CN111555779A - Bluetooth transceiving circuit based on vehicle parking and radio frequency signal expansion method thereof - Google Patents
Bluetooth transceiving circuit based on vehicle parking and radio frequency signal expansion method thereof Download PDFInfo
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Abstract
The invention discloses a Bluetooth transceiving circuit based on vehicle parking and a radio frequency signal expansion method thereof, which comprises the following steps: the power supply comprises a power supply module, a Bluetooth transmitting module, a Bluetooth receiving module, a gain power amplifying module and a radio frequency signal control module, wherein a diode D1 in the power supply module keeps the stability of an output voltage value according to an input voltage value, and a capacitor C1 eliminates current impact generated by a voltage regulator U5; a crystal oscillator tube X1 in the Bluetooth transmitting module maintains the stability of a transmitting end T1 radio frequency signal and the resonance effect in a circuit; a resistor R3 in the Bluetooth receiving module is grounded to eliminate interference signals received during Bluetooth signal pairing; an inductor L4 and a capacitor C11 in the gain power amplification module are connected in parallel to form a filter circuit to inhibit other signals from being conducted, a coupler U3 blocks an interference frequency band generated in gain power amplification, and a triode Q3 in the radio frequency signal control module serves as a contactless switch to receive a Bluetooth transmitting module instruction through a Bluetooth receiving module, so that wireless transmission of the instruction is achieved.
Description
Technical Field
The invention relates to the technical field of Bluetooth, in particular to a Bluetooth receiving and transmitting circuit based on vehicle parking and a radio frequency signal expansion method thereof.
Background
The bluetooth technology is a radio technology for short-distance communication of devices, which can perform wireless information exchange among a plurality of devices including mobile phones, PDAs, wireless headsets, related peripherals, etc., and can effectively simplify communication between mobile communication terminal devices and also successfully simplify communication between devices and the internet by using the bluetooth technology, thereby accelerating transmission of transmission, widening the way for wireless communication,
the existing vehicle berth transceiver circuit has low frequency when the radio frequency signals of the Bluetooth transmitting end and the Bluetooth receiving end are transmitted, and has low energy consumption in the process of the radio frequency signal transmission, but needs to continuously operate in a standby mode to timely respond to connection so as to cause continuous energy consumption, and can be obstructed by obstacles when the Bluetooth transmitting end transmits the generated radio frequency signals, so that the transmission range of the radio frequency signals is consumed, the Bluetooth receiving end cannot rapidly receive the radio frequency signals, and the vehicle berth is deviated; when the Bluetooth transmitting end transmits radio frequency signals, the stability of transmitted data cannot be maintained, so that the detection difficulty of the receiving end is further aggravated; the Bluetooth receiving module cannot be rapidly filtered when being interfered, and the conduction of radio frequency signals is restrained, so that the received signals fluctuate, and the transmission of instructions is influenced.
Disclosure of Invention
The purpose of the invention is as follows: the utility model provides a bluetooth transceiver circuit based on vehicle berth to solve above-mentioned problem.
The technical scheme is as follows: a vehicle berth-based Bluetooth transceiving circuit, comprising:
the power supply module is used for supplying the stabilized power supply to the Bluetooth transmitting module and the Bluetooth receiving module, and distributing the other part of the power supply to the battery pack B1 for storage;
the Bluetooth transmitting module is used for generating a radio frequency signal transmitting end by the power supply provided by the power supply module and further providing a radio frequency signal instruction for the Bluetooth receiving module;
the Bluetooth receiving module is used for receiving the radio frequency signal generated by the Bluetooth transmitting module so as to transmit data and complete command control;
the gain power amplification module is used for providing a radio frequency wave band of a high-range detection transmitting signal for the Bluetooth receiving module and enabling a Bluetooth receiving end to receive the signal and respond quickly;
and the radio frequency signal control module is used for controlling the on-off of the signal after the gain power amplification module is adjusted.
According to one aspect of the invention, the diode D1 in the power module keeps the output voltage value stable according to the input voltage value, the capacitor C1 eliminates the current surge generated by the voltage regulator U5, and the capacitor C2 provides the starting operation power for the voltage regulator U5;
a crystal oscillator tube X1 in the Bluetooth transmitting module is used for maintaining the stability of a transmitting end T1 radio frequency signal and the resonance effect in a circuit, and a triode Q2 is used for controlling the on-off of the transmitting end radio frequency signal;
the Bluetooth receiving module obtains the output quality of the Bluetooth transmitting module through a receiving end T2 to realize pairing, and a resistor R3 is grounded to eliminate interference signals received during Bluetooth signal pairing;
the inductor L4 and the capacitor C11 in the gain power amplification module are connected in parallel to form a filter circuit so as to inhibit other signals from being conducted, the coupler U3 is used for blocking an interference frequency band generated in gain power amplification,
and a triode Q3 in the radio frequency signal control module is used as a contactless switch to receive the instruction of the Bluetooth transmitting module through the Bluetooth receiving module, so that the wireless transmission of the instruction is realized.
