CN106324352A - Standing-wave ratio detection circuit of multi-frequency medium wave transmitter - Google Patents
Standing-wave ratio detection circuit of multi-frequency medium wave transmitter Download PDFInfo
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Abstract
The present invention provides a standing-wave ratio detection circuit of a multi-frequency medium wave transmitter. The standing-wave ratio detection circuit comprises a switching control module, an antenna standing-wave ratio detection module and a network standing-wave ratio detection module, wherein the switching control module is used to generate the control information according to a current frequency, the antenna standing-wave ratio detection module is used to carry out the amplitude adjustment and the tuning and phase adjustment on the received sampling current and voltage according to the control information and generate an antenna standing-wave ratio signal according to the adjusted sampling current and voltage, and the network standing-wave ratio detection module is used to carry out the amplitude adjustment and the tuning and phase adjustment on the received sampling current and voltage according to the control information and generate a network standing-wave ratio signal according to the adjusted sampling current and voltage. A controller determines the working state of the transmitter according to the standing-wave ratio signals, thereby realizing that the standing-wave ratio detection can be finished automatically without needing any additional operation after the frequency of the transmitter changes, at the same time, guaranteeing that the transmitter is switched to a new frequency rapidly and works normally.
Description
Technical Field
The invention relates to a transmitter technology, in particular to a standing-wave ratio detection circuit of a multi-frequency medium-wave transmitter.
Background
The standing-wave ratio is one of important parameters for measuring whether the transmitter works normally, when the value of the standing-wave ratio signal is close to zero, the transmitter works normally, and when the standing-wave ratio signal is an alternating current signal with a certain amplitude, the transmitter is abnormal, and the processing of reducing power or stopping the transmitter is needed to protect the transmitter. Generally, a transmitter is provided with a corresponding standing-wave ratio detecting device for detecting a standing-wave ratio and sending a detected result to a controller, so that the controller performs corresponding processing according to the standing-wave ratio detecting result.
In the prior art, a radio frequency power sampling board and an output monitoring board are generally used in a transmitter to detect an antenna standing wave ratio and a network standing wave ratio, respectively, where the antenna standing wave ratio refers to the standing wave ratio of an antenna communicating with the transmitter, and the network standing wave ratio refers to the standing wave ratio of an internal network of the transmitter.
However, in the prior art, the rf power sampling board and the output monitoring board are used to detect the antenna standing-wave ratio and the network standing-wave ratio, and only the standing-wave ratio at one frequency can be detected, for the multi-frequency medium-wave transmitter, if the rf power sampling board and the output monitoring board are used to detect the standing-wave ratio, as long as the frequency changes, the components of each part of the standing-wave ratio circuit on the rf power sampling board and the output monitoring board need to be manually adjusted to adapt to the new frequency, so that the transmitter cannot be guaranteed to be quickly switched to the new frequency, and the multi-frequency medium-wave transmitter cannot normally operate.
Disclosure of Invention
The invention provides a standing-wave ratio detection circuit of a multi-frequency medium-wave transmitter, which is used for solving the problem that the transmitter cannot normally work due to the fact that components of a standing-wave ratio circuit need to be replaced when the frequency of the transmitter changes in the prior art.
The invention provides a standing-wave ratio detection circuit of a multi-frequency medium-wave transmitter, which comprises: the system comprises a switching control module, an antenna standing-wave ratio detection module and a network standing-wave ratio detection module; wherein,
the antenna standing wave ratio detection module comprises: the antenna comprises a switch unit, an antenna current tuning and phase adjusting unit, an antenna current amplitude adjusting unit, an antenna voltage tuning and phase adjusting unit, an antenna voltage amplitude adjusting unit and an antenna standing wave ratio detecting unit, wherein the switch unit is connected with the antenna current tuning and phase adjusting unit and the antenna voltage tuning and phase adjusting unit;
the network standing wave ratio detection module comprises: the network voltage amplitude adjusting unit is connected with the network voltage tuning and phase adjusting unit, the network current amplitude adjusting unit is connected with the network current tuning and phase adjusting unit, and the network standing wave ratio detecting unit is connected with the network current amplitude adjusting unit and the network voltage tuning and phase adjusting unit;
the switching control module is respectively connected with the switch unit, the antenna current amplitude adjusting unit, the network voltage tuning and phase adjusting unit and the network current tuning and phase adjusting unit;
the switching control module is used for acquiring the current frequency of the transmitter;
the switch unit is used for receiving a first control signal sent by the switching control module when the frequency of a transmitter changes, sending an antenna sampling current to the antenna current tuning and phase adjusting unit corresponding to the current frequency according to the first control signal, and sending an antenna sampling voltage to the antenna voltage tuning and phase adjusting unit corresponding to the current frequency;
the antenna current amplitude adjusting unit is used for receiving a second control signal sent by the switching control module when the frequency of the transmitter changes, receiving the antenna current after tuning and phase adjustment sent by the antenna current tuning and phase adjusting unit, and performing amplitude adjustment on the antenna current after tuning and phase adjustment according to the second control signal to obtain the antenna current to be measured;
the antenna voltage amplitude adjusting unit is used for receiving the tuned and phase-adjusted antenna voltage sent by the antenna voltage tuning and phase adjusting unit, and carrying out amplitude adjustment on the tuned and phase-adjusted antenna voltage to obtain the antenna voltage to be measured;
the antenna standing wave ratio detection unit is used for receiving the antenna current to be detected sent by the antenna current amplitude adjustment unit, receiving the antenna voltage to be detected sent by the antenna voltage amplitude adjustment unit and detecting the antenna standing wave ratio according to the antenna current to be detected and the antenna voltage to be detected;
the network voltage amplitude adjusting unit is used for acquiring network sampling voltage, receiving a third control signal sent by the switching control module when the frequency of the transmitter changes, and carrying out amplitude adjustment on the network sampling voltage according to the third control signal to acquire network voltage after amplitude adjustment;
the network voltage tuning and phase adjusting unit is used for receiving a fourth control signal sent by the switching control module when the frequency of a transmitter changes, receiving the network voltage after amplitude adjustment sent by the network voltage amplitude adjusting unit, and tuning and phase adjusting the network voltage after amplitude adjustment according to the fourth control signal to obtain the network voltage to be measured;
the network current tuning and phase adjusting unit is used for acquiring network sampling current, receiving a fifth control signal sent by the switching control module when the frequency of the transmitter changes, tuning and phase adjusting the network sampling current according to the fifth control signal, and acquiring the tuned and phase-adjusted network current;
the network current amplitude adjusting unit is used for receiving the network current after the tuning and phase adjustment sent by the network current tuning and phase adjusting unit, and carrying out amplitude adjustment on the network current after the tuning and phase adjustment to obtain the network current to be measured;
the network standing wave ratio detection unit is used for receiving the network voltage to be detected sent by the network voltage tuning and phase adjusting unit, receiving the network current to be detected sent by the network current amplitude adjusting unit, and detecting the network standing wave ratio according to the network voltage to be detected and the network current to be detected.
