CN204330060U - A kind of direct-reading shooting remote transmitting water meter - Google Patents

Abstract

The utility model discloses a direct-reading camera remote transmission water meter, comprising: a circuit board and a data line, the data line is electrically connected to the circuit board, and a dual-mode controller and a camera are arranged on the circuit board , the camera is located above the wheel window of the water meter, and the dual-mode controller is electrically connected to the camera. Through the above method, the direct-reading camera remote water meter provided by the utility model has high accuracy of direct reading, and can obtain real-time images of the water meter, which reduces reading disputes with users, and the photos on the front of the water meter are helpful Judgment of faults reduces a lot of troubleshooting costs, saves precious time, and brings more convenience to the staff and users of the water company. The dual-mode water meter is the first in China, and it is in a leading position in technology.

Description

A direct-reading camera remote water meter

technical field

The utility model relates to a water meter, in particular to a direct-reading camera remote transmission water meter.

Background technique

At present, domestic remote water meters are relatively mature in terms of accuracy and reliability of readings. However, there are still some problems with inaccurate readings in remote water meters. Users do not trust direct reading data. Waiting for some faults. When these faults occur, it takes a certain amount of manpower and time to confirm the reading with the user and the maintenance personnel to confirm whether a fault has occurred. This not only consumes manpower, material resources, and financial resources, but also brings to the user. Certain trouble.

In response to the defects mentioned in the previous paragraph, some water meter manufacturers have developed pure camera water meters. The disadvantage of pure camera is that image recognition and processing need to be performed on the camera side, and complex processing modules need to be built around the water meter, requiring more power supply. The processing module also brings about an increase in manufacturing costs and maintenance costs. More importantly, the accuracy of pure camera meters is generally low, and remote meters without qualified accuracy rates are not advisable.

Utility model content

The technical problem mainly solved by the utility model is how to provide a direct-reading camera remote transmission water meter with high accuracy of direct reading, and can obtain real-time images of the water meter, reducing reading disputes with users, and photos of the front of the water meter It helps to judge the fault, reduces a lot of troubleshooting costs, saves precious time, and brings more convenience to the staff and users of the water company. The dual-mode water meter is the first in China and is in the leading position in technology. status.

In order to solve the above technical problems, a technical solution adopted by the utility model is to provide a direct-reading camera remote water meter, including a circuit board and a data line, the data line is electrically connected to the circuit board, and the A dual-mode controller and a camera are arranged on the circuit board, and the camera is located above the wheel window of the water meter, and the dual-mode controller and the camera are electrically connected.

In a preferred embodiment, the direct-reading camera remote water meter includes an upper cover, the top plane of the upper cover is closed, the bottom surface is open, the circuit board is located inside the upper cover, and is located on the upper cover. On the top plane, the plane area of the circuit board is smaller than the top plane area of the upper cover, and the material of the upper cover is transparent.

In a preferred embodiment, the upper cover is also provided with a waterproof groove, the waterproof groove is provided with several bolt through holes, the bottom surface of the upper cover is circular, and the waterproof groove and the bolt through holes are all Located on the circumference of the bottom surface of the upper cover.

In a preferred embodiment, a waterproof joint is provided on the side of the upper cover, the data line is located outside the upper cover, and the data line is connected to the circuit board through a wire, and the waterproof joint is located on the data line. The outside of the connection with the circuit board.

In a preferred embodiment, a sealing ring is further provided on the waterproof groove, and the sealing ring is located at the inner edge of the waterproof groove.

In a preferred embodiment, the direct-reading camera remote water meter is further provided with a waterproof partition, and the waterproof partition is connected to the circuit board through wires, and the waterproof partition and the bottom surface of the upper cover are relatively movable.

In a preferred embodiment, the circuit board is further provided with several supplementary lights, and the supplementary lights are located on both sides of the camera head.

In a preferred embodiment, the dual-mode controller includes a single-chip microcomputer unit, a direct-reading unit and a camera unit, and the direct-reading unit and the camera unit are all communicated with the single-chip microcomputer unit, so that the single-chip microcomputer receives and processes directly The data of the reading unit and the camera unit are electrically connected to the camera.