According to one aspect of the invention, the radio frequency signal extension unit comprises a diode D5, a resistor R16, an operational amplifier U2, a resistor R17, a resistor R18, an inductor L7, a capacitor C13, a resistor R19, a triode Q4, an inductor L8, a capacitor C15, a trimming capacitor VC1, a capacitor C14 and a resistor R20, wherein one end of the resistor R16 is respectively connected with the cathode end of the diode D5 and the bluetooth receiving end LYJSD; the positive end of the diode D5 is connected with the ground wire GND; the other end of the resistor R16 is respectively connected with one end of a resistor R17 and one end of an operational amplifier U2 pin 6; pin 7 of the operational amplifier U2 is connected with +6V of a power supply; the pin 3 of the operational amplifier U2 is connected with one end of a resistor R18; pin 2 of the operational amplifier U2 is connected with the other end of the resistor R17; the other end of the resistor R18 is respectively connected with one end of an inductor L7 and the positive end of a capacitor C13; the negative end of the capacitor C13 is connected with a ground wire GND; the other end of the inductor L7 is respectively connected with one end of a resistor R19 and a base terminal of a triode Q4; the other end of the resistor R19 is connected with a ground wire GND; the collector terminal of the triode Q4 is respectively connected with one end of an inductor L8, one end of a trimming capacitor VC1, one end of a capacitor C15, one end of a resistor R20 and a Bluetooth output terminal LYSCD; the other end of the inductor L8 is connected with the other end of the trimming capacitor VC1 and one end of the capacitor C14 respectively; the other end of the capacitor C14 is connected with a ground wire GND; the other end of the resistor R20 is connected with a ground wire GND; the emitter terminal of the triode Q4 is respectively connected with the other end of the capacitor C15 and one end of the inductor L9; the other end of the inductor L9 is connected with the ground GND.
According to one aspect of the invention, the power supply module comprises a resistor R1, a diode D1, a capacitor C1, a voltage regulator U5, a capacitor C2 and a battery pack B1, wherein one end of the resistor R1 is connected with +12V of a power supply; the other end of the resistor R1 is connected with the positive end of a diode D1; the negative end of the diode D1 is respectively connected with one end of a capacitor C1 and a pin 1 of a voltage regulator U5; the other end of the capacitor C1 is respectively connected with a pin 2 of a voltage regulator U5, a capacitor C2, a negative electrode end of a battery pack B1, a power supply of-12V and a ground wire GND; and a pin 3 of the voltage regulator U5 is respectively connected with the other end of the capacitor C2 and the positive end of the battery pack B1.
According to one aspect of the invention, the Bluetooth transmitting module comprises a capacitor C3, a switch SB1, a resistor R2, a capacitor C4, a resistor R3, a triode Q1, a resistor R5, a capacitor C6, a capacitor C5, a crystal oscillator tube X1, a resistor R6, an inductor L1, a resistor R7, a capacitor C7 and a triode Q2, wherein the negative terminal of the capacitor C3 is respectively connected with the other terminal of the capacitor C1, a pin 2 of a voltage regulator U5, a capacitor C2, the negative terminal of a battery pack B1, a power supply-12V and a ground line GND; one end of the switch SB1 is respectively connected with a pin 3 of a voltage regulator U5, the other end of the capacitor C2 and the positive end of the battery pack B1; the other end of the switch SB1 is respectively connected with the positive terminal of the capacitor C3, one end of the resistor R2 and one end of the resistor R4; the other end of the resistor R4 is connected with the positive end of the lamp D11; the negative end of the lamp D11 is connected with the ground wire GND; the other end of the resistor R2 is respectively connected with a collector terminal of a triode Q1, one end of a resistor R3, one end of a capacitor C5 and one end of a capacitor C4; the other end of the capacitor C4 is respectively connected with one end of an inductor L1 and the positive end of a capacitor C6; the other end of the capacitor C5 is connected with one end of a resistor R6; the negative end of the capacitor C6 is respectively connected with the emitter end of the triode Q1 and the ground wire GND; the base end of the triode Q1 is respectively connected with the other end of the resistor R3 and one end of the resistor R5; the other end of the resistor R5 is connected with a pin 2 of an X1 crystal oscillator tube; the pin 1 of the crystal oscillator tube X1 is respectively connected with the other end of the resistor R6 and one end of the resistor R7; the other end of the resistor R7 is respectively connected with a base terminal of a triode Q2 and a positive terminal of a capacitor C7; the negative end of the capacitor C7 is connected with a ground wire GND; the collector terminal of the triode Q2 is respectively connected with the other end of the inductor L1 and the emitter terminal T1; the emitter terminal of the triode Q2 is connected with the ground wire GND.
According to one aspect of the invention, the Bluetooth receiving module comprises a switch SB2, a trigger U4, a resistor R12, a resistor R10, a resistor R8, a resistor R9, a capacitor C8, a capacitor C9, a capacitor C10, a resistor R11 and a resistor R13, wherein one end of the switch SB2 is respectively connected with one end of the switch SB1, the pin 3 of a voltage regulator U5, the other end of the capacitor C2 and the positive end of a battery pack B1; the other end of the switch SB2 is connected with pin 6 of the trigger U4; the pin 18 of the trigger U4 is connected with a ground wire GND; the pin 19 of the trigger U4 is connected with one end of a resistor R12; the other end of the resistor R12 is respectively connected with one end of a resistor R10 and one end of a resistor R11; the other end of the resistor R11 is connected with the positive end of the capacitor C10; the negative end of the capacitor C10 is connected with a Bluetooth receiving end LYJSD; the other end of the resistor R10 is connected with a pin 9 of a trigger U4; the pin 4 of the trigger U4 is connected with one end of a resistor R8; the other end of the resistor R8 is connected with the positive end of the capacitor C9; the negative end of the capacitor C9 is respectively connected with one end of the capacitor C8 and a ground wire GND; the other end of the capacitor C8 is respectively connected with one end of a resistor R9 and a pin 7 of a trigger U4; pin 5 of the trigger U4 is connected with one end of a resistor R13; the other end of the resistor R13 is connected with a ground wire GND; the other end of the resistor R9 is connected with a receiving end T2; the pin 13 and the pin 24 of the flip-flop U4 are both connected to the ground GND.
