CN110958737A - Wireless inspection system and inspection method for public lighting lamp - Google Patents
Wireless inspection system and inspection method for public lighting lamp Download PDFInfo
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- CN110958737A CN110958737A CN201911384757.4A CN201911384757A CN110958737A CN 110958737 A CN110958737 A CN 110958737A CN 201911384757 A CN201911384757 A CN 201911384757A CN 110958737 A CN110958737 A CN 110958737A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/44—Testing lamps
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The wireless inspection system for the public lighting lamp is characterized by comprising a main control unit, a wireless coordinator and a plurality of terminal control units, wherein each terminal control unit is provided with a lamp interface, electrodeless dimming is performed on the lamp through outputting PWM waves, a current detection circuit is further arranged in each terminal control unit, each current detection circuit is provided with a lamp interface and is connected with the corresponding terminal control unit, wireless communication modules are arranged in the main control unit and the corresponding terminal control units, and information is transmitted through a wireless network which takes the wireless coordinator as a transfer platform. The invention has the advantages that: the system has wide application range, low installation and construction difficulty, can be applied to the transformation of old networks, has strong wireless communication anti-interference performance, can effectively improve the maintenance efficiency of a public lighting system and reduce the inspection cost, and simultaneously reduces the energy consumption of public lighting lamps and energy.
Description
Technical Field
The invention relates to the field of public lighting lamp control.
Background
With the continuous improvement of public lighting conditions in China, the installation amount of lamps is continuously increased. Because public lighting lamps and lanterns are huge in quantity, and lamps and lanterns geographical distribution range is great, the manual inspection that takes at present need consume a large amount of manpower and materials, and to the response speed of trouble slow. In many cases, public lighting conditions are closely related to public safety, and timely diagnosis and timely maintenance of faults are one of the important ways to improve the public safety conditions. At present, most public lighting lamps in China adopt wired control methods such as logic switching and time sequence adjustment, the wired control construction cost is high, wiring is complex, the field construction process is complex, and the safety risk of construction is increased.
Disclosure of Invention
The invention aims to overcome the defects of the existing public lighting wired control system and provides a public lighting lamp wireless inspection system and an inspection method which ensure that the public lighting system realizes the functions of wireless intelligent dimming, automatic lamp fault detection and positioning, active alarm and the like under a wireless communication network.
The technical scheme adopted by the invention is a wireless inspection system for public lighting lamps, which is characterized by comprising a main control unit, a wireless coordinator and a plurality of terminal control units, wherein each terminal control unit is provided with a lamp interface and used for stepless dimming of the lamps by outputting PWM waves, a current detection circuit is also arranged in each terminal control unit, each current detection circuit is provided with a lamp interface and is simultaneously connected with each terminal control unit, and wireless communication modules are arranged in the main control unit and the terminal control units and are used for information transmission through a wireless network which takes the wireless coordinator as a transfer platform.
The invention uses wireless communication technology to realize remote control, overcomes the defects that only timing control can be carried out at present, each lighting lamp is provided with a terminal control unit to carry out electrodeless dimming and current detection on the lamp, and the quality of the lighting lamp is monitored in real time, thereby realizing timely maintenance and ensuring public safety.
The wireless coordinator is a ZigBee wireless coordinator and comprises a processor module, an RF front end, a power management module and external interfaces, wherein the wireless coordinator receives a lamp control signal transmitted by a main control unit, decodes the signal and transmits a control command to a designated terminal control unit in a wireless transmission mode; meanwhile, the alarm signal sent by the terminal control unit is decoded and converted into a wireless signal, and the fault type and the position ID of the lamp are sent to the main control unit through the ZigBee wireless network.
