CN113747079A - Camera drive control circuit, layout structure, camera and toy - Google Patents

Abstract

Translated fromChinese

本发明提供了一种摄像头驱动控制电路，属于摄像头电路结构领域，包括：一键开关机电路和充电时自动开关机电路，所述一键开关机电路使系统通过按键进行关闭或启动，所述充电时自动开关机电路用于在系统关机状态下，当系统充电时能够自动启动，断开充电时系统自动关闭。发明提供的摄像头驱动控制电路在现有的能够一键开关机的功能基础上，增加了在充电时的系统自动开关机功能，电路结构简单，制造成本较低。

The invention provides a camera drive control circuit, which belongs to the field of camera circuit structure, and includes a one-key switch circuit and an automatic switch circuit during charging, wherein the one-key switch circuit enables the system to be turned off or started by pressing a button, and the The automatic switching circuit during charging is used to automatically start the system when charging when the system is turned off, and automatically shut down when the charging is disconnected. The camera drive control circuit provided by the invention adds the function of automatic switching on and off of the system during charging on the basis of the existing function of one-key switching on and off, the circuit structure is simple, and the manufacturing cost is low.

Description

Camera drive control circuit, layout structure, camera and toy

Technical Field

The invention relates to the field of camera circuit structures, in particular to a camera driving control circuit and a layout structure.

Background

IN the working process of the camera, the working state of the camera is managed through a driving control circuit, the camera comprises a one-KEY switch camera, and the existing scheme is as shown IN fig. 1, when a switch KEY is closed, a pin from a VCC _ IN end to a grid electrode of a transistor Q1 is IN a high level, a first transistor is conducted, a drain electrode of the first transistor is IN a low level, a second P-type transistor Q2 is conducted, so that the VCC _ IN end is conducted with a VCC _ OUT end, a system starts to work, an IO input port of an SW _ CTRL end is controlled by an integrated chip or a circuit to output a high level, the VCC _ IN end is continuously conducted with the VCC _ OUT end, and the system continuously and normally works; IN the normal working process of the system, the switch KEY is closed again, the integrated chip or the circuit detects the high level state of the IO port of the ADC _ VCC _ IN, the integrated chip or the circuit controls the IO input port of the SW _ CTRL end to output low level, and after the switch KEY is lifted, the system is closed, so that the KEY on/off of the system is realized.

The technology can realize one-key startup and shutdown of the system, but the one-key startup and shutdown of the scheme can be realized only after the switch is triggered, and the scheme cannot be realized when the system needs to be charged and automatically started and run to enable the system to automatically start and run.

Chinese patent publication No. CN209805952U discloses a camera control device and an intelligent device, including: a first control branch and a switching circuit; the output end of the first control branch circuit is connected with the input end of the switch circuit, and the output end of the switch circuit is connected with the signal control end of the camera module; the first control branch circuit also comprises a toggle switch circuit and a signal transmission circuit which are sequentially connected, and the signal transmission circuit is connected with the switch circuit; the toggle switch circuit is used for receiving a toggle signal; the signal transmission circuit is used for transmitting the toggle signal to the switch circuit; and the switching circuit is used for generating a corresponding level signal according to the toggle signal and sending the level signal to the camera module so that the camera module controls the running state of the camera according to the level signal.

Disclosure of Invention

In view of the defects in the prior art, the invention aims to provide a camera driving control circuit, a layout structure, a camera and a toy.

According to the present invention, there is provided a camera drive control circuit comprising: the system comprises a one-key switching circuit and a charging automatic switching circuit, wherein the one-key switching circuit enables the system to be closed or started through a key, and the charging automatic switching circuit is used for automatically starting the system when the system is charged and automatically closing the system when the system is disconnected in a system shutdown state.

Preferably, the camera drive control circuit includes: the circuit comprises a switch K1, a diode D1, a diode D2, a diode D3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a first MCU chip, a second MCU chip, a FLASH chip, a transistor Q1, a transistor Q2 and a capacitor C1;

one end of the switch K1 is connected to a VCC _ IN terminal, the other end of the switch K1 is connected to the anode of the diode D1 and one end of the resistor R4, the other end of the resistor R4 is connected to one end of the resistor R5 and the ADC _ VCC _ IN port of the first MCU chip, the other end of the resistor R5 is grounded, the cathode of the diode D1 is connected to one end of the resistor R1, the anode of the diode D2 is connected to the SW _ CTRL port of the first MCU chip, and the other end of the diode D2 is connected to one end of the resistor R1;

