CN210136408U - Wireless radio frequency transmission circuit for GSM communication of mobile phone - Google Patents
Wireless radio frequency transmission circuit for GSM communication of mobile phone Download PDFInfo
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- CN210136408U CN210136408U CN201920045331.5U CN201920045331U CN210136408U CN 210136408 U CN210136408 U CN 210136408U CN 201920045331 U CN201920045331 U CN 201920045331U CN 210136408 U CN210136408 U CN 210136408U
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Abstract
The utility model discloses a wireless radio frequency transmission circuit that can be used to cell-phone GSM communication, aim at providing one kind and regard as the control unit with STM8 singlechip, GSM is as mobile communication module, the singlechip of cell-phone instruction is received by the GSM network, constitute the two-way wireless data communication network of single-point to the multiple spot through wireless radio frequency transceiver module, send and carry out corresponding instruction function for the equipment of taking wireless radio frequency transceiver module, and then control the transmission circuit of the working method of a plurality of equipment, its technical scheme main points are, including MCU control circuit, be connected with the GSM module that is used for connecting the cell-phone through the GSM network on the control circuit respectively and with a plurality of radio frequency emission module that contain radio frequency transceiver circuit equipment.
Description
Technical Field
The utility model relates to a wireless radio frequency transmission equipment field, concretely relates to wireless radio frequency transmission circuit that can be used to cell-phone GSM communication.
Background
Radio frequency is a non-contact automatic identification technology which is started in the 90 s of the 20 th century. Compared with the traditional magnetic card and IC card technology, the radio frequency technology has the characteristics of non-contact, high reading speed, no abrasion and the like. The wireless radio frequency technology carries out non-contact bidirectional data transmission between the reader and the radio frequency card so as to achieve the purposes of target identification and data exchange. Compared with traditional bar codes, magnetic cards and IC cards, the radio frequency card has the characteristics of non-contact, high reading speed, no environmental influence, long service life and convenient use, has an anti-collision function, and can process a plurality of cards simultaneously. With the vigorous development of smart phones and the continuous stimulation of the demand of internet of things, 3G and 4G networks and mobile communication devices have been popularized comprehensively. The utility model discloses a make full use of wireless communication technique to STM8 singlechip is as the control unit, and GSM is as mobile communication module, receives the singlechip of mobile phone instruction by the GSM network, constitutes the two-way wireless data communication network of single-point to the multiple spot through wireless radio frequency transceiver module, sends and carries out corresponding instruction function for the equipment of taking wireless radio frequency transceiver module, and then controls the working method of a plurality of equipment.
At present, Chinese patent with publication number CN202737977U discloses a remote mobile phone remote control system based on GSM wireless transmission technology, which comprises a remote mobile phone remote control system based on GSM wireless transmission technology, wherein the remote mobile phone remote control system consists of a 5V direct current power adapter, a signal output module, an LCD1602 display module, an MSP430F149, an LM1086IS-ADJ voltage stabilization 4V, serial port communication, a TC35i module, an antenna, a SIM card circuit, an IGT starting circuit, an RS-232 transmission circuit and a PC; the RS-232 transmission circuit and the PC form an upper computer short message cat, the 5V direct current power adapter, the signal output module and the LCD1602 display module are connected with the LM1086IS-ADJ voltage-stabilizing 4V through MSP430F149, the LM1086IS-ADJ voltage-stabilizing 4V, SIM card circuit and the IGT starting circuit are connected with the TC35i module, the TC35i module is connected with the upper computer short message cat and the MSP430F149 through serial port communication, and the TC35i module is connected with the antenna.
The remote mobile phone remote control system based on the GSM wireless transmission technology has the characteristics of always-on, no need of dialing, low price, wide coverage range and the like, is particularly suitable for application requiring frequent transmission of small-flow data, realizes bidirectional transmission of wireless data, wireless remote detection and control and the like, but cannot control a plurality of devices through wireless radio frequency, so that a user cannot timely master and control the state of a controlled unit.
Disclosure of Invention
The utility model aims at providing a wireless radio frequency transmission circuit that can be used to cell-phone GSM communication, it has make full use of wireless communication technique, regard as the control unit with STM8 singlechip, GSM is as mobile communication module, receive the singlechip of cell-phone instruction by the GSM network, constitute the two-way wireless data communication network of single-point to the multiple spot through wireless radio frequency transceiver module, send and carry out corresponding instruction function for the equipment of taking wireless radio frequency transceiver module, and then control the working method's of a plurality of equipment advantage.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a wireless radio frequency transmission circuit for GSM communication of a mobile phone comprises an MCU control circuit, and is characterized in that: the control circuit is respectively connected with a GSM module for connecting a mobile phone through a GSM network and a plurality of wireless radio frequency transceiver modules containing radio frequency transceiver circuit equipment
Further setting: the MCU control module is a microprocessor STM8L151K 4.
