Remote intelligent operation and maintenance system for pollution source waste gas

Abstract

The invention relates to a pollution source waste gas remote intelligent operation and maintenance system, and belongs to the technical field of intelligent operation and maintenance. The remote intelligent operation and maintenance system comprises an intelligent operation and maintenance platform, a data acquisition and transmission module, an online monitoring instrument and a remote monitoring module, the online monitoring instrument is provided with a protocol interface conversion module which is connected with the data acquisition and transmission module, and the protocol interface conversion module adopts a cracking mode based on a matrix keyboard protocol interface. A plurality of channels are arranged for a matrix keyboard of the online monitoring instrument, a plurality of analog switching values are formed to respectively correspond to a plurality of functional keys of the matrix keyboard, remote reverse control over the online monitoring instrument on an operation and maintenance platform is achieved, and operation and maintenance work such as routing inspection and calibration of the online monitoring instrument is completed. According to the design, the protocol interface conversion module is configured for the on-site online monitoring instrument, remote control operation of the on-line monitoring instrument is achieved, and remote operation and maintenance work of the on-line monitoring instrument can be accurately completed without on-site operation of operation and maintenance personnel.

Description

Technical Field

[0001] The present invention relates to the field of intelligent operation and maintenance technology for environmental protection, and specifically to a remote intelligent operation and maintenance system for waste gas from pollution sources, which is used to realize remote monitoring, data collection, fault diagnosis, automatic control and data analysis of pollution source equipment, so as to improve operation and maintenance efficiency, reduce operation and maintenance costs, and effectively protect the environment. Background Art

[0002] As global environmental problems become increasingly severe, effective management and control of waste gas operation and maintenance at pollution sources has become a key link in environmental protection. Traditional operation and maintenance only transmits the data information of online monitoring instruments to the monitoring platform through the data acquisition and transmission module. The maintenance and operation of online monitoring instruments, parameter settings, instrument calibration, and the opening of each standard gas cylinder for calibration still require manual on-site operation, resulting in low work efficiency and high personnel operation and maintenance costs. In actual applications, since each remote monitoring system uses a variety of online monitoring instruments and equipment, and equipment of different types, models, and manufacturers often use a variety of control interface protocols, which are difficult to unify, the existing intelligent operation and maintenance system can only transmit the collected online instrument monitoring data information to the operation and maintenance platform, and cannot remotely operate online equipment from the operation and maintenance platform. There are many online devices corresponding to the operation and maintenance company, and the operation input ports used by each online equipment manufacturer are different. It is difficult to achieve unified remote control of the overall operation and maintenance of waste gas from pollution sources, and there is still a technical gap for the time being. Summary of the invention

[0003] In order to solve the problems in the prior art, the patent of this invention designs a remote intelligent operation and maintenance system for waste gas from pollution sources, so as to solve the problems that the equipment control interface protocols of many online monitoring instrument manufacturers are inconsistent, unified remote control cannot be achieved, and the cylinders of on-site standard gas cannot be opened remotely, as well as the problem that remote intelligent operation and maintenance cannot be performed in the existing operation and maintenance of waste gas from pollution sources.

[0004] The technical solution adopted by the present invention is: the remote intelligent operation and maintenance system includes an intelligent operation and maintenance platform, a data acquisition and transmission module, an online monitoring instrument and a remote monitoring module. The data acquisition and transmission module uploads the data of the online monitoring instrument and the remote video monitoring module to the intelligent operation and maintenance platform, and transmits the operation instructions of the intelligent operation and maintenance platform at the same time. The online monitoring instrument is provided with a protocol interface conversion module connected with the data acquisition and transmission module. The protocol interface conversion module adopts cracking based on a matrix keyboard protocol interface, a USB interface protocol cracking based on a HID protocol, and a PS2 interface protocol cracking to realize a unified communication protocol on the intelligent operation and maintenance platform. Remotely reverse control all online monitoring instruments configured with different protocol interfaces to complete the inspection, calibration and other operation and maintenance work of the online monitoring instruments. The remote video monitoring module performs real-time video monitoring of the operating status of the online monitoring instruments and provides feedback to the intelligent operation and maintenance platform through the data acquisition and transmission module. The crack based on the matrix keyboard protocol interface is to connect the protocol interface conversion module between the matrix keyboard and the online monitoring instrument, and use the multiple analog channels of the protocol interface conversion module to combine them in pairs to form multiple analog switch quantities that correspond one by one to the multiple function keys of the matrix keyboard of the online monitoring instrument, thereby realizing remote control of the key operation of the online monitoring instrument.

