquired by domain experts.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Wireless Collection and Analysis of Machine Data

A sensor unit is configured as a single body, removably mounted in its entirety to a test point location on a machine so machine vibrations propagate into the single body. Within are an accelerometer, circuit board, wireless interface, signal processor, and battery. The sensor unit transmits sensor data wirelessly in real time to a data collection unit. A technician with data collection unit in hand goes from machine to machine, along a route of multiple test point locations on multiple machines, mounting and dismounting the sensor unit and collecting machine vibration data. The sensor unit is configured to reduce frequency response impacts of the mass and volume of the circuit board, wireless interface, signal processor, and battery on dynamic behavior of the sensor unit with respect to machine vibrations to achieve a frequency response rating comparable to a wired sensor.
Owner:ACOEM FRANCE
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