1394 signal wireless transmission system and connector

Abstract

The invention belongs to the technical field of wireless data transmission, and particularly relates to a 1394 signal wireless transmission system and a connector, the 1394 signal wireless transmission system comprises a hardware processing circuit and a millimeter wave waveguide antenna, the hardware processing circuit comprises a signal amplification circuit and a signal attenuation circuit; the signal attenuation circuit is connected with the millimeter wave waveguide antenna and used for attenuating a 1394 signal needing to be sent, the amplitude of the attenuated signal is within the signal amplitude range of the millimeter wave chip, and wireless signal sending is conducted through the millimeter wave waveguide antenna. The signal amplification circuit is connected with the millimeter wave waveguide antenna and used for amplifying signals received by the millimeter wave waveguide antenna, the amplitude of the amplified signals meets the amplitude requirement of 1394 signals, wireless transmission of the 1394 signals is achieved, an airborne interface is not needed, dirt accumulation is avoided, the transmission speed is higher, and safety is higher.

Description

Technical Field

[0001] The invention belongs to the technical field of wireless data transmission, and in particular relates to a 1394 signal wireless transmission system and a connector. Background Art

[0002] At present, the transmission mode of airborne maintenance interface connectors is contact transmission. This transmission mode has a complex structure and must be plugged in and out, which has many problems. Traditional airborne maintenance interfaces will accumulate various dirt after the aircraft performs a flight mission, and often need to be cleaned with a water gun, which is extremely inconvenient to operate. During the ground maintenance of the aircraft, if the dirt is not cleaned, it will affect the signal transmission, and it is inefficient and prone to safety problems. Therefore, in modern warfare, airborne maintenance interfaces are gradually developing towards wireless and high-speed directions. Therefore, realizing wireless transmission of 1394 signals is crucial to the development of airborne interfaces. Summary of the invention

[0003] The purpose of the present invention is to provide a 1394 signal wireless transmission system and connector to solve the problem in the prior art that the onboard maintenance interface of contact transmission is prone to accumulate stains, affecting signal transmission, resulting in low efficiency and poor safety.

[0004] To solve the above technical problems, the present invention provides a 1394 signal wireless transmission system, including a hardware processing circuit and a millimeter wave waveguide antenna, the hardware processing circuit including a signal amplification circuit and a signal attenuation circuit; the signal attenuation circuit is connected to the millimeter wave waveguide antenna, and is used to attenuate the 1394 signal to be sent, and the amplitude of the attenuated signal is within the amplitude range of the millimeter wave chip signal, and the wireless signal is sent through the millimeter wave waveguide antenna; the signal amplification circuit is connected to the millimeter wave waveguide antenna, and is used to amplify the signal received by the millimeter wave waveguide antenna, and the amplitude of the amplified signal meets the amplitude requirement of the 1394 signal.

[0005] Furthermore, the output end signal amplitude and input end signal amplitude of the signal attenuation circuit are attenuated in a ratio of 1:3.

[0006] Furthermore, a first resistor is connected in series between the positive pole of the input end and the positive pole of the output end of the signal attenuation circuit, and a second resistor is connected in series between the negative pole of the input end and the negative pole of the output end; the signal attenuation circuit also includes a third resistor and a fourth resistor, one end of the third resistor is connected to the series connection point between the positive pole of the input end and the first resistor, and the other end is connected to the series connection point between the negative pole of the input end and the second resistor; one end of the fourth resistor is connected to the series connection point of the positive pole of the output end of the first resistor, and the other end is connected to the series connection point between the second resistor and the negative pole of the output end.

[0007] Furthermore, a first filter capacitor is connected in series between the connection point between the output positive terminal and the first resistor and the output positive terminal, and a second filter capacitor is connected in series between the connection point between the output negative terminal and the second resistor and the output negative terminal.

[0008] Furthermore, the signal amplifying circuit includes an amplifying chip, and a third filter capacitor and a fourth filter capacitor are respectively connected in series to the positive and negative electrodes of the output end of the amplifying chip.

[0009] Furthermore, the millimeter wave waveguide antenna includes a 60 GHz millimeter wave wireless transmission circuit and a PCB antenna.

