CN103472799B - Based on the intelligent curtain rolling machine system of image processing techniques - Google Patents

Abstract

The invention discloses an intelligent roller blind machine system based on image processing technology, comprising: a main control module, a weather station, a camera, a GPRS module, a swing rod and a roller blind machine motor. The system uses the main control module as the data processing and control platform, and establishes an intelligent weather recognition system based on weather images. By collecting meteorological information such as temperature, humidity, light, wind speed and direction from the weather station outside the greenhouse, combined with weather images, it can effectively judge Inclement weather such as rain and snow, so as to control the rolling and laying of the insulation quilt in time. Through the heat preservation positioning technology, the operator can precisely control the heat preservation to any position between its initial position and the end position when performing remote operation or operating in the control room. At the same time, intelligent fault diagnosis can be realized, and the working status of the roller shutter motor can be monitored in real time. When the roller shutter motor fails, the main control module will automatically cut off the power supply of the roller shutter machine, making the whole system safe and reliable.

Description

Intelligent shutter machine system based on image processing technology

technical field

The invention relates to an intelligent roller blind machine system, in particular to an intelligent roller blind machine system based on image processing technology, and belongs to the technical field of electronic control.

Background technique

At present, greenhouses have been widely used in the cultivation of various agricultural products, vegetable products, flowers, ornamental plants, etc., and the emergence of roller shutters has greatly promoted the mechanization of greenhouse operations. Usually, when the weather is fine during the day, roll up the thermal insulation quilt by the roller shutter machine, adjust the light time to increase the temperature in the shed, and at the same time make the plants in the shed absorb the sunlight; at night, the temperature is low or rain and snow are not good. When the weather is bad, the heat preservation quilt is laid by the roller shutter machine to insulate the greenhouse; so as to achieve the purpose of energy saving and heat preservation, and improve economic benefits.

In order to further improve the economic benefits of greenhouses, intelligently adjust the temperature, humidity, carbon dioxide, light time, soil moisture and other parameters in the greenhouses according to the growth model of the plants in the greenhouses, and properly adjust the time for crops to go to market to maximize their benefits. The latest direction of development. Among them, adjusting the light intensity and time is the most important part of crop growth, which requires that the roller shutter machine must have the function of accurately controlling the position of the insulation quilt. Only in this way can it achieve the purpose of combining with the growth model.

At present, the common common roller blind machine usually adopts the following two methods to operate: one is to manually turn on the power supply of the roller blind machine to control the rolling or laying of the insulation quilt. Second, for the sake of simple and convenient operation, the remote control is used to control the shutter machine, but the general remote control distance is only a dozen meters. The common feature of the two methods is that the operator must be on the greenhouse site, control the insulation to the required position through visual observation, and then disconnect the power supply of the roller shutter machine; therefore, the staff needs to go to the greenhouse site every day, especially in case of sudden In bad weather such as rain and snow, it is even more necessary for operators to rush to the scene to put down the insulation quilt. It can be said that the greenhouse roller blind machine cannot be separated from people. When it is necessary to operate multiple greenhouses, it takes a long time. Above-mentioned mode of operation has not only increased artificial labor intensity, has increased labor cost again.

Although the current few technologically advanced intelligent roller blind machines use programmable logic controllers (PLC) or embedded controllers, they control the rolling or laying of insulation quilts by collecting environmental parameters such as temperature, humidity, and light intensity outside the greenhouse. , to a certain extent to achieve intelligent control. However, there are still the following defects: (1) Only based on environmental parameters such as temperature, humidity and light intensity outside the greenhouse, only simple weather conditions can be discriminated; The combination of environmental parameters cannot realize the function of combining the growth model of the crops planted in the shed; (3) Only when the staff operates on site can the heat preservation be controlled to the required position, and the intelligent roller shutter machine can be used for remote operation or in-control When operating indoors, the insulation can only be fully rolled up or fully laid, and the insulation cannot be controlled at any designated position; (4) When performing remote operations or operating in the control room, the failure of the roller shutter machine cannot be checked. Timely and effective judgment and protection.

Contents of the invention

In view of this, the present invention provides an intelligent roller shutter system based on image processing technology, which can accurately and quickly identify the weather conditions outside the greenhouse in combination with weather images and meteorological parameters; Positioning, but also has intelligent fault diagnosis function.

