CN111678554A - Trench cable state monitoring device and state monitoring method thereof - Google Patents
Trench cable state monitoring device and state monitoring method thereof Download PDFInfo
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Abstract
The invention discloses a state monitoring device for a trench cable, which comprises a sensor module and an intelligent communication terminal, wherein the sensor module and the intelligent communication terminal are periodically switched into an operation mode and a sleep mode, the sensor module and the intelligent communication terminal respectively comprise a main control chip, a magnetic field induction switch and a first communication module, the intelligent communication terminal also comprises a second communication module, and the timing report and the abnormal report of data of the sensor module and the intelligent communication terminal are completed through the first communication module and the second communication module. The invention also discloses a state monitoring method of the trench cable, which can monitor the cable and the cable running environment, report the acquired data regularly, report the abnormal data when the data exceeds the threshold value, and simultaneously, the reporting frequency and the threshold value are adjustable, so that the whole set of device has the advantage of ultra-low power consumption.
Description
Technical Field
The invention relates to the technical field of state monitoring of trench cables in a power distribution network, in particular to a state monitoring device and a state monitoring method for the trench cables.
Background
With the development of power grids, the application of power cables in power systems is more and more extensive, and particularly, the power cables are used and developed more rapidly in urban power transmission and distribution systems, so that the maintenance of safe and stable operation of the power cables is an important link for ensuring the reliability of power supply. The power cable can generate insulation aging and damage phenomena due to various reasons such as electromagnetism, machinery, heating, environmental corrosion and the like in a long-term operation process, so that the service life of the cable is shortened, the safe and reliable operation of the power cable is influenced, a large-area power failure of a power grid can be caused in a serious situation, and serious loss is caused to the life of residents and industrial production. However, because the power cable is mostly laid in a trench cable well, a large amount of manpower and material resources are required to be invested in the regular inspection of the cable, meanwhile, the potential safety hazard of the cable is difficult to find in time, and the on-line monitoring of the fault of the power cable has important research significance in order to know the running state of the cable in time and guarantee the safe running of the cable.
The manufacturers for carrying out underground cable monitoring nationwide are more, but the underground cable monitoring is mainly applied to tunnel cable monitoring, and because the requirements of the underground cable monitoring on the power consumption of equipment are higher, and different operating environments of the underground cables are different, different parameters need to be set, and the manufacturers applied to the underground cable monitoring are fewer; on the other hand, the operation environment of the distribution network trench cable is complex, the state of the cable is required to be monitored, and the state of the cable environment is required to be monitored, so that various types of sensors are required, and due to different functions of the sensors in different types, the sensors are greatly different in design, so that programs and hardware equipment cannot be used universally, and great inconvenience is brought to development, production, maintenance and the like.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a state monitoring device and a state monitoring method for a trench cable.
In order to achieve the purpose, the invention adopts the technical scheme that: a trench cable state monitoring device comprises a sensor module and an intelligent communication terminal, wherein the sensor module and the intelligent communication terminal periodically switch an operation mode and a sleep mode, the main control chip is used for logic control of the sensor module and the intelligent communication terminal, the magnetic field induction switch is used for switching the sensor module and the intelligent communication terminal between the operation mode and the sleep mode, so that the sensor module and the intelligent communication terminal enter the operation mode for time synchronization when being powered on for the first time, the first communication module is used for communication between the sensor module and the intelligent communication terminal, the sensor module further comprises a data acquisition module, the data acquisition module is used for acquiring different sensing data, and the intelligent communication terminal further comprises a second communication module, the second communication module is used for transmitting the collected data of the intelligent communication terminal and the sensor module to the background and receiving a command sent by the background, and the first communication module and the second communication module are used for finishing the timing report and the abnormal report of the data of the sensor module and the intelligent communication terminal.
As a preferred embodiment, the data acquisition module comprises a cable temperature sensor, an ambient humidity sensor, a cable vibration sensor, an ambient water level sensor and an ambient illumination sensor, different sensors respectively correspond to different sensor interfaces, and when different sensor data need to be acquired, the corresponding sensor interfaces are called.
As another preferred embodiment, the reporting at regular time includes collecting and uploading information of each sensor at regular time, and reporting the information when the sensor is abnormal, specifically, comparing the read sensor data with a set threshold, reporting the abnormality if the read sensor data exceeds the threshold, and not reporting the abnormality if the read sensor data does not exceed the threshold.
