174results about How to "Avoid outside interference" patented technology

A wireless communications network topology and its implementation enable the wireless network implementing the topology to be sufficiently robust to avoid or mitigate the consequences of various node failures. The inventive network topology includes a triangular ring mesh, preferably constituting a flower topology in its entirety. For each node in a given layer of stations, at least two links are provided, one to each of two selected nodes in an adjacent layer of stations.

The invention discloses a wolfberry picking robot. A wolfberry picking robot system adopts a pinhole imaging technology and mainly comprises a data acquisition card and an analog-digital conversion module. A control method mainly adopts a fuzzy PID self-adaptive control way and is mainly used for controlling the vision. Hardware of the wolfberry picking robot mainly consists of a mechanical arm, a rotor structure, a picking head and various motors. By adopting the wolfberry picking robot, the automatic picking of wolfberry can be implemented, the manpower can be completely substituted, and the problem that the manual picking is subjected to the influence of the environment can be solved. The wolfberry picking robot is high in automation degree and high in picking efficiency.

The invention discloses a steel wire rope magnetic memory on-line detection device, and belongs to the technical field of non-destructive detection. The steel wire rope magnetic memory on-line detection device includes two groups of three-dimensional magnetoresistive sensors, adders, multipliers and subtracters, the two groups of three-dimensional magnetoresistive sensors are mounted on a steel wire rope and have the same mounting direction, and each group of three-dimensional magnetoresistive sensors comprises 8-12 three-dimensional magnetoresistive sensors uniformly distributed at a same circumference. An equilibrium and differential detection method is adopted to mainly aim to overcome steel wire rope shaking and outside interference, secondary output of signal characters is carried out, and the accuracy for judging metal member defects is improved; secondly, with adopting of a component signal single output method, whether a point is a steel wire rope defect is judged according to characteristic signals singly outputted by a normal component and a tangential component; and then, the two groups of annular uniformly-arranged three-dimensional magnetoresistive sensors HMC1053 are adopted to achieve all-dimensional inspection of the normal component and the tangential component of the steel wire rope, so as to eliminate the measured blind area problem.

An intelligent indoor light intensity control system and a working method thereof are used for automatically adjusting the light intensity in the home. The system can automatically cause an indoor light adjustment device and an indoor auxiliary lighting device to adjust the indoor light. The system adopts two adjusting devices which are jointly combined, and makes full use of external natural light, which enables the whole system to be high in adjusting speed and low in energy consumption. As the parameter, outdoor light intensity feedback, is added, and the adjustment process is reasonably arranged, redundant operation is avoided, and the work efficiency of the whole system is high. The invention further discloses a working method of the intelligent light intensity control system. According to the method, a control device is effectively adjusted and controlled according to the outdoor light intensity, the indoor light intensity and a set light intensity threshold so as to enable the indoor light intensity to reach the set threshold.

The invention relates to a laser screen making machine and belongs to the technical field of machinery. The laser screen making machine solves the problem of the existing laser screen making machine cannot realize effective heat dissipation of a laser. The laser screen making machine comprises a heat-conducting plate for mounting a laser. The heat-conducting plate is provided with refrigerating sheets on its backside. Refrigerating surfaces of the refrigerating sheets tightly cling to the heat-conducting plate and heating surfaces of the refrigerating sheets are provided with radiators with cooling fans on their sides. The laser screen making machine conducts the heat of the laser to the heat-conducting plate and then reduces the temperature through the thermoelectric semiconductor refrigeration sheets. The laser screen making machine also can effectively conduct the heat of the laser out through the radiator and the fans to effectively reduce the working temperature of the laser and ensure the working stability of the laser.

The invention belongs to the technical field of steel reinforcement corrosion monitoring, and relates to a method for optical fiber sensing monitoring of steel reinforcement corrosion. The method comprises the following steps: making an optical fiber sensing monitoring device, and monitoring the steel reinforcement corrosion condition. A strain measuring grating and a temperature compensation grating are laid in the same step manner, the optical fiber sensor monitoring device and a monitored steel reinforcement are simultaneously poured in a concrete structure to avoid external interference and damages to a corresponding variable fin, the step-shaped optical fiber sensor monitoring device can monitor the corrosion condition of the steel reinforcement with different depths in the concrete structure, the corrosion time and the corrosion degree of the steel reinforcement with different depths are analyzed to know the corrosion time and the corrosion degree of a steel reinforcement to be monitored in the reinforced concrete structure, and bolts with different lengths are selected to control the inclination of the optical fiber sensing monitoring device to realize the real-time and long-term online monitoring of the steel reinforcement corrosion in the concrete structure with different protection layer thicknesses. The method has the advantages of enlargement of the application range, scientific and reliable principle, and accurate and reliable monitoring result.