the other end of the resistor R1 is connected with one end of a capacitor C1, one end of a resistor R2 and a gate of a transistor Q1 respectively, the other end of the capacitor C1 is connected with the other end of a resistor R2 and a source of a transistor Q1 respectively and is grounded, a drain of the transistor Q1 is connected with a gate of the transistor Q2 and one end of a resistor R3 respectively, the other end of the resistor R3 is connected with a source of a transistor Q2, the other end of the resistor R3 is connected with a VCC _ IN end, a drain of the transistor Q2 forms a VCC _ OUT end, the VCC _ OUT end is connected with a VCC2 port of a second MCU chip, the second MCU chip is connected with a FLASH chip, and a drain of the transistor Q2 is connected with a VCC1 port of the first MCU chip;

the positive pole of diode D3 is connected camera drive control circuit's charging end CHG _ IN, diode D3's positive pole is connected with the one end of resistance R6, the other end of resistance R6 is connected with the one end of resistance R7, the ADC _ CHG _ IN port of first MCU chip is connected to the other end of resistance R6, the other end ground connection of resistance R7, the negative pole of diode D3 is connected with the one end of resistance R1.

Preferably, the switch K1 is a four-corner key switch, and a normally closed pin of the four-corner key switch is grounded.

Preferably, the model of the first MCU chip is PAN2025, and the model of the second MCU chip is ESP 32.

Preferably, the transistor Q1 is an N-type transistor, and the transistor Q2 is a P-type transistor.

The camera driving control circuit layout structure comprises a camera circuit board and a main control circuit board, wherein the second MCU chip, the FLASH chip and the switch K1 are installed in the camera circuit board, the diode D1, the diode D2, the diode D3, the resistor R1, the resistor R2, the resistor R3, the resistor R4, the resistor R5, the resistor R6, the resistor R7, the first MCU chip, the transistor Q1, the transistor Q2 and the capacitor C1 are installed on the main control circuit board, and circuits on the camera circuit board and the main control circuit board are connected through flat cables.

Preferably, the camera circuit board adopts a double-layer PCB structure, and the second MCU chip and the FLASH chip are respectively arranged on two sides of the camera circuit board.

Preferably, the pins of the second MCU chip penetrate through the through holes on the camera circuit board to be connected with the pins of the FLASH chip, and resistors are connected in series between the mutually connected pins of the second MCU chip and the FALSH chip.

The camera provided by the invention comprises the camera driving control circuit.

According to the toy provided by the invention, the camera is included.

Compared with the prior art, the invention has the following beneficial effects:

1. the camera driving control circuit provided by the invention is added with the automatic system startup and shutdown function during charging on the basis of the existing one-key startup and shutdown function.

2. The camera driving control circuit provided by the invention has the advantages of simple structure, lower manufacturing cost and convenience for large-scale production.

3. The camera driving control circuit layout provided by the invention adopts the arrangement of the two boards of the camera circuit board and the main control circuit board, so that the structure of the camera circuit board is compact, and the camera circuit board is convenient to install in a narrow space.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a control circuit diagram of a prior art camera;

fig. 2 is a circuit diagram of driving and controlling the camera according to the embodiment of the invention.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.

The invention provides a camera driving control circuit which comprises a one-key startup and shutdown circuit and an automatic startup and shutdown circuit during charging, wherein the one-key startup and shutdown circuit enables a system to be closed or started through keys, and the automatic startup and shutdown circuit during charging is used for automatically starting the system during charging and automatically closing the system during disconnection of charging in a system shutdown state.

Specifically, referring to fig. 2, the camera driving control circuit includes: the circuit comprises a switch K1, a diode D1, a diode D2, a diode D3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a first MCU chip, a second MCU chip, a FLASH chip, a transistor Q1, a transistor Q2 and a capacitor C1. The transistor Q1 is an N-type transistor, and the transistor Q2 is a P-type transistor.

One end of a switch K1 is connected with a VCC _ IN end, the other end of a switch K1 is respectively connected with the anode of a diode D1 and one end of a resistor R4, the switch K1 is a four-corner key switch, and a normally closed pin of the four-corner key switch is grounded; the other end of the resistor R4 is connected with one end of the resistor R5 and an ADC _ VCC _ IN port of the first MCU chip respectively, the model of the first MCU chip is PAN2025, the other end of the resistor R5 is grounded, the cathode of the diode D1 is connected with one end of the resistor R1, the anode of the diode D2 is connected with the SW _ CTRL port of the first MCU chip, and the other end of the diode D2 is connected with one end of the resistor R1.

