CN114115079B - Control circuit and communication device - Google Patents
Control circuit and communication device Download PDFInfo
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- CN114115079B CN114115079B CN202111644323.0A CN202111644323A CN114115079B CN 114115079 B CN114115079 B CN 114115079B CN 202111644323 A CN202111644323 A CN 202111644323A CN 114115079 B CN114115079 B CN 114115079B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/21—Pc I-O input output
- G05B2219/21119—Circuit for signal adaption, voltage level shift, filter noise
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Abstract
The application relates to a control circuit and a communication device, wherein the control circuit comprises a first switch circuit and an interference detection module; the first switch circuit is respectively connected with the anti-interference module, a central antenna unit in the plurality of antenna units and the interference detection module; the interference detection module is connected with the anti-interference module and the power supply module, and the power supply module is connected with the anti-interference module; the anti-interference module is used for controlling the first switch circuit to conduct a first channel between a central antenna unit and the anti-interference module in the plurality of antenna units and to cut off a second channel between the central antenna unit and the interference detection module when the anti-interference module is powered on; the interference detection module is used for outputting a first control signal to the power supply module according to an interference state level signal output by the anti-interference module when the first channel is switched on and the second channel is switched off; the power module is used for controlling the power module to stop supplying power to the anti-interference module when the first control signal is at the first level. The anti-interference module can be automatically closed when the interference is weak, and the power consumption is reduced.
Description
Technical Field
The present application relates to the field of wireless communication technologies, and in particular, to a control circuit and a communication device.
Background
The Beidou satellite navigation system is widely applied as a high-precision global satellite navigation system at present. However, because the Beidou satellite is far away, satellite signals received by the receiver are weak, and transmission channels of the receiver are easily affected due to various electromagnetic signal interferences of a complex electromagnetic environment on the earth surface.
Therefore, an anti-interference antenna is provided, in which an anti-interference module is added in a receiver to perform anti-interference processing on a received satellite signal; to this anti-interference module, can be connected with external control device through communication serial ports, the user of being convenient for can be according to the instruction of interference indicator lamp, the switching on and switching off of anti-interference module artificially.
However, in the existing manual control mode, under the condition that manual control switching is not timely, the anti-interference module is always in a working state, a large amount of power consumption is generated, and the power consumption of the receiver is large.
Disclosure of Invention
In view of the above, it is necessary to provide a control circuit and a communication device capable of automatically detecting the interference strength of a signal and automatically controlling an anti-interference module to be turned on or off to reduce power consumption of the communication device.
In a first aspect, the present application provides a control circuit, applied to a receiving circuit, where the receiving circuit includes multiple antenna units, an anti-interference module, and a power supply module, and the control circuit includes a first switch circuit and an interference detection module; the first switch circuit is respectively connected with the anti-interference module, a central antenna unit in the plurality of antenna units and the interference detection module; the interference detection module is also connected with the anti-interference module and the power supply module, and the power supply module is also connected with the anti-interference module;
the anti-interference module is used for controlling the first switch circuit to conduct a first channel between a central antenna unit and the anti-interference module in the plurality of antenna units and to cut off a second channel between the central antenna unit and the interference detection module when the anti-interference module is powered on;
the interference detection module is used for outputting a first control signal to the power supply module according to an interference state level signal output by the anti-interference module when the first channel is switched on and the second channel is switched off; the interference state level signal represents the interference strength of the received signal of the antenna unit;
and the power supply module is used for controlling the power supply module to stop supplying power to the anti-interference module when the first control signal is at the first level.
In one embodiment, the anti-jamming module is further configured to control the first switch circuit to turn off the first path and turn on the second path when detecting that the jamming strength of the received signal of the antenna unit is smaller than a preset threshold;
the interference detection module is also used for sending a second control signal to the power supply module according to the received signal of the central antenna unit and the interference state level signal when the first channel is switched off and the second channel is switched on;
and the power supply module is also used for determining whether to supply power to the anti-interference module according to the second control signal.
In one embodiment, the jammer detection module includes a jammer detection circuit and a logic circuit; the interference detection circuit is connected with the first switch circuit and the first input end of the logic circuit; the second input end of the logic circuit is connected with the first output end of the anti-interference module, and the output end of the logic circuit is connected with the input end of the power supply module;
the interference detection circuit is used for outputting a first level signal according to the interference strength of the received signal of the central antenna unit when the first path is switched off and the second path is switched on;
and the logic circuit is used for outputting a second control signal according to the first level signal and the interference state level signal.
In one embodiment, the logic circuit is configured to send a second control signal to the power module for instructing to supply power to the interference avoidance module when the first level signal is the second level and the interference state level signal is the first level; or when the first level signal is at a second level and the interference state level signal is at the second level, sending a second control signal for indicating to supply power to the anti-interference module to the power module; or when the first level signal is at the first level and the interference state level signal is at the first level, sending a second control signal for indicating to stop supplying power to the anti-interference module to the power module.
In one embodiment, the interference detection circuit is further configured to output a second level signal when the first path is turned on and the second path is turned off;
and the logic circuit is used for outputting the first control signal according to the second level signal and the interference state level signal.
