CN105589084A - STM32-based Beidou time service positioning device - Google Patents

STM32-based Beidou time service positioning device Download PDF

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Publication number
CN105589084A
CN105589084A CN201510979816.8A CN201510979816A CN105589084A CN 105589084 A CN105589084 A CN 105589084A CN 201510979816 A CN201510979816 A CN 201510979816A CN 105589084 A CN105589084 A CN 105589084A
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China
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module
stm32
button
crystal oscillator
pin
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CN201510979816.8A
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CN105589084B (en
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房涛
邹琴
张日东
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Hangzhou Dianzi University
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Hangzhou Dianzi University
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13Receivers
    • G01S19/35Constructional details or hardware or software details of the signal processing chain
    • G01S19/37Hardware or software details of the signal processing chain
    • GPHYSICS
    • G04HOROLOGY
    • G04RRADIO-CONTROLLED TIME-PIECES
    • G04R20/00Setting the time according to the time information carried or implied by the radio signal
    • G04R20/02Setting the time according to the time information carried or implied by the radio signal the radio signal being sent by a satellite, e.g. GPS

Abstract

The invention discloses an STM32-based Beidou time service positioning device, comprising an STM32 microprocessor control module, a UM220 receiving module, a CH340 serial port communication module, a 12864 liquid crystal display module and a button interaction module, wherein the STM32 microprocessor control module is in connection with the UM220 receiving module, the 12864 liquid crystal display module and the button interaction module. The STM32-based Beidou time service positioning device employs an STM32 controller as the control core of the device, extracts and processes the satellite data received by the UM220 receiving module, and sends the satellite data to the 12864 liquid crystal display module for display. The STM32-based Beidou time service positioning device solves the problems that Beidou positioning and time service devices are less and expensive in the present market, possesses the advantages of simple structure, easy control and low cost, and is safe and reliable.

