Control circuit suitable for line light source system

Abstract

The utility model discloses a control circuit suitable for a line light source system. A control circuit suitable for a linear light source system is adopted, namely, the control circuit comprises a first control chip circuit used for signal control, and the first control chip circuit achieves linear light source brightness adjustment through a key switch in combination with a fourth nixie tube; one side of the first control chip circuit is connected with a crystal oscillator circuit for providing a clock signal and a reset circuit for realizing automatic reset by utilizing an RC charging and discharging function; by means of digital display and stepless subdivision of brightness adjustment output of the light source, the best light source state can be conveniently adjusted, and light source output can be triggered in a multi-trigger mode. That is to say, through the control circuit provided by the utility model, the brightness adjustment output of the stepless subdivision light source can be realized through digital display, the first control chip circuit and the key switch, the best light source state can be conveniently adjusted, and the use cost of an enterprise is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of line light source circuits, and in particular relates to a control circuit suitable for a line light source system. Background Art

[0002] At present, the price of online light sources in the market is relatively expensive, resulting in great cost pressure in the process of project promotion, which is unacceptable to customer companies. Moreover, after a period of use, the brightness of the light source of the light strip is greatly attenuated, some turn yellow, and some become dark, which cannot meet the needs of long-term work use.

[0003] In addition, the brightness of the line light source is not finely adjusted during the fine-tuning process, and the brightness is either too bright or not bright enough, resulting in poor color graphics. In addition, the heat dissipation of the light bar or controller is poor, resulting in the lamp beads or controller being burned out during long-term use. In addition, the communication format used in the communication process is very cumbersome and cannot be standardized.

[0004] Therefore, in view of the above technical problems and defects, it is urgent to design and develop a control circuit suitable for a linear light source system. Utility Model Content

[0005] In order to overcome the shortcomings and difficulties of the above-mentioned prior art, the purpose of the utility model is to provide a control circuit suitable for a linear light source system, which can adjust the brightness output of the light source steplessly through digital display, can be easily adjusted to the best light source state, and can also use a multi-trigger method to trigger the light source output.

[0006] The utility model aims to provide a control circuit suitable for a line light source system.

[0007] The purpose of the utility model is achieved as follows: the control circuit includes a first control chip circuit for signal control, the first control chip circuit realizes linear light source brightness adjustment through a key switch and in combination with a fourth digital tube;

[0008] One side of the first control chip circuit is connected to a crystal oscillator circuit for providing a clock signal, and a reset circuit for achieving automatic reset using an RC charge and discharge function.

[0009] Further, the crystal oscillator circuit includes a first crystal oscillator;

[0010] One end of the first crystal oscillator is respectively connected to the fifth pin of the first control chip circuit, one end of the eighth resistor, and one end of the thirteenth capacitor;

[0011] The other end of the first crystal oscillator is respectively connected to the sixth pin of the first control chip circuit, the other end of the eighth resistor, and one end of the fourteenth capacitor;

[0012] The other end of the fourteenth capacitor and the other end of the thirteenth capacitor are grounded together.

[0013] Further, the reset circuit includes a sixteenth capacitor; one end of the sixteenth capacitor is respectively connected to one end of the sixteenth resistor and the seventh pin of the first control chip circuit;

[0014] The other end of the sixteenth capacitor is grounded, and the other end of the sixteenth resistor is connected to the power supply end.

[0015] Further, the key switch includes a first key switch, a second key switch and a third key switch;

[0016] The first key switch is connected to the fifty-first pin of the first control chip circuit; the second key switch is connected to the third pin of the first control chip circuit; and the third key switch is connected to the fourth pin of the first control chip circuit.

[0017] Furthermore, the model of the first control chip circuit is STM32F103R8T6.

[0018] Furthermore, the fourth digital tube is connected to the first control chip circuit via a connecting circuit, and is combined with a fifth control chip to control data transmission and control the display of the fourth digital tube.

