Data unvarnished transmission system

Abstract

The utility model provides a data unvarnished transmission system, which comprises an antenna, a signal processing module, a serial port communication module and electronic equipment, and is characterized in that the antenna is used for receiving an electromagnetic wave signal transmitted by another antenna; the signal processing module is in communication connection with the antenna and is used for receiving a modulation signal output by the antenna and converting the modulation signal into a digital signal; the serial port communication module is in communication connection with the signal processing module and is used for receiving the digital signal and converting the digital signal into a serial data stream signal; and the electronic equipment is in communication connection with the output end of the serial port communication module and is used for receiving and displaying the serial data stream signal. According to the invention, the conversion from the electromagnetic wave signal to the serial data stream signal is realized, the unvarnished transmission of the electromagnetic wave signal is realized through the displayed serial data stream signal, the data conversion process is simple, the efficiency and accuracy of data transmission are improved, and the system cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to data communication technical field, especially related to a data transparent transmission system. BACKGROUND

[0002] With the wide application of wireless communication technology, antennas (ANT) are widely used to receive electromagnetic wave signals from various electronic keys and access control systems, etc. These systems usually need to convert the received electromagnetic wave signals into signals and directly use them as subsequent control instructions or judgment conditions. For example, in the passive entry passive start (PEPS) system, the electromagnetic wave signals are received by the antenna of the remote control (FOB) key and directly converted into binary data as one of the judgment conditions for subsequent high-frequency data logic processing. Therefore, the electromagnetic wave signals are not transparent and difficult to obtain directly during transmission. Whether the judgment or instruction corresponding to these electromagnetic wave signals is correct or not cannot be directly observed, which brings inconvenience to the development of related functions and the troubleshooting of problems occurring during the daily electromagnetic wave signal transmission process. In order to solve this problem, the current electromagnetic wave signal transparent transmission method needs to involve multiple circuit components and complex data processing process, which increases the cost and maintenance difficulty of the system. Or the traditional method of using an oscilloscope to analyze data has low efficiency. SUMMARY

[0003] The utility model aims at solving the problems of the electromagnetic wave signal transparent transmission method in the prior art, which needs multiple steps and complex hardware configuration, has high cost and high maintenance difficulty, and the method of using an oscilloscope to analyze data has low efficiency.

[0004] To solve the above technical problems, the utility model discloses a data transparent transmission system, including antenna, signal processing module, serial communication module and electronic equipment, antenna is used to receive the electromagnetic wave signal of another antenna emission;Signal processing module and antenna communication connection, be used for receiving the modulated signal of antenna output, and convert modulated signal into digital signal;Serial communication module and signal processing module communication connection, be used for receiving digital signal and convert digital signal into serial data stream signal;Electronic equipment and serial communication module's output end communication connection, be used for receiving and display serial data stream signal.

[0005] The technical scheme is adopted, the antenna receives the electromagnetic wave signal transmitted by another antenna, the signal processing module in communication connection with the antenna receives the modulated signal output by the antenna, and the signal processing module converts the modulated signal into a digital signal, the serial communication module in communication connection with the signal processing module receives the digital signal output by the signal processing module, and the serial communication module converts the digital signal into a serial data stream signal, the electronic device in communication connection with the output end of the serial communication module receives and displays the serial data stream signal, the conversion from the electromagnetic wave signal to the serial data stream signal is realized, the electromagnetic wave signal is transparently transmitted by checking the displayed serial data stream signal, the system structure is simple, the data conversion process is simple, compared with the oscilloscope data analysis method, the efficiency and accuracy of electromagnetic wave signal transmission are improved, and compared with the electromagnetic wave signal transparent transmission method, the system cost is reduced.

[0006] According to another specific embodiment of the utility model, the data transparent transmission system disclosed by the embodiment of the utility model, the signal processing module comprises a first control chip and a general input and output interface in communication connection; wherein the first control chip is in communication connection with the output end of the antenna, and is used for converting the modulated signal into a digital signal; the general input and output interface is in communication connection with the receiving end of the serial communication module.

[0007] The technical scheme is adopted, the first control chip is in communication connection with the output end of the antenna, the modulated signal output by the antenna is received through the first control chip, and the modulated signal is converted into a digital signal, and the digital signal is further output to the serial communication module through the general input and output interface, so that the conversion and output from the modulated signal to the digital signal are realized through a simple structure.