In one embodiment, the interference detection circuit comprises an amplifier, a power divider and a detection chip, wherein the amplifier is connected with the first switch circuit and the power divider, the power divider is connected with the detection chip, and the detection chip is connected with a first input end of the logic circuit;
and the detection chip is used for outputting a first level signal according to the interference strength of the received signal of the central antenna unit when the first path is switched off and the second path is switched on.
In one embodiment, the control circuit further comprises a second switch circuit and a radio frequency output interface circuit; the second switch circuit is respectively connected with the anti-interference module, the interference detection module and the radio frequency output interface circuit;
and the second switch circuit is used for switching on a third path between the anti-interference module and the radio frequency output interface circuit according to the interference state level signal output by the anti-interference module, or switching on a fourth path between the interference detection module and the radio frequency output interface circuit.
In one embodiment, the second switch circuit is configured to turn on the third path and turn off the fourth path when the interference state level signal is at the second level; or when the interference state level signal is at the first level, the third path is turned off and the fourth path is turned on.
In one embodiment, the first switch circuit is used for turning on the first path and turning off the second path when the interference state level signal is at the second level; or when the interference state level signal is at the first level, the first path is closed and the second path is opened.
In a second aspect, the present application further provides a communication device. The communication device comprises a receiving circuit and any one of the control circuits of the first aspect described above.
The control circuit is applied to a receiving circuit, the receiving circuit comprises a plurality of antenna units, an anti-interference module and a power supply module, and the control circuit comprises a first switch circuit and an interference detection module; the first switch circuit is respectively connected with the anti-interference module, a central antenna unit in the plurality of antenna units and the interference detection module; the interference detection module is also connected with the anti-interference module and the power supply module, and the power supply module is also connected with the anti-interference module; the anti-interference module is used for controlling the first switch circuit to conduct a first channel between a central antenna unit and the anti-interference module in the plurality of antenna units and to cut off a second channel between the central antenna unit and the interference detection module when the anti-interference module is powered on; the interference detection module is used for outputting a first control signal to the power supply module according to an interference state level signal which is output by the anti-interference module and represents the interference strength of the received signal of the antenna unit when the first channel is switched on and the second channel is switched off; and the power supply module is used for controlling the power supply module to stop supplying power to the anti-interference module when the first control signal is at the first level. That is to say, the control circuit in the embodiment of the present application may automatically turn off the anti-interference module according to the interference state level signal corresponding to the interference strength of the received signal detected by the anti-interference module in real time in the working process of the anti-interference module; when the interference of the external environment is weak, the anti-interference module is automatically closed timely and rapidly, so that the anti-interference module is prevented from being in a working state all the time when the interference is weak, the power consumption of the anti-interference module is reduced, the power consumption of the whole communication equipment is reduced, the whole process does not need human participation, the user operation can be reduced, and the user experience is improved.
Drawings
Fig. 1 is a schematic structural diagram of a control circuit according to an embodiment of the present disclosure;
fig. 2 is another schematic structural diagram of a control circuit according to an embodiment of the present disclosure;
fig. 3 is another schematic structural diagram of a control circuit according to an embodiment of the present disclosure;
fig. 4 is another schematic structural diagram of a control circuit according to an embodiment of the present disclosure;
fig. 5 is a schematic diagram illustrating a complete structure of a control circuit according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a communication device provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The control circuit provided by the embodiment of the application is suitable for the technical field of wireless communication; in communication equipment, in order to avoid electromagnetic interference caused by an external electromagnetic environment with a complex earth surface to a received signal, an anti-interference module is generally arranged in the communication equipment to realize anti-interference reception of a satellite signal; aiming at the anti-interference module, the anti-interference module mainly comprises two anti-interference modes, namely a self-adaptive zeroing mode and a digital multi-beam mode, but the anti-interference module generates larger power consumption no matter which mode the anti-interference module is in; therefore, under an external environment without electromagnetic interference, the anti-interference module needs to be accurately and rapidly turned off, so that energy conservation is achieved and the service life of the anti-interference module is prolonged.
In the prior art, the anti-interference module can be manually controlled to be opened and closed only through an external communication serial port (electrically connected with the communication serial port of the anti-interference module), and the anti-interference module can be always in a working state under the condition that manual switching is not performed or manual switching is not timely, so that power consumption in a state without external electromagnetic interference is greatly caused, and long-time work of a communication system is not facilitated.
Therefore, the embodiment of the application provides a control circuit of an anti-interference module, which can automatically detect the interference strength of a received satellite signal, automatically control the anti-interference module to be opened and closed according to the interference strength of the signal, does not need manual control, and can rapidly close the anti-interference module after external electromagnetic interference is weak or interference disappears so as to reduce the power consumption of communication equipment.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a control circuit according to an embodiment of the present disclosure. As shown in fig. 1, the control circuit 20 is applied to a receiving circuit 10, the receiving circuit 10 includes a plurality of antenna units 101, an anti-jamming module 102 and a power supply module 103, the control circuit 20 includes a first switch circuit 201 and an interference detection module 202; the first switch circuit 201 is connected to the interference rejection module 102, the central antenna unit 1011 of the plurality of antenna units 101, and the interference detection module 202, respectively; the interference detection module 202 is also connected with the anti-interference module 102 and the power supply module 103, and the power supply module 103 is also connected with the anti-interference module 102; in addition, the other antenna units 101 than the center antenna unit 1011 among the plurality of antenna units 101 are connected to the interference suppression module 102.
