CN112366679A - Power supply control circuit and method for wireless communication module - Google Patents
Power supply control circuit and method for wireless communication module Download PDFInfo
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- CN112366679A CN112366679A CN202011306278.3A CN202011306278A CN112366679A CN 112366679 A CN112366679 A CN 112366679A CN 202011306278 A CN202011306278 A CN 202011306278A CN 112366679 A CN112366679 A CN 112366679A
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- power supply
- power
- wireless communication
- switch
- communication module
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
- H02J1/109—Scheduling or re-scheduling the operation of the DC sources in a particular order, e.g. connecting or disconnecting the sources in sequential, alternating or in subsets, to meet a given demand
Abstract
The invention provides a control method for power supply of a wireless communication module, which adopts a combined control circuit, a processor only needs to control the combined control circuit, the inside of the circuit executes power supply and power off of 3.8V and 1.8V power supplies, and whether a factory module carries 1.8V power supply output or not is identified to determine that the power supply is supplied by the internal or external 1.8V power supply, so that reliable power supply and power off of the circuit are ensured, the power supply and power off time sequence of the circuit is controlled, the IO (input/output) resource of the processing is saved, and the power supply stability and the power off thoroughness are greatly improved.
Description
Technical Field
The invention belongs to the field of wireless communication power supply, and particularly relates to a control circuit and a control method for power supply of a wireless communication module.
Background
At present, the development of wireless communication is changing day by day, and the technology of wireless communication is fully used in the fields of edge computing, AI, big data and the like, and along with the gradual commercial use of the 5G technology, the reliability and stability of wireless communication are very important. At present, 4G technology is mature, a power supply of a 4G wireless communication module in the market is 3.8V (3.3V-4.3V), a data interaction line is powered by a 1.8V power supply, some factory modules are provided with a 1.8V power supply output with weak loading capacity, only a 3.8V power supply needs to be provided for the module, and the 1.8V power supply cannot supply power for other circuits. With modules without a 1.8V power output, two power supplies must be provided. At present, the recommendation method for each manufacturer to supply power to a wireless communication module is shown in fig. 1, a processor supplies power to the wireless communication module by controlling K1 and K2, even if some processors are not controlled, a power supply is directly connected to the module, so that I/O (input/output) resources of the processor are wasted, or the power supply cannot be completely removed when the module is powered down, the power-down reset of the module is incomplete, and data errors occur.
Disclosure of Invention
In order to solve the problems, the invention provides a control method for power supply of a wireless communication module, which adopts a combined control circuit, a processor only needs to control the combined control circuit, the circuit internally executes power supply and power off of 3.8V and 1.8V power supplies, and whether a factory module carries 1.8V power supply output or not is identified to determine that the power supply is supplied by the internal or external 1.8V power supply, so that reliable power supply and reliable power off of the circuit are ensured, the power supply and power off time sequence of the circuit is controlled, the IO (input/output) resources for processing are saved, and the power supply stability and the power off thoroughness are greatly improved. The basic block diagram of this control method is shown in fig. 2.
The invention discloses a control circuit and a method for power supply of a wireless communication module, which comprises the following steps: the wireless communication module comprises a processor unit and a processor combined control unit, wherein the processor unit is respectively connected with the wireless communication module and the processor combined control unit, the processor unit controls the processor combined control unit, and the processor combined control unit controls the wireless communication module to supply power according to the power supply requirement, whether the wireless communication module is supplied with power by a 1.8V power supply or not and the power-on time sequence.
The joint processor control unit comprises: the 3.8V control circuit, the external 1.8V power supply, the self-contained 1.8V power supply selection circuit and the 1.8V power supply power-up and power-down control circuit, wherein the 3.8V control circuit controls the switch K1 by the processor to determine the power-up and power-down of the wireless communication module, and the mode of the external 1.8V power supply and the self-contained 1.8V power supply selection circuit is that the self-contained 1.8V power supply is utilized to control whether the external 1.8V power supply supplies power. If the wireless communication module is provided with a 1.8V power supply, the 1.8V power supply control switch K3 cuts off the externally supplied 1.8V power supply and also cuts off the connection path between the 1.8V power supply and an external circuit, and if the wireless communication module is not provided with the 1.8V power supply, the switch K2 is powered by the externally supplied 1.8V power supply by default.
Drawings
FIG. 1 illustrates a prior art method for controlling power to a wireless communication module;
FIG. 2 is a block diagram of a module power control method according to the present invention;
fig. 3 is a block diagram of a module power supply combination control according to the present invention.
Detailed Description
The invention provides a combined control method by combining the power supply requirements of various manufacturers, whether the power is supplied by a power supply with 1.8V and the required power-on time sequence, adding a control strategy of a coordination control mechanism, designing the control on the power supply and the corresponding power-on time sequence. Fig. 3 is a control block diagram of the joint control method.