As another preferred embodiment, the sensor module and the intelligent communication terminal further include a buzzer and a battery, the intelligent communication terminal further includes an interface display module and a key processing module, the buzzer is used for prompting the key of the intelligent communication terminal and prompting whether the sensor is successfully added and the synchronization is successful, the interface display module, the key processing module and the magnetic field induction switch are used in a matched manner to display information of the intelligent communication terminal and the sensor, including information of the number, time and version of the intelligent communication terminal, the sensor can be added to the intelligent communication terminal, the sensor under the intelligent communication terminal is deleted, meanwhile, all numbers of the sensors hung under the intelligent communication terminal can be displayed, and the battery is used for supplying power to the sensor module and the intelligent communication terminal.
As another preferred embodiment, the first communication module is a Zigbee module, and the second communication module is an NB-IoT module.
The invention also provides a trench cable state monitoring method, which adopts the trench cable state monitoring device and comprises the following steps:
after the sensor module and the intelligent communication terminal are electrified for the first time, the sensor module and the intelligent communication terminal are both in an operation mode by using the magnetic field induction switch to carry out time synchronization;
and after the time synchronization is finished, the sensor module and the intelligent communication terminal finish timing report and abnormal report by periodically switching the operation mode and the sleep mode.
As a preferred embodiment, the time synchronization of the sensor module and the intelligent communication terminal in the operation mode by using the magnetic field inductive switch specifically includes:
the sensor in intelligent communication terminal and the sensor module is close to respectively with magnet, make it all enter into the operational mode, make and to communicate between the two, intelligent communication terminal issues the message that carries serial number and time information for the sensor, after the message was received to the sensor, set up serial number and time of itself, can return a message for intelligent communication terminal simultaneously, after the reply message of sensor was received to intelligent communication terminal, save the serial number of sensor, thereby accomplish the first time synchronization between intelligent communication terminal and the sensor.
As another preferred embodiment, the method further includes timing time synchronization between the intelligent communication terminal and the sensor, and specifically includes:
the intelligent communication terminal and the sensor switch between an operation mode and a sleep mode according to preset frequency synchronization after time synchronization is completed for the first time, when the intelligent communication terminal and the sensor are both in the operation mode, the sensor collects self data and sends the data to the intelligent communication terminal, the intelligent communication terminal replies after receiving the data, time is available in a replied message, and the sensor corrects the self time again according to the time to realize the time synchronization with the intelligent communication terminal.
As another preferred embodiment, the timed reporting and the abnormal reporting of the sensor module specifically include:
and (3) reporting at regular time: the sensor enters an operation mode every T1 time, uploads self data regularly, waits for the reply of the intelligent communication terminal after uploading the data, sets self parameters including a reporting frequency and a threshold value according to a reply message if the reply of the intelligent communication terminal is received, resends the self data every a certain time if the reply of the intelligent communication terminal is not received, enters a sleep mode until the reply of the intelligent communication terminal is received, and also enters the sleep mode if the reply of the intelligent communication terminal is not received within the opening time T3;
and (4) reporting the exception: the sensor enters an operation mode every T2 time to collect data, if the sensor is not abnormal, the sensor directly enters a sleep mode, if the data of the sensor exceeds a set threshold value, the abnormal data of the sensor is uploaded, the intelligent communication terminal waits for reply after the data is uploaded, if the reply of the intelligent communication terminal is not received, the abnormal data of the sensor is sent again every certain time, the sensor enters the sleep mode until the reply of the intelligent communication terminal is received, and if the reply of the intelligent communication terminal is not received within the opening time T3, the sensor also enters the sleep mode.