The antijamming module 102 is configured to, when the antijamming module 102 is powered on, control the first switch circuit 201 to turn on a first path between the central antenna unit 1011 of the multiple antenna units 101 and the antijamming module 102, and turn off a second path between the central antenna unit 1011 and the interference detection module 202.
The interference detection module 202 is configured to output a first control signal to the power supply module 103 according to the interference state level signal output by the interference prevention module 102 when the first path is turned on and the second path is turned off; the interference state level signal indicates the interference strength of the received signal of the antenna unit 101.
And the power supply module 103 is configured to control the power supply module 103 to stop supplying power to the anti-interference module 102 when the first control signal is at the first level.
Optionally, the first switch circuit 201 may be a switch device, or may be a switch circuit formed by different switch devices, and the specific form of the first switch circuit 201 is not limited in this application, as long as the first switch circuit 201 can realize switching control of the first path and the second path; for example: the first switch circuit 201 may be a first single-pole double-throw switch, and the first single-pole double-throw switch may be electrically connected to a central antenna unit 1011 of the plurality of antenna units 101, and may be electrically connected to the anti-jamming module 102 and the interference detection module 202 in an on-off manner, and a first path between the central antenna unit 1011 and the anti-jamming module 102 may be conducted through the first single-pole double-throw switch, or a second path between the central antenna unit 1011 and the interference detection module 202 may be conducted through the first single-pole double-throw switch.
In addition, the path selection of the first switch circuit 201 may be controlled by the antijam module 102, and when the antijam module 102 is powered on, that is, when the antijam module 102 starts to operate, the antijam module 102 may control the first switch circuit 201 to turn on the first path between the central antenna unit 1011 and the antijam module 102, that is, the received signal of the central antenna unit 1011 is input to the antijam module 102; meanwhile, when the anti-interference module 102 is powered on, the anti-interference module 102 may supply power to other antenna units 101 connected to the anti-interference module 102 except the central antenna unit 1011, so that the other antenna units 101 may also receive satellite signals and input the received signals to the anti-interference module 102; at this time, the anti-interference module 102 performs anti-interference processing on the received signal of the central antenna unit 1011 and the received signals of the other antenna units 101, where any one of the anti-interference modes may be used to perform anti-interference processing on the received signals of the plurality of antenna units 101; since the anti-interference processing process for the received signal in different anti-interference modes is the prior art, the detailed description of this part of the content is omitted in this embodiment.
It should be noted that, powering on the anti-interference module 102, that is, controlling the anti-interference module 102 to be opened, may be manually controlling the anti-interference module 102 to be opened, or the control circuit 20 may automatically control the anti-interference module 102 to be opened according to the strength of the detected interference signal, which is not limited in this embodiment.
Further, in the working process of the anti-jamming module 102, that is, under the condition that the first path is turned on and the second path is turned off, the anti-jamming module 102 may output different jamming state level signals to the jamming detection module 202 according to the jamming strength of the receiving signal of the antenna unit 101, and the jamming detection module 202 may output a first control signal to the power supply module 103 according to the jamming state level signal, so as to control whether the power supply module 103 supplies power to the anti-jamming module 102. Optionally, the anti-jamming module 102 may output a first level of a jamming state level signal when detecting that the jamming strength of the received signal is smaller than a preset threshold, the jamming detection module 202 may output a first level of a first control signal when the first path is turned on, the second path is turned off, and the jamming state level signal is the first level, and further, the power supply module 103 may control the power supply module 103 to stop supplying power to the anti-jamming module 102 when the first control signal is the first level, that is, turn off the anti-jamming module 102. Preferably, the first level may be a low level.
Optionally, the anti-jamming module 102 may output an interference state level signal of a second level when detecting that the interference strength of the received signal is greater than or equal to a preset threshold, the interference detection module 202 may output a first control signal of the second level when the first path is turned on, the second path is turned off, and the interference state level signal is the second level, and further, the power supply module 103 may control the power supply module 103 to continue to supply power to the anti-jamming module 102 when the first control signal is the second level, that is, the anti-jamming module 102 is kept turned on. Preferably, the second level may be a high level.
It should be noted that the power module 103 provides a normal power supply for the interference detection module 202 and the central antenna unit 1011, so that the interference detection module 202 and the central antenna unit 1011 are always in an operating state; alternatively, the power module 103 may supply power to the interference detection module 202, and the interference detection module 202 feeds power to the central antenna unit 1011, so that the interference detection module 202 and the central antenna unit 1011 are always in an operating state. In addition, the receiving circuit 10 may further include a Low Noise Amplifier module (LNA) for amplifying a received signal of the antenna unit 101, wherein the central antenna unit 1011 is connected to the first switch circuit 201 through one LNA module, and the other antenna units 101 except the central antenna unit 1011 in the plurality of antenna units 101 are connected to the anti-jamming module 102 through one LNA module respectively. The number of the antenna units 101 is not limited in this embodiment, and may be 4 elements, 5 elements, 7 elements, and the like, and if an antenna unit needs to be added, only the antenna unit and the low noise amplifier module need to be added, and the rest remains unchanged.
