33results about How to "Increase the maximum distance" patented technology

A medical device module for use in a system with a remote programmer and / or a personal data assistant (PDA) with at least one medical device includes a housing, at least one medical device and a processor. The housing is adapted to couple with the PDA. The at least one medical device interface is coupled to the housing for interfacing with the at least one medical device. The processor is coupled to the at least one medical device interface to process data from the at least one medical device. The processor is also capable of interfacing with the PDA.

The terminal device of the present invention comprises a transmitting means for transmitting, to a contact-less IC medium, commands and carrier signals used for receiving responses, a receiving means for receiving responses from the contact-less IC medium, and a controlling means for controlling at least one of the transmitting means and the receiving means so as to adjust a maximum distance at which the terminal device can communicate with the contact-less IC medium. The terminal device firstly transmits an inquiry request command from the transmitting means to the contact-less IC medium, and receives an inquiry request response to the transmitted inquiry request command at the receiving means from the contact-less IC medium. Then, the terminal device transmits a data processing command from the transmitting means to the contact-less IC medium, and receives a data processing response to the transmitted data processing command at the receiving means from the contact-less IC medium. The maximum distance at which the terminal device can receive the data processing response is greater than the maximum distance at which the terminal device can receive the inquiry request response.

A radio-frequency identification tag communication device including a BFA weight-value setting portion operable to control a directivity of a transmitter antenna, and an adaptive processing portion operable to implement an adaptive control of a weight to be given to a received signal received by each of a plurality of antenna elements, on the basis of a reply signal transmitted from a radio-frequency identification tag, so that the directivity of the transmitter antenna is changed to a direction in which the frequency identification tag in question is expected to exist, and the weight to be given to each received signal is subjected to the adaptive control, whereby the sensitivity of communication of the communication device with the radio-frequency identification tag is improved.

A signal generation system suitable for use in a radar system comprises a local oscillator (LO) and an intermediate frequency IF oscillator, wherein the IF oscillator is a Direct Digital Synthesiser, and the LO is a free runn ing oscillator not itself locked to another oscillator but which acts as a c lock reference for the DDS and is the highest frequency oscillator in the sy stem. The LO may also act as a reference for a receive chain digitiser. The invention exploits phase noise advantages of a free running oscillator at so me distance from the carrier whilst maintaining coherency with other system components. The system typically finds application in FMCW radars.

The invention discloses an ultra wideband stratum communication system which is mainly used for solving the problem that no reliable communication means can be taken when a serious accident occurs in a mine well. The ultra wideband stratum communication system comprises two transceivers, a pair of transmitting and receiving common electrodes and a transmitting and receiving changeover switch, a wireless channel is formed through the electrodes by using a stratum as a transmission medium so as to further form a time division duplex communication system. Each transceiver comprises transmitting equipment and receiving equipment, wherein the transmitting equipment comprise a channel coding unit, an M-element spectrum spreading unit and an E-class power amplifier; the receiving equipment comprise a low noise amplifier, a level-isolating straight-coupling capacitor, an AGC (Automatic Gain Control) amplifier, an A / D (Analog to Digital) converter and a dispreading, demodulating and channel decoding unit. A ternary pseudo random code with chip value of -1 or 0 or 1 is taken as an M-element spectrum spreading code, and a push-pull power amplifier with an output transformer is used as the E-class power amplifier. The invention has the advantages of small signal duty ratio, high peak-to-average power ratio, good error code characteristics and long transmission distance, and can provide a reliable communication means for mine well disaster relief.

The invention discloses a rotation detection device. The device comprises a tray which rotates around an axis, and a rotation detection module which is located above the tray and is fixed. An upper surface of the tray is in a partial metallization state; the rotation detection module comprises an excitation circuit, a PCB coil and a signal processing circuit which are connected in sequence; the PCB coil comprises an exciting coil which is parallel to an upper plane of the tray and whose a circle center is positioned on the axis, and a plurality of induction coils which are circumferentially arranged in the exciting coil at equal angles; opposite angles of the plurality of induction coils are matched in pairs; and the signal processing circuit comprises a switch amplifying circuit and a sampling circuit connected to a sampling end of the switch amplifying circuit, and one end of each induction coil is connected to an input end of the switch amplifying circuit. The switch amplifying circuit can amplify induction signals of the induction coil, and the maximum distance between the upper plane of the tray and the PCB coil plane is increased.

