Optical waveguide display circuit

Abstract

The utility model discloses an optical waveguide display circuit, which comprises an MCU and a high-speed differential transceiver, the Bluetooth data transmission end of the high-speed differential transceiver is connected with the Bluetooth data transmission end of a Bluetooth module, the serial data end of the Bluetooth module is connected with the Bluetooth serial data end of the MCU, the data transmission end of the MCU is connected with the data transmission end of a level conversion module, and the level conversion module is connected with the data transmission end of the MCU. The data transmission end of the level conversion module is connected with the data transmission end of the optical machine, the data receiving and transmitting end of the MCU is connected with the data receiving and transmitting end of the high-speed differential transceiver, the LVDS data transmitting end of the high-speed differential transceiver is connected with the LVDS data receiving end of the video bridging chip U7, and the MIPI data transmitting end of the video bridging chip U7 is connected with the MIPI data receiving end of the optical machine. And stable transmission and display can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of optical waveguide display, specifically relates to an optical waveguide display circuit. BACKGROUND

[0002] With the development of automobile technology, people pay more and more attention to the functionality of the automobile. In order to improve the comfort of the vehicle, a display screen is usually arranged on the sun visor, so that the sun visor has a display function. However, the current display screen usually transmits signals through a cable, and the imaging quality is easily disturbed by the external environment, which may result in no display or low display quality, thereby reducing the comfort for viewing. The optical waveguide technology can better display by guiding the light beam in front of the user's eyes through total internal reflection to realize the superimposed display of the image. However, since the traditional display screen is transmitted through a cable, and the signals transmitted by the cable are different from those transmitted by the optical waveguide, there is an urgent need for an optical waveguide display circuit. SUMMARY

[0003] The utility model aims at solving the technical problem existing in the prior art, and particularly innovatively provides an optical waveguide display circuit which can stably transmit and display.

[0004] In order to achieve the above-mentioned purpose, the utility model provides an optical waveguide display circuit, which comprises an MCU and a high-speed differential transceiver, the high-speed differential transceiver Bluetooth data transmission end is connected with the Bluetooth chip Bluetooth data transmission end, the Bluetooth chip serial data end is connected with the MCU Bluetooth serial data end, the MCU data transmission end is connected with the level conversion module data transmission end, the level conversion module data transmission end is connected with the light machine data transmission end, the MCU data transceiver end is connected with the high-speed differential transceiver data transceiver end, the high-speed differential transceiver LVDS data sending end is connected with the video bridge chip U7 LVDS data receiving end, and the video bridge chip U7 MIPI data sending end is connected with the light machine MIPI data receiving end.

[0005] In the above-mentioned scheme, a power supply module is further included, and the power supply module comprises a DC-DC conversion circuit, a voltage reduction circuit, a differential pressure regulation circuit, a battery sampling circuit and a Bluetooth power supply circuit.

[0006] In the above-mentioned scheme, the DC-DC conversion circuit comprises a DC-DC converter, one end of a resistor R115, one end of a capacitor C53, one end of a capacitor C58 and one end of a capacitor C54 are connected with the voltage input end of the DC-DC converter, the other end of the capacitor C53, the other end of the capacitor C58 and the other end of the capacitor C54 are all connected with the power supply ground, and the other end of the resistor R115 is connected with the battery working voltage output end; the enable end of the DC-DC converter is connected with the MCU 3.3V switch enable signal output end and one end of a resistor R51, and the other end of the resistor R51 is connected with the power supply ground.

[0007] One end of the resistance R74 connected to the clock terminal of the DC-DC converter, one end of the capacitor C92 and one end of the capacitor C56 connected to the SS terminal of the DC-DC converter, the other end of the capacitor C92 connected to one end of the resistance R101, one end of the resistance R74, one end of the resistance R101 and one end of the capacitor C56 all connected to the ground terminal of the DC-DC converter are connected to the power supply ground;

[0008] One end of the resistance R52 connected to the bias terminal of the DC-DC converter, one end of the capacitor C48 connected to the other end of the resistance R52, one end of the resistance R64 connected to the other end of the capacitor C48, one end of the capacitor C57 connected to the other end of the resistance R64, and the other end of the capacitor C57 connected to the power supply ground;

[0009] One end of the inductor L6 and the negative electrode of the diode D2 connected to the steady voltage switch output terminal of the DC-DC converter, the positive electrode of the diode D2 connected to the power supply ground, one end of the capacitor C49, one end of the capacitor C50, one end of the capacitor C51 and one end of the capacitor C52 connected to the other end of the inductor L6, the other end of the capacitor C49, the other end of the capacitor C50, the other end of the capacitor C51 and the other end of the capacitor C52 all connected to the power supply ground, the other end of the inductor L6 being the DC-DC conversion circuit DC conversion voltage output terminal and outputting 3.3V voltage, the other end of the inductor L6 also connected to one end of the resistance R65, the other end of the resistance R65 being the MCU power supply terminal of the DC-DC conversion circuit, used for outputting 3.3V voltage, and connected to the internal voltage input terminal of the MCU;

[0010] One end of the resistance R63 and one end of the resistance R61 connected to the feedback terminal of the DC-DC converter, the other end of the resistance R63 connected to the power supply ground, the other end of the resistance R61 connected to one end of the resistance R62, and the other end of the resistance R61 connected to the other end of the inductor L6.

[0011] In the above scheme, the Bluetooth power supply circuit includes the resistance R48, one end of the resistance R48 connected to the MCU Bluetooth power supply enable signal output terminal, the other end of the resistance R48 connected to one end of the resistance R75, one end of the capacitor C98 and the base electrode of the triode Q10, the other end of the resistance R75, the other end of the capacitor C98 and the emitter electrode of the triode Q10 connected to the power supply ground, the collector electrode of the triode Q10 connected to one end of the resistance R44, the other end of the resistance R44 connected to one end of the resistance R43 and the base electrode of the triode Q7, the other end of the resistance R43 and the emitter electrode of the triode Q7 connected to the DC-DC conversion circuit DC conversion voltage output terminal, the collector electrode of the triode Q7 connected to one end of the inductor L21, and the other end of the inductor L21 being the power supply terminal of the Bluetooth power supply circuit, used for outputting 3.3V voltage.

