CN208367625U - SMBus bus-based electric quantity state display module - Google Patents

Abstract

The utility model provides a SMBus bus-based electric quantity state display module, which comprises an LED electric quantity indicating circuit, a processor and an SMbus communication interface; indicator lights LED1-LED5 of the LED electric quantity indicating circuit are connected with I/O pins PA0-PA4 of the processor; a clock pin SMBCLK of the SMbus communication interface is connected with a PC12 pin of the processor, and a data pin SMBDAT of the SMbus communication interface 3 is connected with a PC11 pin of the processor; the serial port pin of the processor is connected with a serial port level conversion chip MAX 3232. Can realize the intelligent display of the battery power state of SMBus interface through this module, therefore can solve the technical problem that do not have the intelligent object of battery power monitoring and state display who uses with SMBus interface notebook cooperation in the existing market, this module has characteristics small, low-power consumption, reliable operation.

Description

A kind of state of charge display module based on SMBus bus

Technical field

The utility model relates to Notebook Battery fields more particularly to a kind of state of charge based on SMBus bus to show Module.

Background technique

Laptop is widely used due to the advantages that its is small in size, light-weight, easy to carry.It is used in notebook In the process, it needs to charge the battery and pay close attention to battery capacity service condition.Existing Notebook Battery is currently on the market It is communicated by SMBus bus, but the intelligent object of monitoring cell electricity quantity and status display based on SMBus matched with its But it is difficult to find.Therefore, researching and developing a kind of state of charge display module based on SMBus bus is a urgent problem to be solved.

Summary of the invention

The utility model will solve the above technical problem, provide a kind of state of charge display module based on SMBus bus, Charge value and charging and discharging state are obtained by SMBus bus, indicates charging and discharging state and electricity range with LED light, and pass through string Mouth can receive specific charge value.

In order to solve the above technical problems, the technical solution adopted in the utility model is:

A kind of state of charge display module based on SMBus bus, including LED battery capacity indication circuit, processor and SMbus Communication interface, the indicator light LED1 in I/O pin PA0 and LED the battery capacity indication circuit of the processor are connected, the processor I/O pin PA1 be connected with the indicator light LED2 in LED battery capacity indication circuit, the I/O pin PA2 and LED of the processor electricity The indicator light LED3 measured in indicating circuit is connected, the I/O pin PA3 of the processor and the instruction in LED battery capacity indication circuit Lamp LED4 is connected, and the indicator light LED5 in I/O pin PA4 and LED the battery capacity indication circuit of the processor is connected, described The clock pins SMBCLK of SMbus communication interface is connected with the PC12 pin of processor, the data pipe of the SMbus communication interface Foot SMBDAT is connected with the PC11 pin of processor, and the serial port pin of the processor is connected with serial port level conversion core piece, real Existing Transistor-Transistor Logic level turns 232 level, provides 232 external interfaces, can monitor actual charge value by the interface.

Further, the processor is also connected with reset circuit, clock circuit and power supply circuit.

Further, the processor is that low-power consumption may be programmed microprocessor, using ST ST Microelectronics STM32F1XXX chip.

Further, the SMbus communication interface uses the PCI board card of standard.

Further, electronic component operating temperature range selected by this module is -40~+85 DEG C.

Further, the LED battery capacity indication circuit uses 5 LED light (LED1-LED5), bright using its, go out, quick flashing The instruction of the battery charge of charging and discharging state is realized in the combination that bright, slow flash sparkles each state.

Further, the serial port level conversion core piece is MAX3232.

The utility model has the advantages and positive effects of: the battery electricity of SMBus interface may be implemented by this module The intelligent display of amount state, it is thus possible to solve not electric with the matching used battery of SMBus interface notebook currently on the market The technical issues of intelligent object of amount monitoring and status display, this module has the characteristics that small in size, low-power consumption, reliable operation, Ensure it with good usability and environmental suitability.

Detailed description of the invention

Fig. 1 is the principles of the present invention block diagram；

Fig. 2 is the circuit diagram of the utility model reset circuit；

Fig. 3 is the circuit diagram of the utility model clock circuit；

Fig. 4 is the circuit diagram of the utility model power supply circuit；

Fig. 5 is the circuit diagram of the utility model LED battery capacity indication circuit.

In figure:

1, LED battery capacity indication circuit；2, low-power consumption may be programmed microprocessor；3, SMbus communication interface

Specific embodiment

It elaborates with reference to the accompanying drawing to specific embodiment of the utility model.

As shown in Figure 1, a kind of state of charge display module based on SMBus bus, including it is LED battery capacity indication circuit 1, low Power consumption may be programmed microprocessor 2, SMbus communication interface 3.The SMbus communication interface is PCI9030.The LED electricity refers to Show that the indicator light LED1-LED5 of circuit 1 is connected with the I/O pin PA0-PA4 that low-power consumption may be programmed microprocessor 2；It is described The clock pins SMBCLK of SMbus communication interface 3 is connected with the PC12 pin that low-power consumption may be programmed microprocessor 2, described The data pins SMBDAT of SMbus communication interface 3 is connected with the PC11 pin that low-power consumption may be programmed microprocessor 2；It is described low The serial port pin that power consumption may be programmed microprocessor 2 is connected with serial port level conversion core piece MAX3232, realizes that Transistor-Transistor Logic level turns 232 Level, provides 232 external interfaces, can monitor actual charge value by the interface.The SMbus communication interface 3 is adopted With the PCI board card of standard, may be programmed using two pins (SMBCLK and SMBDAT) provided in PCI standard and low-power consumption miniature Processor 2 is connected.Fig. 2, Fig. 3, Fig. 4 be set forth low-power consumption may be programmed the reset circuit of microprocessor 2, clock circuit and Power supply circuit.The utility model circuit realizes that selected electronic component operating temperature range is -40~+85 DEG C.

