CN212231639U

CN212231639U - Device for acquiring deflection angle of array camera equipment

Info

Publication number: CN212231639U
Application number: CN202021182811.5U
Authority: CN
Inventors: 闫军; 王广宇
Original assignee: Intelligent Interconnection Technologies Co ltd
Current assignee: Smart intercommunication Technology Co.,Ltd.
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2020-12-25
Anticipated expiration: 2030-06-23

Abstract

The utility model relates to a drive test parking technology field, concretely relates to collection system of array camera equipment deflection angle, including power voltage stabilizing circuit 1, MCU circuit 2 of gathering array camera equipment deflection angle, gyroscope circuit 3 of detecting and calculating array camera equipment deflection angle data, communication interface circuit 4 and network transmission circuit 6 with data communication; the MCU circuit 2 is respectively connected with the gyroscope circuit 3, the communication interface circuit 4 and the network transmission circuit 6; the power supply voltage stabilizing circuit 1 is respectively connected with the MCU circuit 2, the gyroscope circuit 3, the communication interface circuit 4 and the network transmission circuit 6 so as to realize direct current power supply. The utility model discloses can detect the transform that the gesture position of array camera equipment produced because of receiving the influence of factors such as external force vibrations, realize the gesture position of accurate real-time detection array camera equipment, provide necessary prerequisite guarantee for array camera equipment accurately according to image recognition license plate.

Description

Device for acquiring deflection angle of array camera equipment

Technical Field

The utility model relates to a drive test parking technical field, concretely relates to collection system of array camera equipment deflection angle.

Background

At present of economic rapid development, the living standard and income of people are continuously improved, the quantity of the preserved urban motor vehicles is rapidly increased, but along with the increase of gaps of urban parking spaces, the parking spaces can not meet huge parking demands, contradictions between the parking spaces and the parking demands are increasingly sharp, especially on two sides of urban roads, because the shortages of roadside parking spaces and the traffic safety awareness of more motor vehicle drivers are thin, urban roadside parking and roadside illegal parking become one of the aeipathia of urban management, the problems of traffic jam, disordered parking and the like are brought about to seriously restrict the rapid development of the cities, and meanwhile, the appearance and the living environment of residents of the cities are seriously influenced, so the treatment degree of the roadside parking and the roadside illegal parking of the cities is reached.

In the existing intelligent parking/illegal parking management system, the monitoring area is usually monitored by using an image monitoring device, however, the video image collected by the camera is easily affected by the environment, the shooting angle needs to be adjusted according to the specific situation, the shooting angle of the image monitoring device can be controlled in the prior art, however, because the sensitivity of the device has errors or is influenced by factors such as external wind power, the angle of the adjusted image monitoring device has errors, the prior art cannot determine the shooting angle of the image monitoring device according to the physical position of the image monitoring device, thereby being incapable of correcting the angle data of the image monitoring equipment, easily causing errors in the image detection result, therefore, there is a need for an apparatus for determining a photographing angle of an image monitoring apparatus according to a physical location of the image monitoring apparatus, so that the accuracy of vehicle detection can be greatly improved.

Disclosure of Invention

The to-be-solved technical problem of the utility model lies in, overcomes the not enough of current technique, provides the device in the gesture position that can accurate real-time detection array camera equipment.

In order to achieve the technical purpose, the utility model discloses an acquisition device of array camera equipment deflection angle, including power voltage stabilizing circuit, the MCU circuit of gathering array camera equipment deflection angle, detect and calculate the gyroscope circuit of array camera equipment deflection angle data, with data communication's communication interface circuit and network transmission circuit;

the MCU circuit is respectively connected with the gyroscope circuit, the communication interface circuit and the network transmission circuit;

the power supply voltage stabilizing circuit is respectively connected with the MCU circuit, the gyroscope circuit, the communication interface circuit and the network transmission circuit so as to realize direct current power supply.

Further, the gyroscope circuit includes a gyroscope chip;

and the gyroscope chip is connected with the MCU circuit.

Furthermore, the MCU circuit comprises a reset circuit, a crystal oscillator circuit, a burning interface, a serial port debugging interface, an LED circuit and an MCU circuit controller;

the reset circuit, the crystal oscillator circuit, the burning interface, the serial port debugging interface and the LED circuit are directly connected to the MCU circuit controller through leads.