Description

Big Dipper time service positioning equipment based on STM32
Technical field
The present invention relates to a kind of Big Dipper time service positioning equipment based on STM32.
Background technology
Along with the application of Beidou satellite navigation system is more and more extensive, energetically support and the fast development of country to Beidou satellite navigation system, Beidou satellite navigation system equipment spreading speed also will be accelerated greatly. Just at the early-stage in our domestic Beidou satellite navigation system industry, the rise of Beidou satellite navigation system industry certainly will also will advance Beidou satellite navigation system in application among the people greatly.
But due to professional Beidou satellite navigation system equipment price costliness, ordinary consumer is difficult to bear, so also limited Beidou satellite navigation system in extensive application among the people, the task of top priority of each Beidou satellite navigation system manufacturer is now the manufacturing cost that reduces Beidou satellite navigation system, cut down some ordinary consumer use at ordinary times less than specialized function, retain some basic utility functions, to accelerate Beidou satellite navigation system in universal speed among the people.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of Big Dipper time service positioning equipment based on STM32 is provided.
The present invention includes STM32 microprocessor control module, UM220 receiver module, CH340 serial communication modular, 12864 LCD MODULEs and button interactive module. Wherein, STM32 microprocessor control module is connected with UM220 receiver module, 12864 LCD MODULEs, button interactive module; Adopt the control core of STM32 controller as equipment, the satellite data that UM220 receiver module is received is extracted and is processed, and delivers to 12864 LCD MODULEs and shows; The data acquisition of this equipment is made up of UM220 receiver module, BD dual-band antenna, gathers satellite-signal; The output of equipment is made up of 12864 LCD MODULEs; The button interactive module of equipment is made up of four button S3, S4, S5, S7; Crystal oscillator Y1, Y2 in the clock module of equipment provides respectively stable low speed and high-speed clock source for STM32 microprocessor control module, and crystal oscillator Y3 provides stable clock source for CH340 serial communication modular.
Furtherly, the model of STM32 microprocessor is STM32F103, is welded on circuit board, or is inserted on the socket welding.
Furtherly, the model of 12864 described LCD MODULEs is ST7920.
Furtherly, the frequency of crystal oscillator Y1 is 32.678KHZ, and the frequency of the crystal oscillator Y3 that the frequency of crystal oscillator Y2 is 8MHZ is 12MHZ.
Furtherly, described power module adopts chip-shaped AMS1117-3.3V, AMS1117-5V that the 3.3V and the 5V power supply that need are provided respectively.
The product that the invention solves current big-dipper satellite location, time service is few, the problem that price is high, have simple in structure, manipulation easily, the advantage safe and reliable, cost is low.
Brief description of the drawings
Fig. 1 is structural principle schematic diagram of the present invention;
Fig. 2 is STM32 module principle figure of the present invention;
Fig. 3 is clock module schematic diagram of the present invention;
Fig. 4 is Liquid Crystal Module schematic diagram of the present invention;
Fig. 5 is button interactive module schematic diagram of the present invention;
Fig. 6 is UM220 module principle figure of the present invention;
Fig. 7 is CH340 serial communication modular schematic diagram of the present invention;
Fig. 8 is power module schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, the present invention includes STM32 microprocessor control module, UM220 receiver module, CH340 serial communication modular, 12864 LCD MODULEs, button interactive module, clock module and power module, adopt the control core of STM32 microprocessor as whole system, the satellite data that UM220 receiver module is received is extracted and is processed, deliver to 12864 LCD MODULEs and show, STM32 microprocessor control module and UM220 receiver module adopt full-duplex communication mode to work; CH340 serial communication modular is realized the full-duplex communication of UM220 receiver module and host computer; The output equipment of whole system is made up of LCD MODULE; The button interactive module of whole system is made up of four button S3, S4, S5, S7; It is that STM32 module is carried and supplied respectively low speed and high-speed clock source that clock module adopts Y1, Y2 crystal oscillator clock module, adopts Y3 to provide reliable clock source for CH340 serial communication modular; Equipment has unified power module, and its all modules that are whole system provide reliable and stable power supply. The data acquisition equipment part of whole system forms receiving satellite signal by UM220 receiver module, BD dual-band antenna. The model of STM32 microprocessor is STM32F103, is welded on circuit board, or is inserted on the socket welding, and comprises jtag interface circuit, clock circuit, reset key and STM32 Starting mode selection key. The model that LCD MODULE 12864 uses is ST7920.
