CN103778673A - Electronic communication device, electronic label and electronic non-stop charging system - Google Patents
Electronic communication device, electronic label and electronic non-stop charging system Download PDFInfo
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- CN103778673A CN103778673A CN201310142728.3A CN201310142728A CN103778673A CN 103778673 A CN103778673 A CN 103778673A CN 201310142728 A CN201310142728 A CN 201310142728A CN 103778673 A CN103778673 A CN 103778673A
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Abstract
The invention discloses an electronic communication device, an electronic label and an electronic non-stop charging system. The electronic communication apparatus comprises a transmit-receive antenna, a main controller, an emission channel, a first reception channel, a second reception channel, a first wake-up channel and a second wake-up channel, wherein the emission channel, the first reception channel, the second reception channel the first wake-up channel and the second wake-up channel are parallelly connected between the transmit-receive antenna and the main controller. The two reception channels and the two wake-up channels are provided with order-switching reception terminals which are in signal connection with the order-switching output terminal of the main controller. The gating of the two reception channels and the two wake-up channels can be realized according to the switching order outputted from the main controller. The electronic communication device is applicable to the electronic label. The emission channels emit landmark signals or signal according with international standard according to the control of the software of the main controller. The first reception channel, the second reception channel, the first wake-up channel and the second wake-up channel perform switching according to the switching order of the main controller to enable various reception channels and wake-up channel to be in a signal-flowing state, so that the electronic label is adaptable to various ETC standard usage requirement.
Description
Technical field
The present invention relates to intelligent transportation or DSRC Dedicated Short Range Communications, field, be specifically related to a kind of electronic communication device, electronic tag and electronic charging system without parking.
Background technology
Here first the relevant technical terms relating in the present invention is simply introduced:
EEROM:EEROMElectronicallyErasableRead-OnlyMemory, i.e. electric erasable read only storer;
ESAM:EmbeddedSecureAccessModule, i.e. embedded safe control module;
PA:PowerAmplifier, i.e. power amplifier;
LNA:LowNoiseAmplifier, i.e. low noise amplifier;
MCU:MicroControlUnit, i.e. microprocessor or master controller;
ETC:ElectronicTollCollection, i.e. electronic charging system without parking;
LDO:LowDropoutRegulator, i.e. low pressure difference linear voltage regulator;
LED:LightEmittingDiode, i.e. light emitting diode.
In current intelligent traffic administration system field, country has put into effect ETC standard, standard No. is GB/T20851.1-2007, electronic charging Dedicated Short Range Communications,, but some areas are still being used local ETC standard, as In Guangdong Province, standard No. is DB44_127-2003, highway in Guangdong province networking charging system.The electronic tag of each standard has a lot of common technical characterstics, also has a lot of different places.And existing market has national standard of being suitable for (hereinafter to be referred as GB) and provincial standard as the RSU dual-mode antenna of Guangdong standard (hereinafter to be referred as wide mark), but also there is no corresponding simultaneous adaptation GB and provincial standard as wide target electronic tag.Enter once the vehicle of GB electronic tag is installed the area that adopts terrestrial reference electronic tag to carry out electric non-stop toll transaction, electric non-stop toll transaction just can not be carried out; Equally, enter once the vehicle of terrestrial reference electronic tag is installed the area that adopts GB electronic tag to carry out electric non-stop toll transaction, normal electric non-stop toll transaction can not be carried out.
Summary of the invention
In order to make electronic tag both can carry out electric non-stop toll transaction according to GB, can carry out electric non-stop toll transaction according to terrestrial reference again, the invention provides a kind of electronic communication device, electronic tag and electronic charging system without parking.
To achieve these goals, the technical solution adopted in the present invention is: a kind of electronic communication device, comprise dual-mode antenna and master controller, and also comprise: transmitting path, the first receiving path, the second receiving path, first are waken path and second up and waken path up; Described transmitting path, the first receiving path, the second receiving path, first are waken path and second up and are waken path up and be parallel between described dual-mode antenna and master controller; Described the first receiving path, the second receiving path, first are waken path and second up and are waken path up and be respectively equipped with switching command receiving end, be connected with the switching command output end signal of described master controller, according to the switching command of described master controller output, realize described the first receiving path, the second receiving path, first and wake path and second up and wake up the gating of path.
The present invention also provides a kind of electronic tag, comprises electronic communication device as above.
The present invention also provides a kind of electronic charging system without parking, comprises roadside unit and electronic tag, and described electronic tag uses electronic communication device as above and roadside unit to communicate.
The invention has the beneficial effects as follows: this electronic communication device adopts transmitting path to share, and the first receiving path, the second receiving path, first are waken path and second up and waken the technical scheme that path independently arranges respectively up.According to the switching command of master controller switching command output terminal output, the first receiving path, the second receiving path, first are waken switching command receiving end that path and second wakes channel setting up up and are carried out correspondence and switch, so that different receiving paths and wake path up in signal circulation status, be applicable to different user demands to meet electronic communication device, as being applied in electronic tag when electronic communication device, transmitting path is public, the first receiving path and first wake up path through switch after in signal circulation status, electronic tag is applicable to GB user demand; The second receiving path and second wake up path through switch after in signal circulation status, electronic tag is applicable to terrestrial reference as wide mark user demand.
