A work machine includes a control device including a lead position detecting section to detect a lead position which is positions of a pair of leads based on imaged data imaged by an imaging device, a first detecting region setting section to set, based on the lead position detected by the lead position detecting section, a first detecting region outside the pair of leads including a part of a bottom section outside the pair of leads, a second detecting region outside the pair of leads, being opposed to the first detecting section across the pair of leads including a part of the bottom section, and a polarity determining section configured to determine the polarity of the pair of leads based on whether the mark portion exists in each of the first detecting region and the second detecting region.

Provided are a foreign substance detecting circuit, an electronic device including the foreign substance detecting circuit, and a method of detecting foreign substance. The electronic device includes a connector connected to an external cable and including a plurality of pins, a foreign substance detecting circuit configured to, when the cable is connected to the connector, detect a resistance from a first pin that is set to be in an open state or to be connected to a pull-down resistor from among the plurality of pins in a state where the cable is connected, and determine whether there is a foreign substance in the connector, and an application processor configured to control operations in the electronic device for performing a post-process when there is the foreign substance in the connector, according to a detection result from the foreign substance detecting circuit.

The invention relates to a test needle for measuring electrically conductive layers in holes of printed circuit boards, as well as to a test probe equipped with such a test needle and to a flying probe tester for testing printed circuit boards equipped with such a test needle or such a test probe.

The test needle has a capacitive measuring body, which is connected via a cable to a capacitive measuring device. The cable is shielded so that only the capacitive measuring body can form a capacitive coupling with other electrically conductive bodies. This makes it possible to determine this capacitive coupling with a high local resolution.

The system for automatic signal measurement includes a device under test, a control circuit, a data processing circuit, and a display device. The device under test includes a test pad area, which has multiple exposed test pads coupled to multiple circuit nodes in the device under test. The control circuit is coupled to the exposed test pads through a clamping fixture. The control circuit receives multiple test signals from the exposed test pads, stores multiple test signals in the memory, and controls a power on/off operation applied to the device under test through the exposed test pads. The data processing circuit is configured to receive the test signals stored in the memory, and determine whether the test signals meet a set of predetermined criteria to generate a verification result. The display device displays a signal waveform of the test signals and the verification result.

The present disclosure provides a method, system and apparatus for detecting polarity of component, and a computer-readable storage medium. The component polarity detection method includes: selecting first component symbols similar to graphs in a pre-created template library of component polarity symbols from a polar graph layer of a to-be-detected printed circuit board (PCB), and sifting out second component symbols each having polarity from the selected first component symbols; and traversing each second component symbol having polarity, to detect whether a polarity symbol that has been already stored in the template library is in the second component symbol having polarity; if yes, examining whether a polarity position of the polarity symbol in the second component symbol is correct; and if the polarity position is incorrect, outputting a report indicating that the polarity position of the polarity symbol in the second component symbol is incorrect.

Aspects of the present disclosure are directed toward detection of leakage from an enclosed component using an apparatus. The apparatus includes a printed circuit board (PCB) including a first conductive trace, a second conductive trace, and sets of terminals electrically connected to the first and second conductive traces configured and arranged to indicate changes in impedance caused by leaked liquid. The respective portions of the first and second conductive traces are interleaved, and configured and arranged to suspend flow of the leaked liquid from an enclosed component, thereby causing a change in impedance between at least one of the sets of terminals.

A device for inserting n number of the electronic components into n number of housing recess in a carrier tape at once includes an imaging device that images, at an imaging position provided at an upstream side of the insertion position, a portion of the carrier tape that contains the n number of housing recesses; and a processor that determines, on the basis of an image captured by the imaging device, a two-dimensional position of each of the n number of housing recesses contained in the image relative to a reference point in the image, and that causes a two-dimensional position of the insertion position for the n number of the housing recesses that have been imaged by the imaging device to be corrected in accordance with the captured image so as to mitigate positional deviations of the n number of the housing recesses in the tape.

A measuring system and method is configured to analyze numerous different types of interconnects having varying degrees of complexity. The measuring system and method characterizes an interconnect to be tested by a predefined reflection coefficient signature. Each specific interconnect is predefined by a reflection coefficient signature that is unique to that specific interconnect. Once the reflection coefficient signature is defined, a corresponding reflection envelope is defined which defines boundary limits about the reflection coefficient signature. Subsequent testing of the specific interconnect results in a measured reflection coefficient curve, which is compared to the corresponding reflection envelope. The specific interconnect under test is considered acceptable if the values of the measured reflection coefficient curve do not fall outside the reflection envelope. If one or more values of the measured reflection coefficient curve fall outside the reflection envelope, then the specific interconnect under test fails the test.

The disclosed embodiments provide a system that detects unwanted electronic components in a target computing system. During operation, the system obtains target electromagnetic interference (EMI) signals, which were gathered by monitoring EMI signals generated by the target computing system, using an insertable device, wherein when the insertable device is inserted into the target computing system, the insertable device gathers the target EMI signals from the target computing system. Next, the system generates a target EMI fingerprint from the target EMI signals. Finally, the system compares the target EMI fingerprint against a reference EMI fingerprint for the target computing system to determine whether the target computing system contains any unwanted electronic components.

A wire connector for a vehicle may include: a male connector having male terminals; a female connector having female terminals into which the male terminals of the male connector are inserted; and a circuit portion through which a current supplied by a continuity tester flows. The continuity tester can detect whether the male connector and the female connector are assembled without error.