45results about How to "Accurate signal acquisition" patented technology

The utility model relates to a hydraulic cylinder device and a hydraulic cylinder behavior control system with same. The hydraulic cylinder device comprises a cylinder body, a piston and a piston rod, wherein the piston moves in the cylinder body, one end of the piston rod is connected with the piston, and the other end thereof extends out of the cylinder body; and a plurality of signal through holes which are longitudinally arranged along the cylinder body to divide a piston stroke into a plurality of stroke sections are formed on the wall of the cylinder body. The hydraulic cylinder device also comprises a plurality of pressure sensors arranged corresponding to the signal through holes. Compared with the prior art, the invention can conveniently meet the real-time monitoring of the preset section position of the total stroke of the piston, and has the advantages of low cost, good generality and strong anti-interference capacity, and is favorable for giving full play to the powerful data-processing operation capacity of an intelligent controller, and the like.

The invention discloses an accurate acquisition device and method of power frequency in audio forensics, which belongs to the technical field of acquisition of the power frequency. The acquisition device comprises frequency acquisition points and an upper computer, wherein each frequency acquisition point comprises a precise voltage transformer depressurization module, a signal conditioning module, an anti-alias filter module, a singlechip and a wireless communication unit; and the upper computer is in wireless connection with the frequency acquisition point through the wireless communication unit. The acquisition method comprises the following steps of: (1) distributing the frequency acquisition points in each acquisition cell; (2) putting data obtained through sampling into a buffer memory for buffering; (3) transmitting to the upper computer through the wireless communication unit; (4) putting the received data into a DMA (Direct Memory Access) buffer area through the upper computer, and carrying out frequency calculation; (5) transmitting the data to a database server; and (6) storing the data to the database server. According to the acquisition device and method, power frequency signals can be accurately converted and stored, and a prefecture level power frequency database is quickly established.

The invention belongs to the field of material transport and transfer related equipment and discloses a curved-surface deformation manipulator facing to flexible-film transfer. The curved-surface deformation manipulator comprises a linear drive assembly, a seal assembly, an air pressure assembly and an adjustable sliding assembly; the linear drive assembly is used for providing for up-down drive displacement and is a main drive mechanism that forms a free curved surface; the seal assembly comprises an upper connecting plate, a lower connecting plate, a sealing film, a breathable film and the like and cooperates with the air pressure assembly to form a positive pressure chamber and a negative pressure chamber, and function of the manipulator in adsorbing and releasing a flexible film sequentially is correspondingly realized; the adjustable sliding assembly is used for adjusting relative positions among multiple linear actuators. Accordingly, the entire process that the flexible film is transferred to the target curved surface form a plane substrate can be efficiently realized; the curved-surface deformation manipulator has the advantages of compact structure, convenience in control, high precision, less damage to the film and the like, and more adaptability and free adjustment capacity are achieved in formation of the free curved surface.

An array of spatially-separated optical detectors is configured to receive a free-space optical communication signal from a remote source. Each optical detector of the array includes an optical system and an array of light sensors. The optical system collects a portion of light received from the remote source and directs it toward the array of light sensors. The array of light sensors, in turn, converts the collected portion of light to one or more electrical, detected signals corresponding to the collected portion of light. A processor is coupled to the array of spatially-separated optical detectors, receiving the detected signals and combining the received signals to obtain information borne by the received optical communication signal.

The invention relates to a gas drilling shaft bottom near-bit continuous impact focus nipple, comprising a nipple body, a cylinder body, a piston (3) and a gas distribution device, wherein the cylinder body is arranged in a shell (1), the piston (3) is arranged in the cylinder body, a lower gas inlet passage (8) is formed between the cylinder body and the shell (1), a lower gas chamber (2) is formed between the lower end of the piston (3) and the inner wall of the shell (1), the lower gas inlet passage (8) is communicated with the lower gas chamber (2), an upper gas inlet passage (9) is formed at the bottom (7) of the cylinder body, an upper gas chamber (6) is formed between the upper end of the piston (3) and the cylinder body, the upper gas inlet passage (9) is communicated with the upper gas chamber (6), and the gas distribution device is arranged at the upper part of the cylinder body. According to the focus nipple, a focus in seismic exploration is applied to a shaft bottom near a bit, a focus linear (Chirp) scanning technology can be combined with a Mini-SOSIE technology, and the focus excites the ground to generate linear scanning pulse signals through a pulse coding technology, so that the excitation quality of seismic wave is improved.