In a preferred embodiment, the camera unit includes an image acquisition module and a shooting control module, the image acquisition module and the shooting control module are all connected to the single-chip microcomputer unit, and the shooting control module is connected to the single-chip microcomputer unit through Communication between the asynchronous transceiver transmitter and the image acquisition module.

The image acquisition module includes an image sensor and a digital signal processor, the image sensor and the digital signal processor are connected in communication, the image sensor sends an analog signal, and the digital signal processor outputs a digital signal after receiving the analog signal of the image sensor For image signals, the digital signal processor has a built-in image codec, which facilitates data acquisition by the dual-mode controller by realizing real-time encoding of analog signals and digital image signals.

In a preferred embodiment, the direct-reading unit includes direct-reading sensors, several repeaters, direct-reading water meter nodes, meter reading adapters, on-site copying units and management units, and the on-site reading unit passes through repeaters Copy the data of all direct-reading camera remote water meters under the repeater, and perform data copying on the direct-reading camera remote water meters of the entire network through the direct-reading water meter node, and the meter reading adapter uploads the read data to the management unit, At the same time, it supplies power for the direct-reading camera remote water meter.

The direct reading sensor adopts a four-in-one reading mode, the input voltage of the repeater is 5.0-15.0V, and the repeater is provided with an input port and an output port, the input port is a bus network interface, and the output port It is a direct-reading camera remote water meter network interface, the input port adopts four-wire binding post, and the output port adopts double four-wire binding post. The direct-reading water meter node is equipped with a battery repeater inside, which is used to control the communication distance of the network and networking. Number of.

The beneficial effects of the utility model are: high accuracy of direct reading, and real-time images of the water meter can be obtained, which reduces reading disputes with users, and the photos on the front of the water meter are helpful for judging faults, reducing a lot of troubleshooting It saves precious time and brings more convenience to the staff and users of the water company. The dual-mode water meter is the first in China, and it is in a leading position in technology.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work, wherein:

Figure 1 is a structural diagram of a preferred embodiment of a direct-reading camera remote transmission water meter of the present invention;

Fig. 2 is a schematic diagram of a dual-mode controller of a preferred embodiment of a direct-reading camera remote transmission water meter of the present invention;

Fig. 3 is a communication link connection principle diagram of a preferred embodiment of a direct-reading camera remote transmission water meter of the utility model;

Fig. 4 is a structural diagram of the use process of a preferred embodiment of a direct-reading camera remote water meter of the present invention;

Fig. 5 is a schematic diagram of the working method of the staff/users before using a direct-reading camera remote transmission water meter of the utility model;

Fig. 6 is a schematic diagram of the working mode of staff/users after using a direct-reading camera remote transmission water meter of the utility model.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figures 1-6, in a specific embodiment of the present invention, a direct-reading camera remote water meter is provided. The direct-reading camera remote water meter includes: a waterproof partition 1, an upper cover 3, a circuit board 2. Data line 7, waterproof groove 8 and sealing ring 10, the top plane of the upper cover 3 is closed, the bottom surface is open, the circuit board 2 is located inside the upper cover 3, and is located on the top plane of the upper cover 3 , the plane area of the circuit board 2 is smaller than the top plane area of the upper cover 3, and the material of the upper cover 3 is transparent. The sealing ring 10 is located at the inner edge of the waterproof groove 8 . The data line 7 is electrically connected to the circuit board 2, the circuit board 2 is provided with a dual-mode controller 21 and a camera 5, the camera 5 is located above the water meter wheel window, and the dual-mode Electrical connection between the module controller 21 and the camera 5. The side of the upper cover 3 is provided with a waterproof joint 6, the data line 7 is located outside the upper cover 3, and the data line 7 is connected to the circuit board 2 through a wire, and the waterproof joint 6 is located on the data line 7. On the outside of the connecting part with the circuit board 2, the sealing ring 10 is an "O" ring.

The waterproof groove 8 is provided with several bolt through holes 9, the bottom surface of the upper cover 3 is circular, and the waterproof groove 8 and the bolt through holes 9 are all located on the circumference of the upper cover 3 bottom surface. The waterproof partition 1 and the circuit board 2 are connected by wires, and the waterproof partition 1 and the bottom surface of the upper cover 3 can move relatively.