With the rise and rapid development of the internet of things technology in recent years, some lighting systems based on wireless control are also appeared in the lighting field. Most wireless terminal control systems appearing in the market at present are wireless control systems based on Wi-Fi technology, and have the defects of large signal interference, weak anti-interference capability, limited control range, too single function of a wireless controller, lack of necessary automatic fault detection, alarm and positioning functions of public lighting lamps and cannot well meet the construction requirements of intelligent public lighting systems. The system is lack of a real-time brightness adjusting function, so that the public lighting system cannot timely provide public lighting with proper brightness, and simultaneously, due to over lighting and low manual inspection efficiency, a large amount of electric energy is wasted and the management and maintenance cost is increased. The wireless lighting control system adopts a wireless communication means based on the ZigBee technology, enhances the capacity of resisting external signal interference, realizes the functions of remote stepless dimming, automatic inspection and the like on the lamp through the terminal control unit, and establishes the wireless lighting control system which can better meet the public lighting quality requirement and has the functions of energy conservation and efficiency improvement.
The main control unit is composed of a main control chip and related peripheral circuits thereof, a wireless router (ZigBee router) and a terminal display control screen, and mainly completes the sending of illumination signals, the summarization and processing of fault information and the real-time display of the whole operation condition; meanwhile, the main control unit is connected with the cloud end through the internet, a high-level management network platform system is established, and a remote supervision function is achieved.
The user can receive the fault alarm information in real time at the cloud end and check the whole operation condition of the current system conveniently.
The terminal control unit is composed of a control chip and related peripheral circuits, a ZigBee wireless communication module, a current detection circuit and a pwm output module, and the wireless communication modules are used for transmitting signal streams between different terminal control units and the main control unit.
The invention also provides a terminal control unit for each lighting lamp as a control mechanism at the bottommost layer, so that the system can conveniently modify and upgrade the prior lighting system without replacing the lighting lamp and a power supply line, the lighting lamp is subjected to stepless dimming function by outputting PWM waves, and the running state of the lamp is judged by detecting the current of the lighting lamp: when the lamp receives the operation command, but the real-time power is zero, the lamp is possibly damaged, the damaged fault information of the lamp is immediately uploaded, and the position ID of the damaged lamp is uploaded together, so that maintenance personnel can conveniently and directly go forward to maintain, and normal public lighting can be recovered as soon as possible; when the lamp receives the operation command and the measured real-time power is larger than or smaller than the normal power parameter range, the power supply of the lamp is cut off immediately to protect the lamp, the alarm information of abnormal operation is uploaded, and a maintenance department is informed to dispatch people to repair the fault in time, so that the loss is reduced.
Specifically, a CC2530 chip is used as a main control chip of the hardware selection main control unit, and a ZigBee wireless transceiver carried by the core of the chip is used for realizing the wireless transceiving function of signals; the main control chip of the terminal control unit selects an STM32F103 chip, and is provided with a wireless communication module matched with a ZigBee wireless transceiver of a CC2530 chip, the STM32F103 chip sends a control command and a patrol instruction to the wireless communication module through a serial port, the transfer through a wireless coordinator is realized, wireless information transmission can be realized by two wireless communication modules of the main control unit and the terminal control unit, the main control unit and the terminal control unit respectively comprise a rectifier for converting 220V into 24V and a power module for converting 24V into a voltage stabilizing module for converting 3.3V, through respective power modules, a direct current stabilized voltage power supply required by a controller is obtained from 220V alternating current commercial power, a lamp interface is further arranged in the rectifier, wherein the terminal control unit is also connected with a PWM output and current detection module and is respectively used for controlling the brightness of a lamp and detecting the running state of the lamp.
A wireless inspection method for public lighting lamps comprises the following operation steps: a) carrying out network initialization: firstly, determining a network coordinator through channel scanning, and completing configuration of a network ID after channel detection is carried out to confirm that no strong interference exists; b) the method comprises the steps that nodes join a network through a coordinator, and specifically comprises the steps of searching the network coordinator, sending an association request command, and waiting for the coordinator to process and send a data request command; c) after the wireless network is built and the signals can be normally transmitted, and the automatic configuration of the network ID is automatically completed in the network, each module starts to send and receive data information through the wireless network.