Accompanying drawing explanation
Fig. 1 is the electronic communication device electrical block diagram of the embodiment of the present invention one;
Fig. 2 is the electronic communication device electrical block diagram of the embodiment of the present invention two.
Embodiment
By reference to the accompanying drawings the present invention is described in further detail below by embodiment.
Electronic communication device in the present invention, when it is applied in ETC system, while being applicable to GB (standard No.: GB/T20851.1-2007) and terrestrial reference as the electronic tag of wide mark (standard No.: GB/T20851.1-2007) to form one simultaneously, the first receiving path of electronic communication device, the second receiving path, first are waken path and second up and are waken path up and refer to successively GB receiving path, and terrestrial reference receiving path, GB wake path up and terrestrial reference wakes path up.
Embodiment mono-
Please refer to Fig. 1, the present embodiment provides a kind of to be had the high modulation degree of depth and can be applicable to the electronic communication device under different environments for use simultaneously.
The electronic communication device providing in the present embodiment comprises dual-mode antenna 101 and master controller, also comprises that transmitting path, the first receiving path, the second receiving path, first wake path and second up and wake path up; Transmitting path, the first receiving path, the second receiving path, first are waken path and second up and are waken path up and be parallel between dual-mode antenna 101 and master controller; The first receiving path, the second receiving path, first are waken path and second up and are waken path up and be respectively equipped with switching command receiving end, be connected with the switching command output end signal of master controller, according to the switching command of master controller output, realize the first receiving path, the second receiving path, first and wake path and second up and wake up the gating of path.
Respectively transmitting path, the first receiving path, the second receiving path, first are waken up to path below and the second circuit structure that wakes path up describes in detail.
Transmitting path is provided with modulation signal controlled end, be connected with the I/O modulation signal transmitting terminal signal of master controller, the modulation signal controlled end of transmitting path receives the modulation signal of the I/O modulation signal transmitting terminal transmitting of master controller, and completes in transmitting path the modulation that transmits.Transmitting path comprises radio-frequency (RF) transceiver, the tenth microwave switch 111, for regulating power regulator and first microwave switch 102 of radio-frequency (RF) transceiver emissive power; The data transmission terminal of power regulator is connected with master controller signal, and input end is connected with the output terminal of the tenth microwave switch 111, and output terminal is connected with the input end of the first microwave switch 102; The input end of the tenth microwave switch 111 is connected with the transmitting output pin of radio-frequency (RF) transceiver; The signal access pin of radio-frequency (RF) transceiver is connected with master controller signal; The output terminal of the first microwave switch 102 is connected with dual-mode antenna 101; The two has modulation signal controlled end the tenth microwave switch 111 and the first microwave switch 102, and the modulation signal of the I/O modulation signal transmitting terminal output of master controller is transmitted into respectively the modulation signal controlled end of the tenth microwave switch 111 and the first microwave switch 102.Particularly, power regulator comprises power amplifier 112 and digital regulation resistance, and the input end of power amplifier 112 is connected with the output terminal of the tenth microwave switch 111, and output terminal is connected with the first microwave switch 102 input ends; The data transmission terminal of digital regulation resistance is connected with master controller, and output terminal and power amplifier 112 input ends join.In transmitting path, also access the 9th microwave switch 110 and LC lattice network 119, LC lattice network 119 is connected with the input end of the 9th microwave switch 110; The output terminal of the 9th microwave switch 110 is connected with the input end of power amplifier 112.
The first receiving path comprises the second microwave switch 103 and radio-frequency (RF) transceiver, and the input end of the second microwave switch 103 is connected with dual-mode antenna 101, and output terminal receives input pin with first of radio-frequency (RF) transceiver and is connected; The signal access pin of radio-frequency (RF) transceiver is connected with master controller signal; The switching command receiving end of the second microwave switch 103 is connected with master controller switching command output end signal.
The second receiving path comprises the 3rd microwave switch 104, the 5th microwave switch 106, low noise amplifier 113, the 7th microwave switch 108, detector diode 114 and the first signal processor that connect successively; The 3rd microwave switch 104 is also connected with dual-mode antenna 101; First signal processor is also connected with master controller signal; The 3rd microwave switch 104, the 5th microwave switch 106 and the 7th microwave switch 108 threes' switching command receiving end and the switching command output end signal of master controller are connected.