[0010] The beneficial effects are as follows: in order to solve the problem that the onboard maintenance interface of the contact transmission in the prior art is easy to accumulate stains, which affects the signal transmission, resulting in low efficiency and poor safety, the present invention provides a 1394 signal wireless transmission system, which uses a millimeter wave waveguide antenna to wirelessly transmit 1394 signals. The 1394 signal has a high requirement for the transmission speed, and the millimeter wave waveguide antenna can meet the requirements of the 1394 signals of different modes for the transmission speed. Moreover, considering the problem that the amplitude of the 1394 signal and the amplitude of the millimeter wave waveguide antenna do not match, the system of the present invention adds a hardware processing circuit, which can realize the attenuation of the 1394 signal to be sent, and the attenuated signal amplitude is within the amplitude range of the millimeter wave chip signal, and can also amplify the signal received by the millimeter wave waveguide antenna, and the amplified signal amplitude meets the amplitude requirement of the 1394 signal, solves the problem that the amplitude of the 1394 signal and the amplitude of the millimeter wave waveguide antenna do not match, and realizes the wireless transmission of the 1394 signal through the millimeter wave waveguide antenna.

[0011] The 1934 signal wireless transmission system of the present invention has a fast transmission speed and can meet the transmission speed requirements of 1394 signals of different modes. It uses wireless transmission, does not require a contact-type onboard maintenance interface, and will not cause stain accumulation, thereby ensuring the accuracy and efficiency of signal transmission, low bit error rate, fast transmission speed, no safety problems, and safe and reliable.

[0012] In order to solve the above technical problems, the present invention also provides a 1394 signal wireless transmission connector, including a transmitting end and a receiving end, both of which include a 1394 signal wireless transmission system, the 1394 signal wireless transmission system of the transmitting end and the 1394 signal wireless transmission system of the receiving end are wirelessly connected, the 1394 signal wireless transmission system includes a hardware processing circuit and a millimeter wave waveguide antenna, the hardware processing circuit includes a signal amplification circuit and a signal attenuation circuit; the signal attenuation circuit is connected to the millimeter wave waveguide antenna, and is used to attenuate the 1394 signal to be sent, and the amplitude of the attenuated signal is within the amplitude range of the millimeter wave chip signal, and the wireless signal is sent through the millimeter wave waveguide antenna; the signal amplification circuit is connected to the millimeter wave waveguide antenna, and is used to amplify the signal received by the millimeter wave waveguide antenna, and the amplitude of the amplified signal meets the amplitude requirement of the 1394 signal.

[0013] Furthermore, the output end signal amplitude and input end signal amplitude of the signal attenuation circuit are attenuated in a ratio of 1:3.

[0014] Furthermore, a first resistor is connected in series between the positive pole of the input end and the positive pole of the output end of the signal attenuation circuit, and a second resistor is connected in series between the negative pole of the input end and the negative pole of the output end; the signal attenuation circuit also includes a third resistor and a fourth resistor, one end of the third resistor is connected to the series connection point between the positive pole of the input end and the first resistor, and the other end is connected to the series connection point between the negative pole of the input end and the second resistor; one end of the fourth resistor is connected to the series connection point of the positive pole of the output end of the first resistor, and the other end is connected to the series connection point between the second resistor and the negative pole of the output end.

[0015] Furthermore, a first filter capacitor is connected in series between the connection point between the output positive terminal and the first resistor and the output positive terminal, and a second filter capacitor is connected in series between the connection point between the output negative terminal and the second resistor and the output negative terminal.

[0016] Furthermore, the transmitting end also includes a wireless charging transmitting module, and the receiving end also includes a wireless charging receiving module.

[0017] Furthermore, the wireless charging transmitting module includes a transmitting coil, a transmitting end resonant network and an inverter, one end of the transmitting end resonant network is connected to the inverter and the other end is connected to the transmitting coil; the radio receiving module includes a receiving coil, a receiving end resonant network, a rectifier and a DC-DC converter, one end of the receiving end is connected to the receiving coil and the other end is connected to the rectifier, and the other end of the rectifier is connected to the DC-DC converter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of a millimeter wave wireless transmission circuit of a system embodiment of the present invention; Figure 2is a schematic diagram of a signal attenuation circuit of a system embodiment of the present invention; Figure 3 is a schematic diagram of a signal amplification circuit of a system embodiment of the present invention; Figure 4 is a schematic diagram of the principle of a system embodiment of the present invention; Figure 5 1 is a schematic diagram of a connector according to an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The present invention provides a 1394 signal wireless transmission system and connector, which uses a millimeter wave waveguide antenna for high-speed and safe wireless transmission. A hardware processing circuit is used to process the amplitude of the signal. The hardware processing circuit can attenuate the 1394 signal to be sent, and the attenuated signal amplitude is within the millimeter wave chip signal amplitude range. The hardware processing circuit can also amplify the signal received by the millimeter wave waveguide antenna, and the amplified signal amplitude meets the amplitude requirement of the 1394 signal, thereby realizing the wireless transmission of the 1394 signal through the millimeter wave waveguide antenna.