On the basis of the hardware design, the invention completes the matched software program design to achieve the expected control effect.
Each module sends and receives data information through a wireless network, the data transmission adopts a chain transmission mode, the system judges the distance between two nodes according to the ID of a terminal control unit sending data and the ID of a target unit, and when the nodes are adjacent, the nodes are directly sent to the target unit; when the node sending data has a spacing node between the node sending data and the destination node, the system calculates the optimal path for transmission, and the node sending data transmits the information to be sent to the adjacent wireless node closest to the target unit, and then the adjacent node continuously performs the chain transmission mode step by step to the destination node; because the transmitted data contains the IDs of the original transmitting node and the destination transmitting node, other nodes can perform corresponding processing on the information according to the ID information after decoding the data. In addition, the sent link has a plurality of paths, so that the reliability of transmission can be effectively ensured, and the condition of information loss can not occur. The main controller can complete information exchange and control command receiving and sending with a terminal controller on any wireless node no matter far or near in the network through the wireless transmission mode, can send brightness adjustment, power switch and fault detection commands to one or more devices at any time, and can receive information such as lamp running state, real-time power, fault type and ID sent by the nodes. A large number of nodes are supported by a ZigBee wireless ad hoc network, and the advantage of low network complexity is utilized to carry out information interconnection on a large number of public lighting equipment and a control center at the bottom layer, and a common ZigBee network topology structure has a tree shape, a star shape and a network type. The ZigBee wireless ad hoc network is utilized, a brand-new chain type networking structure is adopted, and the structure can greatly expand the distance of ZigBee communication and the reliability of data transmission
Encrypting the wireless transmission signal, and jumping the ZigBee coordinator to a channel with smaller interference for communication through detecting and scanning channel energy; the data to be transmitted is encrypted specifically to ensure the uniqueness of the data format of the transmission content, and the data decoding can be completed after the receiving end receives the transmitted information and passes through the check code, otherwise, the data retransmission is required.
Due to the wide spread of wireless networks represented by WLANs in recent years, the current wireless networks are more crowded than before, and wireless communication is more easily interfered by signals in close frequency bands, so the operation quality of the whole system is directly determined by the strength of the anti-interference capability. In order to improve the anti-interference capability of the wireless transmission of the system, an encryption step is added in the communication, and the integrity of data transmission can be effectively improved through the steps of encrypting the data transmitted in the wireless network before sending and verifying and decoding the data during receiving, so that the anti-interference performance of the wireless transmission is improved.
The encryption processing means that an encryption step is added in communication, and the specific implementation method comprises the following steps of firstly, initially replacing 64-bit plaintext information and 64-bit secret key information which need to be sent, dividing the replaced 64-bit data information into a left part and a right part of each 32-bit by ①, carrying out ③ 16 rounds of iteration, transforming the right part under the action of a sub-key in each round, carrying out bitwise XOR on the obtained 32-bit data and the left part, taking the generated 32-bit data as the right part of the next round of iteration, directly taking the original right part as the left part of the next round of iteration, but not carrying out left-right interchange in the 16 th round (last round), and carrying out reverse initial replacement on the 64-bit data after 16 rounds of iteration by ④ to obtain a ciphertext.
The decryption algorithm in the wireless transmission process is the same as the encryption algorithm, only the sequence of the sub-keys is opposite, namely K16, K15, … and K1, 64-bit ciphertext is used as plaintext input during decryption, the sub-key K16 is used for the 1 st decryption iteration, the sub-key K15 and … … is used for the 2 nd decryption iteration, the K1 is used for the 16 th decryption iteration, the 64-bit plaintext is output finally, after the data is processed by adopting the algorithm, the data is transmitted in a frequency hopping transmission mode, and partial frame loss when partial frequency bands are interfered is prevented.