First wakes path up comprises the 3rd microwave switch 104, the 4th microwave switch 105 and radio-frequency (RF) transceiver, and the input end of the 3rd microwave switch 104 is connected with dual-mode antenna 101, and output terminal is connected with the input end of the 4th microwave switch 105; The output terminal of the 4th microwave switch 105 receives input pin with second of radio-frequency (RF) transceiver and is connected; The signal access pin of radio-frequency (RF) transceiver is connected with master controller signal; The two switching command receiving end of the 3rd microwave switch 104 and the 4th microwave switch 105 is connected with the switching command output end signal of master controller.
Second wakes path up comprises the 3rd microwave switch 104, the 6th microwave switch 107, the 8th microwave switch 109, detector diode 114 and secondary signal processor, dual-mode antenna 101, the 3rd microwave switch 104, the 6th microwave switch 107, the 8th microwave switch 109, detector diode 114 are connected successively with secondary signal processor, and secondary signal processor is also connected with master controller signal; The 3rd microwave switch 104, the 6th microwave switch 107 and the 8th microwave switch 109 threes' switching command receiving end and the switching command output end signal of master controller are connected.
Wake path and second up and wake up path except above-mentioned transmitting path, the first receiving path, the second receiving path, first, this electronic communication device also comprises power module and contactless card reading circuit.Contactless card reading circuit is connected with master controller; Power module comprises the first power supply 115, second source 116, the 3rd power supply 117 and the 4th power supply 118; The first power supply 115 provides working power for master controller and radio-frequency (RF) transceiver; Second source 116 provides working power for contactless card reading circuit; The 3rd power supply 117 provides working power for power amplifier 112; The 4th power supply 118 provides working power for the first and second receiving paths; The Push And Release of I/O control end control second source 116, the 3rd power supply 117 and the 4th power supply 118 of master controller.
The present embodiment is applied to electronic tag take electronic communication device and is described further as example.This example provides a kind of electronic tag that has the high modulation degree of depth and can be applicable to GB and terrestrial reference simultaneously, is marked with here and is extensively designated as example, as also there being other provincial standards, can make electronic tag according to the same principle this example Suo Shu.
(1) GB electronic tag
Main controller controls the first receiving path and first is waken path up in on-state, also control the radiofrequency signal that transmitting path transmitting meets GB, this electronic tag can normally be suitable for the ETC transaction of GB, the principle of work when elaborating electronic tag below and meeting GB duty.
1, transmitting path
By the SPI communication port on master controller, main controller controls radio-frequency (RF) transceiver, settling signal modulation, mixing, bandpass filtering and the preliminary amplification etc. that transmits in radio-frequency (RF) transceiver, the maximum transmission power of radio-frequency (RF) transceiver can reach 2dBm, and can realize the power adjustments from 2dBm to-20dBm, 5.8GHz power emission signal through processing such as modulation, mixing, bandpass filtering and preliminary amplifications is exported by the transmitting terminal of radio-frequency (RF) transceiver, then launches through the tenth microwave switch 111, power regulator, the first microwave switch 102 and dual-mode antenna 101.
In order to increase the emissive power of radio-frequency (RF) transceiver in transmitting path, this transmitting path is connected with power regulator, transmit and amplify adjusting through power amplifier 112 and digital regulation resistance, launched by the first microwave switch 102 and dual-mode antenna 101 again through amplifying transmitting of regulating.Wherein, master controller carries out data communication by data transmission terminal and the digital regulation resistance of digital regulation resistance, and control figure potentiometer is with regulating power amplifier 112, and then regulates the emissive power of radio-frequency (RF) transceiver.Power amplifier output power controlled range, is changed and is reached the object of controlling output power by the terminal voltage of digital regulation resistance power ratio control amplifier 112 to 22dBm at 12dBm from 1.5V to 3.0V, and certainly, digital regulation resistance also can adopt DAC to substitute.Simultaneously, generally, the driving circuit of digital regulation resistance self can be realized the voltage-regulation of power amplifier 112, if when the driving circuit of digital regulation resistance self can not be realized the voltage-regulation of power amplifier 112, can adopt digital regulation resistance and drive amplifier jointly to realize.
2, the first receiving path
Electronic communication device is applied in electronic tag, the first receiving path is GB receiving path, receive the ETC signal coming through the second microwave switch 103 by dual-mode antenna 101, receiving input pin by first of radio-frequency (RF) transceiver enters in radio-frequency (RF) transceiver, carry out LNA amplification, mixing, bandpass filtering, automatic gain control, analog to digital conversion and signal demodulation therein,, further process for master controller to master controller by the ETC signal after radio-frequency (RF) transceiver signal access pin output demodulation.Here, the second microwave switch 103 is provided with switching command receiving end, is connected with the switching command output end signal of master controller, switches according to the switching command of master controller.