The circuit board 2 is also provided with a number of supplementary lights 11 , and the supplementary lights 11 are located on both sides of the camera 5 to cooperate with the use of the camera 5 .

The dual-mode controller 21 includes a single-chip microcomputer unit 22, a direct-reading unit 23 and a camera unit 24, and the direct-reading unit 23 and the camera unit 24 are all communicated with the single-chip microcomputer unit 22, so that the single-chip microcomputer receives and processes direct-reading The data of the unit 23 and the camera unit 24, the camera unit 24 is electrically connected to the camera 5.

The camera unit 24 includes an image acquisition module and a shooting control module, both of which are connected to the single-chip microcomputer unit 22 .

The image acquisition module includes an image sensor and a digital signal processor, the image sensor and the digital signal processor are connected in communication, the image sensor sends an analog signal, and the digital signal processor outputs a digital signal after receiving the analog signal of the image sensor For image signals, the digital signal processor has a built-in image codec, which facilitates data collection by the dual-mode controller 21 by realizing real-time encoding of analog signals and digital image signals.

The photographing control module and the single-chip microcomputer unit 22 communicate with the image acquisition module through an asynchronous transceiver transmitter.

The direct-reading unit includes direct-reading sensors, several repeaters, direct-reading water meter nodes, meter reading adapters, on-site copying units and management units, and the on-site copying unit reads all direct readings under the repeater through the repeater. Read the data of the camera remote water meter, and read the data of the direct reading camera remote water meter of the entire network through the direct reading water meter node. The meter reading adapter uploads the read data to the management unit, and simultaneously powered by.

The direct reading sensor adopts a four-in-one reading mode, the input voltage of the repeater is 5.0-15.0V, and the repeater is provided with an input port and an output port, the input port is a bus network interface, and the output port It is a direct-reading camera remote water meter network interface, the input port adopts four-wire binding post, and the output port adopts double four-wire binding post. The direct-reading water meter node is equipped with a battery repeater inside, which is used to control the communication distance of the network and networking. Number of.

In a specific implementation, the dual-mode water meter is mainly divided into three parts in terms of hardware design: MCU single-chip motherboard module, direct reading module and camera module. It can not only be integrated into a system, but also can be used as a single module to complete the functional tasks undertaken by each.

The camera module is an industrial-grade image processing module that integrates image acquisition, shooting control, data compression, and serial port transmission. It is equipped with a high-performance digital signal processing chip to achieve a high-ratio compression of the original image. The output format of the module adopts the standard JPEG format, which is conveniently compatible with various image processing software.

The key control module in the camera module will be described below for this embodiment, so that the utility model can more accurately reflect the content protected by the utility model.

The image acquisition module consists of the following two parts: image sensor and digital signal processing DSP; the image sensor parameters are shown in the table below. characteristic parameter Image Sensor Type CMOS 1/4 inch image pixels 300000 pixel size 6.0um*6.0um SNR 45DB Dynamic Range 60DB Maximum Image Transfer Rate 60fps for VGA image size 640*480; 320*240; 160*120 (optional) scan mode line-by-line scan dynamic power consumption 120mW Quiescent Current <20uA Operating Voltage DC-3V

Digital signal processing DSP parameters: DSP performs image processing such as AWB (automatic white balance), AE (automatic exposure), AGC (automatic gain control) on the analog signal from the CMOS sensor, and integrates image enhancement processing under low illumination, image noise intelligence Advanced technologies such as prediction and suppression, output high-quality digital image signals through the standard CCIR656 interface. The built-in JPEG codec of the DSP supports real-time encoding of the image acquisition CMOS sensor or the digital image processor surface of the CCIR656 video input. The external controller can easily read the M-JPEG image stream and easily realize the image acquisition. The parameters are as follows: support CCIR656 digital image output power consumption design; support UART, SPI interface for easy connection to different main controllers; support M-JPEG image output of VGA size up to 30 frames per second; built-in OSD supports character and image overlay; ultra-low Illumination picture enhancement technology; intelligent prediction and suppression of image noise; motion detection and automatic alarm; support for NTSC/PAL video output; support for the main controller to perform multiple controls on image processing.