In the standing-wave ratio detection circuit of the multi-frequency medium-wave transmitter provided by the invention, a switching control module acquires the current frequency of the transmitter, generates a control signal according to the current frequency and sends the control signal to an antenna standing-wave ratio detection module and a network standing-wave ratio detection module, the antenna standing-wave ratio detection module performs amplitude adjustment, tuning and phase adjustment on the received antenna sampling current and antenna sampling voltage according to the control signal and generates an antenna standing-wave ratio signal according to the adjusted current and voltage, the network standing-wave ratio detection module performs amplitude adjustment, tuning and phase adjustment on the received network sampling current and network voltage according to the control signal and generates a network standing-wave ratio signal according to the adjusted current and voltage, and the antenna standing-wave ratio signal and the network standing-wave ratio signal are sent to a controller, so that the controller can quickly determine the working state of the transmitter according to the antenna standing-wave ratio signal and the network standing-wave ratio signal, the standing-wave ratio detection can be automatically completed without any additional operation after the frequency of the transmitter is changed, and meanwhile, the transmitter is ensured to be quickly switched to a new frequency and normally work.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a module of a standing-wave ratio detection circuit of a multi-frequency medium-wave transmitter according to an embodiment of the present invention;
fig. 2 is a circuit diagram of an internal circuit of a switching control module of a standing-wave ratio detection circuit of a multi-frequency medium-wave transmitter according to an embodiment of the present invention;
fig. 3 is a circuit diagram of an internal circuit of an adjusting unit of an antenna standing-wave ratio detecting module of a standing-wave ratio detecting circuit of a multi-frequency moderate-wave transmitter according to an embodiment of the present invention;
fig. 4 is a circuit diagram of the internal circuit of the standing-wave ratio detection unit of the standing-wave ratio detection module of the antenna standing-wave ratio detection circuit of the multi-frequency moderate-wave transmitter according to the embodiment of the present invention;
fig. 5 is a circuit diagram of an internal circuit of a phase detection unit of an antenna standing-wave ratio detection module of a standing-wave ratio detection circuit of a multi-frequency medium-wave transmitter according to an embodiment of the present invention;
fig. 6 is a circuit diagram of an internal circuit of a network standing-wave ratio detection module of a standing-wave ratio detection circuit of a multi-frequency moderate-wave transmitter according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a module of a standing-wave ratio detection circuit of a multi-frequency moderate-wave transmitter according to an embodiment of the present invention, and as shown in fig. 1, the standing-wave ratio detection circuit 100 of the multi-frequency moderate-wave transmitter includes: a switching control module 110, an antenna standing wave ratio detection module 120 and a network standing wave ratio detection module 130.
The antenna standing wave ratio detection module 120 includes: the antenna comprises a switch unit 121, an antenna current tuning and phase adjusting unit 122, an antenna current amplitude adjusting unit 123, an antenna voltage tuning and phase adjusting unit 124, an antenna voltage amplitude adjusting unit 125 and an antenna standing wave ratio detecting unit 126, wherein the switch unit 121 is connected with the antenna current tuning and phase adjusting unit 122 and the antenna voltage tuning and phase adjusting unit 124, the antenna current amplitude adjusting unit 123 is connected with the antenna current tuning and phase adjusting unit 122, the antenna voltage amplitude adjusting unit 125 is connected with the antenna voltage tuning and phase adjusting unit 124, and the antenna standing wave ratio detecting unit 126 is connected with the antenna current amplitude adjusting unit 123 and the antenna voltage amplitude adjusting unit 125.
The network standing wave ratio detection module 130 includes: a network voltage amplitude adjusting unit 131, a network voltage tuning and phase adjusting unit 132, a network current tuning and phase adjusting unit 133, a network current amplitude adjusting unit 134, and a network standing wave ratio detecting unit 135, wherein the network voltage amplitude adjusting unit 131 is connected with the network voltage tuning and phase adjusting unit 132, the network current amplitude adjusting unit 134 is connected with the network current tuning and phase adjusting unit 133, and the network standing wave ratio detecting unit 135 is connected with the network current amplitude adjusting unit 134 and the network voltage tuning and phase adjusting unit 132.
