Abstract: Disclosed in the present invention is a nonlinear optical crystal. The chemical formula of the nonlinear optical crystal is MHgGeSe4, M being selected from Ba or Sr. The nonlinear optical crystal has no symmetrical center, belongs to an orthorhombic crystal system, and has a space group Ama2. The nonlinear optical crystal is an infrared nonlinear optical crystal, and has the advantages of great nonlinear optical effect, wide light transmitting band, high hardness, good mechanical properties, breakage resistance, deliquescence resistance, easiness in processing and preserving, etc. Also disclosed in the present invention are a method for preparing the nonlinear optical crystal and application thereof.

Abstract: The present invention provides a welding seam tracking sensor, which belongs to the technical field of sensors, and alleviates the problem of detection performance reduction of a sensor. The welding seam tracking sensor comprises a sensor housing, a protection cover and a protection sheet; the protection cover is mounted on the bottom of the sensor housing, an air inlet is provided on the upper surface of the protection cover, and a blowing hole is provided on the bottom of the sensor housing. The air inlet and the blowing hole is closely connected; there is a visual hole and a laser hole in the bottom of the protection cover, a transverse slot is formed inside the protection cover, a socket is opened on the side wall of the protection cover, the protection sheet is inserted into the slot through the socket.

Abstract: The present invention provides a welding seam tracking sensor, which belongs to the technical field of sensors, and alleviates the problem of detection performance reduction of a sensor. The welding seam tracking sensor comprises a sensor housing, a protection cover and a protection sheet; the protection cover is mounted on the bottom of the sensor housing, an air inlet is provided on the upper surface of the protection cover, and a blowing hole is provided on the bottom of the sensor housing. The air inlet and the blowing hole is closely connected; there is a visual hole and a laser hole in the bottom of the protection cover, a transverse slot is formed inside the protection cover, a socket is opened on the side wall of the protection cover, the protection sheet is inserted into the slot through the socket.

Abstract: The present invention relates to a connector assembly and a plug connector and a core unit thereof. The core unit, with its front end being an inserted end, includes a front casing and a rear casing oriented and assembled in front and rear directions. The rear casing is provided with a guide mounting structure for disposing an optical cable inside the rear casing. The front casing is provided with a plug body at a front end thereof. A limiting structure is arranged between the front casing and the rear casing to limit the positions to which the front and rear casings are separated in the front and rear directions, ensuring that after the plug body is plugged in place, a protective casing and a receptacle casing are locked and fit to each other continuously.

Abstract: Disclosed are an adapter (6) and an adapter assembly using the adapter (6). The adapter (6) comprises an adapter shell (13, 12, 11), wherein an adapter socket contact part (18), an adapter socket locking structure, an adapter plug contact part (14), an adapter plug locking structure, and a seal fit portion for being inserted into a corresponding connecting sleeve (4) in a sealing manner are arranged on the adapter shell (13, 12, 11), and the seal fit portion is located between the adapter socket locking structure and the adapter plug locking structure. The adapter and the adapter assembly using same have a waterproof function.

Abstract: The present invention relates to a connector assembly and a plug connector and a core unit thereof. The core unit, with its front end being an inserted end, includes a front casing and a rear casing oriented and assembled in front and rear directions. The rear casing is provided with a guide mounting structure for disposing an optical cable inside the rear casing. The front casing is provided with a plug body at a front end thereof. A limiting structure is arranged between the front casing and the rear casing to limit the positions to which the front and rear casings are separated in the front and rear directions, ensuring that after the plug body is plugged in place, a protective casing and a receptacle casing are locked and fit to each other continuously.

Abstract: Disclosed are an adapter (6) and an adapter assembly using the adapter (6). The adapter (6) comprises an adapter shell (13, 12, 11), wherein an adapter socket contact part (18), an adapter socket locking structure, an adapter plug contact part (14), an adapter plug locking structure, and a seal fit portion for being inserted into a corresponding connecting sleeve (4) in a sealing manner are arranged on the adapter shell (13, 12, 11), and the seal fit portion is located between the adapter socket locking structure and the adapter plug locking structure. The adapter and the adapter assembly using same have a waterproof function.

Abstract: A floating adjustable sealing mechanism and a connector using same. The floating adjustable sealing mechanism comprises an adhesive sleeve, and a support of which a front end is a plugging end. An internal hole of the support is provided with a guide mounting section having a guiding direction extending along a front-rear direction. The adhesive sleeve is mounted in the internal hole of the support by means of a guide mating section which is disposed thereon and in a sliding and sealing fit with the guide mounting section. The length of the guide mounting section is greater than the length of the guide mating section.

Abstract: A floating adjustable sealing mechanism and a connector using same. The floating adjustable sealing mechanism comprises an adhesive sleeve, and a support of which a front end is a plugging end. An internal hole of the support is provided with a guide mounting section having a guiding direction extending along a front-rear direction. The adhesive sleeve is mounted in the internal hole of the support by means of a guide mating section which is disposed thereon and in a sliding and sealing fit with the guide mounting section. The length of the guide mounting section is greater than the length of the guide mating section.

Abstract: The present invention discloses a method and a device to debug the Loongson CPU (a MIPS-structure CPU) and bridge chips. The device, including HT bus interfaces and the corresponding switches, connects the Loongson CPU and bridge chips through HT bus interfaces. Southbridge chips and northbridge chips with HT buses are selected in the following order: introducing the pins on the Loongson CPU and bridge chips into the debug device; debugging the pins on the Loongson CPU to identify whether there are any bugs with the pins; connecting the pins from the CPU and bridge chips to debug them. If the HT bus of the Loongson CPU fails to accord with the standard protocol, the problematic signal can be identified and further adjusted to improve the CPU. With the help of FPGA, multiple HT bus interfaces can be simulated. As a result, multiple chipsets can be linked to the Loongson CPU, which may be debugged simultaneously.

Abstract: The present invention discloses a method and a device to debug the Loongson CPU (a MIPS-structure CPU) and bridge chips. The device, including HT bus interfaces and the corresponding switches, connects the Loongson CPU and bridge chips through HT bus interfaces. Southbridge chips and northbridge chips with HT buses are selected in the following order: introducing the pins on the Loongson CPU and bridge chips into the debug device; debugging the pins on the Loongson CPU to identify whether there are any bugs with the pins; connecting the pins from the CPU and bridge chips to debug them. If the HT bus of the Loongson CPU fails to accord with the standard protocol, the problematic signal can be identified and further adjusted to improve the CPU. With the help of FPGA, multiple HT bus interfaces can be simulated. As a result, multiple chipsets can be linked to the Loongson CPU, which may be debugged simultaneously.