3, first wake path up
Electronic communication device is applied in electronic tag, first wake up receive path be that GB is waken path up, receive from dual-mode antenna 101 terminations the ETC wake-up signal of coming, through the 3rd microwave switch 104, again through 5.8GHz bandpass filter (not shown in figure 1), the assorted letter of filtering, useful signal is again through the 4th microwave switch 105, receiving input pin by second of radio-frequency (RF) transceiver enters in radio-frequency (RF) transceiver, again through its inner detection, the logical frequency discriminator of band, detect after the envelope of 10 14KHz, the wake-up level of output " 1 ", after master controller detects that effective wake-up level is " 1 ", just can enable transmitting path, receiving path and contactless card reading circuit etc., complete ETC transaction.Here, the two is provided with switching command receiving end the 3rd microwave switch 104 and the 4th microwave switch 105, is connected with the switching command output end signal of master controller, switches according to the switching command of master controller.
(2) extensively mark electronic tag
Main controller controls the second receiving path and second is waken path up in on-state, also control transmitting path transmitting and meet wide target radiofrequency signal, this electronic tag can normally be suitable for wide target ETC transaction, elaborates electronic tag below and meets the principle of work while extensively marking duty.
1, transmitting path
In wide mark, transmitting path composition and working principle has increased following part on the basis of GB transmitting path:
Due under the control of master controller, radio-frequency (RF) transceiver is just launched and is met wide target carrier only, and during through the tenth microwave switch 111 and the first microwave switch 102, carrier only need to carry out high depth modulation.In order to realize provincial standard as the high depth modulation of wide mark electronic tag, this transmitting path is provided with modulation signal controlled end, is connected with the I/O modulation signal transmitting terminal signal of master controller.Particularly, the two has modulation signal controlled end the tenth microwave switch 111 and the first microwave switch 102, and the modulation signal of the I/O modulation signal transmitting terminal output of master controller is transmitted into respectively the modulation signal controlled end of the tenth microwave switch 111 and the first microwave switch 102.Modulation signal circulation is as follows: under the control of master controller, radio-frequency (RF) transceiver transmitting 5.8G carrier only signal, first through the tenth microwave switch 111, and meeting the modulation signal controlled end V2 that wide target modulation signal is added to the tenth microwave switch 111 from master controller I/O modulation signal transmitting terminal output, 5.8GHz carrier only is after the tenth microwave switch 111 like this, under the control of the tenth microwave switch 111, output meets wide target modulation signal, at this moment the degree of modulation of modulation signal approximately 90% left and right, again through the amplification of power amplifier 112, enter the first microwave switch 102, equally meeting the modulation signal controlled end V3 that wide target modulation signal is added to the first microwave switch 102 from the I/O modulation signal transmitting terminal output of master controller, so again carry out the synchronous modulation with the tenth microwave switch 111, the degree of modulation of modulation signal arrives 99.5%.The signal of realizing after high depth modulation is launched from dual-mode antenna 101, and concrete modulation signal flow process is shown in Fig. 1 shown in dotted line.
In order to guarantee that the tenth microwave switch 111 is in good channel status, and obtain good path isolation, so that transmitting path has higher degree of modulation, in transmitting path, access the 9th microwave switch 110 and LC lattice network 119, LC lattice network 119 is connected with the input end of the 9th microwave switch 110; The output terminal of the 9th microwave switch 110 is connected with the input end of power amplifier 112.
2, the second receiving path
Electronic communication device is applied in electronic tag, the second receiving path is terrestrial reference receiving path, what receive from dual-mode antenna 101 meets wide target ETC signal through the 3rd microwave switch 104, bandpass filter (not shown in figure 1) and the 5th microwave switch 106, enter and in low noise amplifier 113, amplify 10dB gain, carry out envelope detection through the 7th microwave switch 108 and detector diode 114 successively again, again through the low-pass filtering of first signal processor, signal is through processing such as amplification and shapings, meet wide target ETC signal to master controller from the output terminal output of first signal processor, separate mediation transaction processing in master controller inside.Here, the 3rd microwave switch 104, the 5th microwave switch 106 and the 7th microwave switch 108 threes are provided with switching command receiving end, are connected with the switching command output end signal of master controller, switch according to the switching command of master controller.
3, second wake path up
Electronic communication device is applied in electronic tag, second to wake path up be that low mark wakes path up, that receives from dual-mode antenna 101 terminations meets wide target ETC wake-up signal successively through the 3rd microwave switch 104, the 6th microwave switch 107, the 8th microwave switch 109, carry out envelope detection through detector diode 114 again, again through the low-pass filtering of secondary signal processor, signal is through processing such as amplification and shapings, detect after the envelope of 10 14KHz, the wake-up level of output " 1 ", after master controller detects that effective wake-up level is " 1 ", just can enable transmitting path, receiving path and contactless card reading circuit etc., finally complete ETC transaction.Here, the 3rd microwave switch 104, the 6th microwave switch 107 and the 8th microwave switch 109 threes are provided with switching command receiving end, are connected with the switching command output end signal of master controller, switch according to the switching command of master controller.