Further, the communication interface circuit comprises a communication interface chip, an optical coupler transmitting circuit, an optical coupler receiving circuit, a first protection element and a second protection element;

the optical coupler transmitting circuit and the optical coupler receiving circuit are communicated with the MCU circuit through a serial port and are connected to a communication interface chip;

the first protection element and the second protection element are connected in parallel to the 7 th pin and the 6 th pin of the communication interface chip.

Further, the opto-coupler transmitting circuit with the opto-coupler receiving circuit pass through the serial ports with the MCU circuit communication specifically includes:

a 1 st pin of the communication interface chip is connected to a 2 nd pin of the optocoupler receiving circuit, and a 4 th pin of the optocoupler receiving circuit is directly connected with the MCU circuit; and

and a 4 th pin of the communication interface chip is connected to a 3 rd pin of the optocoupler sending circuit, and a 1 st pin of the optocoupler sending circuit is directly connected with the MCU circuit.

Further, the communication interface circuit comprises a reserved external device interface;

and connecting the external expansion equipment through the third pin and the 4 th pin of the reserved external equipment interface so as to be used for communicating with the external expansion equipment.

Furthermore, the network transmission circuit comprises a network control circuit and a network port level conversion circuit, and the network control circuit comprises a network transmission chip;

the network port level conversion circuit is directly connected to the network transmission chip;

wherein, network transmission circuit links to each other with the one end of serial peripheral interface, the other end of serial peripheral interface links to each other with the MCU circuit, specifically includes:

the network transmission chip is directly connected with one end of the serial peripheral interface, and the other end of the serial peripheral interface is directly connected with the MCU circuit.

Further, the power supply voltage stabilizing circuit comprises a DC-DC circuit and an LDO circuit, wherein the DC-DC circuit and the LDO circuit are used for realizing wide-range voltage input;

the DC-DC circuit comprises a power supply voltage stabilizing chip, a first resistor, a second resistor, an inductor, a first capacitor, a second capacitor and a third capacitor;

the other end of the inductor, one end of the first resistor, one end of the first capacitor and one end of the second capacitor are respectively connected with a 5V power supply;

one end of the first resistor and the other section of the second capacitor are respectively grounded;

the third capacitor is connected in parallel to two ends of the second capacitor.

Further, the DC-DC circuit includes a light emitting diode;

one end of the light emitting diode is connected to one end of a third resistor, the other end of the light emitting diode is grounded, and the other end of the third resistor is connected with a 3.3V power supply.

Optionally, the system further comprises an environment detection circuit for detecting an external environment;

the environment detection circuit comprises a temperature and humidity sensor;

the temperature and humidity sensor is directly connected with the MCU circuit controller;

one end of the power supply voltage stabilizing circuit is connected with the environment detection circuit through a power supply line so as to realize direct current power supply.

The utility model can improve the flexibility and the safety of power supply, and provides important precondition guarantee for accurately detecting the attitude and the direction of the array camera equipment in real time; the method can detect the change of the attitude and the orientation of the array camera equipment caused by the influence of factors such as external force vibration and the like, realize the accurate real-time detection of the attitude and the orientation of the array camera equipment, provide necessary precondition guarantee for the array camera equipment to accurately identify the license plate according to the image, and further improve the accuracy rate of detecting the license plate based on the image identification; the data communication of the network can be realized conveniently at a high speed, and further, the efficiency of detecting the license plate based on image recognition is improved; meanwhile, the construction cost of the equipment is reduced, and the method is suitable for parking matrix application scenes in a wider range.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic circuit diagram of a gyroscope circuit according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a circuit structure of the MCU circuit according to the embodiment of the present invention;

fig. 4 is a schematic circuit diagram of a burning interface according to an embodiment of the present invention;

fig. 5 is a schematic circuit diagram of a debug interface according to an embodiment of the present invention;

fig. 6 is a schematic circuit diagram of a communication interface according to an embodiment of the present invention;

fig. 7 is a schematic circuit diagram of a network control circuit according to an embodiment of the present invention;

fig. 8 is a schematic circuit diagram of a network port level conversion circuit according to an embodiment of the present invention;

