CN112557721A - Low-cost electric power electricity stealing prevention metering equipment - Google Patents
Low-cost electric power electricity stealing prevention metering equipment Download PDFInfo
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- CN112557721A CN112557721A CN201910908668.9A CN201910908668A CN112557721A CN 112557721 A CN112557721 A CN 112557721A CN 201910908668 A CN201910908668 A CN 201910908668A CN 112557721 A CN112557721 A CN 112557721A
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- 230000005611 electricity Effects 0.000 title claims description 21
- 230000002265 prevention Effects 0.000 title claims description 18
- 238000004891 communication Methods 0.000 claims abstract description 16
- 230000009467 reduction Effects 0.000 claims description 11
- 239000003990 capacitor Substances 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 7
- 230000006641 stabilisation Effects 0.000 claims description 7
- 238000011105 stabilization Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims 3
- 238000012544 monitoring process Methods 0.000 abstract description 9
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 8
- 238000007726 management method Methods 0.000 description 8
- 210000004899 c-terminal region Anatomy 0.000 description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000006355 external stress Effects 0.000 description 2
- 230000004297 night vision Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/24—Arrangements for avoiding or indicating fraudulent use
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/063—Details of electronic electricity meters related to remote communication
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/066—Arrangements for avoiding or indicating fraudulent use
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
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Abstract
The invention relates to a low-cost electric power anti-theft electric metering device, comprising: the system comprises a battery, a battery management module, a main control chip, a communication module, a door magnetic switch, a vibration sensor and a camera, wherein the battery, the battery management module and the main control chip are connected in sequence, and the communication module, the door magnetic switch, the vibration sensor and the camera are connected with the main control chip. The invention can accurately, scientifically, fully and efficiently utilize the informatization means to carry out operation and maintenance monitoring and electric quantity management of the electric power metering box, and meanwhile, as the 4G transmission function is not opened frequently, the box door can accurately report alarm information and GPS geographic position information to prompt manual intervention only by means of transmission of NB _ IoT small data volume when being struck by the outside or being forcibly dismantled, thereby greatly saving flow rate charge and equipment operation cost.
Description
Technical Field
The invention relates to the field of ubiquitous power Internet of things, in particular to low-cost electric power electricity stealing prevention metering equipment.
Background
At present, the management of an electric power metering system and an operation and maintenance management unit on a user self-maintenance metering box still adopts a mode of manual periodic inspection, the management of behavior of stealing electricity by opening the box privately in remote areas or users is extremely limited, and the influence of the technical level, traffic convenience and working mode of inspection and maintenance personnel is great.
The interference to individual stealing behavior is extremely limited due to the lack of evidence of tangible photographs, video material, etc. The regional power metering and operation and maintenance unit with particularly serious electricity stealing adopts the on-site prevention mode according to the fixed point camera, the installation position and the angle of the fixed point camera often can generate the dead angle of monitoring, and the management of scientific and standard is not facilitated.
On the other hand, the fixed point camera has large transmitted video data volume and can only be installed in a wired mode, so that wiring trouble and large data storage volume of a background server are caused, and the mode efficiency of depending on manual inspection of video streams is extremely low when a user opens a box to steal electricity privately. The fixed point camera operates in all weather, the great loss of electric energy is also caused, and the generated line loss is too large, so that the mode is inconvenient to popularize comprehensively.
The existing electricity stealing prevention technology generates line loss to waste electric energy, is inconvenient for comprehensive popularization, is inconvenient for pertinence inspection due to too much generated redundant videos, and adopts a wired wiring mode to not only facilitate processing but also cause the storage pressure of a background server.
Disclosure of Invention
The invention adopts the lithium ion battery pack for power supply, thereby not causing line loss and interference to a normal power supply system. Only alarm information and small-capacity electricity stealing picture data are transmitted, so that the trouble of field wiring is saved, and the problems that a server needs to store excessive data and operation and maintenance costs are solved.
The technical scheme adopted by the invention for realizing the purpose is as follows:
a low-cost electric power theft prevention metering apparatus, comprising: the system comprises a battery, a battery management module, a main control chip, a communication module, a door magnetic switch, a vibration sensor and a camera, wherein the battery, the battery management module and the main control chip are connected in sequence, and the communication module, the door magnetic switch, the vibration sensor and the camera are connected with the main control chip.