[0012] In the scheme, the voltage reduction circuit includes a voltage reduction chip, the voltage reduction chip is connected with the DC conversion voltage output end of the DC-DC conversion circuit, one end of the resistor R72 and one end of the capacitor C69, the other end of the resistor R72 is connected with the enable end of the voltage reduction chip, the other end of the capacitor C69 is connected with the ground, one end of the capacitor C8 is connected with the NR end of the voltage reduction chip, the other end of the capacitor C8 and the ground end of the voltage reduction chip are both connected with the ground, the voltage reduction output end of the voltage reduction chip is used for outputting 1.8V voltage and is connected with one end of the resistor R13, one end of the capacitor C7 and one end of the capacitor C68, the other end of the capacitor C68 is connected with the ground, the other end of the resistor R13 and the other end of the capacitor C7 are connected with the feedback end of the voltage reduction chip and one end of the resistor R76, the other end of the resistor R76 is connected with the ground;

[0013] The differential pressure regulation circuit includes a low-dropout regulator, the low-dropout regulator is connected with the negative electrode of the diode D13, one end of the capacitor C124, one end of the capacitor C116, one end of the capacitor C118 and one end of the capacitor C123, the other end of the capacitor C124, the other end of the capacitor C116, the other end of the capacitor C118 and the other end of the capacitor C123 are all connected with the ground, the positive electrode of the diode D13 is connected with the battery power supply end, the enable signal end of the low-dropout regulator is connected with the third end of the switch diode D1 and one end of the resistor R116, the other end of the resistor R116 and the ground end of the low-dropout regulator are both connected with the ground, the first end of the switch diode D1 is connected with one end of the resistor R31 and one end of the capacitor C114, the other end of the capacitor C114 is connected with the ground, the other end of the resistor R31 is connected with the low-dropout wake-up signal output end of the wake-up circuit, the second end of the switch diode D1 is connected with the 3.3V switch enable signal output end of the MCU.

[0014] In the scheme, the high-speed differential transceiver Bluetooth serial data transmission end is connected with one end of the resistor R27, the other end of the resistor R27 is connected with the Bluetooth serial data transmission end of the Bluetooth chip, the high-speed differential transceiver Bluetooth serial clock transmission end is connected with one end of the resistor R28, the other end of the resistor R28 is connected with the Bluetooth serial clock transmission end of the Bluetooth chip, the high-speed differential transceiver Bluetooth serial channel transmission end is connected with one end of the resistor R29, the other end of the resistor R29 is connected with the Bluetooth serial channel transmission end of the Bluetooth chip.

[0015] The Bluetooth chip UART sending end is connected with one end of resistor R282 and one end of resistor R279, the other end of resistor R279 is connected with the power supply end of the Bluetooth power supply circuit, and the other end of resistor R282 is connected with the MCU UART receiving end; the Bluetooth chip UART receiving end is connected with one end of resistor R119 and one end of resistor R280, the other end of resistor R280 is connected with the power supply end of the Bluetooth power supply circuit, and the other end of resistor R119 is connected with the MCU UART sending end; the Bluetooth chip reset end is connected with one end of resistor R225, the other end of resistor R225 is connected with the MCU Bluetooth reset end, the Bluetooth chip working voltage input end is connected with the power supply end of the Bluetooth power supply circuit, one end of resistor R284, one end of capacitor C101 and one end of capacitor C107, the other end of capacitor C101 and the other end of capacitor C107 are connected with the power supply ground, the other end of resistor R284 is connected with one end of capacitor C100, the other end of capacitor C100 is connected with the power supply ground, and the Bluetooth chip BT ANT end is connected with one end of capacitor C10 and one end of inductor L23; the other end of inductor L23 is connected with one end of capacitor C102, one end of diode ESD3 and the first end of wiring harness J4, the other end of capacitor C102 and the other end of diode ESD3 are connected with the power supply ground, the second end of wiring harness J4 and the third end of wiring harness J4 are connected with the power supply ground.