[0008] According to another specific embodiment of the utility model, the data transparent transmission system disclosed by the embodiment of the utility model, the first control chip is provided with an amplifier, a filter and a demodulator in turn in communication connection, the amplifier is in communication connection with the output end of the antenna, and the demodulator is in communication connection with the general input and output interface.

[0009] The technical scheme is adopted, the signal strength of the received modulated signal is improved through the amplifier, so that the signal is strong enough for subsequent processing; the noise and interference in the signal are removed through the filter, and the effective signal is retained; the modulated signal is further converted into a digital signal through the demodulator, so that the conversion from the modulated signal to the digital signal is realized; in addition, the amplifier, the filter and the demodulator are integrated on the first control chip, so that the structure is simplified.

[0010] According to another specific embodiment of the utility model, the utility model discloses a data transparent transmission system, and the general type input and output interface includes the first switch and the second switch respectively with the first control chip is connected, and the first switch is connected in series with the power end, and the second switch is connected in series with the ground wire, and the first switch and the second switch are electrically connected with the serial communication module respectively.

[0011] The technical scheme has the advantages that the general type input and output interface includes the first switch connected in series with the power end and the second switch connected in series with the ground wire, when the digital signal is low level, the first switch is turned on, and the second switch is turned off, and the low level digital signal is converted into a high level signal output to the serial communication module after passing through the first switch circuit; when the digital signal is high level, the second switch is turned on, and the first switch is turned off, and the high level digital signal is converted into a low level signal output to the serial communication module after passing through the second switch circuit, the high and low level signals output by the first control chip are distinguished and converted, and the communication stability is improved.

[0012] According to another specific embodiment of the utility model, the utility model discloses a data transparent transmission system, and the serial communication module includes the second control chip, the third switch and the fourth switch; the second control chip is electrically connected with the first switch and the second switch respectively, one of the third switch and the fourth switch is connected in series with the power end, and the other one is connected in series with the ground wire, and each of the third switch and the fourth switch is electrically connected with the first switch, the second switch and the second control chip respectively; the second control chip is used for controlling the third switch or the fourth switch to be turned on.

[0013] The technical scheme has the advantages that the digital signal is transmitted to the second control chip, the digital signal is converted into a serial data stream signal through the second control chip, and the conversion from the digital signal to the serial data stream signal is realized through a simple structure. In addition, the high and low level digital signals output by the general type input and output interface are distinguished through the turn-on of the third switch or the fourth switch.

[0014] According to another specific embodiment of the utility model, the utility model discloses a data transparent transmission system, and resistors are arranged on the circuit between the first switch and the power end, on the circuit between the second switch and the ground wire, on the circuit between the third switch and the first switch and the second switch, and on the circuit between the fourth switch and the first switch and the second switch.

[0015] The technical scheme has the advantages that by arranging the resistors for the switches, the current in the circuit can be limited, overcurrent-induced switch failure or short circuit-induced accidents can be avoided, and the service life of the switches is prolonged.

[0016] According to another specific embodiment of the utility model, the data transparent transmission system disclosed by the embodiment of the utility model is provided with a general asynchronous transceiver on the second control chip, and the general asynchronous transceiver is used for converting digital signals into serial data stream signals.

[0017] According to another specific embodiment of the utility model, the data transparent transmission system disclosed by the embodiment of the utility model is provided with a general asynchronous transceiver on the second control chip, and the general asynchronous transceiver is used for converting digital signals into serial data stream signals.

[0018] The voltage and current of the general input and output interface and the serial communication module are the same, so that the stability and accurate transmission of signals between the two are ensured.

[0019] According to another specific embodiment of the utility model, the data transparent transmission system disclosed by the embodiment of the utility model is provided with a general asynchronous transceiver on the second control chip, and the general asynchronous transceiver is used for converting digital signals into serial data stream signals.

[0020] The voltage and current of the general input and output interface and the serial communication module are the same, so that the stability and accurate transmission of signals between the two are ensured.

[0021] According to another specific embodiment of the utility model, the data transparent transmission system disclosed by the embodiment of the utility model is provided with a general asynchronous transceiver on the second control chip, and the general asynchronous transceiver is used for converting digital signals into serial data stream signals.