The battery management module comprises a voltage reduction circuit; the voltage reduction circuit adopts a voltage reduction and stabilization chip, wherein an enable control pin EN is connected with a power supply VCC through a resistor R6, an inductance pin LX is connected with an inductance L1, a resistor R7 and a resistor R9 are grounded through a sequence, nodes of a resistor R7 and a resistor R9 are connected with an output feedback pin FB of the voltage reduction and stabilization chip, an input pin IN is connected with the power supply VCC and is grounded through a capacitor C3, the output feedback pin FB is connected with a battery through a capacitor C2 and is grounded through a capacitor C4, and a node of the inductance L1 and the resistor R7 is connected with the battery.
The power pin VDD of the vibration sensor is connected with the chip selection pin CS through a resistor R17, the power pin VDD is connected with the power pin Vs, the power pin VDD is connected with the serial communication clock pin SCL through a resistor R12, the power pin VDD is grounded through two capacitors C20 and C21 which are connected in parallel, the serial communication clock pin SCL is connected with the serial data pin SDA through a resistor R12 and a resistor R13 in sequence, the serial communication clock pin SCL and the serial data pin SDA are connected with the master control chip respectively, the serial data output pin SDO is grounded through a resistor R16, and the ground end is grounded.
The communication module includes an NB _ IoT module and a 4G module.
The 4G module is connected with the main control chip through a switch circuit, the switch circuit is controlled by a triode Q1, a collector is connected with the 4G module through a resistor R20, an emitter is grounded and connected with a base through a resistor R23, and the base is connected with the main control chip through a resistor R22.
The 4G module is connected with a display circuit, the display circuit is controlled by a triode Q2, a collector is connected with a battery through a resistor R25 and an LED lamp which are connected in series, an emitter is grounded and connected with a base through a resistor R30, and the base is connected with the 4G module through a resistor R29.
When the data change of any one of the three axes of the vibration sensor exceeds a set threshold value, the NB _ IoT module uploads vibration information to a background server for reminding manual timely intervention;
when the box door provided with the electricity larceny prevention metering equipment is opened, the door magnetic switch is changed from the original high level to the low level to be identified by the main control chip, the camera is started to shoot and obtain evidence, and the evidence is transmitted to the background server through the 4G module.
And the NB _ IoT is communicated with the server through an MQTT protocol under the control of the main control chip to alarm.
The pictures shot on site are transmitted through the 4G module, and the server side performs backup storage after receiving the pictures.
The invention has the following beneficial effects and advantages:
1. the invention reduces the possibility of false alarm and greatly saves the manpower.
2. The invention has no trouble of field wiring, and solves the problems that the server needs to store excessive data and the field operation and maintenance flow rate charge.
3. The invention adopts the lithium ion battery pack for power supply, and can not cause interference to a normal power supply system.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a control flow diagram of the master control system of the present invention;
FIG. 3 is a diagram of a first voltage step-down regulator circuit in the power supply portion of the present invention;
FIG. 4 is a diagram of a second voltage step-down regulator circuit in the power supply portion of the present invention;
FIG. 5 is a circuit diagram of an ADXL345 accelerometer;
FIG. 6 is a switching circuit diagram;
FIG. 7 is a circuit diagram of a network status signal display circuit;
fig. 8 is a circuit diagram of an interference detection indication display circuit.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
According to the electric power electricity larceny prevention metering box, in the design concept of the electric power electricity larceny prevention metering box, when the box body is hit by external stress or forcibly disassembled to exceed a certain limit, the vibration sensor sends the angle and acceleration value changes of at least two shafts, the change is compared with the angle setting threshold value arranged in the MCU, when the angle is larger than 36 degrees, the box body is deemed to be hit by the external stress or forcibly disassembled at the moment, corresponding information is timely sent to the background terminal through NB _ IoT, and manual timely intervention is prompted.
When the chamber door is really opened the twinkling of an eye, thereby originally arrange the door magnetism switch level of both sides door and arouse outside interrupt generation by original high level conversion to low level, MCU differentiatees this interrupt and triggers the infrared camera of arranging at the inside area night vision function of box and shoot the evidence of reserving, then in time carry out the teletransmission and the backup of photo through the 4G module, the camera is arranged and is surveyed inside the box, shoot the scene and steal suspicion people's photo conscientiously, and can not cause to beat by mistake and the mistake is taken.