The control circuit is applied to a receiving circuit, the receiving circuit comprises a plurality of antenna units, an anti-interference module and a power supply module, and the control circuit comprises a first switch circuit and an interference detection module; the first switch circuit is respectively connected with the anti-interference module, a central antenna unit in the plurality of antenna units and the interference detection module; the interference detection module is also connected with the anti-interference module and the power supply module, and the power supply module is also connected with the anti-interference module; the anti-interference module is used for controlling the first switch circuit to conduct a first channel between a central antenna unit and the anti-interference module in the plurality of antenna units and to cut off a second channel between the central antenna unit and the interference detection module when the anti-interference module is powered on; the interference detection module is used for outputting a first control signal to the power supply module according to an interference state level signal which is output by the anti-interference module and represents the interference strength of the receiving signal of the antenna unit when the first path is switched on and the second path is switched off; and the power supply module is used for controlling the power supply module to stop supplying power to the anti-interference module when the first control signal is at the first level. That is to say, the control circuit in the embodiment of the present application may automatically turn off the anti-interference module according to the interference state level signal corresponding to the interference strength of the received signal detected by the anti-interference module in real time in the working process of the anti-interference module; when the interference of the external environment is weak, the anti-interference module is automatically closed timely and rapidly, so that the anti-interference module is prevented from being in a working state all the time when the interference is weak, the power consumption of the anti-interference module is reduced, the power consumption of the whole communication equipment is reduced, the whole process does not need human participation, the user operation can be reduced, and the user experience is improved.
In an embodiment, the anti-jamming module 102 is further configured to control the first switch circuit 201 to turn off the first path and turn on the second path when detecting that the interference strength of the received signal of the antenna unit is smaller than a preset threshold; the interference detection module 202 is further configured to send a second control signal to the power module 103 according to the received signal of the central antenna unit 1011 and the interference state level signal when the first path is turned off and the second path is turned on; and the power supply module 103 is further configured to determine whether to supply power to the anti-jamming module 102 according to the second control signal.
That is, when the interference strength of the received signal of the antenna unit is smaller than the preset threshold (that is, the external electromagnetic interference is weak), the first switch circuit 201 turns off the first path between the central antenna unit 1011 and the anti-interference module 102, and turns on the second path between the central antenna unit 1011 and the interference detection module 202, and since the anti-interference module 102 is turned off at this time, the other antenna units also stop working, and the central antenna unit 1011 receives the signal and inputs the received signal to the interference detection module 202 for signal processing and transmission. Meanwhile, the interference detection module 202 may further send a second control signal to the power module 103 according to the received signal of the central antenna unit 1011 and the interference state level signal of the anti-interference module 102 when the first path is turned off and the second path is turned on; so that the power module 103 determines whether to supply power to the immunity module 102 according to the second control signal.
Alternatively, the interference detection module 202 may send the second control signal to the power module 103 according to the interference strength of the received signal of the central antenna unit 1011 and the interference state level signal of the anti-interference module 102 when the first path is turned off and the second path is turned on; because the anti-interference module 102 outputs the interference state level signal of the first level when the interference strength of the received signal of the antenna unit is smaller than the preset threshold, based on this, the interference detection module 202 may send the second control signal of the first level to the power module 103 when the interference strength of the received signal of the central antenna unit 1011 is smaller than the preset threshold, and the power module 103 prohibits power supply to the anti-interference module 102 when the second control signal is the first level, that is, when the external electromagnetic interference is weak, the anti-interference module 102 is turned off to prohibit the anti-interference module 102 from working; when the interference strength of the received signal of the central antenna unit 1011 is greater than or equal to the preset threshold, a second control signal of a second level is sent to the power module 103, and when the second control signal is at the second level, the power module 103 supplies power to the anti-interference module 102, that is, when the external electromagnetic interference is strong, the anti-interference module 102 is automatically turned on, so that the anti-interference module 102 starts to work.
In this embodiment, the anti-interference module is further configured to control the first switch circuit to turn off the first path and turn on the second path when detecting that the interference strength of the received signal of the antenna unit is smaller than a preset threshold; the interference detection module is also used for sending a second control signal to the power supply module according to the received signal of the central antenna unit and the interference state level signal when the first channel is switched off and the second channel is switched on; and the power supply module is also used for determining whether to supply power to the anti-interference module according to the second control signal. That is to say, under the circumstances of closing anti-interference module, can detect the interference strength of received signal through interference detection module, and the opening or closing of automatic control anti-interference module, need not artificial participation, can be according to external environment's electromagnetic interference intensity, in time open or close anti-interference module, the degree of automation and the intelligence that anti-interference module opened or closed control have been improved, the problem that the communication quality that anti-interference module untimely leads to is opened under the manual operation is poor has been avoided, and the problem that the power consumption that untimely leads to of closing under the manual operation is higher has been avoided, and then can improve communication equipment's wholeness ability.
