CN217444048U

CN217444048U - Lane information issuing device based on TFT screen

Info

Publication number: CN217444048U
Application number: CN202122542387.1U
Authority: CN
Inventors: 周邓; 黄莉; 陈伟; 李强; 毛友财; 何静; 于江; 彭小洪
Original assignee: Chongqing Chaungdi Technology Development Co ltd
Current assignee: Chongqing Chaungdi Technology Development Co ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-09-16
Anticipated expiration: 2031-10-21

Abstract

The utility model discloses a lane information issuing device based on TFT screen, including central processing module and with TFT display screen module, button module, pilot lamp module, the module that resets, flash memory module, power module, RS485 module and RS232 serial ports module that central processing module connects, TFT display screen module includes the TFT display screen, and the RS485 module is connected with the lane display screen. The central processing module receives pre-stored display information of the RS232 serial port module and stores the pre-stored display information in the flash memory module, the TFT display screen previews the display information to be issued, and the central processing module issues the pre-stored display information stored in the flash memory module on the lane display screen through the RS485 module. The device has rich and diversified display contents, and can change the display information in real time according to the lane information; the number of wires is reduced, the use amount of the wires is reduced, and the cost of the wires is saved; the construction and maintenance are simplified, great convenience is brought to site construction and later maintenance, and the maintenance cost is reduced.

Description

Lane information issuing device based on TFT screen

Technical Field

The utility model relates to an information display technical field especially relates to a lane information issuing device based on TFT screen.

Background

At present, a toll station on a toll road is generally provided with a lane information display board which generally displays related lane information to provide reference for a driver, so that the toll station is very convenient, but the following defects exist at present:

1. the existing traditional technology adopts a lane controller to add an IO board card or uses a switch panel to switch display information pre-stored in a display screen by utilizing a dry contact technology.

2. The display content is fixed, the pre-stored content is too little, and the method cannot be completely suitable for the actual use condition of the toll lanes of all toll stations.

3. The display content is too much, and the number of the main contact point wiring for switching lane information is more.

4. If the display content needs to be changed, the display screen main board needs to be detached, the operation is too complex, and the time cost and the labor cost are too high.

Therefore, those skilled in the art have made efforts to develop a lane information distribution apparatus that facilitates information preview and has a simple structure.

Disclosure of Invention

In view of the above-mentioned defect of prior art, the utility model aims to solve the technical problem that a lane information issuing device based on TFT screen that anti-oil spilling is effectual, with low costs, light in weight is provided.

In order to realize the above purpose, the utility model provides a lane information issuing device based on TFT screen, including central processing module and with TFT display screen module, button module, pilot lamp module, the module that resets, flash memory module, power module, RS485 module and RS232 serial ports module that central processing module connects, TFT display screen module includes the TFT display screen, the RS485 module is connected with the lane display screen.

The power module supplies power for the whole device, the pilot lamp module shows operating condition, the button module is used for switching display information, the module that resets is used for restarting and resets whole device, central processing module receives RS232 serial port module and prestores the display information, saves it in the flash memory module, the display information that will release is previewed to the TFT display screen on the TFT display screen module, central processing module will save through the RS485 module prestores in the flash memory module and shows information issue on the lane display screen.

The central processing module comprises a main chip U1 and a first plug connector P1, the main chip U1 is STM32F407ZGT6, and the 6 th pin, the 17 th pin, the 30 th pin, the 39 th pin, the 52 th pin, the 62 th pin, the 72 th pin, the 84 th pin, the 95 th pin, the 108 th pin, the 121 th pin, the 131 th pin, the 143 th pin and the 144 th pin of the main chip U1 are respectively connected with a 3.3V power supply end; the 16 th pin, the 38 th pin, the 51 st pin, the 61 st pin, the 83 th pin, the 94 th pin, the 107 th pin, the 120 th pin, the 130 th pin and the 138 th pin of the main chip U1 are respectively connected with the ground; the 23 rd pin of the main chip U1 is connected with one end of a first crystal oscillator Y1, one end of a second resistor R2 and one end of a first capacitor C1 in parallel, the 24 th pin of the main chip U1 is connected with the other end of the first crystal oscillator Y1, the other end of a second resistor R2 and one end of a second capacitor C2 in parallel, and the other end of the first capacitor C1 and the other end of the second capacitor C2 are connected and then grounded.