Among them, the connection relationship between the sensor and DSP is as follows: CS_D0~CS_D7: 8-bit analog signal transmission channel; VSYNC: frame synchronization signal, representing the completion of a frame data transmission; HSYNC: line synchronization signal, representing a line data transmission Complete; PCLK: pixel synchronization signal, representing the completion of a pixel data transmission; PWDN: sensor enable control, low level on, high level off; SIO_C, SIO_D: IIC data communication interface; RESET: system reset pin.

Shooting control module: The shooting control function is mainly controlled by the single-chip microcomputer system. The single-chip microcomputer communicates with the image acquisition module through the UART port, and controls the start, process and end of the image acquisition through the built-in communication protocol. The specific workflow as follows:

(1) The single-chip microcomputer system initiates the image acquisition start signal;

(2) The image acquisition module is powered on, and self-checked and initialized with a slight delay;

(3) Set the picture size parameters, optional 640*480; 320*240; 160*120;

(4) Set the compression rate of the photo;

(5) Save the settings and reset the DSP;

(6) Clear the image buffer data;

(7) Send a camera command;

(8) Read the length of the captured picture;

(9) Carry out data calculations, store them in memory, and complete a picture reading.

It is necessary to integrate the camera module in the limited internal space of the watch body, rationally design the circuit board, and use the limited space more efficiently is a bright spot.

The camera 5 adopts the shooting position from top to bottom to take pictures of the word wheel window of the water meter. Therefore, the installation position of the module also has strict requirements, and it is fixed on the top of the transparent upper cover 3 of the water meter. Above, and through the adjustment of height and focal length, the entire character wheel window can be photographed completely and clearly. Under the above conditions, through a large number of experimental tests, therefore, the shortest distance between the selected camera 5 and the word wheel window is 4 cm.

In addition, the installation position of the camera module can not affect the user's observation of the data of the wheel window of the water meter. The experiment proves that the reading of the water meter can be observed normally at a height of 4 cm. The specific parameters of the camera 5 are as follows. characteristic parameter Image sensor size Length 8mm; Width 8mm; Height 6mm image pixels Not less than 100,000 focal length Minimum 4cm image size 640*480; 320*240; 160*120 Night vision infrared fill light need Working current 80mA Operating Voltage DC 5V

The wiring of the camera module bus: the camera module uses the internal bus 2 to realize the data communication between the module and the MCU microcontroller main board module. The internal bus 2 is composed of four signal lines, and the specific distribution is shown in the following table: and by opening a thin cable hole slot on the water surface panel, the internal bus 2 realizes that the camera module and the MCU at the bottom are connected from top to bottom through the flexible cable hole. Data communication between motherboard modules. 1, power supply VCC 2, Receive data RXD 3. Send data TXD 4. Ground GND

In the design of the direct-reading module, the direct-reading acquisition module follows the technology and space layout of the dry-type EV3 direct-reading meter. The installation position is embedded inside the water meter, and the data interaction with the MCU single-chip motherboard module is realized through the five-core cable. .

Firstly, an overall introduction to the remote meter reading system: the remote meter reading system mainly includes passive direct-reading water meters, bus-based direct-reading water meter repeaters, bus-based direct-reading water meter nodes, bus-based direct-reading water meter adapters, handheld computers and computers background management system etc.

The use of electronic remote water meters greatly facilitates water management departments and users. Meter reading does not need to go to the site, only the Internet can be used for copying, and the data of the water meter can be copied to the water company through remote copying by means of wireless GPRS communication. On the background system, the background software can be directly connected to the charging system; in places where there is no remote reading system such as the Internet, the meter reading personnel only need to go to the network interface of the community to copy with a handheld computer, which can realize a quick reading of water meter data. At the same time, the use of electronic remote water meters, on the one hand, greatly improves the work efficiency and the accuracy of water meter data, reduces the troubles caused by ordinary water meter door-to-door meter reading to users, and on the other hand eliminates the "manual meter reading" of ordinary water meters. "Humanity", data inaccuracy and other issues. In the construction of intelligent communities in the future, electronic remote water meters will replace ordinary water meters.

