44results about How to "Increase the detection area" patented technology

The invention provides a life detection radar-based multiple-detection point target searching and locating method. According to the life detection radar-based multiple-detection point target searching and locating method, a life detection radar is adopted to perform detection on a plurality of detection points; the position of a live body is solved based on multiple-detection point criterions; the position of the live body is determined repeatedly through adopting the K-nearest neighbor principle; and therefore, the locating accuracy and detection probability of the spatial position of the live body can be improved. The life detection radar-based multiple-detection point target searching and locating method has the advantages of large detection area, low hardware cost and easiness in implementation in practical application.

The invention provides an electric dipole antenna which includes antenna feelers, and a match circuit and a transmission / reception port, both of which are connected with the antenna feelers. The lengths of the antenna feelers are adjusted through manual operation or an adjustment structure. The invention also provides a use method of the electric dipole antenna. The length of the electric dipole antenna can be adjusted so that the resonance frequency can be adjusted according to the difference of detection objects or difference of positions relative to the detection objects and thus the resonance frequency is at a work frequency. Therefore, a problem that an electric dipole antenna in the prior magnetic resonance system cannot be tuned or the tuning range is small and leads to extra loss is solved. Therefore, the electric dipole antenna is stable in work and applicable to clinical application of a high-field magnetic resonance system.

The invention provides an electric tailgate system based on a vehicle radar and a control method. The electric tailgate system comprises an electric tailgate control module, an electronic control assembly module, a tailgate control alarm module, a millimeter wave radar receiving and transmitting module, an extremely wide horizontal field angle antenna, a keyless induction receiving and transmitting module, a multifunctional vehicle key and a multifunctional vehicle key module. , one-kick control of the electric tail door of the vehicle can be realized by only depending on one set of existing vehicle millimeter-wave radar transceiving module and keyless induction transceiving module, so that the loading cost is reduced, and the original detection function of the vehicle-mounted radar is still considered. , a user can control the automatic opening of the vehicle door with feet when the user is inconvenient to pull the vehicle door with hands, the problem of resource waste caused by highpower consumption of the existing capacitive sensing system in the working process is avoided, and the problems of low sensitivity, potential safety hazard due to the fact that the user is too close to the vehicle door and the like in the traditional opening method are solved.

The invention relates to an organic metal film preparation method for enhancing the ultraviolet response of a silicon-based imaging device. The preparation method is characterized in that a pre-baked organic metal valency substance Alq3 fine power is taken as coating material; UV frequency conversion materials are coated by vaporization into the film by adopting vacuum deposition on the surface of photosensitive units of the silicon-based imaging device. The baking time of the pre-baked organic metal valency substance Alq3 fine power is six to twelve hours, the temperature is 300 DEG C. The vapor deposition conditions of the vacuum deposition preparing a frequency conversion film are that: the vacuum degree is 2*10<-3>Pa; the optical monitoring wavelength is 500nm, the thickness of the film is 125 nm, the thickness of the optical is 125nm, the evaporation current is 20A.; the baking temperature is 200 DEG C. The film not only effectively improves the Ultraviolet response capability of the silicon-based imaging device, but also overcomes the problem that the organic frequency conversion film weakens and ages with time.

The invention discloses a method and device for adjusting a detection angle of a detection device and a vehicle comprising the adjusting device. The method comprises the following steps of acquiring first bending information of a front road in which the vehicle currently runs; acquiring an adjusting angle of the detection device according to the first bending information; and controlling the detection device to carry out detection angle adjustment according to the adjusting angle. According to the method, the angle of the detection device is adjusted according to the actual situation of the front road, the detection area of the detection device is effectively enlarged, the detection blind area of the detection device is reduced, the driving safety is improved, and the use experience of a user is improved.

The invention relates to a boulder detection method, which comprises the following steps: putting an ultrasonic probe on a position to be detected through a drill hole, starting a driving device, driving a plurality of ultrasonic transducers in the direction vertical to the hole wall of a detection hole to ensure that the ultrasonic probe is tightly attached to and coupled with the hole wall of the detection hole, then detecting by using ultrasonic waves to obtain the accurate spatial position of a wave-facing surface of a boulder, transmitting data to a control computer through a data line, and generating the three-dimensional spatial position and size of the boulder in proportion. The method for detecting the boulders through the ultrasonic waves can greatly reduce the workload of exposing the boulders in the traditional exploration method, save a large amount of cost, effectively avoid the problems of boulder omission, low accuracy and the like caused by the boulder exploration in the traditional exploration method, improve the working efficiency of boulder exploration, improve the accuracy of boulder exploration and reduce the engineering construction risk.

