CN114167782A - Internet of things lockset for electric energy meter metering box - Google Patents
Internet of things lockset for electric energy meter metering box Download PDFInfo
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- G—PHYSICS
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- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
An Internet of things lockset for a metering box of an electric energy meter comprises the metering box of the electric energy meter and an electronic lock, wherein an MCU, an ESAM safety module, a Bluetooth module, a positioning module, an RS485 communication module and a power supply unit are installed in the metering box of the electric energy meter, and the electronic lock, the ESAM safety module, the Bluetooth module, the positioning module and the RS485 communication module are respectively connected to the MCU; the MCU can control the electronic lock to lock and unlock the box door of the electric energy meter metering box; the ESAM safety module can be matched with the MCU to realize the safety control of the locking and unlocking processes; the Bluetooth module can receive locking and unlocking commands of the mobile phone end; the positioning module can send the position information to the MCU; and the RS485 communication module is communicated with other equipment arranged in the electric energy meter metering box through an RS485 bus. The electric energy meter metering box is known, controllable and measurable, and information can be uploaded through the RS485 module for analysis.
Description
Technical Field
The invention relates to the technical field of electric energy meter measuring boxes, in particular to an internet of things lockset for an electric energy meter measuring box.
Background
The electric energy meter metering box is used as a key link in a power distribution network, is a protective shell of electric energy metering equipment, bears mass data of various electric power information, is a minimum unit for providing safe and reliable power supply service for hundreds of millions of residential customers and vast small and micro-industrial commercial users by a power grid enterprise, is a property dividing point between a power grid and user equipment, is an important barrier for safe and reliable power utilization of thousands of households, and is particularly important in operation safety, reliability and information utilization rate. However, the security sealing performance of the current metering box is limited, the electricity stealing prevention capability is poor, the condition that the entrance guard seal is damaged or lost occurs occasionally and cannot be reported actively, the operation and maintenance state of the entrance guard seal can only depend on manual inspection, the metering equipment has the hidden danger of abnormal opening and tampering, and the metering equipment cannot be found and processed in time. The operation environment of the metering box is complex and various, and the conditions such as temperature and humidity change, external force damage and illegal invasion cannot be monitored and controlled remotely on line. The conventional metering box is lack of effective technical means and data support in daily management, and the safety bearing function of the metering box is urgently required to be enhanced.
For example, the invention patent 201811600486.7 in china provides a multifunctional electric meter box intelligent lock system, which can verify the identity unlocking and has a communication function, but cannot sense, monitor and warn the environmental state of the electric meter metering box, and aiming at various problems existing in the electric meter metering box, an intelligent internet of things lock integrating the sensing, monitoring and warning technology of the equipment needs to be innovated and researched, so as to realize the on-line reliable management of the electric meter metering box door control and the real-time monitoring and warning of electricity stealing abnormity, thereby greatly reducing the existing workload of the management and operation and maintenance personnel of a distribution area, effectively improving the working efficiency and the data accuracy, and forcefully driving the distribution area to carry out the lean management of various work and go to a new step.
Disclosure of Invention
The invention aims to solve the problems and provides an internet of things lockset for an electric energy meter metering box. The intelligent monitoring system can realize the access control encryption management, the internal temperature and humidity monitoring, the inclination of the box body and the external force damage monitoring of the electric energy meter measuring box, strengthen and accurately monitor and deploy weak links on the side of the meter box, realize the known, controllable and measurable functions of the electric energy meter measuring box, and upload analysis information through the RS485 module to perform special data analysis.
