CN112911561A - Wireless Bluetooth communication device and method for live working site - Google Patents
Wireless Bluetooth communication device and method for live working site Download PDFInfo
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- CN112911561A CN112911561A CN202110081959.2A CN202110081959A CN112911561A CN 112911561 A CN112911561 A CN 112911561A CN 202110081959 A CN202110081959 A CN 202110081959A CN 112911561 A CN112911561 A CN 112911561A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
- H04L45/124—Shortest path evaluation using a combination of metrics
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
- H04W40/248—Connectivity information update
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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Abstract
The invention belongs to the field of communication, and particularly relates to a wireless Bluetooth communication device and a wireless Bluetooth communication method for a live-wire work site, wherein the wireless Bluetooth communication device comprises the following steps: the Bluetooth signal repeater is used for receiving, amplifying and forwarding Bluetooth signals and the Bluetooth headset is used for receiving and sending the Bluetooth signals through the Bluetooth signal repeater in a matched connection manner; the Bluetooth signal repeater comprises a Bluetooth receiving module, a control module and a Bluetooth sending module, wherein the Bluetooth receiving module is connected with the Bluetooth headset in a matching mode to receive Bluetooth signals, the control module is connected with the Bluetooth receiving module to amplify and control on/off of the Bluetooth signals, and the Bluetooth sending module is connected with the Bluetooth headset in a matching mode to send the Bluetooth signals. The technical scheme adopted by the invention has the following beneficial effects: the Bluetooth signal repeater is used for receiving, amplifying and forwarding the Bluetooth signals, so that the transmission distance of the Bluetooth signals is greatly increased on the premise of ensuring the stability of Bluetooth communication, and the requirement of remote voice communication of extra/extra-high voltage line operators is met.
Description
Technical Field
The invention belongs to the field of communication, and particularly relates to a wireless Bluetooth communication device and a wireless Bluetooth communication method for a live-wire work site.
Background
Because the voltage level of the ultra/extra-high voltage line is high, in order to meet the electrical insulation requirement, the size of a tower head of the ultra/extra-high voltage line is large, the distance between an equipotential operator and ground personnel can exceed 100 meters, the operator and the ground personnel exchange the electricity in a shouting way at present, the corona discharge of the ultra/extra-high voltage line is strong, the generated discharge sound is large, the wireless communication technical means under the strong electromagnetic field environment is deficient, and the signal transmission distance of a conventional wireless communication earphone is far less than 100 meters, so that the operator cannot smoothly exchange with the outside, the earphone is in a lone army deep state, and the safety of the personnel and the smooth development of defect elimination operation are difficult to guarantee.
Disclosure of Invention
In order to solve the technical problems, the invention provides a wireless Bluetooth communication device and a wireless Bluetooth communication method for a live working site, which realize long-distance multipoint real-time voice communication and greatly improve the safety and the working efficiency of operation.
In a first aspect, an embodiment of the present invention provides a wireless bluetooth communication device for a live-line work site, including:
the Bluetooth signal repeater is used for receiving, amplifying and forwarding Bluetooth signals and the Bluetooth headset is used for receiving and sending the Bluetooth signals through the Bluetooth signal repeater in a matched connection manner;
the Bluetooth signal repeater comprises a Bluetooth receiving module, a control module and a Bluetooth sending module, wherein the Bluetooth receiving module is connected with the Bluetooth headset in a matching mode to receive Bluetooth signals, the control module is connected with the Bluetooth receiving module to amplify and control on/off of the Bluetooth signals, and the Bluetooth sending module is connected with the Bluetooth headset in a matching mode to send the Bluetooth signals.
Preferably, the control module includes a filter circuit connected to the bluetooth receiving module, a first signal amplifying circuit connected to the filter circuit and used for amplifying the bluetooth signal, and a second signal amplifying circuit connected to the first signal amplifying circuit and used for further amplifying the bluetooth signal.
Preferably, the filter circuit includes capacitors C1, C2, resistors R1, R2, capacitors C7, C8, the capacitor C1, one end of the capacitor C1 is connected to the first output terminal of the bluetooth receiving module, the other end of the capacitor C1 is connected to one end of the resistor R1, one end of the capacitor C7, and the first signal amplifying circuit, the other end of the resistor R1 is connected to the common ground and one end of the resistor R2, the other end of the capacitor C7 is connected to the common ground and one end of the capacitor C8, the other end of the resistor R2 and the other end of the capacitor C8 are connected to one end of the capacitor C2 and the first signal amplifying circuit, and the other end of the capacitor C2 is connected to the second output terminal of the bluetooth receiving module.
