CN105678666B - Experimental building security and emergency plan issuing system based on Internet of things - Google Patents
Experimental building security and emergency plan issuing system based on Internet of things Download PDFInfo
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Abstract
The invention relates to an experimental building security and emergency plan issuing system based on the Internet of things, which comprises: the system comprises a plurality of laboratory RFID access control units arranged at a laboratory gate, laboratory emergency sensing units arranged in a laboratory and a cloud security center respectively matched with the laboratory RFID access control units and the laboratory emergency sensing units. The invention adopts RFID technology, and achieves the purpose of automatic identification through information transmission between the electronic tag and the reader-writer. The security guard can know the safety state of the surrounding access control in the moving process through the connection of the Internet of things and the mobile network, enables experts familiar with a laboratory to remotely intervene as soon as possible, adopts a short message group sending and telephone group calling method to call teachers and students safety personnel, is provided with a database storing emergency plans, and can improve the emergency handling efficiency by sending instruction groups of the emergency plans to the experts, the teachers and students safety personnel and the security guard, particularly can guide the security guard to deal with emergency events of the laboratory more professionally.
Description
Technical Field
The invention relates to an experimental building security and emergency plan issuing system based on the Internet of things.
Background
In recent years, colleges and universities in China have a tendency of being handled in multiple school districts due to resource optimization and recombination, and many school districts are not even in the same city. In recent years, colleges and universities have added functions of cultural communication and scientific and technical services, are open to society and share teaching resources, so that the structure of personnel in the colleges and the universities is complex, the campus security problem is severe, the campus security traditional mode is changed into a scattered individual experimental building state, the working pressure of security places of the colleges and the universities is increased by times, and the phenomenon of insufficient security human resources of the colleges and the universities occurs.
Under the background, colleges and universities gradually simplify professional security and defense efforts and rely on social strength for security and protection work, which creates new potential safety hazards. Personnel dispatched by security companies are mobile and unfamiliar with laboratories, and cannot promote professional literacy of security personnel through short-term training. When some special laboratories have accidents, security personnel have no profound professional background, and emergency measures possibly adopted are improper, so that the accident loss is enlarged, and even the life safety of the security personnel is endangered.
At present, the alarms adopted by the college experimental buildings mainly comprise the following alarms: audible and visual alarm, radio alarm, closed circuit monitoring alarm, internet alarm, and mobile network alarm. The acousto-optic alarm has poor use effect in an experimental building because the alarm sound is greatly weakened due to the isolation of floors. Because the signal transmission distance of the radio type alarm is limited, signals are easy to interfere with each other when a plurality of alarms work simultaneously, and the reliability is rapidly reduced along with the increase of the communication distance. At present, closed circuit television monitoring is widely applied in colleges and universities, the reliability is higher, but the coaxial cable wiring project cost is high, the information transmission area is closed, only the emergency alarm information can be sent to a security duty room, and people responsible for laboratories cannot be directly informed, so that the emergency disposal efficiency is reduced; the alarm devices of the internet type have many advantages, but the use in the experimental buildings of colleges and universities is limited, the experimental buildings of colleges and universities can only use the dialers of the campus networks such as the rapidity to connect to the campus network, and almost all the alarm devices of the internet type can not be used by the built-in dialers of the campus networks; the mobile network alarm is most flexible, can be connected to the Internet in a GPRS (general packet radio service) or 3G, 4G, WIFI or other wireless modes, can realize remote communication, and is most suitable for experimental buildings in colleges and universities.
Modern college laboratories are more and more complex in types, taking fire as an example, emergency treatment processes of chemical laboratories, germ laboratories, power laboratories and precision instrument experiments are completely different, adopted flame-retardant mechanisms are different, and used fire extinguishing measures are also different. In 2015, 8 and 12 days, fire disasters happen to dangerous goods warehouses in new Tianjin coastal areas, and the fire fighters in the first group arriving at the front line select a traditional water extinguishing mode to suppress the fire behavior in a hurry under the condition that information is unknown. The large amount of water may be the main reason for the explosion of calcium carbide and sodium metal. The "8.12 accidents" collectively caused 104 firefighters to sacrifice. The incident is a warning for the management work of the laboratories of colleges and universities, security personnel are not clear about the internal conditions of the laboratories with sudden accidents, and a conventional water extinguishing mode can be applied to fires of special laboratories, so that larger accidents are caused.