[0020] System Example: In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0021] Due to the transmission characteristics of 1394 signals, a relatively high transmission rate is required, with s400 reaching 400Mbps, s800 reaching 800Mbps, and s1600 reaching 1.6Gbps. However, traditional wireless transmission technologies such as Bluetooth and Wifi generally have lower rates and are difficult to meet the requirements. Coil-based near-field coupling wireless transmission technology is also unable to meet the rate requirements. Therefore, the present invention adopts 60GHz millimeter wave wireless transmission technology that is suitable for high-speed, short-distance data transmission, making full use of the 60GHz spectrum resources, high transmission rate, good anti-interference, security and confidentiality, and can achieve ultra-high-speed wireless transmission between devices. The specific 60GHz millimeter wave wireless transmission circuit is as follows: Figure 1 As shown, the circuit can be integrated into a 2*2mm millimeter wave chip. The chip has low power consumption, only 40mW, high speed, up to 6Gbps, and high integration. It can provide low-power high-speed data transmission safely, simply and quickly.

[0022] Since the signal amplitudes of 1394 signals and millimeter wave chip signals are at two levels, as shown in Table 1, the 1394 signal amplitude is about 600mv~1.6v, as shown in Table 2, the millimeter wave chip amplitude is 160~600mv, and there is no overlap between the two. If the signal is not processed, it cannot be transmitted. Therefore, in order to realize the wireless transmission of 1394 signals using millimeter wave wireless transmission circuits, the signals flowing into and out of the millimeter wave wireless transmission circuits need to be processed when the 1394 signal is transmitted.

[0023] The 1394 signal wireless transmission system of the present invention is provided with a hardware processing circuit, including a signal attenuation circuit and a signal amplification circuit. The signal attenuation circuit is used to attenuate the 1394 signal flowing into the millimeter wave chip so that the attenuated signal amplitude can be processed and sent by the millimeter wave chip; the signal amplification circuit is used to amplify the millimeter wave signal flowing out of the millimeter wave chip so that the amplified signal can be recognized by the 1394 signal.

[0024] Table 1 1394 signal amplitude table Table 2 Millimeter wave chip signal amplitude range The signal attenuation circuit is formed by a combination of resistors and capacitors. The specific signal attenuation circuit is as follows: Figure 2 As shown. The left side of the figure is the output end, and the right side is the input end. The output end and the input end are attenuated at an attenuation ratio of 1:3. The first resistor R81 and the first filter capacitor C79 are connected in series between the positive pole of the input end and the positive pole of the output end of the signal attenuation circuit, and the second resistor R84 and the second filter capacitor C85 are connected in series between the negative pole of the input end and the negative pole of the output end; one end of the third resistor R91 is connected between the positive pole of the input end and the first resistor R81, and the other end is connected between the negative pole of the input end and the second resistor R84; one end of the fourth resistor R76 is connected between the first resistor R81 and the first filter capacitor C79, and the other end is connected between the second resistor R84 and the second filter capacitor C85. The signal amplitude after the attenuation circuit is attenuated to less than 600mv. Make the signal amplitude flowing into the millimeter wave chip within the amplitude range of the millimeter wave chip.

[0025] according to Figure 2 As shown, C79 and C85 are filter capacitors to filter the clutter signal in the signal, and R76, R81, R84, and R91 together form a resistor network, and the attenuation ratio of the output signal amplitude to the input signal amplitude of 1:3 is achieved by designing its resistance value. As the best implementation, the present embodiment includes filter capacitors C79 and C85, which can filter the output signal. As other implementations, the two filter capacitors can also be removed.