A interference-free transmitting receiving earset includes a housing houses a speaker, a grille covering the speaker and having a front center tube, and two microphones mounted in the center tube of the grille in reversed directions to pick up sound waves from the user's external auditory canal and wound waves from the speaker respectively and to eliminate interference of sound waves from the speaker with sound waves produced by the user in the external auditory canal.

A system of a machine includes a network of a plurality of sensing / control / identification devices distributed throughout the machine, each of the sensing / control / identification devices associated with at least one sub-system component of the machine and operable to communicate through a plurality of electromagnetic signals. The system also includes shielding surrounding at least one of the sensing / control / identification devices to contain the electromagnetic signals proximate to the at least one sub-system component. The system further includes an electromagnetic sensing system to read the plurality of electromagnetic signals for detection of at least one condition of the sub-system component of the machine. The system yet further includes a remote processing unit operable to communicate with the network of the sensing / control / identification devices through the electromagnetic signals.

The invention relates to a fish functional ethology device which comprises a round water tank; the inner part of the round water tank is separated into a plurality of swimming lanes; the bottom of the round water tank is provided with a water outlet hole; an annular water pipe is erected on the inner wall of the round water tank; the water inlet of the annular water pipe is communicated with the water outlet pipe of a circulated frequency conversion water pump; the water outlet of the annular water pipe is communicated with a vertical water pipe outside the tank; the annular water pipe is provided with a plurality of water outlets; each water outlet is externally connected with a branch water outlet pipe; the pipe wall of the branch water outlet pipe is uniformly provided with a plurality of small holes which are transversely arranged and matched with each swimming lane; the upper edge of each detachable annular partition board is provided with a plurality of triangle-shaped water discharge opening; and the annular pipe is provided with a light belt for providing uniform light. The fish functional ethology device can meet the demand of the behavioral research of various types of fish; various types of ethology experiments are carried out, and the device is suitable for different sizes of fish to realize automatic circulation of water current; and the device saves manpower and financial resources, and the integral utilization efficiency is high.

The invention provides a detection method of a shadow defect of a light guiding plate. Contrast is enhanced, salt and pepper noises are suppressed, filtering is carried out, two times of convolution are carried out, normalization of grayscale values is carried out, then two times of mean filtering are carried out, threshold segmentation processing is carried out, a connected domain of a foregroundimage is extracted, a connected-domain feature is processed, then the shadow defect is obtained, and the extracted shadow defect is displayed. According to the self-adaptive detection method of the light guide plate provided by the invention, complexity is relatively low, and automatic detection and extraction on a shadow of the light guide plate can be realized. An experiment result shows that detection accuracy and detection efficiency of the algorithm are higher, stability is higher, and the shadow can be detected in real time.

An improved sprinkler has a flow altering device to change water direction and control the direction of a blade wheel. A gear set causes a sprinkler head's repetitive rotation. The sprinkler head includes a set of corresponding upper plate and lower plate to divide an interior chamber of the sprinkler head to two chambers: a control chamber and a gear chamber. A water inlet pipe connects only with the control chamber to provide water to enter the control chamber. The upper plate and the lower plate form a filtering channel interconnecting between the control chamber and the gear chamber. The water from the control chamber can flow into the gear chamber through the filtering channel. The filtering channel filters the large / coarser particle debris in the water and the water flowing into the gear chamber can lubricate and cool the gear set in the gear chamber.

The invention discloses a full-optical fiber type super-resolution imaging method and device. The full-optical fiber type super-resolution imaging method comprises the following steps: combining excited light and Gauss loss light into one beam, and conducting the beam into a raster type optical fiber light vortex converter through a light vortex optical fiber; converting the Gauss loss light intolight vortex loss light from the beam by using the raster type optical fiber light vortex converter, and maintaining spatial distribution of the excited light; focusing the light vortex loss light andthe excited light to a sample through an optical fiber micro-lens; controlling the intensities of the excited light and the Gauss loss light, and acquiring fluorescent excitation smaller than a diffraction limit; collecting the excited fluorescent light through the optical fiber micro lens; exploiting intensities of corresponding excited fluorescence in different positions of the sample, therebyobtaining super-resolution images of the sample. By adopting the method, by improving the flexibility and the integration of a conventional STED (Super-Resolution Imaging Device), the STED can be applied to endoscopy super-resolution imaging of a microscopic scale.

