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Description: 本系统多个测控单元通过串行通信接口与上位机相连，可巡检和控制十二路温度，控制八路电机定时开关，以及依据料位计开关状态按顺序控制十一路卸料输料、电机的起停。已经成功应用于电除尘低压供电控制系统中。-the system control unit through a number of serial communication interface with the PC connected, Patrol and control can be 12 road temperature, the Eighth Route Army motor control timer switch, and the basis for Level Meter switch state sequential control 11 Road dump losers expected, the motor has stopped. Has been successfully applied to low voltage electrostatic precipitator power supply control system.
Platform: |
Size: 58776 |
Author: 赵相立 |
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Description: 本系统多个测控单元通过串行通信接口与上位机相连，可巡检和控制十二路温度，控制八路电机定时开关，以及依据料位计开关状态按顺序控制十一路卸料输料、电机的起停。已经成功应用于电除尘低压供电控制系统中。-the system control unit through a number of serial communication interface with the PC connected, Patrol and control can be 12 road temperature, the Eighth Route Army motor control timer switch, and the basis for Level Meter switch state sequential control 11 Road dump losers expected, the motor has stopped. Has been successfully applied to low voltage electrostatic precipitator power supply control system.
Platform: |
Size: 58368 |
Author: 赵相立 |
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Description: 数字电压表
AD芯片：
采用8位串行A/D转换器ADC0832。
● 8位分辨率，逐次逼近型，基准电压为 5V
● 5V单电源供电
● 输入模拟信号电压范围为 0～5V
● 有两个可供选择的模拟输入通道
显示：
使用三个数码管。
显示范围：
0.00 － 5.10 （单位：V）
连接方式：
AD_CLK → P1.0
AD_DAT → P1.1
AD_CS → P3.4
模拟输入 → CH0
(AD_DAT = DO + DI)
ADC0832输出最大转换值＝FFH (255)
设定最大测量值＝5.1V
255X=5.1 X=0.02 即先乘2再除以100
（小数点放在第三位数码管）-Digital Voltage Meter AD-Chip: 8-bit serial A/D converter ADC0832. ● 8-bit resolution, successive approximation type, the base voltage of 5V ● 5V single power supply ● analog signal input voltage range of 0 ~ 5V ● have two options display analog input channels: the use of three digital tube. Display range: 0.00- 5.10 (unit: V) connection: AD_CLK → P1.0 AD_DAT → P1.1 AD_CS → P3.4 analog input → CH0 (AD_DAT = DO+ DI) ADC0832 output maximum conversion value = FFH (255 ) to set the maximum measured value = 5.1V255X = 5.1 X = 0.02 which is to take 2 and then divided by 100 (the decimal point on the third digital tube)
Platform: |
Size: 15360 |
Author: jimmy |
Hits:
Description: 数字电压表
AD芯片：
采用8位串行A/D转换器ADC0832。
● 8位分辨率，逐次逼近型，基准电压为 5V
● 5V单电源供电
● 输入模拟信号电压范围为 0～5V
● 有两个可供选择的模拟输入通道
显示：
使用三个数码管。
显示范围：
0.00 － 5.10 （单位：V）
连接方式：
AD_CLK → P1.0
AD_DAT → P1.1
AD_CS → P3.4
模拟输入 → CH0
(AD_DAT = DO + DI)
ADC0832输出最大转换值＝FFH (255)
设定最大测量值＝5.1V
255X=5.1 X=0.02 即先乘2再除以100
（小数点放在第三位数码管）-Digital Voltage Meter AD-Chip: 8-bit serial A/D converter ADC0832. ● 8-bit resolution, successive approximation type, the base voltage of 5V ● 5V single power supply ● analog signal input voltage range of 0 ~ 5V ● have two options display analog input channels: the use of three digital tube. Display range: 0.00- 5.10 (unit: V) connection: AD_CLK → P1.0 AD_DAT → P1.1 AD_CS → P3.4 analog input → CH0 (AD_DAT = DO+ DI) ADC0832 output maximum conversion value = FFH (255 ) to set the maximum measured value = 5.1V255X = 5.1 X = 0.02 which is to take 2 and then divided by 100 (the decimal point on the third digital tube)
Platform: |
Size: 12288 |
Author: jimmy |
Hits:
Description: 数字电压表
AD芯片：
采用8位串行A/D转换器ADC0832。
● 8位分辨率，逐次逼近型，基准电压为 5V
● 5V单电源供电
● 输入模拟信号电压范围为 0～5V
● 有两个可供选择的模拟输入通道
显示：
使用P0口的数码管显示转换值。
显示范围：
0.00 － 5.10 （单位：V）
连接方式：
AD_CLK → P1.0
AD_DAT → P1.1
AD_CS → P3.4
模拟输入 → CH0
(AD_DAT = DO + DI)
ADC0832输出最大转换值＝FFH (255)
设定最大测量值＝5.1V
255X=5.1 X=0.02 即先乘2再除以100
（小数点放在第三位数码管）-Digital Voltage Meter AD-Chip: 8-bit serial A/D converter ADC0832. ● 8-bit resolution, successive approximation type, the base voltage of 5V ● 5V single power supply ● analog signal input voltage range of 0 ~ 5V ● There are two options for analog input channels display: the mouth of the use of P0 digital display conversion values. Display range: 0.00- 5.10 (unit: V) connection: AD_CLK → P1.0 AD_DAT → P1.1 AD_CS → P3.4 analog input → CH0 (AD_DAT = DO+ DI) ADC0832 output maximum conversion value = FFH (255 ) to set the maximum measured value = 5.1V255X = 5.1 X = 0.02 which is to take 2 and then divided by 100 (the decimal point on the third digital tube)