A method for providing hearing assistance to a user by capturing input audio signals; estimating a speech level of the input audio signals and an ambient noise level of the input audio signals; applying a gain model to the input audio signals to transform the input audio signals into filtered audio signals, wherein, for a each ambient noise level, the gain varies as a function of the speech level and wherein the function varies according to the ambient noise level changing the ratio of the gain at low speech levels and at high speech levels as a function of the ambient noise level; wirelessly transmitting the filtered audio signals to a receiver unit forming or being connected to a user hearing stimulator, the stimulator being worn at or in the user's ear; and stimulating the user's hearing by the stimulator according to audio signals supplied by the receiver unit.

The invention provides a method for controlling stepped motor in a track jumping operation for short track width in an optical storage system, wherein the optical storage system also includes an optical reading head and an object lens group, the method comprises calculating the number of steps wherein the step motor rotation is one, moving the object lens group to a target trajectory, using the step motor to move the optical reading head to a destination location.

Bolt-type coupling system for pipes, in which by means of the new geometry of the support element, improvement is achieved in the mechanical features of the connection. The improvement is evaluated by means of increasing the admissible work pressures and traction stress while keeping constant the thickness of the pipe wall. Using the support element can be carried out by applying a weld bead and subsequent machining, making use of a backup ring for the placement of the weld bead and finally, made jointly in the casting process.

The invention discloses a humidity detection and wireless short range alarm method. The method includes a detection step, a data processing step, a wireless connection step, a wireless connection control step, a wireless transmission step and a data display and alarm step. According to the invention, a wrist band and / or cell phone is in wireless connection with a 2.4G wireless module and / or BLE Bluetooth module of at least one humidity detector. Monitoring is performed through the wrist band and the cell phone at the same time. Besides, the wrist band and / or the cell phone can be connected to a plurality of humidity detectors at the same time wirelessly. Wireless signal connection is more stable and use convenience is improved. Especially in night use, only a specific person can be woken up and other people are not disturbed; sleep of other families is not affected.

A video surveillance system includes a first combiner, and a monitor, a power source and a camera control unit, each of which is electrically coupled to the first combiner. A regulated combiner located remotely from the first combiner and being electrically connected to the first combiner with at least one twisted pair of wires includes a voltage regulator which provides a regulated voltage to the camera located remotely from the first combiner. The camera is operable at a predetermined voltage level. The power supply provides an increased voltage to the regulated combiner through the first combiner and the twisted pair of wires to compensate for IR losses in the twisted pair of wires. Thus, the regulated combiner reduces the increased voltage to a safe level for the CCTV camera and other devices on a network to operate properly. The system dramatically increases the distance that a power supply can be located from where the camera is located, which decreases installation costs for CCTV surveillance systems.

The invention relates to a combined touch pad module, a touch signal integration method and a notebook computer. The combined touch pad module is used for a notebook computer and comprises a shell, a fixed touch pad module, a sliding touch pad module and a touch signal processing module, wherein the shell is provided with an opening; the fixed touch pad module comprises a fixed touch pad and a first signal generating module and is fixed on the shell, and when the fixed touch pad is touched, the first signal generating module generates a first touch signal; the sliding touch pad module comprises a sliding touch pad and a second signal generating module; in the case of withdrawing, the sliding touch pad is contained in the shell; in the case of use, the sliding touch pad is moved outside the shell through the opening and is connected with the fixed touch pad in a sliding mode, and when the sliding touch pad is touched in a use state, the second signal generating module generates a second touch signal; and the touch signal processing module is used for processing the first touch signal and the second touch signal to form an integration signal so as to control the notebook computer. The invention extends the operation range of the touch pads.

The invention discloses an efficient long-distance dredging method for an underground culvert and a dredging system thereof.The dredging system adopts a control algorithm constructed by the slurry concentration and the motor rotating speed, adjusts the motor rotating speed in real time according to the current slurry concentration, and comprises an underwater dredging robot, a transfer station and a control device; the desilting robot comprises a walking device, a desilting device arranged at the front end of the walking device, a power device used for providing power, a cooling device used for cooling the desilting device and the power device, and a sensing device in signal connection with the control device. By means of the mode, the dredging device is simple in structure, the maximum dredging distance is increased by arranging the transfer station, the rotating speed of the motor is adjusted in time according to the slurry concentration monitored on line, therefore, automatic variable-speed adjustment is achieved, it is ensured that dredging work is conducted smoothly, and the working efficiency is high and the working state is stable through the automatic control mode.

The invention provides a method for controlling stepped motor in a track jumping operation for short track width in an optical storage system, wherein the optical storage system also includes an optical reading head and an object lens group, the method comprises calculating the number of steps wherein the step motor rotation is one, moving the object lens group to a target trajectory, using the step motor to move the optical reading head to a destination location.

