31results about How to "Good detection function" patented technology

A modular jack (100) includes an insulative housing (1) defining a receiving cavity (151) for receiving a complementary connector, a contact module (2), a detective switch (3) and an outer metal shield (4) enclosing the housing. The detective switch includes an immovable switch (31) and a movable switch (32) abutting against the immovable switch. The immovable and movable switches respectively include an engaging portion (311, 3212) and a soldering portion (313, 323) for electrically connecting with a printed circuit board. The movable switch further includes a projecting portion (3211) for engaging with the complementary connector.

An electrical connector (100) for electrically connecting with a mating connector, includes an insulative housing (1) defining a cavity (16), a number of contacts (2) extending into the cavity, and a detective switch (3) accommodated in the housing (1). The detective switch includes a stationary switch (31) and a movable switch (32). The stationary switch and the movable switch respectively include a first and a second engaging portion (313, 323) for connecting / disconnecting with each other. The movable switch (32) includes a spoon-shaped projecting portion (324) positioned in a free end of the second engaging portion (323) and extending into the cavity (16) for engaging with the mating connector.

The invention discloses a testing device for port, and the testing device for port is used for detecting whether the transmission signal at the periphery interface of the electronic device is normal, the testing device comprises a circuit board, provided with a connector matching with the port to be tested, a testing socket, a first dynamic arm and a plurality of cables, one end of the first dynamic arm is pivoted and fixed on the circuit board and electrically connected with the testing socket, one end of each cable is connected to the corresponding terminal of the connector while the other end of each cable is fixed on the circuit board, and the other end of the first dynamic arm can contact the other end of each cable while the first dynamic arm rotates. The testing device for port can avoid tedious work caused by inserting or pulling out the detection probe and switching and protect the detection probe away from damage, so as to raise the work efficiency and protect the product performance.

The invention discloses a detecting method based on digital audio waveform sudden changes, which is a statistical judging method disclosed according to the characteristic of a ridge of a speech spectrum caused by audio waveform sudden changes, and belongs to the multimedia information safety field. For waveform sudden change detection due to copying-pasting operation of a digital audio, ridge span changes before and after audio joint points in a speech spectrum log domain are analyzed, and a ridge factor is constructed to describe ridge bandwidth of a one-frame audio log speech spectrum to represent short-time energy change characteristics, and a difference operator is utilized for distinguishing sudden noises of audio, and ridge factor identification is caused by audio waveform sudden changes. The method comprises the following steps of carrying out short-time Fourier transformation and logarithmic transformation on an audio signal to obtain an audio spectrum of the log domain; calculating the ridge factor of each frame in the speech spectrum; and detecting and judging the difference transformation result for the ridge factor. The detecting method disclosed by the invention can identify audio waveform sudden changes effectively, and provides an effective method for detecting a digital audio editing operation boundary.

The invention discloses a concealed fecal occult blood detecting device and method. The device comprises an occult blood detecting module for detecting whether a fecal aqueous solution in a toilet contains an occult blood signal, the occult blood detecting module is electrically connected to an intelligent toilet, and the intelligent toilet can be fixed on the toilet in an openable or closeable manner; the toilet is provided with a blow-off pipe, and the occult blood detecting module is disposed on the blow-off pipe. The occult blood detecting module formed by combining a light source, an optical sensor, a first microcontroller, and a DC-DC conversion module is used, the light source and the optical sensor are concealed in the blow-off pipe of the toilet, and an optical lens and a light guide tube guide the beam emitted by the light source to penetrate the fecal aqueous solution to generate penetrating light and irradiate the penetrating light onto the optical sensor, thereby realizingthe function of detecting whether the feces contains an occult blood signal; and the device is precision in overall design and simple and compact in structure, has an efficient detection function andlow cost, and is suitable for popularization and application.

The invention discloses a graphene sphygmomanometer watch. The graphene sphygmomanometer watch comprises a watch dial plate body, a first watch strap is movably connected to one side of the watch dial plate body, a fixing box is fixedly connected to the side, away from the watch dial plate body, of the first watch strap, a press rod penetrates through the top of the fixing box, a fixing plate is fixedly connected between the two sides of the inner cavity of the fixing box, an opening is formed inside the fixing plate, the press rod extends to one end of the inner cavity of the fixing cavity to penetrate through the fixing plate and extends inside the opening, a second watch strap is fixedly connected to the other side of the watch dial plate body, and a fixing block is fixedly connected to the end, away from the watch dial plate body, of the second watch belt. The invention relates to the technical field of graphene. The graphene sphygmomanometer watch can well measure the blood pressure of a patient, is safe, reliable and high in sensitivity and drastically guarantees the health of a user, so that the device has a very good detection function, and a large amount of time is saved, so that the device is very convenient to use.