[0005] Furthermore, the protocol interface conversion module adopts a cracking method based on the matrix keyboard protocol interface as follows: the protocol interface conversion module sets six channels from Key1 to Key6 corresponding to the 3*3 matrix keyboard of the online monitoring instrument, combines Key1 and Key4 channels into K1 of the matrix keyboard, combines Key1 and Key5 channels into K2, combines Key1 and Key6 channels into K3, combines Key2 and Key4 channels into K4, combines Key2 and Key5 channels into K5, combines Key2 and Key6 channels into K6, combines Key3 and Key4 channels into K7, combines Key3 and Key5 channels into K8, combines Key3 and Key6 channels into K9, K1 to K9 correspond to the 9 function keys of the matrix keyboard that controls the online monitoring instrument. When the remote control protocol interface is converted, the protocol interface conversion module receives the RS485 communication command, controls K to be high level, and switches the relay to the normally open channel Key1 to Key6. Through the aforementioned combination between the Key1 to Key6 channels, the closing of the analog switch is controlled, so that the online monitoring instrument can detect the corresponding key signal and complete the corresponding key operation; when there is no remote control, K is controlled to be low level, and the common terminals IN1-IN6 are connected to the online monitoring instrument and connected to the normally closed terminals OUT1-OUT6, so as to realize the direct connection between the matrix keyboard and the online monitoring instrument, without affecting the normal on-site key operation of the online monitoring instrument.

[0006] Furthermore, the online monitoring instrument is equipped with a standard gas automatic control unit, which includes a gas cylinder assembly, an actuator assembly and a control assembly. The actuator assembly is connected to the pressure reducing valve of the gas cylinder assembly through a fixed bracket, and can adapt to the connection and fixation of pressure reducing valve knobs of different shapes to control the opening and closing of the pressure reducing valve. The control assembly is electrically connected to the drive motor of the actuator assembly to control the operation of the actuator assembly and perform real-time monitoring and feedback on the operating action of the actuator assembly through sensors. The control assembly signal is connected to the data acquisition and transmission module.

[0007] Furthermore, the gas cylinder assembly includes a pressure reducing valve, which is provided with a pressure sensor, and the two ends of the pressure reducing valve are respectively connected to the gas cylinder interface and the gas outlet interface, and the gas outlet interface is respectively connected to the gas pressure detection module of the online monitoring instrument and the control assembly through a three-way joint.

[0008] Furthermore, the actuator assembly includes a fixed bracket, a driving motor, a reduction gear group and a pressure reducing valve knob fixing assembly, the fixed bracket includes a three-layer plate structure connected by a support rod, the pressure reducing valve is fixedly connected to the bottom plate of the fixed bracket, the driving motor and the control assembly are installed on the top plate of the fixed bracket, and the reduction gear group is installed on the middle plate.

[0009] Furthermore, the reduction gear group includes a driving gear, a multi-stage reduction gear and a first driven gear. The output end of the drive motor passes downward through the top plate and is fixedly connected to the driving gear. The driving gear is meshed with the first driven gear through the multi-stage reduction gear. A transmission rod is slidably connected to the axis of the first driven gear and can drive the transmission rod to rotate synchronously. The bottom end of the transmission rod is connected to the pressure reducing valve knob fixing assembly.