fig. 9 is a schematic circuit diagram of a circuit structure for voltage stabilization of the power supply in the embodiment of the present invention;

fig. 10 is a schematic circuit diagram of an environment detection circuit according to an embodiment of the present invention;

fig. 11 is a schematic circuit diagram of a reset circuit according to an embodiment of the present invention;

fig. 12 is a schematic circuit diagram of a crystal oscillator circuit according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The device for acquiring the deflection angle of the array camera equipment shown in fig. 1 includes a gyroscope circuit 3 for detecting and calculating the deflection angle data of the array camera equipment, a communication interface circuit 4 for communicating with data, a network transmission circuit 6, an MCU (micro controller Unit) circuit 2 for acquiring the deflection angle of the array camera equipment, a power supply voltage stabilizing circuit, and an environment detection circuit 5; the gyroscope Circuit 3 is connected with the MCU Circuit 2 through a serial interface I2C (Inter-Integrated Circuit, I2C bus); the communication interface circuit 4 is connected with the MCU circuit 2 through a Universal Asynchronous Receiver Transmitter (UART); the network transmission circuit 6 is connected with the MCU circuit 2 through a serial Peripheral interface SPI (Serial Peripheral interface) so as to realize data communication between the network transmission circuit 6 and the MCU circuit 2 and realize butt joint of an acquisition device of the deflection angle of the array camera equipment and a background server; one end of the power supply voltage stabilizing circuit is respectively connected with the gyroscope circuit 3, the communication interface circuit 4, the environment detection circuit 5, the network transmission circuit 6 and the MCU circuit 2 through power supply lines so as to realize direct current power supply. The utility model discloses an implementation process does, be equipped with array camera equipment deflection angle's collection system's array camera equipment installation back, the server can send an instruction through the network and make the three attitude angle of current array camera equipment, the azimuth, pitch angle and roll angle zero clearing, if array camera equipment receives external force vibrations, perhaps external force makes current three attitude deflection angle skew, the skew angle exceeds predetermined threshold value simultaneously, array camera equipment deflection angle's collection system will upload alarm information and deflection angle information to the server immediately, afterwards, backend server can calculate according to corresponding deflection angle data, thereby improve the rate of accuracy of discernment license plate.

In a possible implementation manner, as shown in fig. 2, the gyroscope circuit 3 of the acquisition device of the deflection angle of the array camera device includes a gyroscope chip U3 and a peripheral configuration circuit, and the gyroscope chip U3 employs a MEMS sensor; the gyroscope chip U3 is connected with the MCU circuit 2 through a serial interface I2C; the gyroscope chip U3 can detect triaxial acceleration and angular velocity data through the configuration of a peripheral configuration circuit, and communicate with the MCU circuit 2 through the serial interface I2C, and the MCU circuit 2 can read the triaxial acceleration and angular velocity data through the serial interface I2C.

In a possible implementation manner, as shown in fig. 3, the MCU circuit 2 of the acquisition apparatus of the deflection angle of the array camera device includes a reset circuit, a crystal oscillator circuit, a burning interface J2, a serial port debugging interface J6, an LED circuit, and a controller U2 of the MCU circuit 2, that is, a chip of the MCU circuit 2; the burning interface J2 is shown in fig. 4, the serial port debugging interface J6 is shown in fig. 5, the burning interface J2 and the serial port debugging interface J6 are directly connected with the MCU circuit 2 through wires, the reset circuit is shown in fig. 11, and the crystal oscillator circuit is shown in fig. 12. After the MCU circuit 2 reads the triaxial acceleration and angular velocity data through the serial interface I2C, the four elements and the Euler angle are resolved through software data fusion and Kalman filtering, so that the angle operation under the condition of small horizontal attitude change can be realized, and the three angles of an azimuth angle, a pitch angle and a roll angle are calculated. MCU circuit 2's reset circuit, crystal oscillator circuit, the normal work of MCU circuit 2 controller U2 has been guaranteed, download the program for the controller through burning interface J2, can export debugging information through serial ports debugging interface J6 at the program debugging and make things convenient for the program debugging, MCU circuit 2 controller U2 has the high memory of dominant frequency greatly, advantages such as anti-interference ability is strong provide good operational environment for the program algorithm.