According to one aspect of the invention, the gain power amplification module comprises an inductor L2, a capacitor C11, an inductor L4, an inductor L5, an inductor L3, an operational amplifier U1, a resistor R14 and a coupler U3, wherein a pin 3 of the operational amplifier U1 is respectively connected with a negative terminal of the capacitor C10 and a Bluetooth receiving terminal LYJSD; pin 2 of the operational amplifier U1 is connected with one end of an inductor L3; the other end of the inductor L3 is connected with one end of an inductor L2, one end of a capacitor C11 and one end of an inductor L4 respectively; the other end of the inductor L4 is respectively connected with one end of an inductor L5, the other end of the capacitor C11 and a ground wire GND; the other end of the inductor L5 is connected with +6V of a power supply; the other end of the inductor L2 is connected with a Bluetooth output end LYSCD; pin 7 of the operational amplifier U1 is connected with +9V of a power supply; pin 4 of the operational amplifier U1 is connected with a ground wire GND; pin 6 of the operational amplifier U1 is connected with one end of a resistor R14; the other end of the resistor R14 is connected with a pin 4 of a coupler U3; pin 3 of the coupler U3 is connected with a ground wire GND; pin 2 of the coupler U3 is connected with a power supply of-3.3V; pin 1 of the coupler U3 is connected to + 3.3V.
According to one aspect of the invention, the radio frequency signal control module comprises a diode D2, an inductor L6, a diode D3, a triode Q3, a capacitor C12, a resistor R15 and a diode D4, wherein the positive terminal of the diode D2 is respectively connected with a pin 1 of a coupler U3 and a power supply + 3.3V; the negative end of the diode D2 is respectively connected with the positive end of the diode D3 and one end of the inductor L6; the other end of the inductor L6 is respectively connected with the cathode end of the diode D3 and the base end of the triode Q3; the collector terminal of the triode Q3 is respectively connected with the positive terminal of a diode D4, one terminal of a resistor R15 and the positive terminal of a capacitor C12; the negative end of the capacitor C12 is connected with a ground wire GND; the other end of the resistor R15 is connected with a power supply + 9V; the emitter terminal of the triode Q3 is connected with a ground wire GND; the negative terminal of the diode D4 is connected to the OUTPUT terminal OUTPUT.
According to an aspect of the present invention, the capacitor C3, the capacitor C6, the capacitor C7, the capacitor C9, the capacitor C10, the capacitor C12 and the capacitor C13 are all electrolytic capacitors; the diode D1, the diode D2, the diode D4 and the diode D5 are all voltage-regulator diodes; the model of the transistor Q1, the model of the transistor Q2, the model of the transistor Q3 and the model of the transistor Q4 are NPN; the voltage regulator U5 is SPX1117 in model number; the trigger U4 is SN74AUP1G 74.
According to one aspect of the invention, a radio frequency signal expansion method based on a vehicle parking bluetooth transceiver circuit is characterized in that a radio frequency signal expansion unit receives a switching transmission signal of a bluetooth receiving module, so that the detection range of the bluetooth receiving module is enlarged, and the expanded signal is transferred to a gain power amplification module, so that a weak signal gain effect is realized, and the specific steps are as follows:
step 1, a pin 7 of an operational amplifier U2 is connected with a power supply +6V, so that a radio frequency signal expansion unit is powered on, one end of a resistor R16 obtains a radio frequency signal detected by a Bluetooth receiving module through a Bluetooth receiving end LYJSD, the anode end of a diode D5 is grounded and used for performing voltage stabilization on input voltage and protecting the stability of working voltage of components, the operational amplifier enters a locking state if the gain is not limited due to the fact that the conventional operational amplifier has a gain effect, operational amplification is enabled to enter the locking state, the resistor R17 is connected with the pin U2 in parallel so as to limit the amplification factor of the radio frequency signal, a high-frequency signal generated in the operation of the operational amplifier U2 is canceled through grounding of the cathode end of a capacitor C13, a power supply modulation circuit is formed by connecting an inductor L7 and the resistor R19 in series, and the inductor L7 performs stabilization on;
Has the advantages that: the invention designs a Bluetooth transceiving circuit based on vehicle berth and a radio frequency signal expansion method thereof, the frequency is not high when the radio frequency signals of a Bluetooth transmitting end and a Bluetooth receiving end are transmitted, the energy consumption is lower in the radio frequency signal transmission, but in order to respond in time, the continuous standby operation is needed, the automatic cut-off of the non-operation is realized by arranging a switch SB1 and a switch SB2 at the connection part of the Bluetooth transmitting end and the Bluetooth receiving end and a power supply, and the cut-off switch SB2 supplies the power supply to a Bluetooth receiving module, so that the Bluetooth transmitting module can operate independently to control the operation of other external equipment, thereby reducing the loss; the radio-frequency signal generated at the Bluetooth transmitting end is blocked by an obstacle when being transmitted, so that the Bluetooth receiving module cannot rapidly receive a signal instruction, the tail end of the Bluetooth receiving module is provided with a radio-frequency signal expansion unit and a gain power amplification module, a resistor R17 is connected with a pin of an operational amplifier U2 in parallel to limit the amplification ratio of the radio-frequency signal, and the base terminal of a triode Q4 realizes different conduction paths according to the received parameter values, so that the damaged radio-frequency signal is expanded, and the receiving end rapidly responds; the stability of transmission can not be maintained when the radio frequency signal is transmitted at the Bluetooth transmitting end, and the transmission of the radio frequency signal is maintained and a resonance effect is provided for a circuit through a crystal oscillator tube X1 in the Bluetooth transmitting module, so that the transmission speed is improved; when the Bluetooth receiving module is interfered, the Bluetooth receiving module cannot carry out rapid filtering, and the inductor L4 and the capacitor C11 in the gain power amplifying module are connected in parallel to form a filter circuit, so that the conduction of other signals is inhibited.
Drawings
Fig. 1 is a block diagram of the present invention.
Fig. 2 is a distribution diagram of the vehicle parking bluetooth transceiver circuit of the present invention.
Fig. 3 is a circuit diagram of the bluetooth transmission module of the present invention.