The intelligent rolling machine system includes: a main control module, a weather station, a GPRS module, a swing rod and a rolling machine motor; the peripheral equipment is a greenhouse; the main control module is located in the control room; the weather station is installed on the top of the greenhouse , the weather station collects weather information outside the greenhouse in real time, and then sends the collected weather information to the main control module; the weather information includes ambient temperature, humidity, light, wind speed and wind direction; the swing rod is scalable, Its bottom is hinged with a fixedly installed support, and the swing rod can swing around the hinge point; the roller shutter motor is installed on the top of the swing rod, and the output shaft of the roller shutter motor is connected to the reel laid on the outer insulation quilt of the greenhouse , to drive the roll-up or laying of the thermal insulation quilt; the GPRS module is used to send the meteorological information outside the greenhouse and the location information of the thermal insulation quilt to the operator in the form of MMS, and accept the control instructions of the operator to remotely control the roller shutter machine. monitor.

Also comprise camera in addition; Described camera is installed on the top of control room by the fixed platform, and fixed platform adjusts the angle of camera under the control of main control module; image or video information.

The camera has three working modes. In the first working mode, the camera is aimed at the entire greenhouse to monitor the safety of the greenhouse; in the second working mode, the camera is aimed at the sky to collect sky images; in the third working mode, the camera is aimed at the heat preservation On the side where the roller shutter motor is installed, the side image of the greenhouse is collected.

In the main control module, there is a rain and snow weather image knowledge base pre-stored, and the rain and snow weather image knowledge base refers to images formed by extracting image features of common rain and snow weather and classifying rain and snow weather according to the extracted image features knowledge base; at the same time, the range of ambient temperature and humidity corresponding to each classification result is pre-stored in the main control module.

When the main control module preliminarily judges that there will be rainy and snowy weather according to the ambient temperature, humidity and light sent by the weather station; start the intelligent weather judgment mode: the main control module controls the camera to enter working mode two; the camera collects sky images at a set frequency, and Send the collected sky image to the main control module; the main control module extracts the image features of the received sky image, and compares the extracted image features with the image features of different types of rain and snow weather in the rain and snow weather image knowledge base .

If the image feature is identical with one of the image features, the main control module determines that the rain and snow weather of this category will occur, and the judgment result is sent to the operator through the GPRS module; if the image feature is consistent with all categories in the rain and snow weather image knowledge base If the image features of different images are different, the main control module reacquires the sky image until the received ambient temperature and humidity are not within the range of ambient temperature and humidity corresponding to all classifications.

The main control module pre-stores the lengths of the four sides of the side profile of the side of the greenhouse where the roller shutter motor is installed; It exists in the main control module; the main control module first controls the camera to enter working mode 3, and then starts the roller blind machine to drive the insulation to be laid or rolled; during this process, the camera collects the side image of the greenhouse in real time, and performs The image is subjected to edge extraction processing, and then the processed side profile of the greenhouse is sent to the main control module; the main control module determines the current position of the thermal insulation quilt according to the image; when the current position of the thermal insulation quilt is consistent with the preset position, Turn off the roller shutter motor; if the position of the heat preservation quilt does not change within the set time from the image, the main control module enters the fault diagnosis mode: in the fault diagnosis mode, the main control module first judges whether the current position is preset by the system position, if it is, then the main control module closes the roller shutter motor; if not, it thinks that the roller shutter motor has failed, and the main control module actively disconnects the power supply of the roller shutter motor, and sends a text message to the operator through the GPRS module Call the police.

Smear black paint on the edge of the thermal insulation side where the roller shutter motor is installed.

The main control module pre-stores the rotation angles required by the camera to fix the pan-tilt in three working modes.

An angle sensor is also included, and the angle sensor is installed at the bottom of the swing rod and moves together with the swing rod. The main control module is preset with the readings of the angle sensor when the pendulum is at the initial position and the end position. The main control module controls the angle sensor when the heat preservation is rolled up or laid in the main control module. readings; during the insulation is rolled up or laid, the angle sensor collects the angle information between the pendulum and the ground in real time, and sends the collected angle information to the main control module, and the main control module combines the received angle information with its internal The preset heat preservation is compared with the readings of the angle sensor at the set position, and when the two are consistent, the main control module closes the roller shutter motor. After the main control module receives the angle information sent by the angle sensor each time, it compares the angle information received at present with the angle information received at the previous time, and judges whether two adjacent angle information changes; If the secondary angle information changes, it is considered that the motor of the roller blind machine is working normally; if the angle information does not change within the set time, enter the fault diagnosis mode.