In a possible implementation manner, the communication interface circuit 4 of the acquisition device of the deflection angle of the array camera device, as shown in fig. 6, includes a communication interface chip U5, an optical coupler transmitting circuit V6, an optical coupler receiving circuit V3, a first protection element V4, and a second protection element V5; wherein, communication interface chip U5 can be the RS485 chip, communication interface chip U5 passes through serial ports and MCU circuit 2 communication, adopt high-speed optoelectronic isolation mode, can convert TTL (Time To Live) level into RS485 bus signal, with external communication, communication interface circuit 4 can insert modules such as WIFI, ZIGBEE, GPRS, communicate with master equipment or server through the mode outside RS485, can select communication mode in a flexible way as required. The RS485 bus has long transmission distance and strong anti-interference capability, and can be connected with a plurality of devices in series on the bus, the devices can adopt a plurality of wiring modes, and one bus can be connected with a plurality of devices in series, thereby reducing the construction difficulty; because the RS485 bus is half-duplex communication, in order to prevent each device from contending for the bus, the embedded devices are adopted to sequentially inquire according to the serial numbers of the slave devices for communication.

Further, the optocoupler transmitting circuit V6 optocoupler receiving circuit V3 communicates with the MCU circuit 2 through a serial port and is connected to the communication interface chip U5; the first protection element V4 and the second protection element V5 are connected in parallel to the 7 th pin and the 6 th pin of the communication interface chip U5, and the communication interface chip U5 is protected by absorbing instantaneous current of the 6 th pin and the 7 th pin of the communication interface chip U5, so that voltage stability can be realized, and the purpose of protecting the chip is achieved.

Further, the optocoupler sending circuit V6 and the optocoupler receiving circuit V3 communicate with the MCU circuit 2 through a serial port, specifically including that a 1 st pin of the communication interface chip U5 is connected to a 2 nd pin of the optocoupler receiving circuit V3, and a 4 th pin of the optocoupler receiving circuit V3 is directly connected to the MCU circuit 2; and the 4 th pin of the communication interface chip U5 is connected to the 3 rd pin of the optocoupler sending circuit V6, and the 1 st pin of the optocoupler sending circuit V6 is directly connected with the MCU circuit 2. The MCU circuit 2 is communicated with a light supplement lamp with an RS485 protocol outside through a UART interface via the communication interface circuit 4, the brightness and the switch of the light supplement lamp can be remotely controlled, the brightness and the switch state of the light supplement lamp can be monitored in real time, and a good light environment is provided for license plate identification. When the controller is communicated with the light supplement lamp, the MCU circuit 2 controller U2 sends UART data, an optical coupler sending circuit V6 which converts an electric signal into an optical signal outputs an isolation TTL signal, such as a level signal of 0-3.3V, and then the isolation TTL signal is converted into an RS485 level signal through a communication interface chip U5 and output to the light supplement lamp; when receiving the data of the light supplement lamp, the RS485 level signal output by the light supplement lamp is converted and isolated by the communication interface chip U5 to obtain the TTL level signal, and then the UART data is isolated and output to the pin of the MCU circuit 2 controller U2 by the optical coupling receiving circuit V3.

Wherein, the communication interface circuit 4 comprises a reserved external device interface J8; connect a plurality of outside extension equipment through the third pin and the 4 th pin of reserving external device interface J8 to be used for carrying out the communication with outside extension equipment, make MCU circuit 2 controller U2 can simply conveniently control other outside extension equipment simultaneously in the condition that does not change the circuit, like external radar etc..