The technical scheme of the invention is as follows:
an internet of things lockset for a metering box of an electric energy meter comprises the metering box of the electric energy meter and an electronic lock, wherein an MCU, an ESAM safety module, a Bluetooth module, a positioning module, an RS485 communication module and a power supply unit are installed in the metering box of the electric energy meter, and the electronic lock, the ESAM safety module, the Bluetooth module, the positioning module and the RS485 communication module are respectively connected to the MCU;
the MCU can control the electronic lock to lock and unlock the box door of the electric energy meter metering box;
the ESAM safety module can be matched with the MCU to realize the safety control of the locking and unlocking processes;
the Bluetooth module can receive locking and unlocking commands of the mobile phone end;
the positioning module can send the position information to the MCU;
the RS485 communication module is communicated with other equipment arranged in the electric energy meter metering box through an RS485 bus;
the MCU, the electronic lock, the ESAM safety module, the Bluetooth module, the positioning module and the RS485 communication module are all connected to a power supply interface of the power supply unit, and the voltage of the power supply interface is 5V.
According to the internet of things lock for the electric energy meter measuring box, the MCU adopts a chip model STM32L431VCT 6.
According to the internet of things lockset for the electric energy meter measuring box, the chip adopted by the ESAM safety module is SC1166Y, and the ESAM safety module is connected with the MCU through the SPI 2.
The lock for the metering box of the electric energy meter comprises an MCU, wherein the MCU comprises a plurality of GPIO interfaces, and the GPIO interfaces are connected with an electronic lock.
The utility model provides an thing allies oneself with tool to lock for electric energy meter metering box as above, orientation module is based on big dipper satellite navigation system, orientation module adopts the chip model to be ATGM336H, connect through UART interface 1 between orientation module and MCU.
As above-mentioned an thing allies oneself with tool to lock for electric energy meter metering box, other equipment in the electric energy meter metering box include multi-functional electric energy meter, RS485 communication module passes through RS485 bus communication with multi-functional electric energy meter, RS485 communication module adopts the chip model to be MAX485, be connected through UART interface 3 between RS485 communication module and MCU.
The utility model provides an thing allies oneself with tool to lock for electric energy meter measuring box as above, multi-functional electric energy meter has bluetooth function, bluetooth module can be connected and communicate with multi-functional electric energy meter, bluetooth module adopts the chip model to be N52832, bluetooth module and MCU are connected through UART interface 2 within a definite time.
The internet of things lockset for the electric energy meter measuring box further comprises a temperature and humidity sensor, wherein the temperature and humidity sensor adopts a chip with a DTH11 model, and is connected with the MCU through an I2C interface 1.
The internet of things lockset for the electric energy meter measuring box further comprises an acceleration sensor, wherein the acceleration sensor adopts a chip model of ADXL345, and is connected with the MCU through an SPI (serial peripheral interface) 1.
According to the internet of things lockset for the electric energy meter metering box, the power supply unit comprises a charge-discharge module, a direct-current power supply and a lithium battery, the direct-current power supply and the lithium battery are respectively connected with the charge-discharge module, and the charge-discharge module is provided with a power supply interface.
The invention has the beneficial effects that:
1. the invention discloses an internet of things lockset for an electric energy meter metering box, which can realize the safe digital control of unlocking the electric energy meter metering box based on an ESAM (electronic security access module) safety module, automatically generate the records of unlocking and locking, monitor abnormal behaviors such as illegal unlocking, electricity stealing and the like in real time and comprehensively improve the lean management level of a low-voltage transformer area.
2. The invention can monitor the environmental factors such as temperature, humidity and the like in the box body in real time, alarm in time when abnormal conditions are found, reduce the probability of accidents and reduce the loss caused by the accidents.
3. A positioning module is arranged in the mobile terminal, a fault event and a specific position are reported automatically, real-time map navigation is realized by matching with a navigation system, and active rush repair is carried out accurately.
4. The Bluetooth of the mobile phone is connected in a supporting way, a key is not needed, and the ESAM safety module is matched to realize easy and safe unlocking.
5. The lock can support and control a plurality of locksets, and the on-site operation and maintenance cost is reduced.
Drawings
The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.
In the drawings:
FIG. 1 is a schematic circuit diagram of an Internet of things lock for a metering box of an electric energy meter according to the present invention;
fig. 2 is a schematic diagram of an electric energy usage control strategy according to the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that these embodiments are provided so that this disclosure can be more completely understood and fully conveyed to those skilled in the art, and the present disclosure may be implemented in various forms without being limited to the embodiments set forth herein.