As another preferred embodiment, the timing reporting and the exception reporting of the intelligent communication terminal specifically include:
and (3) reporting at regular time: the intelligent communication terminal enters an operation mode every T1 time, regularly detects whether sensor data are received or not, replies after the data are received, the reply data comprise frequency and threshold parameters, the received sensor data are packaged and uploaded to a background after the sensor data are received within a regular reporting time T3, the background is waited to receive the reply, if the background replies within a T4 time, the intelligent communication terminal stores the received reply data, the reply data comprise frequency and threshold parameters, the intelligent communication terminal enters a sleep mode after the data are stored, the data replied by the background are issued when the data are reported by the sensor at the next time, the frequency of the intelligent communication terminal is modified, if the data are not replied within a T4 time, the intelligent communication terminal also enters the sleep mode, and the threshold and the frequency parameters are not changed;
and (4) reporting the exception: the intelligent communication terminal enters an operation mode every T2 time, regularly detects whether sensor data are received or not, replies after receiving the data, receives abnormal reporting time T3 of the sensor data, does not report if the abnormal data do not exist, enters a sleep mode, packages and sends the received data to a background if the abnormal data exist, waits for receiving the background reply, stores the received reply data if the background replies within T4 time, contains frequency and threshold parameters in the reply data, enters the sleep mode after the storage is finished, sends down the data replied by the background when the sensor reports the data regularly next time, modifies the frequency of the intelligent communication terminal, and enters the sleep mode if the abnormal data do not exist within T4 time, and the threshold and the frequency parameters are not changed.
The invention has the beneficial effects that:
1. the invention can comprehensively monitor the trench cable and the environment; the data can be collected at regular time and the abnormal data can be reported when the abnormal data exists; the acquisition frequency and the data threshold are adjustable; has ultra-low power consumption and can continuously run for more than three years.
2. The hardware design is modularized, and different data are acquired only by accessing the corresponding acquisition modules, so that the development, production and maintenance are facilitated; the software design is modularized, and only the corresponding data acquisition interface is needed to be called for acquiring different data, thereby facilitating development and maintenance.
3. According to the invention, time synchronization is carried out through the sensor module and the intelligent communication terminal, so that the intelligent communication terminal and the sensor can simultaneously enter an operation mode and a sleep mode, and ultra-low power consumption can be realized; the intelligent communication terminal is provided with a display screen, a key and a buzzer, and the sensor is provided with the buzzer, so that whether time synchronization is successful or not can be conveniently judged; after the magnet is successfully synchronized for the first time, the sensor and the intelligent communication terminal can be synchronized again when data are transmitted at fixed time each time, and time synchronization is guaranteed.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a sensor module and an intelligent communication terminal in an embodiment of the present invention;
fig. 3 is a flow chart of a status monitoring method according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Examples
As shown in fig. 1 and 2, a trench cable state monitoring device includes a sensor module and an intelligent communication terminal, wherein the sensor module switches between an operation mode and a sleep mode periodically, and the sensor module is composed of a main control chip, a magnet inductive switch, a zigbee module, a buzzer, a battery, a data acquisition module, and the like; the data acquisition module comprises a cable temperature acquisition sensor, a cable vibration sensor, an ambient temperature sensor, an ambient humidity sensor, an ambient water level sensor and an ambient light sensor and is used for acquiring different sensing data.
The intelligent communication terminal comprises a main control chip, an interface display module, a key processing module, an NB-IoT module, a magnetic field induction switch, a zigbee module, a buzzer and the like.
The main control chip is used for logic control of the intelligent communication terminal and the sensor, the magnetic field induction switch is used for switching the intelligent communication terminal and the sensor between an operation mode and a sleep mode, the interface display module, the touch key module and the magnetic field induction switch are used in cooperation for displaying information of the intelligent communication terminal and the sensor, the information comprises information of the intelligent communication terminal, such as serial number, time, version and the like, the sensor can be added to the intelligent communication terminal, the sensor under the intelligent communication terminal is deleted, simultaneously, the serial number of all sensors hung under the intelligent communication terminal can be displayed, the Zigbee module is used for communication between the intelligent communication terminal and the sensor, the NB-IoT module is used for transmitting the acquired data of the intelligent communication terminal and the sensor to the NB platform, and then the NB platform can transmit commands to the background, and the buzzer is used for prompting whether the key of the intelligent communication terminal and the sensor is added successfully and prompting the synchronization, the battery is used for supplying power to the intelligent communication terminal and the sensor, the intelligent communication terminal and the sensor communicate through the zigbee module according to a specified protocol, and the zigbee module needs to be set to be the same frequency band as the zigbee module of the intelligent communication terminal and the sensor below the intelligent communication terminal.