Based on above-mentioned introduction, according to the switching command of master controller output, realize the first receiving path, the second receiving path, first wakes path and second up wakes the gating of path up, realize GB receiving path, terrestrial reference receiving path, GB is waken path and terrestrial reference up and wakes up the gating of path, so that electronic tag is suitable for the ETC transaction of various criterion: the vehicle that this electronic tag is installed, enter while using provincial standard as wide target area, when transmitting path is in on-state, the switching command output terminal output switching order of the master controller of electronic tag, make the 3rd microwave switch 114, the 4th microwave switch 115, the 5th microwave switch 116, the 6th microwave switch 117, the switching command receiving end of the 7th microwave switch 118 and the 8th microwave switch 119 6 receives switching command and in closure state, so that waking path up, the second receiving path and second connects, meanwhile, the carrier only signal of master controller transmitting 5.8GHz, the I/O modulation signal transmitting terminal transmitting modulation signal of master controller, the tenth microwave switch 111 and first microwave switch 102 the two modulation signal controlled end that have receive modulation signal, complete the modulation of signal in transmitting path, so, can complete normal ETC transaction in wide mark, the vehicle of this electronic tag is installed, while using GB to complete ETC transaction, when transmitting path is in on-state, the switching command output terminal output switching order of the master controller of electronic tag, make the second microwave switch 103, the 3rd microwave switch 114 and the 4th microwave switch 115 threes' switching command receiving end receive switching command in closure state, connect so that the first receiving path and first is waken path up, so, can complete normal ETC transaction in GB.
Peripheral circuit in this electronic tag mainly comprises: power module, contactless card reading circuit, display, hummer, EEROM and ESAM.
In this embodiment, master controller has extremely low power consumption, as circuit logic control and the soft decoding of signal, be mainly used in controlling the opening and closing of the each power supply of power module, realize utmost point low speed paper tape reader static power disspation, in order to meet the control to power module, structurally, master controller has also increased by two corresponding I/O control ends on prior art basis; Master controller is also for controlling the Push And Release of multiple microwave switches, and controls radio-frequency (RF) transceiver and carry out the processing such as transmitting, reception and signal demodulator of signal, and also control contactless Card Reader chip in contactless card reading circuit carries out IC Card Reader simultaneously; Master controller is connected respectively with display, hummer, EEROM and ESAM, controls the Communication Control of the demonstration of display and the auditory tone cues of hummer and EEROM and ESAM etc., and display adopts light-emitting diode display; Wake up in path at signal, because master controller need to detect effective wake-up level, thereby structurally, on master controller, also increased highly sensitive wake-up signal receiving port.
Contactless card reading circuit is connected with master controller, and contactless card reading circuit selects SPI interface to carry out communication with master controller, meets ISO14443 standard, supports the typeA non-contact communication agreement under 13.56MHz frequency.When circuit design, note mating with dual-mode antenna 101, and meticulously choose inductance and electric capacity, contactless card reading circuit is debugged to best card reading status.
The power module of electronic tag comprises the first power supply 115, second source 116, the 3rd power supply 117 and the 4th power supply 118, these four power supplys are all LDO power supply composition, except LDO1, the switch of LDO2, LDO3 and LDO4 is by the control of master controller I/O control end, and the management of power module is completed by master controller.The first power supply 115 provides working power for master controller and radio-frequency (RF) transceiver; Second source 116 provides working power for contactless card reading circuit; The 3rd power supply 117 provides working power for power regulator; The 4th power supply 118 provides working power for signal receiving path; The Push And Release of main controller controls second source 116, the 3rd power supply 117 and the 4th power supply 118.
The electronic communication device that this embodiment provides has following beneficial effect: adopt transmitting path to share, the first receiving path, the second receiving path, first are waken path and second up and waken the technical scheme that path independently arranges respectively up.According to the switching command of master controller switching command output terminal output, the first receiving path, the second receiving path, first are waken switching command receiving end that path and second wakes channel setting up up and are carried out correspondence and switch, so that different receiving paths and wake path up in signal circulation status, thereby make electronic communication device be applicable to different user demands.According to identical principle, this electronic communication device can also expand design.
The electronic communication device that this embodiment is provided is applied to electronic tag and has following beneficial effect:
(1) for provincial standard as wide mark, the mode that adopts microwave switch and master controller to match in transmitting path realizes high depth modulation signal, is conducive to improve the signal to noise ratio (S/N ratio), the power utilization that transmit.Wide absolute altitude depth modulation electronic tag relatively in the past, in the present embodiment, electronic tag adopts the I/O modulation signal transmitting terminal transmitting modulation signal of master controller to replace original employing medium vibration to produce modulation signal, the signal producing without medium vibration is as modulating signal source, the I/O modulation signal transmitting terminal of master controller is transmitted into modulation signal the modulation signal controlled end of transmitting path, realizes high modulation coefficient ASK transmitting in transmitting path.Owing to having saved medium, make more miniaturization of electronic tag; Meanwhile, master controller I/O modulation signal transmitting terminal transmitting modulation signal, relative medium vibration transmitting modulating signal source, has avoided because dielectric stability is poor the generation of the serious situation of frequency deviation.