The directions "front and back", "left and right", etc. mentioned in the present invention are only used to express the relative positional relationship, and are not restricted by any specific directional references in practical application.
Examples
Referring to fig. 1, fig. 1 is a schematic circuit diagram of an internet of things lock for a metering box of an electric energy meter, the internet of things lock for the metering box of the electric energy meter comprises the metering box of the electric energy meter and an electronic lock, an MCU, an ESAM security module, a bluetooth module, a positioning module, an RS485 communication module and a power supply unit are installed in the metering box of the electric energy meter, and the electronic lock, the ESAM security module, the bluetooth module, the positioning module and the RS485 communication module are respectively connected to the MCU;
the MCU can control the electronic lock to lock and unlock the box door of the electric energy meter metering box;
the ESAM safety module can be matched with the MCU to realize the safety control of the locking and unlocking processes;
the Bluetooth module can receive locking and unlocking commands of the mobile phone end;
the positioning module can send the position information to the MCU;
the RS485 communication module is communicated with other equipment arranged in the electric energy meter metering box through an RS485 bus;
the MCU, the electronic lock, the ESAM safety module, the Bluetooth module, the positioning module and the RS485 communication module are all connected to a power supply interface of the power supply unit, and the voltage of the power supply interface is 5V.
As a specific implementation manner, the power supply unit includes a charge-discharge module, a dc power supply and a lithium battery, the dc power supply and the lithium battery are respectively connected with the charge-discharge module, and the charge-discharge module is provided with a power supply interface. The direct current power supply is from an intelligent circuit breaker in the electric energy meter metering box or is from 220V of self-distribution alternating current to 5V of direct current; the lithium battery should support a maximum instantaneous current of at least 3A in view of the power consumption at the moment of unlocking.
Referring to fig. 1, the MCU has a chip model STM32L431VCT 6; the ESAM security module adopts a chip SC1166Y, and is connected with the MCU through an SPI (serial peripheral interface) 2; this thing allies oneself with tool to lock goes upward communication and supports two kinds of communication modes of wired RS485 and wireless bluetooth, and ESAM safety module can guarantee the safe and reliable of two kinds of communication modes of bluetooth and RS 485. ESAM (embedded Secure Access module), which is an embedded security control module. The ESAM hardware has the security structures of sensors (voltage, clock, temperature, illumination, filters (preventing spikes/burrs), independent internal clocks (independent CLK), (SFI) detection mechanisms, passive and active shields, gluing logic (difficult to reverse engineer circuits), handshaking circuits, high-density multilayer technology, metal shielding protective layers, internal data self-destruction after external attack detection, bus and memory encryption, virtual addresses, chip tamper-resistant design, unique serial numbers, hardware error detection, random number generators, pre-silicon power analysis and the like, and has the hardware security characteristics of detection prevention, attack resistance, self-destruction and the like.
The application of the ESAM security module is related to various special or general intelligent devices, and the ESAM embedded security control module can play the unique security control role for all products and application systems which need higher data security requirements such as identity authentication, data encryption/decryption, security storage, communication confidentiality and the like. The system has the functional characteristics of identity bidirectional authentication, data encryption and decryption, distributed key derivation, internal distributed keys, digital signatures, electronic wallets, transmission line protection, data secure storage and the like.
According to the electric energy meter measuring box current situation that the power distribution network is wide and wide in a point, the thing allies oneself with the tool to lock and other equipment in the electric energy meter measuring box like multi-functional electric energy meter, collector etc. the wired RS485 mode communication of preferred selection, local cell-phone APP can pass through bluetooth and connect thing allies oneself with the tool to lock, realizes intelligent tool to lock's control and inquiry. Simultaneously, the thing allies oneself with the tool to lock can also be connected and communicate through wireless bluetooth with the newest thing networking electric energy meter of national grid. No matter wired communication or wireless communication, the ESAM safety module can provide safety guarantee, especially can guarantee the safe and reliable verification of the unlocking process, and realizes safe storage, data encryption and decryption, bidirectional identity authentication, access authority control and line encryption transmission.