[0019] Further, the connection circuit includes a first connection circuit, a second connection circuit, a third connection circuit and a fourth connection circuit;

[0020] The first connection circuit includes a first triode; the collector of the first triode is connected to the twelfth pin of the fourth digital tube; the base of the first triode is respectively connected to one end of the first resistor and one end of the fourth resistor; the other end of the first resistor is connected to the eleventh pin of the first control chip circuit; the emitter of the first triode and the other end of the fourth resistor are grounded together;

[0021] The second connection circuit includes a second triode; the collector of the second triode is connected to the ninth pin of the fourth digital tube; the base of the second triode is respectively connected to one end of the fifth resistor and one end of the eleventh resistor; the other end of the fifth resistor is connected to the tenth pin of the first control chip circuit; the emitter of the second triode and the other end of the eleventh resistor are grounded together;

[0022] The third connection circuit includes a third triode; the collector of the third triode is connected to the eighth pin of the fourth digital tube; the base of the third triode is respectively connected to one end of the 20th resistor and one end of the 21st resistor; the other end of the 20th resistor is connected to the ninth pin of the first control chip circuit; the emitter of the third triode and the other end of the 21st resistor are grounded together;

[0023] The fourth connection circuit includes a fourth transistor; the collector of the fourth transistor is connected to the sixth pin of the fourth digital tube; the base of the fourth transistor is respectively connected to one end of the twenty-second resistor and one end of the twenty-third resistor; the other end of the twenty-second resistor is connected to the eighth pin of the first control chip circuit; the emitter of the fourth transistor and the other end of the twenty-third resistor are grounded together.

[0024] Furthermore, the fifth control chip is connected to the fourth digital tube via a connecting resistor to achieve current limiting;

[0025] The eleventh pin, the twelfth pin and the fourteenth pin of the fifth control chip are respectively connected to the first control chip circuit to realize data transmission;

[0026] The connection resistors include a sixth resistor, a seventh resistor, a ninth resistor, a twelfth resistor, a thirteenth resistor, a seventeenth resistor, an eighteenth resistor, and a nineteenth resistor.

[0027] Furthermore, the model of the fifth control chip is 74HC595D. The model of the fourth digital tube is 3944AS.

[0028] The utility model provides a control circuit suitable for a linear light source system, that is, the control circuit includes a first control chip circuit for signal control, the first control chip circuit realizes linear light source brightness adjustment through a key switch and in combination with a fourth digital tube; one side of the first control chip circuit is connected to a crystal oscillator circuit for providing a clock signal, and a reset circuit that realizes automatic reset by using an RC charging and discharging function; the brightness of the light source can be adjusted output by steplessly subdividing the light source through digital display, and can be conveniently adjusted to the best light source state, and the light source output can also be triggered in a multi-trigger manner.

[0029] That is to say, through the control circuit provided by the utility model, the brightness adjustment output of the light source can be realized steplessly through digital display and combined with the first control chip circuit, using a key switch, which can conveniently adjust to the best light source state and reduce the company's use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 This is a schematic diagram of the principle framework of a control circuit applicable to a linear light source system of the utility model;

[0032] Figure 2 This is a schematic diagram of a control circuit suitable for a linear light source system of the utility model;

[0033] Figure 3 This is a schematic diagram of a power supply circuit of a control circuit suitable for a linear light source system of the utility model;

[0034] Figure 4 The utility model is a schematic diagram of an Ethernet terminal circuit suitable for a control circuit of a line light source system.

[0035] Figure 5 This is a schematic diagram of a touch screen terminal circuit of a control circuit suitable for a linear light source system of the utility model;

[0036] Figure 6 This is a schematic diagram of a key switch circuit of a control circuit suitable for a linear light source system of the utility model;

[0037] Figure 7 This is a schematic diagram of an LED circuit of a control circuit suitable for a linear light source system of the utility model;

[0038] Figure 8 This is a schematic diagram of a signal follower circuit of a control circuit suitable for a linear light source system of the utility model;

[0039] Fig. 9 This is a terminal schematic diagram of a control circuit suitable for a linear light source system of the utility model;

[0040] Fig.10 This is a schematic diagram of an IO port external terminal of a control circuit suitable for a linear light source system of the utility model;

[0041] Fig.11 This is a schematic diagram of a JTAG terminal of a control circuit suitable for a linear light source system of the utility model;

[0042] Fig.12 This is a schematic diagram of an external trigger circuit of a control circuit suitable for a linear light source system of the utility model;

[0043] Fig.13This is a schematic diagram of a RS232 communication circuit for a control circuit of a line light source system of the utility model;

[0044] Fig.14 This is a schematic diagram of the second RS232 communication circuit of a control circuit suitable for a linear light source system of the utility model;

[0045] Fig.15 This is a schematic diagram of a digital tube circuit of a control circuit suitable for a linear light source system of the utility model;

[0046] Fig.16 This is a schematic diagram of an Ethernet circuit for a control circuit of a line light source system of the utility model;