[0016] In the scheme, one end of the inductor L2, one end of the capacitor C11, one end of the capacitor C12, one end of the capacitor C13 and one end of the capacitor C14 are connected to the voltage end of the high-speed differential transceiver input / output port, the other end of the capacitor C11, the other end of the capacitor C12, the other end of the capacitor C13 and the other end of the capacitor C14 are connected to the power supply ground, and the other end of the inductor L2 is connected to the DC conversion voltage output end of the DC-DC conversion circuit; one end of the inductor L7, one end of the capacitor C22, one end of the capacitor C23, one end of the capacitor C24, one end of the capacitor C25, one end of the capacitor C26, one end of the capacitor C27 and one end of the capacitor C28 are connected to the working voltage end of the high-speed differential transceiver, the other end of the capacitor C22, the other end of the capacitor C23, the other end of the capacitor C24, the other end of the capacitor C25, the other end of the capacitor C26, the other end of the capacitor C27 and the other end of the capacitor C28 are connected to the power supply ground, and the other end of the inductor L7 is connected to the voltage output end of the voltage reduction circuit; the first end of the high-speed differential transceiver crystal oscillator is connected to one end of the resistor R14, one end of the capacitor C35 and the third end of the crystal oscillator Y2, the fourth end of the crystal oscillator Y2 and the other end of the capacitor C35 are connected to the power supply ground, the second end of the high-speed differential transceiver crystal oscillator is connected to the other end of the resistor R14, one end of the capacitor C29 and the first end of the crystal oscillator Y2, and the second end of the crystal oscillator Y2 and the other end of the capacitor C29 are connected to the power supply ground; the SIOB+ end of the high-speed differential transceiver is connected to one end of the capacitor C38, the other end of the capacitor C38 is connected to one end of the resistor R17, the other end of the resistor R17 is connected to the power supply ground, the SIOB- end of the high-speed differential transceiver is connected to one end of the capacitor C42, the other end of the capacitor C42 is connected to one end of the resistor R18, and the other end of the resistor R18 is connected to the power supply ground; the PWDNB end of the high-speed differential transceiver is connected to one end of the resistor R21, one end of the resistor R230 and one end of the capacitor C153, the other end of the capacitor C153 is connected to the power supply ground, the other end of the resistor R230 is connected to the voltage end of the high-speed differential transceiver input / output port, the other end of the resistor R21 is connected to the MCU PTE1 / LPSPI0 end, the serial clock end of the high-speed differential transceiver is connected to one end of the resistor R81 and one end of the resistor R20, the other end of the resistor R81 is connected to the voltage end of the high-speed differential transceiver input / output port, and the other end of the resistor R20 is connected to the MCU low-voltage differential signal transmission end.The high-speed differential transceiver serial data input end is connected with one end of resistor R11, the other end of resistor R11 is connected with the serial data output end of the Bluetooth chip, the high-speed differential transceiver serial word selection input end is connected with one end of resistor R233, the other end of resistor R233 is connected with the PTD16 end of the MCU, the high-speed differential transceiver I2C serial data receiving end is connected with one end of resistor R30, the other end of resistor R30 is connected with the I2C serial data transmitting end of the MCU, the high-speed differential transceiver I2C serial data clock end is connected with one end of resistor R36, the other end of resistor R36 is connected with the I2C serial data clock end of the MCU, the high-speed differential transceiver general input / output end is connected with one end of resistor R38, the other end of resistor R38 is connected with the low-voltage differential reset end of the MCU, the high-speed differential transceiver general input / output end is connected with one end of resistor R38, the other end of resistor R38 is connected with the low-voltage differential reset end of the MCU, the high-speed differential transceiver high-impedance end is connected with one end of resistor R32, the other end of resistor R32 is connected with the PTE7 end of the MCU, the high-speed differential transceiver digital regulator power supply end is connected with one end of inductor L5, one end of capacitor C15, one end of capacitor C16, one end of capacitor C17, one end of capacitor C18 and one end of capacitor 19, the other end of capacitor C15, the other end of capacitor C16, the other end of capacitor C17, the other end of capacitor C18 and the other end of capacitor 19 are all connected with the power supply ground, and the other end of inductor L5 is connected with the voltage output end of the voltage reduction circuit.

[0017] In the above scheme: the high-speed differential transceiver open-drain lock indication output end is connected with one end of resistor R128 and one end of resistor R22, the other end of resistor R128 is connected with the input / output port voltage end of the high-speed differential transceiver, and the other end of resistor R22 is connected with the DES lock end of the MCU; the high-speed differential transceiver open-drain error indication output end is connected with one end of resistor R26 and one end of resistor R102, the other end of resistor R102 is connected with the input / output port voltage end of the high-speed differential transceiver (U1), and the other end of resistor R26 is connected with the DES error end of the MCU.

[0018] The video bridging chip U7 MIPI data transmission end is connected with the MIPI data transmission end of the optical machine; the video bridging chip U7 video conversion clock end is connected with one end of resistor R117, the other end of resistor R117 is connected with one end of resistor R118 and the video conversion clock input end of the level converter U14, the video conversion clock output end of the level converter U14 is connected with the video conversion clock input end of the optical machine, and the other end of resistor R118 is connected with the direct current conversion voltage output end of the DC-DC conversion circuit.

[0019] The video bridge chip U7 video conversion data end is connected with one end of the resistance R122, the other end of the resistance R122 is connected with one end of the resistance R123 and the level converter U14 video conversion data input end, the level converter U14 video conversion data output end is connected with the light machine video conversion data input end, and the other end of the resistance R123 is connected with the DC-DC conversion circuit DC conversion voltage output end.

[0020] In conclusion, the beneficial effects of the present application are: the electric signal can be converted into the optical signal stably, so that the display effect is guaranteed, and the viewing comfort is improved. The Bluetooth chip can be connected with the mobile phone, so that the video liked by the user can be played, and the comfort is improved. The level conversion module can convert various electric signals, so that the signal transmission between the video bridge chip and the light machine is realized. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The system diagram of the present application is shown in the figure.

[0022] Figure 2 The circuit diagram of the DC-DC conversion circuit is shown in the figure.

[0023] Figure 3 The circuit diagram of the voltage reduction circuit is shown in the figure.

[0024] Figure 4is the circuit diagram of the Bluetooth power supply module.

[0025] Figure 5 is the circuit diagram of the MCU.

[0026] Figure 6 is the circuit diagram of the high-speed differential transceiver.

[0027] Figure 7 is the circuit diagram of the Bluetooth chip.

[0028] Figure 8 is the circuit diagram of the video bridge chip U7.

[0029] Figure 9 is the circuit diagram of the level converter U13.

[0030] Figure 10 is the circuit diagram of the level converter U14. DETAILED DESCRIPTION

[0031] The utility model will be further described below by examples and in conjunction with the drawings:

[0032] As Figures 1-10 shown, an optical waveguide display circuit includes MCU U6 and high-speed differential transceiver U1, the high-speed differential transceiver U1 Bluetooth data transmission end is connected with the Bluetooth chip U3 Bluetooth data transmission end, the Bluetooth chip U3 serial data end is connected with the MCU U6 Bluetooth serial data end, the MCU U6 data transmission end is connected with the level conversion module data transmission end, the level conversion module data transmission end is connected with the optical machine data transmission end, the MCU U6 data transceiver end is connected with the high-speed differential transceiver U1 data transceiver end, the high-speed differential transceiver U1 LVDS data sending end is connected with the video bridge chip U7 LVDS data receiving end, and the video bridge chip U7 MIPI data sending end is connected with the optical machine MIPI data receiving end.

[0033] In the above scheme: the power supply module further includes a DC-DC conversion circuit, a step-down circuit, a differential pressure regulating circuit, a battery sampling circuit and a Bluetooth power supply circuit.

