2.4G frequency band signals launch configuratorTechnical field
The present invention relates to wireless communication technology field, more particularly to a kind of 2.4G frequency band signals transmitting configurator.
Background technology
At present in conference and exhibition center, exhibition center or intra-company, generally using electronic beacon, RFID beacons, infrared biographySensor etc. come realize Internet of Things perceive, during these marker operational factors, the change of parameter needs the button by equipment itselfMarker to adjust or have directly is run with preset parameter, is shifted gears relatively simple, or even cannot change so that beaconThe application of device is greatly limited.
The content of the invention
Launch configurator the invention provides a kind of 2.4G frequency band signals, wirelessly flexible configuration marker,Greatly extend the range of application of marker.
In order to realize the purpose of the present invention, the technical scheme for being used is：2.4G frequency band signals launch configurator, including receiveHair module and USB Hub circuits, transceiver module are connected by USB Hub circuits with host computer, and host computer passes through USB Hub circuitsTransceiver module is manipulated, transceiver module adds configuration parameter information by being wirelessly sent to marker, marker after receivingCarrying row configuration parameter, transceiver module includes configurator master chip, power supply circuit and configurator antenna circuit, power supply circuit and matches somebody with somebodyPut device antenna circuit to be connected with configurator master chip, power supply circuit is used to provide power supply for configurator master chip.
Used as prioritization scheme of the invention, configurator master chip is by configuration parameter information by Bluetooth wireless transmission to beaconDevice.
Used as prioritization scheme of the invention, configurator master chip is CC2540 chips.
Used as prioritization scheme of the invention, the groundwork frequency circuit of CC2540 chips includes the passive crystal oscillator of 32MHzWith the matching capacitance of 27pF, the first pin of the passive crystal oscillator of 32MHz is grounded by the matching capacitance of 27pF, and 32MHz's is passive3rd pin of crystal oscillator is grounded by the matching capacitance of 27pF.
Used as prioritization scheme of the invention, configurator antenna circuit includes radio-frequency filter chip, electric capacity C13-1, resistanceR4-1 and antenna, antenna are connected by resistance R4-1 with the first pin of radio-frequency filter chip, and the of radio-frequency filter chipOne pin is grounded by electric capacity C13-1.
Used as prioritization scheme of the invention, power supply circuit includes linear power supply chip, filter capacitor C16-1, feedback capacityC17-1 and π type filter circuits, linear power supply chip is RT9193-33 chips, and the VIN pins of linear power supply chip are by filteringElectric capacity C16-1 is grounded, and the BP pins of linear power supply chip are grounded by feedback capacity C17-1, and the VOUT of linear power supply chip drawsPin is by exporting 3.3V voltages after π type filter circuits.
Used as prioritization scheme of the invention, 2.4G frequency band signals transmitting configurator also includes DEBUG circuits, DEBUG circuitsFor providing detail programming interface for configurator master chip.
Used as prioritization scheme of the invention, USB Hub circuits include USB master chips and USB interface protection chip, USB masterChip be GL850G chips, USB interface protection chip be PJSRV05-4 chips, GL850G chips by PJSRV05-4 chips withHost computer is connected.
Used as prioritization scheme of the invention, transceiver module is several, and USB Hub are passed through after the parallel connection of several transceiver modulesCircuit is connected with host computer.
The present invention has positive effect：1) simple structure of the present invention, logic is carried without complicated circuit；
2) present invention has filled up the blank that long distance wireless configures marker so that it is more flexible and changeable that marker is configured,The effective use scope for expanding marker；
3) it is of the invention cheap for manufacturing cost；
4) present invention supports the configuration of single or multiple markers by one or more transceiver modules.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is the circuit diagram of configurator master chip of the present invention；
Fig. 2 is the groundwork frequency circuit figure of CC2540 chips；
Fig. 3 is the circuit diagram of configurator antenna circuit；
Fig. 4 is the circuit diagram of power supply circuit；
Fig. 5 is the reset circuit of CC2540 chips；
Fig. 6 is the circuit diagram of CC2540 chip indicator lamps；
Fig. 7 is the circuit diagram of USB master chips；
Fig. 8 is the circuit diagram that USB interface protects chip；
Fig. 9 is the usb circuit figure of the present invention of CC2540 chips.
Specific embodiment
As shown in figure 1, the invention discloses a kind of 2.4G frequency band signals transmitting configurator, including transceiver module and USBHub circuits, transceiver module is connected by USB Hub circuits with host computer, and host computer is entered by USB Hub circuits to transceiver moduleRow manipulation, transceiver module by configuration parameter information by being wirelessly sent to marker, join after marker is received by load operating configurationNumber, transceiver module includes configurator master chip, power supply circuit and configurator antenna circuit, power supply circuit and configurator antenna circuitIt is connected with configurator master chip, power supply circuit is used to provide power supply for configurator master chip.Wherein, configurator master chipBy configuration parameter information by Bluetooth wireless transmission to marker.
As shown in figure 1, configurator master chip is CC2540 chips, CC2540 chip carrying 2.4GHz Bluetooth Low Energy radio frequenciesPiece loading system.