The other end of the resistor R1 is connected with one end of a capacitor C1, one end of a resistor R2 and the gate of the transistor Q1 respectively, the other end of the capacitor C1 is connected with the other end of the resistor R2 and the source of the transistor Q1 respectively and is grounded, the drain of the transistor Q1 is connected with the gate of the transistor Q2 and one end of the resistor R3 respectively, the other end of the resistor R3 is connected with the source of the transistor Q2, the other end of the resistor R3 is connected with a VCC _ IN end, the drain of the transistor Q2 forms a VCC _ OUT end, the VCC _ OUT end is connected with a VCC2 port of the second MCU chip, the second MCU chip is connected with the FLASH chip, the second MCU chip and the FLASH chip are connected with the camera to control the working state of the camera, the model number of the second MCU chip is ESP32, and the drain of the transistor Q2 is connected with a VCC1 port of the first MCU chip.

The anode of the diode D3 is connected to the charging terminal CHG _ IN of the camera driving control circuit, the anode of the diode D3 is connected to one end of the resistor R6, the other end of the resistor R6 is connected to one end of the resistor R7, the other end of the resistor R6 is connected to the ADC _ CHG _ IN port of the first MCU chip, the other end of the resistor R7 is grounded, and the cathode of the diode D3 is connected to one end of the resistor R1.

The working principle of the circuit is as follows: when the switch K1 is closed, the terminal VCC _ IN goes high to the gate terminal of the transistor Q1, the transistor Q1 is turned on, the drain terminal of the transistor Q1 goes low, the transistor Q2 is turned on, and thus the terminal VCC _ IN and the terminal VCC _ OUT are turned on, and the system starts to operate. The first MCU chip controls the IO input port of the SW _ CTRL end to output high level, then the VCC _ IN and VCC _ OUT ends are continuously conducted, and the system continuously and normally works; IN the normal working process of the system, the switch KEY is closed again, the first MCU chip detects the high level state of the IO port of the ADC _ VCC _ IN, the first MCU chip controls the IO input port of the SW _ CTRL end to output low level, and after the switch K1 is lifted, the system is closed, so that the KEY on/off of the system is realized.

When the voltage is input into the charging port CHG _ IN, the CHG _ IN port is at a high level, the gate pin of the transistor Q1 is at a high level, the transistor Q1 is turned on, the drain of the transistor Q1 is at a low level, the transistor Q2 is turned on, and thus the VCC _ IN terminal and the VCC _ OUT terminal are turned on, and the system starts to operate.

The first MCU chip controls the IO port of the SW _ CTRL terminal to output a high level, then the VCC _ IN and VCC _ OUT terminals are continuously conducted, and when the charging port CHG _ IN port stops charging to a low level, the system can still continuously and normally work.

And controlling the IO port of the SW _ CTRL end to output a low level through the first MCU chip, stopping charging the CHG _ IN port of the charging port, and closing the system when the port is at the low level.

The system automatic power on/off function and one-key power on/off function during charging are controlled in the above mode, and the effects are as follows:

1) IN the system shutdown state, when the CHG _ IN port is charged, the system automatically and normally starts up, the charging of the CHG _ IN is removed, the system is automatically shut down, the automatic startup and shutdown function is normally realized, and the automatic startup and shutdown are normal.

2) When the system is IN a power-on state and the CHG _ IN port is charged, the system normally works, the charging of the CHG _ IN is removed, the system still normally works, and the system is powered off by pressing a KEY KEY. The automatic on-off does not affect the original working state of the system.

3) When the switch K1 is triggered, the system is normally started, the system starts to work normally, and in the normal working process of the system, the switch K1 is pressed, the system is shut down, and the one-key on-off is normal.

The utility model provides a camera drive control circuit layout structure, owing to the limited of overall dimension, camera drive control circuit layout is within 40.3mm 32mm size space, and not only need lay camera drive circuit in the circuit board, still need lay the circuit of image analysis processing to and power management circuit, and each signal is walked the line and is carried out the overall arrangement according to the standard.

The camera driving control circuit layout structure comprises a camera circuit board and a main control circuit board, wherein a second MCU chip, a FLASH chip and a switch K1 are installed in the camera circuit board, a diode D1, a diode D2, a diode D3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a first MCU chip, a transistor Q1, a transistor Q2 and a capacitor C1 are installed on the main control circuit board, circuits on the camera circuit board and the main control circuit board are connected through a flat cable, and the flat cable in the embodiment adopts a 10-pin double-row connector.