[0034] In the above scheme: the DC-DC conversion circuit includes a DC-DC converter U2, the DC-DC converter U2 voltage input end is connected with one end of a resistor R115, one end of a capacitor C53, one end of a capacitor C58 and one end of a capacitor C54, the other end of the capacitor C53, the other end of the capacitor C58 and the other end of the capacitor C54 are all connected with a power supply ground, and the other end of the resistor R115 is connected with a battery working voltage output end; the DC-DC converter U2 enable end is connected with a MCU U6 3.3V switch enable signal output end and one end of a resistor R51, and the other end of the resistor R51 is connected with a power supply ground.

[0035] The one end of the DC-DC converter U2 clock terminal is connected with the one end of the resistance R74, the one end of the DC-DC converter U2 SS terminal is connected with the one end of the capacitor C92 and the one end of the capacitor C56, the other end of the capacitor C92 is connected with the one end of the resistance R101, the one end of the resistance R74, the one end of the resistance R101 and the one end of the capacitor C56 are all connected with the ground terminal of the DC-DC converter U2, and the ground terminal is connected with the power supply ground;

[0036] The one end of the DC-DC converter U2 bias terminal is connected with the one end of the resistance R52, the other end of the resistance R52 is connected with the one end of the capacitor C48, the other end of the capacitor C48 is connected with the one end of the resistance R64, the other end of the resistance R64 is connected with the one end of the capacitor C57, and the other end of the capacitor C57 is connected with the power supply ground;

[0037] The one end of the DC-DC converter U2 voltage stabilizing switch output terminal is connected with the one end of the inductor L6 and the negative electrode of the diode D2, the positive electrode of the diode D2 is connected with the power supply ground, the other end of the inductor L6 is connected with the one end of the capacitor C49, the one end of the capacitor C50, the one end of the capacitor C51 and the one end of the capacitor C52, the other end of the capacitor C49, the other end of the capacitor C50, the other end of the capacitor C51 and the other end of the capacitor C52 are all connected with the power supply ground, the other end of the inductor L6 is the DC-DC conversion circuit DC conversion voltage output terminal, and outputs 3.3V voltage, the other end of the inductor L6 is also connected with the one end of the resistance R65, the other end of the resistance R65 is the MCU power supply terminal of the DC-DC conversion circuit, is used for outputting 3.3V voltage, and is connected with the internal voltage input terminal of the MCU U6;

[0038] The one end of the DC-DC converter U2 feedback terminal is connected with the one end of the resistance R63 and the one end of the resistance R61, the other end of the resistance R63 is connected with the power supply ground, the other end of the resistance R61 is connected with the one end of the resistance R62, and the other end of the resistance R61 is connected with the other end of the inductor L6.

[0039] In the above scheme, the Bluetooth power supply circuit includes the resistance R48, the one end of the resistance R48 is connected with the Bluetooth power supply enable signal output terminal of the MCU U6, the other end of the resistance R48 is connected with the one end of the resistance R75, the one end of the capacitor C98 and the base electrode of the triode Q10, the other end of the resistance R75, the other end of the capacitor C98 and the emitter electrode of the triode Q10 are connected with the power supply ground, the collector electrode of the triode Q10 is connected with the one end of the resistance R44, the other end of the resistance R44 is connected with the one end of the resistance R43 and the base electrode of the triode Q7, the other end of the resistance R43 and the emitter electrode of the triode Q7 are connected with the DC-DC conversion circuit DC conversion voltage output terminal, and the collector electrode of the triode Q7 is connected with the one end of the inductor L21, the other end of the inductor L21 is the power supply terminal of the Bluetooth power supply circuit, and is used for outputting 3.3V voltage.

[0040] In the above scheme: the voltage reduction circuit includes a voltage reduction chip U4, the voltage reduction chip U4 is connected with the DC conversion voltage output end of the DC-DC conversion circuit, one end of the resistor R72 and one end of the capacitor C69, the other end of the resistor R72 is connected with the enable end of the voltage reduction chip U4, the other end of the capacitor C69 is connected with the power supply ground, one end of the capacitor C8 connected with the NR end of the voltage reduction chip U4, the other end of the capacitor C8 and the ground end of the voltage reduction chip U4 are both connected with the power supply ground, the voltage reduction output end of the voltage reduction chip U4 is used for outputting 1.8V voltage, and is connected with one end of the resistor R13, one end of the capacitor C7 and one end of the capacitor C68, the other end of the capacitor C68 is connected with the power supply ground, the other end of the resistor R13 and the other end of the capacitor C7 are connected with the feedback end of the voltage reduction chip U4 and one end of the resistor R76, the other end of the resistor R76 is connected with the power supply ground;

[0041] The differential pressure regulation circuit includes a low-dropout regulator U5, the low-dropout regulator U5 is connected with the negative electrode of the diode D13, one end of the capacitor C124, one end of the capacitor C116, one end of the capacitor C118 and one end of the capacitor C123, the other end of the capacitor C124, the other end of the capacitor C116, the other end of the capacitor C118 and the other end of the capacitor C123 are all connected with the power supply ground, the positive electrode of the diode D13 is connected with the battery power supply end, the enable signal end of the low-dropout regulator U5 is connected with the third end of the switch diode D1 and one end of the resistor R116, the other end of the resistor R116 and the ground end of the low-dropout regulator U5 are both connected with the power supply ground, the first end of the switch diode D1 is connected with one end of the resistor R31 and one end of the capacitor C114, the other end of the capacitor C114 is connected with the power supply ground, the other end of the resistor R31 is connected with the low-voltage differential wake-up signal output end of the wake-up circuit, and the second end of the switch diode D1 is connected with the 63.3V switch enable signal output end of the MCU.