A 31 th pin of the main chip U1 is connected with one end of a third capacitor C3, one end of a fourth capacitor C4 and one end of a fifth capacitor C5 in parallel, a 32 th pin and a 33 th pin of the main chip U1 are connected and then connected with the other end of the third capacitor C3, the other end of the fourth capacitor C4, the other end of the fifth capacitor C5 and one end of a first resistor R1 in parallel, and the other end of the first resistor R1 is connected with a 3.3V power supply end; one end of a sixth capacitor C6 is connected to the 71 th pin of the main chip U1, and the other end of the sixth capacitor C6 is grounded.

The main chip U1 still is connected with first plug connector P1, 105 th pin, 109 th pin of main chip U1 are connected with the 7 th pin and the 9 th pin of first plug connector P1 respectively, 3.3 volt supply terminals are connected to the 1 st pin and the 2 nd pin of first plug connector P1, the 4 th pin, the 6 th pin, the 8 th pin, the 10 th pin of first plug connector P1 are connected with ground.

A thirteenth capacitor C13, a fourteenth capacitor C14, a sixteenth capacitor C16, a seventeenth capacitor C17, an eighteenth capacitor C18, a nineteenth capacitor C19, a twentieth capacitor C20, a twenty-first capacitor C21, a twenty-second capacitor C22, a twenty-third capacitor C23, a twenty-fourth capacitor C24 and a twenty-fifth capacitor C25 are connected in parallel between the 3.3V power supply end and the ground end of the main chip U1.

The TFT display screen module comprises a third socket J3 connected with a display screen, wherein the 1 st pin to the 21 st pin of the third socket J3 are respectively connected with the 127 th, 50 th, 119 th, 118 th, 25 th, 85 th, 86 th, 114 th, 115 th, 58 th, 59 th, 60 th, 63 th, 64 th, 65 th, 66 th, 67 th, 68 th, 77 th, 78 th and 79 th pins of the main chip U1 in sequence; the 23 rd pin of the third socket J3 is connected with the 76 th pin of the main chip U1; the 24 th pin is connected with a 3.3V power supply end and one end of a twenty-sixth capacitor C26 in parallel, the 28 th pin is connected with a 5V power supply end and one end of a twenty-seventh capacitor C27 in parallel, and the 22 th pin, the other end of the twenty-sixth capacitor C26, the 26 th pin and the other end of the twenty-seventh capacitor C27 are connected and then connected with the ground.

The flash memory module includes fourth chip U4, fourth chip U4's 1 st foot with main chip U1's 136 th foot is connected, 2 nd foot with main chip U1's 134 th foot is connected, and 3 rd foot is connected with 3.3 and lies prostrate the feed end, and 4 th foot ground connection, 5 th foot are connected main chip U1's 135 th foot, 6 th foot are connected main chip U1's 133 th foot, and the 7 th foot is connected the back with 8 th foot and is connected 3.3 and lie prostrate the feed end, and 8 th foot still is connected with the one end of twenty-eighth electric capacity C28, the other end ground connection of twenty-eighth electric capacity C28.

The RS232 serial port module comprises a second chip U2 and a first socket J1, the second chip U2 is an MAX3232 communication chip, a 1 st pin and a 3 rd pin of the second chip U2 are respectively connected with two ends of an eleventh capacitor C11, a 4 th pin and a 5 th pin are respectively connected with two ends of a twelfth capacitor C12, a 9 th pin is connected with a 102 th pin of the main chip U1, and a 10 th pin is connected with a 101 th pin of the main chip U1; the 16 th pin is connected with a 3.3V power supply end and one end of an eighth capacitor C8 in parallel, and the other end of the eighth capacitor C8 is grounded; the 2 nd pin of the second chip U2 is connected with one end of a ninth capacitor C9, the 6 th pin is connected with one end of a tenth capacitor C10, and the 15 th pin of the second chip U2, the other end of the ninth capacitor C9 and the other end of the tenth capacitor C10 are grounded after being connected; the 8 th pin of the second chip U2 is connected with one end of a third resistor R3, the other end of the third resistor R3 is connected in parallel with the 1 st pin of the first socket J1 and the cathode of a second TVS diode D2, and the anode of the second TVS diode D2 is grounded; the 7 th pin of the second chip U2 is connected with one end of a fourth resistor R4, the other end of the fourth resistor R4 is connected in parallel with the 2 nd pin of the first socket J1 and the cathode of the first TVS diode D1, and the anode of the first TVS diode D1 is grounded.