By adopting the technical scheme, the MCU control module is a circuit module which is constructed by taking a microprocessor STM8L151K4 as a core, and the internal architecture of the MCU control module comprises 12-bit AD and DA so as to ensure the generation and return inspection of high-precision signals; the input end of the circuit is externally connected with a 12MHZ crystal oscillator circuit, and the 12Mhz crystal oscillator circuit consists of a 12Mhz crystal oscillator Y2 and matching capacitors C7 and C12; the reference source of the AD and DA inside the MCU consists of reference diodes D1, R2 and C9, wherein D1 is a reference source LM4040AIM3-3.0, R2 is a current-limiting resistor used for adjusting the load current of the circuit, and C9 is a bypass capacitor; p1 is UART serial interface for connecting GSM communication module; the P2 interface is a SWIM programming interface for online debugging or program downloading.
Further setting: the wireless radio frequency transceiving module is a radio frequency transceiver chip nRF24L 01.
By adopting the technical scheme, the wireless radio frequency transceiver module is connected with the MCU control module through the SPI communication interface of the MCU control module; the radio frequency transceiver module realizes master-slave mode single-point to multipoint wireless communication with a plurality of external devices containing radio frequency transceiver circuits through 2.4 GHz-2.5 GHz ISM frequency bands.
Further setting: the GSM module is a SIM900A communication module.
By adopting the technical scheme, the GSM module is connected with the MCU control module through the UART interface of the MCU control module. The GSM module realizes communication with the mobile phone of the user by utilizing a GSM network.
To sum up, the utility model discloses following beneficial effect has: by fully utilizing the wireless communication technology, the STM8 single chip microcomputer is used as a control unit, the GSM is used as a mobile phone communication module, the single chip microcomputer which receives mobile phone instructions through the GSM network forms a single-point-to-multipoint bidirectional wireless data communication network through the wireless radio frequency transceiver module, and the single chip microcomputer is sent to equipment with the wireless radio frequency transceiver module to execute corresponding instruction functions, so that the working modes of a plurality of pieces of equipment are controlled.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of: the overall structure schematic diagram of a wireless radio frequency transmission circuit for mobile phone GSM communication;
FIG. 2 is a diagram of: an electrical circuit diagram of a wireless radio frequency transmission circuit for GSM communication of a mobile phone.
In the figure, 1, an MCU control circuit; 2. a radio frequency transceiver module; 3. and a GSM module.
Detailed Description
The following describes the embodiments of the present invention with reference to the accompanying drawings.
The utility model adopts the technical proposal that:
a wireless radio frequency transmission circuit for mobile phone GSM communication is disclosed, as shown in FIG. 1 and FIG. 2, comprising an MCU control circuit 1, a wireless radio frequency transceiver module 2 and a GSM module 3, as shown in FIG. 1, the MCU control module is a circuit module constructed by taking a microprocessor STM8L151K4 as a core, and the internal architecture of the MCU control module comprises 12 bits of AD and DA to ensure the generation and return detection of high-precision signals. The input end of the circuit is externally connected with a 12MHz crystal oscillator circuit, and the 12Mhz crystal oscillator circuit consists of a 12Mhz crystal oscillator Y2 and matching capacitors C7 and C12. The reference source of the AD and DA inside the MCU consists of reference diodes D1, R2 and C9, wherein D1 is a reference source LM4040AIM3-3.0, R2 is a current-limiting resistor used for adjusting load current of a circuit, and C9 is a bypass capacitor. The P1 is a UART serial interface and is used for connecting a GSM communication module. The P2 interface is a SWIM programming interface for online debugging or program downloading.
The radio frequency transceiver module is a circuit built by taking a radio frequency transceiver chip nRF24L01 as a core. The nRF24L01 is a single-chip radio frequency transceiver chip, works in an ISM frequency band which is open in the world at 2.4GHz, the highest working speed is 2Mbit/s, functional modules such as a frequency synthesizer, a power amplifier, a crystal oscillator, a modulator and the like are integrated in the chip, high-efficiency QFSK modulation is adopted, the performance is stable, and the anti-interference capability is strong. The system has 126 channels, meets the requirements of multi-point communication and frequency modulation communication, and is internally provided with hardware CRC (cyclic redundancy check) check and point-to-multi-point communication address control. Wherein, pins 1 to 5 of the nRF24L01 are interfaces for carrying out SPI communication with the singlechip STM 8; the pin 6is connected with the singlechip as an interrupt signal line for data receiving and transmitting; the pin 7 is a chip power supply end, the power supply voltage is 5V, and the C8 is a power supply bypass capacitor, so that the noise of the power supply voltage is reduced; the pins 9 and 10 are input and output interfaces of the crystal oscillator, and the crystal oscillator consists of a 16Mhz crystal oscillator Y1 and matching capacitors C10 and C11; pin 11 is the power supply output, providing 1.8V operating voltage for the RF power amplifier; the pins 12 and 13 form an antenna interface, and the antenna circuit consists of an inductor L1, an inductor L2, an inductor L3, a capacitor C3 and a capacitor C4; pin 14, pin 17, and pin 20 to power ground; pins 15 and 17 are connected to a 5VDC supply, with C2 being a supply bypass capacitor to reduce noise in the supply voltage; pin 16 is an analog input and is grounded through resistor R1 as a chip reference current; the pin 19 is used for realizing decoupling processing of the positive terminal of the power supply through a decoupling capacitor C1.