Because the FLASH chip has higher requirements on layout and routing, four-layer boards are generally used for layout and routing, and the FLASH chip and the second MCU chip need to be laid on the same side to prevent interference of peripheral circuits, power supplies and other signal lines. Due to the cost and the appearance of the cloth plate, the layout can be carried out only by using double-layer plates. When the double-layer board is used for layout, the second MCU chip and the FLASH chip are respectively arranged on two sides of the camera circuit board, so that the influence on the FLASH chip and the second MCU chip is reduced.

Pins on the second MCU chip penetrate through holes on the camera circuit board to be connected with pins of the FLASH chip, and resistors are connected in series between the pins which are connected with each other of the second MCU chip and the FALSH chip. The wiring is as short as possible while connection and signal stability are guaranteed, the distance between the CLK line and other signal lines can be kept more than 3 times of the line width, the back of the clock line is completely coated with a copper package for processing, the influence of other signal lines on the clock is effectively prevented, the communication effect of the second MCU chip and the FLASH chip is guaranteed, and the space is effectively utilized.

The invention also discloses a camera which adopts the camera driving control circuit, and a toy which adopts the camera.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims (10)

Translated fromChinese

1.一种摄像头驱动控制电路，其特征在于，包括：一键开关机电路和充电时自动开关机电路，所述一键开关机电路使系统通过按键进行关闭或启动，所述充电时自动开关机电路用于在系统关机状态下，当系统充电时能够自动启动，断开充电时系统自动关闭。1. A camera drive control circuit is characterized in that, comprising: a key switch circuit and an automatic switch circuit during charging, the one key switch circuit enables the system to be closed or started by pressing a button, and the automatic switch is automatically switched during the charging. The machine circuit is used to automatically start when the system is charging when the system is off, and automatically shut down when the charging is disconnected.2.根据权利要求1所述的一种摄像头驱动控制电路，其特征在于：所述摄像头驱动控制电路包括：开关K1、二极管D1、二极管D2、二极管D3、电阻R1、电阻R2、电阻R3、电阻R4、电阻R5、电阻R6、电阻R7、第一MCU芯片、第二MCU芯片、FLASH芯片、晶体管Q1、晶体管Q2和电容C1；2 . The camera drive control circuit according to claim 1 , wherein the camera drive control circuit comprises: a switch K1, a diode D1, a diode D2, a diode D3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, resistor R5, resistor R6, resistor R7, first MCU chip, second MCU chip, FLASH chip, transistor Q1, transistor Q2 and capacitor C1;所述开关K1的一端连接VCC_IN端，所述开关K1的另一端分别连接二极管D1的正极和电阻R4的一端，所述电阻R4的另一端分别连接电阻R5的一端和第一MCU芯片的ADC_VCC_IN端口，所述电阻R5的另一端接地，所述二极管D1的负极与电阻R1的一端连接，所述二极管D2的正极连接第一MCU芯片的SW_CTRL端口，所述二极管D2的另一端与电阻R1的一端连接；One end of the switch K1 is connected to the VCC_IN terminal, the other end of the switch K1 is respectively connected to the anode of the diode D1 and one end of the resistor R4, and the other end of the resistor R4 is respectively connected to one end of the resistor R5 and the ADC_VCC_IN port of the first MCU chip , the other end of the resistor R5 is grounded, the cathode of the diode D1 is connected to one end of the resistor R1, the anode of the diode D2 is connected to the SW_CTRL port of the first MCU chip, and the other end of the diode D2 is connected to one end of the resistor R1 connect;所述电阻R1的另一端分别连接电容C1的一端、电阻R2的一端以及晶体管Q1的栅极连接，所述电容C1的另一端分别连接电阻R2的另一端和晶体管Q1的源极并接地，所述晶体管Q1的漏极分别连接晶体管Q2的栅极和电阻R3的一端，所述电阻R3的另一端连接晶体管Q2的源极，所述电阻R3的另一端连接VCC_IN端，所述晶体管Q2的漏极构成VCC_OUT端，VCC_OUT端与第二MCU芯片的VCC2端口连接，所述第二MCU芯片与FLASH芯片连接，所述晶体管Q2的漏极连接第一MCU芯片的VCC1端口；The other end of the resistor R1 is respectively connected to one end of the capacitor C1, one end of the resistor R2 and the gate of the transistor Q1, and the other end of the capacitor C1 is respectively connected to the