Mobile terminal and method for measuring power consumption of mobile terminal
A mobile terminal, power consumption technology, applied in the field of electronics, can solve the problems of inconvenient portability, large size of instruments and equipment, and achieve the effects of convenient power consumption, low cost, and convenient measurement
Active Publication Date: 2015-12-16
HUIZHOU TCL MOBILE COMM CO LTD
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Problems solved by technology
Traditional power consumption measurement requires special instruments and equipment for measuring power consumption, which are bulky and inconvenient to carry
Method used
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[0018] For ease of presentation, the first embodiment of the method for measuring power consumption of a mobile terminal in the present invention will be described in conjunction with a charging circuit of a mobile terminal in the prior art, but it is worth noting that the method for measuring power consumption of a mobile terminal in the present invention is not only It is limited to this charging circuit, and other charging circuits with the same design idea are also applicable.
[0019] refer to figure 1 , figure 1 It is a circuit diagram of a charging circuit of a prior art mobile terminal. The design idea of the charging circuit of the mobile terminal in the prior art is as follows: figure 1 As shown, the charging circuit includes: a power management chip PMIC, a P-channel field effect transistor Q1, a diode D1, a charging detection resistor R1 and an internal battery BAT. Among them, the power management chip PMIC is connected to the gate G of the P-channel field ef...
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The invention discloses a mobile terminal and a method for measuring power consumption of the mobile terminal. The method comprises the steps of: when the mobile terminal is electrically disconnected with an internal battery and is electrically connected with an external power supply, supplying power to the mobile terminal; sampling to obtain a current value of the current passing through a charging detection resistor of a charging circuit inside the mobile terminal; and calculating according to the current value to obtain the power consumption of the mobile terminal. According to the invention, the external power supply is adopted to supply power to the mobile terminal, and the internal battery is prohibited to supply power to the mobile terminal, so that the current passing through the charging detection resistor is the consumption current of the mobile terminal; and the sampling operation is carried out to obtain the current value on the detection resistor, then the calculating operation is performed to obtain the power consumption of the mobile terminal, so that heavy instrument equipment special for measuring the power consumption can be avoided being used, and the power consumption of the mobile terminal can be conveniently measured. In the technical scheme that the power consumption is measured by the original circuit of the mobile terminal, the mobile terminal does not need any change in hardware even, and the method is easy to realize and low in cost.
Description
technical field [0001] The invention relates to the field of electronic technology, in particular to a mobile terminal and a method for measuring power consumption of the mobile terminal. Background technique [0002] A mobile terminal, as the name implies, refers to a computer device that can be used on the move. The mobile terminal is usually out of the charging environment during use, so the use and standby time of the mobile terminal are important technical indicators. [0003] Among the many factors that determine the use and standby time of mobile terminals, power consumption is one of the most important indicators. Therefore, power consumption measurement is an important test before leaving the factory. Traditional power consumption measurement requires special instruments and equipment for measuring power consumption, which are bulky and inconvenient to carry. However, in practical applications, it is often necessary to detect and record the power consumption of t...
Claims
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IPC IPC(8): G01R21/06
Inventor 顾建良
Owner HUIZHOU TCL MOBILE COMM CO LTD