CN114501509A - NB-IoT + 5G-based network and power supply state detection and reporting system and method - Google Patents
NB-IoT + 5G-based network and power supply state detection and reporting system and method Download PDFInfo
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Abstract
The invention provides a network and power supply state detection and reporting system and a method thereof based on NB-IoT +5G, which are characterized by comprising the following modules: the main power input end of the power supply module is 220V commercial power; the intelligent power supply module is a circuit and network module which integrates IPC power supply, network cable forwarding and intelligent monitoring; the input module of the external network comprises a router or a light cat; the power-receiving IPC terminal module supports a monitoring device powered by a network port 5/8 or 4/7 pin; and the monitoring module is used for managing the real-time monitoring data of the power supply terminal in a centralized manner. The invention adopts the composite communication scheme that NB-IoT +5G is used as the monitoring unit, avoids the problem that other wireless communication needs to additionally deploy a relay gateway or a base station, and simplifies the investment of system deployment and maintenance; the method has the advantage of wide and deep coverage, and realizes signal access in the maximum range.
Description
Technical Field
The invention relates to the technical field of 5G, NB-IoT wireless communication and Internet of things, in particular to the field of circuit design of power supply conversion, real-time monitoring of power receiving equipment and on-off of an upper link and a lower link of a network, and specifically relates to a NB-IoT + 5G-based network and power supply state detection and reporting system and method.
Background
The existing ethernet class 5 and class 6 twisted pair wiring infrastructure is not changed at all, and can not provide sufficient operation and maintenance supervision for some network terminal devices while transmitting data signals for the devices. Even if the POE technology is added, the normal operation of the existing network cannot be perfectly supervised while the safety of the existing structured wiring is ensured. The conventional POE scheme includes two parts, namely, a Power Sourcing Unit (PSU) and a Power receiving Unit (PU). When the system fails, it is difficult to distinguish the reason of the power supply end, the power receiving end or the POE itself. The monitoring system is often a simple problem, people need to be sent to check at home, and the problems of low operation and maintenance efficiency and high cost of the monitoring system are caused.
Most of the existing power supplies in the market do not provide the real-time operation monitoring function, and the method is characterized in that on the basis of the traditional power supply scheme, a Monitoring Unit (MU) is added in the method, the Unit comprises a circuit, network monitoring and NB-IoT +5G wireless communication functions, the real-time monitoring of the operation state of the power supply is realized through the MU Unit, and the monitoring result is reported to a monitoring operation and maintenance platform. The monitoring function of power supply and physical network on-off between the devices is innovatively increased, and meanwhile, the real-time remote monitoring of the running state of the devices is realized through the 5G and NB-IoT wireless networks. According to the scheme, NB-IoT +5G is selected as a communication mode, and the communication mode is based on the advantages that NB-IoT +5G has wide and deep signal coverage, low power consumption and low cost, wireless communication technologies such as Bluetooth and LoRa are distinguished, a user does not need to deploy a gateway or a base station, the wireless communication quality is stable and safe, and the communication reliability is guaranteed.
At present, the following situations often occur in the use process of monitoring equipment:
(1) the whole power supply system (power supply, network, monitoring) is abnormal, and the fault point of the part can not be quickly positioned, so that the problems of low after-sale service efficiency and high cost are caused.
(2) The monitoring scheme made by other schemes is complex, needs additional hardware, is complex to implement and deploy and has high cost.
(3) When a power failure occurs, the battery cannot be used as a disaster prevention power supply to work for a long time (more than 2 years).
Disclosure of Invention
The invention aims to provide a network and power supply state detection and reporting system based on NB-IoT +5G, so as to solve the problems in the background technology.
The invention adds a load sensing self-stabilizing power supply and a physical network judgment circuit, monitors the power supply and the network under the condition of not interfering the quality of the original power supply and the network, and realizes the real-time monitoring of the circuit and the network. Meanwhile, when the power supply is in use, the condition that the power supply of a mains supply fails, such as mains supply outage, mains supply non-access or the failure of a mains supply voltage reduction component, is considered, the MU can be automatically switched to an emergency dry battery power supply after the mains supply fails, and the MU can continue to work for more than 2 years by using the low power consumption characteristic of NB-IoT +5G through battery power supply. When the mains supply is recovered, the MU can be automatically switched to the mains supply to supply power.
In order to achieve the purpose, the invention adopts the following technical scheme: the intelligent power supply system is based on an interference-free physical network to detect the states of a physical communication network and a circuit and report the states through a 5G Narrow Band (NB):
a network and power state detection and reporting system based on NB-IoT +5G is characterized by comprising the following modules: the intelligent power supply system comprises a power module, an intelligent power supply module, an input module of an external network, a power-receiving IPC terminal module, a monitoring module and a 5G routing function module; the main power input end of the power supply module is 220V; the intelligent power supply module is a circuit and network module which integrates IPC power supply, network cable forwarding and intelligent monitoring; the input module of the external network comprises a router or a light cat; the power-receiving IPC terminal module supports monitoring equipment powered by a network port 5/8 or 4/7pin, such as monitoring; the monitoring module is used for managing the real-time monitoring data of the power supply terminal in a centralized manner; the 5G routing function module provides a standby network for IPC when the external router is disconnected.