[0042] In the above scheme: the high-speed differential transceiver U1 is connected with one end of the resistor R27, the other end of the resistor R27 is connected with the Bluetooth serial data transmission end of the Bluetooth chip U3, one end of the resistor R28 is connected with the Bluetooth serial clock transmission end of the high-speed differential transceiver U1, the other end of the resistor R28 is connected with the Bluetooth serial clock transmission end of the Bluetooth chip U3, one end of the resistor R29 is connected with the Bluetooth serial channel transmission end of the high-speed differential transceiver U1, and the other end of the resistor R29 is connected with the Bluetooth serial channel transmission end of the Bluetooth chip U3;

[0043] The Bluetooth chip U3 UART sending end is connected with one end of the resistor R282 and one end of the resistor R279, the other end of the resistor R279 is connected with the power supply end of the Bluetooth power supply circuit, the other end of the resistor R282 is connected with the MCUU6 UART receiving end; the Bluetooth chip U3 UART receiving end is connected with one end of the resistor R119 and one end of the resistor R280, the other end of the resistor R280 is connected with the power supply end of the Bluetooth power supply circuit, the other end of the resistor R119 is connected with the MCUU6 UART sending end; the Bluetooth chip U3 reset end is connected with one end of the resistor R225, the other end of the resistor R225 is connected with the MCUU6 Bluetooth reset end, the working voltage input end of the Bluetooth chip U3 is connected with the power supply end of the Bluetooth power supply circuit, one end of the resistor R284, one end of the capacitor C101 and one end of the capacitor C107, the other end of the capacitor C101 and the other end of the capacitor C107 are connected with the power supply ground, the other end of the resistor R284 is connected with one end of the capacitor C100, the other end of the capacitor C100 is connected with the power supply ground, the Bluetooth chip U3 BT ANT end is connected with one end of the capacitor C10 and one end of the inductor L23, the other end of the inductor L23 is connected with one end of the capacitor C102, one end of the diode ESD3 and the first end of the wiring harness J4, the other end of the capacitor C102 and the other end of the diode ESD3 are connected with the power supply ground, the second end of the wiring harness J4 and the third end of the wiring harness J4 are connected with the power supply ground.

[0044] In the above scheme: the input / output port voltage end of the high-speed differential transceiver U1 is connected with one end of the inductor L2, one end of the capacitor C11, one end of the capacitor C12, one end of the capacitor C13 and one end of the capacitor C14, the other end of the capacitor C11, the other end of the capacitor C12, the other end of the capacitor C13 and the other end of the capacitor C14 are all connected with the power supply ground, and the other end of the inductor L2 is connected with the direct current conversion voltage output end of the DC-DC conversion circuit; the working voltage end of the high-speed differential transceiver U1 is connected with one end of the inductor L7, one end of the capacitor C22, one end of the capacitor C23, one end of the capacitor C24, one end of the capacitor C25, one end of the capacitor C26, one end of the capacitor C27 and one end of the capacitor C28, the other end of the capacitor C22, the other end of the capacitor C23, the other end of the capacitor C24, the other end of the capacitor C25, the other end of the capacitor C26, the other end of the capacitor C27 and the other end of the capacitor C28 are all connected with the power supply ground, and the other end of the inductor L7 is connected with the voltage output end of the voltage reduction circuit; the first end of the crystal oscillator Y2 of the high-speed differential transceiver U1 is connected with one end of the resistor R14, one end of the capacitor C35 and the third end of the crystal oscillator Y2, the fourth end of the crystal oscillator Y2 and the other end of the capacitor C35 are connected with the power supply ground, the second end of the crystal oscillator Y2 of the high-speed differential transceiver U1 is connected with the other end of the resistor R14, one end of the capacitor C29 and the first end of the crystal oscillator Y2, the second end of the crystal oscillator Y2 and the other end of the capacitor C29 are all connected with the power supply ground; the SIOB+ end of the high-speed differential transceiver U1 is connected with one end of the capacitor C38, the other end of the capacitor C38 is connected with one end of the resistor R17, the other end of the resistor R17 is connected with the power supply ground, the SIOB- end of the high-speed differential transceiver U1 is connected with one end of the capacitor C42, the other end of the capacitor C42 is connected with one end of the resistor R18, the other end of the resistor R18 is connected with the power supply ground; the PWDNB end of the high-speed differential transceiver U1 is connected with one end of the resistor R21, one end of the resistor R230 and one end of the capacitor C153, the other end of the capacitor C153 is connected with the power supply ground, the other end of the resistor R230 is connected with the input / output port voltage end of the high-speed differential transceiver U1, the other end of the resistor R21 is connected with the MCUU6PTE1 / LPSPI0 end, the serial clock end of the high-speed differential transceiver U1 is connected with one end of the resistor R81 and one end of the resistor R20, the other end of the resistor R81 is connected with the input / output port voltage end of the high-speed differential transceiver U1, and the other end of the resistor R20 is connected with the low voltage differential signal transmission end of the MCUU6.The high-speed differential transceiver U1 serial data input end is connected with one end of the resistor R11, the other end of the resistor R11 is connected with the serial data output end of the Bluetooth chip U3, the high-speed differential transceiver U1 serial word selection input end is connected with one end of the resistor R233, the other end of the resistor R233 is connected with the PTD16 end of the MCU U6, the high-speed differential transceiver U1 I2C serial data receiving end is connected with one end of the resistor R30, the other end of the resistor R30 is connected with the I2C serial data transmitting end of the MCU U6, the high-speed differential transceiver U1 I2C serial data clock end is connected with one end of the resistor R36, the other end of the resistor R36 is connected with the I2C serial data clock end of the MCU U6, the high-speed differential transceiver U1 general input and output end is connected with one end of the resistor R38, the other end of the resistor R38 is connected with the low voltage differential reset end of the MCU U6, the high-speed differential transceiver U1 general input and output end is connected with one end of the resistor R38, the other end of the resistor R38 is connected with the low voltage differential reset end of the MCU U6, the high-speed differential transceiver U1 high impedance end is connected with one end of the resistor R32, the other end of the resistor R32 is connected with the PTE7 end of the MCU U6, the high-speed differential transceiver U1 digital regulator power supply end is connected with one end of the inductor L5, one end of the capacitor C15, one end of the capacitor C16, one end of the capacitor C17, one end of the capacitor C18 and one end of the capacitor 19, the other end of the capacitor C15, the other end of the capacitor C16, the other end of the capacitor C17, the other end of the capacitor C18 and the other end of the capacitor 19 are all connected with the power supply ground, and the other end of the inductor L5 is connected with the voltage output end of the voltage reduction circuit.

