Abstract: An infrared range-measurement device includes an emitting module, a receiving module and a calculating module, the emitting module includes an emitting light source and a driving circuit, and the receiving module includes a planar array photosensitive chip. The emitting light source, under the drive of the driving circuit, emits a test light beam, the test light beam is reflected by an object in a test range and then is incident on the planar array photosensitive chip, and the calculating module outputs a test light intensity or a test distance; an emitting lens is provided in an emitting light path of the emitting module. By shaping the test light beam to control a divergence angle and a shape of the light beam, and to make it match with the set working area of the planar array photosensitive chip, the overall utilization ratio of the test light beam is increased.

Abstract: An anti-interference ranging method and an anti-interference ranging apparatus are provided. The method includes: detecting, by a first light detection and ranging device, whether a light detection process is interfered by a second light detection and ranging device in the ranging system; delaying, by the first light detection and ranging device, the light detection process for a preset time period if it is detected that the light detection process is interfered by the second light detection and ranging device; and acquiring, by the first light detection and ranging device, detection data collected in the light detection process, and processing, by the first light detection and ranging device, the detection data to obtain a ranging result if it is detected that the light detection process is not interfered by the second light detection and ranging device.

Abstract: The present disclosure relates to an optical ranging device. The optical ranging device comprises a housing, a bottom cover, an emitting lens, a receiving lens and a circuit board. The emitting lens and the receiving lens are fixed on the circuit board. The circuit board comprises a light emitting module, receiving module and data processing and controlling module. An infrared light emitted by a light source of the light emitting module passes through the emitting lens and the housing successively and enters the external environment. The infrared light reflected by the object passes through the housing and the receiving lens successively and is received by the receiving module which is connected to a signal processing and controlling module. The distance between the optical ranging device and the object is calculated based on the Time of Flight principle.

Abstract: An anti-interference ranging method and an anti-interference ranging apparatus are provided. The method includes: detecting, by a first light detection and ranging device, whether a light detection process is interfered by a second light detection and ranging device in the ranging system; delaying, by the first light detection and ranging device, the light detection process for a preset time period if it is detected that the light detection process is interfered by the second light detection and ranging device; and acquiring, by the first light detection and ranging device, detection data collected in the light detection process, and processing, by the first light detection and ranging device, the detection data to obtain a ranging result if it is detected that the light detection process is not interfered by the second light detection and ranging device.

Abstract: An infrared range-measurement device includes an emitting module, a receiving module and a calculating module, the emitting module includes an emitting light source and a driving circuit, and the receiving module includes a planar array photosensitive chip. The emitting light source, under the drive of the driving circuit, emits a test light beam, the test light beam is reflected by an object in a test range and then is incident on the planar array photosensitive chip, and the calculating module outputs a test light intensity or a test distance; an emitting lens is provided in an emitting light path of the emitting module. By shaping the test light beam to control a divergence angle and a shape of the light beam, and to make it match with the set working area of the planar array photosensitive chip, the overall utilization ratio of the test light beam is increased.

Abstract: The present disclosure relates to an optical ranging device. The optical ranging device comprises a housing, a bottom cover, an emitting lens, a receiving lens and a circuit board. The emitting lens and the receiving lens are fixed on the circuit board. The circuit board comprises a light emitting module, receiving module and data processing and controlling module. An infrared light emitted by a light source of the light emitting module passes through the emitting lens and the housing successively and enters the external environment. The infrared light reflected by the object passes through the housing and the receiving lens successively and is received by the receiving module which is connected to a signal processing and controlling module. The distance between the optical ranging device and the object is calculated based on the Time of Flight principle.

Abstract: A multistage electromagnetic purification method of molten metal, which employs a multistage separator composed of two or more multichannel straight-pass separators bonded together with inorganic high-temperature adhesive. Each stage of the separators is set up in such a manner that the region of centerline of each channel in the former separators is occupied by the sidewall of the next separators at the corresponding position therein; while simultaneously the position in the next separators becomes a region close to sidewall. The multistage separator eliminates the “dead zone” of electromagnetic separation, realizes the transformation from “weak zone” to “strong zone” of electromagnetic separation, and significantly increases removal efficiency of inclusions in the melt with great volume under the effect of induced magnetic field.

Abstract: The present invention concerns a multistage-electromagnetic purification method of molten metal, which relates to the field of casting technique. The method of present invention employs a multistage separator instead of a single-stage one. The multistage separator is composed of two or more multichannel straight-pass separators bonded together with inorganic high-temperature adhesive. Each stage of the separators should be set up in such a manner that the region of centerline of each channel in the former separator is occupied by the sidewall of the next separator at the corresponding position therein, simultaneously the position in the next separator, which is corresponding to the central region of the channel in former separator, becomes a region close to sidewall.