The invention has the advantages that: the system has wide application range, low installation and construction difficulty, can be applied to the transformation of old networks, has strong wireless communication anti-interference performance, can effectively improve the maintenance efficiency of a public lighting system and reduce the inspection cost, and simultaneously reduces the energy consumption of public lighting lamps and energy.
FIG. 1 is a diagram illustrating a state of use of the present invention;
FIG. 2 is a three-layer structure diagram of a ZigBee wireless network;
FIG. 3 is a block diagram of the hardware components of the overall wireless lighting control system;
FIG. 4 is a hardware composition block diagram of a ZigBee terminal control unit;
FIG. 5 is a block diagram of the main routine of a wireless network coordinator networking process;
FIG. 6 is a flow chart of an encryption algorithm for a wireless network algorithm;
wherein: the intelligent control system comprises a main control unit 1, a ZigBee router 11, a wireless coordinator 2, a terminal control unit 3, a wireless communication module 31 and a lamp 4.
Detailed Description
The present invention is described in detail below with reference to the drawings, which illustrate examples that enable those skilled in the art to understand the present invention, but do not limit the present invention in any way.
As shown in figure 1, the wireless inspection system for public lighting lamps comprises a main control unit 1, a wireless coordinator 2 and a plurality of terminal control units 3, wherein each terminal control unit comprises a terminal controller consisting of a control chip and related peripheral circuits, a ZigBee wireless communication module (wireless terminal node), a current detection circuit and a pwm output module, each terminal control unit is provided with a lamp interface connected with a drive circuit of an LED lighting lamp, the lamp is subjected to electrodeless dimming by outputting PWM waves, a 24V direct current controllable power supply supplies power to a lamp interface through a current detection circuit, meanwhile, a sampling output signal line of the current detection circuit is connected with a terminal controller, wireless communication modules are arranged in the main control unit and the terminal control unit, and information is transmitted between different terminal control units and the main control unit through a wireless network which takes a wireless coordinator as a transfer platform.
The main control unit is mainly used for sending illumination signals, summarizing and processing fault information and displaying the whole operation condition in real time; meanwhile, the main control unit is connected with the cloud end through the internet, a high-level management network platform system is established, and a remote supervision function is achieved.
The user can receive the fault alarm information in real time at the cloud end and check the whole operation condition of the current system conveniently.
The wireless coordinator is a ZigBee wireless coordinator and comprises a processor module, an RF front end, a power management module and external interfaces, wherein the wireless coordinator receives a lamp control signal transmitted by a main control unit, decodes the signal and transmits a control command to a designated terminal control unit in a wireless transmission mode; meanwhile, the alarm signal sent by the terminal control unit is decoded and converted into a wireless signal, and the fault type and the position ID of the lamp are sent to the main control unit through the ZigBee wireless network.
The ZigBee technology is a two-way wireless communication technology with low power consumption, low time delay and low cost. The ZigBee wireless communication method is a short-distance low-power consumption wireless communication technology based on the IEEE802.15.4 standard. Two physical layers are defined in the ieee802.15.4 standard, and can communicate in three frequency bands of 868MHz, 915MHz and 2.4 GHz.
Common ZigBee network topologies have tree, star, and network types. Different topological structures can be selected according to different use scenes, but generally, a tree-shaped hierarchical control structure is required to be used in a large range, in order to strengthen the transmission range of the tree-shaped hierarchical control structure, the invention creatively adopts a chain networking mode to expand the effective transmission range, the structure of the tree-shaped hierarchical control structure is shown in figure 2, and a ZigBee router, a ZigBee wireless coordinator and a ZigBee wireless communication module are in wireless connection to finish signal transmission.