The RS485 module comprises a third chip U3 and a second socket J2, the third chip U3 is a MAX3485 communication chip, a 1 st pin of the third chip U3 is connected with a 70 th pin of the main chip U1, a 2 nd pin and a 3 rd pin are connected with a 73 th pin of the main chip U1, a 4 th pin is connected with a 69 th pin of the main chip U1, and a 5 th pin is grounded; the 7 th pin of the third chip U3 is connected with one end of an eighth resistor R8, and the other end of the eighth resistor R8 is connected with one end of a sixth resistor R6, the cathode of a fourth TVS diode D4 and the 1 st pin of the second socket J2; the 6 th pin of the third chip U3 is connected with one end of a seventh resistor R7, the 8 th pin of the third chip U3 is connected with one end of a fifth resistor R5 and one end of a fifteenth capacitor C15, the other end of the fifteenth capacitor C15 is grounded and is connected with the anode of a third TVS diode D3, and the other end of the seventh resistor R7, the other end of the fifth resistor R5 and the cathode of the third TVS diode D3 are connected with the 2 nd pin of the second socket J2.

The power module comprises a sixth chip U6, a fifth chip U5 and a fourth socket J4, the sixth chip U6 is an AX30075A power chip, a VCC pin of the sixth chip U6 is connected with one end of a thirty-first capacitor C31, the anode of a first electrolytic capacitor EC1, the cathode of a fifth TVS diode D5 and a 24-volt power supply end, the anode of the fifth TVS diode D5 is connected with the 1 st pin of the fourth socket J4, and the 2 nd pin of the fourth socket J4 is grounded.

The SW pin of the sixth chip U6 is connected with the cathode of a sixth TVS diode D6 and one end of a first inductor L1, the other end of the first inductor L1 is connected in parallel with the anode of a second electrolytic capacitor EC2, one end of a thirty-second capacitor C32, one end of a thirteenth resistor R13 and a 5 v power supply end, and the other end of the thirteenth resistor R13 is connected with one end of a fourteenth resistor R14 and the FB pin of the sixth chip U6.

The EN pin of the sixth chip U6 is connected to the other end of the thirty-first capacitor C31, the negative electrode of the first electrolytic capacitor EC1, the positive electrode of the sixth TVS diode D6, the negative electrode of the second electrolytic capacitor EC2, the other end of the thirty-second capacitor C32, the other end of the fourteenth resistor R14, and the VSS pin of the sixth chip U6, and then grounded.

The fifth chip U5 is an SPX1117-M33 power supply chip, a Vin end of the fifth chip U5 is connected with a 5-volt power supply end, a Vout end of the fifth chip U5 is connected with an anode of a third electrode capacitor EC3, one end of a thirty-fifth capacitor C35 and a 3.3-volt power supply end, and a GND end of the fifth chip U5 is connected with a cathode of the third electrode capacitor EC3 and the other end of the thirty-fifth capacitor C35 and then grounded.

The RESET module comprises a RESET switch RESET1, one end of the RESET switch RESET1 is grounded, the other end of the RESET switch RESET1 is connected with one end of a ninth resistor R9, one end of a twenty-ninth capacitor C29 and the 25 th pin of the main chip U1, the other end of the twenty-ninth capacitor C29 is grounded, and the other end of the ninth resistor R9 is connected with a 3.3V power supply end.

The KEY module comprises a first switch KEY1, a second switch KEY2 and a third switch KEY3, one end of the first switch KEY1 is grounded, the other end of the first switch KEY1 is connected with one end of a tenth resistor R10, one end of a thirtieth capacitor C30 and a 139 th pin of a main chip U1, the other end of the thirtieth capacitor C30 is grounded, and the other end of the tenth resistor R10 is connected with a 3.3V power supply end.

One end of the second switch KEY2 is grounded, the other end of the second switch KEY2 is connected with one end of a fifteenth resistor R15, one end of a thirty-third capacitor C33 and the 140 th pin of the main chip U1, the other end of the thirty-third capacitor C33 is grounded, and the other end of the fifteenth resistor R15 is connected with a 3.3v power supply end.