Fig. 4 is a circuit diagram of a gain power amplifying module of the present invention.
Fig. 5 is a circuit diagram of the rf signal expansion unit of the present invention.
Detailed Description
As shown in fig. 1, in this embodiment, a vehicle parking position based bluetooth transceiver circuit includes:
the power supply module is used for supplying the stabilized power supply to the Bluetooth transmitting module and the Bluetooth receiving module, and distributing the other part of the power supply to the battery pack B1 for storage;
the Bluetooth transmitting module is used for generating a radio frequency signal transmitting end by the power supply provided by the power supply module and further providing a radio frequency signal instruction for the Bluetooth receiving module;
the Bluetooth receiving module is used for receiving the radio frequency signal generated by the Bluetooth transmitting module so as to transmit data and complete command control;
the gain power amplification module is used for providing a radio frequency wave band of a high-range detection transmitting signal for the Bluetooth receiving module and enabling a Bluetooth receiving end to receive the signal and respond quickly;
and the radio frequency signal control module is used for controlling the on-off of the signal after the gain power amplification module is adjusted.
In a further embodiment, as shown in fig. 2, a diode D1 in the power module maintains the output voltage value according to the input voltage value, a capacitor C1 eliminates the current surge generated by the voltage regulator U5, and a capacitor C2 provides the start-up power supply for the voltage regulator U5;
a crystal oscillator tube X1 in the Bluetooth transmitting module is used for maintaining the stability of a transmitting end T1 radio frequency signal and the resonance effect in a circuit, and a triode Q2 is used for controlling the on-off of the transmitting end radio frequency signal;
the Bluetooth receiving module obtains the output quality of the Bluetooth transmitting module through a receiving end T2 to realize pairing, and a resistor R3 is grounded to eliminate interference signals received during Bluetooth signal pairing;
the inductor L4 and the capacitor C11 in the gain power amplification module are connected in parallel to form a filter circuit so as to inhibit other signals from being conducted, the coupler U3 is used for blocking an interference frequency band generated in gain power amplification,
and a triode Q3 in the radio frequency signal control module is used as a contactless switch to receive the instruction of the Bluetooth transmitting module through the Bluetooth receiving module, so that the wireless transmission of the instruction is realized.
In a further embodiment, as shown in fig. 5, the rf signal extension unit includes a diode D5, a resistor R16, an operational amplifier U2, a resistor R17, a resistor R18, an inductor L7, a capacitor C13, a resistor R19, a transistor Q4, an inductor L8, a capacitor C15, a trimming capacitor VC1, a capacitor C14, and a resistor R20.
In a further embodiment, one end of the resistor R16 in the rf signal extension unit is connected to the cathode end of the diode D5 and the bluetooth receiving end LYJSD, respectively; the positive end of the diode D5 is connected with the ground wire GND; the other end of the resistor R16 is respectively connected with one end of a resistor R17 and one end of an operational amplifier U2 pin 6; pin 7 of the operational amplifier U2 is connected with +6V of a power supply; the pin 3 of the operational amplifier U2 is connected with one end of a resistor R18; pin 2 of the operational amplifier U2 is connected with the other end of the resistor R17; the other end of the resistor R18 is respectively connected with one end of an inductor L7 and the positive end of a capacitor C13; the negative end of the capacitor C13 is connected with a ground wire GND; the other end of the inductor L7 is respectively connected with one end of a resistor R19 and a base terminal of a triode Q4; the other end of the resistor R19 is connected with a ground wire GND; the collector terminal of the triode Q4 is respectively connected with one end of an inductor L8, one end of a trimming capacitor VC1, one end of a capacitor C15, one end of a resistor R20 and a Bluetooth output terminal LYSCD; the other end of the inductor L8 is connected with the other end of the trimming capacitor VC1 and one end of the capacitor C14 respectively; the other end of the capacitor C14 is connected with a ground wire GND; the other end of the resistor R20 is connected with a ground wire GND; the emitter terminal of the triode Q4 is respectively connected with the other end of the capacitor C15 and one end of the inductor L9; the other end of the inductor L9 is connected with the ground GND.
In a further embodiment, the power module includes a resistor R1, a diode D1, a capacitor C1, a voltage regulator U5, a capacitor C2, and a battery B1.
In a further embodiment, one end of the resistor R1 in the power module is connected to + 12V; the other end of the resistor R1 is connected with the positive end of a diode D1; the negative end of the diode D1 is respectively connected with one end of a capacitor C1 and a pin 1 of a voltage regulator U5; the other end of the capacitor C1 is respectively connected with a pin 2 of a voltage regulator U5, a capacitor C2, a negative electrode end of a battery pack B1, a power supply of-12V and a ground wire GND; and a pin 3 of the voltage regulator U5 is respectively connected with the other end of the capacitor C2 and the positive end of the battery pack B1.
In a further embodiment, as shown in fig. 3, the bluetooth transmitting module includes a capacitor C3, a switch SB1, a resistor R2, a capacitor C4, a resistor R3, a transistor Q1, a resistor R5, a capacitor C6, a capacitor C5, a transistor X1, a resistor R6, an inductor L1, a resistor R7, a capacitor C7, and a transistor Q2.