[0026] The specific signal amplification circuit is as follows Figure 3 As shown. In this embodiment, the signal is mainly amplified by the DS25BR100 amplifier chip, the input pins 2 and 3 of the amplifier chip are connected to the output pins of the millimeter wave chip, and the output pins 6 and 7 of the amplifier chip are connected to the 1394 signal transmission line. Filter capacitors C83 and C81 are also connected in series between the output pins 6 and 7 of the amplifier chip and the 1394 signal transmission line. After passing through the signal amplification circuit, the signal amplitude is successfully amplified to about 1000mv, which can be recognized by the 1394 signal.

[0027] like Figure 4 As shown, in the 1394 signal wireless transmission system of this embodiment, the millimeter wave wireless transmission circuit uses a 60GHz transparent transmission module. The 1394 signal wireless transmission system includes a hardware processing circuit and a millimeter wave waveguide antenna. The hardware processing circuit includes a signal amplification circuit and a signal attenuation circuit. The millimeter wave waveguide antenna includes a 60GHz transparent transmission module and a PCB antenna. The input end of the signal attenuation circuit is connected to the 1394 signal transmission line, and the output end is connected to the input end of the wired side of the 60GHz transparent transmission module; the output end of the signal amplification circuit is connected to the 1394 signal transmission line, and the input end is connected to the output end of the wired side of the 60GHz transparent transmission module; the wireless side of 60GHz is connected to the PCB antenna.

[0028] The 1394 signal wireless transmission system of the present invention, when receiving a signal, the 60GHz transparent transmission module receives the millimeter wave signal emitted by other 1394 signal wireless transmission systems through the PCB antenna, and transmits it to the signal amplification circuit to amplify the signal amplitude. The amplified signal amplitude is about 1000mv, which can be recognized by the 1394 signal, and then transmitted through the 1394 signal transmission line.

[0029] The 1394 signal wireless transmission system of the present invention, when transmitting a signal, the signal attenuation circuit attenuates the amplitude of the 1394 signal sent from the 1394 signal transmission line, so that the amplitude of the attenuated signal is about 600mv, which can be received and processed by the 60GHz transparent transmission module. The 60GHz transparent transmission module transmits the received attenuated 1394 signal in the form of millimeter waves through the PCB antenna.

[0030] Connector Example: The circuit schematic diagram of the 1394 signal wireless transmission connector of the present invention is as follows: Figure 5As shown. The connector includes a transmitter and a receiver, the transmitter includes a wireless charging transmitter module and a 1394 signal wireless transmission system, and the receiver includes a wireless charging receiver module and a 1394 signal wireless transmission system. The wireless charging module is used to power the 1394 signal wireless transmission system. The 1394 signal wireless transmission systems of the transmitter and the receiver are wirelessly connected through millimeter wave waveguide antennas. The specific structure, circuit principle and beneficial effects of the 1394 signal wireless transmission system have been described in detail in the system embodiment, and will not be repeated in this embodiment. The radio transmitting module is connected to a filter, an inverter, a transmitting end resonant network and a transmitting coil in sequence, and the radio receiving module is connected to a receiving coil, a receiving end resonant network, a rectifier, a DC-DC converter and a load device in sequence.

[0031] In this embodiment, the filter is an EMI filter, the inverter is a DC-HFAC inverter, and the rectifier is a HFAC-DC rectifier.

[0032] Wireless energy is transmitted through the wireless charging transmitter module and the wireless charging receiver module. The transmitter module filters the external 12V power through the EMI filter, and then the DC-HFAC inverter performs the inversion output. After passing through the resonant network, it is transmitted through the transmitting coil. After the receiving coil of the radio receiving module receives it, it passes through the resonant network and is rectified by the HFAC-DC rectifier. The rectified DC power is supplied to the 1394 signal wireless transmission system for power supply.

Claims

1. A 1394 signal wireless transmission system, characterized in that: It includes a hardware processing circuit and a millimeter wave waveguide antenna, wherein the hardware processing circuit includes a signal amplification circuit and a signal attenuation circuit; the signal attenuation circuit is connected to the millimeter wave waveguide antenna and is used to attenuate the 1394 signal to be sent, and the amplitude of the attenuated signal is within the amplitude range of the millimeter wave chip signal, and the wireless signal is sent through the millimeter wave waveguide antenna; the signal amplification circuit is connected to the millimeter wave waveguide antenna and is used to amplify the signal received by the millimeter wave waveguide antenna, and the amplitude of the amplified signal meets the amplitude requirement of the 1394 signal.