[0010] Furthermore, the pressure reducing valve knob fixing assembly includes a clamp-type fixing clamp, which includes a pair of arc-shaped clamp bodies, and the two ends of the two clamp bodies are respectively fixed by bolts. The fixing clamp is fixedly connected to the knob of the pressure reducing valve, and a rotating rod is connected to the upper side of the two clamp bodies. The middle part of the rotating rod is fixedly connected to the bottom end of the transmission rod, and the transmission rod is coaxially arranged with the knob of the pressure reducing valve.

[0011] Furthermore, the control component is provided with an absolute displacement sensor and a travel switch, the reduction gear group also includes a second driven gear, the second driven gear is meshingly connected to the multi-stage reduction gear, a lever is fixedly connected to the axis of the second driven gear, the absolute displacement sensor and the travel switch of the control component are both installed on the lever, the absolute displacement sensor detects the rotation angle of the lever, the travel switch limits the maximum rotation angle of the lever, and controls the drive motor to stop when the lever is triggered, and the rotation angle of the lever corresponds to the rotation angle of the knob of the pressure reducing valve.

[0012] Furthermore, the reduction gear set also includes an emergency rotating rod, the bottom end of which is fixedly connected to a transmission gear, the transmission gear is meshedly connected to a multi-stage reduction gear, and the top of the emergency rotating rod is a hexagonal countersunk hole.

[0013] Compared with the prior art, the remote intelligent operation and maintenance system for waste gas from pollution sources designed by the patented invention has the following advantages: The remote intelligent operation and maintenance system configures a protocol interface conversion module for each online monitoring instrument. It can directly realize remote control of all online monitoring instruments on site through a unified communication method on the intelligent operation and maintenance platform. The inspection, calibration and other operation and maintenance work of the online monitoring instruments can be completed without the need for on-site operation by maintenance personnel, which greatly improves the operating efficiency and convenience of the remote intelligent operation and maintenance system and reduces the workload.

[0014] The protocol interface conversion module adopts three serial port protocol cracking modes including matrix keyboard, USB interface and PS2 interface, which can meet the application requirements of online monitoring instruments of different types, models and manufacturers, and realize remote control of all online monitoring instruments in the remote intelligent operation and maintenance system without affecting the on-site key operation of the online monitoring instruments.

[0015] The remote intelligent operation and maintenance system is equipped with an automatic control unit for the standard gas cylinders used for online monitoring instruments. The opening and closing of the standard gas cylinders are automatically controlled by the automatic control unit. The actuator assembly of the automatic control unit can be directly applied to the existing gas cylinder pressure reducing valve. The connection end between the actuator assembly and the pressure reducing valve can be adjusted to meet the fixing requirements of pressure reducing valve knobs of different shapes. There is no need to replace the pressure reducing valve of the gas cylinder to achieve adaptation and automatic control of the existing pressure reducing valve. It has stronger applicability, reduces the investment in the transformation of existing equipment of the intelligent operation and maintenance system, and has low cost of use.

[0016] The actuator assembly of the gas cylinder automatic control unit is also equipped with a second driven gear. The second driven gear is provided with a lever to cooperate with the absolute displacement sensor and the travel switch of the control assembly to ensure that the movement of the actuator assembly is within the set angle range, thereby realizing accurate control of the opening and closing process of the gas cylinder pressure reducing valve. At the same time, the travel switch can prevent the operation of the actuator assembly from exceeding the necessary range, thereby preventing equipment damage or safety accidents. At the same time, the actuator assembly is also provided with an emergency lever. When an emergency such as a power outage or power failure occurs, the user can open and close the pressure reducing valve of the gas cylinder through manual emergency operation. This design not only improves the emergency response capability of the system, but also ensures that the gas supply can be quickly cut off in an emergency to prevent the situation from further deteriorating. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the architecture of the remote intelligent operation and maintenance system for waste gas from pollution sources.

[0018] Figure 2 It is a schematic diagram of the reverse control of the online monitoring instrument by the remote intelligent operation and maintenance system of the exhaust gas from the pollution source.

[0019] Figure 3 It is a schematic diagram of the protocol interface conversion module cracking the matrix keyboard protocol interface.

