CN111552219A - Monitoring system and method for the whole process of coalbed methane storage and transportation - Google Patents

Abstract

The invention provides a system and method for monitoring the whole process of coalbed methane storage and transportation, belonging to the field of coalbed methane storage and transportation, and aims to provide a system capable of monitoring the whole process of key environmental information, safety status of coalbed methane and logistics information in the process of coalbed methane storage and transportation. system and method. By setting a main control device, a collection device and a remote monitoring device, and setting the main control device to include a power supply unit, an early warning processing unit, a storage unit, an environmental perception unit, a control unit, an interaction unit and a communication unit, the collection device includes an internal temperature and humidity sensor, The internal pressure sensor, the internal methane concentration sensor and the redundant sensor circuit provide a system and method capable of monitoring the whole process of coalbed methane storage and transportation, through which the coalbed methane storage and transportation can be accurately, reliably and safely Intelligent monitoring is carried out throughout the process to ensure the safety of CBM storage and transportation.

Description

Monitoring system and method for the whole process of coalbed methane storage and transportation

technical field

The invention relates to the technical field of coalbed methane storage and transportation, in particular to a whole process monitoring system and method for coalbed methane storage and transportation.

Background technique

Coalbed methane, commonly known as "gas", is a hydrocarbon gas mainly composed of methane. It is mainly adsorbed on the surface of coal matrix particles, and part of it is freed in coal pores or dissolved in coal seams. It is an associated mineral resource of coal and belongs to unconventional natural gas. In the distribution of resources in my country, there is more coal and less oil and less gas. For a long time, my country has a huge demand for natural gas, but it mainly relies on imports. my country is rich in coalbed methane resources, and its reserves are among the top three in the world. The shallow coalbed methane resources buried within 2000m are about 36 trillion cubic meters, and the total recoverable resources are about 10 trillion cubic meters. As a high-quality clean energy, CBM has a calorific value comparison: 1 cubic meter of pure CBM = 1.13KG gasoline = 1.21KG standard coal = 9.5 kWh. The calorific value is equivalent to that of natural gas, it can be mixed with natural gas, and it is relatively clean after combustion. The development and utilization of coalbed methane plays an important role in reducing China's dependence on natural gas, which can effectively reduce my country's natural gas demand and reduce import dependence.

Due to some technical reasons, the mining and utilization of coalbed methane has been facing many difficulties. Among them, storage and transportation monitoring is the monitoring of key environmental parameters, safety status and logistics information of coalbed methane during the storage and transportation of coalbed methane. The main problems of mining and utilization. Because CBM is colorless, odorless, flammable, and explodes in case of an open flame at a certain concentration, and the characteristics of high pressure and low temperature endowed by the CBM storage and transportation process require that the CBM storage and transportation process requires a set of precise, reliable, safe and The whole process monitoring system with high real-time performance ensures the safety of coalbed methane storage and transportation. However, up to now, there is no monitoring system that can be applied to the whole process of CBM storage and transportation.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a system and method capable of monitoring the whole process of coalbed methane storage and transportation.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is:

In a first aspect, a whole-process monitoring system for coalbed methane storage and transportation is provided, which includes a main control device, a collection device and a remote monitoring device, the main control device includes a power supply unit, an early warning processing unit, a storage unit, an environmental perception unit, a control unit, and a control unit. unit, interaction unit and communication unit, the collection device includes an internal temperature and humidity sensor, an internal pressure sensor, an internal methane concentration sensor and a redundant sensor circuit, wherein: the main control device is installed outside the storage and transportation equipment through a connector, and the collection The device is arranged inside the storage and transportation equipment, and the main control device and the collection device are connected through connectors; the power supply unit includes a main power supply, a backup power supply, a power supply conditioning circuit, a power supply switching circuit and a charging circuit; the early warning processing unit includes sound and light. an alarm circuit and a self-test switching circuit, the self-test switching circuit includes a power supply detection circuit, a power supply switching circuit and a redundant sensor circuit; the environment sensing unit includes a four-in-one weather station module of temperature and humidity, atmospheric pressure and light intensity sensors, Gas sensor, triaxial acceleration sensor and GPS positioning module; the control unit includes microprocessor and FPGA control circuit; the communication unit includes 4G module and WiFi module; internal pressure sensor, internal temperature and humidity sensor and internal methane concentration The sensor is connected with the main control device through the connector, and is used to collect the pressure, temperature, humidity and methane concentration of the coalbed methane in the storage and transportation equipment to form the internal coalbed methane data; the connector is connected with the microprocessor of the control unit, and the It is used to send the internal coalbed methane data to the microprocessor or receive the instructions of the microprocessor; the redundant sensor circuit is connected with the FPGA control circuit of the control unit to receive switching control instructions from the control unit; the connector is connected to the power supply unit Connected, the power supply unit is used to supply power to the acquisition device through the connector; the environmental perception unit is connected to the control unit through the interface circuit, and the environmental perception unit is used to connect the four-in-one weather station module, gas sensor, triaxial acceleration sensor and The external environment data formed by the temperature, humidity, atmospheric pressure, light intensity, vibration and positioning data collected by the GPS positioning module are transmitted to the microprocessor, or receive instructions from the microprocessor; the control unit is connected with the communication unit, so The communication unit is wirelessly connected with the remote monitoring device, and the control unit uploads the internal coalbed methane data and external environment data to the remote monitoring device or receives instructions from the remote monitoring device through the communication unit; the power detection circuit of the early warning processing unit is connected to the main power supply. It is connected to the backup power supply to detect the power status of the main power supply and the backup power supply; the power detection circuit is connected to the FPGA control circuit, and is used to transmit the power status of the main power supply and the backup power supply to the control unit in real time. The state selects the power supply mode; the sound and light alarm circuit, the power switching circuit and the redundant sensor circuit in the early warning processing unit are all connected with the FPGA control circuit of the control unit, and are used to perform actions under the control of the FPGA control circuit; the storage unit is connected to the FPGA control circuit. Both the microprocessor of the control unit and the FPGA control circuit are connected for read/write microprocessor The data and instructions received and sent by the controller and the FPGA control circuit; the power supply unit is connected with the control unit, the interaction unit, the environment perception unit, the communication unit, the early warning processing unit and the storage unit, and is used for the control unit, the interaction unit, The environment perception unit, the communication unit, the early warning processing unit and the storage unit are powered.