In a possible implementation manner, the network transmission circuit 6 of the acquisition device of the deflection angle of the array camera device includes a network control circuit, as shown in fig. 7, and a network port level conversion circuit, as shown in fig. 8, the network control circuit includes a network transmission chip U1; the network port level conversion circuit is directly connected to the network transmission chip U1; wherein, network transmission circuit 6 links to each other with serial peripheral interface SPI's one end, and serial peripheral interface SPI's the other end links to each other with MCU circuit 2, specifically includes: the network transmission chip U1 is directly connected with one end of the serial peripheral interface SPI, and the other end of the serial peripheral interface SPI is directly connected with the MCU circuit 2. The network control circuit is composed of a network transmission chip U1 with a TCP protocol stack and a peripheral configuration circuit; the network port level conversion circuit is composed of a mutual inductance transformer and a peripheral bias circuit. Network transmission circuit 6 directly links the back through serial peripheral interface SPI and MCU circuit 2, works out the azimuth, the angle of pitch, roll three angle after MCU circuit 2 and accessible serial peripheral interface SPI transmits network control circuit, and rethread network control circuit sends this three angle to the server, provides real-time azimuth, angle of pitch, roll three angle data. When the MCU circuit 2 communicates with the server, the MCU circuit 2 controller U2 sends data to the network control circuit through the serial peripheral interface SPI, and the network control circuit generates TCP protocol data suitable for network communication, and outputs the TCP protocol data to the external network through the level isolation transformer T1 of the port level conversion circuit in fig. 7, thereby implementing network transmission of the data. The network is adopted to transmit data, and the network protocol is universal, so that the construction hardware cost is reduced, further, the equipment is convenient to wire, the connection quantity is large, and meanwhile, seamless hardware interface butt joint with the array camera equipment is realized.

In a possible implementation manner, the power supply voltage stabilizing circuit of the acquisition device of the deflection angle of the array camera device, as shown in fig. 9, includes a DC-DC circuit 7 and an LDO circuit 8, where the DC-DC circuit 7 and the LDO circuit 8 are used to implement wide-range voltage input; the DC-DC circuit 7 comprises a power supply voltage stabilizing chip U18, a first resistor R73, a second resistor R74, an inductor L21, a first capacitor C73, a second capacitor C74 and a third capacitor C75; the other end of the inductor L21, one end of the first resistor R73, one end of the first capacitor C73 and one end of the second capacitor C74 are respectively connected with a 5V power supply; one end of the first resistor R73 and the other end of the second capacitor C74 are respectively grounded; the third capacitor C75 is connected in parallel across the second capacitor C74. Wherein the DC-DC circuit 7 includes a light emitting diode D5 for indicating whether the power supply is normal; one end of the light emitting diode D5 is connected to one end of the third resistor R63, the other end of the light emitting diode D5 is grounded, and the other end of the third resistor R63 is connected to a 3.3V power supply. An LED circuit is arranged at the output end of the power voltage stabilizing circuit to indicate whether the power supply is normal or not; power supply voltage stabilizing circuit passes through the power supply line and respectively with gyroscope circuit 3, communication interface circuit 4, environment detection circuitry 5, network transmission circuit 6 and MCU circuit 2 directly link, in order to realize direct current power supply, wherein, output voltage is gathered to first resistance R73 and second resistance R74, in order to guarantee to provide accurate 5V voltage output, inductance L21 is the energy storage key component of DC-DC circuit 7, inductance L21 and first electric capacity C73, second electric capacity C74, third electric capacity C75 output filtering key component, after that through 8 steady voltage of LDO circuit to 3.3V, realize supplying power for other components. The light emitting diode D5 is used to confirm whether the power supply section is normally operated at the time of installation and debugging.

In a possible implementation manner, the environment detection circuit 5 for detecting the external environment in the acquisition device of the deflection angle of the array camera apparatus, as shown in fig. 10, includes a temperature and humidity sensor V1; the temperature and humidity sensor V1 is directly connected with the MCU circuit 2 controller U2; as shown in fig. 3, the environment detection circuit 5 is directly connected to a pin of the controller U2 of the MCU circuit 2 through a network line SEN _ IO, so that the MCU circuit 2 can read the temperature and humidity value of the temperature and humidity sensor V1, and transmit the environment temperature and humidity of the array camera device to the server in real time through the network control circuit.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The device for acquiring the deflection angle of the array camera equipment is characterized by comprising a power supply voltage stabilizing circuit (1), an MCU (microprogrammed control unit) circuit (2) for acquiring the deflection angle of the array camera equipment, a gyroscope circuit (3) for detecting and calculating deflection angle data of the array camera equipment, a communication interface circuit (4) for communicating with data and a network transmission circuit (6);

the MCU circuit (2) is respectively connected with the gyroscope circuit (3), the communication interface circuit (4) and the network transmission circuit (6);

the power supply voltage stabilizing circuit (1) is respectively connected with the MCU circuit (2), the gyroscope circuit (3), the communication interface circuit (4) and the network transmission circuit (6) to realize direct current power supply.