[0020] Figure 4 and Figure 5 It is a schematic diagram of the conversion and plug-in interface of the protocol interface conversion module based on the cracking of the matrix keyboard protocol interface.

[0021] Figure 6 It is a schematic diagram of relay control based on the cracking of the matrix keyboard protocol interface by the protocol interface conversion module.

[0022] Figure 7 It is a schematic diagram of simulated keystrokes cracked by the protocol interface conversion module based on the matrix keyboard protocol interface.

[0023] Figure 8 It is a schematic diagram of a standard gas automatic control unit.

[0024] Fig. 9 It is a schematic diagram of the internal structure of the standard gas automatic control unit.

[0025] Fig.10 It is a front view structural schematic diagram of the reduction gear set.

[0026] In the figure, 1 is a fixed bracket, 2 is an actuator assembly, 21 is a driving motor, 22 is an emergency rotating rod, 23 is a first driven gear, 24 is a lever, 25 is a second driven gear, 26 is a transmission rod, 27 is an emergency hole, 3 is a control module, 31 is a pressure detection module, 32 is an absolute displacement sensor, 33 is a travel switch, 34 is a gas interface, 4 is a pressure reducing valve, 42 is a gas cylinder interface, 41 is an air outlet interface, 43 is a feedback gas path, 44 is a pressure reducing valve knob, 51 is a rotating rod, and 52 is a fixed clamp. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. The technical solutions in the embodiments of the present invention are clearly and completely described, and the described embodiments are only embodiments of a part of the present invention, not all of them. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figure 1 , 2As shown, the patent of the present invention designs an embodiment of a remote intelligent operation and maintenance system for waste gas from pollution sources. In this embodiment, the remote intelligent operation and maintenance system includes an intelligent operation and maintenance platform, a data acquisition and transmission module, a number of online monitoring instruments and a remote monitoring module. The intelligent operation and maintenance platform is used to monitor the status of pollution sources in real time, receive alarm information, analyze historical data, and perform fault diagnosis and remote operation. The data acquisition and transmission module is composed of a number of data acquisition instruments. The RS485 communication method is used to upload the data of the online monitoring instruments and the remote video monitoring module to the intelligent operation and maintenance platform, and at the same time, the operation instructions of the intelligent operation and maintenance platform are transmitted downstream. The online monitoring instruments include a variety of online monitoring instruments for the detection of waste gas, VOC, etc. Each online monitoring instrument is equipped with a protocol interface conversion module connected to the data acquisition and transmission module. The remote video monitoring module performs real-time video monitoring of the operating status of all online monitoring instruments and the conditions of each monitoring point.

[0029] The conversion methods adopted by the protocol interface conversion module include cracking based on the matrix keyboard protocol interface, cracking based on the USB interface protocol of the HID protocol, and cracking based on the PS2 interface protocol. The USB interface protocol cracking based on the HID protocol and the PS2 interface protocol cracking can adopt existing technologies. The protocol interface conversion module based on the cracking of the matrix keyboard protocol interface is connected between the online monitoring instrument and its matrix keyboard. The protocol interface conversion module sets multiple analog channels for different forms of matrix keyboards, and combines the channels in pairs to form multiple analog switch quantities that correspond to multiple function buttons on the online monitoring instrument one by one, so as to realize remote control of all online monitoring instruments configured with different protocol interfaces based on the unified RS485 communication protocol on the operation and maintenance platform, and complete the inspection, calibration and other operation and maintenance work of the online monitoring instruments. Specifically, combined with Figure 3 , 4As shown in , 5, 6, and 7, taking the 3*3 9-key matrix keyboard used in the online monitoring instrument as an example, the protocol interface conversion module sets six channels from Key1 to Key6, combining Key1 and Key4 into K1, combining Key1 and Key5 into K2, combining Key1 and Key6 into K3, combining Key2 and Key4 into K4, combining Key2 and Key5 into K5, combining Key2 and Key6 into K6, combining Key3 and Key4 into K7, combining Key3 and Key5 into K8, and combining Key3 and Key6 into K9. K1 to K9 correspond to the control of the online The 9 operation buttons of the matrix keyboard of the monitoring instrument, when the online monitoring instrument needs to be remotely controlled, the intelligent operation and maintenance platform sends a control command, the protocol interface conversion module receives the transmitted RS485 communication command, controls K to a high level, and switches the relay to the normally open channel Key1 to Key6. Through the mutual combination of Key1 to Key6, the closing of the analog switch is controlled, so that the instrument can detect the corresponding key signal and remotely control the corresponding key operation; when there is no remote control, control K to a low level, the common terminal IN1-IN6 is connected to the instrument, and is connected to the normally closed terminal OUT1-OUT6, which does not affect the normal operation of the instrument.