The switching control module 110 is connected to the switching unit 121, the antenna current amplitude adjusting unit 123, the network voltage amplitude adjusting unit 131, the network voltage tuning and phase adjusting unit 132, and the network current tuning and phase adjusting unit 133, respectively.
And a switching control module 110, configured to obtain a current frequency of the transmitter.
The switch unit 121 is configured to receive a first control signal sent by the switching control module 110 when the transmitter frequency changes, send the antenna sampling current to the antenna current tuning and phase adjusting unit 122 corresponding to the current frequency according to the first control signal, and send the antenna sampling voltage to the antenna voltage tuning and phase adjusting unit 124 corresponding to the current frequency. That is, after receiving the first control signal, the switch unit 121 sends the current antenna sampling current and the current antenna sampling voltage to the corresponding units for processing.
And an antenna current amplitude adjusting unit 123, configured to receive a second control signal sent by the switching control module 110 when the frequency of the transmitter changes, and receive the tuned and phase-adjusted antenna current sent by the antenna current tuning and phase adjusting unit 122, and perform amplitude adjustment on the tuned and phase-adjusted antenna current according to the second control signal, so as to obtain an antenna current to be measured.
And an antenna voltage amplitude adjusting unit 125, configured to receive the tuned and phase-adjusted antenna voltage sent by the antenna voltage tuning and phase adjusting unit 124, and perform amplitude adjustment on the tuned and phase-adjusted antenna voltage to obtain an antenna voltage to be measured.
The antenna standing wave ratio detecting unit 126 is configured to receive the antenna current to be detected sent by the antenna current amplitude adjusting unit 123, receive the antenna voltage to be detected sent by the antenna voltage amplitude adjusting unit 125, and detect the antenna standing wave ratio according to the antenna current to be detected and the antenna voltage to be detected.
The network voltage amplitude adjusting unit 131 is configured to obtain a network sampling voltage, receive a third control signal sent by the switching control module 110 when the transmitter frequency changes, perform amplitude adjustment on the network sampling voltage according to the third control signal, and obtain an amplitude-adjusted network voltage.
The network voltage tuning and phase adjusting unit 132 is configured to receive a fourth control signal sent by the switching control module 110 when the transmitter frequency changes, receive the network voltage after amplitude adjustment sent by the network voltage amplitude adjusting unit 131, tune and adjust the phase of the network voltage after amplitude adjustment according to the fourth control signal, and obtain the network voltage to be measured.
The network current tuning and phase adjusting unit 133 is configured to obtain a network sampling current, receive a fifth control signal sent by the switching control module 110 when the frequency of the transmitter changes, tune and adjust the phase of the network sampling current according to the fifth control signal, and obtain a tuned and phase-adjusted network current.
A network current amplitude adjusting unit 134, configured to receive the network current after tuning and phase adjustment sent by the network current tuning and phase adjusting unit 133, and perform amplitude adjustment on the network current after tuning and phase adjustment to obtain a network current to be measured.
The network standing wave ratio detecting unit 135 is configured to receive the network voltage to be detected sent by the network voltage tuning and phase adjusting unit 132, receive the network current to be detected sent by the network current amplitude adjusting unit 134, and detect the network standing wave ratio according to the network voltage to be detected and the network current to be detected.
Further, as shown in fig. 1, the antenna standing-wave ratio detection module 120 further includes a phase detection unit 127, where the phase detection unit 127 is connected to the antenna current amplitude adjustment unit 123 and the antenna voltage amplitude adjustment unit 125, and is configured to receive the antenna current to be detected sent by the antenna current amplitude adjustment unit 123, receive the antenna voltage to be detected sent by the antenna voltage amplitude adjustment unit 125, and obtain a phase signal according to the antenna current to be detected and the antenna voltage to be detected.
Specifically, the switching control module 110 is configured to obtain a current frequency of the transmitter, and when the frequency of the transmitter changes, the transmitter sends the current frequency to the switching control module 110 through the controller, where the current frequency may be represented as a three-bit frequency signal. After acquiring the current frequency, the switching control module 110 processes the current frequency inside the module to generate a corresponding control signal, and sends the control signal to the antenna standing-wave ratio detection module 120 and the network standing-wave ratio detection module 130, so that the antenna standing-wave ratio detection module 120 and the network standing-wave ratio detection module 130 generate an antenna standing-wave ratio signal and a network standing-wave ratio signal according to the control signal.
Specifically, the antenna standing-wave ratio detecting module 120 is configured to perform amplitude adjustment, tuning and phase adjustment on the received antenna sampling current and the received antenna sampling voltage according to the control signal sent by the switching control module 110, generate an antenna standing-wave ratio signal by using the adjusted voltage and current, and send the standing-wave ratio signal to the controller, where the controller determines the current working state of the transmitter according to the standing-wave ratio signal. When the transmitter normally works, the antenna sampling current and the antenna sampling voltage generate signals with equal amplitude and same phase after amplitude adjustment, tuning and phase adjustment, at this time, the antenna standing-wave ratio detection unit 126 in the antenna standing-wave ratio detection module 120 outputs a standing-wave ratio signal close to zero, and when the controller receives the standing-wave ratio signal, the transmitter can be determined to be in a normal working state; when the transmitter is abnormal, the amplitude-adjusted, tuned, and phase-adjusted antenna sampling current and antenna sampling voltage cannot reach equal amplitude and same phase, at this time, the antenna standing-wave ratio detecting unit 126 in the antenna standing-wave ratio detecting module 120 outputs a standing-wave ratio signal with a certain amplitude, and when the controller receives the standing-wave ratio signal, it can determine that the transmitter is abnormal, and further take measures to protect the transmitter.
