CN102929380B - Method and device for reducing power consumption of mobile terminal, and terminal - Google Patents

Abstract

The invention discloses a method, device and terminal for reducing power consumption of a mobile terminal. The method includes: detecting the working state signal of the system; selecting a corresponding power saving mode according to the working state signal, and The mode sets the control pin of the digital baseband chip DBB to control the power control pin on the power drive module PM to make the PM enter the corresponding power saving mode. The present invention can realize that multiple power modules included in the power drive module PM are turned off according to different working states of the system, and multiple different normally-on power modules enter a low power consumption mode, thereby allowing the system to have more time to sleep, thereby greatly The power consumption of the system is reduced, and the standby time of the mobile terminal is prolonged.

Description

Method, device and terminal for reducing power consumption of mobile terminal

technical field

The present invention relates to the field of communication technologies, in particular, to a method, device and terminal for reducing power consumption of a mobile terminal.

Background technique

With the continuous strengthening and improvement of the functions of mobile terminals (such as mobile phones), they play an increasingly important role in people's lives. Therefore, how to reduce the power consumption of mobile phones so that the application standby time of mobile phones can be further improved It has become one of the important issues that mobile phone manufacturers need to solve at present.

Generally, low power consumption schemes for mobile phones include low power consumption in the working state and low power consumption in the idle state. Low power consumption in the working state means: when a device is idle, turn off its clock or power to achieve The purpose of reducing power consumption, such as turning off the backlight of the mobile phone or the keyboard when not in use, and turning off the power and clock of the camera module when the camera function is not in use. The low power consumption in the idle state refers to: when the peripherals and applications of the entire system are in the idle state, the entire system enters the sleep state, that is, all the clocks or power supplies that can be turned off in the system are turned off, and those that cannot be turned off are turned off. Enter a low power mode of operation.

Therefore, how to enable the mobile phone to enter a corresponding low power consumption mode in various application scenarios, and turn off the corresponding clock or power supply is the key to realize the low power consumption of the mobile phone.

The power management solution provided by the prior art can only operate one power module at a time, and it is impossible to turn off corresponding multiple power modules according to different scenarios, so that multiple power modules enter a low power consumption mode, resulting in low power consumption of the system. big. For example, when the power module of some power chips is turned off, the value is written into the power chip through I2C (Inter-Integrated Circuit, two-wire serial bus), so that the corresponding power module is turned off. However, the disadvantages of this technical solution Yes: It is more complicated to operate I2C, and it takes a certain amount of time to operate I2C to turn off the power module, which will inevitably reduce the sleep time of the system. In addition, if you want to turn off multiple power modules at the same time, you need to operate I2C multiple times, which will greatly reduce the system time. sleep time, resulting in increased power consumption, and under the condition that the system has strict time requirements, it will also affect the running sequence of the system.

Contents of the invention

In order to solve the problem in the prior art that multiple I2C operations are required, resulting in reduced system sleep time and increased system power consumption, the purpose of the present invention is to provide a method, device and terminal for reducing power consumption of a mobile terminal.

In order to achieve the purpose of the present invention, the present invention adopts the following technical solutions to realize:

A method for reducing power consumption of a mobile terminal, comprising:

Detect the working status signal of the system;

Select the corresponding power-saving mode according to the working state signal, and set the control pin of the digital baseband chip DBB according to the power-saving mode to control the power control pin on the power drive module PM to make the PM enter the corresponding power-saving mode .

Preferably, before performing all the steps, the method for reducing power consumption of the mobile terminal further includes:

After the system is powered on, configure the correspondence between the corresponding power-saving modes adopted by the PM in different working states of the system.

Preferably, the step of detecting the working status signal of the system includes:

After the system works normally and enters the corresponding working mode, the system sets the status pin of DBB;

Detect the status pin of DBB to obtain the working status signal of the system.

Preferably, after performing "selecting the corresponding power-saving mode according to the working state signal, and setting the control pin of the digital baseband chip DBB according to the power-saving mode, to control the power control pin on the power drive module PM to make PM After entering the corresponding power saving mode" step, the method for reducing the power consumption of the mobile terminal also includes:

The PM feeds back the current power saving mode information it adopts to the DBB.

Preferably, after performing the step of "PM feeds back current power saving mode information it adopts to DBB", the method for reducing power consumption of the mobile terminal further includes:

When an interrupt signal is detected, the system exits power saving mode.

