CN210270548U - Distribution box monitoring system based on wireless data transmission technology - Google Patents

Distribution box monitoring system based on wireless data transmission technology Download PDF

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CN210270548U
CN210270548U CN201920817459.9U CN201920817459U CN210270548U CN 210270548 U CN210270548 U CN 210270548U CN 201920817459 U CN201920817459 U CN 201920817459U CN 210270548 U CN210270548 U CN 210270548U
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module
data transmission
detection module
data
wireless data
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李伟
王文成
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Zhongguancun Technology Leasing Co ltd
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Beijing Sada Intelligent Technology Co ltd
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Abstract

The utility model discloses a block terminal monitored control system based on wireless data transmission technique, data acquisition processing module's input is connected with three electric energy detection module respectively, the switch detection module that opens and shuts, alternating current leakage detection module, multichannel temperature detection module, the data acquisition module is felt to the cigarette, three electric energy detection module correspond and connect three voltage current detection sensor, the switch detection module that opens and shuts connects N passageway switch detection sensor, alternating current leakage detection module connects N passageway leakage detection sensor, N passageway ABC item temperature detection sensor is connected to multichannel temperature detection module, data acquisition processing module's output has connected gradually wireless data transmission module, remote data server is connected with mobile terminal or PC end again respectively. The utility model provides a block terminal wiring difficulty that exists among the prior art and lead to the problem that can not use widely by a large scale because of the cost.