One end of the third switch KEY3 is grounded, the other end of the third switch KEY3 is connected with one end of a sixteenth resistor R16, one end of a thirty-fourth capacitor C34 and the 141 th pin of the main chip U1, the other end of the thirty-fourth capacitor C34 is grounded, and the other end of the sixteenth resistor R16 is connected with a 3.3v power supply end.

The indicating lamp module comprises a first LED lamp LED1 and a second LED lamp LED2, one end of the first LED lamp LED1 is connected with the 87 th pin of the main chip U1, and the other end of the first LED lamp LED1 is connected with an eleventh resistor R11 and a 3.3V power supply end in series; one end of the second LED lamp LED2 is connected in series with a twelfth resistor R12 and a 3.3V power supply end, and the other end of the second LED lamp LED2 is grounded.

The utility model has the advantages that: the utility model discloses a lane information issuing device based on TFT screen, including central processing module and with TFT display screen module, button module, pilot lamp module, the module that resets, flash memory module, power module, RS485 module and RS232 serial ports module that central processing module connects, TFT display screen module includes the TFT display screen, and the RS485 module is connected with the lane display screen. The central processing module receives pre-stored display information of the RS232 serial port module and stores the pre-stored display information in the flash memory module, the TFT display screen previews the display information to be issued, and the central processing module issues the pre-stored display information stored in the flash memory module on the lane display screen through the RS485 module. The device has rich and diversified display contents, and can change the display information in real time according to the lane information; the number of wires is reduced, the use amount of the wires is reduced, and the cost of the wires is saved; the construction and maintenance are simplified, great convenience is brought to site construction and later maintenance, and the maintenance cost is reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic diagram of a circuit connection structure of the central processing module according to the present invention;

fig. 3 is a schematic diagram of a circuit connection structure of the TFT display module of the present invention;

FIG. 4 is a schematic diagram of a circuit connection structure of the flash memory module of the present invention;

fig. 5 is a schematic diagram of a circuit connection structure of the RS232 serial port module of the present invention;

fig. 6 is a schematic diagram of the circuit connection structure of the RS485 module of the present invention;

fig. 7 is a schematic diagram of a circuit connection structure of the power module of the present invention;

fig. 8 is a schematic diagram of a circuit connection structure of the reset module of the present invention;

fig. 9 is a schematic diagram of a circuit connection structure of the indicator light module of the present invention;

fig. 10 is a schematic diagram of a circuit connection structure of the key module of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, wherein it is noted that, in the description of the invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular manner, and therefore should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 to 10, a lane information issuing device based on a TFT screen comprises a central processing module, and a TFT display screen module, a key module, an indicator light module, a reset module, a flash memory module, a power module, an RS485 module and an RS232 serial port module which are connected with the central processing module, wherein the TFT display screen module comprises a TFT display screen, and the RS485 module connecting piece is provided with a lane display screen.

The device has rich and diversified display contents, and can change the display information in real time according to the lane information; the number of wires is reduced, the use amount of the wires is reduced, and the cost of the wires is saved; the construction and maintenance are simplified, great convenience is brought to site construction and later maintenance, and the maintenance cost is reduced.

In this embodiment, the central processing module includes a main chip U1 and a first plug connector P1, the main chip U1 is an STM32F407ZGT6, and the 6 th, 17 th, 30 th, 39 th, 52 th, 62 th, 72 th, 84 th, 95 th, 108 th, 121 th, 131 th, 143 th and 144 th pins of the main chip U1 are respectively connected to a 3.3V power supply terminal; the 16 th pin, the 38 th pin, the 51 st pin, the 61 st pin, the 83 th pin, the 94 th pin, the 107 th pin, the 120 th pin, the 130 th pin and the 138 th pin of the main chip U1 are respectively connected with the ground; the 23 rd pin of the main chip U1 is connected with one end of a first crystal oscillator Y1, one end of a second resistor R2 and one end of a first capacitor C1 in parallel, the 24 th pin of the main chip U1 is connected with the other end of the first crystal oscillator Y1, the other end of a second resistor R2 and one end of a second capacitor C2 in parallel, and the other end of the first capacitor C1 and the other end of the second capacitor C2 are connected and then grounded.