NB _ IoT and 4G are simultaneously applied to the interior of the electricity larceny prevention metering box, and respectively execute different transmission roles, so that the transmission distance advantage of the NB _ IoT and the NB _ IoT is fully utilized without mutual interference.
As shown in FIG. 1, before electricity stealing prevention, a DC5V DC power supply can be used to fully charge the lithium ion battery pack, then the device adjusts the fixed position and the proper angle of the camera, and the electricity stealing prevention box can be operated after being installed on site and started. At the moment, the 3.6V lithium ion battery pack supplies power to all functional parts of the whole equipment, including electric equipment such as a 4G module, an NB _ IoT module, a camera, a door magnetic switch and an ADXL345 vibration sensor.
The door magnetic switch has the following functions: when the door is really opened in an unauthorized state, the original door magnetic switch is changed from the original high level to the low level, and external interruption is triggered to trigger the main control chip to execute the next function. One end of the door magnetic switch is connected with the single chip microcomputer, and the other end of the door magnetic switch is grounded.
The infrared camera is triggered by the in-box main control chip to take a picture after the external door magnetic switch becomes low level, two shooting modes of 1s are continuously taken for 10s, the information is timely transmitted to the background server through 4G, and sufficient evidence is reserved for backup.
NB _ IoT carries out remote communication with the server through MQTT protocol under the control of MCU, uploads alarm information and GPS geographic position data information, and interacts with the two to execute respective functions.
The pictures shot on site are transmitted in time and remotely through the 4G module, and the server side performs backup storage after receiving the data and uses the data as accountability information.
Fig. 2 is a control flow chart of the main control system, which is explained as follows according to the above flow chart: after the power-on, the main control system sends corresponding information to the server through the NB _ IoT and the 4G modules respectively through corresponding protocols, and requests the server to issue an instruction stream. If the server has an instruction to issue, the instruction state of the service is executed, and the monitoring function state is entered after the execution is finished. If the server does not issue the instruction, the master control system directly enters the monitoring function state after waiting for a period of time.
And in the monitoring function state, when the data of three axes of the vibration sensor changes, the vibration information and the GPS geographical position information are uploaded to a background server through NB _ IoT to remind people to intervene in time. When the chamber door is really opened, the gate valve switch is changed from the original high level to the low level and then is identified by the MCU of the main control system, the camera with night vision is started to shoot and obtain evidence, and the evidence is transmitted to the background server through the 4G module so as to facilitate tracing.
Fig. 3 and 4 are diagrams of a voltage reduction and stabilization circuit in the power supply part of the invention, before the monitoring equipment is installed in the box body, a DC5V direct current power supply is input from the outside to charge the equipped large-capacity battery pack through a SY8088 voltage reduction and stabilization chip circuit, and VBT _3.6V after full charge can be converted into VCC _3.3V output voltage through the voltage reduction and stabilization circuit of an XC6206P332MR chip to provide electric energy for the main control chip MCU and other functional circuits. Meanwhile, the VBT _3.6V battery pack can directly supply power to the 4G module circuit. The node of the output resistor divider resistor R7 and the resistor R9 is connected with the output feedback pin FB of SY 8088.
The main control chip plays the role of the brain and the command center, and coordinates all the sub-module circuits and all the functional circuits to play a role. Whether acceleration value changes exist in three axes of the ADXL345 or not is detected, whether a door magnetic switch is switched on or off is detected, and functions of linkage, battery pack voltage value acquisition and the like are performed on an NB _ IoT module, a 4G module, a camera and the like.
Fig. 5 shows an ADXL345 accelerometer, when the anti-electricity-theft transformer box is hit by external force or is forcibly detached, the acceleration values of three axes of the anti-electricity-theft transformer box change in values of at least two axes, the MCU collects the change and compares the change with a set threshold, and when the change is greater than the set threshold, for example, the values of the x axis and the y axis are greater than 36 °, the MCU considers that the anti-electricity-theft transformer box is hit by external force or is forcibly detached, and uploads information and GPS geographical location information through NB _ IoT until the server issues an instruction or continues to perform a monitoring function.