A device for reducing power consumption of a mobile terminal, comprising:

The power management module is used to detect the working state signal of the system; it is further used to select the corresponding power saving mode according to the working state signal, and set the control pin of the digital baseband chip DBB according to the power saving mode to control the power drive The power control pin on the module PM makes the PM enter the corresponding power saving mode;

The power drive module PM is configured to enter a corresponding power saving mode according to the setting of the control pin of the DBB by the power management module.

Preferably, the power management module includes:

The power-saving mode setting module is used to configure the corresponding relationship between the corresponding power-saving modes adopted by the PM in different working states after the system is powered on, and is used to set The above working status signal selects the corresponding power saving mode.

Preferably, the power management module includes:

The state signal detection module is used to detect the working state signal of the system.

Preferably, the step of detecting the working state signal of the system by the state signal detection module is:

After the system works normally and enters the corresponding working mode, the system sets the status pin of DBB;

Detect the status pin of DBB to obtain the working status signal of the system.

Preferably, the PM is also used to feed back the current power saving mode information it adopts to the DBB.

A mobile terminal, which includes the device for reducing power consumption of the mobile terminal as described above, the device includes:

The power management module is used to detect the working state signal of the system; it is further used to select the corresponding power saving mode according to the working state signal, and set the control pin of the digital baseband chip DBB according to the power saving mode to control the power drive The power control pin on the module PM makes the PM enter the corresponding power saving mode;

The power drive module PM is configured to enter a corresponding power saving mode according to the setting of the control pin of the DBB by the power management module.

It can be seen from the above-mentioned technical solution of the present invention that the present invention can realize that multiple power modules included in the power drive module PM are turned off according to different working states of the system, and multiple different normally-on power modules enter a low power consumption mode (such as PFM Low power consumption mode), so that the system can have more time to sleep, thereby greatly reducing system power consumption and prolonging the standby time of mobile terminals (such as mobile phones).

Description of drawings

FIG. 1 is a schematic flowchart of a method for reducing power consumption of a mobile terminal provided by an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a device for reducing power consumption of a mobile terminal provided by an embodiment of the present invention;

Fig. 3 is a schematic flowchart of setting different low power consumption modes according to a power management module in an actual application provided by an embodiment of the present invention.

The realization of the purpose of the present invention, functional characteristics and excellent effects will be further described below in conjunction with specific embodiments and accompanying drawings.

Detailed ways

The technical scheme of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific examples, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention .

As shown in Figure 1, a method for reducing power consumption of a mobile terminal provided by an embodiment of the present invention includes the following specific steps:

S20, detecting the working status signal of the system;

S30. Select the corresponding power-saving mode according to the working state signal, and set the control pin of the digital baseband chip DBB according to the power-saving mode to control the power control pin on the power drive module PM to make the PM enter the corresponding power-saving mode. electric mode.

In this embodiment, before performing step S20, the method for reducing power consumption of the mobile terminal further includes:

S10. After the system is powered on, configure the corresponding relationship between the corresponding power saving modes adopted by the PM in different working states of the system. For example, according to different application scenarios, each power saving mode makes each power module of the PM either in the off state, in the PFM state, or in the normal working state (the power saving mode is ineffective at this time).

In this embodiment, in the step S20, the step of detecting the working status signal of the system includes:

S201. After the system works normally and enters the corresponding working mode, the system sets the status pin of DBB;

S202. Detect the status pin of the DBB to obtain a working status signal of the system.

In this embodiment, after step S30 is performed, the method for reducing power consumption of the mobile terminal further includes:

S40. The PM feeds back information about the current power saving mode adopted by the PM to the DBB.

In this embodiment, after performing the step S40, the method for reducing the power consumption of the mobile terminal further includes:

S50. When an interruption signal is detected, the system exits the power saving mode.

Referring to FIG. 2, an apparatus for reducing power consumption of a mobile terminal provided by an embodiment of the present invention includes:

The power management module is used to detect the working state signal of the system; it is further used to select the corresponding power saving mode according to the working state signal, and set the control pin of the digital baseband chip DBB according to the power saving mode to control the power drive The power control pin on the module PM makes the PM enter the corresponding power saving mode;

The power drive module PM is configured to enter a corresponding power saving mode according to the setting of the control pin of the DBB by the power management module.

In this embodiment, the power management module includes:

The power-saving mode setting module is used to configure the corresponding relationship between the corresponding power-saving modes adopted by the PM in different working states after the system is powered on, and is used to obtain the work of the system sent by the state signal detection module After receiving the status signal, select the corresponding power saving mode according to the working status signal.

For example, according to different application scenarios, each power saving mode makes each power module of the PM either in the off state, in the PFM state, or in the normal working state (the power saving mode is ineffective at this time).