[0045] In the above scheme, the high-speed differential transceiver U1 open drain lock indication output end is connected with one end of the resistor R128 and one end of the resistor R22, the other end of the resistor R128 is connected with the input / output port voltage end of the high-speed differential transceiver U1, the other end of the resistor R22 is connected with the DES lock end of the MCU U6, the high-speed differential transceiver U1 open drain error indication output end is connected with one end of the resistor R26 and one end of the resistor R102, the other end of the resistor R102 is connected with the input / output port voltage end of the high-speed differential transceiver (U1), and the other end of the resistor R26 is connected with the DES error end of the MCU U6.

[0046] The video bridge chip U7 MIPI data transmission end is connected with the MIPI data transmission end of the optical machine, the video bridge chip U7 video conversion clock end is connected with one end of the resistor R117, the other end of the resistor R117 is connected with one end of the resistor R118 and the video conversion clock input end of the level converter U14, the video conversion clock output end of the level converter U14 is connected with the video conversion clock input end of the optical machine, and the other end of the resistor R118 is connected with the direct current conversion voltage output end of the DC-DC conversion circuit.

[0047] The one end of the video bridge chip U7 video conversion data terminal connects a resistor R122, the other end of the resistor R122 connects one end of a resistor R123 and a level converter U14 video conversion data input terminal, the level converter U14 video conversion data output terminal connects a light machine video conversion data input terminal, the other end of the resistor R123 connects a DC-DC conversion circuit DC conversion voltage output terminal; the one end of the video bridge chip U7 video conversion reset terminal connects a resistor R124, the other end of the resistor R124 connects an MCU U6 video conversion reset terminal, the one end of the video bridge chip U7 INT terminal connects a resistor R136, the other end of the resistor R136 connects an MCU U6 CONV INT terminal; the MCU U6 DLP Display ON terminal connects a level converter U13 DLP Display ON terminal, the level converter U13 Display ON terminal connects a light machine Display ON terminal; the MCU U6 MCU DLP Status terminal connects a level converter U13 MCU DLP Status terminal, the level converter U13 DLP Status terminal connects a light machine DLP Status terminal; the MCU U6 MCU Option 1 terminal connects a level converter U13 MCU Option 1 terminal, the level converter U13 Option 1 terminal connects a light machine Option 1 terminal; the MCU U6 MCU PROG EN terminal connects a level converter U14 PROG EN terminal, the level converter U14 SPI_Flash_PROG_EN terminal connects a light machine SPI_Flash_PROG_EN terminal, the MCU U6 MCU FPGA RST terminal connects a level converter U14 MCU FPGA RST terminal, and the level converter U14 FPGA RST terminal connects a light machine FPGA RST terminal.

Claims

1. An optical waveguide display circuit, characterized by: It includes MCU (U6) and high-speed differential transceiver (U1), the high-speed differential transceiver (U1) bluetooth data transmission end connects bluetooth chip (U3) bluetooth data transmission end, the bluetooth chip (U3) serial data end connects MCU (U6) bluetooth serial data end, the MCU (U6) data transmission end connects the data transmission end of level conversion module, the data transmission end of level conversion module connects the data transmission end of optical machine, the MCU (U6) data transceiver end connects the data transceiver end of high-speed differential transceiver (U1), the LVDS data sending end of high-speed differential transceiver (U1) connects the LVDS data receiving end of video bridging chip U7, and the MIPI data sending end of video bridging chip U7 connects the MIPI data receiving end of optical machine.

2. An optical waveguide display circuit according to claim 1, wherein: It also includes a power supply module, which includes a DC-DC conversion circuit, a step-down circuit, a differential pressure regulating circuit, a battery sampling circuit and a Bluetooth power supply circuit.

3. An optical waveguide display circuit according to claim 2, wherein: The DC-DC converter (U2) voltage input end is connected with one end of resistor R115, one end of capacitor C53, one end of capacitor C58 and one end of capacitor C54, the other end of capacitor C53, the other end of capacitor C58 and the other end of capacitor C54 are all connected with power ground, and the other end of resistor R115 is connected with battery working voltage output end; the DC-DC converter (U2) enable end is connected with 3.3V switch enable signal output end of MCU (U6) and one end of resistor R51, and the other end of resistor R51 is connected with power ground; The DC-DC converter (U2) clock end is connected with one end of resistor R74, and the DC-DC converter (U2) SS end is connected with one end of capacitor C92 and one end of capacitor C56, the other end of capacitor C92 is connected with one end of resistor R101, one end of resistor R74, one end of resistor R101 and one end of capacitor C56 are all connected with power ground; The DC-DC converter (U2) bias end is connected with one end of resistor R52, the other end of resistor R52 is connected with one end of capacitor C48, one end of capacitor C48 is connected with one end of resistor R64, the other end of resistor R64 is connected with one end of capacitor C57, and the other end of capacitor C57 is connected with power ground; The DC-DC converter (U2) voltage output end is connected with one end of inductor L6 and negative electrode of diode D2, the positive electrode of diode D2 is connected with power ground, the other end of inductor L6 is connected with one end of capacitor C49, one end of capacitor C50, one end of capacitor C51 and one end of capacitor C52, the other end of capacitor C49, the other end of capacitor C50, the other end of capacitor C51 and the other end of capacitor C52 are all connected with power ground, the other end of inductor L6 is the DC-DC conversion voltage output end of DC-DC conversion circuit and outputs 3.3V voltage, the other end of inductor L6 is also connected with one end of resistor R65, the other end of resistor R65 is the MCU power supply end of DC-DC conversion circuit, which is used for outputting 3.3V voltage and is connected with internal voltage input end of MCU (U6). The feedback end of the DC-DC converter (U2) is connected with one end of resistor R63 and one end of resistor R61, the other end of resistor R63 is connected with the power supply ground, the other end of resistor R61 is connected with one end of resistor R62, and the other end of inductor L6 is connected with the other end of resistor R61.