Optionally, the main control device and the collection device are sequentially covered with a compression layer, a waterproof layer, a heat insulating layer, an electromagnetic shielding layer and an inner protective layer from outside to inside.

Optionally, the control unit further includes a clock circuit, and the clock circuit is connected to both the microprocessor and the FPGA control circuit of the control unit, and is used for obtaining the calendar time for the storage and transportation of the coalbed methane.

Optionally, each type of sensor in the acquisition device includes a primary sensor and a backup sensor, and the primary sensor and the backup sensor are respectively connected to the two input ends of the multiplexer in the redundant sensor circuit, and the multiplexer is multiplexed. The control terminal of the controller is connected to the control port allocated by the FPGA control circuit.

Optionally, the storage unit includes a main storage, a backup storage and a data read/write module, and the main storage and the backup storage are connected with the microprocessor and the FPGA control circuit through the data read/write module; the main storage is an SD card, and the backup storage is It is a Flash card, which is fixed in the main control device and cannot be removed; the SD card is pluggable in the main control device; the main storage and backup storage are used to store internal CBM data, external environmental data and logistics data.

Optionally, the interaction unit includes a manual wake-up circuit, an LCD touch screen and a USB download circuit; the LCD touch screen is connected to the microprocessor, the manual wake-up circuit is connected to the FPGA control circuit, and the USB download circuit is connected to both the microprocessor and the FPGA control circuit. ; The manual wake-up circuit is used to wake up the control unit and the LCD touch screen, and the LCD touch screen is used for display and human-computer interaction; the USB download circuit is used to download data or instructions.

In a second aspect, a method for monitoring the whole process of coalbed methane storage and transportation is provided, and the method for monitoring the whole process of coalbed methane storage and transportation adopts the whole process monitoring system for coalbed methane storage and transportation described in the first aspect, which includes the following steps:

S1, when the FPGA control circuit receives the wake-up signal of the manual wake-up circuit or the wake-up command sent by the remote monitoring device, the power supply unit is powered on and started, and the FPGA control circuit controls the power supply detection circuit to perform self-check on the power supply unit;

S2, when the power detection circuit detects that the voltage of the main power supply is lower than the first preset threshold voltage, the FPGA control circuit controls the sound and light alarm circuit to perform a three-level warning, and at the same time, the FPGA control circuit sends a switching control command to the power switching circuit, and the power The switching circuit controls switching to the standby power supply for power supply; during the process of supplying power from the standby power supply, the power supply detection circuit detects the voltage of the standby power supply in real time, and when the voltage of the standby power supply is greater than the second preset threshold voltage, the FPGA control circuit controls the continuous The standby power supply supplies power to the power modules and chips of the system through the power conditioning circuit, and controls the standby power supply to charge the main power supply through the charging circuit; when the power detection circuit detects that the voltage of the main power supply rises to a voltage higher than the first preset threshold voltage or When the voltage of the backup power supply is lower than the second preset threshold voltage, the FPGA control circuit controls the power supply switching circuit to switch to the main power supply to supply power;

S3, when the voltage of the main power supply is lower than the first preset threshold voltage and the voltage of the backup power supply is lower than the second preset threshold voltage, the FPGA control circuit controls the sound and light alarm circuit to perform a secondary warning.

S4, when the voltage of the main power supply is higher than the first preset threshold voltage or the voltage of the backup power supply is higher than the second preset threshold voltage, the microprocessor tests whether the communication with the remote monitoring device can be established through the communication unit;

S4, after the communication unit establishes communication with the remote monitoring device, the microprocessor sends a self-check instruction to the environmental perception unit, the acquisition device and the storage unit, and determines their respective self-check results according to the response data frames returned by them;

S5, when the microprocessor determines that the environment sensing unit, the acquisition device and the storage unit are all self-checking normal, the microprocessor controls the system to enter the normal working mode, and the internal pressure sensor, internal temperature and humidity sensor and internal methane concentration sensor in the acquisition device are respectively The pressure, temperature, humidity and methane concentration data inside the storage and transportation equipment are collected to form the internal coalbed methane data. The four-in-one weather station module, gas sensor, three-axial acceleration sensor, and GPS positioning module in the environmental perception unit respectively collect the data of the external environment. Temperature, humidity, atmospheric pressure, light intensity, gas composition and concentration, vibration acceleration in all directions and GPS positioning data form external environmental data, and send the internal coalbed methane data and external environmental data to the microprocessor for data analysis and processing, write into a storage unit and sent to a remote monitoring device.

S6, when the establishment of communication between the communication unit and the remote monitoring device fails, or any one of the storage unit, the environmental perception unit or the acquisition device finds a fault in self-check, the FPGA control circuit controls the sound and light alarm circuit to perform a secondary early warning.

Optionally, the method for monitoring the whole process of CBM storage and transportation further includes the following steps:

S7, when the microprocessor determines that the storage and transportation equipment is in the transportation stage after data analysis and processing, and the data collected by all sensors in the acquisition device and the environmental perception unit meet the threshold requirements of the transportation stage, the microprocessor control system keeps working normally Mode and control The 4G module communicates with the remote monitoring device, and the FPGA control circuit controls the acquisition device and each sensor in the environmental perception unit to sample according to the sampling frequency set in the normal working mode;

S8, when the microprocessor determines that the storage and transportation equipment is in the storage stage through data analysis and processing, and the data collected by all sensors in the acquisition device and the environmental perception unit meet the threshold requirements of the storage stage, the microprocessor control system enters the low-power state. The FPGA control circuit controls the acquisition device and each sensor in the environmental perception unit to sample according to the sampling frequency set in the low-power mode, and the FPGA control circuit controls the GPS positioning module, four The integrated weather station module and 4G module stopped working;

S9, when the microprocessor determines that the storage and transportation equipment is idle and does not store coalbed methane through data analysis and processing, and the data collected by all sensors in the environmental perception unit are within the set threshold range, the microprocessor controls the system to enter the sleep mode , the FPGA control circuit controls the three-axis acceleration sensor to continue to work, the remaining sensors or modules in the acquisition device and the environmental perception unit stop working, and the communication unit is controlled to keep receiving information to receive the wake-up command of the remote monitoring device;

S10, when the microprocessor determines that the storage and transportation equipment is in danger through data analysis and processing, the FPGA control circuit controls the sound and light alarm circuit to perform a first-level early warning, and controls the acquisition device and each sensor in the environmental perception unit to enter the high-speed sampling mode, so that the Each sensor conducts sampling at the sampling frequency set by the fast sampling mode, and uploads the internal coalbed methane data and external environmental data to the remote monitoring device in real time.