The invention relates to the field of carving machines, in particular to a carving machine for cup and vase inner wall carving. The carving machine comprises a bottom surface carving module (1) for carving internal bottom surfaces of containers, a side surface carving module (2) for carving internal side surfaces of the containers, an upper surface carving module (3) for carving internal upper surfaces of the containers, a module switching device (4) for switching the carving modules, and a bracket (5) for fixing the module switching device (4); the module switching device (4) is mounted on the bracket (5); and the bottom surface carving module (1), the side surface carving module (2) and the upper surface carving module (3) are mounted on the module switching device (4). Users can precisely and automatically carve the inner walls of the containers through equipment; and the carving machine is high in working efficiency and wide in application range.

The invention relates to a lamellar discharge valve for a discharge opening (4) in a housing (9) of a compression cylinder of a compressor. The lamellar discharge valve has a lamella (1) for opening and closing the discharge opening (4), a bridge (2) for limiting deformations of the lamella (1) in an open state of the discharge opening (4), and at least one securing element (3) for securing the bridge (2) to the housing (9) of the compression cylinder. The bridge (2) has a support surface (5), which faces the lamella (1) and has a specified curvature radius (gamma), in one region, and the lamella (1) is provided with at least one opening (6), which is designed to allow the securing element (3) to pass through the lamella (1) in order to secure the bridge (2) to the housing (8) of the compression cylinder.

The invention relates to the technical field of gynecological nursing, and discloses a dosage-adjustable gynecological nursing medicine applying device which comprises a shell, a medicine storage disc is fixedly connected to the periphery of the shell, a medicine measuring mechanism is movably connected to the inner wall of the shell, and the medicine measuring mechanism comprises a double-head piston. And quantity control bags are embedded in the positions, on the left side and the right side of the double-end piston, of the inner wall of the top of the shell, pressing plates extending to the quantity control bags are slidably connected to the top of the shell in an inserted mode, and quantity control rods are slidably connected to the side wall of the shell in an inserted mode. According to the gynecological nursing medicine applying device capable of adjusting the dosage, limitation of an L-shaped pin rod on the maximum displacement distance of a quantity control rod is changed by pressing and adjusting a telescopic tooth column, so that a double-head piston is braked after extracting quantitative liquid medicine, and a medicine applying rod which can be connected with gauze in a sleeving mode and receives the liquid medicine in a rotating mode is designed in a matched mode; therefore, the safety of the dosage of the nursing medicine is conveniently and effectively ensured, the waste of the liquid medicine is effectively avoided, and the nursing effect is enhanced.

A radio-frequency tag communication device including a receiver array antenna device for receiving a reply signal, a cancel-signal generating portion configured to generate a cancel signal for eliminating a leakage signal that is a part of a transmitted signal, which part is received by the receiver array antenna device, a cancel-signal control portion configured to control a phase and / or an amplitude of the cancel signal generated by the cancel-signal generating portion, and a received-signal combining portion configured to combine together received signals received by a plurality of antenna elements of the receiver array antenna device, to obtain a composite signal, and wherein the transmission of the transmitted signal and the reception of the received signals are concurrently controlled, and the cancel signal generated by the cancel-signal generating portion is applied to the received-signal combining portion, whereby the received signals and the cancel signal are combined together, so that a signal / noise ratio of a wave detector output upon demodulation of the composite signal is improved to increase the maximum distance of communication.

The invention provides ramming equipment for reducing rammed pipe wall resistance and a through ramming process thereof. The ramming equipment for reducing rammed pipe wall resistance comprises a cutting ring, a steel sleeve pipe, a grouting resistance reducing component, a ramming hammer and a track. The track is fixedly arranged on the ground, and therefore the steel sleeve pipe can be rammed onthe track in a cut stratum in the preset direction; the cutting ring is fixedly arranged at the front end of the steel sleeve pipe, the end, not connected with the steel sleeve pipe, of the cutting ring is provided with a groove used for cutting soil, the diameter of the cutting ring is larger than that of the steel sleeve pipe, and therefore an annulus is formed between the pipe wall of the steel sleeve pipe and the cut stratum; the ramming hammer is connected with the other end of the steel sleeve pipe and can apply ramming force to the steel sleeve pipe; and the grouting resistance reducing component is arranged in the annulus on the outer wall of the steel sleeve pipe and can pump slurry into the annulus so as to reduce friction resistance between the outer wall of the steel sleeve pipe and the cut stratum. The ramming equipment has the advantages that resistance produced in the pipe ramming process can be greatly reduced, and loss of ramming force is reduced.