Preferably, the first signal amplifying circuit comprises resistors R3, R4, R5, R6, capacitors C3, C4 and amplifiers U1A and U1B, wherein a non-inverting input terminal of the amplifier U1A is connected with the filter circuit, an inverting input terminal of the amplifier U1A is connected with one end of the resistor R3 and one end of the resistor R5, the other end of the resistor R3 is connected with the capacitor C3 in series and then connected with the common ground, and the other end of the resistor R5 is connected with an output terminal of the amplifier U1A and the second signal amplifying circuit; the non-inverting input end of the amplifier U1B is connected with the filter circuit, the inverting input end of the amplifier U1B is connected with one end of a resistor R4 and one end of a resistor R6, the other end of the resistor R4 is connected with a capacitor C4 in series and then connected with a common ground, and the other end of the resistor R6 is connected with the output end of the amplifier U1B and the second signal amplifying circuit.
Preferably, the second signal amplifying circuit includes amplifiers U2A, U2B, capacitors C15, C16, C17, C18, C19, C20, C21, C22, C23, C24, C25, C26, C27, C28, and resistors R7, R8, R9, R10, R17, R18, R19, R20, R21, R22,
a positive phase input end of the amplifier U2A is connected with one end of a capacitor C21 and one end of a resistor R7, the other end of the capacitor C21 is connected with a first signal amplifying circuit, the other end of the resistor R7 is connected with a common ground, an inverting input end of the amplifier U2A is connected with one end of a resistor R17 and one end of a resistor R9, the other end of the R17 is connected with a capacitor C23 in series and then connected with a common ground, the other end of the resistor R9 is connected with an output end of the amplifier U2A and a bluetooth transmitting module, a positive phase control end of the amplifier U2A is connected with a power supply end and one end of a capacitor C16 and one end of a capacitor C26, the other end of the capacitor C16 and the other end of a capacitor C26 are connected with a common ground, an inverting control end of the amplifier U2A is connected with a power supply end and one end of a capacitor C15 and one end of a capacitor C25, and;
the amplifier U2B has a positive phase input end connected to one end of a capacitor C22 and one end of a resistor R8, the capacitor C22 has another end connected to a first signal amplifying circuit, the resistor R8 has another end connected to a common ground, the amplifier U2B has an opposite phase input end connected to one end of a resistor R18 and one end of a resistor R10, the R18 has another end connected to a capacitor C24 in series and then connected to a common ground, the resistor R10 has another end connected to the output end of the amplifier U2B and the bluetooth transmitting module, the amplifier U2B has a positive phase control end connected to a power supply terminal and one end of a capacitor C18 and one end of a capacitor C28, the capacitor C18 and another end of a capacitor C28 are connected to a common ground, the amplifier U2B has an opposite phase control end connected to a power supply terminal and one end of a capacitor C17 and one end of a capacitor C27, and the capacitor C17 and another end of a capacitor C27 are.
The technical scheme adopted by the invention has the following beneficial effects:
1. compare the mode of communication between bluetooth module, increased bluetooth signal repeater in this embodiment, bluetooth signal repeater is used for the receipt of bluetooth signal, enlargies, forwardding to under the prerequisite of guaranteeing bluetooth communication stability, promoted bluetooth signal transmission distance greatly, guaranteed the demand of the long-distance voice communication of super/extra-high voltage line operation personnel.
2. The filter circuit carries out filtering processing on the Bluetooth signals so as to improve the tone quality of the converted sound signals. The first signal amplifying circuit and the second signal amplifying circuit amplify the Bluetooth signals, so that the transmission distance of the Bluetooth signals is increased.
In a second aspect, an embodiment of the present invention provides a wireless bluetooth communication method for a hot-line work site, which is applied to a wireless bluetooth communication device for a hot-line work site, and includes:
when the Bluetooth receiving module receives the switching instruction, the instruction is transmitted to the control module for route inquiry, and the corresponding Bluetooth signal repeater is selected according to the route inquiry result to be switched through the Bluetooth sending module.