In the present invention, signal receives by UM220 receiver module, BD dual-band antenna, and the signal that they are received enters STM32 microprocessor control module after the amplification of UM220 receiver module, filtering.
In the present invention by button S3, S4, S5, S7 can select synthesis display, time service pattern, station-keeping mode, four kinds of mode of operations such as pattern test the speed.
In the present invention, adopt the Y2 crystal oscillator clock module of Y1, the 8MHZ of 32.678KHZ to provide respectively low speed and high-speed clock source for STM32 module; Adopt the Y3 of 12MHZ to provide reliable clock source for CH340 serial communication modular.
In the present invention, power module adopts chip-shaped AMS1117-3.3V, AMS1117-5V that the 3.3V and the 5V power supply that need are provided respectively.
Specific embodiment
As shown in Figure 2, the PC14 of STM32 microprocessor, PC15 pin are connected with 32.768KHZ crystal oscillator Y1, then by 10pF capacitor C 21, C22 earth; OSC_IN, OSC_OUT high speed external pin be connected with 8MHZ crystal oscillator Y2 22pF capacitor C 1, C2 earth; Whether the reset circuit of described STM32 is received power supply by NRST pin by 10 kilo-ohms of resistance, by 100nF capacitor C 7 and button S2 earth, controlled and resetted by button S2; STM32 Starting mode circuit is that BOOT0, BOOT1 are connected to 3.3V power supply by resistance one end, and the other end is selected by jumping cap.
As shown in Figure 6, described UM220 receiver module uses CH340 serial communication modular to realize and host computer full-duplex communication. The serial ports TXD1 of interface circuit UM220 by resistance be connected with the one-tenth serial ports RXD of CH340 module, serial ports RXD1 is connected with the serial ports TXD of CH340 module by D2 diode, realizes stable, reliably quick full-duplex communication. Serial ports RXD2, the TXD2 of UM220 module is connected with serial ports TXD2, the RXD2 of STM32 module, realizes stable, full-duplex communication fast reliably. The resistance of the port of the TIME_PULSE of UM220 by 1 kilo-ohm and LED2 light emitting diode and 3.3V power supply join, can indicate the duty of UM220 module, RF_IN port connects BD dual-band antenna and receives VCC_RF by 100mH inductance one end, one end ground connection that is connected with capacitor C 4, the C8 of 0.1uF, can realize the effect of filtering.
As shown in Figure 4, the model that described 12864 LCD MODULEs use is ST7920. Carry contrast adjustment button, adopt 5V power supply directly to power. Each pin of RS, the RW of LCD MODULE, EN, DB0, DB1, DB2, DB3, DB4, DB5, DB6, DB7, CS1, CS2 is connected with the pin of PB0, the PB1 of STM32, PB12, PA0, PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB13, PB14 respectively, and LCD MODULE is normally worked as required.
As shown in Figure 5, described key-press module is connected with the each pin of PB5, PB6, PB7, PB8 of STM32 respectively by button S3, S4, S5, S7 one end, and the button other end is unified ground connection; By pressing, corresponding button can be selected synthesis display, time service pattern, station-keeping mode, four kinds of working methods such as pattern test the speed.
As shown in Figure 3 and Figure 7, described clock module is connected with PC14, the PC15 pin of the micro-processing of STM32 by 32.768KHZ crystal oscillator Y1, earth is again connected with capacitor C 21, the C22 of 10pF, 8MHZ crystal oscillator Y2 is connected with OSC_IN, the OSC_OUT high speed external pin of the micro-processing of STM32, the earth crystal oscillator that is connected with capacitor C 1, the C2 of 22pF again, being respectively STM32 module provides and stablizes low speed and high-speed clock source; 12MHZ crystal oscillator Y3 is connected with XI, the XO pin of CH340 serial communication modular, then the earth that is connected with capacitor C 15, the C16 of 22pF, for CH340 serial communication modular provides reliable clock source; Ensure that STM32 microprocessor is stable, worked reliably, ensured that UM220 receiver module and host computer can carry out stable full-duplex communication simultaneously.
As shown in Figure 8, described power module uses AMS1117 Voltage stabilizing module that power supply is provided, capacitor C 11, C13 by electric capacity 1uF carry out the output voltage of AMS1117 Voltage stabilizing module to carry out filtering, whether normally work with light emitting diode D3, D4 series resistance instruction power supply, the total power switch that S6 is system.
Signal collecting device of the present invention comprises UM220 and BD dual-band antenna, select working method by button interactive module, the information that STM32 microprocessor is passed back according to collecting device, carry out extraction and the processing of data by STM32, the information of the time of obtaining, longitude coordinate, dimension coordinate is delivered to LCDs and show, thereby complete time service and location.