[0030] When the keyboard is remotely controlled, a command is issued from the smart operation platform, transmitted through the data acquisition transmission module, and the data acquisition instrument transmits the command to the protocol interface conversion module. By controlling K to a high level, the three relays U1, U2, and U3 are started, and the normally closed end is disconnected from the common end IN1-OUT1, IN2-OUT2, IN3--OUT3, IN4-OUT4, IN5-OUT5, and IN6-OUT6, and switched to the normally open end IN1-KEY1, IN2-KEY2, IN3-KEY3, IN4-KEY4, IN5-KEY5, and IN6-KEY6 to close, thereby activating the analog keys corresponding to K1-K9, and remotely controlling the function keys on the matrix keyboard to achieve the purpose of remote control. For example, when the K1 key is remotely controlled, after the protocol interface conversion module receives the platform control signal forwarded by the data acquisition instrument, it sets K to a high level, the U1-U3 relays switch to the normally open channel, and ENB11 is set to a high level to connect key1 and key4, and then connect in1 and in4, so that K1 simulates the pressed state.

[0031] When the remote control of the keyboard ends, by controlling K to a low level, the normally open end is disconnected from the common end, the normally closed end common end is closed, and the matrix keyboard returns to the normal use state. For example, when the K1 button is pressed on site, K is set to a low level, and the U1, U2, and U3 relays are switched to the normally closed channel. When K1 is pressed, OUT1 and OUT4 are connected, and then IN1 and IN4 are connected, and the online device is restored to the physical matrix keyboard control state. This solution is not limited to 3*3 matrix keyboards, and other forms of matrix keyboards can be adjusted accordingly based on the above principle.

[0032] The online monitoring instrument is also equipped with a standard gas automatic control unit for automatically controlling the gas cylinders that provide standard gas, such as Figure 8 , 9 As shown in Figure 10, the standard gas automatic control unit includes a gas cylinder assembly, an actuator assembly 2, a control assembly 3 and an emergency turning rod 22, and is covered with a metal shell on the outside. The actuator assembly 2 is connected to the pressure reducing valve 4 of the gas cylinder assembly through a fixed bracket 1 to control the opening and closing of the pressure reducing valve. The control assembly 3 is electrically connected to the drive motor 21 of the actuator assembly to control the operation of the actuator assembly 3, and the operating action of the actuator assembly 3 is monitored and fed back in real time through sensors, and the drive motor 21 is interlocked and controlled by a logic controller. The control assembly 3 signal is connected to the data acquisition and transmission module, and the operating status of the standard gas automatic control unit can be viewed in real time through the intelligent operation and maintenance platform, and control instructions can be sent to it.

[0033] The specific structure of the standard gas automatic control unit is: The gas cylinder assembly includes a pressure reducing valve 4, which has a gas cylinder interface 42 and a gas outlet interface 41 at both ends, wherein a three-way joint is provided at the gas outlet interface 41 to connect a feedback gas circuit 43, which are respectively connected to the gas pressure detection module 31 of the online monitoring instrument and the control assembly 3 by pipelines.