(2) this electronic tag adopts the mode that in microwave switch and master controller, software control combines, and has solved GB and provincial standard as the two compatibility issue of wide mark, makes same electronic tag can be applicable to GB and provincial standard as wide mark simultaneously.
Embodiment bis-
Please refer to Fig. 2, electronic communication device comprises dual-mode antenna 201, master controller, transmitting path, receiving path and wakes path up, transmitting path, receiving path and wake path up and be parallel between dual-mode antenna 201 and master controller.
Transmitting path comprises radio-frequency (RF) transceiver, the 7th microwave switch 208, power amplifier 209 and the first microwave switch 202, the 7th microwave switch 208, power amplifier 209 and the first microwave switch 202 are connected successively, the signal access pin of radio-frequency (RF) transceiver is connected with master controller signal, transmitting output pin is connected in the input end of the 7th microwave switch 208, and the output terminal of the first microwave switch 202 is connected with dual-mode antenna 201.Transmitting path is provided with modulation signal controlled end, be connected with the I/O modulation signal transmitting terminal signal of master controller, the modulation signal controlled end of transmitting path receives the modulation signal of the I/O modulation signal transmitting terminal transmitting of master controller, and completes in transmitting path the modulation that transmits.Particularly, in transmitting path, the two has modulation signal controlled end the 7th microwave switch 208 and the first microwave switch 202, and the modulation signal of the I/O modulation signal transmitting terminal output of master controller is transmitted into respectively the modulation signal controlled end of the 7th microwave switch 208 and the first microwave switch 202.In order to guarantee that the 7th microwave switch 208 is in good channel status, and obtain good path isolation, so that transmitting path has higher degree of modulation, in transmitting path, also access the 6th microwave switch 207 and LC lattice network 210, LC lattice network 210 is connected with the input end of the 6th microwave switch 207; The output terminal of the 6th microwave switch 207 is connected with the input end of power amplifier 209.Due under the control of master controller, radio-frequency (RF) transceiver is just launched and is met wide target carrier only, and during through the 7th microwave switch 208 and the first microwave switch 202, carrier only need to carry out high depth modulation.Modulation signal circulation is as follows: under the control of master controller, radio-frequency (RF) transceiver transmitting 5.8G carrier only signal, first through the 7th microwave switch 208, and the modulation signal of exporting from the I/O modulation signal transmitting terminal of master controller is added to the modulation signal controlled end V2 of the 7th microwave switch 208, 5.8GHz carrier only is after the 7th microwave switch 208 like this, under the control of the 7th microwave switch 208, output modulation signal, at this moment the degree of modulation of modulation signal approximately 90% left and right, again through the amplification of power amplifier 209, enter the first microwave switch 202, the modulation signal of exporting from the I/O modulation signal transmitting terminal of master controller is equally added to the modulation signal controlled end V3 of the first microwave switch 202, so again carry out the synchronous modulation with the 7th microwave switch 208, the degree of modulation of modulation signal arrives 99.5%.The signal of realizing after high depth modulation is launched from dual-mode antenna 101, and concrete modulation signal flow process is shown in Fig. 2 shown in dotted line.
Receiving path comprises the second microwave switch 203, low noise amplifier 216, the 4th microwave switch 205, detector diode 211 and the first signal processor that connect successively; The second microwave switch 203 is also connected with dual-mode antenna 201; First signal processor is also connected with master controller signal.Receive signal after the second microwave switch 203 and bandpass filter (not shown Fig. 2) from dual-mode antenna 201, enter and in low noise amplifier 113, amplify 10dB gain, carry out envelope detection through the 4th microwave switch 205 and detector diode 211 successively again, again through the low-pass filtering of first signal processor, signal is through processing such as amplification and shapings, from the output terminal output signal of first signal processor to master controller, separate reconciliation process in master controller inside.
Wake path up and comprise the 3rd microwave switch 204, the 5th microwave switch 206, detector diode 211 and secondary signal processor, the 3rd microwave switch 204, the 5th microwave switch 206, detector diode 211 are connected successively with secondary signal processor, and secondary signal processor is also connected with master controller signal.The wake-up signal of receiving from dual-mode antenna 201 terminations is successively through the 3rd microwave switch 204 and the 5th microwave switch 206, carry out envelope detection through detector diode 211 again, again through the low-pass filtering of secondary signal processor, signal is through processing such as amplification and shapings, detect after the envelope of 10 14KHz, the wake-up level of output " 1 ", master controller just can be enabled transmitting path, receiving path and contactless card reading circuit after detecting that effective wake-up level is " 1 ".