Install the angle sensor on the swing rod through a positioning mechanism; the positioning mechanism includes: connecting rod A, connecting rod B, central shaft, coupling and two bearings; one end of the connecting rod A is perpendicular to the swing rod connected, the other end is processed with an axial chute; the top of the connecting rod B is located in the chute, and can move axially in the chute; the bottom of the connecting rod B is fixed to the central shaft; the center The shaft is coaxial with the hinged shaft of the swing rod, and the angle sensor is fixedly connected to the end of the central axis close to one end of the swing rod through a shaft coupling.

It also includes a pull rope displacement sensor; the pull rope displacement sensor is fixed at the position when the heat preservation is completely laid or fully stowed; the pull rope end of the pull rope displacement sensor is fixedly connected to the motor of the roller blind machine. During the process that the main control module controls the heat preservation being rolled up or laid, the motor of the roller shutter machine and the heat preservation quilt move together, which drives the stretching movement of the pull rope displacement sensor; The displacement signal, and the main control module judges the position of the insulation quilt according to the displacement signal. After the main control module receives the displacement signal sent by the stay rope displacement sensor each time, it compares the displacement signal received at present with the displacement signal received at the previous time, and judges whether two adjacent displacement signals have changed; If the two displacement signals have changed, it is considered that the motor of the shutter machine is working normally; if the displacement signal does not change within the set time, it will enter the fault diagnosis mode.

On the greenhouse, a limit switch is set at the position where the heat preservation is completely laid and completely stowed. When the heat preservation is touched by the limit switch, it sends a signal that the heat preservation is in place to the main control module, and the main control module receives After the heat preservation signal is in place, turn off the roller shutter motor.

Beneficial effect:

(1) An intelligent weather recognition system based on weather images has been established. By collecting meteorological information such as temperature, humidity, light, wind speed and wind direction from the weather station outside the greenhouse, combined with weather images, it can effectively judge severe weather such as rain and snow, so as to control it in time The rolling and laying of the thermal insulation quilt realizes the intelligent judgment of the weather and the intelligent control of the roller shutter machine.

(2) The main control module in the system is used as a data processing and control platform, and it adopts a visual operation mode, which is easy to operate; the screen of the main control module displays all the detection data and real-time images of the position of the heat preservation quilt in real time. All operations are completed in the control room, which effectively reduces the labor intensity.

(3) Through the thermal insulation positioning technology, the operator can precisely control the thermal insulation at any position between its initial position and the end position when performing remote operation or operating in the control room, so that users can combine planting in the shed The parameters of the crop growth model control the laying and rolling of the insulation quilt, without the need for operators to go to the site for control.

(4) It can realize intelligent fault diagnosis, real-time monitoring of the working status of the shutter machine, and realize the intelligent protection of the shutter machine. When a failure occurs, the main control module automatically cuts off the power supply of the shutter machine, making the entire system safe and reliable.

(5) With remote monitoring function. The operator can control the greenhouse roller shutter machine by sending text messages through the mobile phone. The SMS content is sent according to the pre-set format. After the main control module receives the short message required by the specified format, it controls the shutter machine according to the requirements in the short message. At the same time, the main control module can regularly transmit the meteorological information outside the greenhouse and the position image of the thermal insulation quilt of the roller shutter machine to the corresponding mobile phone through the GPRS module according to the needs of the operator, for the operator's reference.

Description of drawings

Fig. 1 is the electrical connection diagram of described intelligent roller blind machine system;

Fig. 2 is a schematic diagram of the overall structure of the intelligent roller blind machine described in this embodiment;

Fig. 3 is a schematic diagram of an intelligent weather identification process;

Fig. 4 is the installation diagram of angle sensor;

Fig. 5 is the calculation schematic diagram of adopting image processing technology to locate the thermal insulation quilt;

Figure 6 is a schematic diagram of the fault diagnosis process.

