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QT modbus串口调试程序
modbus测试由master和slave两部分程序组成，本程序源码参考了Qt5.6.1的modbus源代码提取去其中的串口通信部分。代码更易读，VirtualComTest.py这个文件用于虚拟串口，需在终端下执行 python VirtualComTest.py即可得到两个虚拟链接的串口端口，方便软件代码的调试。程序中应用了modbus的HoldingRegisters数据格式，以十六进制发送和读取数据。
- 2020-12-06下载
- 积分：1
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英飞凌IGBT驱动培训资料
在电力电子装置中的一个重要组成部分,输入连接到控制电路的PWM信号输出端，输出连接到装置各IGBT的门极和发射极，将装置中的控制电路产生的数字PWM信号进行隔离传输和电平转换和功率放大,实现控制电路对IGBT进行开通和关断动作的控制，从而实现装置的功率变换功能。InfineontechnologiesIGBT Gate Drive: Power Suppliesa Gate driving voltage for IGBT+15Vturn-on is normally +15VDriver>□1a Gate driving voltage for IGBTOVturn-off can be oV or negativeWith Single Power Supply5V to-15V)a Negative gate driving voltage+15Vhelps IGBt switch off fasterremain in off state but itDriverneeds dual power suppliesOVWhether to use oV or negativegate driving voltage depends15VWith Dual Power Supplieson the requirement on costZH Liang - Al APperformance05Dec2003agefor internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: InterfaceOpto-couplers is commonly used as interfacingdevices for applications where both signaltransmission and potential isolation are requiredOpto-couplers offers reliable isolation between IGBT(high-potential)& micro-controller(low-potential)Opto-couplers has long signal delay(us)and isexpensiveIsolation +VDpCCMicroDrivercontrollerZH Liang - Al AP05Dec2003Page 6for internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: Half-bridge DriveStandard configuration: 2 drivers, 2 power supplies, 2 opto-couplersAdvantages: standard, reliableDisadvantages: using opto-couplers, higher system costIsolation +VDDlCC1DriverCC1MicrocontrollerDD2+VCC2DriverCC2ZH Liang - Al AP05Dec2003Page 7for internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: Half-bridge DriveIn half-bridge IGBT drive, opto-couplers offer two functions(1)safety isolation &(2) shifting the potential of the gatesignal from uc potential to high-side potentialIf safety isolation between IGBT& micro-controller is notneeded, then"Level Shift" can replace opto-coupling andrealize function(2)OptoHigh-sideHigh-sidecouplerDriverIGBTMicro-Opto-LoW-sideLow-sidecontrollercouplerDriverIGBTZH Liang - Al AP05Dec2003Page 8for internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive Level shiftI FeaturesHVc(600V/1200V)沿PULSERFILTERShort Signal DelayPULSE■Cost- effectiveGEN■ No Safety Isolationevel Shift Half-bridge DriverI BenefitHigh-side““°IGBTO Saving Opto-couplersLevel(lower system costShiftMicro● Wider range ofcontrollerLevelLow-side■■■■■直■口m留■Switching FrequencyShiftIGBT(higher flexibility)ZH Liang - Al AP05Dec2003Page 9for internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: CLTNEWO CLT-Coreless Transformer (for signal transmissionu Coils(Primary Secondary Side)realized on SiliconO Short Signal Delay (allowing high or low switching frequencyu Lower Cost(compared to 1200V level-shift driver日 Safety IsolationCLT Half-bridge DriverHigh-sideCLT Single DriverIGBTCLTMicro-controllerCLTIGBTMicro-controllerLoW-sideIGBTZH Liang - Al AP05Dec2003agefor internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: Boot-strapBoot-strap circuit includes only a diode and a capacitora In half-bridge drive, the boot-strap circuit can replace the high-sidepower supply and make single-supply operation possibleWhen the low-side IGBT (or FWD)is on, the diode is forwardbiased and the capacitor is charged by the low-side power supplyvia the low-side IGBT and stores the energyWhen the low-side IGBt(and FWD)is OFF, the diode is reversebiased and blocks the dc-bus voltage to protect the low-sidecircuit. Meanwhile, the capacitor supplies energy to the high-sidedriverThe boot-strap capacitance should be high enough to keep thesupply voltage stable Capacitance needed can be calculatedbased on the working conditions and device parametersZH Liang - Al AP05Dec2003agefor internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: Boot-strap circuitConventional2心菲*|■3 high-side power supplies■1|oW- side power supplyUsing boot-strap circuit心体心心●3 diodes& capacitorso 1 low-side power supplyFeaturesa Diode: ultra-fast recoverya Capacitor: general-purposed ITAa Dependent on low-side IGBTBenefitsSaving 3 PS(transformer cost)22ZH Liang - Al AP05Dec2003Reducing wiring connectionPage 12for internal use onlyInfineon Technologies Asia Pacific
- 2020-12-11下载
- 积分：1
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学校人力资源管理系统
学校人力资源管理系统 运用VC++和SQL的软工课设 包括对教师的管理以及院系的管理 代码 数据库及操作方法很全
- 2021-05-06下载
- 积分：1
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micropython中文教程（嵌入式详细教程）
详细讲解了MicroPython有多种不同硬件平台的移植版本，包括STM32F4/F7/L4系列、ESP8266、ESP32、NXP MK20DX256、microchipPIC33、Infineon XMC4700、nRF51822、CC3200、MSP432等，详细的描述了LED、ADC、RTC、PWM、UART、IIC、SPI、SD卡各种外设、底层驱动的编写和各种对应的例程，简单易懂，上手容易。
- 2020-06-25下载
- 积分：1
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西门子840D高级编程手册
目标客户该手册供以下人员使用：• 编程人员• 设计人员标准功能范畴在该编程说明中描述了标准的功能范畴。机床制造商增添或者更改的功能，由机床制造商资料进行说明。
- 2020-12-12下载
- 积分：1
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verilog4位十进制计数器
能设初始值，能实现加1，加2操作，并能在数码管上显示
- 2021-01-05 10:38:54下载
- 积分：1
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用verilog实现msk信号调制器.zip
【实例简介】msk调制顶层模块msk_top.v
module msk_top(clk_100MHz, clk_2MHz, clk_1MHz, reset,x,msk_out);
input clk_100MHz;
input clk_2MHz;
input clk_1MHz;
input reset;
input x;
output [32:0] msk_out;
wire b_i， b_q;
wire [15:0] sine, cosine;
//调用亟待数据处理模块
S2p s2p(
.clk(clk_2MHz), clk_div2（clk_1MHz），reset(reset),
.x(x),.b_i(b_i),.b_q(b_q));
//调用I,Q路加权模块iqsin.v
Iqsin iqsin(
.clk(clk_100MHz)，. reset(reset), .b_i(b_i),.b_q(b_q),
.SINE(sine),COSINE(cosine));
//载波调制相加模块 iqmodu.v
Iqmodu iqmodu(
.clk(clk_100MHz), .i_i(cosine),.q_q(sine),.msk_out(msk_out));
endmodule
- 2021-11-24 00:36:46下载
- 积分：1
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空时二维自适应处理的杂波
该程序仿真了王永良编写的《空时二维自适应处理》中的杂波，画出了杂波的亮度图和协防差矩阵
- 2021-05-06下载
- 积分：1
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大学生创业计划书的几份模板供大家参考
为了方便学生对于创业类技术型策划书的参考，word格式，比较实用
- 2020-12-08下载
- 积分：1
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心率计，用proteus 仿真
课程设计，心率监护仪原理，简单的方针，可以借鉴借鉴
- 2021-05-06下载
- 积分：1