Description

Distribution box monitoring system based on wireless data transmission technology
Technical Field
The utility model belongs to the technical field of the construction site safety management with electricity, concretely relates to block terminal monitored control system based on wireless data transmission technique.
Background
The power utilization in the construction site has openness and randomness, and the problems of electric shock, fire and the like easily occur, so that the power utilization safety problem is caused. The traditional management method is to seal and lock the distribution box, and specially-assigned persons are responsible for wiring and switching, but due to uncertainty of field personnel and the fact that illegal operation of civil workers is common, system management is often not in accordance with actual situations on the field. In order to technically cooperate with safe power utilization management, a leakage protector and an overload breaker are sequentially applied to a distribution box on a construction site and brought into national standards for forced management, and at present, the latest distribution box management is also provided with an electrical fire detector and a common electric meter or an intelligent electric meter so as to obtain field power utilization data remotely. However, in practical use, these devices have several problems as follows:
and the data of the distribution box is transmitted to a remote place by adopting a wired RS485 mode. The wired connection mode is possibly limited by the field, exposed in an open-air place and easily damaged by moving machinery, so that data cannot be transmitted;
as the distribution box is likely to move randomly at different stages on the site, the difficulty is brought to the wiring for data transmission again, and the operability is poor;
the on-site switching state of the distribution box cannot be detected, electric equipment cannot be determined in time, and the problem troubleshooting is time-consuming;
the module of selecting for use a plurality of producers often when needing to detect smoke and feel, electric leakage and ammeter function combines together, and this not only leads to the too big good installation of volume, and the module data integration between different producers is more troublesome moreover.
On the other hand, wireless transmission of current data is mature, such as wifi, bluetooth, GPRS, 3G and 4G are mature and applied to many fields, but informatization of construction sites is still relatively laggard for two reasons: 1) WiFi is difficult to realize full coverage on a construction site, and the Bluetooth transmission distance is limited; 2) GPRS, 3G and 4G transmissions have a problem of relatively high tariffs compared to job site device management.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a block terminal monitored control system based on wireless data transmission technique has solved the block terminal wiring difficulty that exists among the prior art and has leaded to the problem that can not use widely by a large scale because of the cost.
The utility model adopts the technical proposal that the distribution box monitoring system based on the wireless data transmission technology comprises a data acquisition processing module, the data acquisition processing module is an STM32F105 chip, the input end of the data acquisition processing module is respectively connected with an A item electric energy detection module, a B item electric energy detection module, a C item electric energy detection module, a switch on-off detection module, an alternating current leakage detection module, a multi-path temperature detection module and a smoke sensing data acquisition module, the A item electric energy detection module is correspondingly connected with an A item voltage current detection sensor, the B item electric energy detection module is correspondingly connected with a B item voltage current detection sensor, the C item electric energy detection module is correspondingly connected with a C item voltage current detection sensor, the switch on-off detection module is connected with N path switch detection sensors, the alternating current leakage detection module is connected with N path leakage detection sensors, the multi-path temperature detection module is connected with N path ABC item temperature detection sensors, the output end of the data acquisition processing module is sequentially connected with a wireless data transmission module and a remote data server, and the remote data server is respectively connected with a mobile terminal or a PC end; the output end of the data acquisition and processing module is also respectively connected with a battery voltage detection and control module, an alarm output control module and a switch opening and closing output control module; the wireless data transmission module is an LORA wireless data transmission module, the built-in chip is SX1278, an LORA-GPRS wireless gateway module is further connected between the wireless data transmission module and the remote data server, and the LORA-GPRS wireless gateway module is a wireless Modem embedded with a GSM/GPRS core unit and is provided with a complete power management system and a standard serial data interface.
The utility model is also characterized in that,
battery voltage detects and control module adopts STM32F105 main control chip, and this module effect is for the voltage that detects the battery to set up the safe value and guarantee that CPU chip and GPRS chip can normally work, alarm output control module adopts STM32F105 main control chip, and switch output control module that opens and shuts adopts STM32F105 main control chip, and the effect is long-range open/close switch.
The wireless data transmission module is an NB-IOT wireless data transmission module, the model is WH-NB73, and a user can conveniently integrate the wireless data transmission module into own mainboard equipment.
The A electric energy detection module, the B electric energy detection module and the C electric energy detection module all adopt three-phase multifunctional anti-electricity-theft metering chips RN8302 chips.
The switch opening and closing detection module and the alternating current leakage detection module both adopt an STM32F105 main control chip, the model of the multi-path temperature detection module is DS18B20, and the model of the smoke sensation data acquisition module is MQ-2-135-3-7-9.
