Description: 软件A/D所能实现的精度有限，测量电压范围是2-15V，
而且速度低(约1KHz),但仅用一个电容和一个电阻的诱惑
力，我想大虾您会笑纳的。用于某些场合是有用的。
原理是利用470K电阻对1uF电容充电，利用P0.0口作为检测电压，
当电压低于1/3 VCC时，P0.0读入的I/O电平为0，当充电电压超过
1/3 VCC时，P0.0读入的I/O电平为1。通过测量此过程所用的时间，
就能判断输入电压（需要换算）。
程序的编写用定时器0实现-Software A / D can achieve the accuracy is limited, measuring voltage range is 2-15V, and low-speed (approximately 1 KHz), but only a capacitance and resistance of a temptation, I think you will prawns to the heart. For certain occasions is useful. The principle is the use of 470 K resistor pairs .1 uF capacitor charging, as I use P0.0 detection voltage, When the voltage is lower than 1 / 3 VCC, P0.0 read into the I / O level to 0, When the charging voltage over 1 / 3 VCC, P0.0 read into the I / O level to 1. By measuring this process, the time spent, we will be able to judge the input voltage (need conversion). The preparation procedures used to achieve timer 0 Platform: |
Size: 1011 |
Author:张丰 |
Hits:
Description: 软件A/D所能实现的精度有限，测量电压范围是2-15V，
而且速度低(约1KHz),但仅用一个电容和一个电阻的诱惑
力，我想大虾您会笑纳的。用于某些场合是有用的。
原理是利用470K电阻对1uF电容充电，利用P0.0口作为检测电压，
当电压低于1/3 VCC时，P0.0读入的I/O电平为0，当充电电压超过
1/3 VCC时，P0.0读入的I/O电平为1。通过测量此过程所用的时间，
就能判断输入电压（需要换算）。
程序的编写用定时器0实现-Software A/D can achieve the accuracy is limited, measuring voltage range is 2-15V, and low-speed (approximately 1 KHz), but only a capacitance and resistance of a temptation, I think you will prawns to the heart. For certain occasions is useful. The principle is the use of 470 K resistor pairs .1 uF capacitor charging, as I use P0.0 detection voltage, When the voltage is lower than 1/3 VCC, P0.0 read into the I/O level to 0, When the charging voltage over 1/3 VCC, P0.0 read into the I/O level to 1. By measuring this process, the time spent, we will be able to judge the input voltage (need conversion). The preparation procedures used to achieve timer 0 Platform: |
Size: 1024 |
Author:张丰 |
Hits:
Description:
摘要：针对高速高精度帧片机视觉检测中的元件图像分割问题，提出了一种改进分水岭算法。该算法结合传统的边缘检测和阈值分割，并采用一定的集水盆区域合并准则，有效地抑制了过分割现象。现场运行结果表明该算法效果很好，满足了帧片机视觉检测的要求。-Abstract: In view of high-speed high-precision machine vision inspection frame components in the image segmentation problem, an improved watershed algorithm. The algorithm combines the traditional edge detection and threshold segmentation, and the use of certain collection basin regional merger guidelines, effectively curbed the phenomenon of over-segmentation. Running results show that the algorithm works well and meets the frame machine vision inspection requirements. Platform: |
Size: 125952 |
Author:文演 |
Hits:
Description: Voice enabled applications over the Internet are
rapidly gaining popularity. Reducing the total bandwidth require-
ment can make a non-trivial difference for the subscribers having
low speed connectivity. Voice Activity Detection algorithms for
VoIP applications can save bandwidth by fi ltering the frames
that do not contain speech Platform: |
Size: 455680 |
Author:siva |
Hits:
Description: GPU Accelerating Speeded-Up Robust Features. Many computer vision tasks require interest point detection and description, such as real-time visual navigation. We present a GPU implementation of the recently proposed Speeded-Up Robust Feature extractor, currently the state of the art for
this task. Robust feature descriptors can give vast improvements
in the quality and speed of subsequent steps, but require intensive
computation up front that is well-suited to inexpensive graphics
hardware. We describe the algorithm’s translation to the GPU in
detail, with several novel optimizations, including a new method
of computing multi-dimensional parallel prefix sums. It operates
at over 30 Hz at HD resolutions with thousands of features and
in excess of 70 Hz at SD resolutions. Platform: |
Size: 1541120 |
Author:yangwei |
Hits:
Description: Designing spectral e±cient, high-speed wireless links that o® er high quality-
of-service and range capability has been a critical research and engineering chal-
lenge. In this thesis, we mainly address the complexity and performance issues of
channel estimation and data detection in multiple-input multiple-output (MIMO)
orthogonal frequency division multiplexing (OFDM) systems over time-varying
channels. Platform: |
Size: 493568 |
Author:ashish |
Hits:
Description: Mysmo.mdl
永磁同步电机的主程序，可以实现有速度传感器启动运行，和无速度传感器运行。
SMOmodel.m
改进的滑模观测器模型，实现永磁同步电机反电动势的估算。
PFCDCM0hm5
用的是0.5hm的电感，实现220V交流电变换成400V的直流电，电流断续。
由于是仿真，如果要硬件实现的话，除了需要电压采样外，还需要一个输入电压过零检测
PFCCM320percent98k50
用的是5hm的电感，实现220V交流电变换成320V的直流电，电流连续。功率因数可以达到0.98，用的开关频率为50K
PFCCM400percent97k50.mdl
用的是5hm的电感，实现220V交流电变换成400V的直流电，电流连续。功率因数可以达到0.97，用的开关频率为50K
-Permanent magnet synchronous motor Mysmo.mdl main program, you can achieve the speed sensor up and running, and speed sensors run. SMOmodel.m improved sliding mode observer model permanent magnet synchronous motor back-EMF estimates. PFCDCM0hm5 with is 0.5hm inductor to achieve 220V AC transform into a 400V DC current is interrupted. As the simulation, hardware implementation, then, in addition to the voltage sampling an input voltage over zero detection PFCCM320percent98k50 the is 5hm inductance to achieve transformation 220V AC 320V DC continuous current. The power factor can reach 0.98, the switching frequency for 50K PFCCM400percent97k50.mdl with is 5hm inductance 220V AC transform 400V DC continuous current. The power factor can reach 0.97, with the switching frequency is 50K Platform: |
Size: 63488 |
Author:Catherina |
Hits:
Description: 基于STC15F204EA的电机控制程序，包含了过零检测，调速电阻检测，及交流电机通过双向可控硅的速度控制-STC15F204EA motor control program contains over zero detection, speed resistor detection, and AC motor speed control triac Platform: |
Size: 3072 |
Author:shinning |
Hits:
Description: I2C Master IP 核
I2C is a two-wire, bi-directional serial bus that provides a simple and efficient method of
data exchange between devices. It is most suitable for applications requiring occasional
communication over a short distance between many devices. The I2C standard is a true
multi-master bus including collision detection and arbitration that prevents data
corruption if two or more masters attempt to control the bus simultaneously.