In one embodiment, as shown in fig. 2, the jammer detection module 202 includes jammer detection circuitry 2021 and logic circuitry 2022; the interference detection circuit 2021 is connected to the first switch circuit 201 and a first input terminal of the logic circuit 2022; a second input end of the logic circuit 2022 is connected to a first output end of the anti-jamming module 102, and an output end of the logic circuit 2022 is connected to an input end of the power module 103; an interference detection circuit 2021 for outputting a first level signal according to the interference intensity of the received signal of the center antenna unit 1011 when the first path is turned off and the second path is turned on; the logic circuit 2022 is configured to output a second control signal according to the first level signal and the interference state level signal.
Alternatively, the interference detection circuit 2021 may be an interference detection chip, or may be an interference detection circuit 2021 composed of an interference detection chip and other circuit elements or modules, and the form of the interference detection circuit 2021 is not limited in the present application as long as it can determine the interference intensity of the received signal of the center antenna unit 1011 and output a first level signal indicating the interference intensity of the received signal.
Alternatively, the logic circuit 2022 may be a logic judgment circuit composed of at least one logic gate, and outputs the second control signal according to the first level signal output by the interference detection circuit 2021 and the interference state level signal output by the interference rejection module 102. Optionally, in this embodiment, the logic circuit 2022 may be a logic or gate, and when detecting that the interference strength of the received signal of the central antenna unit 1011 is smaller than a preset threshold (that is, the external electromagnetic interference is weak), the interference detection circuit 2021 may output a first level signal of a first level, and after the first level signal of the first level and the interference state level signal of the first level pass through the logic or gate, output a second control signal of the first level, where the first level is a low level, at this time, the power supply module 103 prohibits power supply to the anti-interference module 102, and the anti-interference module 102 is in a closed state.
Optionally, when detecting that the interference strength of the received signal of the central antenna unit 1011 is greater than or equal to a preset threshold (that is, the external electromagnetic interference is strong), the interference detection circuit 2021 may output a first level signal of a second level, and after the first level signal of the second level and the interference state level signal of the first level pass through the logic or gate, output a second control signal of the second level, where the first level is a low level and the second level is a high level, and at this time, the power module 103 supplies power to the anti-interference module 102, and the anti-interference module 102 is powered on and is in an open state.
Then, after the anti-interference module 102 is powered on, the anti-interference module 102 receives the received signals of the other antenna units 101, and detects that the interference strength of the received signals of the other antenna units 101 is greater than or equal to a preset threshold, and at this time, the output interference state level signal is converted from a first level to a second level; when the interference state level signal is at the second level, the first switch circuit 201 turns on a first path between the central antenna unit 1011 and the interference rejection module 102 in the plurality of antenna units 101, and turns off a second path between the central antenna unit 1011 and the interference detection circuit 2021; since no signal is input to the interference detection circuit 2021, the output first level signal is converted from the second level to the first level. Here, since the interference state level signal output by the interference rejection module 102 is directly connected to the input terminal of the logic circuit 2022, and the change of the first level signal output by the interference detection circuit 2021 needs to pass through the first switch circuit 201 and the interference detection circuit 2021 and then be connected to the input terminal of the logic circuit 2022, the signal transition time of the interference state level signal output by the interference rejection module 102 is shorter than the signal transition time of the first level signal output by the interference detection circuit 2021; that is, in the signal conversion process, the interference state level signal output by the interference rejection module 102 is the second level, and the first level signal output by the interference detection circuit 2021 is still the second level; then, after passing through the logical or gate, the output second control signal is still at the second level, at this time, the power module 103 continues to supply power to the anti-jamming module 102, and the anti-jamming module 102 is in an open state.
After the signal conversion is completed, that is, the interference detection circuit 2021 has no signal access, the output first level signal is converted from the second level to the first level, that is, under the condition that the first path is on and the second path is off, at this time, the interference detection circuit 2021 outputs the second level signal whose level state is the first level, the interference prevention module 102 outputs the interference state level signal whose level state is the second level, and after passing through the logic or gate, the first control signal whose level state is the second level is output; the power module 103 continues to supply power to the anti-jamming module 102 when the first control signal is at the second level.
In this embodiment, the interference detection module includes an interference detection circuit and a logic circuit; the interference detection circuit is connected with the first switch circuit and the first input end of the logic circuit; the second input end of the logic circuit is connected with the first output end of the anti-interference module, and the output end of the logic circuit is connected with the input end of the power supply module; the interference detection circuit is used for outputting a first level signal according to the interference strength of the received signal of the central antenna unit when the first path is turned off and the second path is turned on; and the logic circuit is used for outputting a second control signal according to the first level signal and the interference state level signal. The interference detection and the power supply control of the anti-interference module are realized through the hardware circuit structure of the interference detection circuit and the logic circuit, the implementability of the interference detection module is improved, and the circuit structure is simple and easy to realize.
