CN211878248U

CN211878248U - Optical cable joint box monitoring device based on NB technology

Info

Publication number: CN211878248U
Application number: CN202020321123.6U
Authority: CN
Inventors: 尹宝林; 张�浩; 王胜贤; 于超
Original assignee: Jinan Chihao Electric Power Technology Co ltd
Current assignee: Jinan Chihao Electric Power Technology Co ltd
Priority date: 2020-03-14
Filing date: 2020-03-14
Publication date: 2020-11-06
Anticipated expiration: 2030-03-14

Abstract

The utility model relates to an automatic monitoring technology field of electric power system, concretely relates to optical cable splice closure monitoring devices based on NB technique, including power supply circuit, communication module, temperature and humidity sensor, photosensitive sensor, triaxial acceleration of gravity sensor and analog quantity gating circuit, analog quantity gating circuit adopts analog switch to realize, the communication module is the NB-IoT module that supports opencpu mode and GNSS positioning system, temperature and humidity sensor, triaxial acceleration of gravity sensor and photosensitive sensor all are connected with the communication module electrically, the communication module still is provided with the SIM card, and the communication module carries out communication connection with terminal equipment through network platform; the NB-IoT has the advantages of strong signal, wide coverage, low power consumption, low cost and the like, and solves the problems of unstable wireless communication, complex networking mechanism, easy disconnection and the like in the prior art.

Description

Optical cable joint box monitoring device based on NB technology

Technical Field

The utility model relates to an automatic monitoring technology field of electric power system, concretely relates to optical cable splice box monitoring devices based on NB technique.

Background

The reliability of power communication is the safe, stable and efficient guarantee of a power grid system, the particularity of power communication services determines that the communication must have timeliness, accuracy and reliability, and the power communication is directly related to the safe operation of the power grid. Communication optical cable interruption is a main problem influencing electric power communication, and in optical cable connection, when an optical cable is interrupted due to problems, 80% of the conditions are that a joint box is fixed or the optical cable is damaged by external force to cause optical cable faults, and especially, the joint box at an optical cable T-joint position and a three-span position has problems, so that the serious consequence of optical cable interruption can be caused.

The main problems facing today are: the inspection is difficult, and the problems are difficult to find and process if the joint box has the problems; the number is large, the number of the optical cable joint boxes in the communication network is large, the distribution is wide, and the operation and maintenance personnel can hardly perform comprehensive inspection on the joint boxes; utilize 4G + GPS communication mode to monitor the splice box, with high costs, the consumption is high, is difficult to satisfy outdoor equipment long-term operation, will bring huge difficulty for the equipment maintenance.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the shortcoming of prior art is overcome, through inside humiture and the luminous intensity of monitoring splice box, the horizontal inclination of monitoring splice box changes, judges through a plurality of state quantity integrated analysis, realizes early warning in advance, with troubleshooting before the optical cable breaks, provides one kind simultaneously and can guarantee that signal transmission is stable, need not to lay the optical cable splice box monitoring devices based on NB technique of communication line again, satisfies low-power consumption, low-cost demand.

The utility model discloses a solve the technical scheme that its technical problem adopted and do: optical cable splice box monitoring devices based on NB technique includes power supply circuit, communication module, watchdog, temperature and humidity sensor, photosensitive sensor, triaxial acceleration of gravity sensor. The power supply is a power type lithium sub-battery and a peripheral circuit thereof, the module is an NB-IoT module supporting an opencpu mode and a GNSS positioning system, the watchdog, the temperature and humidity sensor, the three-axis gravity acceleration sensor and the photosensitive sensor are all connected with the module, the module is also provided with an SIM card, and the module is in communication connection with the terminal equipment through the network platform.

The utility model discloses a temperature and humidity sensor carries out humiture and gathers, carries out the light intensity monitoring through photosensitive sensor, gates the sampling through analog switch and gives the module with data transmission, and triaxial acceleration of gravity sensor can monitor X, Y, Z axle coordinates, carries out data interaction through IIC communication and module; the module supports an opencpu mode and is internally provided with a GNSS positioning system, so that direct programming in the module is realized, a CPU and a GNSS positioning module do not need to be additionally configured, and power consumption and cost are reduced. The module is awaken up at regular time through the RTC, a dog feeding signal is output and networking is carried out, the received detection data are uploaded to the network platform after the networking is successful, the detection data are sent to the terminal equipment used by the user through the network platform, and then data information is displayed for the user.