4. An optical waveguide display circuit according to claim 3, wherein: The Bluetooth power supply circuit comprises resistor R48, one end of resistor R48 is connected with the Bluetooth power supply enable signal output end of MCU (U6), the other end of resistor R48 is connected with one end of resistor R75, one end of capacitor C98 and the base of transistor Q10, the other end of resistor R75, the other end of capacitor C98 and the emitter of transistor Q10 are connected with the power supply ground, the collector of transistor Q10 is connected with one end of resistor R44, the other end of resistor R44 is connected with one end of resistor R43 and the base of transistor Q7, the other end of resistor R43 and the emitter of transistor Q7 are connected with the DC conversion voltage output end of the DC-DC conversion circuit, the collector of transistor Q7 is connected with one end of inductor L21, and the other end of inductor L21 is the power supply end of the Bluetooth power supply circuit, used for outputting 3.3V voltage.

5. An optical waveguide display circuit according to claim 3, wherein: The step-down circuit comprises step-down chip (U4), the power supply input end of step-down chip (U4) is connected with the DC conversion voltage output end of the DC-DC conversion circuit, one end of resistor R72 and one end of capacitor C69, the other end of resistor R72 is connected with the enable end of step-down chip (U4), the other end of capacitor C69 is connected with the power supply ground, one end of capacitor C8 is connected with the NR end of step-down chip (U4), the other end of capacitor C8 and the ground end of step-down chip (U4) are both connected with the power supply ground, the step-down output end of step-down chip (U4) is used for outputting 1.8V voltage and is connected with one end of resistor R13, one end of capacitor C7 and one end of capacitor C68, the other end of capacitor C68 is connected with the power supply ground, the other end of resistor R13 and the other end of capacitor C7 are connected with the feedback end of step-down chip (U4) and one end of resistor R76, and the other end of resistor R76 is connected with the power supply ground. The differential pressure regulation circuit comprises low dropout regulator (U5), the power supply input end of low dropout regulator (U5) is connected with the negative electrode of diode D13, one end of capacitor C124, one end of capacitor C116, one end of capacitor C118 and one end of capacitor C123, the other end of capacitor C124, the other end of capacitor C116, the other end of capacitor C118 and the other end of capacitor C123 are all connected with the power supply ground, the positive electrode of diode D13 is connected with the battery power supply end, the enable signal end of low dropout regulator (U5) is connected with the third end of switch diode D1 and one end of resistor R116, the other end of resistor R116 and the ground end of low dropout regulator (U5) are both connected with the power supply ground, the first end of switch diode D1 is connected with one end of resistor R31 and one end of capacitor C114, the other end of capacitor C114 is connected with the power supply ground, the other end of resistor R31 is connected with the low dropout wake-up signal output end of the wake-up circuit, and the second end of switch diode D1 is connected with the 3.3V switch enable signal output end of MCU (U6).

6. An optical waveguide display circuit according to claim 4, wherein: The high-speed differential transceiver (U1) Bluetooth serial data transmission end connects one end of resistance R27, the other end of resistance R27 connects the Bluetooth chip (U3) Bluetooth serial data transmission end, the high-speed differential transceiver (U1) Bluetooth serial clock transmission end connects one end of resistance R28, the other end of resistance R28 connects the Bluetooth chip (U3) Bluetooth serial clock transmission end, the high-speed differential transceiver (U1) Bluetooth serial channel transmission end connects one end of resistance R29, the other end of resistance R29 connects the Bluetooth chip (U3) Bluetooth serial channel transmission end; The Bluetooth chip (U3) UART sending end connects one end of resistance R282 and one end of resistance R279, the other end of resistance R279 connects the power supply end of the Bluetooth power supply circuit, and the other end of the resistance R282 connects the MCU (U6) UART receiving end; the Bluetooth chip (U3) UART receiving end connects one end of resistance R119 and one end of resistance R280, the other end of resistance R280 connects the power supply end of the Bluetooth power supply circuit, and the other end of resistance R119 connects the MCU (U6) UART sending end; the Bluetooth chip (U3) reset end connects one end of resistance R225, the other end of resistance R225 connects the MCU (U6) Bluetooth reset end, the Bluetooth chip (U3) working voltage input end connects the power supply end of the Bluetooth power supply circuit, one end of resistance R284, one end of capacitor C101 and one end of capacitor C107, the other end of capacitor C101 and the other end of capacitor C107 connect the power supply ground, the other end of resistance R284 connects one end of capacitor C100, the other end of capacitor C100 connects the power supply ground, the Bluetooth chip (U3) BT_ANT end connects one end of capacitor C10 and one end of inductor L23, the other end of inductor L23 connects one end of capacitor C102, one end of diode ESD3 and the first end of wiring row J4, the other end of capacitor C102, diode ESD3 and the power supply ground are connected, the second end of wiring row J4 and the third end of wiring row J4 are connected to the power supply ground.