As shown in Fig. 2 the groundwork frequency circuit of CC2540 chips includes the matching of the passive crystal oscillator and 27pF of 32MHzElectric capacity, the first pin of the passive crystal oscillator of 32MHz is grounded by the matching capacitance of 27pF, and the 3rd of the passive crystal oscillator of 32MHz drawsPin is grounded by the matching capacitance of 27pF.By the matching capacitance C14-1 and C14-2 of 27pF, the essence of frequency is effectively guaranteedDegree so that the stability of the passive crystal oscillator of 32MHz is 10ppm.
As shown in figure 3, configurator antenna circuit includes radio-frequency filter chip, electric capacity C13-1, resistance R4-1 and antenna,Antenna is connected by resistance R4-1 with the first pin of radio-frequency filter chip, and the first pin of radio-frequency filter chip is by electricityHold C13-1 ground connection.Radio-frequency filter chip is bluetooth filter chip 2450BM15A0002E, its operating frequency range2.4GHz~2.5GHz, 50 ohm of terminal impedance instead of the π type filter circuits of complexity, antenna transmitting and the circuit portion for receivingSet up meter separately to simplify, the receiving sensitivity of CC2540 chips increases, receive signal distance and increase to 15 meters or so, electric capacity C13-1 is usedIn bypass, the stray inductance of antenna part is eliminated；Resistance R4-1 is used to adjust the terminal impedance of antenna, it is also possible to adjust bluetooth filterThe transmission power of ripple device chip.
As shown in figure 4, power supply circuit includes linear power supply chip, filter capacitor C16-1, the filter of feedback capacity C17-1 and π typeWave circuit, linear power supply chip is RT9193-33 chips, and the VIN pins of linear power supply chip are connect by filter capacitor C16-1Ground, the BP pins of linear power supply chip are grounded by feedback capacity C17-1, and the VOUT pins of linear power supply chip are filtered by π types3.3V voltages are exported after wave circuit.Wherein, RT9193-33 chips can be by outside 5V voltage conversions into operating voltage 3.3V, filterRipple electric capacity C16-1 is used for power input filtering clutter, and feedback capacity C17-1 is used to adjust RT9193-33 chip output voltages,Output voltage is constant in 3.3V, and π types filter circuit includes electric capacity C4-1, electric capacity C19-1 and inductance L1-1, filters output 3.3VThe ripple of voltage.
The reset circuit of CC2540 chips is illustrated in figure 5, reset circuit is made up of RC circuits, RC circuits include resistanceR6-1 and electric capacity C18-1, reset circuit Low level effective, when electricity on V33-1, voltage fills through resistance R6-1 to electric capacity C18-1Electricity, charging transient terminals NRST-1 is changed into low level, wherein, the charging interval by resistance R6-1 resistance value and electric capacity C18-1Capacitance calculate and obtain, after charging complete, terminals NRST-1 keep high level, reset completion.
As shown in fig. 6, CC2540 chips are also associated with indicator lamp D1-1,9 pin by main CC2540 chips are P1.1 controls,Resistance R5-1 is current-limiting resistance, and the electric current of indicator lamp is controlled by resistance R5-1.
2.4G frequency band signals transmitting configurator also includes DEBUG circuits, and DEBUG circuits connect for the programming of CC2540 chipsMouthful, including DD signals, DC signals and NRST reset signals, program can be changed using CC-DEBUGER programmable devices, it is also possible to enterRow real-time simulation.
As shown in FIG. 7 and 8, USB Hub circuits include USB master chips and USB interface protection chip, and USB master chips areGL850G chips, USB interface protection chip is PJSRV05-4 chips, and GL850G chips pass through PJSRV05-4 chips and host computerIt is connected.Transceiver module is several, is connected with host computer by USB Hub circuits after the parallel connection of several transceiver modules.Wherein,USB Hub circuit purposes are that such as, transceiver module A, transceiver module B and transceiver module C use USB line all the way by transceiver moduleConnection host computer, PJSRV05-4 chip internals are parallel with 4 TVS protection pipes, the transient voltage produced when can be plugged to USBSuppressed.
The usb circuit of CC2540 chips is illustrated in figure 9, CC2540 chips have USB transparent transmission functions, wherein, DP4It is one group of USB differential signal with DM4, terminal coupling is carried out using resistance R1-1 and R2-1；Electric capacity C1-1 and electric capacity C2-1 is sideRoad electric capacity, eliminates the stray inductance of long range signals line；Holding wire DP4 is pulled up using resistance R3-1, represents CC2540 coresThe USB interface of piece is operated in fast mode.
When using, marker enters scan pattern after opening, and marker receives 2.4G frequency band signals transmitting configurator and sendsThe configuration parameter information come, after the completion of configuration, marker enters normal mode of operation.
Particular embodiments described above, has been carried out further in detail to the purpose of the present invention, technical scheme and beneficial effectDescribe in detail bright, should be understood that and the foregoing is only specific embodiment of the invention, be not intended to limit the invention, it is allWithin the spirit and principles in the present invention, any modification, equivalent substitution and improvements done etc., should be included in guarantor of the inventionWithin the scope of shield.