The channel switch detection sensor and the channel leakage detection sensor both adopt RN8302 chips, and the temperature detection sensor of the ABC channel is DS18B20 in model.
The output end of the data acquisition processing module is also connected with an RS485 wired data transmission module, and the model of the RS485 wired data transmission module is SP485 EEN.
The beneficial effects of the utility model are that, block terminal monitored control system based on wireless data transmission technique does not need artifical wiring many times, and wireless module is efficient and with low costs. And an LORA wireless module is used for replacing RS485 wired transmission, so that the data transmission is stable, the damage is not easy to occur, the operability is strong, and the cost is low. The switch state detection is added, so that the electric equipment can be timely and clearly used. The on-spot switch position of traditional block terminal can't detect, when the investigation problem, needs to investigate one by one and more takes time, and the utility model discloses increase this function, can in time accurately make clear and definite use of electrical equipment, the quick investigation problem. The distribution box monitoring system based on the wireless data transmission technology achieves the purpose of function integration without piecing together modules of a plurality of manufacturers. The utility model discloses combine electric quantity, voltage, electric current, electric quantity, power factor, smoke and feel, electric leakage, output control and on-off state's detection, integrative integration in the function not only solves the difficulty of current a plurality of producer module integration, and convenient to use is high-efficient moreover. Reserve the RS485 interface, can directly carry out data interaction with old-fashioned system integrated intelligent distribution box, solved new and old equipment replacement with high costsly problem.
Drawings
Fig. 1 is a schematic structural diagram of a distribution box monitoring system based on a wireless data transmission technology of the present invention;
fig. 2 is a block diagram of the data acquisition terminal of the distribution box monitoring system based on the wireless data transmission technology;
fig. 3 is a block diagram of the electric leakage data structure of the distribution box monitoring system based on the wireless data transmission technology;
fig. 4 is the utility model discloses block terminal monitored control system work process flow chart based on wireless data transmission technique.
In the figure, 1, an A electric energy detection module, 2, a B electric energy detection module, 3, a C electric energy detection module, 4, a switch opening and closing detection module, 5, an alternating current leakage detection module, 6, a multi-path temperature detection module, 7, a smoke sensing data acquisition module, 8, a data acquisition and processing module, 9, a wireless data transmission module, 10, a battery voltage detection and control module, 11, an alarm output control module, 12, a switch opening and closing output control module, 13, a remote data server, 14, an RS485 wired data transmission module, 15, a PC terminal, 16, a mobile terminal and 17, a LORA-to-GPRS wireless gateway module.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model discloses a distribution box monitoring system based on wireless data transmission technology, the structure is shown in figure 1, including data acquisition processing module 8, data acquisition processing module 8 is STM32F105 chip, the input end of data acquisition processing module 8 is connected with A item electric energy detection module 1, B item electric energy detection module 2, C item electric energy detection module 3, switch opening and closing detection module 4, alternating current leakage detection module 5, multichannel temperature detection module 6, smoke sensing data acquisition module 7 respectively, A item electric energy detection module 1 is connected with A item voltage current detection sensor correspondingly, B item electric energy detection module 2 is connected with B item voltage current detection sensor correspondingly, C item electric energy detection module 3 is connected with C item voltage current detection sensor correspondingly, switch opening and closing detection module 4 is connected with N channel switch detection sensors, alternating current leakage detection module 5 is connected with N channel leakage detection sensors, the multi-channel temperature detection module 6 is connected with the ABC temperature detection sensors of the N channels, the output end of the data acquisition and processing module 8 is sequentially connected with the wireless data transmission module 9 and the remote data server 13, and the remote data server 13 is connected with the mobile terminal 16 or the PC end 15 respectively.
The output end of the data acquisition processing module 8 is also respectively connected with a battery voltage detection and control module 10, an alarm output control module 11 and a switch opening and closing output control module 12.
Battery voltage detects and control module 10 adopts STM32F105 main control chip, and this module effect is the voltage that detects the battery to set up the safe value and guarantee that CPU chip and GPRS chip can normally work, alarm output control module 11 adopts STM32F105 main control chip, the effect one: the anti-theft alarm is used for timely informing security and safety management personnel when the cable is stolen and accidentally disconnected; the second action is as follows: the electric appliance gives an alarm, namely, when dangerous situations such as electric leakage, short circuit, fire and the like occur, electricians and safety management personnel are informed in time; the third action is that: and (4) abnormal alarm, namely timely informing electricians and safety management personnel when abnormal use conditions such as power failure, overload and tripping of the distribution box occur. The switch on/off output control module 12 adopts an STM32F105 main control chip and is used for remotely turning on/off the switch.