-I2C is a two-wire, bi-directional serial bus that provides a simple and efficient method of
data exchange between devices. It is most suitable for applications requiring occasional
communication over a short distance between many devices. The I2C standard is a true
multi-master bus including collision detection and arbitration that prevents data
corruption if two or more masters attempt to control the bus simultaneously.
The interface defines 3 transmission speeds:
- Normal: 100Kbps
- Fast: 400Kbps
- High speed: 3.5Mbps
Only 100Kbps and 400Kbps modes are supported directly. For High speed special IOs
are needed. If these IOs are available and used, then High speed is also supported. Platform: |
Size: 11264 |
Author:qingmingyang |
Hits:
Description: IEEE 802.3 2012 标准,以太局域网络操作
1 Mb / s到100 Gb / s的采用通用的媒体访问控制（MAC）规范和管理信息库（MIB）。带有冲突检测（CSMA / CD）的载波侦听多路访问
MAC协议指定共享介质（半双工）的操作，以及全双工操作。速度具体媒体独立接口（MIIS）允许使用选定的物理层设备（PHY）工作在同轴电缆，双绞线或光纤电缆。系统注意事项多段共享接入网络描述使用被定义为中继器运行速度高达1000 Mb / s的。支持局域网（LAN）运行在所有速度。其他特定功能包括对接入网络的各种PHY类型，物理层适于城域网的应用，并在所选择的提供功率的双绞线PHY类型-IEEE 802.3 2012 standard,Ethernet local area network operation is specified for selected speeds of operation from
1 Mb/s to 100 Gb/s using a common media access control (MAC) specification and management
information base (MIB). The Carrier Sense Multiple Access with Collision Detection (CSMA/CD)
MAC protocol specifies shared medium (half duplex) operation, as well as full duplex operation.
Speed specific Media Independent Interfaces (MIIs) allow use of selected Physical Layer devices
(PHY) for operation over coaxial, twisted-pair or fiber optic cables. System considerations for
multisegment shared access networks describe the use of Repeaters that are defined for
operational speeds up to 1000 Mb/s. Local Area Network (LAN) operation is supported at all
speeds. Other specified capabilities include various PHY types for access networks, PHYs
suitable for metropolitan area network applications, and the provision of power over selected
twisted-pair PHY types Platform: |
Size: 25608192 |
Author:李书荣 |
Hits:
Description: 富士通180度变频洗衣机方案特性
采用富士通ARM Cortex内核的芯片: MB9AF312K，响应速度更快
兼容FOC和VF两种控制算法
支持单电阻采样功能
电机驱动频率可调：16K~20K
速度稳定度高：5‰
称重精度高达500g
不平衡检测(OOB)精度高达100g，且线性度和稳定度较好
具备电子刹车功能，快速的升降速(20s以内)
宽泛的工作频率：0~500hz
支持恒电流输出功能
支持多种电机: PMSM/BLDC
支持GUI功能，可方便地观察内部参数的运行状态
丰富的保护功能：过压/欠压保护，电机缺相保护，电机堵转保护
霍尔信号丢失保护，过载保护，IPM过流/过温保护-Fujitsu 180-degree program features inverter washing machine uses Fujitsu ARM Cortex core chip: MB9AF312K, faster response compatible FOC and VF two control algorithms sampling function supports single resistor motor drive frequency is adjustable: 16K ~ 20K speed stability high: 5 ‰ precision weighing up to 500g imbalance detection (OOB) accuracy of up to 100g, and better linearity and stability with electronic brake function, rapid acceleration and deceleration (20s or less) broad operating frequency: 0 ~ 500hz support constant current output to support multiple motor: PMSM/BLDC support GUI functionality can be easily observed running internal parameters rich protection: overvoltage/undervoltage protection, motor phase loss protection, Motor stall protection Hall signal loss protection, overload protection, IPM over current/over temperature protection Platform: |
Size: 1464320 |
Author:深圳富士通代理 |
Hits:
Description: pic步进电机驱动范例程序，有Pid调速，过流检测等-Pic stepper motor driver example program, Pid speed, over current detection, etc. Platform: |
Size: 1098752 |
Author:liuchanggeng |
Hits:
Search - over speed detection