As shown in fig. 3 and 4, a CC2530 chip is used as a main control chip of the main control unit, and a ZigBee wireless transceiver (also called a ZigBee router) provided in a core of the chip is used to implement a wireless transceiving function of signals; the main control chip of the terminal control unit selects an STM32F103 chip and is provided with a wireless communication module matched with a ZigBee wireless transceiver of a CC2530 chip, the STM32F103 chip sends a control command and a patrol command to the wireless communication module through a serial port, the two wireless communication modules of the main control unit and the terminal control unit realize wireless information transmission through the transfer of a wireless coordinator, the main control unit and the terminal control unit both comprise a rectifier converting 220V into 24V and a power supply module converting 24V into 3.3V and a voltage stabilizing module, a direct current stabilized voltage supply required by the controller is obtained from 220V alternating current commercial power through the respective power supply modules and is used as a direct current driving power supply required by the main control unit, the terminal control unit and a lamp, a power supply interface is also arranged in the rectifier, the output 24V direct current controllable power supply is connected with the lamp interface through a series current detection module, wherein the terminal control unit is also connected with an ADC sampling signal interface of a PWM output and a current detection module, respectively used for controlling the brightness of the lamp and detecting the running state of the lamp.
As shown in fig. 5, a wireless inspection method for public lighting fixtures comprises the following operation steps: a) carrying out network initialization: firstly, determining a network coordinator through channel scanning, and completing configuration of a network ID and establishment of a ZigBee wireless network after channel detection is carried out to confirm that no strong interference exists; b) the method comprises the steps that nodes join a network through a coordinator, and specifically comprises the steps of searching the network coordinator, sending an association request command, and waiting for the coordinator to process and send a data request command; c) after the zigbee wireless network is built and the normal transmission of the signal is confirmed, the automatic configuration of the network ID is automatically completed in the network, and then all the modules start to send and receive data information through the wireless network.
After the hardware configuration is completed, the networking task is completed through software programming.
Each module sends and receives data information through a wireless network, the data transmission adopts a chain transmission mode, the system judges the distance between two nodes according to the ID of a terminal control unit sending data and the ID of a target unit, and when the nodes are adjacent, the nodes are directly sent to the target unit; when the node sending data has a spacing node between the node sending data and the destination node, the system calculates the optimal path for transmission, and the node sending data transmits the information to be sent to the adjacent wireless node closest to the target unit, and then the adjacent node continuously performs the chain transmission mode step by step to the destination node; because the transmitted data contains the IDs of the original transmitting node and the destination transmitting node, other nodes can perform corresponding processing on the information according to the ID information after decoding the data. In addition, the sent link has a plurality of paths, so that the reliability of transmission can be effectively ensured, and the condition of information loss can not occur. The main controller can complete information exchange and control command receiving and sending with a terminal controller on any wireless node no matter far or near in the network through the wireless transmission mode, can send brightness adjustment, power switch and fault detection commands to one or more devices at any time, and can receive information such as lamp running state, real-time power, fault type and ID sent by the nodes. A large number of nodes are supported by a ZigBee wireless ad hoc network, and the advantage of low network complexity is utilized to carry out information interconnection on a large number of public lighting equipment and a control center at the bottom layer, and a common ZigBee network topology structure has a tree shape, a star shape and a network type. The ZigBee wireless ad hoc network is utilized, a brand-new chain type networking structure is adopted, and the structure can greatly expand the distance of ZigBee communication and the reliability of data transmission
Encrypting the wireless transmission signal, and jumping the ZigBee coordinator to a channel with smaller interference for communication through detecting and scanning channel energy; the data to be transmitted is encrypted specifically to ensure the uniqueness of the data format of the transmission content, and the data decoding can be completed after the receiving end receives the transmitted information and passes through the check code, otherwise, the data retransmission is required.
The use of wireless communications can be subject to more complex interference than ever before, as the network coverage of the current society is greatly increased. In order to improve the anti-interference capability of the wireless transmission of the system, an encryption step is added in the communication, and an anti-interference wireless communication method is designed, so that the wireless public lighting control can be smoothly carried out.