In a further embodiment, the negative terminal of the capacitor C3 in the bluetooth transmitting module is respectively connected with the other terminal of the capacitor C1, the pin 2 of the voltage regulator U5, the capacitor C2, the negative terminal of the battery B1, the power supply-12V and the ground GND; one end of the switch SB1 is respectively connected with a pin 3 of a voltage regulator U5, the other end of the capacitor C2 and the positive end of the battery pack B1; the other end of the switch SB1 is respectively connected with the positive terminal of the capacitor C3, one end of the resistor R2 and one end of the resistor R4; the other end of the resistor R4 is connected with the positive end of the lamp D11; the negative end of the lamp D11 is connected with the ground wire GND; the other end of the resistor R2 is respectively connected with a collector terminal of a triode Q1, one end of a resistor R3, one end of a capacitor C5 and one end of a capacitor C4; the other end of the capacitor C4 is respectively connected with one end of an inductor L1 and the positive end of a capacitor C6; the other end of the capacitor C5 is connected with one end of a resistor R6; the negative end of the capacitor C6 is respectively connected with the emitter end of the triode Q1 and the ground wire GND; the base end of the triode Q1 is respectively connected with the other end of the resistor R3 and one end of the resistor R5; the other end of the resistor R5 is connected with a pin 2 of an X1 crystal oscillator tube; the pin 1 of the crystal oscillator tube X1 is respectively connected with the other end of the resistor R6 and one end of the resistor R7; the other end of the resistor R7 is respectively connected with a base terminal of a triode Q2 and a positive terminal of a capacitor C7; the negative end of the capacitor C7 is connected with a ground wire GND; the collector terminal of the triode Q2 is respectively connected with the other end of the inductor L1 and the emitter terminal T1; the emitter terminal of the triode Q2 is connected with the ground wire GND.
In a further embodiment, the bluetooth receiving module comprises a switch SB2, a flip-flop U4, a resistor R12, a resistor R10, a resistor R8, a resistor R9, a capacitor C8, a capacitor C9, a capacitor C10, a resistor R11 and a resistor R13.
In a further embodiment, one end of the switch SB2 in the bluetooth receiving module is connected to one end of a switch SB1, the pin 3 of the voltage regulator U5, the other end of the capacitor C2, and the positive terminal of the battery B1; the other end of the switch SB2 is connected with pin 6 of the trigger U4; the pin 18 of the trigger U4 is connected with a ground wire GND; the pin 19 of the trigger U4 is connected with one end of a resistor R12; the other end of the resistor R12 is respectively connected with one end of a resistor R10 and one end of a resistor R11; the other end of the resistor R11 is connected with the positive end of the capacitor C10; the negative end of the capacitor C10 is connected with a Bluetooth receiving end LYJSD; the other end of the resistor R10 is connected with a pin 9 of a trigger U4; the pin 4 of the trigger U4 is connected with one end of a resistor R8; the other end of the resistor R8 is connected with the positive end of the capacitor C9; the negative end of the capacitor C9 is respectively connected with one end of the capacitor C8 and a ground wire GND; the other end of the capacitor C8 is respectively connected with one end of a resistor R9 and a pin 7 of a trigger U4; pin 5 of the trigger U4 is connected with one end of a resistor R13; the other end of the resistor R13 is connected with a ground wire GND; the other end of the resistor R9 is connected with a receiving end T2; the pin 13 and the pin 24 of the flip-flop U4 are both connected to the ground GND.
In a further embodiment, as shown in fig. 4, the gain power amplifying module includes an inductor L2, a capacitor C11, an inductor L4, an inductor L5, an inductor L3, an operational amplifier U1, a resistor R14, and a coupler U3.
In a further embodiment, pin 3 of the operational amplifier U1 in the gain power amplifying module is connected to the negative terminal of the capacitor C10 and the bluetooth receiving terminal LYJSD, respectively; pin 2 of the operational amplifier U1 is connected with one end of an inductor L3; the other end of the inductor L3 is connected with one end of an inductor L2, one end of a capacitor C11 and one end of an inductor L4 respectively; the other end of the inductor L4 is respectively connected with one end of an inductor L5, the other end of the capacitor C11 and a ground wire GND; the other end of the inductor L5 is connected with +6V of a power supply; the other end of the inductor L2 is connected with a Bluetooth output end LYSCD; pin 7 of the operational amplifier U1 is connected with +9V of a power supply; pin 4 of the operational amplifier U1 is connected with a ground wire GND; pin 6 of the operational amplifier U1 is connected with one end of a resistor R14; the other end of the resistor R14 is connected with a pin 4 of a coupler U3; pin 3 of the coupler U3 is connected with a ground wire GND; pin 2 of the coupler U3 is connected with a power supply of-3.3V; pin 1 of the coupler U3 is connected to + 3.3V.
In a further embodiment, the radio frequency signal control module includes a diode D2, an inductor L6, a diode D3, a transistor Q3, a capacitor C12, a resistor R15, and a diode D4.
In a further embodiment, the positive terminal of the diode D2 in the rf signal control module is respectively connected to pin 1 of the coupler U3 and the power supply + 3.3V; the negative end of the diode D2 is respectively connected with the positive end of the diode D3 and one end of the inductor L6; the other end of the inductor L6 is respectively connected with the cathode end of the diode D3 and the base end of the triode Q3; the collector terminal of the triode Q3 is respectively connected with the positive terminal of a diode D4, one terminal of a resistor R15 and the positive terminal of a capacitor C12; the negative end of the capacitor C12 is connected with a ground wire GND; the other end of the resistor R15 is connected with a power supply + 9V; the emitter terminal of the triode Q3 is connected with a ground wire GND; the negative terminal of the diode D4 is connected to the OUTPUT terminal OUTPUT.
In a further embodiment, the capacitor C3, the capacitor C6, the capacitor C7, the capacitor C9, the capacitor C10, the capacitor C12 and the capacitor C13 are all electrolytic capacitors; the diode D1, the diode D2, the diode D4 and the diode D5 are all voltage-regulator diodes; the model of the transistor Q1, the model of the transistor Q2, the model of the transistor Q3 and the model of the transistor Q4 are NPN; the voltage regulator U5 is SPX1117 in model number; the trigger U4 is SN74AUP1G 74.