2. The 1394 signal wireless transmission system according to claim 1, characterized in that: The signal amplitude at the output end and the signal amplitude at the input end of the signal attenuation circuit are attenuated in a ratio of 1:

3.

3. The 1394 signal wireless transmission system according to claim 2, characterized in that: A first resistor is connected in series between the positive pole of the input end and the positive pole of the output end of the signal attenuation circuit, and a second resistor is connected in series between the negative pole of the input end and the negative pole of the output end; the signal attenuation circuit also includes a third resistor and a fourth resistor, one end of the third resistor is connected to the series connection point between the positive pole of the input end and the first resistor, and the other end is connected to the series connection point between the negative pole of the input end and the second resistor; one end of the fourth resistor is connected to the series connection point of the positive pole of the output end of the first resistor, and the other end is connected to the series connection point between the second resistor and the negative pole of the output end.

4. The 1394 signal wireless transmission system according to claim 3, characterized in that: A first filter capacitor is connected in series between the connection point between the output positive terminal and the first resistor and the output positive terminal of the signal attenuation circuit, and a second filter capacitor is connected in series between the connection point between the output negative terminal and the second resistor and the output negative terminal.

5. The 1394 signal wireless transmission system according to claim 1, characterized in that: The signal amplifying circuit comprises an amplifying chip, and a third filter capacitor and a fourth filter capacitor are respectively connected in series to the positive and negative electrodes of the output end of the amplifying chip.

6. The 1394 signal wireless transmission system according to claim 1, characterized in that: The millimeter wave waveguide antenna includes a 60GHz millimeter wave wireless transmission circuit and a PCB antenna.

7. A 1394 signal wireless transmission connector, characterized in that: It includes a transmitting end and a receiving end, both of which include a 1394 signal wireless transmission system. The 1394 signal wireless transmission system of the transmitting end and the 1394 signal wireless transmission system of the receiving end are wirelessly connected. The 1394 signal wireless transmission system includes a hardware processing circuit and a millimeter wave waveguide antenna. The hardware processing circuit includes a signal amplification circuit and a signal attenuation circuit. The signal attenuation circuit is connected to the millimeter wave waveguide antenna and is used to attenuate the 1394 signal to be sent, and the amplitude of the attenuated signal is within the amplitude range of the millimeter wave chip signal, and the wireless signal is sent through the millimeter wave waveguide antenna. The signal amplification circuit is connected to the millimeter wave waveguide antenna and is used to amplify the signal received by the millimeter wave waveguide antenna, and the amplitude of the amplified signal meets the amplitude requirement of the 1394 signal.

8. The 1394 signal wireless transmission connector according to claim 7, characterized in that: The signal amplitude at the output end and the signal amplitude at the input end of the signal attenuation circuit are attenuated in a ratio of 1:

3.

9. The 1394 signal wireless transmission connector according to claim 8, characterized in that: A first resistor is connected in series between the positive pole of the input end and the positive pole of the output end of the signal attenuation circuit, and a second resistor is connected in series between the negative pole of the input end and the negative pole of the output end; the signal attenuation circuit also includes a third resistor and a fourth resistor, one end of the third resistor is connected to the series point between the positive pole of the input end and the first resistor, and the other end is connected to the series point between the negative pole of the input end and the second resistor; one end of the fourth resistor is connected to the series point between the first resistor and the positive pole of the output end, and the other end is connected to the series point between the second resistor and the negative pole of the output end.

10. The 1394 signal wireless transmission connector according to claim 9, characterized in that: A first filter capacitor is connected in series between the connection point between the output positive terminal and the first resistor and the output positive terminal of the signal attenuation circuit, and a second filter capacitor is connected in series between the connection point between the output negative terminal and the second resistor and the output negative terminal.

11. The 1394 signal wireless transmission connector according to claim 7, characterized in that: The transmitting end further includes a wireless charging transmitting module, and the receiving end further includes a wireless charging receiving module.

12. The 1394 signal wireless transmission connector according to claim 11, characterized in that: The wireless charging transmitting module includes a transmitting coil, a transmitting end resonant network and an inverter; the DC end of the inverter is used to connect to a DC power supply, and the AC end is connected to the transmitting coil through the transmitting end resonant network; the AC end of the rectifier is connected to the receiving coil through the receiving end resonant network, and the DC end outputs DC power through a DC-DC converter.

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