Claims (1)

1. the Big Dipper time service positioning equipment based on STM32, is characterized in that comprising STM32 microprocessor control module, UM220 receiver module, CH340 serial communication modular, 12864 LCD MODULEs and button interactive module; Wherein, STM32 microprocessor control module is connected with UM220 receiver module, 12864 LCD MODULEs, button interactive module; Adopt the control core of STM32 controller as equipment, the satellite data that UM220 receiver module is received is extracted and is processed, and delivers to 12864 LCD MODULEs and shows; The data acquisition of this equipment is made up of UM220 receiver module, BD dual-band antenna, gathers satellite-signal; The output of equipment is made up of 12864 LCD MODULEs; The button interactive module of equipment is made up of four button S3, S4, S5, S7; Crystal oscillator Y1, Y2 in the clock module of equipment provides respectively stable low speed and high-speed clock source for STM32 microprocessor control module, and crystal oscillator Y3 provides stable clock source for CH340 serial communication modular; Specific as follows:
PC14, the PC15 pin of STM32 microprocessor are connected with 32.768KHZ crystal oscillator Y1, then by 10pF capacitor C 21, C22 earth; OSC_IN, OSC_OUT high speed external pin be connected with 8MHZ crystal oscillator Y2 22pF capacitor C 1, C2 earth; Whether the reset circuit of STM32 is received power supply by NRST pin by 10 kilo-ohms of resistance, by 100nF capacitor C 7 and button S2 earth, controlled and resetted by button S2; STM32 microprocessor Starting mode circuit is that BOOT0, BOOT1 are connected to 3.3V power supply by resistance one end, and the other end is selected by jumping cap;
UM220 receiver module uses CH340 serial communication modular to realize and host computer full-duplex communication; The serial ports TXD1 of UM220 receiver module is connected with the serial ports RXD of CH340 serial communication modular by resistance R 8; Serial ports RXD1 is connected with the serial ports TXD of CH340 serial communication modular by diode D2, realizes stable, full-duplex communication fast reliably; Serial ports RXD2, the TXD2 of UM220 receiver module is connected with serial ports TXD2, the RXD2 of STM32 microprocessor, realizes stable, full-duplex communication fast reliably; The port of the TIME_PULSE of UM220 receiver module joins with 3.3V power supply by resistance R 7 and the LED 2 of 1 kilo-ohm, the duty of instruction UM220 receiver module, RF_IN port connects BD dual-band antenna, receive VCC_RF by 100mH inductance L I mono-end, one end ground connection that is connected with capacitor C 4, the C8 of 0.1uF, realizes the effect of filtering;
The model that 12864 LCD MODULEs use is ST7920; Carry contrast adjustment button, adopt 5V power supply directly to power; Each pin of RS, the RW of LCD MODULE, EN, DB0, DB1, DB2, DB3, DB4, DB5, DB6, DB7, CS1, CS2 is connected with the pin of PB0, the PB1 of STM32 microprocessor, PB12, PA0, PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB13, PB14 respectively, and LCD MODULE is normally worked as required;
Described key-press module is connected with the each pin of PB5, PB6, PB7, PB8 of STM32 respectively by button S3, S4, S5, S7 one end, and the button other end is unified ground connection; Can select synthesis display, time service pattern, station-keeping mode, these four kinds of working methods of the pattern that tests the speed by pressing corresponding button;
Clock module is connected with PC14, the PC15 pin of the micro-processing of STM32 by 32.768KHZ crystal oscillator Y1, earth is again connected with capacitor C 21, the C22 of 10pF, 8MHZ crystal oscillator Y2 is connected with OSC_IN, the OSC_OUT high speed external pin of STM32 microprocessor, the earth crystal oscillator that is connected with capacitor C 1, the C2 of 22pF again, being respectively STM32 microprocessor provides and stablizes low speed and high-speed clock source; 12MHZ crystal oscillator Y3 is connected with XI, the XO pin of CH340 serial communication modular, then the earth that is connected with capacitor C 15, the C16 of 22pF, for CH340 serial communication modular provides reliable clock source; Ensure that STM32 microprocessor is stable, worked reliably, ensured that UM220 receiver module and host computer can carry out stable full-duplex communication simultaneously;
Power module uses AMS1117 Voltage stabilizing module that power supply is provided, capacitor C 11, C13 by electric capacity 1uF carry out the output voltage of AMS1117 Voltage stabilizing module to carry out filtering, whether normally work with light emitting diode D3, D4 series resistance instruction power supply, the total power switch that S6 is system.
CN201510979816.8A 2015-12-23 2015-12-23 Big Dipper time service location equipment based on STM32 Active CN105589084B (en)

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CN106355122A (en) * 2016-08-25 2017-01-25 江门市汇朗工业机器人有限公司 RF card reader circuit
CN106679443A (en) * 2016-12-30 2017-05-17 杭州电子科技大学 Remote monitoring type heating furnace control system based on STM32

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Publication number Priority date Publication date Assignee Title
CN106355122A (en) * 2016-08-25 2017-01-25 江门市汇朗工业机器人有限公司 RF card reader circuit
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