37results about How to "Accurate signal detection" patented technology

A method for accurate signal detection begins by receiving a radio frequency signal, which is then converted into baseband signals. The processing then continues by performing a normalized auto correlation on the down-converted baseband signal to produce a normalized auto correlation signal. The process continues by performing a periodic pattern detection on the down-converted baseband signal to produce a normalized detected periodic signal. The process then continues by comparing the normalized auto correlation value with an auto correlation threshold and by comparing the normalized detected periodic signal with a set of thresholds. When the normalized auto correlation value compares favorably with the auto correlation threshold and when the normalized detected periodic signal compares favorably with the set of thresholds, the down-converted baseband signal is indicated to be a valid signal.

A method, system and apparatus for notifying and determining an antenna port location relationship are disclosed. A network side configures an indication signaling of a CSI-RS referenced by a DMRS, and / or a first enabling indication signaling used for indicating whether the indication signaling of the CSI-RS referenced by the DMRS is enabled; or the network side further configures an indication signaling of a CRS referenced by each set of CSI-RSs which are quasi-co-located, and / or a second enabling indication signaling used for indicating whether the indication signaling of the CRS referenced by each set of CSI-RSs which are quasi-co-located is enabled. In the above scheme, a terminal is enabled to determine a reference signal port referenced in time-frequency synchronization, thereby providing a time-frequency synchronization precision.

Signal detection circuitry for a serial interface oversamples the input—i.e., samples the input multiple times per clock cycle—so that the likelihood of missing a signal is reduced. Sampling may be done with a regenerative latch which has a large bandwidth and can latch a signal at high speed. The amplitude threshold for detection may be programmable, particularly in a programmable device. Thus, between the use of a regenerative latch which is likely to catch any signal that might be present, and the use of oversampling to avoid the problem of sampling at the wrong time, the likelihood of failing to detect a signal is greatly diminished. Logic, such as a state machine, may be used to determine whether the samples captured s do or do not represent a signal. That logic may be programmable, allowing a user to set various parameters for signal detection.

A diaphragm device includes a diaphragm mechanism, a connector, an identification unit for identifying a control mode of a signal communicated via the multiple terminals on the basis of voltage of the signal, and a control unit, wherein the switching unit switches the communication path so that a pulse signal capable of driving the pulse signal driven actuator is generated for generating the pulse signal on the basis of the signal, and output to the pulse signal driven actuator if the control mode of the signal is identified as one based on a control mode incapable of directly driving the pulse signal driven actuator; and the switching unit switches the communication path so that the signal is output to the pulse signal driven actuator if the control mode of the signal is identified as a first control mode based on a pulse signal directly driving the pulse signal driven actuator.

The invention relates to a light-emitting diode (LED) energy-saving lamp intelligent control device and a control method; the device comprises an LED module, an LED driving circuit, a sensor, a timer, a single-chip microcomputer, a Zigbee network and a terminal computer. Firstly, the working periods of the LED module are set in the timer, the sensor acquires a signal, and the single-chip microcomputer analyzes the acquired signal and controls the LED module to light. Through the LED energy-saving lamp intelligent control device, the information of people and vehicles which pass by a lighting area can be detected in real time, so that a lamp is 'on' when the people or the vehicle pass by and 'off' when nobody or no vehicle passes by, the on-demand lighting is realized, a lighting device is not started if the brightness in the area is enough, and the purposes of lighting and saving energy are achieved to the largest extent; and the operation of the lighting device is monitored in real time, so that the service quality of a community management department is improved, and the life quality of the people in a community moves forward a new step.

The invention provides an accurate detection device for a sliver of a carding machine. The accurate detection device comprises a detection box, a bell mouth, a detection mechanism and a sensor and is characterized in that the tail part of the bell mouth is provided with an opening and the bell mouth is fixed on a bell mouth fixing and adjusting plate arranged on the detection box. The detection mechanism comprises an upper press roller, a lower press roller, an upper press roller rotating support shaft and a lower press roller rotating shaft, wherein the lower press roller is connected with the upper press roller rotating support shaft, the lower press roller is fixed on the lower press roller rotating shaft, the upper and the lower press rollers are in a double raised roller manner, and detection bulges which are arranged in the upper and the lower press rollers and used for detecting thickness displacement of a sliver are inserted in the middle of the opening at the tail part of thebell mouth; one end of a lever detection arm is connected with the detection box, the other end of the lever detection arm presses the sensor in an elastic manner, and the middle part of the lever detection arm is connected with the upper press rotating support shaft. By the adoption of the accurate detection device, accuracy and reliability of sliver detection can be improved, manufacturing costcan be reduced and production efficiency can be improved; in addition, the accurate detection device has the advantages of reasonable and compact structure and low requirement on the processing and assembly accuracy of a detection point.

The invention discloses a portable vibration auxiliary drilling device, a hole making method and a processing signal detecting method, which belongs to the field of vibration auxiliary drilling processing. The device comprises a shell (1), a fixed inner shell (3), a movable inner shell (5), a conductive ring (8), a vibration unit (6), and a motor (12). The portable vibration auxiliary drilling device, a hole making method and a processing signal detecting method has advantages that: (1) adjusting the pre-tightening force, the size of the rear cover plate and the intermediate block to adjust the vibration frequency of the device, by using the piezoelectric ceramic driving mode, thereby obtaining excellent drilling performance; (2) real-time monitoring the speed, feed and the number of holesin the drilling process, to achieve intelligent processing, and reducing the adverse effects of human factors on the processing quality; (3) the mobile inner shell structure eliminates the interference signal during non-processing, and the signal detection is more accurate; (4) using a universal tool mounting structure to realize rapid tool change, which is simple and easy to implement in practical applications.