Referring to fig. 3, the joint control method provided by the present invention mainly includes three parts, namely a 3.8V control circuit, an external 1.8V power supply, a self-contained 1.8V power supply selection circuit, and a 1.8V power supply power-up and power-down control circuit. The 3.8V control circuit is controlled by the processor control K1 to determine the power up and power down of the module, and the default value does not provide 3.8V voltage to the module. The mode of supplying 1.8V power and taking 1.8V power selection circuit outside is to utilize the 1.8V power of taking oneself to control whether the 1.8V power of supplying outside supplies power, if the wireless communication module is taken 1.8V power, 1.8V power control switch K3 of taking oneself cuts off the 1.8V power of supplying outside, also cut off the connecting path of taking 1.8V power and external circuit simultaneously, if the wireless communication module does not take 1.8V power, switch K3 defaults to and is supplied power by 1.8V power of supplying outside. And finally, determining a path for supplying power to the module by the 1.8V power supply through a 3.8V control K2 (K2 can be realized by a triode, an MOS (metal oxide semiconductor) tube or a relay, wherein if the triode is used, the 3.8V is connected to the B pole of the triode, if the MOS tube is used, the 3.8V is connected to the G pole of the MOS tube, the MOS tube of the triode works in a saturation region, and if the relay is used, the 3.8V controls a coil of the relay). The control method is designed by matching the power-on time sequence required by the module, not only accords with the time sequence of the module, but also enables whether the module is powered on or not to be finally determined by the processor.
The control block diagram of the control method for power supply of the wireless communication module provided by the invention is shown in fig. 3, and the specific implementation process is as follows:
(1) the processor controls the K1 to control the power-on and power-off of 3.8V, and the K1 is closed if the power-on is carried out, and the K1 is opened if the power-on is not carried out.
(2) If K1 is disconnected and K1 controls K2 to be disconnected at the same time, the 3.8V power supply and the 1.8V power supply do not supply power to the modules at the same time, and complete power failure is achieved.
(3) If K1 is closed, K2 is closed at the same time, so that the power supplies of 3.8V and 1.8V supply power to the module at the same time. The selection of the 1.8V power supply is determined by whether the module carries the 1.8V power supply output.
(4) If the module is provided with a 1.8V power supply output, the 1.8V power supply supplies power to the communication line, and the K3 is disconnected, so that a path for supplying power to the outside by the 1.8V power supply is cut off.
(5) If the module does not have a 1.8V power supply output, and the 1.8V power supply pin of the wireless communication module is suspended at the moment, the K3 is closed, an external 1.8V power supply supplies power to the communication line of the module, and meanwhile, no voltage is supplied to the 1.8V power supply pin of the wireless communication module.
(6) Through the steps, the power supply of the 3.8V power supply and the power supply of the 1.8V power supply are uniquely controlled by the processor, and whether the power supply of the module is controlled according to the communication mechanism and the power-on and power-off sequence.
The control method for power supply of the wireless communication module, provided by the invention, not only saves the I/O resource of the processor, but also meets the time sequence requirements of power on and power off, realizes the control of complete power on and complete power off of the wireless communication module through a combined control mechanism, and ensures that the module can be powered on and off reliably and stably.
The above embodiments are merely exemplary illustrations of the present invention, and are not intended to limit the present invention. Further steps not described in detail belong to technical content well known to the person skilled in the art. Corresponding changes and modifications within the spirit of the invention are also within the scope of the invention.
Claims (8)
1. A control circuit for powering a wireless communication module, comprising:
a processor unit for processing the received data and the received data,
the processor is combined with the control unit,
wherein the processor unit is respectively connected with the wireless communication module and the processor combined control unit, the processor unit issues a control command,
the processor combined control unit receives a control command of the controller unit and coordinately controls the wireless communication module to supply power according to the power supply requirement, the power-on time sequence and whether the wireless communication module is supplied with power by the power supply with 1.8V.
2. The control circuit of claim 1, wherein the processor combination control unit comprises:
a 3.8V control circuit, an external 1.8V power supply, a self-contained 1.8V power supply selection circuit and a 1.8V power supply power-up and power-down control circuit,
the 3.8V control circuit controls the switch K1 to determine the power on/off of the wireless communication module, and the external 1.8V power supply and the self-contained 1.8V power supply selection circuit control whether the external 1.8V power supply supplies power or not by utilizing the self-contained 1.8V power supply.
3. The control circuit of claim 2, wherein the switch K3 is controlled by the 1.8V power supply to cut off the 1.8V power supply and the connection path between the 1.8V power supply and the external circuit if the wireless communication module has the 1.8V power supply, and the switch K3 is default to be powered by the 1.8V power supply if the wireless communication module does not have the 1.8V power supply.
4. The control circuit according to claim 3, specifically comprising:
the processor controls the switch K1 to control the power-on and power-off of 3.8V, if the power-on is carried out, the switch K1 is closed, and if the power-on is not carried out, the switch K1 is opened;
if the switch K1 is disconnected and the switch K1 controls the disconnection switch K2 at the same time, the power supply of 3.8V and 1.8V does not supply power to the module at the same time, and complete power failure is realized;
if the switch K1 is closed, the switch K2 is closed at the same time, and the 3.8V power supply and the 1.8V power supply power to the modules at the same time; at the moment, the selection of the 1.8V power supply is determined by whether the wireless communication module carries the 1.8V power supply output;
if the module is provided with a 1.8V power supply output, the 1.8V power supply supplies power to the communication line, and meanwhile, the switch K3 is disconnected, so that a path for supplying power to the outside from the 1.8V power supply is cut off;
if the wireless communication module does not have a 1.8V power supply output, and the 1.8V power supply pin of the wireless communication module is suspended at the moment, the switch K3 is closed, an external 1.8V power supply supplies power to the communication line of the wireless communication module, and meanwhile, no voltage is supplied to the 1.8V power supply pin of the wireless communication module.
