Wireless relay pass-through circuit and communication system

Abstract

The utility model relates to communication transmission technical field, concretely relates to a wireless switching transparent circuit and communication system. Wireless switching transparent circuit includes: main control unit, wireless radio frequency module and data transceiver module, the control end of main control unit is connected with configuration signal input end, the first transmission end of main control unit is connected with wireless radio frequency module, the control end of data transceiver module is connected with the second transmission end of main control unit, and data transceiver module is also connected with communication equipment, main control unit receives configuration signal, and transmission wireless sending signal reaches wireless radio frequency module and wired receiving signal reaches data transceiver module, when data transceiver module receives wired receiving signal, wired input signal that communication equipment sends is transmitted to wireless radio frequency module through main control unit, and then converts into wireless output signal and carries out wireless communication sending. Do not need to rely on cable, avoid wiring problem, and the design of the coordination of signal transmission makes signal transmission more adaptive remote transparent demand.

Description

Technical Field

[0001] This utility model relates to the field of communication transmission technology, and in particular to a wireless transfer transparent transmission circuit and communication system. Background Technology

[0002] In many industrial automation systems, building automation systems, and security monitoring systems, a large number of devices use wired communication, requiring the laying of dedicated communication cables. In complex construction environments, such as large construction sites, mines, and factories, cabling is difficult and costly, and the cables are susceptible to physical damage, such as being crushed or cut by construction equipment. Furthermore, in scenarios requiring temporary debugging or relocation of equipment, frequent cabling and disconnection is not only inefficient but also prone to communication failures.

[0003] The above content is only used to help understand the technical solution of this utility model and does not represent an admission that the above content is prior art. Utility Model Content

[0004] The main purpose of this utility model is to provide a wireless transfer transparent transmission circuit and communication system, which aims to solve the technical problems of difficult wiring and relatively weak anti-interference ability of priority communication in complex environments in the prior art.

[0005] In a first aspect, this utility model provides a wireless transfer transparent transmission circuit, which includes: a main controller, a wireless radio frequency module, and a data transceiver module; The control terminal of the main controller is connected to the configuration signal input terminal, the first transmission terminal of the main controller is connected to the wireless radio frequency module, the second transmission terminal of the main controller is connected to the control terminal of the data transceiver module, and the data transceiver module is also connected to the communication equipment. The main controller is used to receive configuration signals from external input, generate wireless transmission signals to be transmitted to the wireless radio frequency module, and simultaneously generate wired reception signals to be transmitted to the data transceiver module. The data transceiver module is used to transmit the wired input signal sent by the communication device to the main controller when it receives the wired receiving signal; The main controller is also used to transmit the wired input signal to the wireless radio frequency module; The wireless radio frequency module is used to convert the wired input signal into a wireless output signal for wireless communication transmission when it receives the wireless transmission signal.

[0006] Optionally, the main controller is also configured to generate a wireless receiving signal for transmission to the wireless radio frequency module, and simultaneously generate a wired transmitting signal for transmission to the data transceiver module. The wireless radio frequency module is used to transmit external wireless input signals to the main controller when it receives the wireless receiving signal; The main controller is also used to transmit the wireless input signal to the data transceiver module; The data transceiver module is used to convert the wireless input signal into a wired output signal and transmit it to the communication device when it receives the wired transmission signal.

[0007] Optionally, the wireless radio frequency module includes: a wireless radio frequency chip and a radio frequency transceiver antenna circuit; The wireless radio frequency chip is connected to the main controller, and the wireless radio frequency chip is also connected to the radio frequency transceiver antenna circuit; The wireless radio frequency chip is used to receive the wired input signal transmitted by the main controller and transmit it to the radio frequency transceiver antenna circuit when the wireless transmission signal is received. The radio frequency transceiver antenna circuit is used to convert the wired input signal into the wireless output signal for wireless communication transmission.

