Pt100 how connected with 51 single chip microcomputer, need what kind of AD module, bosses have rele-CodePudding

Pt100 how connected with 51 single chip microcomputer, need what kind of AD module, bosses have related program and circuit diagram

CodePudding user response:

Add a ADAD with constant current output

CodePudding user response:

Series resistance, connect a simple adc, adc0809

CodePudding user response:

refer to the second floor fog oasis response:

series resistance, connect a simple adc, adc0809

Excuse me, need to build a bridge circuit

CodePudding user response:

reference bangbang reply: 3/f

Quote: refer to the second floor fog oasis response:
series resistance, connect a simple adc, adc0809

Excuse me, you need to build a bridge circuit

no, just a partial pressure of the voltage measurement

CodePudding user response:

Excuse me, if direct use 0 to 5 v output temperature transmitter after ad0809 can also access to the single chip microcomputer

CodePudding user response:

fog oasis reference 4 floor response:

Quote: refer to the third floor bangbang response:

Quote: refer to the second floor fog oasis response:
series resistance, connect a simple adc, adc0809

Excuse me, you need to build a bridge circuit

no, just a partial pressure of voltage measurement line

Excuse me, if direct use 0 to 5 v output temperature transmitter is the ad0809 access SCM can also?

CodePudding user response:

refer to 6th floor bangbang response:

Quote: fog oasis reference 4 floor response:

Quote: reference bangbang reply: 3/f

Quote: refer to the second floor fog oasis response:
series resistance, connect a simple adc, adc0809

Excuse me, you need to build a bridge circuit

no, just a partial pressure of voltage measurement line

Excuse me, if direct use 0 to 5 v output temperature transmitter is the ad0809 access SCM can also?

Can, his ref is 5 v

CodePudding user response:

Should have the AD conversion chip microcontroller development board, you can only build PT100 peripheral circuit, baidu search, generally is bridge op-amp, filter, voltage signal directly sent to the single-chip analog-to-digital conversion

CodePudding user response:

fog oasis reference 7 floor response:

Quote: refer to the sixth floor bangbang response:

Quote: fog oasis reference 4 floor response:

Quote: refer to the third floor bangbang response:

Quote: refer to the second floor fog oasis response:
series resistance, connect a simple adc, adc0809

Excuse me, you need to build a bridge circuit

no, just a partial pressure of voltage measurement line

Excuse me, if direct use 0 to 5 v output temperature transmitter is the ad0809 access SCM can also?

Possible, he is the ref 5 v

Bosses, could you tell me why can't I measured data updated in real time, ad0809 output of digital quantity can not be changed along with the change of temperature

CodePudding user response:

ST for conversion start signal, when jumping along the ST, all internal registers reset; Under the edge, begins to turn on A/D
Change; During the period of transformation, ST should maintain a low level, EOC for conversion signal the end of the turn when the EOC for high electricity at ordinary times, show that
Change the end; Otherwise, it shows that the ongoing A/D conversion, OE as the output enable signal, is used to control the three output latch to
MCU output data by converting, OE=1, the output data by converting; OE=0, the output cable is high resistance
State, D7 - D0 for digital output line,

CodePudding user response:

references 9 f bangbang response:

Quote: fog oasis reference 7 floor response:

Quote: refer to the sixth floor bangbang response:

Quote: fog oasis reference 4 floor response:

Quote: refer to the third floor bangbang response:

Quote: refer to the second floor fog oasis response:
series resistance, connect a simple adc, adc0809

Excuse me, you need to build a bridge circuit

no, just a partial pressure of voltage measurement line

Excuse me, if direct use 0 to 5 v output temperature transmitter is the ad0809 access SCM can also?

Possible, he is the ref 5 v

Bosses, could you tell me why can't I measured data updated in real time, ad0809 output of digital quantity can not be changed along with the change of temperature

CodePudding user response:

Thank you, can you add my qq: 1989073253

CodePudding user response:

fog oasis reference 11 floor response:

Quote: references 9 f bangbang response:

Quote: fog oasis reference 7 floor response:

Quote: refer to the sixth floor bangbang response:

Quote: fog oasis reference 4 floor response:

Quote: refer to the third floor bangbang response:

Quote: refer to the second floor fog oasis response:
series resistance, connect a simple adc, adc0809

Excuse me, you need to build a bridge circuit

no, just a partial pressure of voltage measurement line

Excuse me, if direct use 0 to 5 v output temperature transmitter is the ad0809 access SCM can also?

Possible, he is the ref 5 v

Bosses, could you tell me why can't I measured data updated in real time, ad0809 output of digital quantity can not be changed along with the change of temperature

ST for conversion start signal, when jumping along the ST, all internal registers reset; Under the edge, begins to turn on A/D
Change; During the period of transformation, ST should maintain a low level, EOC for conversion signal the end of the turn when the EOC for high electricity at ordinary times, show that
Change the end; Otherwise, it shows that the ongoing A/D conversion, OE as the output enable signal, is used to control the three output latch to
MCU output data by converting, OE=1, the output data by converting; OE=0, the output cable is high resistance
State, D7 - D0 for digital output line,

Thank you, can you add my qq: 1989073253