[0034] The actuator assembly 2 includes a driving motor 21, a reduction gear set and a pressure reducing valve knob fixing assembly. The fixed bracket 1 includes a three-layer plate structure connected by a metal support rod. The bottom of the pressure reducing valve 4 is fixedly connected to the bottom plate of the fixed bracket 1 by screws. The driving motor 21 and the control assembly 3 are installed on the top plate of the fixed bracket 1, and the reduction gear set is installed on the middle plate. The reduction gear set includes a driving gear, a multi-stage reduction gear, a first driven gear 23 and a second driven gear 25. The output end of the driving motor 21 passes downward through the top plate of the fixed bracket 1 and is fixedly connected to the driving gear. The driving gear is meshed and connected with the first driven gear 23 and the second driven gear 25 respectively through the multi-stage reduction gear. The first driven gear 23 is arranged in the middle of the middle plate, and a transmission rod 26 is slidably connected at its axis, and can drive the transmission rod 26 to rotate synchronously. The upper and lower ends of the transmission rod 26 pass through the top and middle plates of the fixed bracket 1 respectively, and can move up and down. The bottom end is connected to the pressure reducing valve knob fixing assembly. The second driven gear 25 is arranged at one end of the middle plate body of the fixed bracket 1 , and a lever 24 is fixedly connected to the axis thereof. The lever 24 passes upward through the top plate body and extends into the control component 3 .

[0035] The pressure reducing valve knob fixing assembly includes a clamp-type fixing clamp 52, which includes a pair of arc-shaped clamp bodies, and bolt connection holes are respectively opened at both ends of the clamp bodies. The two clamp bodies are fixed by bolt connection. The fixing clamp 52 is fixedly connected to the pressure reducing valve knob 44 and is tightened and positioned by bolts. The upper sides of the two clamp bodies are slidably connected with a rotating rod 51, and the two ends of the rotating rod 51 are respectively positioned with the two clamp bodies by screws. The middle part of the rotating rod 51 is fixedly connected to the bottom end of the transmission rod 26, and the transmission rod 26 is coaxially arranged with the pressure reducing valve knob 44. The rotation of the transmission rod 26 can drive the rotating rod 51 to rotate synchronously, thereby driving the pressure reducing valve knob 44 to rotate synchronously through the fixing clamp 52.

[0036] The control assembly 3 is provided with a gas pressure detection module 31, an absolute displacement sensor 32 and a travel switch 33. The gas pressure detection module 31 is provided with a gas interface 34 connected to the feedback gas circuit 43 of the pressure reducing valve 4, so as to detect the outlet pressure of the pressure reducing valve 4 in real time. The absolute displacement sensor 32 and the travel switch 33 are both installed at the lever 24. The absolute displacement sensor 32 detects the rotation angle of the lever 24, and the travel switch 33 limits the maximum rotation position of the lever 24. When the lever 24 is triggered, the interlock control driving motor 21 is stopped. The rotation angle of the lever 24 corresponds to the rotation angle of the pressure reducing valve knob 44.

[0037] The bottom end of the emergency rotating rod 22 is fixedly connected with a transmission gear, which meshes with the multi-stage reduction gear of the actuator assembly 2. The top of the emergency rotating rod 22 is a hexagonal countersunk hole. An emergency hole 27 is opened on the top of the metal shell of the standard gas automatic control unit. The position of the emergency hole 27 corresponds to the emergency rotating rod 22. In the case of power failure, a hexagonal wrench can be inserted into the hexagonal countersunk hole on the top of the emergency rotating rod 22 through the emergency hole 27 on the upper part of the shell. The emergency rotating rod 22 is rotated to drive the multi-stage reduction gear to rotate, thereby driving the first driven gear 23 and the transmission rod 26 to rotate, and then opening or closing the pressure reducing valve 4. It ensures that the pressure reducing valve 4 can still be operated safely and reliably in emergency situations such as power failure.

[0038] When the remote intelligent operation and maintenance system for waste gas from pollution sources disclosed in the patent of this invention is applied.