In the embodiment, the RS485 module adopts balanced transmission and differential reception, so that the capability of suppressing common-mode interference is provided. The most common application of RS485 modules is communication between the interior of programmable logic controllers in industrial environments. The system can be widely used in a system with multiple points, long distance and complicated wiring.

The functional characteristics are as follows: 1, rs-485, the maximum communication distance is about 1219m, and the maximum transmission rate is 10 mb/s; 2. the capability of suppressing common mode interference is provided; 3. a transparent serial port protocol; 4. half-duplex communication is supported.

The KEY module comprises a first switch KEY1, a second switch KEY2 and a third switch KEY3, one end of the first switch KEY1 is grounded, the other end of the first switch KEY1 is connected with one end of a tenth resistor R10, one end of a thirtieth capacitor C30 and a 139 th pin of a main chip U1, the other end of the thirtieth capacitor C30 is grounded, and the other end of the tenth resistor R10 is connected with a 3.3V power supply end; one end of the second switch KEY2 is grounded, the other end of the second switch KEY2 is connected with one end of a fifteenth resistor R15, one end of a thirty-third capacitor C33 and a 140 th pin of the main chip U1, the other end of the thirty-third capacitor C33 is grounded, and the other end of the fifteenth resistor R15 is connected with a 3.3V power supply end; one end of the third switch KEY3 is grounded, the other end of the third switch KEY3 is connected with one end of a sixteenth resistor R16, one end of a thirty-fourth capacitor C34 and the 141 th pin of the main chip U1, the other end of the thirty-fourth capacitor C34 is grounded, and the other end of the sixteenth resistor R16 is connected with a 3.3v power supply end. The three switches can switch different states, and are very convenient.

The utility model has the advantages that:

1. previewability of displayed information content;

2. the display content is rich and diversified, and the display information can be changed in real time according to the lane information;

3. the construction and maintenance are simplified, great convenience is brought to site construction and later maintenance, and the maintenance cost is reduced.

4. The number of wires is reduced, the use amount of the wires is reduced, and the cost of the wires is saved.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides a lane information issuing device based on TFT screen which characterized in that: the system comprises a central processing module, and a TFT display screen module, a key module, an indicator lamp module, a reset module, a flash memory module, a power module, an RS485 module and an RS232 serial port module which are connected with the central processing module, wherein the TFT display screen module comprises a TFT display screen, and the RS485 module is connected with a lane display screen;

the power module supplies power for the whole device, the indicator light module displays the working state, the key module is used for switching display information, the reset module is used for restarting and resetting the whole device, the central processing module receives pre-stored display information of the RS232 serial port module and stores the pre-stored display information in the flash memory module, a TFT display screen on the TFT display screen module previews the display information to be released, and the central processing module stores the pre-stored display information in the flash memory module on the lane display screen through the RS485 module.

2. The TFT screen-based lane information issuing apparatus according to claim 1, wherein: the central processing module comprises a main chip U1 and a first plug connector P1, the main chip U1 is STM32F407ZGT6, and the 6 th pin, the 17 th pin, the 30 th pin, the 39 th pin, the 52 th pin, the 62 th pin, the 72 th pin, the 84 th pin, the 95 th pin, the 108 th pin, the 121 th pin, the 131 th pin, the 143 th pin and the 144 th pin of the main chip U1 are respectively connected with a 3.3V power supply end; the 16 th pin, the 38 th pin, the 51 st pin, the 61 st pin, the 83 th pin, the 94 th pin, the 107 th pin, the 120 th pin, the 130 th pin and the 138 th pin of the main chip U1 are respectively connected with the ground; a 23 rd pin of the main chip U1 is connected in parallel with one end of a first crystal oscillator Y1, one end of a second resistor R2 and one end of a first capacitor C1, a 24 th pin of the main chip U1 is connected in parallel with the other end of the first crystal oscillator Y1, the other end of the second resistor R2 and one end of a second capacitor C2, and the other end of the first capacitor C1 and the other end of the second capacitor C2 are grounded after being connected;