SMbus communication interface 3 is connected to Notebook Battery, low-power consumption may be programmed microprocessor 2 for realizing notes This battery SMbus bus data reads conversion and the control of LED state indicator light, and low-power consumption may be programmed microprocessor in example 2 use the STM32F1XXX chip solution of ST ST Microelectronics；This chip operating temperature range can be -40~+85 DEG C and The characteristics of power consumption is lower, small volume has good usability and environmental suitability.LED electricity described in the utility model Indicating circuit 1；Using 5 LED light (LED1-LED5), it is bright using its, go out, fastly flashing, slow flash sparkle each state combination realize The instruction of the battery charge of charging and discharging state.If LED1 is bright, LED2 flashing, LED3-LED5 goes out, and battery is filling at this time for expression Electricity condition, and electricity, between 10%-20%, LED1 is bright, LED2-LED5 goes out, and indicates battery in discharge condition, electricity exists It, can real-time monitoring charge value by serial ports between 10%-20%.

The working principle and internal processes of a kind of state of charge display module based on SMBus bus of the utility model execute Process is: low-power consumption may be programmed microprocessor 2 and be communicated by included SMbus bus interface and Notebook Battery first, tool Body is to send the operation that corresponding order read word or read block to the corresponding address of Notebook Battery by SMbus bus, is read The related data taken carries out data processing, and charge value is exported to by serial ports and controlled LED battery capacity indication circuit 1, completes battery The display of charging and discharging state and electricity range.It needs to strictly observe SMbus System Management Bus specification 2.0 in internal processes design Version.

A kind of one application example of state of charge display module based on SMBus bus of the utility model are as follows: certain customization pen Remember that the battery electric quantity state of this computer is shown.The SMBus interface of the module of the utility model and certain customization laptop is connected After connecing, open the battery power switch of laptop, LED light will show the computer battery electricity range and one of them Indicator light is with the frequency scintillation of 1s, it was demonstrated that the battery is in charged state, closes the battery power switch of laptop, instruction Lamp stops flashing, it was demonstrated that the battery is in discharge condition.

A kind of state of charge display module based on SMBus bus of the utility model has used high-performance low-power-consumption programmable Microprocessor completes the reading of SMbus bus electricity data, and data are converted, and is flashed by light on and off such as LED to show Show the range of charging and discharging state and current battery electricity.The intelligent power that this module can be widely applied to SMBus bus interface is aobvious Show equipment, have the characteristics that small in size, low-power consumption, reliable operation, it is ensured that it is with good usability and environmental suitability.

The embodiments of the present invention are described in detail above, but the content is only the preferable of the utility model Embodiment should not be considered as limiting the scope of the invention.It is all according to equivalent change made by the scope of the utility model with Improve etc., it shall still fall within the scope of this patent.

Claims (7)

1. a kind of state of charge display module based on SMBus bus, it is characterised in that: including LED battery capacity indication circuit, processing Device and SMbus communication interface, the indicator light LED1 in I/O pin PA0 and LED the battery capacity indication circuit of the processor are connected, Indicator light LED2 in I/O pin PA1 and LED the battery capacity indication circuit of the processor is connected, the I/O pin of the processor PA2 is connected with the indicator light LED3 in LED battery capacity indication circuit, I/O pin PA3 and LED the battery capacity indication electricity of the processor Indicator light LED4 in road is connected, the indicator light LED5 phase in the I/O pin PA4 and LED battery capacity indication circuit of the processor Even, the clock pins SMBCLK of the SMbus communication interface is connected with the PC12 pin of processor, the SMbus communication interface Data pins SMBDAT be connected with the PC11 pin of processor, the serial port pin of the processor and serial port level conversion core piece It is connected.

2. a kind of state of charge display module based on SMBus bus according to claim 1, it is characterised in that: described Processor is also connected with reset circuit, clock circuit and power supply circuit.

3. a kind of state of charge display module based on SMBus bus according to claim 1, it is characterised in that: described Processor is that low-power consumption may be programmed microprocessor, using the STM32F1XXX chip of ST ST Microelectronics.

4. a kind of state of charge display module based on SMBus bus according to claim 1, it is characterised in that: described SMbus communication interface uses the PCI board card of standard.

5. a kind of state of charge display module based on SMBus bus according to claim 1 or 2, it is characterised in that: this Electronic component operating temperature range selected by module is -40~+85 DEG C.

6. a kind of state of charge display module based on SMBus bus according to claim 1, it is characterised in that: described Serial port level conversion core piece is MAX3232.

7. according to claim 1 or 2, it is characterised in that: the LED battery capacity indication circuit uses 5 LED light, utilizes The instruction of the battery charge of charging and discharging state is realized in the combination that its is bright, go out, flashing, slow flash sparkle each state fastly.