[0039] First, you need to log in to the smart operation and maintenance management system platform with the registered username and password. On the platform, you can edit, fill in and complete the basic information of the enterprise and monitoring sites, and view and inspect the basic information of the online sites. The smart operation and maintenance platform is equipped with an alarm system unit, through which you can view the alarm information generated by various monitoring points such as exhaust gas sites, including alarm period, alarm type, alarm details and other information, and preliminarily screen the situation of sites where online monitoring instruments are not operating normally.

[0040] Click to enter the corresponding site, and you can view and inspect the real-time status, real-time parameters, historical status, and historical data of the site. Through the dynamic reverse control unit, you can directly remotely operate and calibrate the corresponding online monitoring instruments, view and review the records and results of dynamic reverse control, and view and inspect the overall information of the equipment status in the site.

[0041] Based on the above warning information, site information, equipment parameters, etc., the details of the operation and maintenance site are obtained after preliminary analysis by the intelligent operation and maintenance platform, and daily inspection record sheets, daily calibration record sheets, etc. can be generated with one click.

[0042] The above contents are only preferred embodiments of the present invention and cannot be used to limit the scope of implementation of the present invention. That is, any simple equivalent changes and modifications made according to the claims and description of the present invention are still within the scope of the present invention.

Claims

1. The remote intelligent operation and maintenance system for waste gas from pollution sources is characterized by: The remote intelligent operation and maintenance system includes an intelligent operation and maintenance platform, a data acquisition and transmission module, an online monitoring instrument and a remote monitoring module. The data acquisition and transmission module uploads the data of the online monitoring instrument and the remote video monitoring module to the intelligent operation and maintenance platform, and transmits the operation instructions of the intelligent operation and maintenance platform. The online monitoring instrument is provided with a protocol interface conversion module connected to the data acquisition and transmission module. The protocol interface conversion module adopts a protocol cracking including a matrix keyboard protocol interface cracking, a USB interface protocol cracking based on the HID protocol and a PS2 interface protocol cracking, so as to realize remote control of different configurations based on a unified communication protocol on the intelligent operation and maintenance platform. All online monitoring instruments with protocol interfaces are reversely controlled to complete the inspection and calibration operation and maintenance of the online monitoring instruments. The remote video monitoring module performs real-time video monitoring of the operating status of the online monitoring instruments and provides feedback to the intelligent operation and maintenance platform through the data acquisition and transmission module. The crack based on the matrix keyboard protocol interface is to connect the protocol interface conversion module between the matrix keyboard and the online monitoring instrument, and use the multiple analog channels of the protocol interface conversion module to combine them in pairs to form multiple analog switch quantities that correspond one by one to the multiple function keys of the matrix keyboard of the online monitoring instrument, so as to realize the key operation of remote control of the online monitoring instrument.

2. The remote intelligent operation and maintenance system for waste gas from pollution sources according to claim 1 is characterized in that: The protocol interface conversion module adopts a matrix keyboard protocol interface-based cracking method as follows: the protocol interface conversion module sets six channels from Key1 to Key6 corresponding to the 3*3 matrix keyboard of the online monitoring instrument, combines Key1 and Key4 channels into K1 of the matrix keyboard, combines Key1 and Key5 channels into K2, combines Key1 and Key6 channels into K3, combines Key2 and Key4 channels into K4, combines Key2 and Key5 channels into K5, combines Key2 and Key6 channels into K6, combines Key3 and Key4 channels into K7, combines Key3 and Key5 channels into K8, combines Key3 and Key6 channels into K9, K1 to K9 correspond to the 9 function keys of the matrix keyboard that controls the online monitoring instrument. When the remote control protocol interface is converted, the protocol interface conversion module receives the RS485 communication instruction, controls K to be high level, and switches the relay to the normally open channel Key1 to Key6. Through the aforementioned combination between the Key1 to Key6 channels, the closing of the analog switch is controlled, so that the online monitoring instrument can detect the corresponding key signal and complete the corresponding key operation; when there is no remote control, K is controlled to be low level, and the common terminals IN1-IN6 are connected to the online monitoring instrument and connected to the normally closed terminals OUT1-OUT6, so as to realize the direct connection between the matrix keyboard and the online monitoring instrument, without affecting the normal on-site key operation of the online monitoring instrument.