The intelligent power supply module comprises a power supply end unit (PSU), a power receiving end unit (PU) and a Monitoring Unit (MU); the power receiving end unit is used for being connected with commercial power, the commercial power is reduced to 48V, power is supplied to the power supply end unit, the voltage is reduced to 3.3V, and power is supplied to the monitoring unit; the power supply end unit connects pins 1, 2, 3 and 6Pin of the network cable inlet to the Pin corresponding to the output network port; a PU unit power supply is introduced to 5/8 and 4/7pin pins to supply power to a powered device, a high-low level signal with variable load is output, and a comparison circuit of a physical network outputs a network connection and disconnection trigger high-low level signal; the monitoring unit comprises an NB communication module which is responsible for data reporting and receiving data issued by the monitoring operation and maintenance platform, and the NB communication module is used as a monitoring logic calculation core and is used for processing power supply load change and high and low level signals triggered by the network comparison circuit;
through the organic combination of the PSU, the PU and the MU, the adopted monitoring scheme uses a load induction self-stabilizing power supply and a physical network judgment circuit technology to realize the following aims:
when the external power supply fails, the internal 3V dry battery is automatically switched to realize the normal work of the monitoring unit;
when the power supply of the powered device is switched on and off, the sensing circuit triggers high and low level signals, and the monitoring unit is informed through the IO port to master whether the powered device works in real time;
by establishing a physical network detection circuit, after a network link layer is connected, a high-low level signal can be output through a comparison circuit, and a monitoring module can master the network connection condition in real time;
when the external network is abnormal, the 5G network is automatically or remotely controlled to be switched;
the intelligent power supply module supplies power to the monitoring through 4/7 or 5/8pin pins of the network cable; when the monitoring equipment is connected, the monitoring equipment can be supplied with power, and meanwhile, the monitoring module is informed whether the monitoring equipment is started to work or not through IO port level change in the power supply.
The NB communication module is internally provided with an Open-MCU, is a signal processing center of the whole system, receives external power supply and PD access transmitted by the power supply unit and the network unit and network communication monitoring signals between the PSU and the PD, and transmits the signals to the monitoring operation and maintenance platform according to a predetermined state value; the external MCU is used as a logic operation center; processing real-time detection monitoring signals from the PSU unit and the MU unit, and sending the real-time detection monitoring signals to a monitoring operation and maintenance cloud platform according to a predefined communication protocol; the selected NB module is provided with a built-in Open-MCU, the Open-MCU is used for replacing an external MCU to serve as a logic operation center, signals from a circuit and a monitoring network in the dual-circuit power supply module and the PSU unit are processed, and then the signals are transmitted to a monitoring operation and maintenance cloud platform through NB-IoT according to the state codes converted into preset state codes; the circuit complexity of the MU unit is simplified and the BOM cost of the circuit is reduced by using the built-in Open-mcu, so that the whole scheme has cost advantage compared with a similar monitoring scheme; and an external MCU is removed, so that supervision, operation and maintenance of power supply hardware equipment can be better guaranteed.
The load sensing and circuit principle is as follows: +48V and CAM _ GND are network monitoring power supply input ports, and CAM _ INSERT is network monitoring access signal output; when the network monitor is accessed, due to the conduction voltage drop of the diode D1, the voltage at two ends of the resistor R3 is 0.7V, the triode Q1 is conducted, the current passes through the resistor R4 to the ground, no current passes through the resistor R18, and the triode Q2 is cut off, so that the output voltage of the CAM _ INSERT is + 3.3V; when the network monitor is pulled out, no current is input at the two ends of the resistor R3, the triode Q1 is cut off, at the moment, the current flows from the resistor R4 to the base electrode of the triode Q18 to the base electrode of the triode Q2, the triode Q2 is conducted, the CAM _ INSERT is equivalently grounded, and the output voltage is 0V.
The working state of the method comprises the following steps: whether the external power supply is normal; whether the power supply supplies power to monitoring equipment such as IPC and the like; a network link layer monitors whether the traffic is smooth or not from a front-end router to a back end;
no matter the monitoring module has or not external power source can normally work, realizes two electric power supplies, specifically does: monitoring 220V alternating current of an external power supply, and converting the alternating current into 3.3V direct current to supply power to a monitoring module under the condition that the power supply normally supplies power; when the 220V alternating current power supply is cut off, the power supply is automatically switched to the built-in 3V dry battery for power supply; the dual power supply is switched between a main power supply and a battery supply, wherein VCC _3V3D is used for supplying power to the main power supply, VCC _ BAT is used for supplying power to the battery, and VCC _ NB is used for supplying power to the monitoring module; when the power supply of the main power supply is abnormally cut off, the voltage of a resistor R7 and the grid electrode of the MOSFET is 0, the voltage of the grid electrode source of the MOSFET is greater than the conduction voltage drop, the drain electrode source of the MOSFET is conducted, and the power supply of the monitoring module is provided by the battery; when the main power supply is normally powered, the voltage of the resistor R7 and the grid electrode of the MOSFET is equal to the voltage of the main power supply, at the moment, the voltage of the MOSFET grid electrode source is smaller than the conduction voltage drop, the MOSFET drain source is cut off, and the monitoring module is powered by the main power supply.