a 31 th pin of the main chip U1 is connected with one end of a third capacitor C3, one end of a fourth capacitor C4 and one end of a fifth capacitor C5 in parallel, a 32 th pin and a 33 th pin of the main chip U1 are connected and then connected with the other end of the third capacitor C3, the other end of the fourth capacitor C4, the other end of the fifth capacitor C5 and one end of a first resistor R1 in parallel, and the other end of the first resistor R1 is connected with a 3.3V power supply end; one end of a sixth capacitor C6 is connected to the 71 th pin of the main chip U1, and the other end of the sixth capacitor C6 is grounded;

the main chip U1 is further connected with a first plug connector P1, the 105 th pin and the 109 th pin of the main chip U1 are respectively connected with the 7 th pin and the 9 th pin of the first plug connector P1, the 1 st pin and the 2 nd pin of the first plug connector P1 are connected with a 3.3V power supply end, and the 4 th pin, the 6 th pin, the 8 th pin and the 10 th pin of the first plug connector P1 are connected with the ground;

3. The TFT screen-based lane information issuing apparatus according to claim 2, wherein: the TFT display screen module comprises a third socket J3 connected with a display screen, wherein the 1 st pin to the 21 st pin of the third socket J3 are respectively connected with the 127 th, 50 th, 119 th, 118 th, 25 th, 85 th, 86 th, 114 th, 115 th, 58 th, 59 th, 60 th, 63 th, 64 th, 65 th, 66 th, 67 th, 68 th, 77 th, 78 th and 79 th pins of the main chip U1 in sequence; the 23 rd pin of the third socket J3 is connected with the 76 th pin of the main chip U1; the 24 th pin is connected with a 3.3V power supply end and one end of a twenty-sixth capacitor C26 in parallel, the 28 th pin is connected with a 5V power supply end and one end of a twenty-seventh capacitor C27 in parallel, and the 22 th pin, the other end of the twenty-sixth capacitor C26, the 26 th pin and the other end of the twenty-seventh capacitor C27 are connected and then connected with the ground.

4. The TFT screen-based lane information issuing apparatus according to claim 2, wherein: the flash memory module includes fourth chip U4, fourth chip U4's 1 st foot with main chip U1's 136 th foot is connected, 2 nd foot with main chip U1's 134 th foot is connected, and 3 rd foot is connected with 3.3 and lies prostrate the feed end, and 4 th foot ground connection, 5 th foot are connected main chip U1's 135 th foot, 6 th foot are connected main chip U1's 133 th foot, and the 7 th foot is connected the back with 8 th foot and is connected 3.3 and lie prostrate the feed end, and 8 th foot still is connected with the one end of twenty-eighth electric capacity C28, the other end ground connection of twenty-eighth electric capacity C28.

5. The TFT screen-based lane information issuing apparatus according to claim 2, wherein: the RS232 serial port module comprises a second chip U2 and a first socket J1, the second chip U2 is an MAX3232 communication chip, a 1 st pin and a 3 rd pin of the second chip U2 are respectively connected with two ends of an eleventh capacitor C11, a 4 th pin and a 5 th pin are respectively connected with two ends of a twelfth capacitor C12, a 9 th pin is connected with a 102 th pin of the main chip U1, and a 10 th pin is connected with a 101 th pin of the main chip U1; the 16 th pin is connected with a 3.3V power supply end and one end of an eighth capacitor C8 in parallel, and the other end of the eighth capacitor C8 is grounded; the 2 nd pin of the second chip U2 is connected with one end of a ninth capacitor C9, the 6 th pin is connected with one end of a tenth capacitor C10, and the 15 th pin of the second chip U2, the other end of the ninth capacitor C9 and the other end of the tenth capacitor C10 are grounded after being connected; the 8 th pin of the second chip U2 is connected with one end of a third resistor R3, the other end of the third resistor R3 is connected in parallel with the 1 st pin of the first socket J1 and the cathode of a second TVS diode D2, and the anode of the second TVS diode D2 is grounded; the 7 th pin of the second chip U2 is connected with one end of a fourth resistor R4, the other end of the fourth resistor R4 is connected in parallel with the 2 nd pin of the first socket J1 and the cathode of the first TVS diode D1, and the anode of the first TVS diode D1 is grounded.