The encryption processing means that an encryption step is added in communication, and the specific implementation method comprises the following steps of firstly, initially replacing 64-bit plaintext information and 64-bit key information which need to be sent, wherein each eighth bit is a parity bit, and an actual effective key is 56 bits, ① is used for initially replacing the 64-bit data information which needs to be encrypted, ② is used for dividing the replaced data into a left part and a right part of each 32 bits, ③ is used for 16 rounds of iteration, in each round, the right part is transformed under the action of a sub-key, the obtained 32-bit data and the left part are subjected to bitwise XOR, the generated 32-bit data is used as the right part of the next round of iteration, the original right part is directly used as the left part of the next round of iteration, but the 16 th round (the last round) is not subjected to left-right interchange, ④ is used for performing reverse initial replacement on the 64-bit data which are subjected to 16 rounds of iteration, and the obtained result is a ciphertext.
The decryption algorithm in the wireless transmission process is the same as the encryption algorithm, only the sequence of the sub-keys is opposite, namely K16, K15, … and K1, 64-bit ciphertext is used as plaintext input during decryption, the sub-key K16 is used for the 1 st decryption iteration, the sub-key K15 and … … is used for the 2 nd decryption iteration, the K1 is used for the 16 th decryption iteration, the 64-bit plaintext is output finally, after the data is processed by adopting the algorithm, the data is transmitted in a frequency hopping transmission mode, and partial frame loss when partial frequency bands are interfered is prevented.
The invention has the advantages that: the system has wide application range, low installation and construction difficulty and strong wireless communication anti-interference performance, can effectively improve the maintenance efficiency of the public lighting system and reduce the inspection cost, and simultaneously reduces the energy consumption of public lighting lamps and energy.
Claims (10)
1. A wireless inspection system for public lighting lamps is characterized by comprising a main control unit, a wireless coordinator and a plurality of terminal control units, wherein each terminal control unit is provided with a lamp interface and used for stepless dimming of the lamps by outputting PWM waves, a current detection circuit is further arranged in each terminal control unit, each current detection circuit is provided with a lamp interface and is connected with the corresponding terminal control unit, wireless communication modules are arranged in the main control unit and the corresponding terminal control units, and information is transmitted through a wireless network with the wireless coordinator as a transfer platform.
2. The wireless inspection system according to claim 1, wherein the wireless coordinator is a ZigBee wireless coordinator and comprises a processor module, an RF front end, a power management module and external interfaces, and the wireless inspection system transmits a control command to a designated terminal control unit in a wireless transmission mode after receiving a lamp control signal transmitted by the main control unit and decoding the signal; meanwhile, the alarm signal sent by the terminal control unit is decoded and converted into a wireless signal, and the fault type and the position ID of the lamp are sent to the main control unit through the ZigBee wireless network.
3. The wireless inspection system for public lighting lamps according to claim 1, wherein the main control unit is composed of a main control chip and related peripheral circuits thereof, a wireless communication router and a terminal display control screen, and the main control unit mainly completes sending of public lighting signals, summarizing and processing of fault information and real-time display of the whole operation condition; meanwhile, the main control unit is connected with the cloud end through the internet, a high-level management network platform system is established, and a remote supervision function is achieved.
4. The wireless inspection system according to claim 1, wherein the terminal control unit comprises a control chip and related peripheral circuits, a ZigBee wireless communication module, a current detection circuit and a pwm output module, and wireless communication modules are used for transmitting signal streams between different terminal control units and the main control unit.
