CN212435702U

CN212435702U - Electric power acquisition terminal with bluetooth communication function

Info

Publication number: CN212435702U
Application number: CN202020668712.1U
Authority: CN
Inventors: 柯小勤; 周中军
Original assignee: Ningbo Sanxing Electric Co Ltd
Current assignee: Ningbo Sanxing Electric Co Ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2021-01-29
Anticipated expiration: 2030-04-27

Abstract

The utility model relates to an electric power acquisition terminal with bluetooth communication function, its characterized in that: including MCU and bluetooth module, bluetooth module realizes communicating with MCU through the serial ports sending module who links to each other with its self and the serial ports receiving module who links to each other with MCU, bluetooth module includes DXYBT862 type radio frequency chip and built-in antenna. This electric power acquisition terminal adopts bluetooth function and external equipment to communicate, and the communication does not have the dead angle, and low power dissipation, transmission distance are far away, speed is high simultaneously, and the interference killing feature is strong moreover.

Description

Electric power acquisition terminal with bluetooth communication function

Technical Field

The utility model relates to a power equipment technical field especially relates to an electric power acquisition terminal with bluetooth communication function.

Background

Besides the measurement function of the basic power consumption of the traditional electric energy meter, the conventional electric power acquisition terminal product is generally provided with an infrared communication module for short-distance data transmission in order to adapt to the use of a smart grid and new energy. However, the power acquisition terminal adopts infrared communication to transmit data, and has the defects of low communication efficiency, small data volume, small transmission distance, limited communication angle and the like.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, an object of the present invention is to provide a power collecting terminal with bluetooth communication function, which has low power consumption, long distance, high speed and strong interference rejection.

In order to realize the purpose, the technical scheme of the utility model is that: the utility model provides a power acquisition terminal with bluetooth communication function which characterized in that:

the Bluetooth module realizes interactive communication with the MCU through a serial port sending module connected with the Bluetooth module and a serial port receiving module connected with the MCU.

Further, the Bluetooth module comprises a DXYBT862 type radio frequency chip and an internal antenna.

Furthermore, the serial port sending module comprises a first resistor, a second resistor and a first capacitor, one end of the second resistor is connected with the transmitting pin of the radio frequency chip, the other end of the second resistor is connected with one end of the first capacitor, the other end of the first capacitor is grounded, one end of the first resistor is connected with the direct current power supply, the other end of the first resistor is connected with the other end of the second resistor, and the receiving pin of the MCU is connected with the other end of the second resistor.

Furthermore, the serial port receiving module comprises a third resistor, a fourth resistor and a second capacitor, one end of the third resistor is connected with the direct-current power supply, the other end of the third resistor is connected with one end of the fourth resistor, one end of the second capacitor is connected with the other end of the fourth resistor, the other end of the second capacitor is grounded, a transmitting pin of the MCU is connected with the other end of the third resistor, and a receiving pin of the radio frequency chip is connected with the other end of the fourth resistor.

Furthermore, the power acquisition terminal further comprises a reset module respectively connected with the MCU and the Bluetooth module.

Furthermore, the reset module comprises a fifth resistor, a sixth resistor and a third capacitor, one end of the fifth resistor is connected with the reset pin of the MCU, the other end of the fifth resistor is connected with the reset pin of the rf chip, one end of the sixth resistor is connected with the dc power supply, the other end of the sixth resistor is connected with the other end of the fifth resistor, one end of the third capacitor is connected with the other end of the fifth resistor, and the other end of the third capacitor is grounded.

Furthermore, the Bluetooth module also comprises a JP1 socket for online upgrading, wherein a first pin of the JP1 socket is connected with a reset pin of the radio frequency chip, a second pin of the JP1 socket is connected with a download data line pin of the radio frequency chip, a third pin of the JP1 socket is connected with a clock pin of the radio frequency chip, and a fourth pin of the JP1 socket is grounded.

Further, the mode application pin of the MCU is connected to the mode application pin of the rf chip through a seventh resistor.