The 5G routing function module is a CLM920 and is used for providing a routing function, and when an external network is abnormal, the routing function module can be automatically or controllably switched to the 5G network, so that IPC (Internet protocol Camera) can be ensured to normally work.
A network and power supply state detection and reporting method based on NB-IoT +5G is characterized in that: the method comprises the following steps:
s1: detecting whether the external power supply is normal;
s2: detecting whether a power supply supplies power to monitoring equipment such as IPC;
s3: a network link layer monitors whether the traffic is smooth or not from a front-end router to a back end;
s4: detecting the state of the power supply system, and then reporting the state to a monitoring operation and maintenance platform according to a preset state value of the system;
s5: the monitoring operation and maintenance cloud platform is combined with the monitoring management state and the data to quickly position and monitor fault points in abnormal states;
s6: the operation and maintenance platform subscribes the information of the mobile OneNet, timely acquires the state information reported by the power supply system, determines the current state and fault point of the monitoring equipment bound by a certain power supply according to the unique identification code of the equipment, and then timely takes corresponding measures through the operation and maintenance platform and operation and maintenance personnel.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts the composite communication scheme that NB-IoT +5G is used as the monitoring unit, avoids the problem that other wireless communication schemes such as Bluetooth, LoRa, wireless radio frequency and the like need to additionally deploy a relay gateway or a base station, and simplifies the investment of system deployment and maintenance. The NB-IoT is used as a part of the 5G network of the operator, so that the wide and deep coverage is realized, and the signal access in the maximum range is realized.
The invention designs 2 sets of power supplies for the monitoring unit, except 3.3V direct current provided by an intelligent power supply system, when an external power supply is not connected or a response device fails, the power supply system can still automatically switch to a dry battery to detect the failure, and a failure code is sent to the monitoring operation and maintenance platform through a W5110 module. And a double-power mode is adopted to deal with power failure.
Some NB-IoT devices commonly found in the market are common schemes that employ MCU + NB communication modules as monitoring units. The invention cooperates with a proprietary NB chip manufacturer, and replaces an external MCU with an open-MCU core built in the chip, thereby reducing the BOM cost and the production cost of the monitoring unit. Is completely self-controlled in home-made.
The power supply monitoring device can monitor whether the power supply end is connected and started. Once the plugging and unplugging are monitored, one path of high-low level signals can be triggered through the detection circuit, sent to the MU unit through the special IO interface and reported to the monitoring operation and maintenance cloud platform.
The invention can monitor whether the network link layer is smooth from the front end router to the back end through the comparison circuit, and simultaneously, the normal communication of the original network is not interfered. When the network link is disconnected or connected, a high-low level signal is triggered, sent to the MU unit through the proprietary IO port, and reported to the monitoring operation and maintenance cloud platform.
The invention adds a 5G network as a supplement to the basic network.
Drawings
FIG. 1 is a schematic diagram illustrating the structural connection of an NB-IoT + 5G-based network and power status detection and reporting system according to the present invention;
FIG. 2 is a block diagram of the functional units of the NB-IoT + 5G-based network and power status detection and reporting system of the present invention;
FIG. 3 is a dual circuit design diagram of a NB-IoT + 5G-based network and power state detection and reporting system according to the present invention;
FIG. 4 is a circuit diagram of a NB-IoT + 5G-based network and power state detection and reporting system load sensing circuit of the present invention;
FIG. 5 is a circuit diagram of a physical network judgment of the NB-IoT + 5G-based network and power state detection and reporting system of the present invention;
in the figure: A. a power source; B. an intelligent power supply; C. a 5G router; D. monitoring; E. monitoring the operation and maintenance platform; F. a smart power management cloud platform; a. an entrance net wire; b. an outlet network cable; c. commercial power; d. direct current; e. a network; f. monitoring the signal; g. an emergency battery; o, light cat; p, home fiber; q, a power supply controller; r, data transparent transmission and control interface.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the present invention belong to the scope of the present invention.
Examples
By establishing a detection circuit of a network inlet and a network outlet of the intelligent power supply, the invention monitors whether the network physical layers of the network inlet and the network physical layers of the network outlet of the power supply are communicated in real time under the condition of not interfering network communication, and simultaneously monitors the power supply condition of 5/8 pins and 4/7 pins of a network port of the power supply, and knows the power supply condition of a power supply system for monitoring the power supply condition of the lower end. And when the power supply and the network communication are changed, the changed condition is sent to the monitoring operation and maintenance platform through the NB-IoT, and a corresponding response is made in time according to a predefined flow. The method comprises the following specific steps:
(1) and monitoring 220V alternating current of an external power supply, and converting the alternating current into 3.3V direct current to supply power to the monitoring module under the condition that the power supply normally supplies power. When the 220V alternating current power supply is cut off, the power supply is automatically switched to the built-in 3V dry battery to supply power, and the monitoring module can work normally no matter whether an external power supply exists or not.