The power supply circuit comprises a power supply and a power supply circuit, wherein the power supply is a 6.5AH lithium-sulfurous acid chloride battery, the nominal voltage of the power supply is 3.6V, and the power supply circuit comprises a switch, a transient suppression diode and a plurality of capacitors which are connected in parallel.

The module is an NB-IoT module supporting an opencpu mode and a GNSS positioning system.

The temperature and humidity sensor is an analog quantity sensor and is connected with the analog switch through a signal conditioning circuit, and the photosensitive sensor is connected with the analog switch through the signal conditioning circuit.

The analog switch is connected with an ADC port of the module and carries out sampling by gating different channels.

And the three-axis gravity acceleration sensor is connected with an IO port of the module and is communicated in an IIC simulation mode.

The module is connected with a debugging module.

The network platform comprises an onenet platform which is in communication connection with the terminal equipment through the main station.

Compared with the prior art, the utility model discloses following beneficial effect has:

1) the NB-IoT has the advantages of strong signal, wide coverage, low power consumption, low cost and the like, and solves the problems of unstable wireless communication, complex networking mechanism, easy disconnection and the like in the prior art;

2) the wireless communication can solve the problem of troublesome construction of wired communication;

3) the lithium battery is directly used for supplying power, external power taking is not needed, and the problem of difficulty in power taking on site is solved;

4) the design of low power consumption, long service life, no need of regular maintenance, and reduced maintenance cost;

5) the built-in GNSS positioning can quickly position the hidden trouble of the fault;

6) the information is pushed through the user terminal equipment, so that the method is fast and convenient.

Drawings

Fig. 1 is a block diagram of the present invention.

Fig. 2 is a circuit diagram of the power supply circuit of the present invention.

Fig. 3 is the sensor power supply control circuit of the present invention.

Fig. 4 is the connection circuit diagram of the temperature and humidity sensor and the photosensitive sensor of the present invention.

Fig. 5 is the analog gating circuit of the present invention.

Fig. 6 is the connection circuit diagram of the three-axis gravity acceleration sensor of the present invention.

Fig. 7 is a circuit diagram of the watchdog of the present invention.

Detailed Description

The embodiments of the present invention will be further described with reference to the accompanying drawings:

examples

As shown in fig. 1 to 7, the optical cable splice closure monitoring device based on the NB technology includes a power supply circuit, a communication module, a watchdog, a temperature and humidity sensor, a photosensitive sensor, and a three-axis gravity acceleration sensor. The power supply is a power type lithium sub-battery and a peripheral circuit thereof, the module is an NB-IoT module supporting an opencpu mode and a GNSS positioning system, the watchdog, the temperature and humidity sensor, the three-axis gravity acceleration sensor and the photosensitive sensor are all connected with the module, the module is also provided with an SIM card, and the module is in communication connection with the terminal equipment through the network platform.

The power circuit comprises a power switch and a power supply circuit, wherein the power switch is used for discharging the electric quantity of the capacitor after the power switch is switched on and off. As shown in fig. 2, since the instantaneous current is large during rf transmission, a large capacitor needs to be connected in parallel to the power supply circuit. Due to the low-power-consumption operation of the equipment, when the equipment is shut down, the electric quantity of the capacitor cannot be consumed, so that the circuit is grounded through the resistor R5 after the power supply is required to be shut down, and electric energy is discharged. The power supply was a 6.5AH power type lithium-thionyl chloride cell with a nominal voltage of 3.6V. The working voltage can keep obvious stability in the whole service life, can be directly supplied, does not need level conversion, and the power type battery can meet the instantaneous heavy current power supply of radio frequency connection.

The power supply circuit comprises a transient diode and a plurality of capacitors which are connected in parallel. As shown in fig. 2, the power supply circuit of this embodiment adopts transient diodes and 4 capacitors connected in parallel, the capacitor C6 plays a role in storing energy, and ensures the stability of the power supply when the device is networked and transmits data, the capacitors C7, C8 and C9 are used for filtering out high-frequency noise, and the transient diodes are used for preventing static electricity from entering the circuit and causing damage.

The sensor power supply control circuit is used for controlling a power supply of the sensor, supplying power when in use and meeting the requirement of low power consumption, as shown in figure 3, the control circuit is realized by controlling a PMOS (P-channel metal oxide semiconductor) tube through an NPN (negative-positive-negative) type triode, when IO (input/output) outputs low level, the triode is conducted, and an MOS (metal oxide semiconductor) tube V is connected_GS<0, conducting the MOS tube to supply power to the sensor; the reference source circuit consists of TL431 and peripheral circuits thereof, outputs stable 2.5V by matching R24, C19 and C20, is used for providing reference for the temperature sensor and the photosensitive sensor and realizes accurate measurement.