In a further embodiment, a radio frequency signal extension method based on a vehicle parking bluetooth transceiver circuit is characterized in that a radio frequency signal extension unit receives a bluetooth receiving module to convert a transmission signal, so as to increase the detection range of the bluetooth receiving module, and further transfers the extended signal to a gain power amplification module, thereby realizing a weak signal gain effect, and the specific steps are as follows:
step 1, a pin 7 of an operational amplifier U2 is connected with a power supply +6V, so that a radio frequency signal expansion unit is powered on, one end of a resistor R16 obtains a radio frequency signal detected by a Bluetooth receiving module through a Bluetooth receiving end LYJSD, the anode end of a diode D5 is grounded and used for performing voltage stabilization on input voltage and protecting the stability of working voltage of components, the operational amplifier enters a locking state if the gain is not limited due to the fact that the conventional operational amplifier has a gain effect, operational amplification is enabled to enter the locking state, the resistor R17 is connected with the pin U2 in parallel so as to limit the amplification factor of the radio frequency signal, a high-frequency signal generated in the operation of the operational amplifier U2 is canceled through grounding of the cathode end of a capacitor C13, a power supply modulation circuit is formed by connecting an inductor L7 and the resistor R19 in series, and the inductor L7 performs stabilization on;
In summary, the present invention has the following advantages: one end of the resistor R1 is connected with a power supply to be connected in series in the circuit, so that the output voltage value is reduced, the diode D1 keeps the stability of the output voltage value according to the input voltage value, the capacitor C1 eliminates the current impact generated by the voltage regulator U5, and the capacitor C2 provides a starting operation power supply for the voltage regulator U5; when the switch SB1 is closed, the capacitor C3 is electrified, the lamp D11 is lighted to display that the power supply voltage of the module is normal, the capacitor C3 and the resistor R2 are connected in series to absorb the peak voltage generated when the battery B1 is transmitted, the capacitor C4 stores the obtained electric energy, so that stable output voltage is provided for the module, the triode Q1 repairs damaged signals, the crystal oscillator tube X1 plays a role in maintaining the stability of radio-frequency signals of the transmitting end T1 and the resonance effect in the circuit, and the triode Q2 controls the on-off of the radio-frequency signals of the transmitting end; the switch SB2 is closed to enable the Bluetooth receiving module to be electrified, the acquired voltage is distributed through the trigger U4, so that the radio frequency signal of the transmitting terminal T1 is acquired through the receiving terminal T2, the resistor R11 and the capacitor C10 are connected in series to inhibit the oscillation of the circuit, the influence on the operation of other devices is avoided, the receiving terminal T2 acquires the output quality of the Bluetooth transmitting module to further realize pairing, and the resistor R3 is grounded to eliminate the interference signal received when the Bluetooth signal is paired; inductor L4 and electric capacity C11 connect in parallel and constitute filter circuit thereby restrain other signal conduction, and coupler U3 is used for hindering the interference frequency channel that produces in the gain power amplification, and triode Q3 is contactless switch and is received the bluetooth emission module instruction through bluetooth receiving module, and electric capacity C12 one end ground connection eliminates the high frequency signal end that produces to realize the wireless transmission instruction and reach the signal extension effect.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.
Claims (9)
1. A Bluetooth transceiving circuit based on vehicle berthing is characterized by comprising the following modules:
the power supply module is used for supplying the stabilized power supply to the Bluetooth transmitting module and the Bluetooth receiving module, and distributing the other part of the power supply to the battery pack B1 for storage;
the Bluetooth transmitting module is used for generating a radio frequency signal transmitting end by the power supply provided by the power supply module and further providing a radio frequency signal instruction for the Bluetooth receiving module;
the Bluetooth receiving module is used for receiving the radio frequency signal generated by the Bluetooth transmitting module so as to transmit data and complete command control;
the gain power amplification module is used for providing a radio frequency wave band of a high-range detection transmitting signal for the Bluetooth receiving module and enabling a Bluetooth receiving end to receive the signal and respond quickly;
and the radio frequency signal control module is used for controlling the on-off of the signal after the gain power amplification module is adjusted.
2. The vehicle-berth-based bluetooth transceiver circuit of claim 1, wherein a diode D1 in the power module keeps an output voltage value stable according to an input voltage value, a capacitor C1 eliminates a current surge generated by a voltage regulator U5, and a capacitor C2 provides a starting operation power supply for the voltage regulator U5;
a crystal oscillator tube X1 in the Bluetooth transmitting module is used for maintaining the stability of a transmitting end T1 radio frequency signal and the resonance effect in a circuit, and a triode Q2 is used for controlling the on-off of the transmitting end radio frequency signal;
the Bluetooth receiving module obtains the output quality of the Bluetooth transmitting module through a receiving end T2 to realize pairing, and a resistor R3 is grounded to eliminate interference signals received during Bluetooth signal pairing;
the inductor L4 and the capacitor C11 in the gain power amplification module are connected in parallel to form a filter circuit so as to inhibit other signals from being conducted, the coupler U3 is used for blocking an interference frequency band generated in gain power amplification,
and a triode Q3 in the radio frequency signal control module is used as a contactless switch to receive the instruction of the Bluetooth transmitting module through the Bluetooth receiving module, so that the wireless transmission of the instruction is realized.