(2) The power system supplies power to the monitor through 4/7 or 5/8pin pins of the network cable. When the monitoring is accessed, the monitoring power supply can be supplied, and meanwhile, the monitoring module is informed whether the monitoring is started or not through the level change of the IO port in the power supply system.
(3) A detection circuit is added from a network between an upstream router or an optical modem network port and IPC monitoring equipment, and by means of measures such as filtering isolation and the like, under the condition that a network inlet and a network outlet are connected, the detection circuit can monitor the on-off condition of the network in real time, inform a monitoring module MU through an IO port and report the network connection condition through NB-IOT.
(4) According to the scheme, an Open-MCU (micro control unit) arranged in an NB (NB) module is used as a signal processing center of the whole system, and is used for receiving signals such as an external power supply transmitted by a power supply unit and a network unit, PD access, network communication monitoring between a PSU (Power system unit) and a PD (Power distribution Unit) and sending the signals to a monitoring operation and maintenance platform according to a predetermined state value.
(5) And after the external power supply, the monitoring power supply, the upstream and downstream communication state of the network and the change of the electric quantity of the standby battery built in the intelligent power supply system are carried out, the electric quantity is sent to the monitoring operation and maintenance platform through NB-IoT according to a predetermined value. Under the circumstances of outage, can not receive the influence of former wisdom electrical power generating system external power source, start the dry battery power supply in the MU unit, rely on the built-in RTC clock of NB module to awaken up the NB module, regularly patrol and examine the control mouth on the MU unit, finally reach the control operation and maintenance platform to information such as mains supply trouble through removing the OneNet platform.
(6) The monitoring operation and maintenance platform timely acquires state information reported by a power supply system by subscribing the information of the mobile OneNet, positions the current state and fault point of a monitoring device bound by a certain power supply according to the unique identification code of the device contained in the information, informs operation and maintenance personnel through the operation and maintenance management cloud platform, and timely takes corresponding measures to handle the abnormal situation. The monitoring and alarming process is automatic, the timeliness of the service is greatly improved, and the efficient operation of the monitoring system is guaranteed.
As shown in fig. 1, a NB-IoT + 5G-based network and power status detection and reporting system includes the following modules: the intelligent power supply system comprises a power module, an intelligent power supply module, an input module of an external network, a power-receiving IPC terminal module, a monitoring module and a 5G routing function module; the main power input end of the power supply module is 220V; the intelligent power supply module is a circuit and network module which integrates IPC power supply, network cable forwarding and intelligent monitoring; the input module of the external network comprises a router or a light cat; the power-receiving IPC terminal module supports monitoring equipment powered by a network port 5/8 or 4/7pin, such as monitoring; the monitoring module is used for managing the real-time monitoring data of the power supply terminal in a centralized manner; the 5G routing function module provides a standby network for IPC when the external router is disconnected.
As shown in fig. 2, the intelligent power supply module includes three functional units, namely, a Power Supply Unit (PSU), a power receiving unit (PU), and a Monitoring Unit (MU); the power receiving end unit is used for being connected with commercial power, the commercial power is reduced to 48V, power is supplied to the power supply end unit, the voltage is reduced to 3.3V, and power is supplied to the monitoring unit; the power supply end unit connects pins 1, 2, 3 and 6Pin of the network cable inlet to the Pin corresponding to the output network port; a PU unit power supply is introduced to 5/8 and 4/7pin pins to supply power to a powered device, a high-low level signal with variable load is output, and a comparison circuit of a physical network outputs a network connection and disconnection trigger high-low level signal; the monitoring unit comprises an NB communication module which is responsible for data reporting and receiving data issued by the monitoring operation and maintenance platform, and the NB communication module is used as a monitoring logic calculation core and is used for processing power supply load change and high and low level signals triggered by the network comparison circuit.
The NB communication module is internally provided with an Open-MCU, is a signal processing center of the whole system, receives external power supply and PD access transmitted by the power supply unit and the network unit and network communication monitoring signals between the PSU and the PD, and transmits the signals to the monitoring operation and maintenance platform according to a predetermined state value; the external MCU is used as a logic operation center; processing real-time detection monitoring signals from the PSU unit and the MU unit, and sending the real-time detection monitoring signals to a monitoring operation and maintenance cloud platform according to a predefined communication protocol; the selected NB module is provided with a built-in Open-MCU, the Open-MCU is used for replacing an external MCU to serve as a logic operation center, signals from a circuit and a monitoring network in the dual-circuit power supply module and the PSU unit are processed, and then the signals are transmitted to a monitoring operation and maintenance cloud platform through NB-IoT according to the state codes converted into preset state codes; the circuit complexity of the MU unit is simplified and the BOM cost of the circuit is reduced by using the built-in Open-mcu, so that the whole scheme has cost advantage compared with a similar monitoring scheme; and an external MCU is removed, so that supervision, operation and maintenance of power supply hardware equipment can be better guaranteed.