[0022] The voltage and current of the general input and output interface and the serial communication module are the same, so that the stability and accurate transmission of signals between the two are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The structure diagram of the data transparent transmission system provided by the embodiment of the utility model is shown.

[0024] Mark explanation:

[0025] 100: antenna; 210: first control chip; 220: general input and output interface; Q1: first switch; Q2: second switch; 300: serial communication module; 310: second control chip; K1: third switch; K2: fourth switch; 400: electronic equipment; 500: circuit board. DETAILED DESCRIPTION

[0026] With the wide application of wireless communication technology, antennas (ANT) are widely used to receive electromagnetic wave signals from various electronic keys and access control systems, etc., which usually need to convert the received electromagnetic wave signals into signals for subsequent control instructions or judgment conditions. For example, in the passive entry passive start (PEPS) system, the electromagnetic wave signals are received by the antenna of the remote control (FOB) key and directly converted into binary data as one of the judgment conditions for subsequent high-frequency data logic processing. Therefore, the electromagnetic wave signals are opaque and difficult to obtain directly during transmission, and it is not intuitive to see whether the judgment or instruction corresponding to these electromagnetic wave signals is correct or not, which brings inconvenience to the development of related functions and the troubleshooting of problems occurring in the process of daily electromagnetic wave signal transmission. In order to solve this problem, the current electromagnetic wave signal transparent transmission method needs to involve multiple circuit components and complex data processing process, so that data reception, processing and transmission usually need multiple steps and complex hardware configuration, which increases the cost and maintenance difficulty of the system; or the traditional method of using an oscilloscope to analyze data, which is low in efficiency.

[0027] To solve the above technical problems, the utility model provides a kind of data transparent transmission system of antenna, this system can simplify data processing process, improve the efficiency and accuracy of data transmission, by data analysis processing module the signal received by antenna is converted into digital signal, and by serial port tool data signal reception and conversion into serial data stream, after serial data stream transmission and display in the electronic equipment such as personal computer installed with serial port tool software, it is convenient to view. Thus by simplifying hardware configuration and data transmission link, reduce system cost, realizes the transparent transmission of antenna signal.

[0028] To make the purpose, technical scheme and advantages of the utility model clearer, the embodiments of the utility model will be described in further detail below with reference to the drawings.

[0029] For the above problems, the utility model provides a kind of data transparent transmission system, as Figure 1 Shown, including antenna 100, signal processing module, serial port communication module 300 and electronic equipment 400.

[0030] Antenna 100 is used to receive another antenna ( Figure 1The antenna 100 can be a separate antenna or an antenna integrated on a specific component or system, such as the antenna of a remote control (FOB) key. The other antenna can be a separate antenna or an antenna integrated on a specific component or system, such as the antenna of a passive entry and passive start (PEPS) system. In one embodiment of the present application, the operating frequency band of the antenna 100 is 122 kHz-128 kHz, which belongs to a low frequency (LF) antenna, and the LF antenna should also receive an LF electromagnetic wave signal. In one specific embodiment, the antenna 100 can be selected as the antenna of the FOB key, and the operating frequency band is 125 kHz.

[0031] It should be noted that the installation position of the antenna 100 should consider the interference source and the shield, so a transparent acrylic shell can be selected to ensure the best signal receiving effect.

[0032] The signal processing module is in communication connection with the antenna 100, for receiving the modulated signal output by the antenna 100 and converting the modulated signal into a digital signal. In one embodiment of the present application, the signal processing module includes a first control chip 210 and a general purpose input / output interface (GPIO) 220 in communication connection; wherein the first control chip 210 is in communication connection with the output end of the antenna 100, for converting the modulated signal into a digital signal; and the general purpose input / output interface 220 is in communication connection with the receiving end of the serial communication module 300. In this way, the first control chip 210 receives the modulated signal output by the antenna 100 and converts the modulated signal into a digital signal, and outputs the digital signal to the serial communication module 300 through the general purpose input / output interface 220. In one specific embodiment, the digital signal can be a binary data signal.