The present invention provides an image correction method and detection device. The method includes: determining the observation area from the first image frame in the dynamic image, and obtaining the center position of the observation area in the first image frame; Determine the first feature region that conforms to the grayscale feature; obtain the first vector according to the center position of the first feature region in the first image frame and the center position of the observation area; in the second image frame in the dynamic image, according to the grayscale feature Find the second feature area; obtain the second vector according to the center position of the second feature area in the second image frame and the center position of the observation area; and correct the observation area in the third according to the difference between the two vectors and the first vector The position in the image frame. The image correction method and detection device provided by the present invention can maintain the observation area in an appropriate position in each image frame, thereby providing good detection function and more accurate detection results.

The invention relates to an apparatus for rapidly and accurately detecting environment humidity. The apparatus is a humidity sensor, the humidity sensor is in a side-heating structure, which is composed of an alumina ceramic tube with two ends arranged with gold electrodes, a sensitive material layer coated on the surface of the ceramic tube, and a heating coil passing through the ceramic tube, the sensitive material layer is composed of a sensitive material I arranged on the surface of the ceramic tube, and a sensitive material II arranged on the surface of the sensitive material I, the sensitive material I is ZnO nano particles, and the sensitive material II is Fe2O3 / graphene nano fiber.

The invention relates to an apparatus for rapidly and accurately detecting environment humidity. The apparatus is a humidity sensor, the humidity sensor is in a side-heating structure, which is composed of an alumina ceramic tube with two ends arranged with gold electrodes, a sensitive material layer coated on the surface of the ceramic tube, and a heating coil passing through the ceramic tube, the sensitive material layer is composed of a sensitive material I arranged on the surface of the ceramic tube, and a sensitive material II arranged on the surface of the sensitive material I, the sensitive material I is ZnO nano particles, and the sensitive material II is Fe2O3 / graphene nano fiber.

The invention discloses a device for detecting the availability of double-nose zipper pulls. The device mainly comprises a mounting seat, an insulating piece and a detection cylinder. The detection cylinder is arranged on the mounting seat, and the insulating piece can be driven by the detection cylinder to ascend and descend; two groups of detection metal wires which are electrically connected with a control system of the device are mounted at the bottom of the insulating piece side by side. The device for detecting the availability of the double-nose zipper pulls has the advantages that the device is simple and compact in structure; the availability of the zipper pulls can be effectively detected on the premise that operation is unaffected, the device is reliable and stable in structure and low in cost and has excellent detection functions, and the like.

The invention discloses a switch calibration method applied to a nuclear power station float level meter and a switch calibration device applied to the nuclear power station float level meter. The switch calibration method comprises the following steps: receiving and storing a preset volume of to-be-tested liquid; when a switch verification signal is received, injecting the to-be-tested liquid into or discharging the to-be-tested liquid out of the nuclear power station buoy liquid level meter within preset time, and after a pressure sensor is adopted to detect the liquid pressure and the liquid level of the nuclear power station buoy liquid level meter, converting the to-be-tested liquid into sampling current to be output; comparing the sampling current with a preset current to obtain a comparison result; and judging and displaying the on-off operation information of the float level meter according to the comparison result. According to the embodiment of the invention, the volume information of the to-be-tested liquid in the nuclear power station float liquid level meter is converted into the current information, so that the operation state of the nuclear power station float liquidlevel switch is automatically verified, time and labor are saved, and the detection precision of the operation state is relatively high; and the personal safety of technicians in the checking processof the float level switch of the nuclear power station is ensured.

The invention discloses a protein-wrapped fluorescent gold nanocluster, a preparation method and an application thereof. The gold nanocluster is a gold nanocluster wrapped by aprotinin, and the gold nanocluster is composed of aprotinin molecule and Au22 or Au21 or Au16 composition. Compared with the prior art, the present invention not only has fluorescence, but also the activity of aprotinin itself is not affected, and can be applied to the fields of metal ion detection, biological imaging and protease detection.

The invention discloses a rockfall detection mechanism for mine transportation rails, which includes a main body of a rail mine car, a fixed frame, a rock blocking groove and a detection mechanism. When carrying out mine rail ore transportation work in the present invention, the detection mechanism is set during ore transportation In the process, the falling ore can be detected very well, and then help the staff to judge whether the ore has fallen in time, and through the fixed frame and rock blocking groove set on the side of the mine car, the falling ore can be detected Collect and store to prevent the falling ore from falling during transportation and cause economic losses, so as to ensure the working efficiency of ore transportation and improve the economic efficiency of work.

The invention relates to an electric wiring protection device which comprises a phase line conductor, a null line conductor, a ground wire conductor, a switching device, a rectifier bridge, a first residual current detection circuit, a second residual current detection circuit, a signal processing circuit, a signal driving circuit and an excitation device, wherein the first residual current detection circuit detects the residual current of the phase line conductor and the null line conductor; the second residual current detection circuit detects the residual current of the ground wire conductor; and the signal processing circuit and the signal driving circuit can independently generate a first driving signal and a second driving signal. According to the device, the detection of the residual current of the phase line conductor and the null line conductor and the detection of the residual current of the ground wire conductor are independently performed, so that the detection reliability and the safety of the device are improved.