The overall processing procedure of the network standing wave ratio detection module 130 is the same as that of the antenna standing wave ratio detection module 120, and is not described herein again.
In the embodiment, a switching control module in a standing-wave ratio detection circuit of a multi-frequency medium-wave transmitter acquires the current frequency of the transmitter, generates a control signal according to the current frequency, and transmits the control signal to an antenna standing-wave ratio detection module and a network standing-wave ratio detection module, the antenna standing-wave ratio detection module performs amplitude adjustment, tuning and phase adjustment on received sampling current and voltage according to the control signal, and generates an antenna standing-wave ratio signal according to the adjusted current and voltage, the network standing-wave ratio detection module performs amplitude adjustment, tuning and phase adjustment on the received sampling current and voltage according to the control signal, and generates a network standing-wave ratio signal according to the adjusted current and voltage, and the antenna standing-wave ratio signal and the network standing-wave ratio signal are transmitted to a controller, so that the controller can quickly determine the working state of the transmitter according to the antenna standing-wave ratio signal and the network standing-wave ratio signal, the standing-wave ratio detection can be automatically completed without any additional operation after the frequency of the transmitter is changed, and meanwhile, the transmitter is ensured to be quickly switched to a new frequency and normally work.
Fig. 2 is a circuit diagram of an internal circuit of a switching control module of a standing-wave ratio detection circuit of a multi-frequency medium-wave transmitter according to an embodiment of the present invention, and as shown in fig. 2, the switching control module 110 includes a first logic controller and a second logic controller.
And the first logic controller is used for generating the first control signal and the second control signal according to the current frequency when the frequency of the transmitter changes.
A second logic controller for generating the third control signal, the fourth control signal, and the fifth control signal according to a current frequency when a transmitter frequency changes.
By using the first logic controller control signals for the antenna sample current and the antenna sample voltage may be generated, and by using the second logic controller control signals for the network sample current and the network sample voltage may be generated.
Alternatively, as shown in FIG. 2, the first logic controller U18 and the second logic controller U17 are programmable logic controllers PAL22V 10.
Optionally, as shown in fig. 2, the switching control module 110 further includes a photocoupler U23, the photocoupler U23 is TLP521-4, and the reverse driver U19, the reverse driver U20 and the reverse driver U21, and the reverse driver U19, the reverse driver U20 and the reverse driver U21 are ULN 2803.
Specifically, as shown in fig. 2, the switching control module 110 receives a three-bit frequency signal through the interface J14C, the interface J14E, and the interface J14G, and the frequency signal is filtered by a capacitor and a resistor and then input to the photocoupler U23 to completely isolate the input from the output, thereby reducing the interference of the signal. The signal output by the photoelectric coupler U23 is filtered by a capacitor and then is simultaneously sent to the first logic controller U18 and the second logic controller U17.
The control signal output by the first logic controller U18 is driven by the inverse driver U21 and then sent to the antenna standing wave ratio detection module 120. As shown in fig. 2, among the control signals output by the first logic controller U18, a first control signal is sent from K6-K8 to the switch unit 121 in the antenna standing wave ratio detection module 120 to control the pull-in and suspension of different relays, so that the antenna sampling current and the antenna sampling voltage can enter the tuning and phase detection unit of the current frequency; the second control signal is sent from Q6-Q8 to the antenna current amplitude adjustment unit 123 in the antenna standing-wave ratio detection module 120, so as to control the fet to perform amplitude adjustment on the antenna sampling current.
The control signal output by the second logic controller U17 is driven by the inverse driver U19 and the inverse driver U20 and then sent to the network standing wave ratio detection module 130. As shown in fig. 2, the third control signal output by the second logic controller U17 after being driven by the inverse driver U20 is sent to the network voltage amplitude adjustment unit 131 in the network standing wave ratio detection module 130 by Q1 and Q2, and the amplitude of the network sampling voltage is adjusted by controlling the fet; a fifth control signal is sent to the network current tuning and phase adjusting unit 133 in the network standing wave ratio detection module 130 by the Q3-Q5, and the tuning and phase adjusting is performed on the network sampling current by the control fet; the fourth control signal output after being driven by the inverse driver U19 is sent to the network voltage tuning and phase adjusting unit 132 in the network standing wave ratio detecting module 130 by the K1-K5 to control the pull-in and suspension of different relays, so as to tune and phase adjust the network sampling voltage.
Fig. 3 is a circuit diagram of an internal adjusting unit of a standing-wave ratio detecting module of a standing-wave ratio detecting circuit of a multi-frequency moderate-wave transmitter according to an embodiment of the present invention, fig. 4 is a circuit diagram of an internal standing-wave ratio detecting unit of a standing-wave ratio detecting module of a standing-wave ratio detecting circuit of a multi-frequency moderate-wave transmitter according to an embodiment of the present invention, and fig. 5 is a circuit diagram of an internal phase detecting unit of an antenna standing-wave ratio detecting module of a standing-wave ratio detecting circuit of a multi-frequency moderate-wave transmitter according to an embodiment of the present invention.
As shown in fig. 3, the switching unit 121 includes: a plurality of relays, wherein each relay corresponds to a transmitter frequency.
The switch unit 121 is configured to determine a current frequency of the transmitter according to the first control signal, and turn on a corresponding relay of the plurality of relays according to the current frequency of the transmitter.