The GSM module is a SIM900A communication module. The module is connected with an STM8 single chip microcomputer through a P2 interface. The SIM900A module is connected with the singlechip through the serial ports, thereby the STM8 singlechip realizes the control to SIM900A module. The control of the STM8 singlechip on the communication of the SIM900A module can be realized through software, the control realized by adopting the software has the characteristics of flexible use and the like, and the detection of excessive hardware signals is also well avoided.
The above is the preferred embodiment of the present invention, and is not intended to limit the present invention in any form, and all the simple modifications, equivalent changes and modifications made by the technical entity of the present invention to the above embodiments all belong to the scope of the technical solution of the present invention.
Claims (2)
1. A wireless radio frequency transmission circuit for GSM communication of a mobile phone comprises an MCU control circuit (1), and is characterized in that: the control circuit is respectively connected with a GSM module (3) used for connecting a mobile phone through a GSM network and a plurality of wireless radio frequency transceiving modules (2) containing radio frequency transceiving circuit equipment, the MCU control module is a circuit module constructed by taking a microprocessor STM8L151K4 as a core, and the internal architecture of the MCU control module comprises 12-bit AD and DA so as to ensure the generation and return inspection of high-precision signals; the input end of the circuit is externally connected with a 12MHZ crystal oscillator circuit, the 12Mhz crystal oscillator circuit consists of a 12Mhz crystal oscillator Y2 and matching capacitors C7 and C12, the reference source of AD and DA inside the MCU consists of reference diodes D1, R2 and C9, wherein D1 is a reference source LM4040AIM3-3.0, R2 is a current-limiting resistor and used for adjusting the load current of the circuit, C9 is a bypass capacitor, P1 is a UART serial port interface and used for connecting a GSM communication module, and a P2 interface is a SWIM programming interface and used for online debugging or program downloading;
the MCU control circuit (1) is a microprocessor STM8L151K 4;
the wireless radio frequency transceiving module (2) is a radio frequency transceiver chip nRF24L 01;
pins 1-5 of the nRF24L01 are interfaces for performing SPI communication with the single chip microcomputer STM8L151K 4; the pin 6is connected with the singlechip as an interrupt signal line for data receiving and transmitting; the pin 7 is a chip power supply end, the power supply voltage is 5V, and the C8 is a power supply bypass capacitor, so that the noise of the power supply voltage is reduced; the pins 9 and 10 are input and output interfaces of the crystal oscillator, and the crystal oscillator consists of a 16Mhz crystal oscillator Y1 and matching capacitors C10 and C11; pin 11 is the power supply output, providing 1.8V operating voltage for the RF power amplifier; the pins 12 and 13 form an antenna interface, and the antenna circuit consists of an inductor L1, an inductor L2, an inductor L3, a capacitor C3 and a capacitor C4; pin 14, pin 17, and pin 20 to power ground; pins 15 and 17 are connected to a 5VDC supply, with C2 being a supply bypass capacitor to reduce noise in the supply voltage; pin 16 is an analog input and is grounded through resistor R1 as a chip reference current; the pin 19 is used for realizing decoupling processing of the positive terminal of the power supply through a decoupling capacitor C1.
2. The wireless radio frequency transmission circuit for GSM communication of a mobile phone according to claim 1, wherein: the GSM module (3) is a SIM900A communication module, and the GSM module (3) is connected with the STM8L151K4 through a P2 interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920045331.5U CN210136408U (en) | 2019-01-11 | 2019-01-11 | Wireless radio frequency transmission circuit for GSM communication of mobile phone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920045331.5U CN210136408U (en) | 2019-01-11 | 2019-01-11 | Wireless radio frequency transmission circuit for GSM communication of mobile phone |
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| CN210136408U true CN210136408U (en) | 2020-03-10 |
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| CN201920045331.5U Active CN210136408U (en) | 2019-01-11 | 2019-01-11 | Wireless radio frequency transmission circuit for GSM communication of mobile phone |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114880275A (en) * | 2022-05-16 | 2022-08-09 | 无锡职业技术学院 | Generalized program transmission system and transmission method capable of memorizing operation steps |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114880275A (en) * | 2022-05-16 | 2022-08-09 | 无锡职业技术学院 | Generalized program transmission system and transmission method capable of memorizing operation steps |
| CN114880275B (en) * | 2022-05-16 | 2023-12-12 | 无锡职业技术学院 | Generalized program transmission system capable of memorizing operation steps and transmission method |
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Effective date of registration: 20231024 Address after: Room 505, Private Technology Entrepreneurship Service Center, No. 605, Mount Huangshan Road, High tech Zone, Hefei City, Anhui Province, 230000 Patentee after: Hefei Tanzhen Testing Technology Co.,Ltd. Address before: 214000 No. 1600, Gao Lang Xi Road, Binhu District, Wuxi, Jiangsu Patentee before: WUXI INSTITUTE OF TECHNOLOGY |
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