Preferably, the method further comprises the following steps: and establishing a routing table, wherein the routing table comprises distance information and signal strength information, and the control module carries out routing query through the routing table.
Preferably, the control module performs corresponding calculation according to the distance information and the signal strength information, and updates the routing table.
Preferably, the transmitting the instruction to the control module for route query, and selecting the corresponding bluetooth signal repeater according to the route query result for transfer through the bluetooth sending module includes:
and transmitting the command to a control module for route inquiry, calculating to obtain the weight of the Bluetooth signal repeater, selecting the Bluetooth signal repeater with the maximum weight, and switching through a Bluetooth sending module.
Preferably, if the bluetooth signal repeater with the largest weight cannot jump, the bluetooth signal repeater with the second largest weight is selected to jump; if still fails, the initial state is returned.
The technical scheme adopted by the invention has the following beneficial effects:
1. and selecting the most suitable Bluetooth signal repeater through route inquiry, and switching through the Bluetooth sending module so as to ensure the switching conversation quality.
2. And the control module performs corresponding calculation according to the distance information and the signal strength information and updates the routing table so as to ensure the accuracy of the current information.
The following detailed description of the present invention will be provided in conjunction with the accompanying drawings.
Drawings
The invention is further described with reference to the accompanying drawings and the detailed description below:
fig. 1 is a schematic system diagram of a wireless bluetooth communication device for a live working site according to the present invention;
FIG. 2 is a schematic structural diagram of a control module in a wireless Bluetooth communication device for a live working site according to the present invention;
fig. 3 is a circuit diagram of a filter circuit and a first signal amplifying circuit in a wireless bluetooth communication device for a live working site according to the present invention;
fig. 4 is a circuit diagram of a second signal amplifying circuit in a wireless bluetooth communication device for a live working site according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, a wireless bluetooth communication device for a live working site includes: the Bluetooth signal repeater is used for receiving, amplifying and forwarding Bluetooth signals and the Bluetooth headset is used for receiving and sending the Bluetooth signals through the Bluetooth signal repeater in a matched connection manner; the Bluetooth signal repeater comprises a Bluetooth receiving module, a control module and a Bluetooth sending module, wherein the Bluetooth receiving module is connected with the Bluetooth headset in a matching mode to receive Bluetooth signals, the control module is connected with the Bluetooth receiving module to amplify and control on/off of the Bluetooth signals, and the Bluetooth sending module is connected with the Bluetooth headset in a matching mode to send the Bluetooth signals.
Compare the mode of communication between bluetooth module, increased bluetooth signal repeater in this embodiment, bluetooth signal repeater is used for the receipt of bluetooth signal, enlargies, forwardding to under the prerequisite of guaranteeing bluetooth communication stability, promoted bluetooth signal transmission distance greatly, guaranteed the demand of the long-distance voice communication of super/extra-high voltage line operation personnel.
In this embodiment, as shown in fig. 2, the control module includes a filter circuit connected to the bluetooth receiving module, a first signal amplifying circuit connected to the filter circuit for amplifying bluetooth signals, and a second signal amplifying circuit connected to the first signal amplifying circuit for further amplifying bluetooth signals.
The filter circuit carries out filtering processing on the Bluetooth signals so as to improve the tone quality of the converted sound signals. The first signal amplifying circuit and the second signal amplifying circuit amplify the Bluetooth signals, so that the transmission distance of the Bluetooth signals is increased.
Specifically, as shown in fig. 3, the filter circuit includes capacitors C1, C2, resistors R1, R2, capacitors C7, and C8, the capacitor C1 is connected to one end of the capacitor C1, one end of a resistor R1, one end of a capacitor C7, and a first signal amplifier circuit are connected to the other end of the capacitor C1, the other end of the resistor R1 is connected to the common ground and one end of the resistor R2, the other end of the capacitor C7 is connected to the common ground and one end of the capacitor C8, the other ends of the resistor R2 and the capacitor C8 are connected to one end of the capacitor C2 and the first signal amplifier circuit, and the other end of the capacitor C2 is connected to the second output terminal of the bluetooth receiving module.
The capacitors C7 and C8 are used to filter out high frequency noise while improving TIM distortion.