[0008] Optionally, the radio frequency transceiver antenna circuit includes: a radio frequency antenna, first to third inductors, and first to fourth capacitors; The first end of the first inductor is connected to the first radio frequency port of the wireless radio frequency chip and the first end of the second inductor. The second end of the first inductor is connected to the first capacitor. The second end of the first capacitor is connected to the first end of the second capacitor and the radio frequency antenna. The second end of the second capacitor is grounded. The second end of the second inductor is connected to the second radio frequency port of the wireless radio frequency chip and the first end of the third inductor. The second end of the third inductor is connected to the first power supply terminal of the wireless radio frequency chip, the first end of the third capacitor and the first end of the fourth capacitor. The second ends of the third capacitor and the second ends of the fourth capacitor are grounded.

[0009] Optionally, the wireless transfer transparent transmission circuit further includes: a DIP switch module; The DIP switch module is connected to the control terminal of the main controller; The DIP switch module is used to generate configuration signals and transmit them to the main controller.

[0010] Optionally, the data transceiver module includes: a transceiver chip, a first resistor, and a second resistor; The control terminal of the transceiver chip is connected to the first resistor and the second resistor. The other end of the first resistor is grounded, and the other end of the second resistor is connected to the second transmission terminal of the main controller. The communication transmission terminal of the transceiver chip is connected to the main controller, and the level transmission terminal of the transceiver chip is connected to the communication device.

[0011] Optionally, the wireless transfer circuit may further include: a power module; The power module is connected to the power supply terminals of the main controller, the wireless radio frequency module, and the data transceiver module. The power module is used to generate power supply drive signals to supply power to the main controller, the wireless radio frequency module and the data transceiver module.

[0012] Optionally, the power module includes: a battery, a voltage sampling unit, a charging unit, a discharging unit, and a switching unit; The control terminal of the charging unit is connected to the main controller, the input terminal of the charging unit is connected to an external power source, the output terminal of the charging unit is connected to the battery, the battery is also connected to the input terminal of the discharging unit, the control terminal of the discharging unit is connected to the output terminal of the switching unit, the input terminal of the switching unit is connected to the main controller, and the output terminal of the discharging unit is connected to the power supply terminals of the main controller, the wireless radio frequency module, and the data transceiver module.

[0013] Secondly, this utility model provides a communication system, which includes: a host end and a serial port device end; Both the host and the serial port device communicate wirelessly via the wireless adapter transparent transmission circuit described above.

[0014] Optionally, the communication system further includes: a relay terminal; The relay end and the host end, as well as the relay end and the serial port device end, communicate wirelessly through the wireless transfer and transparent transmission circuit.

[0015] This utility model provides a wireless transfer and pass-through circuit and communication system. The wireless transfer and pass-through circuit includes a main controller, a wireless radio frequency module, and a data transceiver module. The control terminal of the main controller is connected to a configuration signal input terminal, the first transmission terminal of the main controller is connected to the wireless radio frequency module, and the second transmission terminal of the main controller is connected to the control terminal of the data transceiver module. The data transceiver module is also connected to a communication device. The main controller receives externally input configuration signals, generates wireless transmission signals to be transmitted to the wireless radio frequency module, and simultaneously generates wired reception signals to be transmitted to the data transceiver module. The data transceiver module, upon receiving the wired reception signal, transmits the wired input signal sent by the communication device to the main controller. The main controller also transmits the wired input signal to the wireless radio frequency module. The wireless radio frequency module, upon receiving the wireless transmission signal, converts the wired input signal into a wireless output signal for wireless communication transmission. By converting wired signals into wireless signals for transmission, the system eliminates the need for cables, avoids wiring difficulties, and the coordinated design of signal transmission makes it more suitable for long-distance pass-through requirements. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a functional block diagram of the first embodiment of the wireless transfer and transparent transmission circuit of this utility model; Figure 2 This is a circuit structure diagram of the second embodiment of the wireless transfer and transparent transmission circuit of this utility model; Figure 3 This is a schematic diagram of the DIP switch control circuit for the second embodiment of the wireless transfer transparent transmission circuit of this utility model. Figure 4 This is a circuit diagram of the data transceiver module of the second embodiment of the wireless transfer and transmission circuit of this utility model. Figure 5 This is a schematic diagram of the power module circuit of the third embodiment of the wireless transfer and transparent transmission circuit of this utility model. Figure 6 This is a first functional module diagram of the communication system proposed in this utility model; Figure 7 This is a diagram of the second functional module of the communication system proposed in this utility model.