other end of the resistor R2 and the source of the transistor Q1 and is grounded. The drain of the transistor Q1 is respectively connected to the gate of the transistor Q2 and one end of the resistor R3, the other end of the resistor R3 is connected to the source of the transistor Q2, the other end of the resistor R3 is connected to the VCC_IN terminal, and the drain of the transistor Q2 is connected. The pole forms a VCC_OUT terminal, the VCC_OUT terminal is connected to the VCC2 port of the second MCU chip, the second MCU chip is connected to the FLASH chip, and the drain of the transistor Q2 is connected to the VCC1 port of the first MCU chip;所述二极管D3的正极连接所述摄像头驱动控制电路的充电端CHG_IN，所述二极管D3的正极与电阻R6的一端连接，所述电阻R6的另一端与电阻R7的一端连接，所述电阻R6的另一端连接第一MCU芯片的ADC_CHG_IN端口，所述电阻R7的另一端接地，所述二极管D3的负极与电阻R1的一端连接。The anode of the diode D3 is connected to the charging terminal CHG_IN of the camera drive control circuit, the anode of the diode D3 is connected to one end of the resistor R6, the other end of the resistor R6 is connected to one end of the resistor R7, and the other end of the resistor R6 is connected. The other end is connected to the ADC_CHG_IN port of the first MCU chip, the other end of the resistor R7 is grounded, and the cathode of the diode D3 is connected to one end of the resistor R1.3.根据权利要求2所述的摄像头驱动控制电路，其特征在于：所述开关K1为四角按键开关，所述四角按键开关的常闭引脚接地。3 . The camera drive control circuit according to claim 2 , wherein the switch K1 is a four-corner key switch, and the normally closed pin of the four-corner key switch is grounded. 4 .4.根据权利要求2所述的摄像头驱动控制电路，其特征在于：所述第一MCU芯片的型号为PAN2025，所述第二MCU芯片的型号为ESP32。4 . The camera drive control circuit according to claim 2 , wherein the model of the first MCU chip is PAN2025, and the model of the second MCU chip is ESP32. 5 .5.根据权利要求2所述的摄像头驱动控制电路，其特征在于：所述晶体管Q1为N型晶体管,所述晶体管Q2为P型晶体管。5. The camera drive control circuit according to claim 2, wherein the transistor Q1 is an N-type transistor, and the transistor Q2 is a P-type transistor.6.一种摄像头驱动控制电路布局结构，采用权利要求2-5任一项所述的摄像头驱动控制电路，其特征在于：包括摄像头电路板和主控电路板，所述第二MCU芯片、FLASH芯片和开关K1安装在摄像头电路板中，所述二极管D1、二极管D2、二极管D3、电阻R1、电阻R2、电阻R3、电阻R4、电阻R5、电阻R6、电阻R7、第一MCU芯片、晶体管Q1、晶体管Q2和电容C1安装主控电路板上，所述摄像头电路板和主控电路板上的电路通过排线进行连接。6. a camera drive control circuit layout structure, adopts the camera drive control circuit described in any one of claims 2-5, it is characterized in that: comprise camera circuit board and main control circuit board, described second MCU chip, FLASH The chip and switch K1 are installed in the camera circuit board, the diode D1, diode D2, diode D3, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, resistor R7, first MCU chip, transistor Q1 , the transistor Q2 and the capacitor C1 are installed on the main control circuit board, and the camera circuit board and the circuits on the main control circuit board are connected by cables.7.根据权利要求6所述的摄像头驱动控制电路布局结构，其特征在于：所述摄像头电路板采用双层PCB结构，所述第二MCU芯片和FLASH芯片分别布置在摄像头电路板的两面。7 . The camera drive control circuit layout structure according to claim 6 , wherein the camera circuit board adopts a double-layer PCB structure, and the second MCU chip and the FLASH chip are respectively arranged on both sides of the camera circuit board. 8 .8.根据权利要求7所述的摄像头驱动控制电路布局结构，其特征在于：所述第二MCU芯片的引脚穿过摄像头电路板上的过孔与FLASH芯片的引脚连接，所述第二MCU芯片和FALSH芯片相互连接引脚间串联有电阻。8. camera drive control circuit layout structure according to claim 7, is characterized in that: the pin of described second MCU chip is connected with the pin of FLASH chip through the via hole on camera circuit board, and described second A resistor is connected in series between the interconnecting pins of the MCU chip and the FALSH chip.9.一种摄像头，其特征在于：包括权利要求1-5任一项所述的摄像头驱动控制电路。9. A camera, characterized in that it comprises the camera drive control circuit of any one of claims 1-5.10.一种玩具，其特征在于：包括权利要求9所述的摄像头。10. A toy, characterized in that it comprises the camera of claim 9.

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