In this embodiment, the power management module further includes:

The state signal detection module is used to detect the working state signal of the system. After detecting the working state signal of the system, it sends the signal to the power saving mode setting module connected thereto.

In this embodiment, the steps for the state signal detection module to detect the working state signal of the system are:

1) After the system works normally and enters the corresponding working mode, the system sets the status pin of DBB;

2) Detect the status pin of DBB to obtain the working status signal of the system.

In this embodiment, the PM is also used to feed back information about the power saving mode currently adopted by the PM to the DBB.

It can be seen from the technical solution of the method and device for reducing the power consumption of the mobile terminal provided by the above-mentioned embodiments of the present invention, continuing to refer to FIG. (PPP2) includes two modules: power-saving mode setting module (PPP4) and status signal detection module (PPP3). In addition, the power control pin of the power drive module PM (PPP5) is connected to the digital baseband chip DBB (PPP1). Control pins are connected.

The power-saving mode setting module (PPP4) sets various power-saving modes of the PM. During power-on initialization, configure the working status of each power module of the PM in various power-saving modes. Each power-saving mode is based on different application scenarios. Make each power module of the PM either in the off state, in the PFM state, or in the normal working state.

After the status signal detection module (PPP3) detects the working status signal of the system, it notifies the power saving mode setting module which power saving mode to choose, and the power saving mode setting module sets the control pin on the DBB according to the power saving mode to control the PM power supply Control the pin to enable the corresponding power-saving mode, so that each BUCK, LDO and DCDC on the PM enters the corresponding low-power mode, and the PM feeds back the current power-saving mode to PM_CTRL_MDL.

When there is an interrupt, the hardware automatically restores each BUCK, LDO and DCDC of the PM to the normal working mode. In this way, multiple power modules can be turned off according to different scenarios, and multiple different normally-on power modules can enter low-power consumption mode, and the system can have more time to sleep, thereby greatly reducing system power consumption and extending mobile phone standby time .

Referring to FIG. 3 , FIG. 3 is a schematic flowchart of setting different low power consumption modes according to the power management module in a practical application of the present invention.

The following describes the process of the system entering different low power consumption according to Figure 3:

Step S210: Power on and start up. During initialization, the power-saving mode setting module (PPP4) configures the working status of each power module of the PM in various power-saving modes. Each power-saving mode makes each power module of the PM (PPP5) The power module is either in the off state, or in the PFM state, or in the normal working state (the power saving mode does not work at this time);

Step S220: the system works normally, enters a certain working mode, and sets the status pin on the DBB (PPP1);

Step S230: The state signal detection module (PPP3) detects the state pin on the DBB (PPP1), and then notifies the power saving mode setting module (PPP4) which corresponding power saving mode to enter;

Step S240: The power-saving mode setting module (PPP4) determines the power-saving mode to enter according to the status pin on the DBB (PPP1) detected by the status signal detection module (PPP3), and sets the control pin on the DBB to control the PM on the The power control pin makes the PM enter the corresponding power saving mode;

Step S250: The PM detects the state of the power control pin, and the hardware automatically enables the working modes of each power module of the PM in the power saving mode in step S240, and the PM feeds back the currently entered power saving mode to the PM_CRTL_MDL power management module (PPP2);

Step S260: When the interrupt comes, the system exits the power saving mode, and the hardware automatically makes each BUCK, LDO and DCDC of the PM in the normal working mode;

Step S270: Next, the system repeats steps S220 to S260, so that the system continuously enters a low power consumption state.

In the specific implementation, the control pins on the DBB can be various. Here, it is assumed that the control pins on the DBB are GPIO (General Purpose Input Output, general purpose input/output), and the number of GPIOs depends on the number of PM power control pins. Depending on the number, you can decide to let the PM provide several PM power control pins according to the demand. According to the number of power control pins provided by the PM, 2 ^M power saving modes can be set for 2 ^M different application scenarios.