Optionally, the method for monitoring the whole process of CBM storage and transportation further includes the following steps:

S11, when the system is in the sleep mode, the microprocessor controls the system to enter the normal working mode after the FPGA control circuit receives the manual wake-up signal from the manual wake-up circuit, or the microprocessor controls the system after the communication unit receives the wake-up command from the remote monitoring device enter normal working mode;

S12, when the system enters the normal working mode, the FPGA control circuit activates the LCD touch screen, and the LCD touch screen displays coalbed methane data and external environment data in real time in the form of tables and changing curves.

Optionally, the method for monitoring the whole process of CBM storage and transportation further includes the following steps:

S13, after the LCD touch screen receives the inquiry or operation management signal, or the inquiry or operation management signal from the remote monitoring device, the microprocessor obtains the synchronization time through the clock circuit, generates an operation log and writes it into the backup memory through the data reading and writing module;

S14, the storage unit regularly stores the logistics data, internal coalbed methane data and external environment data of the whole process of CBM transportation, and sends the updated data to remote monitoring every time the logistics data, internal CBM data and external environment data are updated. device.

The beneficial effects of the present invention are:

By setting a main control device, a collection device and a remote monitoring device, and setting the main control device to include a power supply unit, an early warning processing unit, a storage unit, an environmental perception unit, a control unit, an interaction unit and a communication unit, the collection device includes an internal temperature and humidity sensor, The internal pressure sensor, the internal methane concentration sensor and the redundant sensor circuit provide a system and method capable of monitoring the whole process of coalbed methane storage and transportation, through which the coalbed methane storage and transportation can be accurately, reliably and safely Intelligent monitoring is carried out throughout the process to ensure the safety of CBM storage and transportation.

Description of drawings

Figure 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic diagram of the peripheral structure of the main control device and the acquisition device in FIG. 1 .

FIG. 3 is a schematic diagram of the connection relationship between the main sensor and the backup sensor and the redundant sensor circuit.

FIG. 4 is a schematic diagram of the power supply unit in FIG. 1 .

FIG. 5 is a schematic diagram of switching between various working modes of the present invention.

Detailed ways

The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

As shown in FIG. 1 , the whole process monitoring system for coalbed methane storage and transportation in this embodiment includes a main control device 001 , a collection device 002 and a remote monitoring device 003 . The main control device 001 includes a power supply unit 101 and an early warning processing unit 102 , storage unit 103, environment perception unit 104, control unit 105, interaction unit 106 and communication unit 107, the collection device 002 includes an internal temperature and humidity sensor, an internal pressure sensor, an internal methane concentration sensor and a redundant sensor circuit, wherein: all The main control device 001 is installed outside the storage and transportation equipment through a connector, the collection device 002 is installed inside the storage and transportation equipment, and the main control device 001 and the collection device 002 are connected through connectors; as shown in FIG. 4, the power supply unit 101 It includes a main power supply, a backup power supply, a power conditioning circuit, a power switching circuit and a charging circuit; the early warning processing unit 102 includes a sound and light alarm circuit and a self-test switching circuit 121, and the self-test switching circuit 121 includes a power detection circuit, a power switch circuit and redundant sensor circuit; the environmental perception unit 104 includes a four-in-one weather station module of temperature and humidity, atmospheric pressure and light intensity sensors, a gas sensor, a triaxial acceleration sensor and a GPS positioning module; the control unit 105 includes Microprocessor and FPGA control circuit; the communication unit 107 includes a 4G module and a WiFi module; an internal pressure sensor, an internal temperature and humidity sensor and an internal methane concentration sensor are connected to the main control device 1 through connectors, which are respectively used for collecting storage and transportation equipment The pressure, temperature, humidity and methane concentration of the internal coalbed methane form internal coalbed methane data; the connector is connected with the microprocessor of the control unit 105 for sending the internal coalbed methane data to the microprocessor or receiving the microprocessor The redundant sensor circuit is connected to the FPGA control circuit of the control unit 105 for receiving switching control instructions from the control unit 105; the connector is connected to the power supply unit 101, and the power supply unit 101 is used for the acquisition device through the connector 2. Power supply; the environment perception unit 104 is connected to the control unit 105 through an interface circuit, and the environment perception unit 104 is used to combine the temperature, The external environment data formed by humidity, atmospheric pressure, light intensity, vibration and positioning data is transmitted to the microprocessor, or receives instructions from the microprocessor; the control unit 105 is connected to the communication unit 107, and the communication unit 107 is connected to a remote The monitoring device 3 is wirelessly connected, and the control unit 105 uploads the internal coalbed methane data and the external environment data to the remote monitoring device 3 through the communication unit 107 or receives instructions from the remote monitoring device 3; the power detection circuit of the early warning processing unit 102 is connected to the main The power supply and the backup power supply are both connected to detect the power status of the main power supply and the backup power supply; the power detection circuit is connected to the FPGA control circuit, and is used to transmit the power supply status of the main power supply and the backup power supply to the control unit 10 in real time. 5. The control unit 105 is used to select the power supply mode according to the power supply state; the sound and light alarm circuit, the power switching circuit, and the redundant sensor circuit in the early warning processing unit 102 are all connected with the FPGA control circuit of the control unit 105, and are used in the FPGA control circuit. The storage unit 103 is connected with the microprocessor and the FPGA control circuit of the control unit 105, and is used to read/write the data and instructions received and sent by the microprocessor and the FPGA control circuit; The power supply unit 101 is connected to the control unit 105, the interaction unit 106, the environment perception unit 104, the communication unit 107, the early warning processing unit 102 and the storage unit 103, and is used for the control unit 105, the interaction unit 106, the environment perception unit 104, the communication unit 104, and the storage unit 103. The unit 107 , the early warning processing unit 102 and the storage unit 103 are powered.