The invention discloses a device and a method for online monitoring SF6 circuit breaker fault type, which comprises a laser emission module, a photoelectric detection module, and a data processing / transmission module, wherein the laser emission module is a narrow linewidth laser; the photoelectric detection module is composed of a gas absorption chamber on each branch; and the data processing / transmission module is divided into a time division multiplexing method structure and a wavelength division multiplexing method structure. An operating method comprises a time division multiplexing methodand a wavelength division multiplexing method. The device and method for online monitoring SF6 circuit breaker fault type has the advantages that the existing SF6 gas insulated circuit breaker can bedirectly changed, the device is simple in structure, and is economical and efficient, convenient in installation and maintenance., high in detection precision, quick in response, high in accuracy, and anti-magnetoelectric interference. The invention can be widely used for monitoring and early warning of insulation conditions in SF6 gas insulated circuit breakers.

The invention discloses a method for temporary culture, egg laying and egg protecting of octopus variabilis sasaki and a device for the method, wherein the method comprises steps of 1 selection of parents, 2 temporary culture and accelerated ripening of parents and 3 egg protecting of the parents, and an octopus nest which is specifically designed is used. The method for temporary culture, egg laying and egg protecting of the octopus variabilis sasaki is simple in operation, the device for the method is low in cost and high in use rate, can effectively increase survival rate and egg laying amount of the parents of the octopus variabilis sasaki, hatching rate of fertilized eggs and healthy degree of young seedling. The octopus nest simulates a natural nest structure of the octopus variabilis sasaki, is more suitable for actions of patient octopus variabilis sasaki such as hiding, defensing and laying eggs and protecting eggs and the like, and is simple in making, convenient to use, less in investment and excellent in effects.

The embodiments of the present invention disclose a speech control circuit and method for electrical equipment, wherein the electrical equipment integrates a speech recognition device. The speech control circuit comprises a detection circuit and a control circuit; the detection circuit is used for sensing a human body in real time, generating sensing information, and generating a speech recognition startup instruction when detecting that the sensing information satisfies a set startup rule; and the control circuit is used for controlling the speech recognition device to be started according to the speech recognition startup instruction. According to the speech control circuit and method for the electrical equipment provided by the embodiments of the present invention, the speech recognition device is only started under the control of the speech control circuit, and is in a turned-off mode or a sleep mode in other time, and therefore, the power consumption of the electrical equipment can be greatly reduced, the speech recognition device can be started automatically and intelligently, interaction efficiency is improved, a speech interaction process is simplified, the problem of false wakeup or false startup caused by the appearance of keywords in the normal conversation of a user can be solved, and the user can be assisted to fast and conveniently control the electrical equipment in a user-friendly manner through speech, and the interactive experience of the user can be improved.

The invention discloses an automatic titration device for detecting the color change of a solution based on machine vision, which includes a housing, a detection platform and a titration cup arranged in the housing, and a machine vision device for receiving The image signal of the color change of the solution, and the image signal is converted into a digital signal; the titration component is used to titrate the titrant in the titration cup; the stirring device includes a stirring piece for stirring the solution to be tested, and also includes an image Feedback device, a speed regulating device that drives the stirring member to stir, the image feedback device is connected to the speed regulating device signal to adjust the stirring speed of the stirring member; industrial control device, used to control the machine vision device, The titration component and the stirring device work, and receive the digital signal of the machine vision device to calculate the composition of the test product in the titration cup. The device provided by the invention can detect the composition parameters of multiple grains at one time.

The invention discloses a chip embedded-type encapsulation structure with a reinforcing structure and an encapsulation method of the same, which belong to the technical field of semiconductor encapsulation. The chip embedded-type encapsulation structure with the reinforcing structure comprises chip single bodies and a thin film encapsulating body, wherein one or more than one chip single bodies are embedded from the back face into the thin film encapsulating body, the upper surfaces of the chip single bodies and the upper surface of the thin film encapsulating body are covered by an insulated thin film layer I, an opening of the insulated thin film layer I is disposed in the upper surface of a chip electrode, a re-wiring metal layer is formed on the upper surface of the insulated thin film layer, the re-wiring metal layer is respectively electrically connected to the chip electrodes, an input end / output end is disposed on the outmost layer of the re-wiring metal layer, a connecting part is formed at the input end / output end, and the back face of the thin film encapsulating body is equipped with a silicon substrate reinforcing plate. The encapsulation method disclosed by the invention reduces thicknesses of products, increases product reliability and realizes the multi-chip encapsulation structure through wafer-level technological forming.