[0047] In the figure: R1-first resistor; R2-second resistor; R3-third resistor; R4-fourth resistor; R5-fifth resistor; R6-sixth resistor; R7-seventh resistor; R8-eighth resistor; R9-ninth resistor; R10-tenth resistor; R11-eleventh resistor; R12-twelfth resistor; R13-thirteenth resistor; R14-fourteenth resistor; R15-fifteenth resistor; R16-sixteenth resistor; R17-seventeenth resistor; R18-eighteenth resistor; R19-nineteenth resistor; R20-twentieth resistor; R21-twenty-first resistor; R22-twenty-second resistor; R23-twenty-third resistor; R24-twenty-fourth resistor; R25-twenty-fifth resistor; R26-twenty-sixth resistor; R27-27th resistor; R28-28th resistor; R29-29th resistor; R30-30th resistor; R31-31st resistor; R32-32nd resistor; R33-33rd resistor; R34-34th resistor; Q1-1st transistor; Q2-2nd transistor; Q3-3rd transistor; Q4-4th transistor; U1-1st control chip circuit; U2-2nd photocoupler; U3-3rd photocoupler; U4-4th digital tube; U5-5th control chip; U6-6th control chip; U7-7th control chip; U8-8th control chip; U9-9th control chip; C1-1st capacitor; C2-2nd capacitor; C3-3rd capacitor; C4-4th capacitor; C5-5th capacitor; C6-sixth capacitor; C7-seventh capacitor; C8-eighth capacitor; C9-ninth capacitor; C10-tenth capacitor; C11-eleventh capacitor; C12-twelfth capacitor; C13-thirteenth capacitor; C14-fourteenth capacitor; C15-fifteenth capacitor; C16-sixteenth capacitor; C17-seventeenth capacitor; C18-eighteenth capacitor; C19-nineteenth capacitor; C20-twentieth capacitor; C21-twenty-first capacitor; C22-twenty-second capacitor; C23-twenty-third capacitor; C24-twenty-fourth capacitor; C25-twenty-fifth capacitor; C26-twenty-sixth capacitor; C27-twenty-seventh capacitor; C28-twenty-eighth capacitor; C29-twenty-ninth capacitor; C30-thirtieth capacitor ;C31-31st capacitor;C32-32nd capacitor;C33-33rd capacitor;C34-34th capacitor;C35-35th capacitor;C36-36th capacitor;C37-37th capacitor;C38-38th capacitor;C39-39th capacitor;C40-40th capacitor;C41-41st capacitor;C42-42nd capacitor;C43-43rd capacitor;C52-52nd capacitor;Y1-first crystal oscillator;X1-second crystal oscillator;K1-first key switch;K2-second key switch;K3-third key switch;CRD1-first constant current diode;CRD2-second constant current diode;D1-first diode;D2-second diode;D3-third diode; D4-fourth diode; D5-fifth diode; D6-sixth diode; D12-twelfth diode; D10-tenth bidirectional transient suppression diode; D11-eleventh bidirectional transient suppression diode; D13-thirteenth bidirectional transient suppression diode; F2-second fuse; F3-third fuse; J1-Ethernet interface; J2-RS232 communication interface; P1-first terminal; P2-second terminal; P3-third terminal; P4-fourth terminal; P5-fifth terminal; P6-sixth terminal; P7-seventh terminal; P8-eighth terminal; L3-third inductor; LED1-first light emitting diode;

[0048] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0049] In order to better understand the purpose, technical solutions and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. Those skilled in the art can easily understand other advantages and functions of the utility model from the contents disclosed in this specification.

[0050] The present invention may also be implemented or applied through other different specific examples, and the details in this specification may also be modified and changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0051] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0052] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. Secondly, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0053] The present invention will be further described below in conjunction with the accompanying drawings. Figure 1-Figure 16 As shown, the utility model provides a control circuit suitable for a line light source system.

[0054] The control circuit includes a first control chip circuit for signal control, and the first control chip circuit realizes linear light source brightness adjustment through a key switch and in combination with a fourth digital tube;

[0055] One side of the first control chip circuit is connected to a crystal oscillator circuit for providing a clock signal, and a reset circuit for achieving automatic reset using an RC charge and discharge function.

[0056] The crystal oscillator circuit includes a first crystal oscillator;

[0057] One end of the first crystal oscillator is respectively connected to the fifth pin of the first control chip circuit, one end of the eighth resistor, and one end of the thirteenth capacitor;

[0058] The other end of the first crystal oscillator is respectively connected to the sixth pin of the first control chip circuit, the other end of the eighth resistor, and one end of the fourteenth capacitor;

[0059] The other end of the fourteenth capacitor and the other end of the thirteenth capacitor are grounded together.