By arranging that the main control device 001 and the acquisition device 002 are plugged in through connectors, the main control device 001 and the acquisition device 002 adopt a split design, thereby facilitating disassembly and installation.

The 4G module and WiFi module in the communication unit 107 can be used for different stages of storage and transportation. For example, when the storage and transportation equipment is in the storage phase, the communication unit 107 establishes communication through the WiFi module; when the storage and transportation equipment is in the transportation phase, the communication unit 107 establishes communication through the 4G module. Among them, the 4G module is backward compatible with GPRS.

The main power source is lithium battery, and the backup power source is solar panel. The power supply of the power supply unit 101 is first powered by the main power supply. At this time, the control terminal of the power switching circuit is at a high level, and the PMOS transistor cuts off the power supply of the solar cell. When the main power supply voltage is lower than the first preset threshold voltage, the control unit 105 The control terminal of the power switching circuit under control is switched to a low level to supply power for the standby power supply. During the transportation phase, in good weather conditions, the solar panels can automatically charge the main power supply and temporarily supply power to the system to improve the battery life of the system.

Optionally, as shown in FIG. 2 , the main control device 001 and the collection device 002 are sequentially covered with a compression layer 05 , a waterproof layer 04 , a heat insulating layer 03 , an electromagnetic shielding layer 02 and an inner protective layer 01 from outside to inside. . By setting these layers, not only can the main control device 001 and the acquisition device 002 be protected, but also the signals of the main control device 001 and the acquisition device 002 can be prevented from being interfered with. The main control device 001, the collection device 002 and the storage and transportation equipment are sealed with materials such as epoxy resin or silicone rubber, so as to increase the tightness between them. The main control device 001 and the acquisition device 002 adopt a separate sealing method, so that the removal of the main control device 001 will not damage the sealing of the acquisition device 002 and the entire storage and transportation equipment, which increases the safety of the storage and transportation equipment after the monitoring system is installed. Easy maintenance and service. To sum up, the connection between the main control device 001 and the acquisition device 002 has two layers. The first layer is connected by connectors to realize bidirectional connection of signals, and the second layer is that the monitoring system itself is connected to storage and transportation equipment through connectors to realize The connection to the storage and transportation equipment is fixed.

Optionally, the control unit 105 further includes a clock circuit, and the clock circuit is connected to both the microprocessor and the FPGA control circuit of the control unit 105, and is used to obtain the calendar time for the storage and transportation of the coalbed methane. By setting the clock circuit, the data and other information recorded by the monitoring system can correspond to the time.

Optionally, as shown in FIG. 3 , each type of sensor in the acquisition device 2 includes a primary sensor and a backup sensor, and the primary sensor and the backup sensor are respectively connected with two inputs of the multiplexer in the redundant sensor circuit. The control end of the multiplexer is connected to the control port allocated by the FPGA control circuit. When the main sensor fails, the FPGA control circuit switches to the backup sensor for data collection.

Optionally, the storage unit 103 includes a main storage, a backup storage, and a data read/write module, and the main storage and the backup storage are connected to the microprocessor and the FPGA control circuit through the data read/write module; the main storage is an SD card, and the backup is an SD card. It is stored as a Flash card, which is fixed in the main control device 001 and cannot be removed; the SD card is pluggable in the main control device 001, which is convenient for transferring data; the main storage and backup storage are used to store the internal CBM data, External environmental data and logistics data. The logistics data includes in-out information, administrator information, transportation method, batch, origin, production time, transportation time and other information. The data during storage and transportation are stored in the main storage, and important data are backed up in Flash; when the system self-check finds that the SD card in the main storage is not inserted, the SD card is damaged, or the SD card is full and cannot be written The processor alarms, and the Flash card is used as the data storage space for the whole process of storage and transportation.

Optionally, the interaction unit 106 includes a manual wake-up circuit, an LCD touch screen and a USB download circuit; the LCD touch screen is connected to the microprocessor, the manual wake-up circuit is connected to the FPGA control circuit, and the USB download circuit is connected to both the microprocessor and the FPGA control circuit. Connection; the manual wake-up circuit is used to wake up the control unit 105 and the LCD touch screen, and the LCD touch screen is used for display and human-computer interaction; the USB download circuit is used to download data or instructions.

The embodiment of the present invention also provides a whole process monitoring method for coalbed methane storage and transportation. The whole process monitoring method for coalbed methane storage and transportation adopts the above-mentioned whole process monitoring system for coalbed methane storage and transportation, which includes the following steps:

S1, when the FPGA control circuit receives a wake-up signal from the manual wake-up circuit or a wake-up command sent by the remote monitoring device 003, the power supply unit 101 is powered on and started, and the FPGA control circuit controls the power supply detection circuit to perform self-check on the power supply unit 101.

The self-test performed by the power supply unit 101 is mainly to detect whether the main power supply or the backup power supply fails and whether the voltage required by each module and chip can be provided.

S2, when the power detection circuit detects that the voltage of the main power supply is lower than the first preset threshold voltage, the FPGA control circuit controls the sound and light alarm circuit to perform a three-level early warning (ordinary early warning), and at the same time, the FPGA control circuit sends a switch to the power switching circuit. The control command, the power switching circuit controls switching to the standby power supply for power supply; in the process of supplying power from the standby power supply, the power supply detection circuit detects the voltage of the standby power supply in real time, and when the voltage of the standby power supply is greater than the second preset threshold voltage, the FPGA The control circuit controls the standby power supply to continuously supply power to all power modules and chips of the system through the power conditioning circuit, and controls the standby power supply to charge the main power supply through the charging circuit; when the power detection circuit detects that the voltage of the main power supply rises to a level higher than the first When the threshold voltage or the voltage of the backup power supply is lower than the second preset threshold voltage, the FPGA control circuit controls the power switching circuit to switch to the main power supply to supply power.