In one embodiment, as shown in fig. 3, the interference detector circuit 2021 includes an amplifier 301, a power divider 302, and a detector chip 303, the amplifier 301 is connected to the first switch circuit 201 and the power divider 302, the power divider 302 is connected to the detector chip 303, and the detector chip 303 is connected to a first input terminal of the logic circuit 2022; the detector chip 303 is configured to output a first level signal according to the interference strength of the received signal of the center antenna unit 1011 when the first path is turned off and the second path is turned on.
Optionally, the amplifier 301 is configured to amplify a received signal of the central antenna unit 1011, or perform secondary amplification on an output signal after primary amplification by a low noise amplifier module connected to the central antenna unit 1011, so as to meet a signal power requirement; the relevant parameters of the amplifier 301 can be flexibly adjusted and set according to the actual power requirement, which is not specifically limited in this embodiment. The amplifier 301 may be a high linearity amplifier 301, or may be another type of amplifier 301, and the type of amplifier 301 is not limited in this embodiment.
Optionally, the power divider 302 is configured to perform power division on the signal output by the amplifier 301 to output multiple signals; alternatively, the power divider 302 may perform equal power division on the signal output by the amplifier 301, and output two paths of signals, where one path of signals is input to the detector chip 303, and the other path of signals may be output as a signal, and perform normal signal demodulation processing.
Optionally, the detection chip 303 is configured to determine an interference strength of the received signal of the central antenna unit 1011 when the first path is turned off and the second path is turned on, and output a first level signal indicating the interference strength of the received signal; alternatively, the detection chip 303 may convert the received signal of the central antenna unit 1011 into a voltage signal, and compare the magnitude relationship between the voltage signal and a preset voltage signal through the operational amplifier 301 to determine whether the interference strength of the received signal of the central antenna unit 1011 is smaller than a preset threshold; it should be noted that the magnitude of the preset voltage signal can be flexibly adjusted and set according to actual requirements; in addition, as for the operation principle of the detector chip 303, other methods of determining the signal interference intensity may be adopted, for example: the determination may be performed by converting the signal into a current signal, a resistance signal, a power signal, or other circuit signals, and the method for determining the voltage signal according to the present embodiment is only described as an example, and is not limited to the operation principle of the detector chip 303.
In this embodiment, the interference detection circuit includes an amplifier, a power divider, and a detection chip, the amplifier is connected to the first switch circuit and the power divider, the power divider is connected to the detection chip, and the detection chip is connected to the first input terminal of the logic circuit; the detection chip is used for outputting a first level signal according to the interference strength of the received signal of the central antenna unit when the first path is switched off and the second path is switched on; the amplifier amplifies the received signal, so that the accuracy of detecting the interference intensity of the received signal can be improved, the power divider is used for carrying out interference detection and signal output distribution, the isolation between the signal detection and the signal output can be improved, and the interference detection performance and the signal communication quality of the communication equipment can be further ensured.
In one embodiment, as shown in fig. 4, the control circuit 20 further includes a second switch circuit 203 and a radio frequency output interface circuit 204; the second switch circuit 203 is respectively connected with the anti-interference module 102, the interference detection module 202 and the radio frequency output interface circuit 204; the second switch circuit 203 is configured to switch on a third path between the anti-jamming module 102 and the radio frequency output interface circuit 204 according to the interference state level signal output by the anti-jamming module 102, or switch on a fourth path between the interference detection module 202 and the radio frequency output interface circuit 204.
Optionally, the second switch circuit 203 may be a switch device, or a switch circuit formed by different switch devices, and the application does not limit the specific form of the second switch circuit 203, as long as the second switch circuit 203 can realize switching control of the third path and the fourth path; for example: the second switch circuit 203 may be a second single-pole double-throw switch, which may be electrically connected to the rf output interface, and may be electrically connected to the anti-interference module 102 and the interference detection module 202 in an on-off manner, and a third path between the anti-interference module 102 and the rf output interface circuit 204 may be conducted through the second single-pole double-throw switch, or a fourth path between the interference detection module 202 and the rf output interface circuit 204 may be conducted through the second single-pole double-throw switch.
Optionally, the second switch circuit 203 may turn off a third path between the immunity module 102 and the rf output interface circuit 204 and turn on a fourth path between the immunity detection module 202 and the rf output interface circuit 204 when the interference state level signal output by the immunity module 102 is at the first level; when the interference state level signal output by the interference rejection module 102 is the second level, the third path between the interference rejection module 102 and the rf output interface circuit 204 is turned on, and the fourth path between the interference detection module 202 and the rf output interface circuit 204 is turned off.
Optionally, for the above control manner in which the anti-jamming module 102 controls the first switch circuit 201 to turn off/on the first path and turn off/on the second path, the jamming state level signal output by the anti-jamming module 102 may be used to control the first switch circuit 201. Alternatively, in a case where the interference state level signal output by the interference rejection module 102 is at the first level, the first switch circuit 201 may turn off a first path between the central antenna unit 1011 and the interference rejection module 102 among the plurality of antenna units 101, and turn on a second path between the central antenna unit 1011 and the interference detection module 202; when the interference state level signal output from the interference suppression module 102 is at the second level, a first path between the center antenna unit 1011 and the interference suppression module 102 among the plurality of antenna units 101 is turned on, and a second path between the center antenna unit 1011 and the interference detection module 202 is turned off.
