光伏电池测控系统python代码

'''
硬件keithley万用表和程控电源
visa是VXIplug&play系统联盟制定的一套标准。
python实现VISA，形成pyviva模块
'''
###IV测试系统的部分程序代码
from visa import *
from string import *
from math import *
class CurrentMiter(Instrument):
    CurrentValue=[]
    datapoints=1
    Atrr=""
    def __init__(self,DelayTime=0.2,DPs=111):
        self=instrument("GPIB::23")
        self.timeout=30
        datapoints=DPs
        self.delay=DelayTime  

        self.write("*Rst")
        self.write(":SYST:PRES")
        self.write(":FORM:DATA ASCII")
        self.write(":TRIgger:delay 0")
        self.write(":trigger:source external")
        self.write(":INITiate:CONTinuous On")
        self.write(":trigger:count 1")
        self.write(":Data:clear")
        self.write(":data:points %d" % datapoints)
        self.write(":data:feed:control next")
        self.write(":data:feed sense")
        self.write(":FUNC 'CURRent:DC'")
        self.write(":CURRent:DC:RANGe:Auto 1")
        self.write(":CURRent:DC:DIGits 7")
        self.write(":CURRent:DC:AVERage:STATe off")
    def newAsk(self,cmd):
        return self.ask_for_values(cmd) 

class SourceGenerator(Instrument):
    VRangeSelect=""
    VStart=1
    VStop=0
    VStep=1
    TimeStep=1
    def __init__(self,DelayTime=0.2,V0=1.0,Vt=-0.1,Vs=0.01,Ts=0.1,Vr=4):   146
        self=instrument("GPIB::1")
        self.delay=DelayTime
        self.VRangeSelect=Vr
        self.VStart=V0
        self.VStop=Vt
        self.VStep=Vs
        self.TimeStep=Ts
        self.write("C")
        self.write("RP1")
        self.write("PM2")
        self.write("V%s" % str(self.VRangeSelect))
        cmd="SP"+str(self.TimeStep)+"SN"+str(self.VStart)+","+str(self.VStop)+","+str(self.VStep)+ " ST0"
        self.write(cmd)
        Points=abs((self.VStop - self.VStart)/ (self.VStep))+1
        K2000=CurrentMiter(0.2,Points)
        self.write("E")
        self.write("*CLS ISE1 *SRE8 S0")
        self.write("*TRG")
        self.wait_for_srq()
##主程序
from IVKeithley import *
from IVSource import *
from visa import *
if __name__ ="__main__":
    Keithley=CurrentMiter(0.1,10)
    Source=SourceGenerator(0.2)
    Source.StartTest()
    Source.write("*TRG")
    #Source.write("H")