Assume here that there are three power control pins PWR3, PWR2, and PWR1 on the PM, then GPIO3, GPIO2, and GPIO1 on the DBB are connected to the power control pins PWR3, PWR2, and PWR1 respectively. At this time, you can set the module in power-saving mode (PPP4 ) to set 8 power-saving modes, which are used in 8 different working scenarios. For example, you can set them here:

Power saving mode 1: PWR3, PWR2, PWR1 are 000, when the system is in the idle state of the whole machine, all peripherals are not used;

Power saving mode 2: PWR3, PWR2, PWR1 are 001, when playing MP3, there is no other operation;

Power saving mode 3: PWR3, PWR2, PWR1 are 010, playing mobile single board games;

Power-saving mode 4: PWR3, PWR2, PWR1 are 011, the physical layer has tasks, but there is no task on the ARM side to enter WFI mode;

Power saving mode 5: PWR3, PWR2, PWR1 are 100, during a call;

PWR3, PWR2, PWR1 are 101, 110: reserved and can be set according to the specific situation;

PWR3, PWR2, PWR1 are 111: normal working mode, all power supplies are in normal working mode.

Here it is assumed that there are the following power modules on the PM:

BUCK1: supply power to the core;

BUCK2: supply power to firmware MEMERY;

LDO1: supply power to PM internal digital power supply;

LDO2: power the camera;

LDO3: power supply for 26M crystal oscillator;

LDO4: supply power to codec CODEC;

LDO5: supply power to RF (Radio Frequency, radio frequency);

There are the following DCDC power supplies externally:

DCDC: power supply for keyboard backlight and LCD backlight;

It is worth noting that the LDO power supply on each PM depends on the type of PM, and the external DCDC power supply can also depend on the specific situation.

According to Figure 3 below, when the system is playing MP3 and there is no other operation, the whole machine can enter the process of low power consumption:

Step S210: power on and start up, the power saving mode setting module (PPP4) configures the work of each power module of the PM in power saving mode 1, power saving mode 2, power saving mode 3, power saving mode 4, and power saving mode 5 during initialization State, each power saving mode makes each power module of PM (PPP5) either in off state or in PFM state or in normal working state according to different application scenarios (the power saving mode is not effective at this time);

Step S220: the system works normally, and the user does not perform any operation after playing the MP3, then the mobile phone enters a standby state, generates a complete machine idle signal and an MP3 playback signal, and sets the status pin on the DBB (PPP1) to be complete machine idle and MP3 playback;

Step S230: The status signal detection module (PPP3) detects that the status pin on the DBB (PPP1) is idle and MP3 is played, and then notifies the power saving mode setting module (PPP4) to enter the power saving mode 2;

Step S240: the power saving mode setting module (PPP4) determines to enter the power saving mode 2 according to the state pin on the DBB (PPP1), and sets the control pins GPIO3, GPIO2, and GPIO1 on the DBB to 001, then the power control pin on the PM PWR3, PWR2, PWR1 are 001;

Step S250: The PM detects that the power control pins PWR3, PWR2, and PWR1 are 001, and the hardware automatically activates the power saving mode 2. The power supply LDO4 of the CODEC on the PM is not turned off, the CAMERA power supply LDO2, the 26M crystal oscillator power supply LDO3, the RF power supply LDO5 and The backlight power supply DCDC is turned off, the nuclear power supply BUCK1, MEMERY power supply BUCK2 and PM internal digital power supply LDO1 enter the PFM mode, and the PM feeds back to the PM_CTRL_MDL module that it is currently entering the power saving mode 2;

Step S260: When the interrupt comes, the system exits the power saving mode 2, and the hardware automatically makes each LDO and DCDC of the PM in the normal working mode;

Step S270: Next, the system enters a certain working mode and sets a status pin, and the status signal detection module (PPP3) detects the status pin again.

Steps S220 to S260 are repeated to continuously enter the low power consumption state.

Next, according to Figure 3, it will be explained again that when the physical layer has tasks, such as 2G and 3G measurements, and there is no task on the ARM (Advanced RISC Machines, microprocessor) side, the system enters the low-power flow of WFI mode:

Step S210: power on and start up, the power saving mode setting module (PPP4) configures the work of each power module of the PM in power saving mode 1, power saving mode 2, power saving mode 3, power saving mode 4, and power saving mode 5 during initialization State, each power saving mode makes each power module of PM (PPP5) either in off state or in PFM state or in normal working state according to different application scenarios (at this time, the power saving mode does not work);

Step S220: the system works normally, when the physical layer is doing 2G and 3G measurements, and there is no task on the ARM side, the system generates a WFI standby signal after entering the WFI mode, and sets the status pin on the DBB (PPP1) to WFI standby;

Step S230: The state signal detection module (PPP3) detects that the state pin on the DBB (PPP1) is WFI standby, and then notifies the power saving mode setting module (PPP4) to enter the power saving mode 4;

Step S240: the power saving mode setting module (PPP4) determines to enter the power saving mode 4 according to the state pin on the DBB (PPP1), and sets the control pins GPIO3, GPIO2, and GPIO1 on the DBB to 011, then the power control pin on the PM PWR3, PWR2, PWR1 are 011;