The invention relates to the field of mechanical facilities, in particular to a fingerstall type ultrasonic probe which is used for coordinating puncture operation. The fingerstall type ultrasonic probe comprises a casing, a connection device and a transducer. The casing comprises a tube-sleeve-shaped fingerstall and a casing body, wherein the casing body is fixed on the excircle side of the fingerstall. A cavity is formed in the casing body, a hole is formed in the bottom of the casing body, the transducer is installed in the casing body, and an acoustic window of the transducer is corresponding to the hole of the casing body. The connection device can move in the circumferential direction of the fingerstall after one end of the connection device is connected with the fingerstall, and the other end of the connection device is fixedly connected with the casing body. The fingerstall type ultrasonic probe is small in size; doctors can perform ultrasound detection and puncture operation simultaneously after they sleeve the probe in their fingers, and thus the operation steps are simplified. During operation, the expected effect can be achieved by slightly moving the fingerstall type ultrasonic probe, and the puncture success rate is improved. The connection device capable of moving in the circumferential direction of the fingerstall is additionally arranged between the casing body and the fingerstall so the detection area of the probe is enlarged and the problem of small probes of being limited in the field of view is solved.

The invention provides an electric dipole antenna which includes antenna feelers, and a match circuit and a transmission / reception port, both of which are connected with the antenna feelers. The lengths of the antenna feelers are adjusted through manual operation or an adjustment structure. The invention also provides a use method of the electric dipole antenna. The length of the electric dipole antenna can be adjusted so that the resonance frequency can be adjusted according to the difference of detection objects or difference of positions relative to the detection objects and thus the resonance frequency is at a work frequency. Therefore, a problem that an electric dipole antenna in the prior magnetic resonance system cannot be tuned or the tuning range is small and leads to extra loss is solved. Therefore, the electric dipole antenna is stable in work and applicable to clinical application of a high-field magnetic resonance system.

The invention provides an indium tin oxide / vertical graphene photoelectric detector composite structure and a preparation method thereof and belongs to the technical field of a photoelectric detector.The photoelectric detector comprises the following components from the bottom up in sequence: glass serving as a substrate of the device, vertical graphene serving as an optical absorption layer andan electron transport layer of the device, an ITO (indium tin oxide) thin film serving as a transparent current assisted diffusion layer, and titanium / gold electrodes arranged at the two sides of thevertical graphene and connected to an external power source. Since the vertical graphene has a broadband spectrum response characteristic, the detector operates in bands from the visible light band tothe infrared band; the designed ITO thin film can effectively transfer photo-induced carriers, thereby suppressing defect influence and improving output photocurrent of the device; besides, the detector has high light absorption rate and light response, and can work under a low bias voltage; the process is simple and repeatable; and detection efficiency and rate of finished product of the detector are improved effectively.

The present application discloses an optical lens. In one embodiment, the optical lens sequentially includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens along the optical axis from the object side to the image side , wherein the first lens has a negative refractive power and is in the shape of a meniscus with a convex surface facing the object side; at least two of the second lens, the third lens, the fourth lens and the fifth lens are cemented together; The sixth lens has positive power, and both the object side and the image side of the sixth lens are convex; and the seventh lens has negative power. By using the optical lens according to the present application, a wide adjustable focus range, a telephoto large viewing angle, a large central angular resolution and a high resolution capability can be realized.

The invention provides a miniaturized fixed star tracking optical system capable of achieving whole-day observation. The whole-day miniaturized fixed star tracking optical system comprises an imaging unit, a band-pass fiber, a main reflector, an auxiliary reflector and a scan reflector and a through hole is formed in the center of the main reflector, wherein the imaging unit, the band-pass fiber, the main reflector, the auxiliary reflector and the scan reflector are sequentially arranged along an optical axis of an imaging optical path; incident light sequentially passes through the scan reflector, the main reflector and the auxiliary reflector, is reflected for three times, and then is emitted to the imaging unit through the central through hole of the main reflector and the band-pass filter; a part of an optical path of the incident light coincides with a part of an imaging optical path in the scanning field from 30 degrees to 50 degrees so that the requirement for miniaturization of the system can be satisfied; the main reflector and the auxiliary reflector are respectively provided with a light shield and the edge of the scan reflector perpendicularly extends so that a light shielding board can be formed. Field scanning is conducted through the scan reflector, a zone between the 30-degree airspace and the 80-degree airspace of the zenith can be observed all day, and an instant field of the system is smaller than 30'.