Among them: 1-Greenhouse, 2-Insulation quilt, 3-Weather station, 4-Roller motor, 5-Swing rod, 6-Camera, 7-Angle sensor, 8-Connecting rod A, 9-Connecting rod B, 10-central axis

Detailed ways

This embodiment provides an intelligent roller blind machine system based on image processing and sensor technology, through which the precise positioning and intelligent protection of the roller blind machine can be implemented, and it has the functions of remote monitoring and intelligent fault diagnosis, saving manpower and material resources. In the following, three embodiments of the system are provided according to the different schemes for the precise positioning of the heat preservation.

Example 1:

The electrical part of the system includes a main control module, a weather station, a camera, a GPRS module, an extended control board, a limit switch and a shutter motor; the peripheral equipment is a greenhouse. The main control module in this embodiment adopts a PC104 computer, and the main control module is a data processing platform and a control platform. The PC104 computer in this embodiment adopts a touch screen visual operation mode. Both the weather station and the camera are connected to the main control module, and send the collected information to the main control module in real time; the GPRS module is connected to the main control module through a serial interface (or directly integrated in the main control module), and the main control module is The module can send the meteorological information outside the greenhouse and the location information of the heat preservation quilt to the operator in the form of MMS (text and image), so that the operator can understand the site situation in real time and realize the remote monitoring of the roller shutter motor. The main control module is connected with the motor of the roller shutter machine through the extended control board, and controls the startup and shutdown of the motor of the roller shutter machine; the limit switch is connected with the main control module through the extended control board, and is used to send an in-position signal to the main control module.

The specific installation of each component in the system is shown in FIG. 2 , wherein the main control module is located in the control room, and the control room is set near the greenhouse 1 . The weather station 3 is installed on the top of the greenhouse 1 to ensure that the weather station 3 has no shelter and is installed firmly. The main control module is connected with the weather station 3 through the RS485 interface; the weather station 3 collects weather information such as ambient temperature, humidity, wind speed and wind direction outside the greenhouse in real time; and then sends the collected weather information to the main controller through RS485 serial communication module.

The camera 6 is installed on the top of the control room through a fixed pan-tilt, which is controlled by the main control module and can realize the adjustment of the angle of the camera 6 so that the camera 6 is aimed at the corresponding target to collect images or videos. The main control module is connected with the camera 6 through the video capture card, and obtains the image or video information collected by the camera 6 . The camera 6 described in this embodiment has the following functions: (1) Monitoring the safety of the greenhouse. At this time, the camera 6 monitors the entire greenhouse, and transmits the collected images or videos to the main control module in real time for observation by the operators in the control room. Prevent illegal personnel from entering or stealing, etc. (2) Collect sky images and send them to the main control module for intelligent judgment of rainy and snowy weather. (3) Take a side image of the greenhouse to determine the position of the insulation quilt. In order to ensure that the information collected by the camera 6 is reliable and accurate, the installation height of the camera 6 should be suitable without occlusion; The optimal angle and control parameters are saved to the main control module for fast and accurate control.

The motor 4 of the roller shutter machine is fixedly installed through the swing rod 5, specifically: the swing rod 5 is telescopic, and it is located on the side of the greenhouse 1, and the bottom of the swing rod 5 is hinged with the support fixed on the ground, so that the swing rod 5 Can swing along the front and back directions of the greenhouse 1 . The roller blind machine motor 4 is fixedly connected to the top of the swing rod 5 through the support frame, and the output shaft of the roller blind machine motor 4 is connected with the reel laid on the outer heat preservation quilt 2 of the greenhouse 1 to drive the heat preservation quilt 2 to be rolled up or laid. .

On the greenhouse 1, a limit switch is respectively set at the fully laid position (at A in FIG. 2 ) and the fully retracted position (at B in FIG. 2 ) of the insulation quilt 2 . When the insulation is rolled up or laid by 2 and touches the limit switch, the limit switch sends a signal in place to the main control module, and the main control module closes the roller shutter motor 4 after receiving the signal in place.