3. The vehicle-berth-based bluetooth transceiver circuit of claim 1, wherein the gain power amplification module comprises: a radio frequency signal expansion unit; the radio frequency signal expansion unit comprises a diode D5, a resistor R16, an operational amplifier U2, a resistor R17, a resistor R18, an inductor L7, a capacitor C13, a resistor R19, a triode Q4, an inductor L8, a capacitor C15, a trimming capacitor VC1, a capacitor C14 and a resistor R20, wherein one end of the resistor R16 is connected with the negative end of the diode D5 and the Bluetooth receiving end LYJSD respectively; the positive end of the diode D5 is connected with the ground wire GND; the other end of the resistor R16 is respectively connected with one end of a resistor R17 and one end of an operational amplifier U2 pin 6; pin 7 of the operational amplifier U2 is connected with +6V of a power supply; the pin 3 of the operational amplifier U2 is connected with one end of a resistor R18; pin 2 of the operational amplifier U2 is connected with the other end of the resistor R17; the other end of the resistor R18 is respectively connected with one end of an inductor L7 and the positive end of a capacitor C13; the negative end of the capacitor C13 is connected with a ground wire GND; the other end of the inductor L7 is respectively connected with one end of a resistor R19 and a base terminal of a triode Q4; the other end of the resistor R19 is connected with a ground wire GND; the collector terminal of the triode Q4 is respectively connected with one end of an inductor L8, one end of a trimming capacitor VC1, one end of a capacitor C15, one end of a resistor R20 and a Bluetooth output terminal LYSCD; the other end of the inductor L8 is connected with the other end of the trimming capacitor VC1 and one end of the capacitor C14 respectively; the other end of the capacitor C14 is connected with a ground wire GND; the other end of the resistor R20 is connected with a ground wire GND; the emitter terminal of the triode Q4 is respectively connected with the other end of the capacitor C15 and one end of the inductor L9; the other end of the inductor L9 is connected with the ground GND.
4. The vehicle-berth-based Bluetooth transceiver circuit of claim 1, wherein the power module comprises a resistor R1, a diode D1, a capacitor C1, a voltage regulator U5, a capacitor C2 and a battery pack B1, wherein one end of the resistor R1 is connected with a power supply + 12V; the other end of the resistor R1 is connected with the positive end of a diode D1; the negative end of the diode D1 is respectively connected with one end of a capacitor C1 and a pin 1 of a voltage regulator U5; the other end of the capacitor C1 is respectively connected with a pin 2 of a voltage regulator U5, a capacitor C2, a negative electrode end of a battery pack B1, a power supply of-12V and a ground wire GND; and a pin 3 of the voltage regulator U5 is respectively connected with the other end of the capacitor C2 and the positive end of the battery pack B1.
5. The vehicle-berth-based Bluetooth transceiving circuit according to claim 1, wherein the Bluetooth transmitting module comprises a capacitor C3, a switch SB1, a resistor R2, a capacitor C4, a resistor R3, a transistor Q1, a resistor R5, a capacitor C6, a capacitor C5, a crystal oscillator tube X1, a resistor R6, an inductor L1, a resistor R7, a capacitor C7 and a transistor Q2, wherein the negative end of the capacitor C3 is respectively connected with the other end of the capacitor C1, a pin 2 of a voltage regulator U5, a capacitor C2, a negative end of a battery B1, a power supply-12V and a ground GND; one end of the switch SB1 is respectively connected with a pin 3 of a voltage regulator U5, the other end of the capacitor C2 and the positive end of the battery pack B1; the other end of the switch SB1 is respectively connected with the positive terminal of the capacitor C3, one end of the resistor R2 and one end of the resistor R4; the other end of the resistor R4 is connected with the positive end of the lamp D11; the negative end of the lamp D11 is connected with the ground wire GND; the other end of the resistor R2 is respectively connected with a collector terminal of a triode Q1, one end of a resistor R3, one end of a capacitor C5 and one end of a capacitor C4; the other end of the capacitor C4 is respectively connected with one end of an inductor L1 and the positive end of a capacitor C6; the other end of the capacitor C5 is connected with one end of a resistor R6; the negative end of the capacitor C6 is respectively connected with the emitter end of the triode Q1 and the ground wire GND; the base end of the triode Q1 is respectively connected with the other end of the resistor R3 and one end of the resistor R5; the other end of the resistor R5 is connected with a pin 2 of an X1 crystal oscillator tube; the pin 1 of the crystal oscillator tube X1 is respectively connected with the other end of the resistor R6 and one end of the resistor R7; the other end of the resistor R7 is respectively connected with a base terminal of a triode Q2 and a positive terminal of a capacitor C7; the negative end of the capacitor C7 is connected with a ground wire GND; the collector terminal of the triode Q2 is respectively connected with the other end of the inductor L1 and the emitter terminal T1; the emitter terminal of the triode Q2 is connected with the ground wire GND.
6. The vehicle-berth-based Bluetooth transceiving circuit according to claim 1, wherein the Bluetooth receiving module comprises a switch SB2, a trigger U4, a resistor R12, a resistor R10, a resistor R8, a resistor R9, a capacitor C8, a capacitor C9, a capacitor C10, a resistor R11 and a resistor R13, wherein one end of the switch SB2 is connected with one end of the switch SB1, the pin 3 of the voltage regulator U5, the other end of the capacitor C2 and the positive end of the battery B1 respectively; the other end of the switch SB2 is connected with pin 6 of the trigger U4; the pin 18 of the trigger U4 is connected with a ground wire GND; the pin 19 of the trigger U4 is connected with one end of a resistor R12; the other end of the resistor R12 is respectively connected with one end of a resistor R10 and one end of a resistor R11; the other end of the resistor R11 is connected with the positive end of the capacitor C10; the negative end of the capacitor C10 is connected with a Bluetooth receiving end LYJSD; the other end of the resistor R10 is connected with a pin 9 of a trigger U4; the pin 4 of the trigger U4 is connected with one end of a resistor R8; the other end of the resistor R8 is connected with the positive end of the capacitor C9; the negative end of the capacitor C9 is respectively connected with one end of the capacitor C8 and a ground wire GND; the other end of the capacitor C8 is respectively connected with one end of a resistor R9 and a pin 7 of a trigger U4; pin 5 of the trigger U4 is connected with one end of a resistor R13; the other end of the resistor R13 is connected with a ground wire GND; the other end of the resistor R9 is connected with a receiving end T2; the pin 13 and the pin 24 of the flip-flop U4 are both connected to the ground GND.