[0033] In one of the embodiments of the utility model, the antenna 100, the first control chip 210 and the general input and output interface 220 are integrated on one circuit board 500, which simplifies the structure. The circuit board 500 can be the circuit board of the FOB key, and the circuit board of the FOB key integrates the antenna, the FOB control chip and the general input and output interface. The FOB control chip further integrates the circuit capable of amplifying, filtering and demodulating the modulated signal. In this way, the existing circuit board of the FOB key can realize the reception, conversion and output of the electromagnetic wave signal, without the need of developing additional circuit board, which shortens the development time and reduces the system cost. Directly selecting the circuit board of the FOB key, the working mode of the GPIO interface on the circuit board of the FOB key needs to be set as the output mode, and the appropriate voltage and baud rate are set according to the communication protocol to match the content of the data protocol. If the antenna 100 is a low-frequency antenna, the above setting is performed according to the low-frequency communication protocol.

[0034] In one of the embodiments of the utility model, the amplifier, the filter and the demodulator are sequentially connected in communication on the first control chip 210, the amplifier is connected in communication with the output end of the antenna 100, and the demodulator is connected in communication with the general input and output interface 220. The amplifier, the filter and the demodulator on the first control chip 210 are in the form of amplification circuit, filtering circuit and demodulation circuit. The amplifier can improve the signal strength of the received modulated signal, ensuring that the signal is strong enough for subsequent processing. The filter can remove the noise and interference in the signal and retain the effective signal. Further, the demodulator can convert the modulated signal (including amplitude modulation (AM) or frequency modulation (FM) signal) into a digital signal, realizing the conversion from the modulated signal to the digital signal. In addition, the amplifier, the filter and the demodulator are integrated on the first control chip 210, which simplifies the structure. In one specific embodiment, the first control chip 210 is the FOB control chip of the FOB key, and the FOB control chip integrates the amplifier, the filter and the demodulator.

[0035] In one of the embodiments of the utility model, as shown in Figure 1As shown, the general-purpose input and output interface 220 includes a first switch Q1 and a second switch Q2 connected with the first control chip 210 respectively, and the first switch Q1 is connected in series with the power supply end Vdd, and the second switch Q2 is connected in series with the ground wire GND, and the first switch Q1 and the second switch Q2 are electrically connected with the serial communication module 300 respectively; the first control chip 210 is used for controlling the first switch Q1 to be turned on and the second switch Q2 to be turned off when the digital signal is low, and controlling the second switch Q2 to be turned on and the first switch Q1 to be turned off when the digital signal is high. In this way, the low-level digital signal is converted into a high-level digital signal output to the serial communication module 300 through the first switch Q1 circuit, and the high-level digital signal is converted into a low-level digital signal output to the serial communication module 300 through the second switch Q2 circuit, that is, according to the level of the received digital signal, the first switch Q1 and the second switch Q2 are controlled to be turned on and turned off, and the signal with the opposite level state of the received signal is output, so that the high-level and low-level signals output by the first control chip 210 are distinguished and converted, and the communication stability is improved.

[0036] It should be noted that the value range of the high level of the high-level digital signal converted from the low-level digital signal at the FOB end to the UART end is 2.0V-Vdd, and the value range of the low level of the low-level digital signal converted from the high-level digital signal at the FOB end to the UART end is 0V-0.8V.

[0037] Specifically, as shown in the figure, Figure 1 The circuit between the first switch Q1 and the power supply end Vdd is provided with a resistor R3, and the circuit between the second switch Q2 and the ground wire GND is provided with a resistor R4, so that the current in the corresponding circuit can be limited, the corresponding switch can be prevented from being invalid due to overcurrent or accidents caused by short circuit, and the service life of the corresponding switch is prolonged.

[0038] The serial communication module 300 is in communication connection with the signal processing module, and is used for receiving a digital signal and converting the digital signal into a serial data stream signal. Specifically, the serial communication module 300 and the general-purpose input and output interface 220 of the signal processing module can be in communication connection through wires. In one of the embodiments of the present application, the configuration of the general-purpose input and output interface 220 should consider the data transmission rate and electrical characteristics, and the voltage and current of the general-purpose input and output interface 220 are the same as those of the serial communication module 300, so as to ensure the accurate transmission of the data signals between them. The serial communication module 300 can be a serial communication board specifically, the digital signal output by the general-purpose input and output interface 220 of the signal processing module is transmitted to the receiving (RX) pin of the serial communication board, the serial communication board detects the state of the RX pin, and converts the received digital signal into a serial data stream signal. The serial communication board should have good signal detection capability and data conversion function, so as to ensure that the data can be accurately converted into a serial format.