[0060] The reset circuit includes a sixteenth capacitor; one end of the sixteenth capacitor is respectively connected to one end of the sixteenth resistor and the seventh pin of the first control chip circuit;

[0061] The other end of the sixteenth capacitor is grounded, and the other end of the sixteenth resistor is connected to the power supply end.

[0062] The key switch includes a first key switch, a second key switch and a third key switch;

[0063] The first key switch is connected to the fifty-first pin of the first control chip circuit; the second key switch is connected to the third pin of the first control chip circuit; and the third key switch is connected to the fourth pin of the first control chip circuit.

[0064] The model of the first control chip circuit is STM32F103R8T6.

[0065] The fourth digital tube is connected to the first control chip circuit via a connecting circuit, and is combined with a fifth control chip to control data transmission and control the display of the fourth digital tube.

[0066] The connection circuit includes a first connection circuit, a second connection circuit, a third connection circuit and a fourth connection circuit;

[0067] The first connection circuit includes a first triode; the collector of the first triode is connected to the twelfth pin of the fourth digital tube; the base of the first triode is respectively connected to one end of the first resistor and one end of the fourth resistor; the other end of the first resistor is connected to the eleventh pin of the first control chip circuit; the emitter of the first triode and the other end of the fourth resistor are grounded together;

[0068] The second connection circuit includes a second triode; the collector of the second triode is connected to the ninth pin of the fourth digital tube; the base of the second triode is respectively connected to one end of the fifth resistor and one end of the eleventh resistor; the other end of the fifth resistor is connected to the tenth pin of the first control chip circuit; the emitter of the second triode and the other end of the eleventh resistor are grounded together;

[0069] The third connection circuit includes a third triode; the collector of the third triode is connected to the eighth pin of the fourth digital tube; the base of the third triode is respectively connected to one end of the 20th resistor and one end of the 21st resistor; the other end of the 20th resistor is connected to the ninth pin of the first control chip circuit; the emitter of the third triode and the other end of the 21st resistor are grounded together;

[0070] The fourth connection circuit includes a fourth transistor; the collector of the fourth transistor is connected to the sixth pin of the fourth digital tube; the base of the fourth transistor is respectively connected to one end of the twenty-second resistor and one end of the twenty-third resistor; the other end of the twenty-second resistor is connected to the eighth pin of the first control chip circuit; the emitter of the fourth transistor and the other end of the twenty-third resistor are grounded together.

[0071] The fifth control chip is connected to the fourth digital tube via a connecting resistor to achieve current limiting;

[0072] The eleventh pin, the twelfth pin and the fourteenth pin of the fifth control chip are respectively connected to the first control chip circuit to realize data transmission;

[0073] The connection resistors include a sixth resistor, a seventh resistor, a ninth resistor, a twelfth resistor, a thirteenth resistor, a seventeenth resistor, an eighteenth resistor, and a nineteenth resistor.

[0074] The model of the fifth control chip is 74HC595D. The model of the fourth digital tube is 3944AS.

[0075] Specifically, in the embodiment of the utility model, the line light source system involved in the utility model scheme is controlled by the STM32F103R8T6 chip (i.e., the first control chip circuit U1), capacitors C14, C13, resistor R8 and crystal oscillator Y1 constitute a crystal oscillator circuit, providing the most basic clock signal; capacitor C16 and capacitor R16 constitute a reset circuit, which utilizes the RC charging and discharging function to automatically reset after the power is turned on.

[0076] Among them, terminal blocks P1, P3, and P4 are connected to the power driver board to control the driver board; terminal block P8 is connected to the Ethernet PCB board for communication; pin header P10 is reserved for expansion IO port; terminal block P6 is connected to the serial port touch screen for human-computer interaction; terminal block P7 is used for program downloading.

[0077] K1, K2, and K3 are controlled by the STM32F103R8T6 chip to select channel switches and light source brightness adjustment, and their status is displayed on the 4-bit common cathode digital tube U4 (3944AS).

[0078] R1 and R4 and Q1, R5 and R11 and Q2, R20 and R21 and Q3, R22 and R23 and Q4 form 4 groups of circuits, one end of which is connected to the STM32F103R8T6 chip to drive the digital tube U4, and the other end is connected to the 4 common ends of the digital tube; the U5 (74HC595D) chip is connected to the segment selection end of the digital tube through resistors R7, R19, R17, R9, R6, R12, R18, and R13. The resistors are used for current limiting. The 11th, 12th, and 14th pins of U5 are connected to the STM32F103R8T6 chip for data transmission, so as to control the display of the digital tube.