The invention relates to a screen making method of a digital printing imitating flat screen, and belongs to the technical of laser screen making, aiming at solving the problem of poor precision of laser screen making in the prior art. The screen making method of the digital printing imitating flat screen comprises the following steps: (1) carrying out color separating by virtue of a computer; (2) converting an image formed by color separating into a pixelated dot matrix set, wherein the dot matrix set is formed by combining a plurality of strip-shaped dot matrix sets which are fixed in width; (3) converting the processed dot matrix set image into a pulse signal, and conveying the pulse signal to a driver, wherein the driver can drive the opening and closing of a laser solid matter in a laser device; (4) stretching and prefabricating, and regulating the lens focus length of the laser so as to focus laser light on the flat screen; (5) starting a servo device on the stand, and driving the laser device to carry out laser dotting according to a preset dot set position; (6) developing and washing the flat screen obtained from laser screen making; and (7) trimming and banding the screen, and completing curing. The screen making method of the digital printing imitating flat screen disclosed by the invention has the advantages of high precision and high definition.

A method and a system for near field communication of an electronic device are disclosed. The method comprises: communicating frequency points at which the two parties suffer from interference with a second electronic device through a scanning frame, wherein the scanning frame comprises at least two symbols modulated by using different frequencies; and determining a modulation manner according to the available frequency points in order to perform data transmission with the second electronic device. With the embodiment of the present invention, interference frequencies in the communication environment are detected by sending the scanning frame which comprises at least two symbols modulated by using different frequencies, and frequency points with smaller interference are selected for adaptation modulation data, thus the interference frequency points are shielded from data transmission, and external interference in the near field communication is avoid, and communication stability is improved, and communication quality is improved.

The present invention provides a wire connector that does not cause malfunction and has good operability. The electric wire connector installs the cover (70) on the box (11) formed by the housing (20) and the base (50), and houses the head (63) of the operating rod (60). Then, the cover (70) is provided with an opening operation hole (74) capable of pressing the head (63) of the operation lever (60) in the connected state toward the axial direction. Furthermore, an elongated hole (76) for wiring is provided between the case (11) and the cover (70) so that the head (63) of the operating lever (60) in the open state can be operated.

The invention discloses a train through passage sound insulation property testing method based on a reverberation room and an anechoic room, and belongs to the field of the sound insulation property measurement method of a rail train through passage device. The method comprises the following steps that: firstly, constructing a joint acoustical laboratory which is big enough to contain a tested train through passage and comprises the reverberation room and the anechoic room, giving a specific anechoic room construction index, definitely giving the specific arrangement positions of a non-direction sound source used for generating reverberation field stimulation and three reverberation field microphones, definitely giving the layout position and the sound insulation property index parameter of a sound insulation plugging tool, and also giving an empirical formula used for calculating a train through passage sound insulation amount under the environment of the reverberation room and the anechoic room. By use of the method, in virtue of the insulation function of the anechoic room for environment noise, external disturbances are avoided, the accuracy of acoustic data is greatly improved, and the data analysis and calculation of the train through passage sound insulation property testing method based on the environment of the reverberation room and the anechoic room can be implemented.

The invention discloses a dish washing machine and a liquid level measurement device and method thereof. The liquid level measurement device comprises an electrode module, a shielding module, a capacitive to digital conversion module and a processing module. The electrode module is mounted outside a container and comprises a liquid level pair and a reference liquid sensing electrode pair, the liquid level sensing electrode pair comprises a liquid level sensing electrode and a first grounding electrode, and the reference liquid sensing electrode pair comprises a reference liquid sensing electrode and a second grounding electrode; the shielding module comprises a first shielding electrode and a second shielding electrode, the capacitive to digital conversion module conducts differential potential driving on the liquid level sensing electrode and the first shielding electrode and the reference liquid sensing electrode and the second shielding electrode respectively, and a liquid level sensing capacitance and a liquid level measurement unit capacitance are obtained; the processing module calculates the liquid level height according to the liquid level sensing capacitance and the liquid level measurement unit capacitance. According to the dish washing machine and the liquid level measurement device and method, a non-contact mode is adopted to avoid pollution, the shielding electrodes are added so that anti-phase compensation measurement can be conducted, and external disturbance is avoided.