[0018] Explanation of icon numbers: R1, first resistor; R2, second resistor; R3, third resistor; R4, fourth resistor; R5, fifth resistor; R6, sixth resistor; R7, seventh resistor; R8, eighth resistor; R9, ninth resistor; R10, tenth resistor; C1, first capacitor; C2, second capacitor; C3, third capacitor; C4, fourth capacitor; C5, fifth capacitor; C6, sixth capacitor; U1, wireless RF chip; U2, transceiver chip; U3, linear regulator; ANT, RF antenna; L1, first inductor; L 2. Second inductor; L3. Third inductor; 10. Main controller; 20. Wireless radio frequency module; 30. Data transceiver module; 201. Radio frequency transceiver antenna circuit; BAT. Battery; SW1. Push button switch; D1. First diode; D2. Second diode; Q1. First switching transistor; Q2. Second switching transistor; Q3. Third switching transistor; 40. DIP switch module; 50. Power supply module; 501. Voltage sampling unit; 502. Charging unit; 503. Discharging unit; 504. Switching unit.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly. Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0021] Reference Figure 1 , Figure 1 This is a functional block diagram of the first embodiment of the wireless transfer and transparent transmission circuit of this utility model, based on Figure 1 A wireless transfer and transparent transmission circuit is proposed.

[0022] In this embodiment, the wireless transfer and pass-through circuit includes: a main controller 10, a wireless radio frequency module 20, and a data transceiver module 30; the control terminal of the main controller 10 is connected to the configuration signal input terminal, the first transmission terminal of the main controller 10 is connected to the wireless radio frequency module 20, the second transmission terminal of the main controller 10 is connected to the control terminal of the data transceiver module 30, and the data transceiver module 30 is also connected to a communication device.

[0023] It should be noted that the main controller 10 can be used to receive configuration signals from external input, generate wireless transmission signals to be transmitted to the wireless radio frequency module 20, and simultaneously generate wired reception signals to be transmitted to the data transceiver module 30; the data transceiver module 30 can be used to transmit the wired input signals sent by the communication device to the main controller 10 when it receives the wired reception signals; the main controller 10 can also be used to transmit the wired input signals to the wireless radio frequency module 20; the wireless radio frequency module 20 can be used to convert the wired input signals into wireless output signals for wireless communication transmission when it receives the wireless transmission signals.

[0024] It should be understood that the main controller can be a microcontroller unit (MCU), such as the STC8G2K60S4 chip, which has the functions of signal acquisition, data processing, and signal transmission. The configuration signal can be manually adjusted or automatically generated by software to control the wireless-to-wired or wired-to-wireless conversion circuit. The wireless RF module is an electronic device responsible for wireless signal conversion and transmission / reception, enabling wired and wireless signal interaction and transmission. The data transceiver module is a functional module that enables wired signal interaction between the main controller and communication equipment.

[0025] Furthermore, this application can convert wired signals emitted by the serial communication device into wireless signals for transmission to the monitoring backend, and can also convert wireless signals emitted by the monitoring backend into wired signals for transmission to the serial communication device. The main controller 10 can also be used to generate wireless receiving signals for transmission to the wireless radio frequency module 20, and simultaneously generate wired transmitting signals for transmission to the data transceiver module 30; the wireless radio frequency module 20 can be used to transmit external wireless input signals to the main controller 10 upon receiving the wireless receiving signal; the main controller 10 can also be used to transmit the wireless input signals to the data transceiver module 30; the data transceiver module 30 can be used to convert the wireless input signals into wired output signals for transmission to the communication device upon receiving the wired transmitting signal.

[0026] It should be noted that the aforementioned wired communication can use RS485 communication. RS485 is a widely used serial communication standard in the industrial field. It uses differential signal transmission, has strong anti-interference capabilities and a long transmission distance, and can stably and reliably transmit data in complex industrial environments. Wireless communication methods can include Wi-Fi, Bluetooth, and 4G wireless communication technologies. 4G wireless communication technology operates in the 2.4GHz frequency band, with a transmission distance of up to 300 meters, and has advantages such as low cost, high flexibility, high data transmission rate, and good compatibility. Bluetooth has a shorter transmission distance, generally within tens of meters; Wi-Fi has higher power consumption and relatively weaker anti-interference capabilities in complex environments. This embodiment uses a 2.4G wireless transceiver. The transmitting end sends RS485 data through the 2.4G radio frequency transceiver, and the receiving end receives it using the 2.4G wireless transceiver and then converts it into RS485 signals or serial port data. This achieves transparent transmission of RS485 data.