The load sensing and circuit principle is as follows: +48V and CAM _ GND are network monitoring power supply input ports, and CAM _ INSERT is network monitoring access signal output; when the network monitor is accessed, due to the conduction voltage drop of the diode D1, the voltage at two ends of the resistor R3 is 0.7V, the triode Q1 is conducted, the current passes through the resistor R4 to the ground, no current passes through the resistor R18, and the triode Q2 is cut off, so that the output voltage of the CAM _ INSERT is + 3.3V; when the network monitor is pulled out, no current is input at the two ends of the resistor R3, the triode Q1 is cut off, at the moment, the current flows from the resistor R4 to the base electrode of the triode Q18 to the base electrode of the triode Q2, the triode Q2 is conducted, the CAM _ INSERT is equivalently grounded, and the output voltage is 0V.
The working state of the method comprises the following steps: whether the external power supply is normal; whether the power supply supplies power to monitoring equipment such as IPC and the like; a network link layer monitors whether the traffic is smooth or not from a front-end router to a back end;
detecting the state of the power supply system, and then reporting the state to a monitoring operation and maintenance platform according to a preset state value of the system; the monitoring operation and maintenance cloud platform can quickly locate and monitor fault points in abnormal states by combining the monitoring management states and the data; the operation and maintenance platform subscribes the information of the mobile OneNet, timely acquires the state information reported by the power supply system, determines the current state and fault point of the monitoring equipment bound by a certain power supply according to the unique identification code of the equipment, and then timely takes corresponding measures through the operation and maintenance platform and operation and maintenance personnel.
No matter the monitoring module has or not external power source can normally work, realizes two electric power supplies, specifically does: monitoring 220V alternating current of an external power supply, and converting the alternating current into 3.3V direct current to supply power to a monitoring module under the condition that the power supply normally supplies power; when the 220V alternating current power supply is cut off, the power supply is automatically switched to a built-in 3V dry battery for supplying power; the dual power supply is switched between a main power supply and a battery supply, wherein VCC _3V3D is used for supplying power to the main power supply, VCC _ BAT is used for supplying power to the battery, and VCC _ NB is used for supplying power to the monitoring module; when the power supply of the main power supply is abnormally cut off, the voltage of a resistor R7 and the grid electrode of the MOSFET is 0, the voltage of the grid electrode source of the MOSFET is greater than the conduction voltage drop, the drain electrode source of the MOSFET is conducted, and the power supply of the monitoring module is provided by the battery; when the main power supply is normally powered, the voltage of the resistor R7 and the grid electrode of the MOSFET is equal to the voltage of the main power supply, at the moment, the voltage of the MOSFET grid electrode source is smaller than the conduction voltage drop, the MOSFET drain source is cut off, and the monitoring module is powered by the main power supply.
The 5G routing function module is a CLM920 and is used for providing a routing function, and when an external network is abnormal, the routing function module can be automatically or controllably switched to the 5G network, so that IPC (Internet protocol Camera) can be ensured to normally work.
The function lists of the PSU, PU, MU units are as follows:
through the organic combination of the PSU, the PU and the MU, the adopted monitoring scheme uses a load induction self-stabilizing power supply and a physical network judgment circuit technology to realize the following aims:
a. when the external power supply fails, the internal 3V dry battery is automatically switched to, and the monitoring unit still normally works.
b. When the power supply of the powered device is switched on and off, the sensing circuit can trigger high and low level signals, and the monitoring unit is informed through the IO port to master whether the powered device works in real time.
c. By establishing the physical network detection circuit, after the network link layer is connected, the comparison circuit can output high and low level signals, and the monitoring module can master the network connection condition in real time.
d. When the external network is abnormal, the 5G network is automatically or remotely controlled switched.
The power supply and network operation state data collected by the MU are defined as the following table:
| parameter name | Type (B) | Must fill in | Description of the invention |
| imei | String | Is that | Unique identification number (UID) of the device |
| powerType | Int | Is that | Power supply type 1, |
| Battery | Int | Is that | Residual battery capacity mv |
| powerLevel | Int | Is that | Electric quantity grade 1, normal 2, over-low 3 and extremely low |
| statusHConn | Int | Is that | Physical connection 1. Normal 2. abnormal |
| statusPower220 | Int | Is that | 220V State 1, |
| statusPower48 | Int | Is that | 48V State 1, |
| statusPower33 | Int | Is that | 3.3V State 1. Normal 2. Exception |
| statusCameraPower | Int | Is that | Monitoring power supply 1, normal 2, abnormal |
The data collected by the MU unit for the communication module is defined as follows:
the monitoring operation and maintenance platform receives the system state and NB communication state data reported by the MU unit, and realizes real-time monitoring of the system operation state according to the data, thereby greatly improving the operation and maintenance efficiency of the monitoring system.
In this embodiment, the system operating status includes: 1) whether the external power supply is normal; 2) whether the power supply supplies power to monitoring equipment such as IPC and the like; 3) the network link layer monitors whether the traffic is smooth from the front-end router to the back-end.
And respectively detecting the state of the power supply system according to the three aspects, and then reporting the state to the monitoring operation and maintenance platform according to a state value preset by the system. The monitoring operation and maintenance cloud platform can be combined with the monitoring management state and the data, and can be used for rapidly positioning and monitoring fault points in abnormal states. The operation and maintenance platform subscribes the information of the mobile OneNet, timely acquires the state information reported by the power supply system, determines the current state and fault point of the monitoring equipment bound by a certain power supply according to the unique identification code of the equipment, and then timely takes corresponding measures through the operation and maintenance platform and operation and maintenance personnel, so that the labor input of operation and maintenance is reduced, the timeliness of service is improved, and the normal operation of the monitoring system is guaranteed.