Wherein, when the voltage of the main power supply is lower than the first preset threshold voltage, the main power supply cannot meet the voltage required by each module and chip, therefore, the power supply needs to be switched. When the voltage of the backup power supply is greater than the second preset threshold voltage, it proves that the backup power supply can provide a stable power supply voltage for each module and chip.

In addition, the system also adopts three-level warning when the following situations occur: 1. The main storage space is insufficient or not inserted, but the backup storage is sufficient. 2. The sensor in the acquisition device 002 is faulty, but the fault is eliminated after the redundant sensor circuit is switched to the backup sensor. The three-level warning is issued under the condition that the normal operation of the system will not be seriously affected, and is used to remind the driver or administrator to repair and replace it as soon as possible when the situation allows.

S3, when the voltage of the main power supply is lower than the first preset threshold voltage and the voltage of the backup power supply is lower than the second preset threshold voltage, the FPGA control circuit controls the sound and light alarm circuit to perform a secondary warning (yellow warning).

When the following situations occur, the system adopts a second-level early warning: 1. The voltage of the main power supply is lower than the first preset threshold voltage, while the voltage of the backup power supply is lower than the second preset threshold voltage; 2. The sensor of the collection device 002 is damaged and redundant After the sensor circuit is switched, the fault cannot be eliminated, or the circuit or module of the main control device 001 is faulty; 3. When the main storage is not inserted, the backup storage space is insufficient; 4. The communication with the remote monitoring device 003 is disconnected, and the data cannot be uploaded. The second-level early warning is a sound and light alarm with a moderate frequency when the system failure cannot be eliminated by the system itself and will hinder the normal operation, which is used to remind the administrator that the system needs to be repaired immediately.

S4 , when the voltage of the main power supply is higher than the first preset threshold voltage or the voltage of the backup power supply is higher than the second preset threshold voltage, the microprocessor tests whether the communication with the remote monitoring device 003 can be established through the communication unit 107 .

S4, after the communication unit 107 establishes communication with the remote monitoring device 003, the microprocessor sends a self-check instruction to the environmental perception unit 104, the acquisition device 002 and the storage unit 103, and determines their respective self-checks according to the response data frames returned by them result.

The self-check of the environment perception unit 104, the collection device 002 and the storage unit 103 is mainly to detect whether they are faulty.

S5, when the microprocessor determines that the environment sensing unit 104, the collection device 002 and the storage unit 103 are all self-checking normal, the microprocessor controls the system to enter the normal working mode, and the internal pressure sensor, the internal temperature and humidity sensor in the collection device 002 and the internal The methane concentration sensor collects the pressure, temperature, humidity and methane concentration data inside the storage and transportation equipment to form the internal coalbed methane data. The four-in-one weather station module, gas sensor, triaxial acceleration sensor, and GPS positioning module in the environmental perception unit 104 Collect the temperature, humidity, atmospheric pressure, light intensity, gas composition and concentration of the external environment, vibration acceleration in each direction and GPS positioning data to form external environmental data, and send the internal coalbed methane data and external environmental data to the microprocessor for data processing Analyzed and processed, written to storage unit 103 and sent to remote monitoring device 003 .

When the microprocessor analyzes and processes the data, it can use algorithm analysis, threshold comparison, data management and neural network algorithm to determine the storage and transportation status and select the working mode. The embodiments of the present invention, such as the specific algorithms and processes involved here, will not be described too much.

S6, when the communication establishment between the communication unit 107 and the remote monitoring device 003 fails, the storage list 103, the environmental perception unit 104 or any one of the acquisition device 002 self-checks and finds a failure, the FPGA control circuit controls the sound and light alarm circuit to perform secondary Warning (yellow warning).

Further, the method for monitoring the whole process of CBM storage and transportation further includes the following steps:

S7, when the microprocessor determines that the storage and transportation equipment is in the transportation stage through data analysis and processing, and the data collected by all sensors in the acquisition device 002 and the environmental perception unit 104 meet the threshold requirements of the transportation stage, the microprocessor control system keeps In the normal working mode, the 4G module communicates with the remote monitoring device 003, and the FPGA control circuit controls the acquisition device 002 and each sensor in the environmental perception unit 104 to sample according to the sampling frequency set in the normal working mode.

The reason why the data collected by all the sensors in the collection device 002 and the environment perception unit 104 meet the threshold requirements of the transportation stage is that rapid sampling is required if some emergencies occur during transportation. For example, during transportation, the vibration acceleration data collected by the triaxial acceleration sensor is in a continuous and disorderly change due to the impact of the road surface and the shock absorption performance of the transportation vehicle itself. However, in the event of an accident, the three The data collected by the axial accelerometer will undergo abrupt changes, which may exceed or fail to meet the threshold requirements of the transportation phase. In this case, it is necessary to switch to the fast sampling mode.

S8, when the microprocessor determines that the storage and transportation equipment is in the storage stage through data analysis and processing, and the data collected by all sensors in the acquisition device 002 and the environmental perception unit 104 meet the threshold requirements of the storage stage, the microprocessor controls the system to enter Low power consumption mode and control the WiFi module to communicate with the remote monitoring device 003, the FPGA control circuit controls the acquisition device 002 and each sensor in the environmental perception unit 104 to sample according to the sampling frequency set in the low power consumption mode, and the FPGA control circuit controls GPS positioning module, four-in-one weather station module and 4G module stop working.

The data collected by all sensors meets the threshold requirements in the storage phase, indicating that the environmental parameters are stable. At this time, the low-power consumption mode is adopted for the energy-saving system.

S9, when the microprocessor determines that the storage and transportation equipment is idle and does not store coalbed methane through data analysis and processing, and the data collected by all sensors in the environmental perception unit 104 are within the set threshold range, the microprocessor controls the system to enter sleep mode Mode, the FPGA control circuit controls the triaxial acceleration sensor to continue to work, the other sensors or modules in the acquisition device 002 and the environment perception unit 104 stop working, and the communication unit 107 is controlled to keep receiving information to receive the wake-up command from the remote monitoring device 003 .