[0079] The light-emitting diode D3 is used to display the 3.3V power supply status. The cathodes of the light-emitting diodes D4 and D5 are connected to the STM32F103R8T6 chip to control the LED on and off to display the selected channel. The resistors R24, R25, and R26 are used for current limiting to prevent D3, D4, and D5 from burning out.

[0080] J2 (DB9) is the RS232 communication interface. The U7 (MAX3232EI) chip and four 0.1μF external capacitors C36, C37, C41, and C42 constitute the RS-232 line driver and receiver. C39, C40, and C38 are circuit filtering and voltage stabilization circuits. The 13th and 14th pins of the chip communicate with J2 through the protection circuit, and the 11th and 12th pins are connected to the STM32F103R8T6 chip for communication, converting the 232 level output by the PC into the TTL level that the microcontroller can receive. Capacitor C52 is used As grounding devices, they can reduce circuit interference and improve equipment performance; D10 (SMAJ12CA), D11 (SMAJ24CA), and D13 (SMAJ12CA) are bidirectional transient suppression diodes. When overvoltage or overcurrent is detected in the circuit, they will quickly turn on and guide the overvoltage or overcurrent to the ground line, thereby protecting the components from damage; F2 (ASMD0805-200mA) and F3 (ASMD0805-200mA) are resettable fuses used for overcurrent protection; D12 (SS34) is used for circuit protection.

[0081] P5 is two sets of identical peripheral trigger ports. The constant current diode CRD1 (S-562T) supplies constant current to the voltage regulator diode D2 (MMSZ5225B-7-F); D2 provides a stable voltage output and has an overvoltage protection function to prevent the light-emitting diode from malfunctioning due to dimming; the optocoupler U2 (TLP291) isolates the input and output from each other and connects to the chip STM32F103R8T6 for control. The third pin of the optocoupler U2 is grounded, and the fourth pin pull-up resistor R2 is connected to 3.3V. At the same time, the fourth pin is connected to the I / O port of the STM32F103R8T6 for control; the second group CDR2, D1, U3, R3 are the same.

[0082] Chip U6 (GS8552) and peripheral resistors and capacitors form a signal follower circuit. The chip input is the circuit signal of the driver board, which is fed back to the control system.

[0083] In Ethernet, J1 (HY951180A) is an Ethernet interface, connected to external devices, and terminal block P1 is connected to the control board to communicate with each other. U8 (CH9121) is a network serial port transparent transmission chip, which can realize bidirectional transparent transmission of network data and serial port data. C1-C17 are decoupling capacitors near the 3.3V and 1.8V power pins of the chip; U9 (SC6206B-54FK) linear regulator and C20, C19, C18 form a circuit to complete the 3.3V step-down 1.8V supply chip; resistor R7 and LED1 form a power status indicator; capacitors C22, C23 and crystal oscillator X1 form a crystal oscillator circuit; capacitor D1 is used as a grounding device to reduce circuit interference.

[0084] In the circuit of this scheme, the first terminal P1 is XH2.54mm, 6P straight pin socket; the second terminal P2 is XH2.54mm, 6P straight pin socket; the third terminal P3 is XH2.54mm, 4P straight pin socket; the fourth terminal P4 is XH2.54mm, 6P straight pin socket; the fifth terminal P5 is XH2.54mm, 4P straight pin socket; the sixth terminal P6 is XH2.54mm, 4P straight pin socket; the seventh terminal P7 is XH2.54mm, 1x5P single-row straight plug, square pin; the eighth terminal P8 is XH2.54mm, 6P straight pin socket; the IO external terminal is XH2.54mm, 2x5P double-row straight plug, square pin.

[0085] The utility model provides a control circuit suitable for a linear light source system, that is, the control circuit includes a first control chip circuit for signal control, the first control chip circuit realizes linear light source brightness adjustment through a key switch and in combination with a fourth digital tube; one side of the first control chip circuit is connected to a crystal oscillator circuit for providing a clock signal, and a reset circuit that realizes automatic reset by using an RC charging and discharging function; the brightness of the light source can be adjusted output by steplessly subdividing the light source through digital display, and can be conveniently adjusted to the best light source state, and the light source output can also be triggered in a multi-trigger manner.

[0086] That is to say, through the control circuit provided by the utility model, the brightness adjustment output of the light source can be realized steplessly through digital display and combined with the first control chip circuit, using a key switch, which can conveniently adjust to the best light source state and reduce the company's use cost.

