Mobile phone battery life test, the original with these hardware related! Tengfang Zhongke TFC
Extending the battery life of electronic products is the eternal pursuit of the electronics industry. So the first thing to do to extend battery life is to be able to accurately measure the total power consumption of the device. Today, we will talk about the test instruments and signal connections in the low-power verification.
There are a variety of instruments that perform low-power measurements. We use modular measurement solutions as an example. The most common voltage measurement devices are digital multimeters (DMM), oscilloscopes, and data acquisition (DAQ) devices.
Among them, the digital multimeter is one of the most common low-level voltage measurement instruments, a wide range of functions, usually used to correct voltage uncertainty, can provide accurate measurement readings in active power and low-power mode. Best choice for performing low power measurements!
Oscilloscope: It is also a commonly used instrument for power measurement. It is characterized by large bandwidth and high sampling rate. It is especially good at capturing dynamic signals and is suitable for measuring and characterizing dynamic changes in equipment power consumption. Can be used with low power measurement.
DAQ, data acquisition equipment, is usually used to collect voltage and data in multiple channels. It is characterized by low cost, but its accuracy is not high enough compared with multimeter and oscilloscope. However, some high-end NI models do not need to enable offset reset calibration, which can significantly improve measurement accuracy and can also be used for low-power measurement.
So when using these measuring instruments, how should the equipment be connected?
If multimeter and oscilloscope are used, the test channels are one-to-one or many-to-one. Once multi-channel measurement is needed, physical switching must be carried out.
In the low-power measurement, the voltage fluctuation is weak, in order to ensure the stability of the current/voltage signal, physical switching needs to pay attention to the bandwidth, attenuation, delay, impedance and other electrical characteristics. In domestic brands, compared with ordinary heavy-duty connectors, attention is paid to high voltage and high current, but the plug-in life is low. Tengfang Zhongke's TFC connector and interface platform are relatively more suitable. It can run 1.2GHz signals with 5A pinhole, the attenuation value of digital signal channel is less than 0.2db(2MHz), and the time delay is less than 15ns.
Different interface forms can be selected according to the number of channels:
1. If the number of signal channels is less than 320, this handheld high-density connector can be used, which is convenient to plug and unplug, saves time and effort, and has a service life of up to 20000 times. And can also support common signal, fiber, coaxial, high-power and pneumatic connections at the same time
2. If the number of signal channels is greater than 320 channels, a large-scale universal interface platform mass interconnection system can be selected, and the number of signal channels can reach up to 10000 channels. With labor-saving handle design, plug life up to 20000 times, but also support a variety of signal types.
If DAQ data acquisition equipment is used, although one-to-many test channels can be realized, the requirements for cable materials will be higher and the requirements for bandwidth, attenuation, delay and impedance will be higher due to insufficient accuracy of the equipment. Here recommend the use of EPM cables, digital and analog signal separation design features. The internal is also a multi-strand separate shield separate isolation, signal transmission efficiency greatly increased.
No matter what kind of test method is used, the decision of battery life is still in the hands of manufacturers. Only by improving product technology and paying attention to product details is the top priority of product durability.
recommend News
Contact Information
Address: Building A38, U Valley, Liandong, Baishazhou, Wangcheng Economic and Technological Development Zone, Changsha City, Hunan Province,China
Public number | tremolo number
Welcome to pay attention to us