The hardware structures of all the sensors are the same, except for different data acquisition modules, acquisition interfaces of all the sensor modules are reserved on a circuit, for example, when cable temperature information needs to be acquired, only the cable temperature sensor needs to be connected, and other sensors do not need. The modularized design is adopted, hardware acquisition interfaces of all sensors are reserved on the same sensor module, different sensors and peripheral circuits are accessed, the same protocol and acquisition flow are designed on software, and only different interfaces are called on acquired data, so that the function of acquiring different sensor data is realized.
In specific implementation, the sizes, shapes and functions of different sensors are different in hardware, a cable temperature sensor, an environment water level sensor and an environment temperature and humidity sensor need to be led out of a shell for monitoring the states of a cable and an environment, the shell is punched according to the needs, the environment illumination sensor needs to sense illumination information, the shell needs to be transparent, and a cable vibration sensor is installed inside the shell; in the aspect of software, the software processes of all the sensors are the same, except for different collected data, the sensors are distinguished through macro definition in a program according to different collected contents, different sensors only need to turn on corresponding macro definition switches, in the process of program design, different data collection interfaces are designed for different sensors, and when different sensor data are collected, only corresponding sensor interfaces need to be called.
The acquisition of the sensor comprises timing acquisition and abnormal reporting, wherein the timing acquisition needs to acquire and upload the information of the sensor at regular time, and the abnormal reporting only reports the information when the sensor is abnormal.
The sensors are different in type and can be divided into two types, wherein one type is an inquiry type and comprises a cable temperature sensor, an environment temperature sensor and an environment humidity sensor, and the other type is an interruption type and comprises a cable vibration sensor, an environment water level sensor and an environment illumination sensor.
When reporting data, the query type sensor needs to query data of the sensor module, the interrupt type sensor detects interrupt when exceeding a set threshold value, and reads data of the sensor module in the interrupt, when reporting regularly, all sensors report the acquired data regularly, when reporting abnormally, the interrupt type sensor and the query type sensor need to compare the read sensor data with the set threshold value, if the read sensor data exceeds the threshold value, the abnormal sensor is reported, and if the read sensor data does not exceed the threshold value, the abnormal sensor is not reported.
The number of each type of sensor can be freely selected and matched as required, at most thirty sensors can be hung below one intelligent communication terminal, and data and abnormal reported data are collected at regular time and transmitted to the intelligent communication terminal, and are transmitted to a background by the intelligent communication terminal for display; through modularized software and hardware design, the development, production and maintenance costs of products are effectively reduced.
As shown in fig. 3, this embodiment further provides a method for monitoring a state of a trench cable, where the device for monitoring a state of a trench cable is used, and the method for monitoring a state of a trench cable includes: after the sensor module and the intelligent communication terminal are electrified for the first time, the sensor module and the intelligent communication terminal are both in an operation mode by using the magnetic field induction switch to carry out time synchronization; and after the time synchronization is finished, the sensor module and the intelligent communication terminal finish timing report and abnormal report by periodically switching the operation mode and the sleep mode.
Specifically, after the intelligent communication terminal and the sensor are powered on, the system has default initial time, and if the time of the intelligent communication terminal is not set or the time of the intelligent communication terminal and the time of the sensor are not synchronous, the intelligent communication terminal and the sensor are switched between a sleep mode and an operation mode according to respective time timing respectively, so that the low power consumption of the intelligent communication terminal and the sensor is guaranteed. The time synchronization is widely applied, including using a GPS module to time, etc., but the trench cable needs to realize ultra-low power consumption due to the limitation of operating conditions, and the power consumption for installing the GPS time-setting module is high, and meanwhile, the trench cable needs to monitor the self and the environmental state by the cable, so a plurality of sensors are needed, and the intelligent communication terminal collects and reports the information of each sensor, so the time synchronization of the intelligent communication terminal and the sensors needs to be realized.
When the time of the intelligent communication terminal needs to be set during initial power-on, the magnet is close to the intelligent communication terminal to enable the intelligent communication terminal to enter an operation mode, parameters such as time, serial numbers and the like can be set through the display screen and the touch keys, after the magnet is moved away, the intelligent communication terminal enters a sleep mode, and then the intelligent communication terminal is switched between the sleep mode and the operation mode at regular time according to the set time.