[0027] In this embodiment, the main controller receives external configuration signals to coordinate signal transmission. A first transmission end connects to a wireless radio frequency module, and a second transmission end connects to a data transceiver module. The data transceiver module interfaces with the communication device to obtain wired input signals. The main controller transmits these wired input signals to the wireless radio frequency module, which converts them into wireless output signals for transmission. This solves the problems of traditional wired RS485 communication requiring dedicated cables, which are difficult, costly, and inconvenient to maintain in complex construction environments (such as large construction sites and mines). The wireless radio frequency module achieves the conversion from wired input signals to wireless output signals without relying on wired cables, thus avoiding wiring-related difficulties. Furthermore, the main controller's coordinated signal transmission design makes the wireless radio frequency module's signal transmission more suitable for remote transparent transmission requirements. Compared to Bluetooth and Wi-Fi, it better meets the requirements for stable remote communication, improving the circuit's applicability and communication reliability in complex scenarios.

[0028] Reference Figure 2 , Figure 2 This is a circuit structure diagram of the second embodiment of the wireless transfer and transparent transmission circuit of this utility model.

[0029] Based on the first embodiment of the wireless transfer and pass-through circuit described above, a second embodiment of the wireless transfer and pass-through circuit of this utility model is proposed.

[0030] In this embodiment, the wireless radio frequency module 20 includes a wireless radio frequency chip U1 and a radio frequency transceiver antenna circuit 201. The wireless radio frequency chip U1 is connected to the main controller 10, and the wireless radio frequency chip U1 is also connected to the radio frequency transceiver antenna circuit 201.

[0031] It should be noted that the wireless radio frequency chip U1 can be used to receive the wired input signal transmitted by the main controller 10 and transmit it to the radio frequency transceiver antenna circuit 201 when the wireless transmission signal is received. The radio frequency transceiver antenna circuit 201 can be used to convert the wired input signal into the wireless output signal for wireless communication transmission.

[0032] In one possible implementation, the radio frequency transceiver antenna circuit 201 includes: a radio frequency antenna ANT, first to third inductors, and first to fourth capacitors; the first end of the first inductor L1 is connected to the first radio frequency port of the wireless radio frequency chip U1 and the first end of the second inductor L2, the second end of the first inductor L1 is connected to the first capacitor C1, the second end of the first capacitor C1 is connected to the first end of the second capacitor C2 and the radio frequency antenna ANT, the second end of the second capacitor C2 is grounded, the second end of the second inductor L2 is connected to the second radio frequency port of the wireless radio frequency chip U1 and the first end of the third inductor L3, the second end of the third inductor L3 is connected to the first power supply terminal of the wireless radio frequency chip U1, the first end of the third capacitor C3 and the first end of the fourth capacitor C4, and the second ends of the third capacitor C3 and the fourth capacitor C4 are grounded.

[0033] It should be understood that since this application uses 2.4G radio frequency to realize wireless data transmission, the wireless radio frequency chip U1 uses the Si24R1 model chip. Pin (1) of chip U1 is the chip transmit / receive enable pin, which is active high. Pin (2) is the chip serial peripheral interface (SPI) enable pin, which is connected to the master controller through the chip select (CSN) signal; pins (3), (4) and (5) are the serial clock (SCK), master out slave in (MOSI), and master in slave out (MISO) pins of the SPI interface circuit, respectively; pin (6) is the interrupt signal output terminal for data transmission and reception completion, which is connected to the master controller. It also includes a crystal oscillator circuit composed of a crystal oscillator and capacitors to provide a stable clock source for the chip. Pin (16) is connected to ground with a resistor to provide a reference current for the chip. Pins (7), (15), and (17) are connected to the power supply and are also equipped with capacitors to filter the power supply and reduce power supply ripple interference. Pins (8) and (14) are grounded.