The wireless data transmission module 9 is a LORA wireless data transmission module, the built-in chip is SX1278, the wireless data transmission module is small in size, micropower, low in power consumption, high in performance and long in distance, a LORA-to-GPRS wireless gateway module 17 is further connected between the wireless data transmission module 9 and the remote data server 13, the LORA-to-GPRS wireless gateway module 17 is further connected, the GPRS module is a wireless Modem embedded with a GSM/GPRS core unit, and the wireless data transmission module has a complete power management system and a standard serial data interface.
The wireless data transmission module 9 is an NB-IOT wireless data transmission module with a model of WH-NB73, is an embedded terminal for wireless data transmission by using a mobile NB-IOT network, has small volume and simple interface, and can be conveniently integrated on the mainboard equipment of a user.
The A electric energy detection module 1, the B electric energy detection module 2 and the C electric energy detection module 3 all adopt three-phase multifunctional anti-electricity-theft metering chips RN8302 chips.
The switch opening and closing detection module 4 and the alternating current leakage detection module 5 both adopt STM32F105 main control chips, the model of the multi-path temperature detection module 6 is DS18B20, and the model of the smoke sensation data acquisition module 7 is MQ-2-135-3-7-9.
The channel switch detection sensor and the channel leakage detection sensor both adopt RN8302 chips, and the temperature detection sensor of the ABC channel is DS18B20 in model.
The output end of the data acquisition processing module 8 is also connected with an RS485 wired data transmission module 14, and the model of the RS485 wired data transmission module 14 is SP485 EEN.
The utility model discloses block terminal monitored control system based on wireless data transmission technique, data processing end form data acquisition processing module 8 by the treater based on ARMCortex-M3 technical platform, mainly are to carrying out filtering and processing to the data of gathering, and the core purpose calculates timely, reliable testing result. The output control end consists of two parts: the alarm output control module 11 is mainly used for locally prompting and alarming by sound when the conditions of current overload, electric leakage exceeding an alarm value, temperature exceeding the alarm value, smoke sensation exceeding the alarm value, equipment failure and the like occur; and the switch opening and closing output control module 12 is used for cutting off the corresponding controllable switch and cutting off a power supply to ensure safety when the conditions of current overload, electric leakage exceeding an alarm value, temperature exceeding the alarm value, smoke sensation exceeding the alarm value, equipment failure and the like occur, or receiving a switch opening and closing control command from a remote place to perform corresponding controllable switch control. A data transmission system: the data of each LORA sub-node is sent to a wireless data transmission module 9 in a centralized manner and then to a LORA-to-GPRS wireless gateway module 17 mainly through the LORA technology, and the GPRS transmits the data to a remote data server 13 through a public network, so that a manager can check the power utilization condition and state of the distribution box at any time through a mobile phone 16 or a webpage 15; a data receiving end: master equipment ammeter (receiving node) and remote platform or cell-phone end APP, simultaneously, data interface reserves the RS485 wired communication who supports modbus to support the data butt joint of traditional intelligent power consumption management equipment such as other smart electric meters, electric fire detector. The utility model provides a wiring difficulty that exists among the prior art, the unable detection of on-off state, the module pieces up the problem that the integration is complicated and the data transmission cost is higher and the distance is restricted.
The utility model discloses block terminal monitored control system's working process based on wireless data transmission technique, as shown in FIG. 4:
firstly, the current and the voltage of ABC are collected through the A item electric energy detection module 1, the B item electric energy detection module 2 and the C item electric energy detection module 3, the voltage of industrial and civil electricity belongs to strong electricity, so before data collection, strong electricity signals need to be subjected to weak electricity isolation conversion through a mutual inductor (as shown in figure 2), the system calculates apparent power, active power, reactive power, phase difference and electric quantity data through the collected current and voltage data, then the data are transmitted to the data collection processing module 8 through an SPI (serial peripheral interface), and if the data change amplitude is too large, the current data are filtered to obtain real and effective filtering data, because the data with too large change can be interference data caused by factors such as power grid fluctuation; and continuously acquiring smoke sensation data for multiple times through the AD conversion channel, and filtering the smoke sensation data by adopting a depolarized mean value filtering algorithm to obtain effective smoke sensation data. Gather multichannel electric leakage data through special interchange electric leakage detection module 5, because the voltage of industry and civilian electricity belongs to the forceful electric power, consequently before data acquisition, need carry out the isolation conversion of forceful electric power signal through the mutual-inductor and carry out the weak current (as shown in fig. 3), because electric leakage data probably receives the mains interference in the acquisition process, electromagnetic interference's environmental factor is more, consequently gather at a power frequency cycle in the acquisition process and reach 128 data up to, and carry out the average value to data and solve in order to reject the interference data, finally solve actual electric leakage data and transmit data for data acquisition processing module through the serial ports. The data center collects temperature data of the multiple temperature sensors 6 through a line of bus, and