The specific implementation content is as follows:
and monitoring 220V alternating current of an external power supply, and converting the alternating current into 3.3V direct current to supply power to the monitoring module under the condition that the power supply normally supplies power. When the 220V alternating current power supply is cut off, the power supply is automatically switched to the built-in 3V dry battery for power supply, so that the monitoring module can normally work no matter whether an external power supply exists or not, and double-power supply is realized.
The schematic diagram of the dual circuit design is as follows: the intelligent power supply monitoring module is used for realizing mutual switching between a main power supply and battery power supply. VCC _3V3D is used for supplying power to a main power supply, VCC _ BAT is used for supplying power to a battery, and VCC _ NB is used for supplying power to a monitoring module; when the power supply of the main power supply is abnormally cut off, the voltage of a resistor R7 and the grid electrode of the MOSFET is 0, the voltage of the grid electrode source of the MOSFET is greater than the conduction voltage drop, the drain electrode source of the MOSFET is conducted, and the power supply of the monitoring module is provided by the battery; when the main power supply is normally powered, the voltage of the resistor R7 and the grid electrode of the MOSFET is equal to the voltage of the main power supply, at the moment, the voltage of the MOSFET grid electrode source is smaller than the conduction voltage drop, the MOSFET drain source is cut off, and the monitoring module is powered by the main power supply. Thus, the mutual switching between the main power supply and the battery power supply is realized. As shown in fig. 3.
The intelligent power supply system supplies power to the monitor through 4/7pin or 5/8pin of the network cable. When the monitoring equipment is connected, the monitoring equipment can be supplied with power, and meanwhile, the monitoring module is informed whether the monitoring equipment is started to work or not through IO port level change in the power supply.
The design schematic diagram of the load sensing circuit is as follows, wherein +48V and CAM _ GND are network monitoring power supply input ports, and CAM _ INSERT is network monitoring access signal output; when the network monitor is accessed, due to the conduction voltage drop of the diode D1, the voltage at two ends of the resistor R3 is 0.7V, the triode Q1 is conducted, the current passes through the resistor R4 to the ground, no current passes through the resistor R18, and the triode Q2 is cut off, so that the output voltage of the CAM _ INSERT is + 3.3V; when the network monitor is pulled out, no current is input at the two ends of the resistor R3, the triode Q1 is cut off, at the moment, the current flows from the resistor R4 to the base electrode of the triode Q18 to the base electrode of the triode Q2, the triode Q2 is conducted, the CAM _ INSERT is equivalently grounded, and the output voltage is 0V. As shown in fig. 4.
A detection circuit is added from an upstream router or an optical modem network port and a physical network between monitoring, through measures such as filtering isolation and the like, under the condition that a network inlet and a network outlet are connected, the detection comparison circuit can detect the on-off condition of the network in real time, inform the monitoring circuit through an IO port, and report the connection condition of the physical network through a W5110 communication module.
The design schematic diagram of the physical network judgment circuit is as follows, wherein LINK is a network connection monitoring output signal, RX-and TX-are network cable input end interfaces of a power supply, and RX 1-and TX 1-are network cable output end interfaces of the power supply; when the input end and the output end network port of a power supply are normally connected, RX and RX are conducted, TX and TX1 are conducted, the positive electrode of the power supply voltage is input to pin 1 of a photoelectric coupler U1 and U2, meanwhile, pin 1 is connected to the ground of each power supply, pin 3 and pin 4 of the photoelectric coupler U1 and U2 are conducted, the common end of a resistor R6 and a resistor R8 is grounded, the base input current of a triode Q3 is 0A, the triode is in a cut-off state, and the output voltage of a LINK pin is VCC high level; when the network cable at any end of the POE interface is disconnected, the photoelectric coupler U1 or U2 is powered off, so that the photoelectric coupler U1 or U2 works in an off state, the resistors R6 and R8, the diode D2 and the base electrode of the triode Q3 form a power supply loop, the base electrode of the triode Q3 has input current, the triode Q3 is connected, the LINK pin is equivalent to grounding, and low level is output. As shown in fig. 5.
An Open-MCU built in the NB module is used as a signal processing center of the whole system, receives signals of an external power supply, PD access, network communication monitoring between a PSU and a PD and the like transmitted by a power supply unit and a network unit, and transmits the signals to a monitoring operation and maintenance platform according to a predetermined state value.
The selected NB module is provided with a built-in Open-MCU, the Open-MCU is used for replacing an external MCU to serve as a logic operation center of the proposal, signals from a circuit in the dual-circuit power supply module and the PSU unit and a monitoring network are processed, and then the signals are transmitted to a monitoring operation and maintenance cloud platform through NB-IoT according to a preset state code converted. The NB is internally provided with an open-MCU and an external MCU which are used as a logic operation center of the proposal, processes real-time detection monitoring signals from the PSU unit and the MU unit, and sends the real-time detection monitoring signals to a monitoring operation and maintenance cloud platform according to a predefined communication protocol.