The invention discloses a detection method and system for an elevator load. The method comprises the steps of taking a no-load signal and a rated load signal of an elevator as reference signals; obtaining the real-time load signal of the elevator; respectively comparing the values of the reference signals and the ream-time load signal; and determining the load condition of the elevator according to the comparing result of the reference signals and the real-time load signal of the elevator. The system comprises a storage unit, a real-time load signal acquiring unit, a comparing unit, an analysis unit and an output unit; the storage unit and the real-time signal acquiring unit are electrically connected with the comparing unit respectively; the comparing unit is electrically connected with the analysis unit electrically connected with the output unit. By adopting the detection method and system for the elevator load, the real-time load signal of the elevator is more accurate, the load condition of the elevator judged according to a logic operation result by comparing the elevator real-time load signal, the elevator no-load signal and the elevator rated load signal more accords with real condition, and the safety of the elevator operation is higher.

The invention discloses a straw baling test platform which comprises a power transferring system, a baling device, a controller, a material conveying device and a hydraulic lifting system, wherein thepower transferring system comprises a first driving device; a torque sensor is connected between an output shaft of the first driving device and a power input shaft; a tension and pressure sensor isarranged on a connecting rod; a piston end face pressure sensor is arranged on an end face of a piston; plate type pressure sensors are arranged on all the walls of a compression chamber and a balingchamber; the torque sensor, the tension and pressure sensor, the piston end face pressure sensor and the plate type pressure sensors are all in signaling connection with the controller; the material conveying device is used for conveying the straws to a pickup device; the hydraulic lifting system is used for lifting a frame and idler wheels of the baling device. The straw baling test platform is capable of comprehensively and accurately collecting the signal, supplying a detailed base data for the research on the crop straw baling operation and supplying a more practical test data for crop straw baling.

The invention provides a sleep detecting device and belongs to the technical field of smart home. In the embodiment, the sleep detecting device comprises a sensor unit, a signal conditioning circuit and a signal processing circuit. The sensor unit comprises a sensor placed below a human body and acquires a pressure signal during sleeping of the human body, the signal conditioning circuit amplifiesand filters the pressure signal, and the signal processing circuit calculates an output signal of the signal conditioning circuit so as to obtain sleep condition data. By adopting the embodiment, thesleep state of a user can be accurately detected, response is quick, the precision is high, the sleep detecting device is comfortable to use, and user experience is improved.

The invention discloses a multi-parameter sensing bin for oceans. The multi-parameter sensing bin is provided with three optical fiber Fabry-Perot interferometer cavity structures which are connectedin series, parameters such as temperature, pressure, salinity and the like of a seabed point to be measured can be simultaneously measured, that is, multi-parameter measurement can be performed. Basedon the high sensitivity of the Fabry-Perot interferometer, the high-precision measurement can be realized, the planning is reasonable, the structure is compact, the stability is good, the manufacturing and maintenance cost is low, and compared with the traditional measurement mode, the method has more advantages and has better application prospect. Meanwhile, the invention provides a multi-parameter monitoring method based on the submarine optical cable. The sensing bin is used as a platform to monitor multiple physical parameters of the ocean on line in real time and can adapt to the complexocean environment of the seabed, the submarine optical cable has the dual functions of communication and power supply, high-speed signal return and continuous power supply can be provided for a sensing system. In addition, the optical cable is wide in distribution, and distributed monitoring is more beneficial to achieving networked monitoring. Meanwhile, the manufacturing method is easy to implement, and it can be guaranteed that signals acquired by an external sensing module interferometer are accurate.

The invention discloses a direction control device of an intelligent exercise bicycle. The device comprises a handle chuck combination, a rotating shaft combination, a fixed seat combination, a rotating piece combination, a first torsional spring and a second torsional spring, wherein the rotating shaft combination comprises a fixed part and a rotating shaft; the handle chuck combination is pivoted with the rotating shaft combination; the first torsional spring is arranged at the pin jointing part of the handle chuck combination and the rotating shaft combination; the fixed seat combination is sleeved in the rotating shaft; the rotating piece combination is fixedly arranged at the tail end of the rotating shaft; the second torsional spring is sleeved in the rotating shaft and located between the fixed seat combination and the rotating piece combination; a downward first convex column is arranged in the fixed seat combination; an upward second convex column is arranged on the rotating piece combination; the first and second convex columns are arranged between two outward bended ends of the second torsional spring side by side. The direction control can provide a 360 degrees all-around steering action, can be reset immediately after a steering force is eliminated, and has the characteristics of simplicity in manufacture, low manufacturing cost, easiness in realization, accuracy of collected signals, high sensitivity and convenience in operation.

The invention discloses a multi-frequency impedance imaging system. The system mainly performs imaging according to different impedances displayed by biological tissue under various frequencies. The system comprises a data collecting card, a voltage to current circuit, a multi-way switch circuit, a to-be-tested object, a signal amplification circuit and a computer. The system is of a virtual instrument structure and is formed by combining a LabVIEW platform with the data collecting card and pheripheral hardware, the data collecting card with the high precision is used, the system testing precision and stability are improved, the advantages of flexibility and convenience of the virtual instrument technology building system are brought into full play, and the system is convenient to expand. Drive signals adopt mixing signals stacked by multiple frequency sinusoidal signals, the multi-frequency signals are injection into a physical model at a time, measured voltage signals are processed to obtain voltage information under each frequency, and therefore the system imaging speed is increased.