5. A control method for power supply of a wireless communication module comprises the following steps:
the controller unit issues a control command and,
the processor combined control unit receives a control command sent by the controller unit, and controls the wireless communication module to supply power through the 3.8V control circuit, the externally supplied 1.8V power supply, the 1.8V power supply selection circuit and the 1.8V power supply power-on and power-off control circuit according to power supply requirements, whether the wireless communication module supplies power from the 1.8V power supply and power-on time sequence coordination.
6. The control method according to claim 5, wherein
The 3.8V control circuit controls the switch K1 to determine whether the wireless communication module is powered on or off, the external 1.8V power supply and the self-contained 1.8V power supply selection circuit control the external 1.8V power supply to supply power or not by utilizing the self-contained 1.8V power supply.
7. The control method as claimed in claim 6, wherein if the wireless communication module has a 1.8V power supply, the 1.8V power supply control switch K3 cuts off the 1.8V power supply and also cuts off the connection path between the 1.8V power supply and the external circuit, and if the wireless communication module has no 1.8V power supply, the switch K3 is powered by the 1.8V power supply by default.
8. The control method according to claim 7, specifically comprising:
the processor controls the switch K1 to control the power-on and power-off of 3.8V, if the power-on is carried out, the switch K1 is closed, and if the power-on is not carried out, the switch K1 is opened;
if the switch K1 is disconnected and the switch K1 controls the disconnection switch K2 at the same time, the power supply of 3.8V and 1.8V does not supply power to the module at the same time, and complete power failure is realized;
if the switch K1 is closed, the switch K2 is closed at the same time, and the 3.8V power supply and the 1.8V power supply power to the modules at the same time; at the moment, the selection of the 1.8V power supply is determined by whether the wireless communication module carries the 1.8V power supply output;
if the module is provided with a 1.8V power supply output, the 1.8V power supply supplies power to the communication line, and meanwhile, the switch K3 is disconnected, so that a path for supplying power to the outside from the 1.8V power supply is cut off;
if the wireless communication module does not have a 1.8V power supply output, and the 1.8V power supply pin of the wireless communication module is suspended at the moment, the switch K3 is closed, an external 1.8V power supply supplies power to the communication line of the wireless communication module, and meanwhile, no voltage is supplied to the 1.8V power supply pin of the wireless communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011306278.3A CN112366679B (en) | 2020-11-19 | 2020-11-19 | Power supply control circuit and method for wireless communication module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011306278.3A CN112366679B (en) | 2020-11-19 | 2020-11-19 | Power supply control circuit and method for wireless communication module |
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| CN112366679A true CN112366679A (en) | 2021-02-12 |
| CN112366679B CN112366679B (en) | 2022-11-29 |
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| CN2565203Y (en) * | 2002-03-12 | 2003-08-06 | 华为技术有限公司 | Circuir for controlling electric sequence on multi-channel power |
| CN102349236A (en) * | 2009-03-13 | 2012-02-08 | 快捷半导体有限公司 | Power latch |
| CN202649916U (en) * | 2012-04-23 | 2013-01-02 | 上海华北科技有限公司 | +3.3V and +5V time sequence control circuit for computer mainboard |
| CN103683468A (en) * | 2012-09-17 | 2014-03-26 | 台达电子工业股份有限公司 | Power supply system and control method of power supply system |
| JP2020005379A (en) * | 2018-06-27 | 2020-01-09 | マクセルホールディングス株式会社 | Power source system |
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2020
- 2020-11-19 CN CN202011306278.3A patent/CN112366679B/en active Active
Patent Citations (5)
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|---|---|---|---|---|
| CN2565203Y (en) * | 2002-03-12 | 2003-08-06 | 华为技术有限公司 | Circuir for controlling electric sequence on multi-channel power |
| CN102349236A (en) * | 2009-03-13 | 2012-02-08 | 快捷半导体有限公司 | Power latch |
| CN202649916U (en) * | 2012-04-23 | 2013-01-02 | 上海华北科技有限公司 | +3.3V and +5V time sequence control circuit for computer mainboard |
| CN103683468A (en) * | 2012-09-17 | 2014-03-26 | 台达电子工业股份有限公司 | Power supply system and control method of power supply system |
| JP2020005379A (en) * | 2018-06-27 | 2020-01-09 | マクセルホールディングス株式会社 | Power source system |
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| 殷文志: "电场耦合型感应式电导率检测系统的研究", 《中国优秀硕士学位论文全文数据库（电子期刊）》 * |
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