In order to assist security to more surely handle laboratory accidents, when an accident occurs in a special laboratory, besides enabling a laboratory expert to intervene as early as possible, safety personnel of teachers and students should be set in each laboratory. Laboratory experts and teacher and student safety personnel are familiar with the layout of a laboratory, master professional knowledge, can make up for the defect of insufficient security professional knowledge, and can reduce accident loss. However, accidents are often sudden, and how to efficiently schedule laboratory experts and teachers and students who are scattered everywhere becomes a difficult point of a security system.
Entrance guard is an important component of security of experimental buildings in colleges and universities. Through market research, the existing access control systems such as hotel access control systems largely use Mifare one IC S50 cards, only the serial number is used for identifying the identity of a passer, the serial number of the Mifare one IC S50 card is cracked by hackers, and the legal access control card can be cloned by using hacker programs and special S50 cards which can rewrite the serial number, so that the safety problem is formed; some access control systems lack networked centralized management, and each door of the systems is independently arranged and lacks a networking communication function, so that centralized and visual management cannot be realized; most of the access controls lack the design thinking of the internet plus, only incorporate into the centralized management system of the local area network, when the security guard leaves the server for patrol, the security state of the surrounding access controls can not be known in real time.
At present, colleges and universities have various laboratories, too many emergency plans are too complicated, and the emergency plans are stored in a paper file form. The emergency plans of laboratories with different properties are completely different, and even the emergency plans of different accidents in the same laboratory are completely different. Therefore, when an accident happens in a laboratory, the paper documents can be inquired and the correct corresponding scheme can be read without any time.
Disclosure of Invention
The invention aims to provide an experimental building security and emergency plan issuing system based on the Internet of things, so as to overcome the defects in the prior art.
In order to achieve the purpose, the technical scheme of the invention is as follows: an experiment building security protection and emergency plan publishing system based on the internet of things comprises: the system comprises a plurality of laboratory RFID entrance guard units, a laboratory emergency sensing unit and a cloud security center, wherein the laboratory RFID entrance guard units are arranged at a laboratory gate and used for acquiring entrance guard state information of a laboratory, the laboratory emergency sensing unit is arranged in the laboratory and used for acquiring alarm information of the laboratory, and the cloud security center is respectively matched with the laboratory RFID entrance guard units and the laboratory emergency sensing unit;
after receiving the laboratory entrance guard state information uploaded by the laboratory RFID entrance guard unit, the cloud security center updates the display state of the corresponding laboratory gate, sends the updated display state of the laboratory gate to a mobile receiving end of an on-duty security worker, and displays the state of the laboratory gate of each floor of the laboratory building through a gate icon in a visual mode;
after acquiring the laboratory alarm information, the laboratory emergency sensing unit sends an alarm short message to a mobile receiving end of a laboratory expert in charge of the laboratory through a second communication unit, and uploads the laboratory alarm information to the cloud security center; the cloud security center receives the laboratory alarm information uploaded by the laboratory emergency sensing unit, informs a laboratory security worker in a mode of group call of a telephone and group sending of a short message, sends the telephone number of the on-duty security worker to the mobile receiving end of a laboratory expert, acquires a corresponding emergency plan through an emergency plan database which is matched with the cloud security center and is stored with the emergency plan in advance, and sends the emergency plan to the mobile receiving end which is responsible for the on-duty security worker, the laboratory expert and the laboratory security worker of the laboratory.
In an embodiment of the present invention, the laboratory RFID access control unit includes: the system comprises an access card and an access hardware main controller matched with the access card; the access card comprises a S70; entrance guard's hardware main control unit includes: the system comprises an STM32, an RFID card reader, a first GPRS MODEM, an entrance guard electromagnetic lock, an entrance guard state sensor, an alarm buzzer and a first power supply voltage stabilizing module; the first GPRS MODEM is communicated with the cloud security center; the RFID card reader comprises an MF RC500 chip; the first power supply voltage stabilizing module comprises an LM2596 voltage stabilizing chip for converting 12V voltage into 5V and an AMS1117 voltage stabilizing chip for converting 5V voltage into 3.3V.