Further, the first resistor is 4.7k Ω, the second resistor is 27 Ω, the third resistor is 4.7k Ω, the fourth resistor is 27 Ω, the fifth resistor is 100 Ω, the sixth resistor is 10k Ω, and the seventh resistor is 27 Ω.

Further, the model of the first capacitor is 0.1nF50V, the model of the second capacitor is 0.1nF50V, the model of the third capacitor is 0.1uF16V, and the direct current power supply is 3.3V.

Compared with the prior art, the utility model has the advantages of:

this electric power collection terminal carries out data transmission through setting up bluetooth module and external equipment, and the communication does not have the dead angle, and low power dissipation, transmission distance are far away, speed is high simultaneously, and the interference killing feature is strong moreover, and except this electric power collection terminal circuit simple, can realize the terminal and the automatic communication of checking meter of customer premises equipment, have good market prospect.

Drawings

Fig. 1 is a schematic diagram of an MCU and related pins in the present application.

Fig. 2 is a schematic circuit diagram of a serial port sending module in the present application.

Fig. 3 is a schematic circuit diagram of a serial port receiving module in the present application.

Fig. 4 is a circuit diagram of a reset module according to the present application.

Fig. 5 is a schematic view of the JP1 cartridge of the present application.

Fig. 6 is a schematic diagram of an rf chip and related circuits according to the present application.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1 to 6, the power acquisition terminal with bluetooth communication function includes an MCU and a bluetooth module, and the bluetooth module realizes interactive communication with the MCU through a serial port transmitting module connected to the bluetooth module and a serial port receiving module connected to the MCU.

Specifically, the bluetooth module includes a DXYBT862 model rf chip and a built-in antenna diagram, not shown; the serial port sending module comprises a first resistor R1, a second resistor R2 and a first capacitor C1, one end of the second resistor R2 is connected with a transmitting pin BT862_ TX of the radio frequency chip, the other end of the second resistor R2 is connected with one end of the first capacitor C1, the other end of the first capacitor C1 is grounded, one end of the first resistor R1 is connected with a direct current power supply, the other end of the first resistor R1 is connected with the other end of the second resistor R2, and a receiving pin BT _ TX1 of the MCU is connected with the other end of the second resistor R2; the serial port receiving module comprises a third resistor R3, a fourth resistor R4 and a second capacitor C2, one end of the third resistor R3 is connected with a direct-current power supply, the other end of the third resistor R3 is connected with one end of the fourth resistor R4, one end of the second capacitor C2 is connected with the other end of the fourth resistor R4, the other end of the second capacitor C2 is grounded, a transmitting pin BT _ RX1 of the MCU is connected with the other end of the third resistor R3, and a receiving pin BT862_ RX of the radio frequency chip is connected with the other end of the fourth resistor R4.

In this embodiment, the power acquisition terminal further includes a reset module respectively connected to the MCU and the bluetooth module. Specifically, the reset module includes a fifth resistor R5, a sixth resistor R6, and a third capacitor C3, one end of the fifth resistor R5 is connected to the reset pin BT _ RST of the MCU, the other end of the fifth resistor R5 is connected to the reset pin BT _ RST1 of the rf chip, one end of the sixth resistor R6 is connected to the dc power supply, the other end of the sixth resistor R6 is connected to the other end of the fifth resistor R5, one end of the third capacitor C3 is connected to the other end of the fifth resistor R5, and the other end of the third capacitor C3 is grounded. And (3) keeping the reset pin BT _ RST1 of the radio frequency chip at low level for 5s within 30 seconds after power-on, recovering partial parameters by the system, and recovering all parameters if the reset pin BT _ RST1 of the radio frequency chip is kept for more than 20 s.

In this embodiment, the bluetooth module further includes a JP1 socket for online upgrade, a first pin of the JP1 socket is connected to a reset pin BT _ RST of the rf chip, a second pin is connected to a download data line pin SWDIO of the rf chip, a third pin is connected to a clock pin SWCLK of the rf chip, and a fourth pin is grounded.