In the embodiment of the present invention, the storage and transportation equipment is idle and does not store coalbed methane, and the data collected by all sensors is within the set threshold range, indicating that the surrounding environment of the storage and transportation equipment is stable, and each sensor does not need to work at this time, so the system enters the sleep mode .

The whole process monitoring system of coalbed methane storage and transportation will intelligently switch the working mode. When the parameters are stable and there is no danger or failure during the storage and transportation process, too many modules and too frequent parameter collection are unnecessary. In order to reduce the unnecessary power of the system. The system has 4 working modes - normal working mode, high-speed sampling mode, low power consumption mode and sleep mode. When it is in the transportation stage and the data is normal, the system maintains the normal working mode, the 4G module communicates with the remote monitoring device 003, and each sensor is sampled according to the normal setting rules. When it is in the storage stage, and the environment and various parameters of CBM are stable, the system enters the low power consumption mode, and the WiFi module communicates with the remote monitoring device 003 through the route installed in the warehouse. The weather station module and 4G module stopped working. When there is no CBM storage in the storage and transportation facilities, and the environmental parameters are normal, the system automatically enters the sleep mode. At this time, only the three-axis acceleration sensor works normally to monitor vibration to wake up the system in an emergency. At the same time, the temperature sensor is sampled at a low speed to monitor temperature. When any environmental or coalbed methane parameter exceeds the threshold and is identified as a real danger by the microprocessor, the system immediately enters the high-speed sampling mode, each module speeds up the sampling frequency, triggers sound and light early warning, and uploads data to the remote monitoring device 003 in real time, as shown in the figure 5, which is a schematic diagram of switching between various working modes.

S10, when the microprocessor determines that the storage and transportation equipment is in danger through data analysis and processing, the FPGA control circuit controls the sound and light alarm circuit to perform a first-level early warning (red early warning), and controls the acquisition device 002 and each sensor in the environmental perception unit 104 Enter the high-speed sampling mode, make each sensor sample at the sampling frequency set by the fast sampling mode, and upload the internal coalbed methane data and external environment data to the remote monitoring device 003 in real time.

A dangerous situation occurs when the microprocessor finds, through data analysis and processing, that the temperature and humidity parameters exceed the threshold, the pressure drop and concentration decrease caused by coalbed methane leakage, and the vibration data abnormality caused by impact, etc. When the system issues a first-level early warning, the microprocessor controls the sound and light early warning circuit to issue a high-frequency sound and light early warning signal through the FPGA, and each sensor collects various parameters in real time at high frequency, and at the same time reports the danger and real-time data to the remote monitoring device 003 through the communication unit 107. From the results of the data analysis, the database is searched to give advice on processing methods or to convey instructions to the remote monitoring device 003 to help eliminate dangerous situations.

Further, the method for monitoring the whole process of CBM storage and transportation further includes the following steps:

S11, when the system is in the sleep mode, the microprocessor controls the system to enter the normal working mode after the FPGA control circuit receives the manual wake-up signal from the manual wake-up circuit, or the microprocessor controls the communication unit after receiving the wake-up command from the remote monitoring device 003 The system enters normal working mode.

S12, when the system enters the normal working mode, the FPGA control circuit activates the LCD touch screen, and the LCD touch screen displays coalbed methane data and external environment data in real time in the form of tables and changing curves.

The microprocessor displays various parameters on the LCD in the form of graphs and real-time curves, which is convenient for viewing the data directly. The administrator can view the data through the LCD touch screen, set various parameters, input control instructions and other interactions; before the interaction, the internal program will perform the administrator login verification, and compare and verify with the administrator data in the database to obtain the authority.

S13, after the LCD touch screen receives the inquiry or operation management signal, or the inquiry or operation management signal from the remote monitoring device 003, the microprocessor obtains the synchronization time through the clock circuit, generates an operation log, and writes it into the backup memory through the data reading and writing module.

The data monitoring center 003 can remotely view data or send control instructions remotely through the communication unit 107 .

S14, the storage unit 103 stores the logistics data, internal coalbed methane data and external environment data of the whole process of CBM transportation, and sends the updated data to the remote site in real time every time the logistics data, the internal coalbed methane data and the external environment data are updated. Monitoring device 003.

Specifically, the storage unit 103 has the function of storing logistics data, and specifically can store and record information such as origin, concentration, serial number, driver, warehouse administrator, responsible person, warehouse entry and exit time, warehouse number, historical logistics and other information. Each time the information is updated, the information is sent to the remote monitoring device 003 and stored in the memory for archival backup. When the monitoring system starts a coalbed methane storage and transportation monitoring task, its origin, concentration and composition, storage information, and administrator information are initialized and set by the administrator; when leaving or entering the storage, it is obtained through the three-axis acceleration sensor. Vibration information, and wake up the GPS positioning module to obtain the position change information, the microprocessor will recognize the change of the storage and transportation status, and at the same time update the start time of this storage or transportation phase and the duration of the previous storage and transportation phase, and in the transportation The transportation route is recorded at the stage, and the inbound and outbound information of this time is obtained by matching the database; the location information obtained by the GPS positioning module during the transportation process is updated and recorded in the logistics information in real time, and the time when the logistics arrives at the destination is estimated.

It should be noted that the steps involved in the above-mentioned method for monitoring the whole process of coalbed methane storage and transportation are mainly used to describe the functions to be implemented in the embodiments of the present invention, and there may be no direct sequence relationship between the steps.