The MCU comprises a plurality of GPIO interfaces, and the GPIO interfaces are connected with the electronic lock. According to the management requirement of the batch meter of difference, the batch meter need have 2 doors or 3 doors all to need to realize solitary intelligent access control management, in this embodiment, has considered the condition of two electronic locks, realizes the management of electric energy meter batch meter multigate, and this electronic lock supports the 5V power supplies of electronic type commonly used. The electronic lock is provided with a feedback pin and a control pin, the on/off state of the electronic lock can be fed back, and the MCU controls the action of the electronic lock through the control pin.
In this embodiment, the GPIO interface also undertakes other tasks, as shown in fig. 1, the GPIO interface is connected to a normally open self-reset switch, the self-reset switch is installed outside the enclosure, and one end of the self-reset switch is grounded, the MCU sets the external interrupt triggered by the GPIO interface to be a low-level trigger mode after the sleep, and the service staff can press the self-reset switch to trigger the external interrupt, thereby waking up the sleeping system.
In addition, the GPIO interface is also connected with a normally closed contact of a relay KM1, one end of the normally closed contact is grounded, correspondingly, a coil of the relay KM1 is connected between the positive electrode of the direct-current power supply and the charging and discharging module in series, when the direct-current power supply fails to supply power, the coil of the relay KM1 loses power, the normally closed contact is in a closed state, a pin of the GPIO is pulled down to be a low level from a high level, and the MCU judges that the direct-current power supply fails according to the low level;
the GPIO interface is also connected with a normally closed contact of a power-on delay relay KT1, the MCU sets the external interruption triggered by the GPIO interface after dormancy to be in an edge triggering mode, specifically, rising edge triggering, the normally closed contact is directly connected to the anode of a direct current power supply, and a coil of the power-on delay relay KT1 is also connected between the anode of the direct current power supply and a charging and discharging module in series.
The positioning module is based on a Beidou satellite navigation system, the type of the positioning module is ATGM336H, and the positioning module is connected with the MCU through a UART interface 1; the positioning information can be combined with automatic reporting of fault events, the optimal path and real-time map navigation formulated by rush repair personnel are realized, fault points are accurately reached, and active rush repair is accurately carried out.
Other devices in the electric energy meter measuring box comprise a multifunctional electric energy meter, the RS485 communication module is communicated with the multifunctional electric energy meter through an RS485 bus, the model of a chip adopted by the RS485 communication module is MAX485, and the RS485 communication module is connected with the MCU through a UART interface 3; of course, other devices in the electric energy meter measuring box can also be devices supporting 485 communication, such as a data concentrator and a collector.
Furthermore, if the multifunctional electric energy meter has a Bluetooth function, the Bluetooth module can be connected with and communicate with the multifunctional electric energy meter, the Bluetooth module adopts a chip model number N52832, and the Bluetooth module is connected with the MCU through a UART interface 2; therefore, the uplink communication of the internet of things lockset not only supports wired RS485 communication modes but also supports wireless Bluetooth communication modes, and the internet of things lockset can be connected with the Bluetooth of a mobile phone to unlock.
Of course, other devices supporting 485 communication and bluetooth communication, such as a data concentrator and a collector, can also achieve the same effect and are connected with the internet of things lockset.
At box internally mounted there is temperature and humidity sensor, temperature and humidity sensor adopts the chip model to be DTH11, through I2C interface 1 between temperature and humidity sensor and MCU, carry out real-time supervision to environmental factors such as temperature, humidity in the box, discover abnormal conditions in time and report to the police, reduce the probability that the accident took place, reduce the loss that the accident caused.
Further, still install acceleration sensor in the box, acceleration sensor adopts the chip model to be ADXL345, connect through SPI interface 1 between acceleration sensor and the MCU. The acceleration sensor can realize the slope detection, the vibrations monitoring of measurement box, the monitoring of violent destruction, and when taking place unusually and violent destruction, sensor detection information uploads after the MCU analysis, can report to the police in real time, realizes that the data of destruction action are forensics.