Fig. 6 shows a switch control circuit, which drives a transistor Q1 to turn on and off by the high-low level output by pin 63 of the main control chip MCU, and when the M _ PWR _ CTRL terminal is at a high level, the collector (C terminal) of the transistor outputs a low level. When the M _ PWR _ CTRL terminal is at a low level, the transistor is not turned on, and the collector (C terminal) maintains its default power-up state. And controlling the 4G module to be turned on or off according to the time sequence of the PWRKEY high and low levels of the 4G module. The module may be powered on by pulling M _ IGT low (i.e., PWRKEY pin for 4G mode) for at least 1s with M _ PWR _ CTRL high and then M _ PWR _ CTRL low.
Fig. 7 shows a network status signal indicating circuit, and the LPG terminal is the 41 th pin of the 4G module, i.e. the network status signal pin of the NETLIGHT signal. When the pin outputs high level, the triode (Q2) is conducted at the same time, the collector terminal (C terminal) outputs low level, and the LED network state indicator lamp (D2) is lightened. When the pin outputs low level, the base level of the triode (Q2) cannot be conducted at the moment, the collector terminal (C terminal) outputs high level, and the LED network state indicator lamp (D2) is turned off. The networking state of the 4G module can be indicated according to the on-off duration of the LED indicating lamp. Such as: if no network is found, the network is turned on for 64ms and turned off for 800 ms; the light 64ms and the light off 3000ms are registered to the network; the GPRS communication state is set as the on 64ms and off 300 ms.
FIG. 8 shows an interference detection status indicator circuit, where the F _ SYNC pin can be multiplexed into an RF interference detection indicator function (JD), and can be switched between the RF _ SYNC function and the JD function via an AT + SJDR command. When interference is detected and the < mode > parameter of the AT + SJDR command is set to 2 or 3 in the JD mode, the pin outputs high level, the triode (Q3) is conducted AT the moment, the collector terminal (C terminal) outputs low level, the LED lamp (D3) is lightened, and indication information is expressed to the outside. And when in the state of other modes, the RF _ SYNC pin outputs low level, the triode (Q3) is not conducted, the collector (end C) is high level at the moment, the LED lamp (D3) is in an off state, and another information is expressed to the outside.
The 5G network distribution mode to be completed in the future can replace the 4G module in the invention to execute the same function. Or directly adopt a high-cost scheme mode to directly replace 4G and NB _ IoT modules with 5G modules for all data transmission.
The invention solves the problem of electricity stealing of the current electric power metering system, changes the traditional mode that the nearby area is shot all day by using a fixed-point monitoring camera and the electricity stealing occurrence fact cannot be accurately positioned, adopts NB _ IoT technology and 4G image transmission technology to carry out on-site evidence keeping when abnormal power taking and electricity stealing occur, and timely transmits abnormal alarm information to prompt corresponding personnel to timely and accurately interfere. The invention can accurately, scientifically, fully and efficiently utilize the informatization means to carry out operation and maintenance monitoring and electric quantity management of the electric power metering box, and meanwhile, as the 4G transmission function is not opened frequently, the box door can accurately report alarm information and GPS geographic position information to prompt manual intervention only by means of transmission of NB _ IoT small data volume when being struck by the outside or being forcibly dismantled, thereby greatly saving flow rate charge and equipment operation cost.
Claims (9)
1. The utility model provides a low-cost electric power anti-electricity-theft metering equipment which characterized in that includes: the system comprises a battery, a battery management module, a main control chip, a communication module, a door magnetic switch, a vibration sensor and a camera, wherein the battery, the battery management module and the main control chip are connected in sequence, and the communication module, the door magnetic switch, the vibration sensor and the camera are connected with the main control chip.