Specifically, as shown in fig. 3, the first signal amplifying circuit includes resistors R3, R4, R5, R6, capacitors C3, C4, and amplifiers U1A and U1B, a non-inverting input terminal of the amplifier U1A is connected to the filter circuit, an inverting input terminal of the amplifier U1A is connected to one end of the resistor R3 and one end of the resistor R5, the other end of the resistor R3 is connected in series with the capacitor C3 and then to the common ground, and the other end of the resistor R5 is connected to the output terminal of the amplifier U1A and the second signal amplifying circuit; the non-inverting input end of the amplifier U1B is connected with the filter circuit, the inverting input end of the amplifier U1B is connected with one end of a resistor R4 and one end of a resistor R6, the other end of the resistor R4 is connected with a capacitor C4 in series and then connected with a common ground, and the other end of the resistor R6 is connected with the output end of the amplifier U1B and the second signal amplifying circuit.
The first signal amplifying circuit adopts a voltage series negative feedback mode and has the characteristics of high input impedance and stable output current. The resistor R3 is used for setting DC bias, and the capacitor C3 provides a high-low frequency AC path for the resistor R3, mainly for improving high pitch. The lower limit frequency of the amplifier U1A is determined by the capacitor C1 and the resistor R1. The resistors R3 and R5 determine the voltage amplification factor of the first signal amplifying circuit.
Specifically, as shown in fig. 4, the second signal amplifying circuit includes an amplifier U2, a capacitor C, and a resistor R, the non-inverting input terminal of the amplifier U2 is connected to one end of the capacitor C and one end of the resistor R, the other end of the capacitor C is connected to the first signal amplifying circuit, the other end of the resistor R is connected to a common ground, the inverting input terminal of the amplifier U2 is connected to one end of the resistor R and one end of the resistor R, the other end of R is connected to the common ground after being connected to the capacitor C in series, the other end of the resistor R is connected to the output terminal of the amplifier U2 and the bluetooth transmitting module, the non-inverting control terminal of the amplifier U2 is connected to a power supply terminal and one end of the capacitor C, the other end of the capacitor C and the other end of, the inverting control end of the amplifier U2A is connected with a power supply end, one end of a capacitor C15 and one end of a capacitor C25, and the other end of the capacitor C15 and the other end of the capacitor C25 are connected with a common ground; the amplifier U2B has a positive phase input end connected to one end of a capacitor C22 and one end of a resistor R8, the capacitor C22 has another end connected to a first signal amplifying circuit, the resistor R8 has another end connected to a common ground, the amplifier U2B has an opposite phase input end connected to one end of a resistor R18 and one end of a resistor R10, the R18 has another end connected to a capacitor C24 in series and then connected to a common ground, the resistor R10 has another end connected to the output end of the amplifier U2B and the bluetooth transmitting module, the amplifier U2B has a positive phase control end connected to a power supply terminal and one end of a capacitor C18 and one end of a capacitor C28, the capacitor C18 and another end of a capacitor C28 are connected to a common ground, the amplifier U2B has an opposite phase control end connected to a power supply terminal and one end of a capacitor C17 and one end of a capacitor C27, and the capacitor C17 and another end of a capacitor C27 are.
The capacitors C15, C25, C16 and C26 perform filtering processing, and the capacitors C21 and C22 are coupling capacitors, so that the influence of the direct-current potential of the LM1875 at the later stage on the circuit at the earlier stage is prevented. Resistors R17, R9 and a capacitor C23 form a feedback circuit, resistors R17 and R9 are sampling resistors and sample output signals, the amplification factor of the circuit is determined by the ratio of the resistors R17 to R9, the capacitor C23 is used for stabilizing the drift of the direct-current zero potential of the pin 4 of the LM1875, and the resistors R19, R21 and the capacitor C19 are used for preventing the amplifier from generating high-frequency self-oscillation.
Example two
The embodiment of the invention provides a wireless Bluetooth communication method for a live working site, which is applied to a wireless Bluetooth communication device for the live working site and comprises the following steps: when the Bluetooth receiving module receives the switching instruction, the instruction is transmitted to the control module for route inquiry, and the corresponding Bluetooth signal repeater is selected according to the route inquiry result to be switched through the Bluetooth sending module.
