3results about How to "Improve signal processing capabilities" patented technology

The invention discloses a method for identifying the motion state of an artificial limb wearer. The method comprises the following steps: 1, acquiring a signal; 2, preprocessing the initial signal based on wavelet transform; 3, extracting characteristic values of the signals based on wavelet packets; and 4, classifying and identifying the motion state based on a K-nearest neighbor algorithm. According to the invention, automatic identification of the motion state of the artificial limb wearer is realized, and the identification rate and real-time performance of motion state identification of the artificial limb wearer are effectively improved.

The utility model provides a kind of system level package chip of vehicle-mounted GNSS receiver, receiver and car, chip includes outer circle contact, inner circle contact and chip body;First, eleventh, twenty-third, twenty-fifth, twenty-seventh, thirtieth, thirty-second contact in outer circle contact, and fifth, eighteenth to twenty-fourth, twenty-eighth contact in inner circle contact, are all ground terminal;Fifth contact in outer circle contact and twenty-ninth contact in inner circle contact, are all first power supply terminal;Sixth contact and seventh contact are connected in outer circle contact, and seventh contact is second power supply terminal;Thirty-sixth contact and thirty-fifth contact are connected in outer circle contact, and thirty-fifth contact is third power supply terminal;Twenty-sixth, twenty-eighth, twenty-ninth and thirty-first contact in outer circle contact are four radio frequency input ports respectively;Fortieth contact in outer circle contact and first contact in inner circle contact are respectively communication interface for wired communication.

This invention provides a BTM enhanced antenna unit, including a first filtering circuit, a power supply and triggering circuit, a logic control unit, and a signal acquisition and decision circuit. The first filtering circuit is disposed between the power transmission loop of the antenna and the BTM, and is used to reduce harmonic radiation of the power transmission loop. One end of the power supply and triggering circuit is connected to the power receiving loop, and the other end is connected to the logic control unit, used to regulate the electrical signal on the BTM cable and output a trigger signal to the logic control unit. The signal acquisition and decision circuit is used to acquire the A4 interface signal, make a decision on the A4 interface signal, and output the decision result to the logic control unit. The logic control unit is used to control the acquisition and transmission of the A4 interface signal according to the trigger signal and the decision result. The BTM antenna unit of this invention has an energy judgment function, which improves the reliability of the BTM antenna, reduces the harmonic radiation of the BTM signal, and improves the compatibility between the antenna unit and the BTM.