The working principle of the intelligent roller shutter system is:

Under normal circumstances, the camera 6 monitors the entire greenhouse 1, monitors the safety of the greenhouse, and transmits the collected video and image information to the main control module in real time. The weather station 6 collects weather information such as ambient temperature, humidity, light, wind speed and wind direction outside the greenhouse 1 in real time, and sends the collected weather information to the main control module. Based on the weather information received by the main control module, the operator in the control room decides where and how long the heat preservation 2 stays by combining the growth model of the plants in the greenhouse (referring to the light duration required by the plants in the current growth state, etc.). After the decision is made, the set position of the thermal insulation quilt and the duration at the position are pre-stored in the main control module. Then the main control module controls the fixed pan-tilt to aim the camera 6 at the side where the roller blind machine motor 4 is installed on the heat preservation quilt, and starts the roller blind machine motor to drive the heat preservation quilt 2 to lay or roll up.

During the laying or retracting process of the thermal insulation quilt 2, the camera 6 collects side images of the greenhouse in real time, and sends the collected images to the main control module. The main control module performs edge extraction processing on the received image to obtain the side profile ABCD of the greenhouse and the position E of the insulation quilt, as shown in Figure 5. The length parameters of AB, BC, CD, and DA have been measured in advance and pre-stored in the main control module. The main control module obtains the position of the projection point E' of the position E of the thermal insulation layer on the line segment CD through image segmentation; and then obtains the position of the line segment DE length, then the position of point E on the arc AB can be obtained, that is, the precise position of the heat preservation quilt at this time. When the main control module judges that the current position of the heat preservation quilt is consistent with the preset position, the motor of the roller shutter machine is turned off. In order to improve the precision of image processing, black paint is applied to the edge of the insulation quilt.

When the insulation quilt is being rolled up or laid, due to overloading (the common situation is that the snow on the insulation quilt is not cleared in time after snowing in winter or the insulation is soaked by rain in summer to make it overweight) or mechanical failure, etc. The reason is that the heat preservation is stagnant, and the motor of the roller blind machine has been blocked, which will cause the roller blind machine to overheat and burn out. When this solution is adopted, since the camera can capture the action process of the thermal insulation quilt in real time, the operators in the control room can make judgments and deal with the fault in time.

The main control module pre-stores a rain and snow weather image knowledge base, and the rain and snow weather image knowledge base refers to an image knowledge base formed after training and classification by extracting common rain and snow weather image features. In this embodiment, the common rain and snow weather is divided into light rain, moderate rain, heavy rain and snow. range of ambient temperature and humidity,

When the main control module preliminarily judges that there will be rainy and snowy weather based on the ambient temperature, humidity and light sent by the weather station, if the ambient temperature and humidity sent by the weather station are within the range of ambient temperature and humidity corresponding to the rainy and snowy weather, start the smart weather Judgment mode:

(11) The main control module adjusts the angle of the camera by fixing the gimbal so that it is aligned with the sky outside the studio;

(12) The camera collects sky images at a set frequency, and sends the collected sky images to the main control module;

(13) The main control module extracts the image features of the received sky image, and compares the extracted image features with the image features of different categories of rain and snow weather in the rain and snow weather image knowledge base:

If the image feature is the same as the image feature of a type of rain and snow weather pre-stored in the main control module, for example, the image feature is the same as the image feature of "moderate rain" pre-stored in the main control module, then the main control module will confirm that "moderate rain" will appear. "rain" weather, and then enter step (14); if the image features are different from those of all types of rain and snow weather, it is judged that there will be no rain and snow weather, and return to step (12), until the main control module receives the The ambient temperature and humidity sent by the weather station are not within the range of ambient temperature and humidity corresponding to all classifications.

(14) The main control module sends the judgment result to the operator through the GPRS module.

Example 2:

In order to make the fault diagnosis process intelligent, the system can still complete the fault diagnosis when the operator is not in the control room; and ensure that the camera can continue to monitor the safety of the greenhouse or collect sky images during the operation of the insulation quilt. In this embodiment, an angle sensor 7 is added to the system described in Embodiment 1, and the angle sensor 7 is used for precise positioning of the heat preservation quilt and intelligent fault diagnosis for the shutter machine. The angle sensor communicates with the main control module through RS485 serial mode, and the electrical connection is shown in Figure 1.