In this embodiment, the control circuit further includes a second switch circuit and a radio frequency output interface circuit; the second switch circuit is respectively connected with the anti-interference module, the interference detection module and the radio frequency output interface circuit; the second switch circuit is used for conducting a third channel between the anti-interference module and the radio frequency output interface circuit according to the interference state level signal output by the anti-interference module, or conducting a fourth channel between the interference detection module and the radio frequency output interface circuit; the switching of the signal output channels can be realized, namely, when the external interference is weak, the signal is received and transmitted through the interference detection module and the radio frequency output interface circuit, and when the external interference is strong, the signal is received and transmitted through the anti-interference module and the radio frequency output interface circuit, so that the reliability of signal transmission is greatly improved.
In one embodiment, a complete structural schematic of the control circuit is provided, as shown in FIG. 5. In an initial state, an interference state level output by the anti-interference module is a low level (or a high resistance state), a received signal of the array center antenna unit 1 enters the single-pole double-throw switch 1 after being amplified by the low noise amplifier module LNA1, the single-pole double-throw switch 1 inputs the received signal into the amplifier for amplification processing, then, after power distribution through the power distributor and the like, one path of the received signal is output to the radio frequency output interface circuit through the single-pole double-throw switch 2, and the other path of the received signal is subjected to interference intensity detection through the detection chip; if the interference intensity of the received signal is smaller than the preset threshold value, the detection chip outputs a low level, the power control level (namely, the second control signal) output by the interference state level (low level) output by the anti-interference module after passing through a logic or gate is the low level, the power module prohibits power supply to the anti-interference module, and the anti-interference module is in a closed state. If the interference intensity of the received signal is greater than or equal to the preset threshold, the detection chip outputs a high level, the power control level (namely, the second control signal) output by the detection chip and the interference state level (low level) output by the anti-interference module after passing through a logic or gate is the high level, at the moment, the power module supplies power to the anti-interference module, and the anti-interference module is opened.
Then, the anti-interference module is powered on to feed the peripheral array antenna units 2, 3 and 4 and obtain the receiving signals of the peripheral array antenna units 2, 3 and 4, because the interference strength of the receiving signals of the antenna units is greater than or equal to the preset threshold value at this time, the interference state level output by the anti-interference module is converted from the low level to the high level, the output high level of the detection chip is the same as the output high level of the detection chip, after passing through the logic or gate, the output power control level (namely, the first control signal) is the high level, and at this time, the power supply module continues to supply power to the anti-interference module. When the interference state level output by the anti-interference module is converted into a high level, the receiving signal of the array central antenna unit 1 is input to the anti-interference module through the single-pole double-throw switch 1, the anti-interference module performs anti-interference algorithm processing on the receiving signal of the array central antenna unit 1 and the receiving signals of the peripheral array antenna units 2, 3 and 4 to obtain a signal after anti-interference processing, and the signal is transmitted to the radio frequency output interface circuit through the single-pole double-throw switch 2 to perform normal signal demodulation.
Further, when the anti-interference module detects that the interference intensity of the received signal is smaller than a preset threshold value, the interference state level output by the anti-interference module is converted from a high level to a low level, a power supply control level is output to be a low level after passing through a logical or gate, the power supply module stops supplying power to the anti-interference module, and the anti-interference module is turned off; meanwhile, the single-pole double-throw switch 1 and the single-pole double-throw switch 2 are switched to an interference detection module passage to carry out transmission of a received signal and detection of interference strength of the received signal.
In one embodiment, as shown in fig. 6, a communication device 900 is provided, the communication device 900 comprising a receiving circuit 10 and a control circuit 20 of any of the above embodiments. Alternatively, the receiving circuit 10 may include a plurality of antenna units 101, a low noise amplifier module 104 corresponding to each antenna unit, an anti-interference module 102, and a power supply module 103, and the control circuit 20 may include a first switch circuit 201, an interference detection module 202, a second switch circuit 203, and a radio frequency output interface circuit 204, where the interference detection module 202 includes an amplifier 301, a power divider 302, a detection chip 303, and a logic circuit 2022.
For detailed analysis, reference may be made to the description of the control circuit in each of the above embodiments, and details are not repeated herein.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.
Claims (10)
1. The control circuit is applied to a receiving circuit, the receiving circuit comprises a plurality of antenna units, an anti-interference module and a power supply module, and the control circuit comprises a first switch circuit and an interference detection module; the first switch circuit is respectively connected with the anti-interference module, a central antenna unit in the plurality of antenna units and the interference detection module; the interference detection module is also connected with the anti-interference module and the power supply module, and the power supply module is also connected with the anti-interference module;
the anti-jamming module is used for controlling the first switch circuit to conduct a first channel between a central antenna unit in the plurality of antenna units and the anti-jamming module and to cut off a second channel between the central antenna unit and the interference detection module when the anti-jamming module is powered on;
the anti-interference module is further configured to output different interference state level signals according to interference strengths of the received signals of the plurality of antenna units when the first path is turned on and the second path is turned off;
the interference detection module is used for outputting a first control signal to the power supply module according to an interference state level signal output by the anti-interference module when the first channel is switched on and the second channel is switched off; the interference state level signal represents the interference strength of the received signal of the antenna unit;
the power supply module is used for controlling the power supply module to stop supplying power to the anti-interference module when the first control signal is at a first level; the first level is used for indicating that the interference strength of the received signals of the antenna units is smaller than a preset threshold value.