[0087] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

[0088] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A control circuit suitable for a line light source system, characterized in that: The control circuit includes a first control chip circuit for signal control, and the first control chip circuit realizes linear light source brightness adjustment through a key switch and in combination with a fourth digital tube; One side of the first control chip circuit is connected to a crystal oscillator circuit for providing a clock signal, and a reset circuit for achieving automatic reset using an RC charge and discharge function.

2. A control circuit suitable for a line light source system according to claim 1, characterized in that: The crystal oscillator circuit includes a first crystal oscillator; One end of the first crystal oscillator is respectively connected to the fifth pin of the first control chip circuit, one end of the eighth resistor, and one end of the thirteenth capacitor; The other end of the first crystal oscillator is respectively connected to the sixth pin of the first control chip circuit, the other end of the eighth resistor, and one end of the fourteenth capacitor; The other end of the fourteenth capacitor and the other end of the thirteenth capacitor are grounded together.

3. A control circuit suitable for a line light source system according to claim 1, characterized in that: The reset circuit includes a sixteenth capacitor; one end of the sixteenth capacitor is respectively connected to one end of the sixteenth resistor and the seventh pin of the first control chip circuit; The other end of the sixteenth capacitor is grounded, and the other end of the sixteenth resistor is connected to the power supply end.

4. A control circuit suitable for a line light source system according to claim 1, characterized in that: The key switch includes a first key switch, a second key switch and a third key switch; The first key switch is connected to the fifty-first pin of the first control chip circuit; the second key switch is connected to the third pin of the first control chip circuit; and the third key switch is connected to the fourth pin of the first control chip circuit.

5. A control circuit suitable for a line light source system according to any one of claims 1 to 4, characterized in that: The model of the first control chip circuit is STM32F103R8T6.

6. A control circuit suitable for a line light source system according to claim 1, characterized in that: The fourth digital tube is connected to the first control chip circuit via a connecting circuit, and is combined with a fifth control chip to control data transmission and control the display of the fourth digital tube.

7. A control circuit suitable for a line light source system according to claim 6, characterized in that: The connection circuit includes a first connection circuit, a second connection circuit, a third connection circuit and a fourth connection circuit; The first connection circuit includes a first triode; the collector of the first triode is connected to the twelfth pin of the fourth digital tube; the base of the first triode is respectively connected to one end of the first resistor and one end of the fourth resistor; the other end of the first resistor is connected to the eleventh pin of the first control chip circuit; the emitter of the first triode and the other end of the fourth resistor are grounded together; The second connection circuit includes a second triode; the collector of the second triode is connected to the ninth pin of the fourth digital tube; the base of the second triode is respectively connected to one end of the fifth resistor and one end of the eleventh resistor; the other end of the fifth resistor is connected to the tenth pin of the first control chip circuit; the emitter of the second triode and the other end of the eleventh resistor are grounded together; The third connection circuit includes a third triode; the collector of the third triode is connected to the eighth pin of the fourth digital tube; the base of the third triode is respectively connected to one end of the 20th resistor and one end of the 21st resistor; the other end of the 20th resistor is connected to the ninth pin of the first control chip circuit; the emitter of the third triode and the other end of the 21st resistor are grounded together; The fourth connection circuit includes a fourth transistor; the collector of the fourth transistor is connected to the sixth pin of the fourth digital tube; the base of the fourth transistor is respectively connected to one end of the twenty-second resistor and one end of the twenty-third resistor; the other end of the twenty-second resistor is connected to the eighth pin of the first control chip circuit; the emitter of the fourth transistor and the other end of the twenty-third resistor are grounded together.

8. A control circuit suitable for a line light source system according to claim 6, characterized in that: The fifth control chip is connected to the fourth digital tube via a connecting resistor to achieve current limiting; The eleventh pin, the twelfth pin and the fourteenth pin of the fifth control chip are respectively connected to the first control chip circuit to realize data transmission; The connection resistors include a sixth resistor, a seventh resistor, a ninth resistor, a twelfth resistor, a thirteenth resistor, a seventeenth resistor, an eighteenth resistor, and a nineteenth resistor.

9. A control circuit suitable for a line light source system according to claim 6 or 8, characterized in that: The model of the fifth control chip is 74HC595D.

10. A control circuit suitable for a line light source system according to claim 1 or 6 or 7 or 8, characterized in that: The model of the fourth digital tube is 3944AS.

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