7. An optical waveguide display circuit according to claim 5, wherein: The high-speed differential transceiver (U1) input / output port voltage end is connected with one end of inductor L2, one end of capacitor C11, one end of capacitor C12, one end of capacitor C13 and one end of capacitor C14, the other end of capacitor C11, the other end of capacitor C12, the other end of capacitor C13 and the other end of capacitor C14 are all connected with power supply ground, and the other end of inductor L2 is connected with the direct current conversion voltage output end of the DC-DC conversion circuit; the high-speed differential transceiver (U1) working voltage end is connected with one end of inductor L7, one end of capacitor C22, one end of capacitor C23, one end of capacitor C24, one end of capacitor C25, one end of capacitor C26, one end of capacitor C27 and one end of capacitor C28, the other end of capacitor C22, the other end of capacitor C23, the other end of capacitor C24, the other end of capacitor C25, the other end of capacitor C26, the other end of capacitor C27 and the other end of capacitor C28 are all connected with power supply ground, and the other end of inductor L7 is connected with the voltage output end of the voltage reduction circuit; the high-speed differential transceiver (U1) crystal oscillator first end is connected with one end of resistor R14, one end of capacitor C35 and the third end of crystal oscillator Y2, the fourth end of crystal oscillator Y2 and the other end of capacitor C35 are connected with power supply ground, and the high-speed differential transceiver (U1) crystal oscillator second end is connected with the other end of resistor R14, one end of capacitor C29 and the first end of crystal oscillator Y2, the second end of crystal oscillator Y2 and the other end of capacitor C29 are all connected with power supply ground; the high-speed differential transceiver (U1) SIOB+ end is connected with one end of capacitor C38, the other end of capacitor C38 is connected with one end of resistor R17, the other end of resistor R17 is connected with power supply ground, the high-speed differential transceiver (U1) SIOB- end is connected with one end of capacitor C42, the other end of capacitor C42 is connected with one end of resistor R18, the other end of resistor R18 is connected with power supply ground; the high-speed differential transceiver (U1) PWDNB end is connected with one end of resistor R21, one end of resistor R230 and one end of capacitor C153, the other end of capacitor C153 is connected with power supply ground, the other end of resistor R230 is connected with the input / output port voltage end of the high-speed differential transceiver (U1), the other end of resistor R21 is connected with the PTE1 / LPSPI0 end of MCU (U6), the high-speed differential transceiver (U1) serial clock end is connected with one end of resistor R81 and one end of resistor R20, the other end of resistor R81 is connected with the input / output port voltage end of the high-speed differential transceiver (U1), and the other end of resistor R20 is connected with the low voltage differential signal transmission end of MCU (U6).The high-speed differential transceiver (U1) serial data input end connects one end of resistance R11, the other end of the resistance R11 connects the serial data output end of Bluetooth chip (U3), the high-speed differential transceiver (U1) serial word selection input end connects one end of resistance R233, the other end of the resistance R233 connects the MCU (U6) PTD16 end, the high-speed differential transceiver (U1) I2C serial data receiving end connects one end of resistance R30, the other end of the resistance R30 connects the MCU (U6) I2C serial data transmitting end, the high-speed differential transceiver (U1) I2C serial data clock end connects one end of resistance R36, the other end of the resistance R36 connects the MCU (U6) I2C serial data clock end, the high-speed differential transceiver (U1) general input output end connects one end of resistance R38, the other end of the resistance R38 connects the MCU (U6) low voltage differential reset end, the high-speed differential transceiver (U1) high impedance end connects one end of resistance R32, the other end of the resistance R32 connects the MCU (U6) PTE7 end, the high-speed differential transceiver (U1) digital regulator power end connects one end of inductance L5, one end of capacitor C15, one end of capacitor C16, one end of capacitor C17, one end of capacitor C18 and one end of capacitor 19, the other end of capacitor C15, the other end of capacitor C16, the other end of capacitor C17, the other end of capacitor C18 and the other end of capacitor 19 are all connected to the power supply ground, and the other end of the inductance L5 is connected to the voltage output end of the voltage reduction circuit.

8. An optical waveguide display circuit according to claim 7, wherein: The high-speed differential transceiver (U1) open drain lock indication output end connects one end of resistance R128 and one end of resistance R22, the other end of resistance R128 connects the input / output port voltage end of the high-speed differential transceiver (U1), and the other end of resistance R22 connects the DES lock end of the MCU (U6); the high-speed differential transceiver (U1) open drain error indication output end connects one end of resistance R26 and one end of resistance R102, the other end of resistance R102 connects the input / output port voltage end of the high-speed differential transceiver (U1), and the other end of resistance R26 connects the DES error end of the MCU (U6); The video bridge chip U7 MIPI data transmission end is connected with the MIPI data transmission end of the light machine; one end of the video bridge chip U7 video conversion clock end is connected with one end of the resistor R117, the other end of the resistor R117 is connected with one end of the resistor R118 and the video conversion clock input end of the level converter U14, the video conversion clock output end of the level converter U14 is connected with the video conversion clock input end of the light machine, and the other end of the resistor R118 is connected with the direct current conversion voltage output end of the DC-DC conversion circuit. The video bridge chip U7 video conversion data end is connected with one end of the resistor R122, the other end of the resistor R122 is connected with one end of the resistor R123 and the video conversion data input end of the level converter U14, the video conversion data output end of the level converter U14 is connected with the video conversion data input end of the light machine, and the other end of the resistor R123 is connected with the direct current conversion voltage output end of the DC-DC conversion circuit; one end of the video bridge chip U7 video conversion reset end is connected with one end of the resistor R124, the other end of the resistor R124 is connected with the video conversion reset end of the MCU (U6), one end of the video bridge chip U7 INT end is connected with one end of the resistor R136, the other end of the resistor R136 is connected with the CONV INT end of the MCU (U6); the DLP Display ON end of the MCU (U6) is connected with the DLP Display ON end of the level converter U13, the Display ON end of the level converter U13 is connected with the Display ON end of the light machine; the MCU DLP Status end of the MCU (U6) is connected with the MCU DLP Status end of the level converter U13, the DLP Status end of the level converter U13 is connected with the DLP Status end of the light machine; the MCU Option 1 end of the MCU (U6) is connected with the MCU Option 1 end of the level converter U13, the Option 1 end of the level converter U13 is connected with the Option 1 end of the light machine; the MCU PROG EN end of the MCU (U6) is connected with the PROG EN end of the level converter U14, the SPI_Flash_PROG_EN end of the level converter U14 is connected with the SPI_Flash_PROG_EN end of the light machine, the MCU FPGA RST end of the MCU (U6) is connected with the MCU FPGA RST end of the level converter U14, and the FPGA RST end of the level converter U14 is connected with the FPGA RST end of the light machine.

Images