On the live working site, each operator is provided with a Bluetooth headset and a corresponding Bluetooth signal repeater. When the operator is inconvenient to answer, the switching operation is required. In order to ensure the quality of the call, it is therefore necessary to select the most suitable bluetooth signal repeater through route inquiry and perform the transfer through the bluetooth sending module.
Before communication, a routing table needs to be established. The routing table comprises distance information and signal strength information, and the control module carries out routing query through the routing table.
Because the distance between the Bluetooth signal repeater and the Bluetooth headset and the signal intensity can change frequently, the control module performs corresponding calculation according to the distance information and the signal intensity information and updates the routing table so as to ensure the accuracy of the current information.
In order to ensure the quality of the call, the instruction is transmitted to the control module to carry out route inquiry, the weight of the Bluetooth signal repeater is obtained through calculation, the Bluetooth signal repeater with the largest weight is selected, and the Bluetooth signal repeater is switched through the Bluetooth sending module. In this embodiment, the distance information and the signal strength information are considered at the same time, so that the quality of the call can be ensured.
In one embodiment, if the bluetooth signal repeater with the largest weight cannot jump, the bluetooth signal repeater with the second largest weight is selected to jump; if still fails, the initial state is returned.
If the Bluetooth signal repeater with the largest weight can not be connected, the Bluetooth signal repeater with the second largest weight is selected to deal with some special situations that can not be connected. Also in order to ensure the quality of the call, in this embodiment, if the next-weighted bluetooth signal repeater still fails, the initial state is returned. In order to ensure the successful transfer of the call, the bluetooth signal repeater with the third highest selection weight can be set, and the bluetooth signal repeaters are sequentially sorted and selected to know the successful transfer.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that the invention is not limited thereto, and may be embodied in other forms without departing from the spirit or essential characteristics thereof. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.
Claims (10)
1. A wireless Bluetooth communication device for a live working site, comprising:
the Bluetooth signal repeater is used for receiving, amplifying and forwarding Bluetooth signals and the Bluetooth headset is used for receiving and sending the Bluetooth signals through the Bluetooth signal repeater in a matched connection manner;
the Bluetooth signal repeater comprises a Bluetooth receiving module, a control module and a Bluetooth sending module, wherein the Bluetooth receiving module is connected with the Bluetooth headset in a matching mode to receive Bluetooth signals, the control module is connected with the Bluetooth receiving module to amplify and control on/off of the Bluetooth signals, and the Bluetooth sending module is connected with the Bluetooth headset in a matching mode to send the Bluetooth signals.
2. The wireless bluetooth communication device for the live working site according to claim 1, wherein the control module comprises a filter circuit connected to the bluetooth receiving module, a first signal amplifying circuit connected to the filter circuit for bluetooth signal amplification, and a second signal amplifying circuit connected to the first signal amplifying circuit for further bluetooth signal amplification.
3. The wireless Bluetooth communication device for the hot-line work site as claimed in claim 2, wherein the filter circuit comprises capacitors C1, C2, resistors R1, R2 and capacitors C7, C8, the capacitor C1, one end of the capacitor C1 is connected to the first output terminal of the Bluetooth receiving module, the other end of the capacitor C1 is connected to one end of a resistor R1, one end of a capacitor C7 and the first signal amplifying circuit, the other end of the resistor R1 is connected to the common ground and one end of a resistor R2, the other end of the capacitor C7 is connected to the common ground and one end of a capacitor C8, the other ends of the resistor R2 and the capacitor C8 are connected to one end of a capacitor C2 and the first signal amplifying circuit, and the other end of the capacitor C2 is connected to the second output terminal of the Bluetooth receiving module.
4. The wireless Bluetooth communication device for the hot-line work site as claimed in claim 2, wherein the first signal amplifying circuit comprises resistors R3, R4, R5, R6, capacitors C3, C4 and amplifiers U1A, U1B, a non-inverting input terminal of the amplifier U1A is connected with a filter circuit, an inverting input terminal of the amplifier U1A is connected with one end of the resistor R3 and one end of the resistor R5, the other end of the resistor R3 is connected with the common ground after being connected with the capacitor C3 in series, and the other end of the resistor R5 is connected with an output terminal of the amplifier U1A and the second signal amplifying circuit; the non-inverting input end of the amplifier U1B is connected with the filter circuit, the inverting input end of the amplifier U1B is connected with one end of a resistor R4 and one end of a resistor R6, the other end of the resistor R4 is connected with a capacitor C4 in series and then connected with a common ground, and the other end of the resistor R6 is connected with the output end of the amplifier U1B and the second signal amplifying circuit.