The first time synchronization between the intelligent communication terminal and the sensor:
the intelligent communication terminal and the sensor are respectively close to the magnet, so that the intelligent communication terminal and the sensor can enter an operation mode, when the magnet is close to the intelligent communication terminal, an interface is lightened, parameters can be set and inquired, when the magnet is close to the sensor, a buzzer of the sensor makes a sound prompt, the problem of inconvenient debugging after the installation of equipment is solved through sound-light display, and communication can be carried out between the magnet and the sensor.
The intelligent communication terminal sends a message carrying serial numbers and time information to the sensors, the sensors set the serial numbers and time of the sensors after receiving the message, meanwhile, a message can be returned to the intelligent communication terminal, the sensor buzzer makes a sound normally, the intelligent communication terminal stores the serial numbers of the sensors after receiving the reply message of the sensors, all sensors hung below the intelligent communication terminal can be checked through the display screen, after the time synchronization of the sensors is successful, the magnets can be removed, the sensor buzzer stops at the moment, other sensors can be added according to the same operation if needed, until all sensors are configured, the intelligent communication terminal removes the magnets, the display interface is extinguished, and accordingly, the time synchronization between the intelligent communication terminal and all the sensors is completed.
Timing time synchronization between the intelligent communication terminal and the sensor:
after the time synchronization is completed for the first time, the intelligent communication terminal and the sensor are switched between the operation mode and the sleep mode according to the preset frequency synchronization. When the sensor and the intelligent communication terminal are in the operation mode, the sensor collects data of the sensor and sends the data to the intelligent communication terminal, the intelligent communication terminal replies after receiving the data, the replied message has time, and the sensor corrects the time of the sensor again according to the time to realize time synchronization with the intelligent communication terminal.
The sensor and the intelligent communication terminal realize low power consumption by periodically switching an operation mode and a sleep mode, when in the operation mode, the main control chip, the zigbee transmission module and the NB-IoT transmission module are all switched to the operation mode and can collect and transmit data, when in the sleep mode, the main control chip and the NB-IoT transmission module are all in the low power consumption mode, the zigbee transmission module is directly powered off, and the standby power consumption of the intelligent communication terminal and all the sensors is between 45uA and 80 uA.
And (3) regularly reporting and abnormally reporting by a sensor:
the timing reporting frequency T1 can be set to be 15min, 60min and one day, the abnormal reporting frequency T2 can be set to be 1min, 5min and 15min, the longest opening time T3 of the sensor after entering the running mode is 30s, and then the sensor enters the sleep mode, and parameters of the sensor comprise a threshold value and the reporting frequency.
And (3) reporting at regular time: the sensor enters an operation mode every T1 time, uploads self data regularly, waits for the reply of the intelligent communication terminal after uploading the data, sets self parameters including a reporting frequency and a threshold value according to a reply message if the reply of the intelligent communication terminal is received, sends the self data again every 1s if the reply of the intelligent communication terminal is not received, enters a sleep mode until the reply of the intelligent communication terminal is received, and also enters the sleep mode if the reply of the intelligent communication terminal is not received within the opening time T3.
And (4) reporting the exception: the sensor enters an operation mode every T2 time to collect data, if the sensor is not abnormal, the sensor directly enters a sleep mode, if the data of the sensor exceeds a set threshold value, the abnormal data of the sensor is uploaded, the intelligent communication terminal waits for replying after the data is uploaded, if the reply of the intelligent communication terminal is not received, the abnormal data of the sensor is sent again every 1s, the sensor enters the sleep mode until the reply of the intelligent communication terminal is received, and if the reply of the intelligent communication terminal is not received within the opening time T3, the sensor also enters the sleep mode.
The intelligent communication terminal reports regularly and reports abnormally:
similarly, the acquisition frequencies of the intelligent communication terminal and the sensor are set to be the same, the timing reporting frequency T1 can be set to be 15min, 60min and one day, the abnormal reporting frequency T2 can be set to be 1min, 5min and 15min, the data acquisition time T3 of the intelligent communication terminal after entering the operation mode is 30s, NB transmission is started after the data acquisition, the NB data transmission time T4 is 20s, then the intelligent communication terminal enters the sleep mode, and the parameters of the intelligent communication terminal have the reporting frequencies.