[0034] Reference Figure 3 , Figure 3 This is a circuit diagram illustrating the DIP switch control of a second embodiment of the wireless transfer transparent transmission circuit of this utility model. The wireless transfer transparent transmission circuit further includes a DIP switch module 40; the DIP switch module 40 is connected to the control terminal of the main controller 10.

[0035] It should be noted that the DIP switch module can be used to generate configuration signals for transmission to the main controller. Specifically, the DIP switch module can be a 4-bit DIP switch. When all 4 bits of the DIP switch are configured to be closed, corresponding to the hexadecimal number 0B0000, the main controller controls the transceiver circuit in normal transceiver mode. When the 4 bits of the DIP switch SW3 are not all closed, such as the 4 bits being sequentially closed, closed, closed, and open, corresponding to the hexadecimal number 0B0001, the MCU controls the transceiver circuit in relay mode. The hexadecimal number 0x01 formed by the DIP switch states is the repeater number. The circuit acts as a repeater, receiving signals transmitted from a remote end and forwarding them to the next receiver, thus extending the transmission distance. The repeater number allows the receiving end to identify the signal source upon receiving the signal.

[0036] Reference Figure 4 , Figure 4This is a circuit diagram of the data transceiver module of the second embodiment of the wireless transfer and pass-through circuit of this utility model. The data transceiver module 30 includes: a transceiver chip U2, a first resistor R1, and a second resistor R2. The control terminal of the transceiver chip U2 is connected to the first resistor R1 and the second resistor R2. The other end of the first resistor R1 is grounded, and the other end of the second resistor R2 is connected to the second transmission terminal of the main controller 10. The communication transmission terminal of the transceiver chip U2 is connected to the main controller 10, and the level transmission terminal of the transceiver chip U2 is connected to the communication device.

[0037] In one possible implementation, the transceiver chip can be a MAX485 chip, which converts the serial port signal of the main controller into an RS485 signal for transmission and reception. Pin (1) of the transceiver chip U2 is the RX pin, and pin (4) is the TX pin, both connected to the main controller MCU. The first resistor R1 is a pull-down resistor, and the transceiver chip is configured in receive mode by default. The second resistor R2 is a current-limiting resistor for wired receive signals and wired transmit signals. When the signal received by the second pin is high, the transceiver chip is in transmit mode, and the serial port data signal sent by the main controller is sent to pin (4) of the MAX485 chip, which is converted into a differential signal and sent to the serial communication device through pins (5) and (6). When the signal received by the second pin is low, the MAX485 chip is in receive mode, and the transceiver chip receives the differential data signal of the serial communication device from pins (5) and (6) and returns it to the main controller MCU from pin (1).

[0038] This embodiment uses 2.4G radio frequency to transmit RS485 signals, improving the developer's method for debugging and controlling RS485 devices. It reduces the risk of debugging RS485 devices in high-voltage rooms and high-altitude work equipment, and improves the efficiency of remote RS485 device debugging or control. The addition of a relay mode further extends the transmission and reception distance.

[0039] Reference Figure 5 , Figure 5 This is a schematic diagram of the power module circuit of the third embodiment of the wireless transfer and pass-through circuit of this utility model; based on the second embodiment of the wireless transfer and pass-through circuit described above, a third embodiment of the wireless transfer and pass-through circuit of this utility model is proposed.

[0040] In this embodiment, the power module 50 includes: a battery BAT, a voltage sampling unit 501, a charging unit 502, a discharging unit 503, and a switching unit 504 [Luo Qice 1][Heng Cheng 2]; the control terminal of the charging unit 502 is connected to the main controller 10, the input terminal of the charging unit 502 is connected to an external power source, the output terminal of the charging unit 502 is connected to the battery BAT, the battery BAT is also connected to the input terminal of the discharging unit 503, the control terminal of the discharging unit 503 is connected to the output terminal of the switching unit 504, the input terminal of the switching unit 504 is connected to the main controller 10, and the output terminal of the discharging unit 503 is connected to the power supply terminals of the main controller 10, the wireless radio frequency module 20, and the data transceiver module 30. Here, VBAT is the positive voltage of the battery.