It can be understood that the above embodiments are only exemplary embodiments adopted to illustrate the principle of the present invention, but the present invention is not limited thereto. For those skilled in the art, without departing from the spirit and essence of the present invention, various modifications and improvements can be made, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides a coal bed gas warehousing and transportation whole journey monitoring system, its characterized in that includes main control device (001), collection system (002) and remote monitoring device (003), main control device (001) includes power supply unit (101), early warning processing unit (102), memory cell (103), environmental perception unit (104), control unit (105), interactive unit (106) and communication unit (107), collection system (002) includes inside temperature and humidity sensor, inside pressure sensor, inside methane concentration sensor and redundant sensor circuit, wherein:

the main control device (001) is arranged outside the storage and transportation equipment through a connecting piece, the acquisition device (002) is arranged inside the storage and transportation equipment, and the main control device (001) and the acquisition device (002) are inserted through a connector; the power supply unit (101) comprises a main power supply, a standby power supply, a power supply conditioning circuit, a power supply switching circuit and a charging circuit; the early warning processing unit (102) comprises an audible and visual alarm circuit and a self-checking switching circuit (121), wherein the self-checking switching circuit (121) comprises a power supply detection circuit, a power supply switching circuit and a redundant sensor circuit; the environment sensing unit (104) comprises a four-in-one weather station module of temperature, humidity, atmospheric pressure and illumination intensity sensors, a gas sensor, a three-axial acceleration sensor and a GPS positioning module; the control unit (105) comprises a microprocessor and an FPGA control circuit; the communication unit (107) comprises a 4G module and a WiFi module; the internal pressure sensor, the internal temperature and humidity sensor and the internal methane concentration sensor are connected with the main control device (1) through connectors and are respectively used for collecting the pressure, the temperature, the humidity and the methane concentration of the coal bed gas in the storage and transportation equipment to form internal coal bed gas data; the connector is connected with a microprocessor of the control unit (105) and used for sending internal coal bed gas data to the microprocessor or receiving instructions of the microprocessor; the redundant sensor circuit is connected with an FPGA control circuit of the control unit (105) and used for receiving a switching control instruction from the control unit (105); the connector is connected with the power supply unit (101), and the power supply unit (101) is used for supplying power to the acquisition device (2) through the connector; the environment sensing unit (104) is connected with the control unit (105) through an interface circuit, and the environment sensing unit (104) is used for transmitting external environment data formed by temperature, humidity, atmospheric pressure, illumination intensity, vibration and positioning data collected by the four-in-one weather station module, the gas sensor, the three-axial acceleration sensor and the GPS positioning module to the microprocessor or receiving an instruction from the microprocessor; the control unit (105) is connected with the communication unit (107), the communication unit (107) is wirelessly connected with the remote monitoring device (3), and the control unit (105) uploads internal coal bed gas data and external environment data to the remote monitoring device (3) or receives instructions from the remote monitoring device (3) through the communication unit (107); the power supply detection circuit of the early warning processing unit (102) is connected with both the main power supply and the standby power supply and is used for detecting the power supply states of the main power supply and the standby power supply; the power supply detection circuit is connected with the FPGA control circuit and used for transmitting the power supply states of the main power supply and the standby power supply to the control unit (105) in real time, and the control unit (105) is used for selecting a power supply mode according to the power supply states; an acousto-optic alarm circuit, a power supply switching circuit and a redundant sensor circuit in the early warning processing unit (102) are all connected with an FPGA control circuit of the control unit (105) and are used for acting under the control of the FPGA control circuit; the storage unit (103) is connected with the microprocessor and the FPGA control circuit of the control unit (105) and is used for reading/writing data and instructions received and sent by the microprocessor and the FPGA control circuit; the power supply unit (101) is connected with the control unit (105), the interaction unit (106), the environment sensing unit (104), the communication unit (107), the early warning processing unit (102) and the storage unit (103) and used for supplying power to the control unit (105), the interaction unit (106), the environment sensing unit (104), the communication unit (107), the early warning processing unit (102) and the storage unit (103).

2. The coal bed methane storage and transportation whole-process monitoring system according to claim 1, wherein the main control device (001) and the collection device (002) are sequentially coated with a pressure resistant layer (05), a waterproof layer (04), a heat insulating layer (03), an electromagnetic shielding layer (02) and an inner protective layer (01) from outside to inside.

3. The coal bed methane storage and transportation whole-process monitoring system according to claim 1, wherein the control unit (105) further comprises a clock circuit, and the clock circuit is connected with both the microprocessor and the FPGA control circuit of the control unit (105) and is used for obtaining calendar time for the storage and transportation of the coal bed methane.

4. The coal bed methane storage and transportation whole-process monitoring system according to claim 1, wherein each type of sensor in the collection device (2) comprises a main sensor and a spare sensor, the main sensor and the spare sensor are respectively connected with two input ends of a multiplexer in a redundant sensor circuit, and a control end of the multiplexer is connected to a control port distributed by the FPGA control circuit.

5. The coal bed methane storage and transportation whole-course monitoring system according to claim 1, wherein the storage unit (103) comprises a main storage module, a standby storage module and a data read-write module, and the main storage module and the standby storage module are connected with the microprocessor and the FPGA control circuit through the data read-write module; the main storage is an SD card, the standby storage is a Flash card, and the Flash card is fixed in the main control device (001) and cannot be detached; the SD card is pluggable in the main control device (001); the main storage and the standby storage are used for storing internal coal bed gas data, external environment data and logistics data.

6. The coal bed methane storage and transportation whole-process monitoring system of claim 1, wherein the interaction unit (106) comprises a manual wake-up circuit, an LCD touch screen and a USB download circuit; the LCD touch screen is connected with the microprocessor, the manual wake-up circuit is connected with the FPGA control circuit, and the USB download circuit is connected with both the microprocessor and the FPGA control circuit; the manual wake-up circuit is used for waking up the control unit (105) and the LCD touch screen, and the LCD touch screen is used for displaying and man-machine interaction; the USB downloading circuit is used for downloading data or instructions.