Among them, the direct-reading camera remote water meter adopts the RS485 bus method, adopts the four-wire method, two power lines, and two signal lines, and the data transmission method from the direct-reading camera remote water meter to the building repeater adopts It is RS485 way. The entire communication system adopts lightning surge protection design to ensure the safety and reliability of the system network.

The direct-reading camera remote water meter adopts position sensor technology, and the water meter does not need external power support for its operation. The water meter adopts the 485 bus working method, which can ensure the communication distance from the node to the farthest water meter is 1100m. The water meter adopts a four-wire connection method, including two power lines and two communication lines. The water meter connection on the network is connected to the bus by parallel connection. The distance to the bus is recommended not to exceed 2m. The maximum working voltage of the water meter wiring port shall not exceed DC 15V, and the minimum working voltage shall not be lower than 3.0V.

The water meter can be set with the water meter network number and the last identification number. The water meter network number adopts a number between 1 and 99. The water meter under the same repeater cannot have repeated numbers. Set the last identification number on the last water meter. The water meters with the last identification number cannot be copied during centralized copying.

The passive repeater is a centralized management device set up to increase the number of water meters. Each passive repeater can connect 99 water meters. In order to ensure the normal operation of the water meters under the repeater, the input voltage of the repeater must not Higher than 15V, not lower than 5.0V. Each repeater has input and output ports, the input port is the bus network interface, the output port is the water meter network interface, the input adopts four-wire binding posts, and the output adopts double four-wire binding posts (8 binding posts).

In addition, there is a DB9-pin connection port on each repeater, which can be used by the handheld computer to copy the water meter under the repeater, and each repeater can only copy any meter under the repeater. Up to 99 repeaters can be connected to the same bus, and the distance from the repeater to the water meter is less than 300m (as long as the working voltage at the farthest end of the water meter network is guaranteed, the distance can be far greater than 300m), and the repeater can be set as a repeater The number of the repeater (6 digits from 0 to 9) and the board number of the repeater (1 to 99), the board number of the repeater on each network cannot be repeated, just like the water meter, only the last one on the network The repeater sets the last identification number. Repeaters and water meters with the last identification number cannot be copied during centralized copying. All repeater board numbers and repeater numbers consist of 8 digits of 0-9 numbers that cannot be repeated.

The direct reading water meter node is equipped with a battery repeater to ensure the communication distance of the network and the number of networks. The power of the handheld may not guarantee the power consumption of the entire system. Two batteries are equipped in the repeater to ensure the system. In normal operation, the network power is supplied by the handset. When the power of the handset is low, the battery power supply is automatically activated. When the handset is plugged into the meter reading interface, the battery is connected to ensure the working life of the battery. The life of the battery is more than two years (reading every day Once, each copying time is 5 minutes). Each networking network only needs to be equipped with one meter reading node.

The tool used for on-the-spot copying by the handheld computer. The handheld computer can copy all the water meters under the repeater through the repeater, and the entire network can be copied through the meter reading node. The handheld computer can set the label of the water meter and the repeater. Single label copying, the entire network copying.

The meter reading adapter is a centralized management device on the site of the community. It reads the networked water meters and uploads the read data to the background server at regular intervals. At the same time, it provides power for the entire community equipment and water meters.

The following is an introduction to the operation status of the communication link: the direct-reading camera remote water meter adopts the RS485 bus mode, and the communication link includes a computer for remote meter reading or a handheld computer for on-site reading, the Internet, a bus-based direct-reading water meter adapter, Bus system direct reading water meter node, bus system direct reading water meter repeater, bus system direct reading water meter, communication cable.

When remotely copying water meter data, the adapter installed on the site of the community will automatically copy the water meter data according to the set time. After the copying is completed, it will actively connect to the background server, and then actively report the copied data to the server. The server will save the received data and make it available. Provide user queries. During remote reading, the communication between the meter reading host and the adapter at the reading site adopts the GPRS communication method, and the communication between the adapter at the reading site and the node/repeater, and between the node/repeater and the direct-reading water meter adopts RS-485 communication Way.