The invention discloses a portable electroglottograph speech collecting device for far-field human-computer interaction. In far-field speech human-computer interaction, through the complex combinationof software and hardware and an artificial intelligence algorithm, the effects of background noise, reverberation, echo and the like can be effectively solved in a complex environment. Glottal excitation information is obtained by using electroglottograph, thus a target speech is separated, the noise influence during a transmission process can be effectively removed, and the interference betweendifferent kinds of information is removed. The portable electroglottograph speech collecting device comprises a signal collecting portion, a signal processing portion and a signal transmitting portion. The electroglottograph speech collecting device of the invention has a simple structure and is convenient to carry, high-frequency weak voltage is used, the signal acquisition is more accurate, thedevice can cooperate with other devices, speech features can be extracted well, the influence of noise on a speech when the speed is transmitted in the air is reduced or avoided, and the portable electroglottograph speech collecting device has high detection accuracy and wide application.

The invention provides a light-operated electronic lock. The light-operated electronic lock comprises a body, and a control module, a motor, a transmission mechanism and a locking head in the body, wherein a photosensitive receiving module is arranged on the body; a light transmitter is matched with the photosensitive receiving module and comprises a portable box, a LED lattice screen and a control unit; and the configuration manner and space of light sensors on the photosensitive receiving module are identical to the configuration manner and space of LED lights on the LED lattice screen. Thelight emitter is inserted into the photosensitive receiving module; the module compares whether a pattern or text presented by the lattice screen is correct as a secret key, and controls the direct-current motor to rotate if the secret key is correct; so the locking head can retract into the body, thereby realizing unlocking.

A signal acquisition method of the rotation angle of a rotating member with a V-shaped notch includes: the V-shaped notch area where the V-shaped notch area of the rotating member (5) is arranged is defined as a blind area (3), a magnetic grid scale (2) is stuck on the periphery of the rotating member with the V-shaped notch and is provided with scale marks, a main positioner (4) and an auxiliary positioner (8) are symmetrically arranged on both sides of the magnetic grid scale, the main positioner is used for fixing a main magnetic grid sensor (1), the auxiliary positioner is used for fixing an auxiliary magnetic grid sensor (7), and the main magnetic grid senor and the auxiliary magnetic grid sensor are configured in a 180-degree symmetry mode. The complementary magnetic grid sensors can subject the magnetic grid scale on the rotating member with the V-shaped notch to signal acquisition, so that the monitoring of the rotation angle of the rotating member with the V-shaped notch can be achieved, and the signal acquisition is accurate and reliable. The signal acquisition method of the rotation angle of the rotating member with the V-shaped notch has a great assisting effect on controlling the rotation angle of the rotating member with the V-shaped notch through a computer and is particularly significant to super-huge type and rotation-angle precision-required rotating members with V-shaped notches.

The invention provides a bone conduction microphone which comprises a vibration collector, a pressure sensor and a signal processor; the vibration collector comprises a signal collection part and a signal transmission part; the signal transmission part is in contact with the pressure sensor; and the signal transmission part can transmit signals collected by the signal collection part to the pressure sensor. The bone conduction microphone has the beneficial effects that: as sound signals can be directly transmitted to the signal sensor through the signal transmission part, problems such as signal lag and signal inaccuracy caused by a traditional airbag which transmits the sound signals through air are avoided; signals can be collected more precisely and signal error caused by air leakage of a vibration cavity can be reduced or removed; the bone conduction microphone is more beneficial to signal collection and data analysis, the data are more precise, calculation of the collected data can be finished by using fewer processor resources, and the data error and power consumption are reduced; and collection of sound source signals is realized more precisely.

The invention discloses a full-automatic locking intelligent ground lock and a control method thereof, and belongs to the technical field of ground lock control. To solve the problems that in the prior art, a mechanical ground lock needs to be manually operated to get off a vehicle, a ground lock with Bluetooth remote control needs to carry a remote controller, the operation mode is complex, muchtime is consumed, and the portability is not enough, the invention provides an intelligent ground lock which comprises a ground lock device, a first sensor, a second sensor, a wireless module, a control module and a power module. The first sensor, the second sensor and the wireless module send signals to the control module, and the control module controls the ground lock device according to the received signals. Through comparison detection of the microwave mobile sensor module and the infrared sensor module, the judgment result of the infrared sensor module is more accurate. The device is a full-automatic device, and a ground lock does not need to be manually or remotely controlled. A car owner can park and take a car conveniently, and car parking and taking time is shortened.