Step S250: The PM detects that the power control pins PWR3, PWR2, and PWR1 are 011, and the hardware automatically activates the power saving mode 4. On the PM, the CAMERA power LDO2, the CODEC power LDO4 and the backlight power DCDC are turned off, and the MEMERY power BUCK2 enters the PFM mode; ;

Step S260: When the interrupt comes, the system exits the power saving mode 4, and the hardware automatically makes each LDO and DCDC of the PM in the normal working mode;

Step S270: Next, the system enters a certain working mode and sets a status pin, and the status signal detection module (PPP3) detects the status pin again.

Steps S220 to S260 are repeated to continuously enter the low power consumption state.

After those skilled in the art know the technical solution provided by the present invention, it is not difficult to know through testing that this solution can indeed be used to reduce system power consumption. In the call state, turning off the backlight DCDC can reduce power consumption by about 25ma; In WFI mode, BUCK2 enters PFM mode, which can reduce power consumption by about 3ma compared with normal working mode.

In summary, the present invention can make the PM quickly enter the corresponding low power consumption mode according to the working status signal detected by the status detection module of the power management module, and increase the sleep time of the system, thereby reducing the power consumption of the system and prolonging the life of the mobile phone. Standby time.

In addition, an embodiment of the present invention also provides a mobile terminal, which includes the device for reducing the power consumption of the mobile terminal as described above, and the device includes:

The power management module is used to detect the working state signal of the system; it is further used to select the corresponding power saving mode according to the working state signal, and set the control pin of the digital baseband chip DBB according to the power saving mode to control the power drive The power control pin on the module PM makes the PM enter the corresponding power saving mode;

The power drive module PM is configured to enter a corresponding power saving mode according to the setting of the control pin of the DBB by the power management module.

The mobile terminal can be a variety of mobile terminals such as mobile phones, smart phones, PDAs, and portable computers.

For the specific description of the device for reducing the power consumption of the mobile terminal, reference may be made to the above description, which will not be repeated here.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related All technical fields are equally included in the scope of patent protection of the present invention.

Claims (8)

1. A method for reducing power consumption of a mobile terminal, comprising: Detect the working status signal of the system; Select the corresponding power-saving mode according to the working state signal, and set the control pin of the digital baseband chip DBB according to the power-saving mode to control the power control pin on the power drive module PM to make the PM enter the corresponding power-saving mode ; The steps of detecting the working status signal of the system include: After the system works normally and enters the corresponding working mode, the system sets the status pin of DBB; Detect the status pin of DBB to obtain the working status signal of the system. 2. The method for reducing power consumption of a mobile terminal as claimed in claim 1, wherein, before performing all the steps, the method further comprises: After the system is powered on, configure the correspondence between the corresponding power-saving modes adopted by the PM in different working states of the system. 3. The method for reducing power consumption of a mobile terminal as claimed in claim 1, wherein, after performing all the steps, the method further comprises: The PM feeds back the current power saving mode information it adopts to the DBB. 4. The method for reducing power consumption of a mobile terminal as claimed in claim 3, wherein, after performing the steps, the method further comprises: When an interrupt signal is detected, the system exits power saving mode. 5. A device for reducing power consumption of a mobile terminal, comprising: The power management module is used to detect the working state signal of the system; it is further used to select the corresponding power saving mode according to the working state signal, and set the control pin of the digital baseband chip DBB according to the power saving mode to control the power drive The power control pin on the module PM makes the PM enter the corresponding power saving mode; The power drive module PM is used to enter a corresponding power saving mode according to the setting of the control pin of the DBB by the power management module; The power management module includes: A state signal detection module is used to detect the working state signal of the system; The steps of the working state signal of the state signal detection module detection system are: After the system works normally and enters the corresponding working mode, the system sets the status pin of DBB; Detect the status pin of DBB to obtain the working status signal of the system. 6. The device for reducing power consumption of a mobile terminal according to claim 5, wherein the power management module comprises: The power-saving mode setting module is used to configure the corresponding relationship between the corresponding power-saving modes adopted by the PM in different working states after the system is powered on, and to set The above working status signal selects the corresponding power saving mode. 7 . The device for reducing power consumption of a mobile terminal according to claim 6 , wherein the PM is further used to feed back information about the power saving mode currently adopted by the PM to the DBB. 8 . 8. A mobile terminal, characterized by comprising the device for reducing power consumption of the mobile terminal according to any one of claims 5-7.