In this embodiment, the MODE application pin BT _ MODE of the MCU is connected to the MODE application pin MODE of the radio frequency chip through the seventh resistor R7, and the application MODE can be selected through the MODE application pin MODE of the radio frequency chip.

In this embodiment, the resistance of the first resistor R1 is 4.7k Ω, the resistance of the second resistor R2 is 27 Ω, the resistance of the third resistor R3 is 4.7k Ω, the resistance of the fourth resistor R4 is 27 Ω, the resistance of the fifth resistor R5 is 100 Ω, the resistance of the sixth resistor R6 is 10k Ω, the resistance of the seventh resistor R7 is 27 Ω, the model of the first capacitor C1 is 0.1nF50V, the model of the second capacitor C2 is 0.1nF50V, the model of the third capacitor C3 is 0.1uF16V, and the dc power supply is 3.3V.

While embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a power acquisition terminal with bluetooth communication function which characterized in that:

2. The power harvesting terminal of claim 1, wherein:

the Bluetooth module comprises a DXYBT862 type radio frequency chip and an internal antenna.

3. The power harvesting terminal of claim 2, wherein:

the serial port sending module comprises a first resistor, a second resistor and a first capacitor, wherein one end of the second resistor is connected with a transmitting pin (BT862_ TX) of the radio frequency chip, the other end of the second resistor is connected with one end of the first capacitor, the other end of the first capacitor is grounded, one end of the first resistor is connected with a direct current power supply, the other end of the first resistor is connected with the other end of the second resistor, and a receiving pin (BT _ TX1) of the MCU is connected with the other end of the second resistor.

4. The power harvesting terminal of claim 3, wherein:

the serial port receiving module comprises a third resistor, a fourth resistor and a second capacitor, one end of the third resistor is connected with a direct current power supply, the other end of the third resistor is connected with one end of the fourth resistor, one end of the second capacitor is connected with the other end of the fourth resistor, the other end of the second capacitor is grounded, a transmitting pin (BT _ RX1) of the MCU is connected with the other end of the third resistor, and a receiving pin (BT862_ RX) of the radio frequency chip is connected with the other end of the fourth resistor.

5. The power harvesting terminal of claim 4, wherein:

the power acquisition terminal further comprises a reset module respectively connected with the MCU and the Bluetooth module.

6. The power harvesting terminal of claim 5, wherein:

the reset module comprises a fifth resistor, a sixth resistor and a third capacitor, wherein one end of the fifth resistor is connected with a reset pin (BT _ RST) of the MCU, the other end of the fifth resistor is connected with a reset pin (BT _ RST1) of the radio frequency chip, one end of the sixth resistor is connected with the direct current power supply, the other end of the sixth resistor is connected with the other end of the fifth resistor, and one end of the third capacitor is connected with the other end of the fifth resistor and the other end of the third capacitor is grounded.

7. The power harvesting terminal of claim 5, wherein:

the Bluetooth module also comprises a JP1 socket for online upgrade, wherein a first pin of the JP1 socket is connected with a reset pin (BT _ RST) of the radio frequency chip, a second pin of the JP1 socket is connected with a download data line pin of the radio frequency chip, a third pin of the JP1 socket is connected with a clock pin of the radio frequency chip, and a fourth pin of the JP1 socket is grounded.

8. The power harvesting terminal of claim 6, wherein:

and the MODE application pin (BT _ MODE) of the MCU is connected with the MODE application pin (MODE) of the radio frequency chip through a seventh resistor.

9. The power harvesting terminal of claim 8, wherein:

the first resistor is 4.7k omega, the second resistor is 27 omega, the third resistor is 4.7k omega, the fourth resistor is 27 omega, the fifth resistor is 100 omega, the sixth resistor is 10k omega, and the seventh resistor is 27 omega.

10. The power harvesting terminal of claim 6, wherein:

the model of the first capacitor is 0.1nF50V, the model of the second capacitor is 0.1nF50V, the model of the third capacitor is 0.1uF16V, and the direct-current power supply is 3.3V.