The invention discloses a submerged buoy type acoustic signal acquisition and storage system which comprises an underwater acoustic transducer (1), an underwater electronic cabin (2), an acoustic signal acquisition and storage circuit (3) and a power supply (4). The underwater acoustic transducer (1) is connected with the underwater electronic cabin (2), the acoustic signal acquisition and storage circuit (3) and the power supply (4) are arranged in the underwater electronic cabin (2), the underwater acoustic transducer (1) outputs signals to the acoustic signal acquisition and storage circuit (3), the acoustic signal acquisition and storage circuit (3) is connected with a personal computer, and the power supply (4) supplies power to the underwater acoustic transducer (1) and the acoustic signal acquisition and storage circuit (3). The submerged buoy type acoustic signal acquisition and storage system has the advantages of being easy to operate, reliable in performance and large in data storage size.

The present invention discloses a backlight driving board for driving a backlight source, comprising a microprocessor and a constant current driver chip. The microprocessor receives a display mode switching signal and a synchronization signal from a liquid crystal driving board, and generating a first pulse width modulation signal corresponding to the backlight source according to the display mode switching signal and the synchronization signal. The constant current driver chip controls an operation state of the backlight source according to the first pulse width modulation signal. The present invention can reduce the signal lines between the backlight driving board and the liquid crystal driving board in order to avoid the backlight driving board from external interference because of too many signal lines, and thus be able to enhance the stability of the LCD device when operatin

The invention discloses a cartridge box with the automatic popup function, which comprises a box body and a drawer, wherein a box opening elastic member used for pushing out the drawer is arranged between the box body and the rear part of the drawer; an electromagnet and a lock hook rotationally mounted in the box body and driven by the electromagnet are fixed in the box body; a locking piece matched with the lock hook is arranged at the rear part of the drawer; an oscillating rod for driving the lock hook to be divorced from the locking piece is also arranged at the rear part of the drawer; a mechanical lock is arranged at the front part of the drawer; a linkage rod for linking the mechanical lock and the oscillating rod is arranged in an interlayer between the box body and the drawer in a penetrating way; a first detection rod which is pressed by the drawer to move and a first photoelectric detection circuit used for sensing the movement of the first detection rod are also arranged in the box body; a communication interface circuit connected with the first photoelectric detection circuit is arranged at the rear part of the box body.

The invention provides a high-resolution light guide plate image defect detection method, including the following steps: the original picture of the light guide plate is collected, a light guide plateoriginal image is enhanced, a maximum inter-class variance method is used for threshold segmentation of that image enhancement image of the light guide plate, the connected domain is obtained from the threshold processing display graph, a light guide plate whole connected region is extracted with that lar area, a maximum area extraction graph is transformed into a shape, a light guide plate imageshape conversion map is adjusted in a gray value, the gray value adjustment map is partitioned, Gaussian bias is applied to the partition display image of the light guide plate, a mask process is performed on the Gaussian partial derivative display image, Fourier positive transform is carried out on the mask processing display graph, a sinusoidal shape band-pass filter is established, inverse Fourier transform is carried out on the convolution display graph, threshold treatment is carried out on the inverse Fourier transform display graph, the connected domain is obtained on the second threshold treatment display graph, defects are extracted on the second connected domain display graph, and defects are displayed.

The invention discloses a test method for a sound insulation property of a train body panel based on a vehicle semi-anechoic room environment, and belongs to the field of test method for sound insulation property of a rail transit vehicle body panel. The method comprises the following steps of: constructing a vehicle semi-anechoic room sufficient to accommodate the tested vehicle, using the relevant structural subsystems with similar vibration mode groups such as the floor, the roof, the side wall, the door, the window and the windshield of a rail passenger car as the test samples of the currently selected area, thereby respectively taking the samples as test targets, and completing the sound insulation property test on the vehicle body panel. The method does not need to produce special samples for each floor, roof, side wall, door, window and windshield, thereby saving the cost of sample production. The method has no damage to the vehicle itself, and can test all the sound insulationof the area of interest of the vehicle at one time.

The invention discloses a power amplifier external interface circuit. A triode Q2, a resistor R1, a resistor R2, a resistor R3 and a resistor R4 are connected, and an internal circuit and an external output port of the power amplifier external interface circuit are effectively isolated by using the breakover characteristic of the triode, so that the interface internal circuit is well protected, reverse threshold voltage is improved through the triode and an input divider resistor, the security of the power amplifier external interface circuit can be effectively protected, external disturbance is effectively prevented, the reliability of the power amplifier external interface circuit can be improved, and circuit security is ensured.