2. The low-cost electric power theft prevention metering device according to claim 1, wherein the battery management module comprises a voltage reduction circuit; the voltage reduction circuit adopts a voltage reduction and stabilization chip, wherein an enable control pin EN is connected with a power supply VCC through a resistor R6, an inductance pin LX is connected with an inductance L1, a resistor R7 and a resistor R9 are grounded through a sequence, nodes of a resistor R7 and a resistor R9 are connected with an output feedback pin FB of the voltage reduction and stabilization chip, an input pin IN is connected with the power supply VCC and is grounded through a capacitor C3, the output feedback pin FB is connected with a battery through a capacitor C2 and is grounded through a capacitor C4, and a node of the inductance L1 and the resistor R7 is connected with the battery.
3. The low-cost electric power electricity larceny prevention metering device according to claim 1, wherein a power pin VDD of the vibration sensor is connected with a chip selection pin CS through a resistor R17, the power pin VDD is connected with a power pin Vs, the power pin VDD is connected with a serial communication clock pin SCL through a resistor R12, the power pin VDD is grounded through two capacitors C20 and C21 which are connected in parallel, the serial communication clock pin SCL is connected with a serial data pin SDA through a resistor R12 and a resistor R13 in sequence, the serial communication clock pin SCL and the serial data pin SDA are respectively connected with a main control chip, a serial data output pin SDO is grounded through a resistor R16, and a ground terminal is grounded.
4. The low-cost electric power theft prevention metering device according to claim 1, wherein the communication module comprises an NB _ IoT module and a 4G module.
5. The low-cost electric power anti-theft metering device as claimed in claim 4, wherein the 4G module is connected with the main control chip through a switch circuit, the switch circuit is controlled by a triode Q1, wherein a collector is connected with the 4G module through a resistor R20, an emitter is grounded and connected with a base through a resistor R23, and the base is connected with the main control chip through a resistor R22.
6. The low-cost electric anti-theft metering device of claim 4, wherein the 4G module is connected with a display circuit, the display circuit is controlled by a triode Q2, a collector is connected with the battery through a resistor R25 and an LED lamp which are connected in series, an emitter is grounded and connected with a base through a resistor R30, and the base is connected with the 4G module through a resistor R29.
7. A low-cost electric power anti-theft electric power metering device method is characterized in that,
when the data change of any one of the three axes of the vibration sensor exceeds a set threshold value, the NB _ IoT module uploads vibration information to a background server for reminding manual timely intervention;
when the box door provided with the electricity larceny prevention metering equipment is opened, the door magnetic switch is changed from the original high level to the low level to be identified by the main control chip, the camera is started to shoot and obtain evidence, and the evidence is transmitted to the background server through the 4G module.
8. The low-cost electric power electricity larceny prevention metering device method as claimed in claim 7, wherein the NB _ IoT communicates with the server through MQTT protocol under the control of the main control chip to alarm.
9. The low-cost electric power electricity larceny prevention metering device method as claimed in claim 7, wherein the picture shot on site is transmitted through the 4G module, and the server side performs backup storage after receiving the picture.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910908668.9A CN112557721A (en) | 2019-09-25 | 2019-09-25 | Low-cost electric power electricity stealing prevention metering equipment |
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| CN201910908668.9A CN112557721A (en) | 2019-09-25 | 2019-09-25 | Low-cost electric power electricity stealing prevention metering equipment |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316739A (en) * | 2014-11-11 | 2015-01-28 | 湖北索瑞电气有限公司 | Electricity meter metering box circuit preventing electricity larceny based on four communication modes |
| CN109898563A (en) * | 2019-02-12 | 2019-06-18 | 辽宁达能电气股份有限公司 | A kind of smart electronics well lid and control method based on NB-IOT |
| CN210803563U (en) * | 2019-09-25 | 2020-06-19 | 中国科学院沈阳计算技术研究所有限公司 | Low-cost electric power electricity stealing prevention metering equipment |
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2019
- 2019-09-25 CN CN201910908668.9A patent/CN112557721A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316739A (en) * | 2014-11-11 | 2015-01-28 | 湖北索瑞电气有限公司 | Electricity meter metering box circuit preventing electricity larceny based on four communication modes |
| CN109898563A (en) * | 2019-02-12 | 2019-06-18 | 辽宁达能电气股份有限公司 | A kind of smart electronics well lid and control method based on NB-IOT |
| CN210803563U (en) * | 2019-09-25 | 2020-06-19 | 中国科学院沈阳计算技术研究所有限公司 | Low-cost electric power electricity stealing prevention metering equipment |
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