Specifically, as shown in fig. 3, the antenna standing-wave ratio detection module 120 receives an antenna sampling current through an interface J31, receives an antenna sampling voltage through an interface J32, the antenna sampling current and the antenna sampling voltage enter the switch unit 121, the switch unit receives a first control signal sent by the switching control module 110 through the relays K6-K8, the antenna sampling current is switched to the antenna current tuning and phase adjusting unit 122 corresponding to the current frequency to perform tuning and phase adjustment under the action of the first control signal, and the antenna sampling voltage is switched to the antenna voltage tuning and phase adjusting unit 124 corresponding to the current frequency to perform tuning and phase adjustment. On the one hand, the tuned and phase-adjusted antenna sampling current enters the antenna current amplitude adjusting unit 123, under the action of the second control signal received by the antenna current amplitude adjusting unit 123 from the switching control module 110, one of the fets Q10-Q12 is turned on, the antenna sampling current passes through the turned-on fet and is amplitude-adjusted by the potentiometer corresponding to the fet, and the amplitude-adjusted antenna sampling current passes through the test point TP26 and enters the antenna standing wave ratio detecting unit 126 shown in fig. 4 and the phase detecting unit 127 shown in fig. 5. On the other hand, the tuned and phase-adjusted antenna sampling voltage enters the antenna voltage amplitude adjustment unit 125, the antenna voltage amplitude adjustment unit 125 is specifically a potentiometer R95, the tuned and phase-adjusted antenna sampling voltage is amplitude-adjusted by the potentiometer R95, and the amplitude-adjusted antenna sampling voltage enters the antenna standing wave ratio detection unit 126 shown in fig. 4 and the phase detection unit 127 shown in fig. 5 through the test point TP 30.
Through the amplitude adjustment, the tuning and the phase adjustment, when the transmitter normally works, current and voltage signals with equal amplitude and same phase are generated at the test point TP26 and the test point TP 30; when the transmitter is abnormal, the current and voltage signals obtained at the test point TP26 and the test point TP30 cannot be in equal amplitude and phase.
As shown in fig. 4, the antenna standing wave ratio detection unit 126 includes: and an operational amplifier U29, connected to the antenna current amplitude adjusting unit 123 and the antenna voltage amplitude adjusting unit 125, for receiving the antenna current to be tested sent by the antenna current amplitude adjusting unit 123 and receiving the antenna voltage to be tested sent by the antenna voltage amplitude adjusting unit 125.
Specifically, as shown in fig. 4, the antenna standing-wave ratio detecting unit 126 receives the current and voltage subjected to amplitude adjustment, tuning and phase adjustment through the test point TP26 and the test point TP30, the current and voltage enter the operational amplifier U29 after being resistance-filtered, the operational amplifier U29 performs operation processing on the input signal and outputs a high-frequency alternating current signal, the signal is detected through the diode CR36 and is filtered through the capacitor C78 to form an antenna standing-wave ratio signal, and the antenna standing-wave ratio signal is sent to the controller through the interface J33 to be processed, so as to determine the operating state of the transmitter. When the transmitter works normally, a standing-wave ratio signal close to zero is output through the interface J33, and when the controller receives the standing-wave ratio signal, the transmitter can be determined to be in a normal working state; when the transmitter is abnormal, a standing-wave ratio signal with a certain amplitude is output through the interface J33, and after the controller receives the standing-wave ratio signal, the state abnormality of the transmitter can be determined, and measures are taken to protect the transmitter. Further, as shown in fig. 4, the resistor R98 is used as a load for detecting signals, the diode CR30 and the diode CR31 are used for limiting amplitude, the resistor R99 and the resistor R107 are used as a load for antenna standing wave ratio signals to provide sufficient voltage for the post-stage circuit, and the diode CR29 is used for stabilizing the voltage of the antenna standing wave ratio signals.
As shown in fig. 5, the phase detecting unit 127 includes an exclusive or gate U26A and a voltage comparator U28A.
Alternatively, the voltage comparator U28A may be MAX 902.
Specifically, the phase detecting unit 127 receives the amplitude-adjusted, tuned and phase-adjusted current and voltage through the test point TP26 and the test point TP30, the current and voltage are subjected to voltage division and buffering processing, and then enter the xor gate U26A, the xor gate U26A performs xor operation on the current and voltage signals to output an alternating current signal, the alternating current signal is filtered by the resistor R89 and the capacitor C93, and then is compared by the voltage comparator U28A to output a phase signal. When the transmitter normally works, the xor gate U26A outputs a low level signal after performing xor operation on the amplitude-adjusted, tuned, and phase-adjusted current and voltage, the low level signal is measured at the test point TP24, and is processed by the voltage comparator U28A to output a high level signal, and the high level signal is transmitted to the controller through the interface J12g to inform the controller that the phases of the antenna voltage and the antenna current are normal. When the transmitter is abnormal, the xor gate U26A outputs a detection signal with a certain amplitude, the level measured at the test point TP24 is higher than the phase detection threshold, and after the detection signal is processed by the voltage comparator U28A, the xor gate U26 outputs a low-level phase error signal, which is sent to the controller through the interface J12g for processing.
It should be noted that, when the antenna standing wave ratio signal output by the antenna standing wave ratio detecting unit 126 is not enough to obviously determine whether the transmitter is working normally, the phase signal output by the phase detecting unit 127 may be used to determine whether the transmitter is working normally by the phase signal being at a high level or a low level.