The built-in Open-mcu is used, the circuit complexity of the MU unit is simplified, the cost of the BOM is reduced, and compared with a similar monitoring scheme, the whole scheme has cost advantage. And an external MCU is removed, so that supervision, operation and maintenance of power supply hardware equipment can be better guaranteed.
By utilizing the routing function provided by the 5G module CLM920, when the external network is abnormal, the external network can be automatically or controllably switched to the 5G network, so that the IPC can be ensured to normally work.
In this embodiment, a Monitoring Unit (MU) is added in addition to the power supply Unit and the power receiving Unit in the original power supply scheme. The main technology of the scheme is as follows:
1) the dual-power scheme is adopted to deal with power failure:
in the embodiment of the invention, 2 sets of power supplies are designed for the monitoring unit, except 3.3V direct current provided by the intelligent power supply system, when an external power supply is not connected or a response device fails, the power supply system can still automatically switch to a dry battery to detect the failure, and a failure code is sent to the monitoring operation and maintenance platform through the W5110 module.
2) An Open-MCU built in an NB module is used as a core logic operation center of the embodiment:
some NB-IoT devices commonly found in the market are common schemes that employ MCU + NB communication modules as monitoring units. The invention cooperates with a proprietary NB chip, and replaces an external MCU with an open-MCU core built in the chip, thereby reducing the BOM cost and the production cost of the monitoring unit. Is completely self-controlled in home-made.
3) This embodiment has increased power supply circuit detection circuitry:
the power monitoring can monitor whether the power end is connected and started. Once the plugging and unplugging are monitored, one path of high-low level signals can be triggered through the detection circuit, sent to the MU unit through the special IO interface and reported to the monitoring operation and maintenance cloud platform.
4) Network monitoring bypass pass comparison circuit
Through the comparison circuit, whether the network link layer is smooth or not from the front-end router to the back-end can be monitored, and meanwhile, the normal communication of the original network is not interfered. When the network link is disconnected or connected, a high-low level signal is triggered, sent to the MU unit through the proprietary IO port, and reported to the monitoring operation and maintenance cloud platform.
5) A 5G network is added as a complement to the underlying network.
In this embodiment, the main control MCU adopts a domestic customized SOC single chip solution, which has high integration level, extremely low power consumption, and completely independent intellectual property. The NB communication integrates the MODEM, the PA, the power management device, the Memory subsystem and the like on one SOC chip, the cost is saved, meanwhile, the system power consumption can be reduced, compared with the application mode of other discrete device schemes, the system current consumption in the OC scheme dormant state is reduced by about 7.5uA, the electric quantity of about 70mAh can be saved in one year, and the W5110 module group part can be singly calculated according to 10 years, so that the electric quantity can be saved by about 700 mAh. After being popularized in a large amount, the economic benefit brought to 5 hundred million domestic monitoring equipment by the energy saving, cost reduction and efficiency increase of human objects is immeasurable through effective operation and maintenance management.
The embodiment makes full use of mainstream Internet of things platforms such as group OneNet, truly realizes seamless docking, is convenient to monitor, and has remote FOTA upgrading capability.
The device accesses mobile OneNet according to the protocol LwM 2M.
OneNet provides a PasS platform as mobile, and has the advantages of reliability, stability and large concurrency number. The access of the PasS platform reduces the deployment threshold for the application of the Internet of things, and reduces the system maintenance workload.
OneNet platforms now have access to nearly 10 million terminals, of which there are thousands of varieties. The interconnection and intercommunication of the product and the devices are realized.
OneNet not only provides the equipment access service, but also provides resources such as pushing, alarming, AI calculation and the like, and realizes rich and colorful extended application.
The operation and maintenance platform greatly improves the current situation that the operation and maintenance is processed by manpower. The number of times of manual field maintenance is reduced, the supervision performance of manual service is improved, and the human resource distribution is more reasonable. The current situation that the huge amount of IPC is totally dependent on maintenance by a human team must be changed. The IPC operation and maintenance management must be gradually switched to a machine Ai from the former full manual work to judge faults and allocate field services so as to improve the service quality and the social and economic benefits.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the preferred embodiments of the invention and described in the specification are only preferred embodiments of the invention and are not intended to limit the invention, and that various changes and modifications may be made without departing from the novel spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A network and power state detection and reporting system based on NB-IoT +5G is characterized by comprising the following modules: the intelligent power supply system comprises a power module, an intelligent power supply module, an input module of an external network, a power-receiving IPC terminal module, a monitoring module and a 5G routing function module; the main power input end of the power supply module is 220V; the intelligent power supply module is a circuit and network module which integrates IPC power supply, network cable forwarding and intelligent monitoring; the input module of the external network comprises a router or a light cat; the power-receiving IPC terminal module supports a monitoring device powered by a pin of a network port 5/8 or 4/7; the monitoring module is used for managing the real-time monitoring data of the power supply terminal in a centralized manner; the 5G routing function module provides a standby network for IPC when the external router is disconnected.