5. The wireless Bluetooth communication device for the hot-line work site as claimed in claim 2, wherein the second signal amplifying circuit comprises amplifiers U2A, U2B, capacitors C15, C16, C17, C18, C19, C20, C21, C22, C23, C24, C25, C26, C27, C28 and resistors R7, R8, R9, R10, R17, R18, R19, R20, R21, R22,
a positive phase input end of the amplifier U2A is connected with one end of a capacitor C21 and one end of a resistor R7, the other end of the capacitor C21 is connected with a first signal amplifying circuit, the other end of the resistor R7 is connected with a common ground, an inverting input end of the amplifier U2A is connected with one end of a resistor R17 and one end of a resistor R9, the other end of the R17 is connected with a capacitor C23 in series and then connected with a common ground, the other end of the resistor R9 is connected with an output end of the amplifier U2A and a bluetooth transmitting module, a positive phase control end of the amplifier U2A is connected with a power supply end and one end of a capacitor C16 and one end of a capacitor C26, the other end of the capacitor C16 and the other end of a capacitor C26 are connected with a common ground, an inverting control end of the amplifier U2A is connected with a power supply end and one end of a capacitor C15 and one end of a capacitor C25, and;
the amplifier U2B has a positive phase input end connected to one end of a capacitor C22 and one end of a resistor R8, the capacitor C22 has another end connected to a first signal amplifying circuit, the resistor R8 has another end connected to a common ground, the amplifier U2B has an opposite phase input end connected to one end of a resistor R18 and one end of a resistor R10, the R18 has another end connected to a capacitor C24 in series and then connected to a common ground, the resistor R10 has another end connected to the output end of the amplifier U2B and the bluetooth transmitting module, the amplifier U2B has a positive phase control end connected to a power supply terminal and one end of a capacitor C18 and one end of a capacitor C28, the capacitor C18 and another end of a capacitor C28 are connected to a common ground, the amplifier U2B has an opposite phase control end connected to a power supply terminal and one end of a capacitor C17 and one end of a capacitor C27, and the capacitor C17 and another end of a capacitor C27 are.
6. A wireless Bluetooth communication method for a live working site is applied to the wireless Bluetooth communication device for the live working site according to any one of claims 1 to 5, and the method comprises the following steps:
when the Bluetooth receiving module receives the switching instruction, the instruction is transmitted to the control module for route inquiry, and the corresponding Bluetooth signal repeater is selected according to the route inquiry result to be switched through the Bluetooth sending module.
7. The method of claim 6, further comprising: and establishing a routing table, wherein the routing table comprises distance information and signal strength information, and the control module carries out routing query through the routing table.
8. The method according to claim 7, wherein the control module performs corresponding calculation and updates the routing table according to the distance information and the signal strength information.
9. The wireless Bluetooth communication method for the live working site according to claim 6, wherein the step of transmitting the command to the control module for routing query, and the step of selecting the corresponding Bluetooth signal repeater according to the routing query result for switching through the Bluetooth transmitting module comprises:
and transmitting the command to a control module for route inquiry, calculating to obtain the weight of the Bluetooth signal repeater, selecting the Bluetooth signal repeater with the maximum weight, and switching through a Bluetooth sending module.
10. The wireless Bluetooth communication method for the live working site according to claim 9, wherein if the Bluetooth signal repeater with the largest weight cannot jump, the Bluetooth signal repeater with the second largest weight is selected to jump; if still fails, the initial state is returned.
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| US20070202893A1 (en) * | 2004-03-17 | 2007-08-30 | Koninklijke Philips Electronics, N.V. | Radio repeater |
| CN104253642A (en) * | 2014-08-29 | 2014-12-31 | 李青花 | Relay transmission system based on near field communication and adjusting method |
| CN210351670U (en) * | 2019-05-24 | 2020-04-17 | 深圳市小瑞科技股份有限公司 | System for increasing transmission distance of Bluetooth headset |
| CN111866837A (en) * | 2020-08-06 | 2020-10-30 | 浙江欧意智能厨房股份有限公司 | Novel Bluetooth module |
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