6. The TFT screen-based lane information issuing apparatus according to claim 2, wherein: the RS485 module comprises a third chip U3 and a second socket J2, the third chip U3 is a MAX3485 communication chip, a 1 st pin of the third chip U3 is connected with a 70 th pin of the main chip U1, a 2 nd pin and a 3 rd pin are connected with a 73 th pin of the main chip U1, a 4 th pin is connected with a 69 th pin of the main chip U1, and a 5 th pin is grounded; the 7 th pin of the third chip U3 is connected with one end of an eighth resistor R8, and the other end of the eighth resistor R8 is connected with one end of a sixth resistor R6, the cathode of a fourth TVS diode D4 and the 1 st pin of the second socket J2; the 6 th pin of the third chip U3 is connected with one end of a seventh resistor R7, the 8 th pin of the third chip U3 is connected with one end of a fifth resistor R5 and one end of a fifteenth capacitor C15, the other end of the fifteenth capacitor C15 is grounded and is connected with the anode of a third TVS diode D3, and the other end of the seventh resistor R7, the other end of the fifth resistor R5 and the cathode of the third TVS diode D3 are connected with the 2 nd pin of the second socket J2.

7. The TFT-screen-based lane information issuing apparatus according to claim 2, wherein: the power supply module comprises a sixth chip U6, a fifth chip U5 and a fourth socket J4, wherein the sixth chip U6 is an AX30075A power supply chip, a VCC pin of the sixth chip U6 is connected with one end of a thirty-first capacitor C31, the anode of a first electrolytic capacitor EC1, the cathode of a fifth TVS diode D5 and a 24-volt power supply end, the anode of the fifth TVS diode D5 is connected with the 1 st pin of the fourth socket J4, and the 2 nd pin of the fourth socket J4 is grounded;

a SW pin of the sixth chip U6 is connected with a cathode of a sixth TVS diode D6 and one end of a first inductor L1, the other end of the first inductor L1 is connected in parallel with an anode of a second electrolytic capacitor EC2, one end of a thirty-second capacitor C32, one end of a thirteenth resistor R13 and a 5 v power supply end, and the other end of the thirteenth resistor R13 is connected with one end of a fourteenth resistor R14 and an FB pin of the sixth chip U6;

the EN pin of the sixth chip U6 is connected with the other end of the thirty-first capacitor C31, the cathode of the first electrolytic capacitor EC1, the anode of the sixth TVS diode D6, the cathode of the second electrolytic capacitor EC2, the other end of the thirty-second capacitor C32, the other end of the fourteenth resistor R14 and the VSS pin of the sixth chip U6, and then grounded;

8. The TFT-screen-based lane information issuing apparatus according to claim 2, wherein: the RESET module comprises a RESET switch RESET1, one end of the RESET switch RESET1 is grounded, the other end of the RESET switch RESET1 is connected with one end of a ninth resistor R9, one end of a twenty-ninth capacitor C29 and the 25 th pin of the main chip U1, the other end of the twenty-ninth capacitor C29 is grounded, and the other end of the ninth resistor R9 is connected with a 3.3V power supply end.

9. The TFT screen-based lane information issuing apparatus according to claim 2, wherein: the KEY module comprises a first switch KEY1, a second switch KEY2 and a third switch KEY3, one end of the first switch KEY1 is grounded, the other end of the first switch KEY1 is connected with one end of a tenth resistor R10, one end of a thirtieth capacitor C30 and a 139 th pin of a main chip U1, the other end of the thirtieth capacitor C30 is grounded, and the other end of the tenth resistor R10 is connected with a 3.3V power supply end;

one end of the second switch KEY2 is grounded, the other end of the second switch KEY2 is connected with one end of a fifteenth resistor R15, one end of a thirty-third capacitor C33 and a 140 th pin of the main chip U1, the other end of the thirty-third capacitor C33 is grounded, and the other end of the fifteenth resistor R15 is connected with a 3.3V power supply end;

10. The TFT screen-based lane information issuing apparatus according to claim 2, wherein: the indicating lamp module comprises a first LED lamp LED1 and a second LED lamp LED2, one end of the first LED lamp LED1 is connected with the 87 th pin of the main chip U1, and the other end of the first LED lamp LED1 is connected with an eleventh resistor R11 and a 3.3V power supply end in series; one end of the second LED2 is connected in series with a twelfth resistor R12 and a 3.3v power supply terminal, and the other end of the second LED2 is grounded.