7. A coal bed gas storage and transportation whole-process monitoring method adopts the coal bed gas storage and transportation whole-process monitoring system of any one of claims 1 to 6, and is characterized by comprising the following steps of:

s1, when the FPGA control circuit receives a wake-up signal of the manual wake-up circuit or a wake-up instruction sent by the remote monitoring device (003), the power supply unit (101) is powered on and started, and the FPGA control circuit controls the power supply detection circuit to perform self-detection on the power supply unit (101);

s2, when the power supply detection circuit detects that the voltage of the main power supply is lower than a first preset threshold voltage, the FPGA control circuit controls the acousto-optic alarm circuit to perform three-stage early warning, meanwhile, the FPGA control circuit sends a switching control instruction to the power supply switching circuit, and the power supply switching circuit controls the switching to the standby power supply to supply power; in the process of supplying power to the standby power supply, the power supply detection circuit detects the voltage of the standby power supply in real time, when the voltage of the standby power supply is greater than a second preset threshold voltage, the FPGA control circuit controls the standby power supply to supply power to each power utilization module and each chip of the system through the power supply conditioning circuit continuously, and controls the standby power supply to charge the main power supply through the charging circuit; when the power supply detection circuit detects that the voltage of the main power supply is increased to be higher than a first preset threshold voltage or the voltage of the standby power supply is lower than a second preset threshold voltage, the FPGA control circuit controls the power supply switching circuit to switch the main power supply for supplying power;

and S3, when the voltage of the main power supply is lower than a first preset threshold voltage and the voltage of the standby power supply is lower than a second preset threshold voltage, the FPGA control circuit controls the acousto-optic alarm circuit to perform secondary early warning.

S4, when the voltage of the main power supply is higher than a first preset threshold voltage or the voltage of the standby power supply is higher than a second preset threshold voltage, the microprocessor tests whether the communication with the remote monitoring device (003) can be established through the communication unit (107);

s4, after the communication unit (107) establishes communication with the remote monitoring device (003), the microprocessor sends self-checking instructions to the environment sensing unit (104), the acquisition device (002) and the storage unit (103), and determines respective self-checking results according to response data frames returned by the environment sensing unit, the acquisition device and the storage unit;

s5, when the microprocessor determines that the environment sensing unit (104), the acquisition device (002) and the storage unit (103) are all self-checking normally, the microprocessor control system enters a normal working mode, the internal pressure sensor, the internal temperature and humidity sensor and the internal methane concentration sensor in the acquisition device (002) respectively acquire pressure, temperature and humidity and methane concentration data inside the storage and transportation equipment to form internal coalbed methane data, the four-in-one weather station module, the gas sensor, the three-axial acceleration sensor and the GPS positioning module in the environment sensing unit (104) respectively acquire temperature, humidity, atmospheric pressure, illumination intensity, gas composition and concentration of external environment, vibration acceleration and GPS positioning data of all directions to form external environment data, and the internal coalbed methane data and the external environment data are sent to the microprocessor for data analysis and processing, writing to the memory unit (103) and transmitting to the remote monitoring device (003).

S6, when the communication between the communication unit (107) and the remote monitoring device (003) is failed to establish, and any one of the storage unit (103), the environment sensing unit (104) or the acquisition device (002) finds a fault through self-detection, the FPGA control circuit controls the sound-light alarm circuit to perform secondary early warning.

8. The method for monitoring the whole process of coal bed methane storage and transportation according to claim 7, further comprising the following steps:

s7, when the microprocessor determines that the storage and transportation equipment is in a transportation stage through data analysis and processing, and data acquired by all sensors in the acquisition device (002) and the environment sensing unit (104) meet the threshold requirement of the transportation stage, the microprocessor control system keeps a normal working mode and controls the 4G module to communicate with the remote monitoring device (003), and the FPGA control circuit controls the sensors in the acquisition device (002) and the environment sensing unit (104) to sample according to the sampling frequency set by the normal working mode;

s8, when the microprocessor determines that the storage and transportation equipment is in a storage stage through data analysis and processing, and data acquired by all sensors in the acquisition device (002) and the environment sensing unit (104) meet the threshold requirement of the storage stage, the microprocessor control system enters a low power consumption mode and controls the WiFi module to communicate with the remote monitoring device (003), the FPGA control circuit controls the sensors in the acquisition device (002) and the environment sensing unit (104) to sample according to the sampling frequency set by the low power consumption mode, and the FPGA control circuit controls the GPS positioning module, the four-in-one weather station module and the 4G module to stop working;

s9, when the microprocessor determines that the coal bed gas is not stored in the storage and transportation equipment in an idle state through data analysis and processing, and the data acquired by all the sensors in the environment sensing unit (104) are within a set threshold range, the microprocessor control system enters a sleep mode, the FPGA control circuit controls the triaxial acceleration sensor to continue working, the other sensors or modules in the acquisition device (002) and the environment sensing unit (104) stop working, and the communication unit (107) is controlled to keep receiving information to receive a wake-up instruction of the remote monitoring device (003);

s10, when the microprocessor determines that the storage and transportation equipment is in a dangerous situation through data analysis and processing, the FPGA control circuit controls the acousto-optic alarm circuit to perform primary early warning, controls the sensors in the acquisition device (002) and the environment sensing unit (104) to enter a high-speed sampling mode, enables the sensors to perform sampling at the sampling frequency set by the high-speed sampling mode, and uploads internal coal bed gas data and external environment data to the remote monitoring device (003) in real time.

9. The method for monitoring the whole process of coal bed methane storage and transportation according to claim 8, further comprising the following steps:

s11, when the system is in the sleep mode, the microprocessor control system enters the normal working mode after the FPGA control circuit receives the manual wake-up signal from the manual wake-up circuit, or the microprocessor control system enters the normal working mode after the communication unit receives the wake-up command of the remote monitoring device (003);

and S12, when the system enters a normal working mode, the FPGA control circuit activates the LCD touch screen, and the LCD touch screen displays coal bed gas data and external environment data in real time in a data form of a table and a change curve.

10. The method for monitoring the whole process of coal bed methane storage and transportation according to claim 7, further comprising the following steps:

s13, after the LCD touch screen receives the inquiry or operation management signal or the inquiry or operation management signal from the remote monitoring device (003), the microprocessor obtains the synchronous time through the clock circuit, generates the operation log and writes the operation log into the spare memory through the data read-write module;

s14, the storage unit (103) stores logistics data, internal coalbed methane data and external environment data of the whole coalbed methane transportation process, and when the logistics data, the internal coalbed methane data and the external environment data are updated each time, the updated data are sent to the remote monitoring device (003) in real time.

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