Fig. 6 is a circuit diagram of an internal circuit of a network standing-wave ratio detection module of a standing-wave ratio detection circuit of a multi-frequency moderate-wave transmitter according to an embodiment of the present invention, and as shown in fig. 6, a network standing-wave ratio detection unit 135 in a network standing-wave ratio detection module 130 includes: transformer T1, first diode CR1 and second diode CR3, first diode CR1 and second diode CR3 are all connected to transformer T1, and first diode CR1 and second diode CR3 are connected in parallel.
The transformer T1 is connected to the network current amplitude adjustment unit 134 and the network voltage tuning and phase adjustment unit 132, and is configured to receive the network voltage to be tested sent by the network voltage tuning and phase adjustment unit 132 and receive the network current to be tested sent by the network current amplitude adjustment unit 134.
Specifically, the network standing wave ratio detection module 130 receives the network sampled voltage through interface J19 and the network sampled current through interface J24.
On one hand, the network sampling voltage enters the network voltage amplitude adjusting unit 131, the amplitude of the network sampling voltage is adjusted through the adjustable capacitor C6, meanwhile, the network voltage amplitude adjustment unit 131 receives the third control signals Q1 and Q2 transmitted by the switching control module 110 through the field effect transistors Q1 and Q2, under the action of third control signals Q1 and Q2, the network sampling voltage is connected to the corresponding capacitor for amplitude adjustment, the network sampling voltage after the amplitude adjustment is driven by a driver U2 and then enters a network voltage tuning and phase adjusting unit 132, the network voltage tuning and phase adjusting unit 132 receives fourth control signals K1-K5 sent by the switching control module 110 through relays K1-K5, under the action of the fourth control signal K1-K5, the network sampling voltage is connected to the corresponding inductor and resistor, and tuning and phase adjustment are carried out. The tuned and phase adjusted network sampled voltage is sent to pin 7 of transformer T1.
In another aspect, the network sampled current enters the network current tuning and phase adjusting unit 133, the network current tuning and phase adjusting unit 133 receives the fifth control signals Q3-Q5 sent by the switching control module 110 through the fets Q3-Q5, switches the network sampled current to the corresponding inductor and resistor under the action of the fifth control signals Q3-Q5, performs tuning and phase adjustment, and sends the network sampled current subjected to the tuning and phase adjustment to the 2-pin of the transformer T1 after the amplitude adjustment is performed through the adjustable capacitor C5 in the network current amplitude adjusting unit 134.
After the amplitude adjustment, the tuning and the phase adjustment, the network sampling voltage and the network sampling current are sent to pins 2 and 7 of a transformer T1 of the network standing wave ratio detection unit 135, voltage and current comparison is performed through a primary side of a transformer T1, an alternating current signal is output from a secondary side of the transformer T1, the signal is subjected to full-wave rectification through a first diode CR1 and a second diode CR3, and then filtered through a capacitor C8 to form a network standing wave ratio signal, and the network standing wave ratio signal is sent to the controller through an interface J26. When the transmitter works normally, a standing-wave ratio signal close to zero is output through the interface J26, and when the controller receives the standing-wave ratio signal, the transmitter can be determined to be in a normal working state; when the transmitter is abnormal, a standing-wave ratio signal with a certain amplitude is output through the interface J26, and after the controller receives the standing-wave ratio signal, the state abnormality of the transmitter can be determined, and measures are taken to protect the transmitter.
The standing-wave ratio detection circuit of the multi-frequency medium-wave transmitter provided by the invention uses the switching control module to generate corresponding control signals according to the current frequency of the transmitter, and respectively sends the control signals to the antenna standing-wave ratio detection module and the network standing-wave ratio detection module. The antenna standing-wave ratio detection module performs amplitude adjustment, tuning and phase adjustment on the received antenna sampling current and antenna sampling voltage according to the control signal, generates an antenna standing-wave ratio signal according to the antenna sampling current and the antenna sampling voltage after the amplitude adjustment, the tuning and the phase adjustment, and sends the antenna standing-wave ratio signal to the controller, so that the controller determines the working state of the transmitter according to the antenna standing-wave ratio signal; the network standing wave ratio detection module carries out amplitude adjustment, tuning and phase adjustment on the received network sampling current and network sampling voltage according to the control signal, generates a network standing wave ratio signal according to the network sampling current and the network sampling voltage after the amplitude adjustment, the tuning and the phase adjustment, and sends the network standing wave ratio signal to the controller, so that the controller determines the working state of the transmitter according to the network standing wave ratio signal. Therefore, the standing-wave ratio detection can be automatically completed without any additional operation after the frequency of the transmitter is changed, and meanwhile, the transmitter is ensured to be quickly switched to a new frequency and normally work. When the standing-wave ratio signal of the antenna is not enough to obviously judge whether the transmitter works normally, the phase signal output by the standing-wave ratio detection circuit can be used to judge the working state of the transmitter through the phase signal.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A standing-wave ratio detection circuit for a multi-frequency medium-wave transmitter, comprising: the system comprises a switching control module, an antenna standing-wave ratio detection module and a network standing-wave ratio detection module; wherein,
