Analogue measurement data detection system and battery voltage detection system

An analogue measurement data detection system comprising:

• an amplifier configured to amplify an analogue measurement signal inputted from an analogue measurement subject, and output the amplified signal;
• a reference voltage generation circuit configured to generate and output a reference voltage;
• and
• an analogue/digital converter configured to compare the analogue measurement signal outputted from the amplifier with the reference voltage outputted from the reference voltage generation circuit, and based on a differential voltage between the analogue measurement signal and the reference voltage, generate and output a digital measurement signal corresponding to the analogue measurement signal, wherein
• the reference voltage generation circuit is configured to cause the reference voltage to have such a temperature characteristic as to compensate for all of temperature characteristics of at least the amplifier, the analogue/digital converter, and the reference voltage generation circuit.

A battery voltage detection system comprising:

• a selector configured such that terminal voltages of a plurality of battery cells connected in series in a battery are inputted to the selector, the selector multiplexing the terminal voltages based on a selector signal and outputting a resultant analogue signal;
• a reference voltage generation circuit configured to generate and output a reference voltage;
• an analogue/digital converter configured to compare the analogue signal outputted from the selector with the reference voltage outputted from the reference voltage generation circuit, and based on a differential voltage between the analogue signal and the reference voltage, generate and output a digital signal corresponding to the analogue signal;
• and
• a digital processor configured to convert an output from the analogue/digital converter into digital values corresponding to cell voltages of the plurality of respective battery cells, wherein
• the reference voltage generation circuit is configured to cause the reference voltage to have such a temperature characteristic as to compensate for all of temperature characteristics of at least the selector, the analogue/digital converter, and the reference voltage generation circuit.

A battery voltage detection system comprising:

• a selector configured such that terminal voltages of a plurality of battery cells connected in series in a battery are inputted to the selector, the selector multiplexing the terminal voltages based on a selector signal;
• an amplifier configured to amplify an output from the selector, and output a resultant analogue measurement signal;
• a reference voltage generation circuit configured to generate and output a reference voltage;
• an analogue/digital converter configured to compare the analogue measurement signal outputted from the amplifier with the reference voltage outputted from the reference voltage generation circuit, and based on a differential voltage between the analogue measurement signal and the reference voltage, generate and output a digital measurement signal corresponding to the analogue measurement signal;
• a digital processor configured to convert an output from the analogue/digital converter into digital values corresponding to cell voltages of the plurality of respective battery cells, wherein
• the reference voltage generation circuit is configured to cause the reference voltage to have such a temperature characteristic as to compensate for all of temperature characteristics of at least the selector, the amplifier, the analogue/digital converter, and the reference voltage generation circuit.