Platform: |
Size: 35840 |
Author: jimmy |
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Description: AD高精度采集校正设计
提出了一种高精度数模转换软件校正算法,用以消除运放放大器、比例电阻、AD转换器、印制电路板等物理上带来的误差，我们已成功应用于数字电压表、数字电流表、数字欧姆表、数字程控电源等项目上，实践证明该算法应用于各种AD高精度转换的校正,消除物理上带来的误差-AD-tuning the design of high-precision capture of a high-precision digital-to-analog conversion software correction algorithm to eliminate OPAMP amplifier, the ratio of resistors, AD converters, printed circuit board, such as the error caused by physical, we have successfully applied digital voltage meter, digital ammeter, digital ohmmeter, digital program-controlled power supply and other projects, the practice proved that the algorithm is applied to a variety of high-accuracy AD conversion of the correction, to eliminate the error caused by physical
Platform: |
Size: 30720 |
Author: 陈任 |
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Description: 我用单片机8952和电压比较器339做了一个简单的电容容量测量表，参数大
致如下：
电容测量范围为1pF-9999.99uF，最小分辨力为1pF。分为5个量程，可以自
动切换量程，也可手动切换。
另外，有简单的频率计功能，能测量0-60MHz的数字信号频率（TTL电平）；
还可以产生几个单点频率的方波信号（比如1KHz）。
采用1602LCD作为显示器；4个按键控制；使用24C01保存当前设置值，不用
每次开机重新设置。可单5V供电，也可9V交流供电
-I used the single-chip 8952 and the voltage comparator 339 to do a simple capacitance measurement table, parameters are as follows: capacitance measurement range 1pF-9999.99uF, the minimum resolution for the 1pF. Divided into five ranges, you can automatically switch range can also be manually switched. In addition, a simple frequency meter function, capable of measuring 0-60MHz frequency digital signal (TTL level) can also lead to several single-point-frequency square-wave signal (for example, 1KHz). 1602LCD used as a monitor 4 button control use 24C01 to preserve the current settings, do not reset each boot. Can be a single 5V power supply, 9V AC power supply can also be
Platform: |
Size: 524288 |
Author: vitochung |
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Description: 数字电压表
AD芯片：
采用8位串行A/D转换器ADC0832。
● 8位分辨率，逐次逼近型，基准电压为 5V
● 5V单电源供电
● 输入模拟信号电压范围为 0～5V
● 有两个可供选择的模拟输入通道
-Digital Voltage Meter AD-Chip: 8-bit serial A/D converter ADC0832. ● 8-bit resolution, successive approximation type, the base voltage of 5V ● 5V single power supply ● analog signal input voltage range of 0 ~ 5V ● There are two options for analog input channels
Platform: |
Size: 8192 |
Author: q |
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Description: 数字电压表中常采用式ADC0832。DAC0832是8位串行A/D转换器；转换速度较高（250KHz时转换时间32ms）；单电源供电，功耗低（15mw）。具有较高的抗干扰特性。-Digital voltage meter often used type ADC0832. DAC0832 8-Bit Serial A/D converter conversion speed higher (250KHz when the conversion time 32ms) single power supply, low power consumption (15mw). Have a high anti-interference characteristics.
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Size: 118784 |
Author: 建成 |
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Description: 无线数字抄表系统由中央处理器、电源模块、通讯模块以及显示模块等部分组成-Wireless digital meter reading system by the CPU, power supply module, communication module and display module and other components
Platform: |
Size: 3072 |
Author: 林龙二 |
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Description: 无线数字抄表系统由中央处理器、电源模块、通讯模块以及显示模块等部分组成-Wireless digital meter reading system by the CPU, power supply module, communication module and display module and other components
Platform: |
Size: 167936 |
Author: 林龙二 |
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Description: 水电费收费管理系统，ACSESS数据库，人工录入抄表数据，对用户水、电费进行缴费操作，打印用户票据，行成管理所需报表并打印-Utilities charge management system, ACSESS databases, manual meter reading recorded data, the user water supply, electricity, to carry out payment operations, print the user notes, the regulatory requirements and print statements
Platform: |
Size: 1594368 |
Author: liyun |
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Description: 上传的是我们的毕业论文设计的方案，有数控直流稳压电源的、数字频率计和单片机点菜的论文。-From the thesis, we designed the program, there are digital DC power supply, single-chip digital frequency meter and order papers.