[0041] In one possible implementation, the voltage sampling unit 501 includes a third resistor R3, a fourth resistor R4, and a first diode D1. The charging unit 502 includes a fifth resistor R5, a first switch Q1, and a sixth resistor R6 and a seventh resistor R7 forming a voltage divider structure. The discharging unit 503 includes a second diode D2, an eighth resistor R8, a second switch Q2, a third switch Q3, and a ninth resistor R9. The switching unit 504 includes a push-button switch SW1, a tenth resistor R10, and a linear regulator U3. It also includes a fifth capacitor C5 and a sixth capacitor C6 for voltage regulation and filtering. The input voltage is VIN_5V, and the output is the regulated VDD, with a voltage of 3.3V, which powers the main controller 10, the wireless RF module 20, and the data transceiver module 30.

[0042] It should be understood that battery charging is achieved by the MCU controlling the CHARGE_EN signal to be low. When this signal is low, the first switch Q1 (P-MOS type) conducts current from VIN_5V through the first diode D1, the current-limiting eighth resistor R8, and the first switch Q1 to charge the battery BAT. When the MCU detects that the ADC2 voltage has reached the battery's full charge condition, it pulls the CHARGE_EN pin voltage high and turns off the first switch Q1 to stop charging. When the MCU detects a decrease in the external input voltage (ADC1), or detects that the ON_OFF_TEST level is 0 for more than 3 seconds when button SW1 is pressed, the MCU pulls the POWER_EN signal high to 1. At this time, the third switch Q3 (NPN type) conducts, the gate of the second switch is pulled low, and the current flows from the positive terminal of the battery U8 through the diode D2 and the second switch Q2, the fast resettable fuse F1, and supplies power to the Zener diode U3. The current is then regulated by U3 and supplies power to the entire subsequent circuit, eventually returning to ground. When the MCU detects that the battery voltage is below a safe value, it pulls POWER_EN low to shut down battery power and prevent over-discharge from damaging the battery. The power supply circuit can simultaneously use both external power and battery power, enabling wireless data transmission and reception in situations where an external power source is unavailable. It should be noted that this utility model also discloses a communication system, which includes the aforementioned wireless switching and transparent transmission circuit, as described above. Figure 6 and Figure 7 , Figure 6 This is a first functional module diagram of the communication system proposed in this utility model; Figure 7 This is a diagram of the second functional module of the communication system proposed in this utility model.

[0043] It should be noted that the communication system includes a host end and a serial port device end; both the host end and the serial port device end communicate wirelessly through the wireless adapter transparent transmission circuit described above.

[0044] Furthermore, the communication system further includes: a relay terminal; the relay terminal and the host terminal, and the relay terminal and the serial port device terminal, all communicate wirelessly through the wireless transfer and transparent transmission circuit.

[0045] This embodiment uses two 2.4G wireless to RS485 wireless transfer circuits to achieve data pass-through communication from RS485 signals to 2.4G wireless signals. Based on these two 2.4G wireless to RS485 wireless transfer circuits, a repeater is added between the transceiver nodes to achieve data pass-through communication from RS485 signals to 2.4G wireless signals over a distance exceeding 300 meters. The number of wireless transfer circuits in the repeater can be set according to actual usage requirements; no specific limitation is imposed in this embodiment.

[0046] Since the communication system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0047] The above description is only a preferred embodiment of the present utility model and does not limit the scope of protection of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A wireless transfer and transparent transmission circuit, characterized in that, The wireless transfer transparent transmission circuit includes: a main controller, a wireless radio frequency module, and a data transceiver module; The control terminal of the main controller is connected to the configuration signal input terminal, the first transmission terminal of the main controller is connected to the wireless radio frequency module, the second transmission terminal of the main controller is connected to the control terminal of the data transceiver module, and the data transceiver module is also connected to the communication equipment. The main controller is used to receive configuration signals from external input, generate wireless transmission signals to be transmitted to the wireless radio frequency module, and simultaneously generate wired reception signals to be transmitted to the data transceiver module. The data transceiver module is used to transmit the wired input signal sent by the communication device to the main controller when it receives the wired receiving signal; The main controller is also used to transmit the wired input signal to the wireless radio frequency module; The wireless radio frequency module is used to convert the wired input signal into a wireless output signal for wireless communication transmission when it receives the wireless transmission signal.