according to the change amplitude of the previous data and the current data, if the change amplitude of the data is too large, the current data is filtered to obtain real and effective filtering data, and the data with too large change may be interference data caused by factors such as environmental interference. The switch state is acquired through the switch opening and closing detection module 4, and the voltage of industrial and civil electricity belongs to strong electricity, so that before data acquisition, strong electricity signals are required to be subjected to weak electricity isolation conversion through an optical coupler, and signals are transmitted to an IO port of a data acquisition processing module CPU. The current state of the distribution box is judged through the obtained data of each switch, and the data are judged to need secondary filtering if the states of normal power supply, distribution box power failure, total opening and closing and the like are judged. When the working state is judged to be changed, the data acquisition processing module 8 immediately uploads the data to the remote platform according to the changed state; if the state change is that the distribution box is powered off, the electric leakage and electric energy data are required to be completely reset and uploaded to a remote platform; if the state is changed into the total opening and closing, the leakage data needs to be cleared and uploaded to a remote platform. When the working state is not changed, the data acquisition processing module judges whether a wiring fault is generated or not, and if the wiring fault is generated, the data acquisition processing module immediately uploads fault information to a remote platform; judging whether the data is sent according to a short period or a long period according to the system state and the processed electric energy data, and if the data change exceeds a static change proportion, sending the data according to the short period so as to inform a remote platform of the change condition of the data in time; when the data change is smaller than the static change proportion, the data are sent according to a long period, the original data of the remote platform can represent the current data, and the purpose of lengthening the data sending period is to reduce the sending flow of the data; when the system state is always in the power-off state of the distribution box, the power data are sent in a long period and the data value is 0. Judging whether the leakage data is sent according to a short period or a long period according to the state of the system and the processed leakage data, and if the data exceeds an alarm value, sending the leakage data according to the short period so as to inform a remote platform of the state change condition and the data of the leakage data in time; when the data value is smaller than the alarm value, the data is sent according to a long period, the original data of the remote platform can represent the current state, and the purpose of lengthening the data sending period is to reduce the sending flow of the data; when the system state is always in the power failure or total opening and closing of the distribution box, the leakage data are sent in a long period and the data value is 0. Judging whether the temperature data is sent according to a short period or a long period according to the system state and the processed temperature data, and if the data exceeds an alarm value, sending the data according to the short period so as to inform the state change condition and the data of the temperature data of the remote platform in time; when the data value is smaller than the alarm value, the data is sent according to a long period, the original data of the remote platform can represent the current state, and the purpose of lengthening the data sending period is to reduce the sending flow of the data; when the system state is always in the power-off state or the total opening and closing state of the distribution box, the temperature data are sent in a long period and the data value is 0. Judging whether to send the data according to a short period or a long period according to the system state and the processed smoke feeling data, and if the data exceeds an alarm value, sending the data according to the short period so as to inform a remote platform of the state change condition and the data of the smoke feeling data in time; when the data value is smaller than the alarm value, the data is sent according to a long period, the original data of the remote platform can represent the current state, and the purpose of lengthening the data sending period is to reduce the sending flow of the data; when the system state is always in the power-off state or the total opening and closing state of the distribution box, the smoke sensing data are sent in a long period, and the data value is 0. And judging according to the system state and the acquired battery data, and if the system is normal but the battery voltage is abnormal, immediately uploading battery fault information to a remote platform by the data acquisition and processing module. And the interval information of each data sending time point is updated again, so that the short period and the long-term data sending timing of each parameter can be adjusted conveniently. And judging whether a certain switch is switched on or off according to the electric leakage, the temperature, the smoke sensation and the electric energy data, and if the data exceed the dangerous state, immediately switching off the corresponding power supply switch. And judging whether a control command from the remote platform is received or not, if so, analyzing the command and controlling the analyzed control switches needing to be opened and closed.
The utility model discloses a distribution box monitoring system based on wireless data transmission technology, it combines electric quantity, voltage, electric current, electric quantity, power factor, smoke sense, electric leakage, output control and on-off state's detection, and the integration is integrative in the function, solves the difficulty of the integration of current a plurality of producer modules; meanwhile, the LORA wireless data transmission technology with low cost solves the problems of difficult wiring and incapability of large-area popularization and use due to cost.