As a specific implementation manner, the power supply unit includes a charge-discharge module, a dc power supply and a lithium battery, the dc power supply and the lithium battery are respectively connected with the charge-discharge module, and the charge-discharge module is provided with a power supply interface. The direct current power supply is from an intelligent circuit breaker in the electric energy meter metering box or is from 220V of self-distribution alternating current to 5V of direct current; the lithium battery should support a maximum instantaneous current of at least 3A in view of the power consumption at the moment of unlocking.
MCU can detect whether to be supplied power by DC power supply at present through GPIO pin, when DC power supply trouble, switch into the lithium cell by the charge-discharge module and supply power for entire system, how to rationally use the electric energy of lithium cell, we have proposed the following electric energy and have used the control strategy (method):
referring to fig. 2, when the MCU determines that the current dc power supply stops supplying power, it first communicates with other devices (multifunctional electric energy meters) in the metering box of the electric energy meter through the RS485 module, which is divided into two cases:
1. the system can communicate, that is, the information that the direct-current power supply stops supplying power is uploaded through the multifunctional electric energy meter and the next step of instruction is received, the received feedback instruction is divided into an operation instruction and a dormancy instruction, if the instruction is the operation instruction, the system continues to operate until the electric quantity is exhausted and shut down, the situation is that the system needs to continuously operate to realize monitoring and sensing of the maximum duration based on the fact that the system-of-things lockset is required to be operated, and a maintainer can arrive in a short time, and the direct-current power supply resumes supplying power after being overhauled and continues to operate; if the command is a sleep command, the MCU executes sleep to wait for maintenance, the service life of the lithium battery can be prolonged, the residual electric quantity can still support Bluetooth unlocking after the system is awakened, an overhaul worker can press the self-reset switch to trigger external interruption firstly, the level of a GPIO (general purpose input/output) interface connected with the self-reset switch is pulled down by using level triggering, so that the system is awakened, a mobile phone is connected with a Bluetooth module of the Internet of things lockset, unlocking is controlled through APP, manual unlocking is not needed, and after maintenance, the direct-current power supply restores power supply and continues to operate;
2. the system records the event, and then directly sleeps to wait for maintenance, if the electricity is coming again in the period, the coil of the electrified delay relay KT1 is electrified by the direct-current power supply, the normally closed contact of the electrified delay relay KT1 is disconnected after delaying for a period of time, because the normally closed contact is directly connected between the anode of the direct-current power supply and the charging and discharging module in series, the level of the corresponding GPIO interface is changed from low to high (the direct-current power supply is changed from power-off to power-on), and the system is awakened for an edge triggering mode, particularly for rising edge triggering. And uploading the record through an RS485 module, and continuing to operate.
The electric energy can be reasonably distributed and used particularly under the condition of lithium battery power supply through the strategy.
The invention has the beneficial effects that:
the invention discloses an internet of things lockset for an electric energy meter metering box, which can realize the safe digital control of unlocking the electric energy meter metering box based on an ESAM (electronic security access module) safety module, automatically generate the records of unlocking and locking, monitor abnormal behaviors such as illegal unlocking, electricity stealing and the like in real time and comprehensively improve the lean management level of a low-voltage transformer area.
The invention can monitor the environmental factors such as temperature, humidity and the like in the box body in real time, alarm in time when abnormal conditions are found, reduce the probability of accidents and reduce the loss caused by the accidents.
A positioning module is arranged in the mobile terminal, a fault event and a specific position are reported automatically, real-time map navigation is realized by matching with a navigation system, and active rush repair is carried out accurately.
The Bluetooth of the mobile phone is connected in a supporting way, a key is not needed, and the ESAM safety module is matched to realize easy and safe unlocking. The lock can support and control a plurality of locksets, and the on-site operation and maintenance cost is reduced.