Platform: |
Size: 1095680 |
Author: 张文明 |
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Description: 多功能电力载波模块采用了高度集成的电路设计，整个模块取消了外围电力线耦合电路和调整电路，具体应用时简单到只需接入外部供电电源即可，数据的发送和接收也只需遵循常用的单片机串口协议进行操作即可。
适用场合，例如：
1.宾馆、酒店、商场、学校、小区灯光的集中控制和管理
2.无人值班的电气设备的远程控制和管理
3.工厂、矿井的电气设备的远程控制和监控
4.远程温度、湿度的测量和监控
5.远程抄表系统
6.简单的基于电力线的内部呼叫系统
7.智能家居的各种应用
8.替代各种有线方式的数据传输，节省成本-Low-cost Power Line Multi-function module using a highly integrated circuit design, the entire abolition of the external module power line coupling circuit and adjust the circuit, the specific application can access the simple to the external power supply can, to send and receive data can also follow the commonly used single-chip serial port protocol operation.
The application of occasions, such as:
1. Guesthouses, hotels, shopping malls, schools, residential lighting control and management of centralized
2. No one on duty electrical equipment, remote control and management
3. Factories, mine electrical equipment remote control and monitoring
4. Remote Temperature and humidity measurement and control
5. Remote meter reading system
6. A simple power line-based system of internal calls
7. Intelligent home applications
8. To replace the various forms of data transmission cable, to cut costs
Platform: |
Size: 560128 |
Author: |
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Description: 我设计的电能表原理图，比较完整，可以供电能表的同行参考。-I designed the power meter schematic, more complete, you can supply to their counterparts in the table for reference.
Platform: |
Size: 3110912 |
Author: 烟雨楼 |
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Description: 摘要
电能表作为用电量的测量工具广泛的应用于各种场合。在电能表校表系统中,需要的最基本的输入信号源是高精度双路正弦信号源,并要求可对其频率、相位、幅值进行调节,来对电能表进行校准。
基于单片机的程控信号源设计，运用数字调相、数字调幅和数字调频等技术，要求实现相位、幅度、频率的高精度程控调节。本文设计了一种利用锁相环频率合成技术和数字波形合成技术组成的程控低频正弦波信号发生器，并给出了调幅、调频、调相的实用电路，频率调节通过改变8253计数器的分频系数来实现；相位调节由51单片机预置计数器的计数初值来完成，幅度的调整通过改变DAC1210II的参考电压来实现，使频率分辨率达0.01Hz,相位调节精度达0.1°，并介绍电路中的主要芯的功能及使用。输出正弦波频率和幅值的精度高，稳定性好，失真度低，电路简单、可靠、便于程控。
关键词：数字合成信号源；程控；调幅；调频；移相；
-Abstract
Meter consumption as the size of the measurement tool is widely used in various occasions. In single-phase power meter verify system, the most basic needs of the input signal is the source of two-way high-precision sine signal source, and may request its frequency, phase, amplitude in a certain step to adjust to the imitate of the actual electricity load with a right meter calibration.
Design of the programmable signal supply controlled source，which based on the MCU，including digital phase adjustment，distal amplitude adjustment，digital frequency adjustment etc．The system should achieve high quality digital adjustment of phase, amplitude and frequency. This paper describes the use of a PLL frequency synthesizer technology, and digital wave form synthesis technology consisting of program-controlled low-frequency sine wave signal issued devices, and applies the amplitude， frequency， phase of practical circuit. Frequency can be adjusted through a change in the 8253 counter-frequ
Platform: |
Size: 381952 |
Author: 张谦 |
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Description: 基于XILINX平台设计的数字频率计，在FPGA内部设计信号源，产生100KHz方波，板上数码管用于显示被测信号频率，并显示6位有效数字，实现对TTL电平的测试，测量精度为10Hz。-: The digital frequency meter based on XILINX development terrace generates 100 KHz square waves by a supply oscillator within FPGA. The nixietubes of the board, which is available of 6 significant figures, are used to display the frequency of the test signal. The meter can realize the function of testing TTL level and gain 10 Hz accuracy.
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Size: 123904 |
Author: wen |
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Description: This multimeter was designed to measure output voltage and current in a PSU, where the current sense shunt resistor is connected in series with load at the negative voltage rail. It needs only one supply voltage that can be acquired from main PSU.
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Size: 547840 |
Author: imtiaz |
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Description: Pic16f88 Volt supply meter
Platform: |
Size: 1136640 |
Author: Yak |
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Description: 两路可调电源&AD0804电压表,数码管显示，附电路图及protues仿真-Two adjustable power supply &AD0804 voltage meter, digital tube display, with circuit diagram and Protues simulation
Platform: |
Size: 167936 |
Author: 唐诗会 |
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