Claims (7)

1.A distribution box monitoring system based on a wireless data transmission technology is characterized by comprising a data acquisition and processing module (8), wherein the data acquisition and processing module (8) is an STM32F105 chip, the input end of the data acquisition and processing module (8) is respectively connected with an A item electric energy detection module (1), a B item electric energy detection module (2), a C item electric energy detection module (3), a switch opening and closing detection module (4), an alternating current leakage detection module (5), a multi-path temperature detection module (6) and a smoke sensation data acquisition module (7), the A item electric energy detection module (1) is correspondingly connected with an A item voltage and current detection sensor, the B item electric energy detection module (2) is correspondingly connected with a B item voltage and current detection sensor, the C item electric energy detection module (3) is correspondingly connected with a C item voltage and current detection sensor, and the switch opening and closing detection module (4) is connected with N channel switch detection, the alternating current leakage detection module (5) is connected with N channel leakage detection sensors, the multi-channel temperature detection module (6) is connected with N channel ABC temperature detection sensors, the output end of the data acquisition processing module (8) is sequentially connected with the wireless data transmission module (9) and the remote data server (13), and the remote data server (13) is connected with the mobile terminal (16) or the PC end (15) respectively; the output end of the data acquisition processing module (8) is also respectively connected with a battery voltage detection and control module (10), an alarm output control module (11) and a switch opening and closing output control module (12); the wireless data transmission module (9) is a LORA wireless data transmission module, the built-in chip is SX1278, a LORA-to-GPRS wireless gateway module (17) is further connected between the wireless data transmission module (9) and the remote data server (13), the LORA-to-GPRS wireless gateway module (17) is further connected, and the GPRS module is a wireless Modem embedded with a GSM/GPRS core unit.
2. The distribution box monitoring system based on the wireless data transmission technology according to claim 1, wherein the battery voltage detection and control module (10) adopts an STM32F105 main control chip, the alarm output control module (11) adopts an STM32F105 main control chip, and the switch on-off output control module (12) adopts an STM32F105 main control chip.
3. The distribution box monitoring system based on the wireless data transmission technology as claimed in claim 1, wherein the wireless data transmission module (9) is an NB-IOT wireless data transmission module with a model number WH-NB 73.
4. The distribution box monitoring system based on the wireless data transmission technology as claimed in claim 1, wherein the A-item electric energy detection module (1), the B-item electric energy detection module (2) and the C-item electric energy detection module (3) all adopt a three-phase multifunctional electricity larceny prevention metering chip RN8302 chip.
5. The distribution box monitoring system based on the wireless data transmission technology as claimed in claim 1, wherein the switch opening and closing detection module (4) and the alternating current leakage detection module (5) both adopt STM32F105 main control chips, the model of the multi-path temperature detection module (6) is DS18B20, and the model of the smoke sensation data acquisition module (7) is MQ-2-135-3-7-9.
6. The distribution box monitoring system based on the wireless data transmission technology as claimed in claim 1, wherein the channel switch detection sensor and the channel leakage detection sensor both adopt RN8302 chips, and the temperature detection sensor of channel ABC has a model number of DS18B 20.
7. The distribution box monitoring system based on the wireless data transmission technology as claimed in any one of claims 1 to 6, wherein an RS485 wired data transmission module (14) is further connected to an output end of the data acquisition processing module (8), and the RS485 wired data transmission module (14) is SP485EEN in model.
CN201920817459.9U 2019-05-31 2019-05-31 Distribution box monitoring system based on wireless data transmission technology Active CN210270548U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111510360A (en) * 2020-04-11 2020-08-07 宁夏北斗科技有限公司 Remote multi-channel signal comprehensive acquisition system for electrical facilities
CN111884331A (en) * 2020-06-29 2020-11-03 国家电网有限公司 Device and method for switching control right of static frequency converter SFC (Small form factor converter) for new and old monitoring of pumped storage power station

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111510360A (en) * 2020-04-11 2020-08-07 宁夏北斗科技有限公司 Remote multi-channel signal comprehensive acquisition system for electrical facilities
CN111884331A (en) * 2020-06-29 2020-11-03 国家电网有限公司 Device and method for switching control right of static frequency converter SFC (Small form factor converter) for new and old monitoring of pumped storage power station

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Effective date of registration: 20230704

Address after: 610, Floor 6, Block A, No. 2, Lize Middle Second Road, Chaoyang District, Beijing 100102

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