The angle sensor 7 is installed at the bottom of the swing rod. In order to ensure that the measurement result of the angle sensor 7 is accurate and not affected by the swing of the swing rod 5, the installation method shown in FIG. 4 is adopted for the angle sensor in this embodiment. The installation structure of the angle sensor 7 includes a connecting rod A8, a connecting rod B9, a central shaft 10, a coupling and two bearings. One end of the connecting rod A8 is connected with the chute, and the other end is processed with an axial chute; the top of the connecting rod B9 is located in the chute, and can move axially in the chute; the bottom of the connecting rod B9 is fixed to the central shaft 10 . The central shaft 10 is coaxial with the hinge shaft of the swing rod, and the angle sensor 7 is fixedly connected to the end of the central shaft 10 close to the swing rod 5 through a coupling. Bearings are respectively installed at the positions where the central shaft 10 is located on the left and right sides of the connecting rod B9. After the installation of the angle sensor 7 is completed, the readings of the angle sensor 7 when the pendulum 5 is at the initial position and the end position are calibrated, and stored in the main control module; wherein the initial position refers to the position of the pendulum 5 when the insulation quilt 2 is fully laid, and the end position refers to The position of the fork 5 when the heat preservation was rolled up completely by 2. OA in FIG. 2 represents the initial position of the swing rod 5 , and OB represents the end position of the swing rod 5 .

The angle sensor 7 collects the angle information between the pendulum and the ground in real time, and sends the collected angle information to the main control module, through which the precise positioning of the heat preservation quilt and the intelligent protection of the roller blind machine are realized. The principle that the angle sensor 7 accurately positions the heat preservation quilt 2 is: the readings of the angle sensor 7 when the pendulum 5 is at the initial position and the end position are preset in the main control module. Before the heat preservation quilt 2 is laid or retracted, the operator pre-stores the readings of the angle sensor when the heat preservation quilt is at the set position in the main control module. When the insulation is rolled up or laid, the angle sensor 7 collects the angle information between the pendulum 5 and the ground in real time, and sends the collected angle information to the main control module, and the main control module combines the received angle information with its internal preset insulation The readings of the angle sensor are compared when the quilt is at the set position, and when the two are consistent, the main control module turns off the motor of the roller blind machine, thereby precisely controlling the position of the heat preservation quilt.

The flow of intelligent fault diagnosis through the angle sensor 7 is shown in FIG. 6 . During the rolling or laying process of the insulation quilt, the angle sensor measures the angle information between the swing rod and the ground in real time, and sends the measured angle information to the main control module, which compares the angle information received this time with the previous one. Compared with the angle information received next time, it is judged whether the angle information of two adjacent times has changed. If the angle information changes twice, it means that the insulation quilt is being rolled up or laid, and the shutter machine is working normally; if the angle information has not changed within the set time (in this embodiment, the set time is 3 minutes) , indicating that the position of the insulation quilt has not changed during this period of time. The main control module first judges whether the current position is the preset position of the system. It is considered that the motor of the roller blind machine has failed, and the main control module actively disconnects the power supply of the motor of the roller blind machine, and sends a text message to the operator through the GPRS module to alarm, thereby effectively preventing the motor of the roller blind machine from burning out due to long-term blocking.

Example 3:

Precise positioning of the heat preservation quilt and intelligent fault diagnosis of the shutter machine through the rope displacement sensor. In the system described in Embodiment 1, a stay rope displacement sensor is added. The rope displacement sensor is fixed at point A in Fig. 2, the rope end of the rope displacement sensor is fixed on the motor of the shutter machine, and the information output terminal communicates with the main control module through RS485 serial mode.

The principle of precise positioning of the thermal insulation quilt by the drawstring displacement sensor is: after the operator makes a decision to roll up or lay the thermal insulation quilt, he presets the position where the thermal insulation quilt needs to be laid in the main control module. In the process of rolling up or laying the heat preservation quilt, the roller shutter machine and the heat preservation quilt move together, which will drive the stretching movement of the pull rope displacement sensor; the pull rope displacement sensor sends the linear distance between the heat preservation quilt and point A to the main control module Signal, through the measurement signal, the main control module can obtain the precise position of the heat preservation quilt; when the heat preservation quilt reaches the preset position, the main control module closes the roller shutter machine.