3. The remote intelligent operation and maintenance system for waste gas from pollution sources according to claim 2 is characterized in that: The online monitoring instrument is equipped with a standard gas automatic control unit, which includes a gas cylinder assembly, an actuator assembly and a control assembly. The actuator assembly is connected to the pressure reducing valve of the gas cylinder assembly through a fixed bracket, and can adapt to the connection and fixation of pressure reducing valve knobs of different shapes to control the opening and closing of the pressure reducing valve. The control assembly is electrically connected to the drive motor of the actuator assembly to control the operation of the actuator assembly and perform real-time monitoring and feedback on the operation of the actuator assembly through sensors. The control assembly signal is connected to the data acquisition and transmission module.

4. The remote intelligent operation and maintenance system for waste gas from pollution sources according to claim 3 is characterized in that: The gas cylinder assembly includes a pressure reducing valve, which is provided with a pressure sensor. Both ends of the pressure reducing valve are respectively connected to a gas cylinder interface and a gas outlet interface, and the gas outlet interface is respectively connected to an online monitoring instrument and a gas pressure detection module of a control assembly through a three-way joint.

5. The remote intelligent operation and maintenance system for waste gas from pollution sources according to claim 4 is characterized in that: The actuator assembly includes a fixed bracket, a driving motor, a reduction gear set and a pressure reducing valve knob fixing assembly. The fixed bracket includes a three-layer plate structure connected by a support rod. The pressure reducing valve is fixedly connected to the bottom plate of the fixed bracket, the driving motor and the control assembly are installed on the top plate of the fixed bracket, and the reduction gear set is rotatably connected to the middle plate.

6. The remote intelligent operation and maintenance system for waste gas from pollution sources according to claim 5 is characterized in that: The reduction gear set includes a driving gear, a multi-stage reduction gear and a first driven gear. The output end of the driving motor passes downward through the top plate and is fixedly connected to the driving gear. The driving gear is meshed with the first driven gear through the multi-stage reduction gear. A transmission rod is slidably connected to the axis of the first driven gear and can drive the transmission rod to rotate synchronously. The bottom end of the transmission rod is connected to the pressure reducing valve knob fixing assembly.

7. The remote intelligent operation and maintenance system for waste gas from pollution sources according to claim 6 is characterized in that: The pressure reducing valve knob fixing assembly includes a clamp-type fixing clamp, which includes a pair of arc-shaped clamp bodies, and the two ends of the two clamp bodies are respectively fixed by bolt connection. The fixing clamp is fixedly connected to the knob of the pressure reducing valve, and a rotating rod is connected to the upper side of the two clamp bodies. The middle part of the rotating rod is fixedly connected to the bottom end of the transmission rod, and the transmission rod is coaxially arranged with the knob of the pressure reducing valve.

8. The remote intelligent operation and maintenance system for waste gas from pollution sources according to claim 7 is characterized in that: The control component is provided with an absolute displacement sensor and a travel switch. The reduction gear group also includes a second driven gear, which is meshed and connected with the multi-stage reduction gear. A lever is fixedly connected to the axis of the second driven gear. The rotation angle of the lever corresponds to the rotation angle of the knob of the pressure reducing valve. The absolute displacement sensor and the travel switch of the control component are both installed on the lever. The absolute displacement sensor detects the rotation angle of the lever, and the travel switch limits the maximum rotation angle of the lever. When the lever is triggered, the drive motor is controlled to stop.

9. The remote intelligent operation and maintenance system for waste gas from pollution sources according to claim 8 is characterized in that: The reduction gear set also includes an emergency rotating rod, the bottom end of which is fixedly connected to a transmission gear, the transmission gear is meshedly connected to a multi-stage reduction gear, and a hexagonal countersunk hole is arranged on the top of the emergency rotating rod.

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