Equally, this electronic communication device is except above-mentioned transmitting path, receiving path and wake up path, also comprises power module and contactless card reading circuit, and the principle of work of the two and embodiment mono-are basic identical.Contactless card reading circuit is connected with master controller, and in order to meet the control to power module, structurally, master controller has also increased by two corresponding I/O control ends on prior art basis; Power module comprises the first power supply 212, second source 213, the 3rd power supply 214 and the 4th power supply 215; The first power supply 212 provides working power for master controller and radio-frequency (RF) transceiver; Second source 213 provides working power for contactless card reading circuit; The 3rd power supply 214 provides working power for power amplifier 209; The 4th power supply 215 provides working power for receiving path; The Push And Release of I/O control end control second source 213, the 3rd power supply 214 and the 4th power supply 215 of master controller.
In prior art, be applicable to provincial standard as wide target electronic tag, although possessed the feature that depth of modulation is large, but meanwhile, because adopting medium vibration, it produces 5.8GHz signal as transmiting signal source, also brought otherwise problem: (1), because the medium volume of this electronic tag is larger, can not realize the little slimming of product; (2) medium frequency stability is poor, and frequency deviation is serious, when production, need to adjust correction frequency, debug difficulties, and difference variation is bad control also.Consistance, stability when these all have a strong impact on electronic tag use above, be also unfavorable for large-scale production.Given this, a kind of high depth modulation electronic communication device that the present embodiment can be provided is applied to and meets terrestrial reference as wide target electronic tag, and this electronic tag can complete the ETC transaction under normal wide mark.The electronic communication device that this embodiment is provided is applied to the electronic tag that meets terrestrial reference and has following beneficial effect: adopt master controller I/O modulation signal transmitting terminal transmitting modulation signal to replace original employing medium vibration to produce modulation signal, the signal producing without medium vibration is as modulating signal source, master controller I/O modulation signal transmitting terminal is transmitted into modulation signal the modulation signal controlled end of transmitting path, realizes high modulation coefficient ASK transmitting in transmitting path.Owing to having saved medium, make more miniaturization of electronic tag; Meanwhile, master controller I/O modulation signal transmitting terminal transmitting modulation signal, relative medium vibration transmitting modulating signal source, has avoided because dielectric stability is poor the generation of the serious situation of frequency deviation.
Embodiment tri-
The present embodiment provides a kind of electronic charging system without parking, comprises roadside unit and electronic tag, and electronic tag uses the electronic communication device as described in embodiment mono-or embodiment bis-to communicate by letter with roadside unit.Intercom mutually with roadside unit when electronic tag uses the electronic communication device of embodiment mono-, make this vehicle can complete normal GB ETC and conclude the business, also can complete normal provincial standard and conclude the business as wide mark ETC; Have compared with the electronic tag of high depth modulation on the windshield at vehicle when embodiment bis-is installed, the intercommunication of roadside unit and electronic tag, makes this vehicle complete normal provincial standard and concludes the business as wide mark ETC.
Also it should be noted that, electronic communication device described in the present invention not only can apply in electronic tag, to complete the ETC transaction that meets various criterion, can also be used on the electronic communication equipments such as car-mounted terminal, front dress electronic tag (front dress OBU), roadside unit (RSU), thereby make these products all can be applicable to different standards, there is good compatibility.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace.
Claims (13)
1. an electronic communication device, comprises dual-mode antenna (101) and master controller, also comprises:
Transmitting path, the first receiving path, the second receiving path, first are waken path and second up and are waken path up;
Described transmitting path, the first receiving path, the second receiving path, first are waken path and second up and are waken path up and be parallel between described dual-mode antenna (101) and master controller;
Described the first receiving path, the second receiving path, first are waken path and second up and are waken path up and be respectively equipped with switching command receiving end, be connected with the switching command output end signal of described master controller, according to the switching command of described master controller output, realize described the first receiving path, the second receiving path, first and wake path and second up and wake up the gating of path.
2. electronic communication device as claimed in claim 1, it is characterized in that, described transmitting path is provided with modulation signal controlled end, be connected with the I/O modulation signal transmitting terminal signal of described master controller, the modulation signal controlled end of described transmitting path receives the modulation signal of described I/O modulation signal transmitting terminal transmitting, and completes in described transmitting path the modulation that transmits.
3. electronic communication device as claimed in claim 2, is characterized in that, described transmitting path comprises radio-frequency (RF) transceiver, the tenth microwave switch (111), for regulating power regulator and first microwave switch (102) of described radio-frequency (RF) transceiver emissive power; The data transmission terminal of described power regulator is connected with described master controller signal, and input end is connected with the output terminal of described the tenth microwave switch (111), and output terminal is connected with the input end of described the first microwave switch (102); Described the tenth input end of microwave switch (111) and the transmitting output pin of described radio-frequency (RF) transceiver are connected; The signal access pin of described radio-frequency (RF) transceiver is connected with described master controller signal; The output terminal of described the first microwave switch (102) is connected with described dual-mode antenna (101); The two has modulation signal controlled end described the tenth microwave switch (111) and the first microwave switch (102), and the modulation signal of the I/O modulation signal transmitting terminal output of described master controller is transmitted into respectively the modulation signal controlled end of the tenth microwave switch (111) and the first microwave switch (102).