The process of intelligent fault diagnosis through the rope displacement sensor is as follows: in the process of rolling up or laying the heat preservation quilt of the roller blind machine, the rope displacement sensor measures the linear distance between the heat preservation quilt and point A in real time, and sends the measured displacement signal Send to the main control module, the main control module compares the displacement signal received this time with the displacement signal received last time, and judges whether two adjacent displacement signals have changed. If the two displacement signals change, it indicates that the insulation quilt is being rolled up or laid, and the shutter machine is working normally; if the displacement signal has not changed within the set time (in this embodiment, the set time is 3 minutes) , indicating that the position of the insulation quilt has not changed during this period of time. The main control module first judges whether the current position is the preset position of the system. Then it is considered that the motor of the shutter machine has failed, and the main control module actively disconnects the power supply of the motor of the shutter machine, and sends a text message to the on-duty staff through the GPRS module to alarm, thereby effectively preventing the shutter machine from burning out due to long-term blocking.

In the above-mentioned Embodiment 2 and Embodiment 3, when the angle sensor 7 (or the rope displacement sensor) is output by serial communication, it can be directly connected to the main control module. When the angle sensor 7 (or the rope displacement sensor) outputs signals in the form of resistance and current, the output signal needs to be sampled through the sampling circuit on the expansion control board. That is, at this time, the angle sensor 7 (or the rope displacement sensor) is connected to the main control module through the expansion control board. The angle sensor 7 (or pull rope displacement sensor) is installed far away from the control room. In the resistance mode, in order to ensure the acquisition accuracy, a precise current source scheme is adopted, that is, the current source is connected to the angle sensor (or pull The rope displacement sensor) is connected, and the measurement accuracy of the angle sensor 7 (or the rope displacement sensor) can be guaranteed by adopting this scheme.

To sum up, the above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (7)