[0039] In one of the embodiments of the utility model, serial port communication module 300 includes second control chip 310, third switch and fourth switch, second control chip 310 is connected with first switch Q1 and second switch Q2 respectively, one of third switch and fourth switch is connected in series with power supply end Vdd, the other switch is connected in series with ground wire GND, and each switch in third switch and fourth switch is connected with first switch Q1, second switch Q2 and second control chip 310 respectively, and second control chip 310 is used to control the conduction of third switch or fourth switch. In this way, digital signal is transmitted to second control chip 310, and second control chip 310 is used to convert digital signal into serial data stream signal, and the conversion from digital signal to serial data stream signal is realized by simple structure.

[0040] Specifically, as shown in Figure 1 If third switch K1 is connected in series with power supply end Vdd, fourth switch K2 is connected in series with ground wire GND. By the conduction of third switch K1 and the disconnection of fourth switch K2 or the conduction of fourth switch K2 and the disconnection of third switch K1, the high and low level digital signals output by general input and output interface 220 can be distinguished, and the high and low level digital signals output by general input and output interface 220 can be further marked by second control chip 310, so as to convert the marked digital signals into serial data stream signals.

[0041] In one of the embodiments of the utility model, resistance R1 is arranged on the circuit between third switch K1 and first switch Q1 and second switch Q2, and resistance R2 is arranged on the circuit between fourth switch K2 and first switch Q1 and second switch Q2, so as to limit the current in the corresponding circuit, avoid the failure of the corresponding switch caused by overcurrent or the accident caused by short circuit, and prolong the service life of the corresponding switch.

[0042] In one of the embodiments of the utility model, second control chip 310 is universal asynchronous receiver / transmitter (UART) control chip, and universal asynchronous receiver / transmitter is arranged on UART control chip, and universal asynchronous receiver / transmitter is used to convert digital signal into serial data stream signal, so as to realize the conversion from digital signal to serial data stream signal.

[0043] Specifically, as shown in Figure 1 Electronic equipment 400 is connected with the output end of serial port communication module 300 in communication, and is used to receive and display serial data stream signal.

[0044] The output end of the serial communication module 300 and the electronic device 400 each include a corresponding USB interface or Type-C interface, and the two are communicatively connected through the USB interface or Type-C interface and a corresponding connecting line. The serial communication module 300 can transmit the converted serial data stream signal to the electronic device 400 through the USB interface or Type-C interface.

[0045] The electronic device 400 is installed with serial communication software (Universal Asynchronous Receiver / Transmitter Software, UART SW), which needs to have correct configuration parameters, including port selection, baud rate (which can be 115200), data bits (which can be 8), stop bits (which can be 1), etc., to ensure correct reception and analysis of data. The serial communication software on the electronic device 400 receives and analyzes the serial data stream corresponding to the serial data stream signal, and can further display the serial data stream, which is convenient for users to directly observe the serial data stream corresponding to the electromagnetic wave signal, and realizes the transparent transmission of the electromagnetic wave signal. In addition, the serial communication software can also be used for other processing, such as recording the sending time, etc.

[0046] It should be noted that in the present embodiment, the electronic device 400 includes but is not limited to a personal computer (Personal Computer, PC), a mobile phone, a tablet computer, a smart wearable device, and other common electronic devices.

[0047] In the embodiment, the electromagnetic wave signal transmitted by another antenna is received by the antenna 100, the signal processing module in communication connection with the antenna 100 receives the modulated signal output by the antenna 100, and the signal processing module converts the modulated signal into a digital signal. The serial communication module 300 in communication connection with the signal processing module receives the digital signal output by the signal processing module, and converts the digital signal into a serial data stream signal. The electronic device 400 in communication connection with the output end of the serial communication module 300 receives and displays the serial data stream signal. In a specific embodiment, the LF electromagnetic wave signal transmitted by another antenna (specifically, the antenna in the PESP system) is received by the LF antenna (referred to as LF antenna for short), the signal processing module in communication connection with the LF antenna receives the LF modulated signal output by the LF antenna, and converts the LF modulated signal into a digital signal through amplification, filtering and demodulation processing and outputs through the GPIO interface. The serial communication board in communication connection with the signal processing module receives the digital signal output by the GPIO interface of the signal processing module, and converts the digital signal into a serial data stream signal. The electronic device 400 such as a personal computer (PC) in communication connection with the output end of the serial communication board receives and displays the serial data stream signal, realizing the conversion of the electromagnetic wave signal into the serial data stream signal. By viewing the displayed serial data stream signal, the electromagnetic wave signal is transparently transmitted, and the data conversion process is simple, which not only improves the efficiency and accuracy of electromagnetic wave signal transmission, but also reduces the system cost.