A signal generation system suitable for use in a radar system comprising: a local oscillator (LO) and an intermediate frequency IF oscillator, wherein the IF oscillator is a direct digital synthesizer and the LO is not itself locked to another Oscillator's free running oscillator, but the LO is used as the clock reference for the DDS and is the highest frequency oscillator in the system. This LO can also be used as a reference for the digitizer in the receive chain. The present invention takes advantage of the phase noise advantages of free-running oscillators at a distance from the carrier while maintaining coherence with other system components. This system is typically used in FMCW radars.

An electronic device for point-to-multipoint transmission of a digital signal over a radio communication network includes a transmitter-receiver configured to receive a radio-frequency input digital signal and generate therefrom a baseband digital signal and includes a digital signal processor. The digital signal processor includes a receiving module, an input buffer, an audio decoder module and an output buffer. The transmitter-receiver is further configured to receive the duplicated baseband output digital signal and generate therefrom a radio-frequency output digital signal. The transmitter-receiver is configured to receive the radio-frequency input digital signal on the basis of Bluetooth® specifications and transmit the radio-frequency output digital signal on the basis of Bluetooth® specifications, and the microcontroller is configured to realize a unidirectional asynchronous packet data link. There is further described a system for point-to-multipoint radio transmission including a plurality of electronic devices for point-to-multipoint transmission of a digital signal over a radio communication network.

A drop testing machine and a method for adjusting a drop angle belong to the technical field of drop tests, aiming to solve the problems in the prior art that it is troublesome to adjust the posture of a test object, the angle control cannot be realized, and the drop test effect is poor. The drop testing machine of the present invention includes: a drop frame, which performs a rotary motion relative to its own rotating shaft; a lifting mechanism arranged on one side of the drop frame along the vertical direction; and a manipulator fixedly connected by a crank arm and the lifting mechanism. plate, an attitude adjustment unit connected between one end surface of the fixed plate and the crank arm, and two sets of grasping units symmetrically arranged on the other end surface of the fixed plate; the attitude adjustment unit drives the manipulator as a whole to realize horizontal and vertical rotations, The relative opening and closing movement of the two grasping units realizes the flexible grasping or releasing of the sample. The invention can realize the adjustment of arbitrary drop height and drop posture, realize the flexible grasping of the test object, and prevent the test object from being damaged or falling off due to the magnitude of the clamping force.

The invention provides a ramming device for reducing the resistance of the ramming pipe wall and its crossing ramming process. The ramming device for reducing the resistance of the ramming pipe wall includes a cutting ring, a steel casing, and a grouting drag-reducing component , Rammer body and track, wherein, the track is fixedly arranged on the ground for the steel casing to ram into the stratum to be cut along a predetermined direction on the track; the cutting ring is fixedly arranged at the front end of the steel casing, and the cutting ring is not connected with the One end of the steel casing connection is provided with a groove for cutting the soil, and the diameter of the cutting ring is larger than that of the steel casing so that an annular space is formed between the steel casing wall and the cut formation; the rammer and the steel casing The other end is connected to the other end of the steel casing and can exert a ramming force on the steel casing; the grouting drag-reducing component is arranged in the annulus on the outer wall of the steel casing and can pump mud into the annulus to reduce the contact between the outer wall of the steel casing and the Frictional resistance between cutting formations. The invention has the advantages of being able to greatly reduce the resistance during the pipe ramming process, reduce the loss of ramming force, and the like.

The invention relates to a combined touch pad module, a touch signal integration method and a notebook computer. The combined touch pad module is used for a notebook computer and comprises a shell, a fixed touch pad module, a sliding touch pad module and a touch signal processing module, wherein the shell is provided with an opening; the fixed touch pad module comprises a fixed touch pad and a first signal generating module and is fixed on the shell, and when the fixed touch pad is touched, the first signal generating module generates a first touch signal; the sliding touch pad module comprises a sliding touch pad and a second signal generating module; in the case of withdrawing, the sliding touch pad is contained in the shell; in the case of use, the sliding touch pad is moved outside the shell through the opening and is connected with the fixed touch pad in a sliding mode, and when the sliding touch pad is touched in a use state, the second signal generating module generates a second touch signal; and the touch signal processing module is used for processing the first touch signal and the second touch signal to form an integration signal so as to control the notebook computer. The invention extends the operation range of the touch pads.