2. The acquisition device according to claim 1, characterized in that: the gyroscope circuit (3) comprises a gyroscope chip (U3);

the gyroscope chip (U3) is connected with the MCU circuit (2).

3. The acquisition device according to claim 2, characterized in that: the MCU circuit (2) comprises a reset circuit, a crystal oscillator circuit, a burning interface (J2), a serial port debugging interface (J6), an LED circuit and an MCU circuit controller (U2);

the reset circuit, the crystal oscillator circuit, the burning interface (J2), the serial port debugging interface (J6) and the LED circuit are directly connected to the MCU circuit controller (U2) through leads.

4. The acquisition device according to claim 3, characterized in that the communication interface circuit (4) comprises a communication interface chip (U5), an opto-coupler transmission circuit (V6), an opto-coupler reception circuit (V3), a first protection element (V4) and a second protection element (V5);

the optical coupler transmitting circuit (V6) and the optical coupler receiving circuit (V3) are communicated with the MCU circuit through serial ports and connected to a communication interface chip (U5);

the first protection element (V4) and the second protection element (V5) are connected in parallel to the 7 th pin and the 6 th pin of the communication interface chip (U5).

5. The acquisition device according to claim 4, wherein the optocoupler transmission circuit (V6) and the optocoupler receiving circuit (V3) communicate with the MCU circuit (2) via a serial port, and specifically comprise:

a 1 st pin of the communication interface chip (U5) is connected to a 2 nd pin of the optical coupler receiving circuit (V3), and a 4 th pin of the optical coupler receiving circuit (V3) is directly connected with the MCU circuit (2); and

the 4 th pin of the communication interface chip (U5) is connected to the 3 rd pin of the optical coupler sending circuit (V6), and the 1 st pin of the optical coupler sending circuit (V6) is directly connected with the MCU circuit (2).

6. The acquisition device according to claim 4, characterized in that said communication interface circuit (4) comprises a reserved external equipment interface (J8);

and connecting an external expansion device through the third pin and the 4 th pin of the reserved external device interface (J8) for communication with the external expansion device.

7. The acquisition device according to claim 6, characterized in that: the network transmission circuit (6) comprises a network control circuit and a network port level conversion circuit, and the network control circuit comprises a network transmission chip (U1);

the network port level conversion circuit is directly connected to the network transmission chip (U1);

wherein, network transmission circuit links to each other with the one end of Serial Peripheral Interface (SPI), the other end of Serial Peripheral Interface (SPI) links to each other with MCU circuit (2), specifically includes:

the network transmission chip (U1) is directly connected with one end of a Serial Peripheral Interface (SPI), and the other end of the Serial Peripheral Interface (SPI) is directly connected with the MCU circuit (2).

8. The acquisition device according to claim 7, characterized in that: the power supply voltage stabilizing circuit (1) comprises a DC-DC circuit and an LDO circuit, wherein the DC-DC circuit and the LDO circuit are used for realizing wide-range voltage input;

the DC-DC circuit comprises a power supply voltage stabilizing chip (U18), a first resistor (R73), a second resistor (R74), an inductor (L21), a first capacitor (C73), a second capacitor (C74) and a third capacitor (C75);

the other end of the inductor (L21), one end of the first resistor (R73), one end of the first capacitor (C73) and one end of the second capacitor (C74) are respectively connected with a 5V power supply;

one end of the first resistor (R73) and the other segment of the second capacitor (C74) are respectively grounded;

the third capacitor (C75) is connected in parallel across the second capacitor (C74).

9. The acquisition device according to claim 8, characterized in that: the DC-DC circuit comprises a light emitting diode (D5);

one end of the light emitting diode (D5) is connected to one end of a third resistor (R63), the other end of the light emitting diode (D5) is grounded, and the other end of the third resistor (R63) is connected with a 3.3V power supply.

10. Acquisition device according to any one of claims 1 to 9, characterized by further comprising an environment detection circuit (5) to detect an external environment;

the environment detection circuit comprises a temperature and humidity sensor (V1);

the temperature and humidity sensor (V1) is directly connected with the MCU circuit controller (U2);

one end of the power voltage stabilizing circuit (1) is connected with the environment detection circuit (5) through a power supply line so as to realize direct current power supply.