2. The NB-IoT + 5G-based network and power state detection and reporting system in claim 1, wherein: the intelligent power supply module comprises a power supply end unit (PSU), a power receiving end unit (PU) and a Monitoring Unit (MU); the power receiving end unit is used for being connected with commercial power, the commercial power is reduced to 48V, power is supplied to the power supply end unit, the voltage is reduced to 3.3V, and power is supplied to the monitoring unit; the power supply end unit connects pins 1, 2, 3 and 6Pin of the network cable inlet to the Pin corresponding to the output network port; a PU unit power supply is introduced to 5/8 and 4/7pin pins to supply power to a powered device, a high-low level signal with variable load is output, and a comparison circuit of a physical network outputs a network connection and disconnection trigger high-low level signal; the monitoring unit comprises an NB communication module which is responsible for data reporting and receiving data issued by the monitoring operation and maintenance platform, and the NB communication module is used as a monitoring logic calculation core and is used for processing power supply load change and high and low level signals triggered by the network comparison circuit;
through the organic combination of the PSU, the PU and the MU, the adopted monitoring scheme uses a load induction self-stabilizing power supply and a physical network judgment circuit technology to realize the following aims:
when the external power supply fails, the internal 3V dry battery is automatically switched to realize the normal work of the monitoring unit;
when the power supply of the powered device is switched on and off, the sensing circuit triggers high and low level signals, and the monitoring unit is informed through the IO port to master whether the powered device works in real time;
by establishing a physical network detection circuit, after a network link layer is connected, a high-low level signal can be output through a comparison circuit, and a monitoring module can master the network connection condition in real time;
when the external network is abnormal, the 5G network is automatically or remotely controlled to be switched;
the intelligent power supply module supplies power to the monitoring module through 4/7 or 5/8pin of a network cable; when the monitoring equipment is connected, the monitoring equipment can be supplied with power, and meanwhile, the monitoring module is informed whether the monitoring equipment is started to work or not through the level change of the IO port in the power supply.
3. The NB-IoT +5G based network and power supply status detection and reporting system as claimed in claim 3, wherein: the NB communication module is internally provided with an Open-MCU, is a signal processing center of the whole system, receives external power supply and PD access transmitted by the power supply unit and the network unit and network communication monitoring signals between the PSU and the PD, and transmits the signals to the monitoring operation and maintenance platform according to a predetermined state value; the external MCU is used as a logic operation center; processing real-time detection monitoring signals from the PSU unit and the MU unit, and sending the real-time detection monitoring signals to a monitoring operation and maintenance cloud platform according to a predefined communication protocol; the selected NB module is provided with a built-in Open-MCU, the Open-MCU is used for replacing an external MCU to serve as a logic operation center, signals from a circuit and a monitoring network in the dual-circuit power supply module and the PSU unit are processed, and then the signals are transmitted to a monitoring operation and maintenance cloud platform through NB-IoT according to the state codes converted into preset state codes.
4. The NB-IoT + 5G-based network and power state detection and reporting system in claim 1, wherein: no matter the monitoring module has or not external power source can normally work, realizes two electric power supplies, specifically does: monitoring 220V alternating current of an external power supply, and converting the alternating current into 3.3V direct current to supply power to a monitoring module under the condition that the power supply normally supplies power; when the 220V alternating current power supply is cut off, the power supply is automatically switched to the built-in 3V dry battery for power supply; the dual power supply is switched between a main power supply and a battery supply, wherein VCC _3V3D is used for supplying power to the main power supply, VCC _ BAT is used for supplying power to the battery, and VCC _ NB is used for supplying power to the monitoring module; when the power supply of the main power supply is abnormally cut off, the voltage of a resistor R7 and the grid electrode of the MOSFET is 0, the voltage of the grid electrode source of the MOSFET is greater than the conduction voltage drop, the drain electrode source of the MOSFET is conducted, and the power supply of the monitoring module is provided by the battery; when the main power supply is normally powered, the voltage of the resistor R7 and the grid electrode of the MOSFET is equal to the voltage of the main power supply, at the moment, the voltage of the MOSFET grid electrode source is smaller than the conduction voltage drop, the MOSFET drain source is cut off, and the monitoring module is powered by the main power supply.
5. The NB-IoT + 5G-based network and power state detection and reporting system in claim 1, wherein: the 5G routing function module is a CLM920 and is used for providing a routing function, and when an external network is abnormal, the routing function module can be automatically or controllably switched to the 5G network to ensure the IPC to normally work.
6. A network and power supply state detection and reporting method based on NB-IoT +5G is characterized in that: the method comprises the following steps:
s1: detecting whether the external power supply is normal;
s2: detecting whether a power supply supplies power to monitoring equipment such as IPC;
s3: a network link layer monitors whether the traffic is smooth or not from a front-end router to a back end;
s4: detecting the state of the power supply system, and reporting the state to a monitoring operation platform according to a preset state value of the system;
s5: the monitoring operation and maintenance cloud platform is combined with the monitoring management state and the data to quickly position and monitor the fault point of the abnormal state;
s6: the operation and maintenance platform subscribes the information of the mobile OneNet, timely acquires the state information reported by the power supply system, determines the current state and fault point of the monitoring equipment bound by a certain power supply according to the unique identification code of the equipment, and then timely takes corresponding measures through the operation and maintenance platform and operation and maintenance personnel.
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