1. An intelligent roller shutter system based on image processing technology, including: a main control module, a weather station, a GPRS module, a swing rod and a roller shutter motor; the peripheral equipment is a greenhouse; the main control module is located in the control room; the weather station Installed on the top of the greenhouse, the weather station collects weather information outside the greenhouse in real time, and then sends the collected weather information to the main control module; the weather information includes ambient temperature, humidity, light, wind speed and wind direction; The swing rod is telescopic, and its bottom is hinged with a fixedly installed support, and the swing rod can swing around the hinge point; the motor of the roller blind machine is installed on the top of the swing rod, and the output shaft of the motor of the roller blind machine is connected with the The reels of the external thermal insulation quilt are connected to drive the rolling or laying of the thermal insulation quilt; the GPRS module is used to send the weather information outside the greenhouse and the location information of the thermal insulation quilt to the operator in the form of MMS, and accept the control instructions of the operator. Remote monitoring of roller blinds; It is characterized in that it also includes a camera; the camera is installed on the top of the control room through a fixed platform, and the fixed platform adjusts the angle of the camera under the control of the main control module; the main control module is connected with the camera through a video capture card to obtain Image information collected by the camera; The camera has three working modes. In the first working mode, the camera is aimed at the entire greenhouse to monitor the safety of the greenhouse; in the second working mode, the camera is aimed at the sky to collect sky images; in the third working mode, the camera is aimed at The thermal insulation is installed on the side of the shutter machine motor, and the side image of the greenhouse is collected; In the main control module, there is a rain and snow weather image knowledge base pre-stored, and the rain and snow weather image knowledge base refers to images formed by extracting image features of common rain and snow weather and classifying rain and snow weather according to the extracted image features knowledge base; at the same time, the range of ambient temperature and humidity corresponding to each classification result is pre-stored in the main control module; When the main control module preliminarily judges that there will be rainy and snowy weather according to the ambient temperature, humidity and light sent by the weather station; start the intelligent weather judgment mode: the main control module controls the camera to enter working mode two; the camera collects sky images at a set frequency, and Send the collected sky image to the main control module; the main control module extracts the image features of the received sky image, and compares the extracted image features with the image features of different types of rain and snow weather in the rain and snow weather image knowledge base ; If the image feature is identical with one of the image features, the main control module determines that the rain and snow weather of this category will occur, and the judgment result is sent to the operator through the GPRS module; if the image feature is consistent with all categories in the rain and snow weather image knowledge base If the image features of different images are different, the main control module reacquires the sky image until the received ambient temperature and humidity are not within the range of ambient temperature and humidity corresponding to all classifications; The main control module pre-stores the lengths of the four sides of the side profile of the side of the greenhouse where the roller shutter motor is installed; It exists in the main control module; the main control module first controls the camera to enter working mode three, and then starts the roller shutter machine to drive the insulation to be laid or rolled up; The side image is subjected to edge extraction processing, and then the side profile of the processed greenhouse is sent to the main control module; the main control module determines the current position of the heat preservation quilt according to the side image; when the current position of the heat preservation quilt is consistent with the preset position , turn off the roller shutter motor; if the position of the heat preservation quilt does not change within the set time from the side image, the main control module enters the fault diagnosis mode: in the fault diagnosis mode, the main control module first judges whether the current position is the system preset position, if yes, then the main control module closes the roller shutter motor; if not, then it is considered that the roller shutter motor has broken down, and the main control module actively disconnects the power supply of the roller shutter motor, and reports to the operator through the GPRS module The staff sent a text message to the police. 2. The intelligent roller shutter system based on image processing technology as claimed in claim 1, characterized in that black paint is applied to the edge of the heat preservation side where the motor of the roller shutter is installed. 3. The intelligent roller shutter system based on image processing technology according to claim 1, wherein the main control module pre-stores the rotation angles required by the camera to fix the pan-tilt in three working modes. 4. The intelligent roller shutter system based on image processing technology according to claim 1, further comprising an angle sensor, the angle sensor is installed at the bottom of the swing rod and moves together with the swing rod; The main control module is preset with the readings of the angle sensor when the pendulum is at the initial position and the end position. The main control module controls the angle sensor when the heat preservation is rolled up or laid in the main control module. readings; during the insulation is rolled up or laid, the angle sensor collects the angle information between the pendulum and the ground in real time, and sends the collected angle information to the main control module, and the main control module combines the received angle information with its internal The preset heat preservation is compared with the readings of the angle sensor at the set position, and when the two are consistent, the main control module turns off the roller shutter motor; After the main control module receives the angle information sent by the angle sensor each time, it compares the angle information received at present with the angle information received at the previous time, and judges whether two adjacent angle information changes; If the secondary angle information changes, it is considered that the motor of the roller blind machine is working normally; if the angle information does not change within the set time, enter the fault diagnosis mode. 5. The intelligent roller shutter system based on image processing technology as claimed in claim 4, wherein the angle sensor is mounted on the swing rod by a positioning mechanism; the positioning mechanism comprises: connecting rod A, connecting rod B, central shaft, coupling and two bearings; one end of the connecting rod A is vertically connected with the swing rod, and the other end is processed with an axial chute; the top of the connecting rod B is located in the chute, and can Move axially in the chute; the bottom of the connecting rod B is fixed to the central shaft; the central shaft is coaxial with the hinge shaft of the swing rod, and the angle sensor is fixed on the end of the central shaft close to the swing rod through a coupling Ends. 6. The intelligent roller blind machine system based on image processing technology as claimed in claim 1, further comprising a stay rope displacement sensor; the stay rope displacement sensor is fixed at the position when the heat preservation is fully laid or fully retracted ; The rope end of the rope displacement sensor is fixedly connected to the motor of the shutter machine; During the process that the main control module controls the heat preservation being rolled up or laid, the motor of the roller shutter machine and the heat preservation quilt move together, which drives the stretching movement of the pull rope displacement sensor; Displacement signal, the main control module judges the position of the insulation quilt according to the displacement signal; After the main control module receives the displacement signal sent by the stay rope displacement sensor each time, it compares the displacement signal received at present with the displacement signal received at the previous time, and judges whether two adjacent displacement signals have changed; If the two displacement signals have changed, it is considered that the motor of the shutter machine is working normally; if the displacement signal does not change within the set time, it will enter the fault diagnosis mode. 7. The intelligent rolling machine system based on image processing technology as claimed in claim 1, 4 or 6, characterized in that, on the greenhouse, a limit position is set at the position where the insulation is fully laid and fully retracted. switch, when the heat preservation is in contact with the limit switch, it sends a signal that the heat preservation is in place to the main control module, and after receiving the signal that the heat preservation is in place, the main control module closes the roller shutter motor.