And (3) reporting at regular time: the intelligent communication terminal enters an operation mode at intervals of a certain time T1, regularly detects whether sensor data are received or not, replies after the data are received, the reply data comprise frequency and threshold parameters, the received data are packaged and uploaded to an NB platform after the sensor data are received and reported for a time T3, the NB platform waits for receiving the reply of the NB platform, if the NB platform replies within the time T4, the intelligent communication terminal stores the received reply data, the reply data comprise frequency and threshold parameters, the NB platform enters a sleep mode after the data are stored, the data replied by the NB platform are issued next time when the sensor reports the data regularly, the frequency of the NB platform is modified, if the NB platform does not reply within the time T4, the NB platform also enters the sleep mode, and the threshold parameters are not changed.
And (4) reporting the exception: the intelligent communication terminal enters an operation mode every T2 time, regularly detects whether sensor data are received or not, replies after receiving the data, receives abnormal reporting time T3 of the sensor data, does not report if the abnormal data do not exist, enters a sleep mode, packages and sends the received data to an NB platform if the abnormal data exist, waits for receiving the reply of the NB platform, stores the received reply data if the NB platform replies within T4 time, the reply data comprise frequency and threshold parameters, enters the sleep mode after the storage is finished, sends the data replied by the NB platform down when the sensor reports the data regularly next time, modifies the frequency of the intelligent communication terminal, and also enters the sleep mode if the abnormal data do not reply within T4 time, and the threshold and the frequency parameters are not changed.
The intelligent communication terminal reports data to the NB platform through NB-IoT, and the background displays the timing reported data and abnormal reported data of the sensor through subscribing the data of the NB platform.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. A trench cable state monitoring device is characterized by comprising a sensor module and an intelligent communication terminal, wherein the sensor module and the intelligent communication terminal are periodically switched between an operation mode and a sleep mode, the sensor module and the intelligent communication terminal respectively comprise a main control chip, a magnetic field induction switch and a first communication module, the main control chip is used for logic control of the sensor module and the intelligent communication terminal, the magnetic field induction switch is used for switching the sensor module and the intelligent communication terminal between the operation mode and the sleep mode, so that the sensor module and the intelligent communication terminal enter the operation mode for time synchronization when being powered on for the first time, the first communication module is used for communication between the sensor module and the intelligent communication terminal, the sensor module further comprises a data acquisition module, the data acquisition module is used for acquiring different sensing data, and the intelligent communication terminal further comprises a second communication module, the second communication module is used for transmitting the collected data of the intelligent communication terminal and the sensor module to the background and receiving a command sent by the background, and the first communication module and the second communication module are used for finishing the timing report and the abnormal report of the data of the sensor module and the intelligent communication terminal.
2. The trench cable state monitoring device according to claim 1, wherein the data acquisition module comprises a cable temperature sensor, an ambient humidity sensor, a cable vibration sensor, an ambient water level sensor and an ambient illumination sensor, different sensors respectively correspond to different sensor interfaces, and when different sensor data need to be acquired, the corresponding sensor interfaces are called.
3. The device for monitoring the state of the trench cable according to claim 2, wherein the reporting at regular time comprises collecting and uploading information of each sensor at regular time, and the reporting at abnormal time comprises reporting information when the sensor is abnormal, specifically comparing the read sensor data with a set threshold, reporting the abnormal state if the read sensor data exceeds the threshold, and not reporting the abnormal state if the read sensor data does not exceed the threshold.
4. The trench cable state monitoring device according to claim 2, wherein the sensor module and the intelligent communication terminal further comprise a buzzer and a battery, the intelligent communication terminal further comprises an interface display module and a key processing module, the buzzer is used for prompting key pressing of the intelligent communication terminal and prompting whether the sensor is successfully added and successfully synchronized, the interface display module, the key processing module and the magnetic field induction switch are used in a matched mode and used for displaying information of the intelligent communication terminal and the sensor, the information comprises intelligent communication terminal serial numbers, time and version information, the sensor can be added to the intelligent communication terminal, the sensor under the intelligent communication terminal is deleted, all sensor serial numbers hung under the intelligent communication terminal can be displayed, and the battery is used for supplying power to the sensor module and the intelligent communication terminal.
5. The device of claim 1, wherein the first communication module is a Zigbee module and the second communication module is an NB-IoT module.
6. A state monitoring method of a trench cable, using the state monitoring apparatus of any one of claims 1 to 5, the state monitoring method comprising:
after the sensor module and the intelligent communication terminal are electrified for the first time, the sensor module and the intelligent communication terminal are both in an operation mode by using the magnetic field induction switch to carry out time synchronization;
and after the time synchronization is finished, the sensor module and the intelligent communication terminal finish timing report and abnormal report by periodically switching the operation mode and the sleep mode.