the antenna standing wave ratio detection module comprises: the antenna comprises a switch unit, an antenna current tuning and phase adjusting unit, an antenna current amplitude adjusting unit, an antenna voltage tuning and phase adjusting unit, an antenna voltage amplitude adjusting unit and an antenna standing wave ratio detecting unit, wherein the switch unit is connected with the antenna current tuning and phase adjusting unit and the antenna voltage tuning and phase adjusting unit;
the network standing wave ratio detection module comprises: the network voltage amplitude adjusting unit is connected with the network voltage tuning and phase adjusting unit, the network current amplitude adjusting unit is connected with the network current tuning and phase adjusting unit, and the network standing wave ratio detecting unit is connected with the network current amplitude adjusting unit and the network voltage tuning and phase adjusting unit;
the switching control module is respectively connected with the switch unit, the antenna current amplitude adjusting unit, the network voltage tuning and phase adjusting unit and the network current tuning and phase adjusting unit;
the switching control module is used for acquiring the current frequency of the transmitter;
the switch unit is used for receiving a first control signal sent by the switching control module when the frequency of a transmitter changes, sending an antenna sampling current to the antenna current tuning and phase adjusting unit corresponding to the current frequency according to the first control signal, and sending an antenna sampling voltage to the antenna voltage tuning and phase adjusting unit corresponding to the current frequency;
the antenna current amplitude adjusting unit is used for receiving a second control signal sent by the switching control module when the frequency of the transmitter changes, receiving the antenna current after tuning and phase adjustment sent by the antenna current tuning and phase adjusting unit, and performing amplitude adjustment on the antenna current after tuning and phase adjustment according to the second control signal to obtain the antenna current to be measured;
the antenna voltage amplitude adjusting unit is used for receiving the tuned and phase-adjusted antenna voltage sent by the antenna voltage tuning and phase adjusting unit, and carrying out amplitude adjustment on the tuned and phase-adjusted antenna voltage to obtain the antenna voltage to be measured;
the antenna standing wave ratio detection unit is used for receiving the antenna current to be detected sent by the antenna current amplitude adjustment unit, receiving the antenna voltage to be detected sent by the antenna voltage amplitude adjustment unit and detecting the antenna standing wave ratio according to the antenna current to be detected and the antenna voltage to be detected;
the network voltage amplitude adjusting unit is used for acquiring network sampling voltage, receiving a third control signal sent by the switching control module when the frequency of the transmitter changes, and carrying out amplitude adjustment on the network sampling voltage according to the third control signal to acquire network voltage after amplitude adjustment;
the network voltage tuning and phase adjusting unit is used for receiving a fourth control signal sent by the switching control module when the frequency of a transmitter changes, receiving the network voltage after amplitude adjustment sent by the network voltage amplitude adjusting unit, and tuning and phase adjusting the network voltage after amplitude adjustment according to the fourth control signal to obtain the network voltage to be measured;
the network current tuning and phase adjusting unit is used for acquiring network sampling current, receiving a fifth control signal sent by the switching control module when the frequency of the transmitter changes, tuning and phase adjusting the network sampling current according to the fifth control signal, and acquiring the tuned and phase-adjusted network current;
the network current amplitude adjusting unit is used for receiving the network current after the tuning and phase adjustment sent by the network current tuning and phase adjusting unit, and carrying out amplitude adjustment on the network current after the tuning and phase adjustment to obtain the network current to be measured;
the network standing wave ratio detection unit is used for receiving the network voltage to be detected sent by the network voltage tuning and phase adjusting unit, receiving the network current to be detected sent by the network current amplitude adjusting unit, and detecting the network standing wave ratio according to the network voltage to be detected and the network current to be detected.
2. The circuit of claim 1, wherein the switching control module comprises a first logic controller and a second logic controller;
the first logic controller is used for generating the first control signal and the second control signal according to the current frequency when the frequency of the transmitter changes;
the second logic controller is configured to generate the third control signal, the fourth control signal, and the fifth control signal according to a current frequency when a transmitter frequency changes.
3. The circuit of claim 1, wherein the switching unit comprises: a plurality of relays, wherein each relay corresponds to a transmitter frequency;
the switch unit is used for determining the current frequency of the transmitter according to the first control signal and opening the corresponding relay in the plurality of relays according to the current frequency of the transmitter.
4. The circuit according to claim 1, wherein the antenna standing wave ratio detecting unit comprises: the operational amplifier is connected with the antenna current amplitude adjusting unit and the antenna voltage amplitude adjusting unit and used for receiving the antenna current to be detected sent by the antenna current amplitude adjusting unit and receiving the antenna voltage to be detected sent by the antenna voltage amplitude adjusting unit.
5. The circuit of claim 1, wherein the network standing wave ratio detection unit comprises: the transformer comprises a transformer, a first diode and a second diode, wherein the first diode and the second diode are both connected with the transformer and are connected in parallel;
the transformer is connected with the network current amplitude adjusting unit and the network voltage tuning and phase adjusting unit and is used for receiving the network voltage to be detected sent by the network voltage tuning and phase adjusting unit and receiving the network current to be detected sent by the network current amplitude adjusting unit.
