Acquisition device for dynamic power consumption detection and application method thereof

Abstract

The invention belongs to the power consumption detection technology field, relates to a power consumption analysis device and especially relates to an acquisition device for dynamic power consumptiondetection and an application method thereof. The device includes a power supply management circuit, a signal conditioning circuit, an ADC, a MCU, a serial port circuit, a USB interface circuit and anupper computer. The power supply management circuit provides power for an entire load of an analyzer. The signal conditioning circuit collects a current to be measured and conditions a collected current signal, and a signal output end of the signal conditioning circuit is connected to the ADC. The ADC amplifies the signal and converts an electrical signal into a digital signal, and the signal output end is connected to the MCU. The MCU reads a sampled value, converts the value into a current value and sends the value to the upper computer in real time via the serial port circuit or the USB interface circuit.

Description

technical field [0001] The invention belongs to the technical field of power consumption detection, and relates to a power consumption analysis device, in particular to a collection device for dynamic power consumption detection and a usage method thereof. Background technique [0002] This patent is mainly developed for the detection of power consumption of heat meters, but it is also applicable to similar instruments with low power consumption and dynamically changing power consumption. Since this type of equipment is mainly powered by a battery, and the output voltage of the battery is basically constant, the power consumption is generally characterized by the operating current. [0003] From the working method of the heat meter, it can be seen that the power consumption of the heat meter has the following three main characteristics: [0004] 1. The working current range is large, and the instantaneous current when collecting data can reach hundreds of microamps to sever...

AI Technical Summary

Problems solved by technology

[0005] 2. The time span is large, the flow collection period is generally a few seconds, the temperature collection period is relatively longer, generally tens of seconds, and each collection is only tens of milliseconds, if you want to observe the complete working current changes of the heat meter, on the one hand, you need Sufficient working current detection rate, on the other hand, requires sufficient continuous acquisition time, so there is a high requirement for the storage depth of the detection equipment;

[0017] To sum up, each method has its own advantages and disadvantages. The oscilloscope is easy to see the development trend of the waveform, and its sampling frequency is much higher than other devices, but its storage depth and measurement accuracy are not good; the sampling frequency of the DC power analyzer Both performance and accuracy are the best, but its price is high; using a current clamp can minimize the impact on the circuit, but its measurement accuracy is not good; 6 1 / 2 Digital multimeters have advantages in accuracy, but insufficient dynamic performance

Images