7. The vehicle-berth-based Bluetooth transceiver circuit of claim 1, wherein the gain power amplification module comprises an inductor L2, a capacitor C11, an inductor L4, an inductor L5, an inductor L3, an operational amplifier U1, a resistor R14 and a coupler U3, wherein pin 3 of the operational amplifier U1 is respectively connected with a negative terminal of a capacitor C10 and a Bluetooth LYJSD receiving terminal; pin 2 of the operational amplifier U1 is connected with one end of an inductor L3; the other end of the inductor L3 is connected with one end of an inductor L2, one end of a capacitor C11 and one end of an inductor L4 respectively; the other end of the inductor L4 is respectively connected with one end of an inductor L5, the other end of the capacitor C11 and a ground wire GND; the other end of the inductor L5 is connected with +6V of a power supply; the other end of the inductor L2 is connected with a Bluetooth output end LYSCD; pin 7 of the operational amplifier U1 is connected with +9V of a power supply; pin 4 of the operational amplifier U1 is connected with a ground wire GND; pin 6 of the operational amplifier U1 is connected with one end of a resistor R14; the other end of the resistor R14 is connected with a pin 4 of a coupler U3; pin 3 of the coupler U3 is connected with a ground wire GND; pin 2 of the coupler U3 is connected with a power supply of-3.3V; pin 1 of the coupler U3 is connected to + 3.3V.
8. The vehicle-berth-based Bluetooth transceiver circuit of claim 7, wherein the radio frequency signal control module comprises a diode D2, an inductor L6, a diode D3, a triode Q3, a capacitor C12, a resistor R15 and a diode D4, wherein the positive terminal of the diode D2 is respectively connected with a pin 1 of a coupler U3 and a power supply + 3.3V; the negative end of the diode D2 is respectively connected with the positive end of the diode D3 and one end of the inductor L6; the other end of the inductor L6 is respectively connected with the cathode end of the diode D3 and the base end of the triode Q3; the collector terminal of the triode Q3 is respectively connected with the positive terminal of a diode D4, one terminal of a resistor R15 and the positive terminal of a capacitor C12; the negative end of the capacitor C12 is connected with a ground wire GND; the other end of the resistor R15 is connected with a power supply + 9V; the emitter terminal of the triode Q3 is connected with a ground wire GND; the negative terminal of the diode D4 is connected to the OUTPUT terminal OUTPUT.
9. The radio frequency signal expansion method based on the vehicle parking position bluetooth transceiving circuit according to claim 3, wherein the radio frequency signal expansion unit receives a bluetooth receiving module to convert a transmission signal, so as to increase a detection range of the bluetooth receiving module, and further transfers the expanded signal to a gain power amplification module, thereby realizing a weak signal gain effect, and the specific steps are as follows:
step 1, a pin 7 of an operational amplifier U2 is connected with a power supply +6V, so that a radio frequency signal expansion unit is powered on, one end of a resistor R16 obtains a radio frequency signal detected by a Bluetooth receiving module through a Bluetooth receiving end LYJSD, the anode end of a diode D5 is grounded and used for performing voltage stabilization on input voltage and protecting the stability of working voltage of components, the operational amplifier enters a locking state if the gain is not limited due to the fact that the conventional operational amplifier has a gain effect, operational amplification is enabled to enter the locking state, the resistor R17 is connected with the pin U2 in parallel so as to limit the amplification factor of the radio frequency signal, a high-frequency signal generated in the operation of the operational amplifier U2 is canceled through grounding of the cathode end of a capacitor C13, a power supply modulation circuit is formed by connecting an inductor L7 and the resistor R19 in series, and the inductor L7 performs stabilization on;
step 2, the grounding function of one end of the resistor R19 is a protection measure for preventing the electronic components from being affected by the outside, different conduction paths are realized at the base end of the triode Q4 according to received parameter values, further damaged radio frequency signals are expanded to meet output requirements, the grounding function of one end of the inductor L9 is used for realizing high-frequency filtering, the radio frequency signals led out through the emitter end of the triode Q4 are stored by the capacitor C15, further the output quality after operation is maintained, the radio frequency signals fed back by the base end of the triode Q4 are received in parallel through the fine tuning capacitor VC1 and the inductor L8, further a certain radio frequency band signal is blocked by the capacitor C14, and standard radio frequency signals are allowed to pass through.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010327445.6A CN111555779A (en) | 2020-04-23 | 2020-04-23 | Bluetooth transceiving circuit based on vehicle parking and radio frequency signal expansion method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010327445.6A CN111555779A (en) | 2020-04-23 | 2020-04-23 | Bluetooth transceiving circuit based on vehicle parking and radio frequency signal expansion method thereof |
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| CN111555779A true CN111555779A (en) | 2020-08-18 |
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| CN202010327445.6A Withdrawn CN111555779A (en) | 2020-04-23 | 2020-04-23 | Bluetooth transceiving circuit based on vehicle parking and radio frequency signal expansion method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115037325A (en) * | 2022-04-29 | 2022-09-09 | 立讯电子科技（昆山）有限公司 | Radio frequency transceiving component, radio frequency signal transceiving method and electronic equipment |
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2020
- 2020-04-23 CN CN202010327445.6A patent/CN111555779A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115037325A (en) * | 2022-04-29 | 2022-09-09 | 立讯电子科技（昆山）有限公司 | Radio frequency transceiving component, radio frequency signal transceiving method and electronic equipment |
| CN115037325B (en) * | 2022-04-29 | 2023-11-28 | 立讯电子科技（昆山）有限公司 | Radio frequency receiving and transmitting assembly, radio frequency signal receiving and transmitting method and electronic equipment |
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Application publication date: 20200818 |