When reading on the spot, the handheld computer sends the meter reading command to the node/repeater, and the node/repeater sends the received meter reading command to the direct-reading water meter, and the direct-reading water meter returns the water meter data to the node/repeater through the node/repeater. Handheld machine, the communication adopts RS-485 communication mode.

The functions realized by the bus system direct-reading water meter adapter are to copy the network water meter data, establish a GPRS communication connection with the copying host, and return the received data to the copying host through the communication network, and at the same time, the adapter can send data to the node/intermediate connected to it. The relay provides power.

The direct-reading water meter node/repeater of the bus system is a centralized management device for regional water meters. It gathers certain water meters and communicates with the bus. Turn on the relay, turn on the system power supply, supply power to the water meter connected to it, and at the same time transmit the received meter reading command to the direct-reading water meter, and then return the received water meter data to the meter reading host. After the meter reading is completed, turn off The power supply that supplies power to the water meter. At any one time, at most one node/repeater on the network is open. The difference between a node and a repeater is that a battery is installed inside the node, which can supply power to other devices, and there is no battery inside the repeater, so it cannot supply power to other repeaters.

During use, you should pay attention to six aspects: 1. After the water meter is installed, the water meter number should be set according to the data. The water meter numbers under the same repeater/node cannot be the same; the last water meter should be set with the last mark . The setting of the water meter should be set individually, and cannot be set on the network. After setting the water meter, connect the water meter networking cable of the corresponding repeater; 2. After the repeater/node is installed, the number should be set according to the data. In the same network, The repeater/node numbers cannot be the same; the last repeater/node should be set with the last identifier. The setting of the repeater/node should be set individually, and cannot be set on the network. After setting the repeater/node, connect the network cable of the corresponding repeater; 3. Among the water meters connected to the network under each repeater, the last one The water meter is connected in parallel to a matching board; in the whole network, a matching board is connected in parallel to the input port of the last repeater; 4. The networking lines in the network cannot be short-circuited to avoid damage to the device; 5. The device adopts a low-power design, copying When the meter consumes a lot of power, try to unplug the meter reading head in time after the on-site meter reading is completed, so as to avoid unnecessary waste of power; 6. The equipment should be moisture-proof and waterproof.

Background software module operation: The background software is used to control the hardware. The camera 5 module starts, shoots, and sends pictures, which are all commanded by the background software. The following figure shows the workflow of the background software. For software modularization, it is necessary to meet the requirements of high cohesion and low coupling software engineering design, and to increase or decrease the camera module without changing the software;

The dual-mode water meter can obtain the real-time image of the water meter, which reduces the reading disputes with the user. Since the front of the water meter can be seen, it reduces the cost of a lot of troubleshooting and saves precious time. , The user has brought more convenience.

The dual-mode water meter improves the labor efficiency of the water supply service industry, saves costs, improves the accuracy of the direct-reading water meter, and thus greatly improves the trust and satisfaction of users.

The existence of images is very convincing to users, which greatly reduces disputes over water meter readings, and provides a new way for troubleshooting. It can be seen from the above points that the dual-mode water meter can bring great convenience in terms of use and maintenance compared to users.

Therefore, the beneficial effects that the direct-reading camera remote water meter disclosed in the utility model can achieve are as follows:

(1) It has a high accuracy rate of direct reading, and can obtain real-time images of the water meter, which reduces reading disputes with users. The photos on the front of the water meter are helpful for judging faults, reducing a lot of troubleshooting costs and saving The precious time has brought more convenience to the staff and users of the water company. The dual-mode water meter is the first in China, and it is in a leading position in technology;

(2) The direct-reading camera remote water meter adopts position-encoded direct-reading technology, adopts four-digit direct-reading sensor, and directly collects the sensor position signal when reading the meter, with no cumulative error and no external interference. The core components of the acquisition system are all imported. Industrial-grade components ensure stable and reliable operation of the system; the collection part adopts an integrated design, all sealed in a vacuum dry head, which can effectively prevent moisture at the installation site of the water meter; It can be powered by the handheld or node in an instant.