[0048] It should be noted that in addition to the specific embodiments of the present application described above, other advantages and effects of the present application can be easily understood by those skilled in the art from the disclosure. Although the description of the present application will be introduced in combination with the preferred embodiments, this does not mean that the features of the present application are limited to the embodiments. On the contrary, the purpose of introducing the present application in combination with the embodiments is to cover other options or modifications that can be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details will be included in the following description. The present application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0049] It should be noted that in this specification, similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0050] The terms "first", "second", etc. are only used to distinguish description, and cannot be understood as indicating or implying relative importance. Although the utility model has been illustrated and described by referring to certain preferred embodiments of the utility model, it should be understood by those skilled in the art that the above is further detailed description of the utility model in combination with specific embodiments, and the specific implementation of the utility model cannot be limited to these descriptions. Those skilled in the art can make various changes in form and details, including making a number of simple inferences or replacements, without departing from the spirit and scope of the utility model.

Claims

1. A data pass-through system, characterized by, The application relates to an antenna signal processing device. The antenna is used for receiving electromagnetic wave signals transmitted by another antenna. The signal processing module is in communication connection with the antenna and is used for receiving modulated signals output by the antenna and converting the modulated signals into digital signals. The serial communication module is in communication connection with the signal processing module and is used for receiving the digital signals and converting the digital signals into serial data stream signals. The electronic device is in communication connection with the output end of the serial communication module and is used for receiving and displaying the serial data stream signals.

2. The data pass-through system of claim 1, wherein, The signal processing module comprises a first control chip and a general-purpose input and output interface which are in communication connection; the first control chip is in communication connection with the output end of the antenna and is used for converting the modulated signals into the digital signals; and the general-purpose input and output interface is in communication connection with the receiving end of the serial communication module.

3. The data pass-through system of claim 2, wherein, An amplifier, a filter and a demodulator are sequentially arranged on the first control chip and are in communication connection; the amplifier is in communication connection with the output end of the antenna; and the demodulator is in communication connection with the general-purpose input and output interface.

4. The data pass-through system of claim 2, wherein, The general-purpose input and output interface comprises a first switch and a second switch which are connected with the first control chip respectively; the first switch is in series connection with a power supply end; the second switch is in series connection with a ground wire; and the first switch and the second switch are respectively in electrical connection with the serial communication module. The first control chip is used for controlling the first switch to be turned on and the second switch to be turned off when the digital signals are low; and the first control chip is used for controlling the second switch to be turned on and the first switch to be turned off when the digital signals are high.

5. The data pass-through system of claim 4, wherein, The serial communication module comprises a second control chip, a third switch and a fourth switch; the second control chip is in electrical connection with the first switch and the second switch respectively; one of the third switch and the fourth switch is in series connection with the power supply end; the other one is in series connection with the ground wire; and each of the third switch and the fourth switch is in electrical connection with the first switch, the second switch and the second control chip respectively. The second control chip is used for controlling the third switch or the fourth switch to be turned on.

6. The data pass-through system of claim 5, wherein, Resistors are arranged on the circuits between the first switch and the power supply end, between the second switch and the ground wire, between the third switch and the first switch and the second switch, and between the fourth switch and the first switch and the second switch.

7. The data pass-through system of claim 5, wherein, A universal asynchronous receiver transmitter is arranged on the second control chip and is used for converting the digital signals into the serial data stream signals.

8. The data pass-through system of claim 2, wherein, The general-purpose input and output interface has the same voltage and current as the serial communication module.

9. A data pass-through system as claimed in any one of claims 2 to 8, wherein, The antenna, the first control chip and the general-purpose input and output interface are integrated on one circuit board.

10. The data pass-through system of any one of claims 2-8, wherein, The working frequency band of the antenna is 122 kHz-128 kHz.

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