2. The wireless transfer and transparent transmission circuit as described in claim 1, characterized in that, The main controller is also used to generate a wireless receiving signal and transmit it to the wireless radio frequency module, and at the same time generate a wired transmitting signal and transmit it to the data transceiver module. The wireless radio frequency module is used to transmit external wireless input signals to the main controller when it receives the wireless receiving signal; The main controller is also used to transmit the wireless input signal to the data transceiver module; The data transceiver module is used to convert the wireless input signal into a wired output signal and transmit it to the communication device when it receives the wired transmission signal.

3. The wireless transfer and transparent transmission circuit as described in claim 2, characterized in that, The wireless radio frequency module includes: a wireless radio frequency chip and a radio frequency transceiver antenna circuit; The wireless radio frequency chip is connected to the main controller, and the wireless radio frequency chip is also connected to the radio frequency transceiver antenna circuit; The wireless radio frequency chip is used to receive the wired input signal transmitted by the main controller and transmit it to the radio frequency transceiver antenna circuit when the wireless transmission signal is received. The radio frequency transceiver antenna circuit is used to convert the wired input signal into the wireless output signal for wireless communication transmission.

4. The wireless transfer and transparent transmission circuit as described in claim 3, characterized in that, The radio frequency transceiver antenna circuit includes: a radio frequency antenna, first to third inductors, and first to fourth capacitors; The first end of the first inductor is connected to the first radio frequency port of the wireless radio frequency chip and the first end of the second inductor. The second end of the first inductor is connected to the first capacitor. The second end of the first capacitor is connected to the first end of the second capacitor and the radio frequency antenna. The second end of the second capacitor is grounded. The second end of the second inductor is connected to the second radio frequency port of the wireless radio frequency chip and the first end of the third inductor. The second end of the third inductor is connected to the first power supply terminal of the wireless radio frequency chip, the first end of the third capacitor and the first end of the fourth capacitor. The second ends of the third capacitor and the second ends of the fourth capacitor are grounded.

5. The wireless transfer and transparent transmission circuit as described in claim 1, characterized in that, The wireless transfer transparent transmission circuit also includes: a DIP switch module; The DIP switch module is connected to the control terminal of the main controller; The DIP switch module is used to generate configuration signals and transmit them to the main controller.

6. The wireless transfer and transparent transmission circuit as described in claim 1, characterized in that, The data transceiver module includes: a transceiver chip, a first resistor, and a second resistor; The control terminal of the transceiver chip is connected to the first resistor and the second resistor. The other end of the first resistor is grounded, and the other end of the second resistor is connected to the second transmission terminal of the main controller. The communication transmission terminal of the transceiver chip is connected to the main controller, and the level transmission terminal of the transceiver chip is connected to the communication device.

7. The wireless transfer and transparent transmission circuit as described in claim 6, characterized in that, The wireless transfer transparent transmission circuit also includes: a power module; The power module is connected to the power supply terminals of the main controller, the wireless radio frequency module, and the data transceiver module. The power module is used to generate power supply drive signals to supply power to the main controller, the wireless radio frequency module and the data transceiver module.

8. The wireless transfer and transparent transmission circuit as described in claim 7, characterized in that, The power module includes: a battery, a voltage sampling unit, a charging unit, a discharging unit, and a switching unit; The control terminal of the charging unit is connected to the main controller, the input terminal of the charging unit is connected to an external power source, the output terminal of the charging unit is connected to the battery, the battery is also connected to the input terminal of the discharging unit, the control terminal of the discharging unit is connected to the output terminal of the switching unit, the input terminal of the switching unit is connected to the main controller, and the output terminal of the discharging unit is connected to the power supply terminals of the main controller, the wireless radio frequency module, and the data transceiver module.

9. A communication system, characterized in that, The communication system includes: a host terminal and a serial port device terminal; Both the host and the serial port device communicate wirelessly through the wireless transfer and transparent transmission circuit as described in any one of claims 1-8.

10. The communication system as described in claim 9, characterized in that, The communication system further includes: a relay terminal; The relay end and the host end, as well as the relay end and the serial port device end, communicate wirelessly through the wireless transfer and transparent transmission circuit.

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