该文档为一种双输出PWM型电流模式控制的DCDC转换器的设计总结文档,是一份不错的参考资料,感兴趣的可以下载看看,,,,,,,,,,,,,,,,,
上传时间: 2022-07-26
上传用户:jiabin
该文档为八通道开关量采集模块-开关量转RS485-DI开关量信号隔离转换器精讲文档,是一份不错的参考资料,感兴趣的可以下载看看,,,,,,,,,,,,,,,,,
上传时间: 2022-07-27
上传用户:yiyewumian
该文档为4-20MA转485、232数据采集器、AD转换器精讲文档,是一份不错的参考资料,感兴趣的可以下载看看,,,,,,,,,,,,,,,,,
标签: 数据采集器
上传时间: 2022-07-27
上传用户:13692533910
LM2576 DC-DC降压型电源转换器设计,固定输出5V或12V电路图及PCB尺寸
上传时间: 2022-07-27
上传用户:yiyewumian
MAX31856可以对任何类型热电偶的信号进行冷端补偿和数字转换,输出数据以摄氏度为单位。转换器温度分辨率达0.0078125°C,允许读取最高+1800°C、最低-210°C (取决于热电偶类型)的温度读数,热电偶电压测量精度达±0.15%。热电偶输入端提供±45V过压保护。
上传时间: 2022-08-10
上传用户:yui0900826
USBcan2转换器原理图、PCB源文件、源码,基于STM32设计
上传时间: 2022-08-10
上传用户:moh2000
针对CAN总线在现场运用中存在的一些限制因素,及煤矿井下液压支架电液控制系统CAN总线组网控制中存在的问题,提出了一种基于意法半导体公司STM32单片机的单线CAN总线隔离中继器。充分利用了STM32F105系列单片机内部集成的双bxCAN控制器和飞思卡尔MC33879的单线CAN收发器的特性,构成了一种软中继器。实践证明该设计有效解决了多点供电、网络规模限制、电磁兼容性的问题,对提高煤矿自动化生产安全和效率具有较大意义。
上传时间: 2013-11-23
上传用户:lml1234lml
利用单片机具有的智能程序控制的特点,设计了基于STC89C52单片机的"二极管特性测试器",可对二极管一般特性进行快速测试。通过稳定线性电流源给二极管加载恒定电流,然后由高精度模数转换器测试其压降,以此为基础可判断二极管好坏、检测二极管极性和测试二极管伏安特性等,避免了用万用表测试只能测得极性而不知其特性这一缺点。可用于电子设计制作过程中对二极管进行快速测试,以确定被测二极管是否满足电路的设计要求。 Abstract: By making good use of the intelligent control function of the Micro Controller Unit (MCU), the diode trait tester was designed based on the STC89C52,which could be used to test the trait of a diode rapidly. By loading constant current to diode through the stable linear current source, and measuring the voltage drop of the diode by high-precision analogue-to-digital converter (ADC), it can judge whether the diode is good or not, distinguish the polarity of the diode, and test the trait that the diode, which can avoid the fault of using a multimeter can only measure the polarity but not the trait. This device can be used to test the trait of a diode quickly,and to make sure that whether a diode can be used in the electronic design or not.
上传时间: 2013-11-13
上传用户:assef
以太网和CAN总线应用广泛,但由于其通信协议不同,两种总线器件间无法进行数据通信,因此,设计了基于CP2200与C8051F040的以太网总线与CAN总线接口转换电路,并给出部分相关硬件电路与软件设计分析。在保证数据完整和协议可靠的前提下,通过握手协议和简化的以太网协议,不仅实现了以太网数据与CAN数据的转发,同时还顺利的解决了以太网的高速性与CAN的低速率冲突,以及两者数据包之间的大小不同的矛盾。 Abstract: In the development of actual application, Ethernet and CAN bus are used very extensively. Owing to its various communication protocols, the communicating between two kinds of bus device can’t be carried out. Therefore, in order to solve this problem, the Ethernet-CAN bus interface circuit based on CP2200 and C8051F040 was designed in this paper, and part of the related hardware circuit and software design analysis were given. On the condition of data’s integrity and protocols’reliability, through the handshaking protocols and the simplified the Ethernet protocol, not only the data switching between CAN and Ethernet was realized, but also the differ in velocity and packet size was solved.
上传时间: 2013-10-15
上传用户:Ants
针对众多低成本数据采集需求,采用带有片上USB控制器和D/A转换器的混合信号微处理器C8051F340,设计了一款可通过USB接口和LabVIEW图形用户界面实现与PC机联机的数据采集器,同时借助系统的SD卡存储独立实现现场长时间采集数据。该数据采集器成本低,结构简单,体积小,已成功用于工业现场。 Abstract: Aiming at the need of low cost data acquisition, a data acquisition device is designed based on C8051F340 which is a mixed-signal microcontroller and integrates USB controller and A/D controller on a chip.The data acquisition device which can combine with PC by USB interface and LabVIEW graphical user interface,can realize data acquisition. At the same time,it can be solely run a long time in virtue of SD card in field.The date aequisition device features low cost,simple structure and little sharp, and it has been used in industry field.
上传时间: 2014-05-31
上传用户:1109003457