The above descriptions are only examples of the present utility model, and are not intended to limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the utility model description, or directly or indirectly used in other related technologies Fields are all included in the scope of patent protection of the utility model in the same way.

Claims (10)

1. A direct-reading camera remote transmission water meter, characterized in that it includes a circuit board (2) and a data line (7), the data line is electrically connected to the circuit board, and the circuit board is provided with A dual-mode controller (21) and a camera (5), the camera is located above the wheel window of the water meter, and the dual-mode controller and the camera are electrically connected. 2. The direct-reading camera remote water meter according to claim 1, characterized in that the direct-reading camera remote water meter includes an upper cover (3), the top plane of the upper cover is closed, and the bottom surface is an opening, The circuit board is located inside the upper cover and on the top plane of the upper cover, the plane area of the circuit board is smaller than the top plane area of the upper cover, and the material of the upper cover is transparent. 3. The direct-reading camera remote water meter according to claim 2, characterized in that, the upper cover is also provided with a waterproof groove (8), and the waterproof groove is provided with several bolt through holes (9), so The bottom surface of the upper cover is circular, and the waterproof grooves and bolt through holes are all located on the circumference of the bottom surface of the upper cover. 4. The direct-reading camera remote water meter according to claim 3, characterized in that a waterproof connector (6) is provided on the side of the upper cover, the data line is located outside the upper cover, and the data line and the circuit The boards are connected by wires, and the waterproof joint is located outside the connecting part between the data line and the circuit board. 5. The direct-reading camera remote water meter according to claim 3, characterized in that a sealing ring (10) is provided on the waterproof groove, and the sealing ring is located at the inner edge of the waterproof groove. 6. The direct-reading camera remote water meter according to claim 2, characterized in that the direct-reading camera remote water meter is also provided with a waterproof partition (1), and the waterproof partition and the circuit board are connected by wires, The waterproof partition can move relative to the bottom surface of the upper cover. 7. The direct-reading camera remote water meter according to claim 1, characterized in that, several supplementary lights (11) are arranged on the circuit board, and the supplementary lights are located on both sides of the camera. 8. The direct-reading camera remote water meter according to claim 1, characterized in that the dual-mode controller includes a single-chip microcomputer unit (22), a direct-reading unit (23) and a camera unit (24), the Both the direct reading unit and the camera unit are in communication connection with the single-chip microcomputer unit, so that the single-chip microcomputer receives and processes the data of the direct reading unit and the camera unit, and the said camera unit is electrically connected with the camera. 9. The direct-reading camera remote transmission water meter according to claim 8, wherein the camera unit includes an image acquisition module and a shooting control module, and the image acquisition module and the shooting control module are all connected to the single-chip microcomputer unit , the shooting control module and the single-chip microcomputer unit communicate between the asynchronous transceiver transmitter and the image acquisition module; The image acquisition module includes an image sensor and a digital signal processor, the image sensor and the digital signal processor are connected in communication, the image sensor sends an analog signal, and the digital signal processor outputs a digital signal after receiving the analog signal of the image sensor For image signals, the digital signal processor has a built-in image codec, which facilitates data acquisition by the dual-mode controller by realizing real-time encoding of analog signals and digital image signals. 10. The direct-reading camera remote water meter according to claim 8, characterized in that the direct-reading unit includes direct-reading sensors, several repeaters, direct-reading water meter nodes, meter reading adapters, on-site reading units and The management unit, the on-site copying unit reads the data of all direct-reading camera remote water meters under the repeater through the repeater, and performs data copying on the direct-reading camera remote water meters of the entire network through the direct-reading water meter node. The meter reading adapter uploads the read data to the management unit, and at the same time provides power for the direct-reading camera remote water meter; The direct reading sensor adopts a four-in-one reading mode, the input voltage of the repeater is 5.0-15.0V, and the repeater is provided with an input port and an output port, the input port is a bus network interface, and the output port It is a direct-reading camera remote water meter network interface, the input port adopts four-wire binding post, and the output port adopts double four-wire binding post. The direct-reading water meter node is equipped with a battery repeater inside, which is used to control the communication distance of the network and networking. Number of.