5. The wireless inspection system for the public lighting lamps according to claim 1, wherein a CC2530 chip is used as a main control chip of the main control unit, and a ZigBee wireless transceiver provided by the core of the chip is used for realizing a wireless signal receiving and transmitting function; the main control chip of the terminal control unit selects an STM32F103 chip, and is provided with a wireless communication module matched with a ZigBee wireless transceiver of a CC2530 chip, the STM32F103 chip sends a control command and a patrol instruction to the wireless communication module through a serial port, the transfer through a wireless coordinator is realized, wireless information transmission can be realized by two wireless communication modules of the main control unit and the terminal control unit, the main control unit and the terminal control unit respectively comprise a rectifier for converting 220V into 24V and a power module for converting 24V into a voltage stabilizing module for converting 3.3V, through respective power modules, a direct current stabilized voltage power supply required by a controller is obtained from 220V alternating current commercial power, a lamp interface is further arranged in the rectifier, wherein the terminal control unit is also connected with a PWM output and current detection module and is respectively used for controlling the brightness of a lamp and detecting the running state of the lamp.
6. A method for performing wireless inspection by using a wireless inspection system for public lighting lamps according to any one of claims 1 to 5, wherein the operation steps are as follows: a) carrying out network initialization: firstly, determining a network coordinator through channel scanning, and completing configuration of a network ID after channel detection is carried out to confirm that no strong interference exists; b) the method comprises the steps that nodes join a network through a coordinator, and specifically comprises the steps of searching the network coordinator, sending an association request command, and waiting for the coordinator to process and send a data request command; c) after the wireless network is built and the signals can be normally transmitted, and the automatic configuration of the network ID is automatically completed in the network, each module starts to send and receive data information through the wireless network.
7. The wireless inspection method for the public lighting lamps according to claim 6, wherein the modules send and receive data information through a wireless network, the data transmission adopts a chain transmission mode, the system judges the distance between two nodes according to the ID of a terminal control unit sending data and the ID of a target unit, and when the nodes are adjacent, the nodes are directly sent to the target unit; when the node sending data has a spacing node between the node sending data and the destination node, the system calculates the optimal path for transmission, and the node sending data transmits the information to be sent to the adjacent wireless node closest to the target unit, and then the adjacent node continuously performs the chain transmission mode step by step to the destination node; because the transmitted data contains the IDs of the original transmitting node and the destination transmitting node, other nodes can perform corresponding processing on the information according to the ID information after decoding the data.
8. The wireless inspection method for the public lighting lamps according to claim 6, characterized in that wireless transmission signals are encrypted, and a ZigBee coordinator jumps to a channel with less interference for communication through detection and scanning of channel energy; the data to be transmitted is encrypted specifically to ensure the uniqueness of the data format of the transmission content, and the data decoding can be completed after the receiving end receives the transmitted information and passes through the check code, otherwise, the data retransmission is required.
9. The wireless inspection method for the public lighting lamps as claimed in claim 7, wherein the encryption processing means that an encryption step is added in communication, and the specific implementation method comprises the following steps of firstly, carrying out initial permutation on 64-bit plaintext information and 64-bit key information to be transmitted, dividing the permuted data into a left part and a right part of each 32-bit, ③ carrying out 16 rounds of iteration, carrying out transformation on the right part under the action of a subkey in each round, carrying out bitwise XOR on the obtained 32-bit data and the left part, taking the generated 32-bit data as a right part of next round of iteration, directly taking the original right part as a left part of the next round of iteration, but not carrying out left-right permutation in the 16 th round, and carrying out inverse initial permutation on the 64-bit data after 16 rounds of iteration by ④ to obtain a ciphertext.
10. The wireless inspection method for the public lighting lamps according to claim 8, wherein a decryption algorithm in a wireless transmission process is the same as an encryption algorithm, only the sequence of the sub-keys is opposite, namely K16, K15, … and K1, 64-bit ciphertext is used as plaintext input in decryption, the sub-key K16 is used in the 1 st decryption iteration, K15 and … … are used in the 2 nd decryption iteration, K1 is used in the 16 th decryption iteration, the 64-bit plaintext is output finally, after the data are processed by the algorithm, the data are transmitted in a frequency hopping transmission mode, and partial frame loss caused by interference in partial frequency bands is prevented.
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