The temperature and humidity sensor is an analog quantity sensor, the photosensitive sensor is a photosensitive diode, and as shown in fig. 4, humidity sampling enters a U7 operational amplifier through an RC filter circuit of R32 and C21 after being subjected to voltage division by R30 and R31, and then enters an analog switch; the temperature sampling is similar, the temperature sensor is an NTC thermistor, and the reference source voltage enters the analog switch after being subjected to voltage division, filtering and following through the temperature sensor; the reference source voltage passes through the photosensitive sensor, is divided by R27 and R28, and enters the analog switch.

The analog quantity gating circuit is realized by using an analog switch, the chip is a dual-channel four-way analog switch, as shown in fig. 5, C26 is a filter capacitor of a chip power supply, one end of the chip is connected with an analog quantity input, one end of the chip is connected with an ADC sampling port of the module, AD0 and AD1 are connected to an IO port of the module, input channels are switched through different level states, and sampling of multiple paths of analog signals is realized.

And the triaxial gravity acceleration sensor is connected with the IO port of the module and is communicated in an IIC simulation mode. As shown in fig. 6, in this embodiment, a signal of the temperature sensor is ADXL345, an SCL pin of the sensor is connected to a pull-up resistor R25 of 5.1k Ω, an SDA pin is connected to a pull-up resistor R26 of 5.1k Ω, the sensor is in a sleep state when not operating, is waken up to collect temperature and humidity during operation, and enters the sleep state after the collection is completed and data is sent to the module.

The module is connected with a debugging module. As shown in FIG. 7, this embodiment adopts the watchdog that the model is TPL5010, the utility model discloses longest sleep time is 99min, and the watchdog is connected with 160K omega's standard resistance R16, feeds the dog maximum time and sets up to 105min, and R16 shunt resistance R17 is used when debugging the device system.

The network platform comprises an onenet platform which is in communication connection with the terminal equipment through the main station. When the module is cold started, carry out feeding dog and networking operation, after the networking is successful, the analog quantity collection that humiture, light intensity were gathered will be carried out, gather the data that accomplish the back and read triaxial gravitational acceleration sensor through the IIC, then carry out relevant warning judgement, last upload to onent platform with the data that detect, after data transmission succeeds, the module gets into the dormant state, wait to awaken up, set time after awakening up, the detection data that receive need not networking operation can directly send to onent platform, after sending successfully, the module gets into the dormant state again, wait to awaken up. And after receiving the detection data, the Onenet informs the main station to update the data, and after acquiring the data from the platform, the main station pushes the data to the terminal equipment of the user to display the data to the user.

The computer program that the utility model function depends on belongs to the technology known by the technicians in this field, and does not relate to the improvement of the program.

Claims

1. The utility model provides an optical cable splice box monitoring devices based on NB technique, its characterized in that, includes power supply circuit, communication module, temperature and humidity sensor, photosensitive sensor, triaxial acceleration of gravity sensor and analog quantity gating circuit, and analog quantity gating circuit adopts analog switch to realize, the communication module is for supporting opencpu mode and GNSS positioning system's NB-IoT module, temperature and humidity sensor, triaxial acceleration of gravity sensor and photosensitive sensor all with communication module electric connection, the communication module still is provided with the SIM card, and the communication module carries out communication connection through network platform and terminal equipment.

2. The NB technology-based cable closure monitoring device of claim 1, wherein the power circuit includes a power source and a power supply circuit, the power source is a 6.5AH lithium-sulfurous acid chloride battery, and the power supply circuit includes a switch and a transient suppression diode and a plurality of capacitors connected in parallel.

3. The NB-technology-based cable closure monitoring device of claim 1, wherein the temperature and humidity sensor is an analog sensor and is connected to an analog switch through a signal conditioning circuit, and the photosensitive sensor is connected to the analog switch through the signal conditioning circuit.

4. The NB technology based cable closure monitoring device of claim 1 or claim 3, wherein the analog switch is connected to an ADC port of the communications module and samples are taken by gating different channels.

5. The NB technology based optical cable splice enclosure monitoring device of claim 1, wherein the triaxial acceleration of gravity sensor is connected to an IO port of a communications module and communicates via an analog IIC scheme.

6. The NB-technology-based cable closure monitoring device of claim 1, wherein a debugging module is connected to the communication module.

7. The NB technology based cable closure monitoring apparatus of claim 1, wherein the network platform comprises an onenet platform, and the onenet platform is communicatively connected to the terminal device via the master station.