6. The circuit of claim 1, wherein the antenna standing wave ratio detection module further comprises: a phase detection unit;
the phase detection unit is connected with the antenna current amplitude adjusting unit and the antenna voltage amplitude adjusting unit and used for receiving the antenna current to be detected sent by the antenna current amplitude adjusting unit and receiving the antenna voltage to be detected sent by the antenna voltage amplitude adjusting unit and acquiring a phase signal according to the antenna current to be detected and the antenna voltage to be detected.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107682097A (en) * | 2017-11-14 | 2018-02-09 | 京信通信系统（中国）有限公司 | A kind of apparatus and method of power monitoring |
| CN108900204A (en) * | 2018-06-27 | 2018-11-27 | 郑州菘天电子科技有限公司 | A kind of method of antenna frequencies and transmitter positive match |
| CN109150322A (en) * | 2017-06-27 | 2019-01-04 | 中兴通讯股份有限公司 | Vector standing-wave ratio acquisition methods, FPGA and remote radio unit (RRU) |
| CN112737705A (en) * | 2020-12-29 | 2021-04-30 | 京信网络系统股份有限公司 | Automatic electronic tuning device and automatic electronic tuning method for standing-wave ratio |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0859237A1 (en) * | 1997-02-14 | 1998-08-19 | Nokia Mobile Phones Ltd. | Method and device for monitoring at least one antenna-branch, in particular in a car |
| JPH1131980A (en) * | 1997-07-10 | 1999-02-02 | Yaesu Musen Co Ltd | Swr display device of radio transmitter |
| US7151382B1 (en) * | 2005-09-22 | 2006-12-19 | Rockwell Collins, Inc. | Apparatus and method for radio frequency power and standing wave ratio measurement |
| CN101393241A (en) * | 2008-11-07 | 2009-03-25 | 武汉虹信通信技术有限责任公司 | TD-SCDMA far-end radio frequency unit antenna port standing wave ratio measurement method and apparatus |
| CN101478354A (en) * | 2009-01-20 | 2009-07-08 | 信息产业部通信计量中心 | Radio frequency automatic test system for wireless communication base station |
| CN101860891A (en) * | 2010-05-31 | 2010-10-13 | 华为技术有限公司 | Method for testing standing-wave ratio, base station and network management system |
| CN102084542A (en) * | 2008-08-04 | 2011-06-01 | 弗拉克托斯股份有限公司 | Antennaless wireless device capable of operation in multiple frequency regions |
| CN203734680U (en) * | 2013-12-27 | 2014-07-23 | 常州国光数据通信有限公司 | Voltage standing-wave ratio measuring device for short-wave band |
| CN104410467A (en) * | 2014-11-20 | 2015-03-11 | 中国人民解放军65049部队 | Antenna turner detecting system |
| CN104579516A (en) * | 2014-12-04 | 2015-04-29 | 大唐移动通信设备有限公司 | Standing-wave ratio detecting method and equipment |
-
2015
- 2015-06-18 CN CN201510341215.4A patent/CN106324352B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0859237A1 (en) * | 1997-02-14 | 1998-08-19 | Nokia Mobile Phones Ltd. | Method and device for monitoring at least one antenna-branch, in particular in a car |
| JPH1131980A (en) * | 1997-07-10 | 1999-02-02 | Yaesu Musen Co Ltd | Swr display device of radio transmitter |
| US7151382B1 (en) * | 2005-09-22 | 2006-12-19 | Rockwell Collins, Inc. | Apparatus and method for radio frequency power and standing wave ratio measurement |
| CN102084542A (en) * | 2008-08-04 | 2011-06-01 | 弗拉克托斯股份有限公司 | Antennaless wireless device capable of operation in multiple frequency regions |
| CN101393241A (en) * | 2008-11-07 | 2009-03-25 | 武汉虹信通信技术有限责任公司 | TD-SCDMA far-end radio frequency unit antenna port standing wave ratio measurement method and apparatus |
| CN101478354A (en) * | 2009-01-20 | 2009-07-08 | 信息产业部通信计量中心 | Radio frequency automatic test system for wireless communication base station |
| CN101860891A (en) * | 2010-05-31 | 2010-10-13 | 华为技术有限公司 | Method for testing standing-wave ratio, base station and network management system |
| CN203734680U (en) * | 2013-12-27 | 2014-07-23 | 常州国光数据通信有限公司 | Voltage standing-wave ratio measuring device for short-wave band |
| CN104410467A (en) * | 2014-11-20 | 2015-03-11 | 中国人民解放军65049部队 | Antenna turner detecting system |
| CN104579516A (en) * | 2014-12-04 | 2015-04-29 | 大唐移动通信设备有限公司 | Standing-wave ratio detecting method and equipment |
Non-Patent Citations (3)
| Title |
|---|
| THOMAS M.GLUYAS .ET AL: "Improving TV Transmitter System VSWR and", 《IEEE TRANSACTIONS ON BROADCASTING》 * |
| 崔立忠 等: "DX-200中波发射机天线电压驻波比取样电路工作原理及调整", 《中国新闻技术工作者联合会第六次会员代表大会论文集》 * |
| 徐帮辉 等: "MF-200多频中波发射机的研制", 《2014国际传输与覆盖研讨会论文集》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109150322A (en) * | 2017-06-27 | 2019-01-04 | 中兴通讯股份有限公司 | Vector standing-wave ratio acquisition methods, FPGA and remote radio unit (RRU) |
| CN109150322B (en) * | 2017-06-27 | 2021-10-15 | 中兴通讯股份有限公司 | Vector standing-wave ratio obtaining method, FPGA and remote radio frequency unit |
| CN107682097A (en) * | 2017-11-14 | 2018-02-09 | 京信通信系统（中国）有限公司 | A kind of apparatus and method of power monitoring |
| CN107682097B (en) * | 2017-11-14 | 2023-11-24 | 京信网络系统股份有限公司 | Device and method for monitoring power |
| CN108900204A (en) * | 2018-06-27 | 2018-11-27 | 郑州菘天电子科技有限公司 | A kind of method of antenna frequencies and transmitter positive match |
| CN108900204B (en) * | 2018-06-27 | 2020-11-24 | 郑州菘天电子科技有限公司 | Method for actively matching antenna frequency with transmitter |
| CN112737705A (en) * | 2020-12-29 | 2021-04-30 | 京信网络系统股份有限公司 | Automatic electronic tuning device and automatic electronic tuning method for standing-wave ratio |
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