2. The control circuit according to claim 1, wherein the interference rejection module is further configured to control the first switch circuit to turn off the first path and turn on the second path when detecting that the interference strength of the received signal of the antenna unit is smaller than a preset threshold;
the interference detection module is further configured to send a second control signal to the power supply module according to the received signal of the central antenna unit and the interference state level signal when the first path is turned off and the second path is turned on;
and the power supply module is also used for determining whether to supply power to the anti-interference module according to the second control signal.
3. The control circuit of claim 2, wherein the jammer detection module comprises a jammer detection circuit and a logic circuit; the interference detection circuit is connected with the first switch circuit and the first input end of the logic circuit; the second input end of the logic circuit is connected with the first output end of the anti-interference module, and the output end of the logic circuit is connected with the input end of the power module;
the interference detection circuit is used for outputting a first level signal according to the interference strength of the received signal of the central antenna unit when the first path is switched off and the second path is switched on;
the logic circuit is configured to output the second control signal according to the first level signal and the interference state level signal.
4. The control circuit of claim 3, wherein the logic circuit is configured to send a second control signal to the power module indicating to power the immunity module when the first level signal is at a second level and the interference state level signal is at a first level; or when the first level signal is at a second level and the interference state level signal is at the second level, sending a second control signal for indicating to supply power to the anti-interference module to the power module; or when the first level signal is a first level and the interference state level signal is a first level, sending a second control signal for indicating to stop supplying power to the anti-interference module to the power module.
5. The control circuit of claim 3, wherein the interference detection circuit is further configured to output a second level signal when the first path is turned on and the second path is turned off;
the logic circuit is configured to output the first control signal according to the second level signal and the interference state level signal.
6. The control circuit of claim 3 or 4, wherein the interference detector circuit comprises an amplifier, a power divider, and a detector chip, the amplifier being connected to the first switch circuit and the power divider, the power divider being connected to the detector chip, and the detector chip being connected to the first input of the logic circuit;
the detection chip is used for outputting a first level signal according to the interference strength of the received signal of the central antenna unit when the first path is switched off and the second path is switched on.
7. The control circuit of claim 1, further comprising a second switching circuit and a radio frequency output interface circuit; the second switch circuit is respectively connected with the anti-interference module, the interference detection module and the radio frequency output interface circuit;
and the second switch circuit is used for switching on a third channel between the anti-interference module and the radio frequency output interface circuit or switching on a fourth channel between the interference detection module and the radio frequency output interface circuit according to the interference state level signal output by the anti-interference module.
8. The control circuit of claim 7, wherein the second switch circuit is configured to turn on the third path and turn off the fourth path when the disturb-state level signal is at a second level; or, when the interference state level signal is at a first level, the third path is turned off and the fourth path is turned on.
9. The control circuit of claim 1, wherein the first switch circuit is configured to turn on the first path and turn off the second path when the disturb-state level signal is at a second level; or, when the interference state level signal is at a first level, the first path is turned off and the second path is turned on.
10. A communication device comprising a receiving circuit and a control circuit as claimed in any one of claims 1 to 9.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206147101U (en) * | 2016-11-05 | 2017-05-03 | 长沙海格北斗信息技术有限公司 | Take anti -interference change over switch's big dipper anti -interference antenna |
| CN108347759A (en) * | 2018-02-07 | 2018-07-31 | 维沃移动通信有限公司 | A kind of anti-interference method and mobile terminal of flexible screen |
| CN113534197A (en) * | 2021-06-10 | 2021-10-22 | 领翌技术(横琴)有限公司 | Interference detection method and device for satellite positioning signal |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8667836B2 (en) * | 2011-03-22 | 2014-03-11 | Orange Electronic Co., Ltd. | Anti-interference antenna of a wireless tire pressure receiver |
| CN203299387U (en) * | 2013-06-25 | 2013-11-20 | 成都国星通信有限公司 | Beidou anti-interference equipment with anti-interference switching switch |
| TWI591972B (en) * | 2014-04-16 | 2017-07-11 | 微晶片科技公司 | Wireless interference scanning method and device for adaptive frequency hopping |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206147101U (en) * | 2016-11-05 | 2017-05-03 | 长沙海格北斗信息技术有限公司 | Take anti -interference change over switch's big dipper anti -interference antenna |
| CN108347759A (en) * | 2018-02-07 | 2018-07-31 | 维沃移动通信有限公司 | A kind of anti-interference method and mobile terminal of flexible screen |
| CN113534197A (en) * | 2021-06-10 | 2021-10-22 | 领翌技术(横琴)有限公司 | Interference detection method and device for satellite positioning signal |
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