7. The method for monitoring the state of the trench cable according to claim 6, wherein the step of enabling the sensor module and the intelligent communication terminal to enter the operation mode for time synchronization by using the magnetic field induction switch specifically comprises the steps of:
the sensor in intelligent communication terminal and the sensor module is close to respectively with magnet, make it all enter into the operational mode, make and to communicate between the two, intelligent communication terminal issues the message that carries serial number and time information for the sensor, after the message was received to the sensor, set up serial number and time of itself, can return a message for intelligent communication terminal simultaneously, after the reply message of sensor was received to intelligent communication terminal, save the serial number of sensor, thereby accomplish the first time synchronization between intelligent communication terminal and the sensor.
8. The method for monitoring the state of the trench cable according to claim 7, further comprising timing time synchronization between the intelligent communication terminal and the sensor, specifically comprising:
the intelligent communication terminal and the sensor switch between an operation mode and a sleep mode according to preset frequency synchronization after time synchronization is completed for the first time, when the intelligent communication terminal and the sensor are both in the operation mode, the sensor collects self data and sends the data to the intelligent communication terminal, the intelligent communication terminal replies after receiving the data, time is available in a replied message, and the sensor corrects the self time again according to the time to realize the time synchronization with the intelligent communication terminal.
9. The method for monitoring the state of the trench cable according to claim 6, wherein the timed reporting and the abnormal reporting of the sensor module specifically comprise:
and (3) reporting at regular time: the sensor enters an operation mode every T1 time, uploads self data regularly, waits for the reply of the intelligent communication terminal after uploading the data, sets self parameters including a reporting frequency and a threshold value according to a reply message if the reply of the intelligent communication terminal is received, resends the self data every a certain time if the reply of the intelligent communication terminal is not received, enters a sleep mode until the reply of the intelligent communication terminal is received, and also enters the sleep mode if the reply of the intelligent communication terminal is not received within the opening time T3;
and (4) reporting the exception: the sensor enters an operation mode every T2 time to collect data, if the sensor is not abnormal, the sensor directly enters a sleep mode, if the data of the sensor exceeds a set threshold value, the abnormal data of the sensor is uploaded, the intelligent communication terminal waits for reply after the data is uploaded, if the reply of the intelligent communication terminal is not received, the abnormal data of the sensor is sent again every certain time, the sensor enters the sleep mode until the reply of the intelligent communication terminal is received, and if the reply of the intelligent communication terminal is not received within the opening time T3, the sensor also enters the sleep mode.
10. The method for monitoring the state of the trench cable according to claim 9, wherein the timed reporting and the abnormal reporting of the intelligent communication terminal specifically comprise:
and (3) reporting at regular time: the intelligent communication terminal enters an operation mode every T1 time, regularly detects whether sensor data are received or not, replies after the data are received, the reply data comprise frequency and threshold parameters, the received sensor data are packaged and uploaded to a background after the sensor data are received within a regular reporting time T3, the background is waited to receive the reply, if the background replies within a T4 time, the intelligent communication terminal stores the received reply data, the reply data comprise frequency and threshold parameters, the intelligent communication terminal enters a sleep mode after the data are stored, the data replied by the background are issued when the data are reported by the sensor at the next time, the frequency of the intelligent communication terminal is modified, if the data are not replied within a T4 time, the intelligent communication terminal also enters the sleep mode, and the threshold and the frequency parameters are not changed;
and (4) reporting the exception: the intelligent communication terminal enters an operation mode every T2 time, regularly detects whether sensor data are received or not, replies after receiving the data, receives abnormal reporting time T3 of the sensor data, does not report if the abnormal data do not exist, enters a sleep mode, packages and sends the received data to a background if the abnormal data exist, waits for receiving the background reply, stores the received reply data if the background replies within T4 time, contains frequency and threshold parameters in the reply data, enters the sleep mode after the storage is finished, sends down the data replied by the background when the sensor reports the data regularly next time, modifies the frequency of the intelligent communication terminal, and enters the sleep mode if the abnormal data do not exist within T4 time, and the threshold and the frequency parameters are not changed.
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