4. electronic communication device as claimed in claim 3, it is characterized in that, described power regulator comprises power amplifier (112) and digital regulation resistance, the input end of described power amplifier (112) is connected with the output terminal of described the tenth microwave switch (111), and output terminal is connected with the first microwave switch (102) input end; The data transmission terminal of described digital regulation resistance is connected with described master controller, and output terminal and described power amplifier (112) input end join.
5. electronic communication device as claimed in claim 4, it is characterized in that, described transmitting path also comprises the 9th microwave switch (110) and LC lattice network (119), and described LC lattice network (119) is connected with the input end of described the 9th microwave switch (110); The output terminal of described the 9th microwave switch (110) is connected with the input end of described power amplifier (112).
6. as the electronic communication device as described in arbitrary in claim 1-5, it is characterized in that, described the first receiving path, the second receiving path, first are waken path and second up and are waken that path is followed successively by GB receiving path, terrestrial reference receiving path, GB wakes path up and terrestrial reference wakes path up up.
7. as the electronic communication device as described in arbitrary in claim 1-5, it is characterized in that, described the first receiving path comprises the second microwave switch (103) and radio-frequency (RF) transceiver, the input end of described the second microwave switch (103) is connected with described dual-mode antenna (101), and output terminal receives input pin with first of described radio-frequency (RF) transceiver and is connected; Described radio-frequency (RF) transceiver signal access pin is connected with described master controller signal; The switching command receiving end of described the second microwave switch (103) is connected with master controller switching command output end signal.
8. as the electronic communication device as described in arbitrary in claim 1-5, it is characterized in that, described the second receiving path comprises the 3rd microwave switch (104), the 5th microwave switch (106), low noise amplifier (113), the 7th microwave switch (108), detector diode (114) and the first signal processor that connect successively; Described the 3rd microwave switch (104) is also connected with described dual-mode antenna (101); Described first signal processor is also connected with described master controller signal; Described the 3rd microwave switch (104), the 5th microwave switch (106) and the 7th microwave switch (108) three's switching command receiving end is connected with master controller switching command output end signal.
9. as the electronic communication device as described in arbitrary in claim 1-5, it is characterized in that, described first wakes path up comprises the 3rd microwave switch (104), the 4th microwave switch (105) and radio-frequency (RF) transceiver, the input end of described the 3rd microwave switch (104) is connected with described dual-mode antenna (101), and output terminal is connected with the input end of described the 4th microwave switch (105); The output terminal of described the 4th microwave switch (105) receives input pin with second of described radio-frequency (RF) transceiver and is connected; Described radio-frequency (RF) transceiver signal access pin is connected with described master controller signal; The two switching command receiving end of described the 3rd microwave switch (104) and the 4th microwave switch (105) is connected with master controller switching command output end signal.
10. as the electronic communication device as described in arbitrary in claim 1-5, it is characterized in that, described second wakes path up comprises the 3rd microwave switch (104), the 6th microwave switch (107), the 8th microwave switch (109), detector diode (114) and secondary signal processor, described dual-mode antenna (101), the 3rd microwave switch (104), the 6th microwave switch (107), the 8th microwave switch (109), detector diode (114) are connected successively with secondary signal processor, and described secondary signal processor is also connected with described master controller signal; Described the 3rd microwave switch (104), the 6th microwave switch (107) and the 8th microwave switch (109) three's switching command receiving end is connected with master controller switching command output end signal.
11. electronic communication devices as described in claim 4 or 5, is characterized in that, also comprise power module and contactless card reading circuit; Described contactless card reading circuit is connected with described master controller; Described power module comprises the first power supply (115), second source (116), the 3rd power supply (117) and the 4th power supply (118); Described the first power supply (115) provides working power for described master controller and radio-frequency (RF) transceiver; Described second source (116) provides working power for described contactless card reading circuit; Described the 3rd power supply (117) provides working power for described power amplifier (112); Described the 4th power supply (118) provides working power for described the first receiving path and the second receiving path; The Push And Release of second source (116), the 3rd power supply (117) and the 4th power supply (118) described in the I/O control end control of described master controller.
12. 1 kinds of electronic tags, is characterized in that, comprise the electronic communication device as described in claim 1-11.
13. 1 kinds of electronic charging system without parking, comprise roadside unit, it is characterized in that, also comprise electronic tag as claimed in claim 12, communicate by letter, to carry out electric non-stop toll transaction with described roadside unit.
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| CN201310142728.3A CN103778673B (en) | 2013-04-23 | 2013-04-23 | Electronic communication device, electronic tag and electronic charging system without parking |
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| CN201310142728.3A CN103778673B (en) | 2013-04-23 | 2013-04-23 | Electronic communication device, electronic tag and electronic charging system without parking |
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| CN116112042A (en) * | 2023-02-08 | 2023-05-12 | 上海坤锐电子科技有限公司 | Demodulation circuit, electronic tag and electronic tag system |
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| CN103778673B (en) | 2016-04-27 |
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