Tag:signal

  • Interview summary of IOS senior engineer

    Time:2020-11-25

    Interview form: telephone interview As a developer, it is very important to have a learning atmosphere and a communication circle. This is my ownIOS communication groupNo matter you are Xiaobai or Daniel, welcome to join us. Share bat, Ali’s interview questions, interview experience, discuss technology, let’s communicate, learn and grow together! 1. How do you […]

  • Implementation of moving average filter in hand to hand teaching series

    Time:2020-11-23

    [guide]: the previous article about IIR design, or some friends click to read. Although I don’t know how the viewers feel, but I think there is always a favor to read, so I decided to continue this series. This article talks about the average filter, this topic at first glance is very easy. However, some […]

  • Aprelu: cross border application, adaptive relu | IEEE tie 2020 for machine fault detection

    Time:2020-11-22

    The work of this paper belongs to the application of deep learning in the industrial field. Referring to the solution of computer vision, the adaptive aprelu is proposed for the scene of machine fault detection, which greatly improves the accuracy of fault detection. The overall idea of the paper should also be applied to computer […]

  • Design of IIR filter for hand to hand teaching series

    Time:2020-11-22

    [guide]: in embedded system, it is often necessary to collect analog signals. It is inevitable to introduce interference into the signal chain of collecting analog signals. So how to filter out the interference? Today, let’s describe step by step how to design and deploy an IIR filter to your system. What is IIR filter? Infinite […]

  • [QT] subclass qthread to realize multithreading

    Time:2020-11-18

    Analysis of qthread source code This is the source code address of this example: https://gitee.com/CogenCG/QThreadExample.git Subclass qthread to achieve multithreading. Only the run function of qthread is in the new thread, and all other functions are in the thread generated by qthread. The correct way to start a thread is to call qthread:: start() to […]

  • Technology sharing | things between wrapper and dble

    Time:2020-11-18

    Author: Bao Fengqi background In the upcoming release of dble 2.19.09.0, we will upgrade the version of JSW in dble from version 3.2.3 to version 3.5.41. The reason for the upgrade is that we found several serious bugs in the process of using. These bugs will cause the daemons of dble to exit abnormally and […]

  • [QT] subclass QObject + movetothread to realize multithreading

    Time:2020-11-17

    Previous links: Analysis of qthread source code Subclassing qthread for multithreading This article example source code address: https://gitee.com/CogenCG/QThreadExample.git From the previous issue of “qthread source analysis”, we can see that before qt4.4, run was a pure virtual function, so we must subclass qthread to implement run function. Since qt4.4, qthread no longer supports abstract classes. […]

  • Network timing server

    Time:2020-11-16

    Network timing server is a time server that receives satellite time information and outputs itNTPThe network outputs time information, and then transmits it to the terminal equipment which needs time to calibrate the terminal equipment.NTPNetwork time protocol is a protocol that can synchronize the time of each computer in the network. It can provide time […]

  • [QT] inheriting qrunnable + qthreadpool to implement multithreading

    Time:2020-11-14

    Previous links: Analysis of qthread source code Subclassing qthread for multithreading Subclassing QObject + movetothread for multithreading This article example source code address: https://gitee.com/CogenCG/QThreadExample.git The method of inheriting qrunnable + qthreadpool to implement multithreading is relatively less used. Here is a brief introduction to the method used. We can choose the method according to the […]

  • Talking about interruption mechanism

    Time:2020-11-14

    What is interruption Interrupt is actually a kind of “interrupt” event. What does interrupt mean? We need to consider its locationContextandReference objectWho is it? Considering the event, we can simply abstract the interrupt into such a model When we analyze an interruption event, we need to clarify these four objects Interrupt source Who is the […]

  • Beidou synchronous clock (master clock controller) applied to remote control system of electrified railway

    Time:2020-11-13

    Beidou synchronous clock (master clock controller) applied to remote control system of electrified railway Beidou synchronous clock (master clock controller) applied to remote control system of electrified railway Beijing Zhun electronic technology official micro enterprise — ahjzsz With the rapid development of automation technology of railway power supply system and the wide application of computer […]

  • [QT] cross thread signal slot (connect function)

    Time:2020-11-11

    The signal slot mechanism of the thread needs to turn on the event loop mechanism of the thread, that is to call the qthread:: exec() function to start the event loop of the thread. The prototype of QT signal slot connection function is as follows: bool QObject::connect ( const QObject * sender, const char * signal, const […]