The method integrates multiple advanced technologies such as internet of things sensing, monitoring and collecting and identity recognition to form the internet of things lockset based on the metering box. Through the direct perception monitoring batch meter state information of advanced sensing technology, realize many specialty practical functions such as the online reliable detection management of table case entrance guard, batch meter environment humiture control. The intelligent metering box has the advantages that the all-dimensional intelligent internet of things forming a data intelligent framework is used as an idea, the weak link on the side of the meter box is enhanced and accurately monitored and deployed, the data monitoring strategy of the intelligent metering box is developed in multiple dimensions, and the internet of things perception metering box based on the internet of things lock is constructed.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or additions or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. An internet of things lockset for a metering box of an electric energy meter comprises the metering box of the electric energy meter and an electronic lock, and is characterized in that an MCU, an ESAM (electronic safety monitoring and monitoring module), a Bluetooth module, a positioning module, an RS485 communication module and a power supply unit are installed in the metering box of the electric energy meter, and the electronic lock, the ESAM safety module, the Bluetooth module, the positioning module and the RS485 communication module are respectively connected to the MCU;
the MCU can control the electronic lock to lock and unlock the box door of the electric energy meter metering box;
the ESAM safety module can be matched with the MCU to realize the safety control of the locking and unlocking processes;
the Bluetooth module can receive locking and unlocking commands of the mobile phone end;
the positioning module can send the position information to the MCU;
the RS485 communication module is communicated with other equipment arranged in the electric energy meter metering box through an RS485 bus;
the MCU, the electronic lock, the ESAM safety module, the Bluetooth module, the positioning module and the RS485 communication module are all connected to a power supply interface of the power supply unit, and the voltage of the power supply interface is 5V.
2. The lock for the metering box of the electric energy meter as claimed in claim 1, wherein the MCU adopts a chip model number STM32L431VCT 6.
3. The lock for the metering box of the electric energy meter as claimed in claim 1, wherein the ESAM security module adopts a chip SC1166Y, and the ESAM security module is connected with the MCU through an SPI interface 2.
4. The lock for the metering box of the electric energy meter, according to claim 1, is characterized in that the MCU comprises a plurality of GPIO interfaces, and the GPIO interfaces are connected with the electronic lock.
5. The lock of claim 1, wherein the positioning module is based on a Beidou satellite navigation system, the positioning module adopts a chip with a model number of ATGM336H, and the positioning module is connected with the MCU through a UART interface 1.
6. The lock according to claim 1, wherein other devices in the metering box of the electric energy meter comprise a multifunctional electric energy meter, the RS485 communication module is communicated with the multifunctional electric energy meter through an RS485 bus, the RS485 communication module adopts a chip with a model number of MAX485, and the RS485 communication module is connected with the MCU through a UART interface 3.
7. The lock for the metering box of the electric energy meter is characterized in that the multifunctional electric energy meter has a Bluetooth function, the Bluetooth module can be connected with and communicate with the multifunctional electric energy meter, the Bluetooth module adopts a chip with a model number of N52832, and the Bluetooth module is connected with an MCU through a UART interface 2.
8. The lock set of claim 1, further comprising a temperature and humidity sensor, wherein the temperature and humidity sensor is a chip type DTH11, and the temperature and humidity sensor is connected to the MCU through an I2C interface 1.
9. The lock for the metering box of the electric energy meter is characterized by further comprising an acceleration sensor, wherein the acceleration sensor adopts a chip with the model number of ADXL345, and the acceleration sensor is connected with the MCU through an SPI (serial peripheral interface) 1.
10. The lock for the internet of things of the electric energy meter metering box according to claim 1, wherein the power supply unit comprises a charge-discharge module, a direct current power supply and a lithium battery, the direct current power supply and the lithium battery are respectively connected with the charge-discharge module, and the charge-discharge module is provided with a power supply interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111479744.2A CN114167782A (en) | 2021-12-06 | 2021-12-06 | Internet of things lockset for electric energy meter metering box |
Applications Claiming Priority (1)
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Cited By (1)
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| CN115754399A (en) * | 2022-11-08 | 2023-03-07 | 中南仪表有限公司 | Single-phase intelligent Internet of things electric energy meter |
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