In an embodiment of the present invention, the lab gate state information includes: entrance guard state, laboratory serial number and entrance guard serial number.
In an embodiment of the present invention, the S70 includes 40 sectors, the capacity of the first sector to the 32 th sector is 64 bytes, and the sectors are divided into 4 blocks, each block having 16 bytes; the block 3 of each sector is a special control area, is used for setting the read-write permission of the key A or the key B to the blocks 0 to 3 of the sector, and comprises three parts of the key A, the key B and a read-write setting code; setting the 18 th sector as the authority checking area of the S70, and completing encryption by: closing the read-write permission of the key A to the 18 th sector block 0, block 1 and block 2; forbidding the key A to pass through the read-write setting code of the block 3 of the modified 18 th sector; forbidding the write permission of the key B to the 18 th sector block 0, block 1 and block 2, and only keeping the read permission; forbidding the write permission of the read-write set code of the key B to the block 3 of the 18 th sector; the entrance guard hardware main controller detects the following contents of S70: detecting whether the secret key B of the 18 th sector of the access control card is correct or not; detecting whether the content stored in the 18 th sector of the access control card is correct or not; and detecting whether the entrance guard card serial number is matched with the entrance guard number.
In an embodiment of the present invention, the access control hardware master controller includes: the system comprises an entrance guard main program section, a door lock state program section, an entrance guard alarm program section and an unlocking program section;
after the door access hardware main controller is electrified, entering a main program segment, and circularly detecting the state of a door lock; when the door lock is detected to be in an open state, entering a door lock state program section for judgment, and when the door is abnormally opened or normally opened and the door lock is not closed for 30 seconds, entering an alarm program section; the alarm program segment uploads the entrance guard number, the door serial number and the door lock state, except that the alarm buzzer sends out an alarm sound at the entrance guard end, the mobile receiving end of the security personnel on duty also sends out an alarm sound;
whether an access card exists is detected in the main program section, if the access card is detected, whether a secret key B of the 18 th sector of the access card is correct is detected, whether the stored data content of the 18 th sector of the access card is correct is detected, otherwise, the access card enters an alarm program section, and the access card enters an unlocking program section after the first two items of verification; and the unlocking program segment uploads the entrance guard serial number and the entrance guard card serial number to the cloud security center, and if the cloud security center verifies that the entrance guard serial number and the entrance guard card serial number are matched with each other, the entrance guard electromagnetic lock is controlled to open the door.
In an embodiment of the present invention, the laboratory emergency sensing unit includes: the second GPRS MODEM, the second power supply voltage stabilizing module, the MC68HC908GP32 processor, the smoke sensor, the high temperature sensor, the door magnetic sensor, the combustible gas sensor, the explosion sensor, the impact sensor, the pyroelectric sensor and the camera are respectively connected with the MC68HC908GP32 processor; the camera is connected with a video sensor; the second GPRS MODEM is communicated with the cloud security center; the second power supply voltage stabilizing module comprises a 5V nickel-hydrogen battery pack and a charging circuit matched with the 5V nickel-hydrogen battery pack; the camera adopts GXT-Y101; the second GPRS MODEM uses GTM 900.
In an embodiment of the present invention, the workflow of the laboratory emergency sensor unit includes: the system comprises a main program segment of a laboratory, an alarm program segment of the laboratory, a short message forwarding program segment, a short message instruction execution program segment and a loop withdrawing circulation program segment;
after the laboratory emergency sensor unit is powered on, entering a main program segment of a laboratory, and circularly detecting the state of each sensor; if a new short message reaches the second GPRS MODEM, entering a short message forwarding program segment, and forwarding the new short message to a hand-moving receiving end of an experimental expert, wherein the method comprises the following steps: the short message instruction and the telephone charge short message of the remote control sensor; if the format in the new short message is the same as the preset short message instruction and the password is correct, entering a short message instruction execution program section; if the short message instruction is a disarming short message, entering a loop-withdrawing loop circulation program segment; if the short message instruction is a monitoring short message, the laboratory emergency sensor unit dials the mobile phone number of a laboratory expert through a second GPRS MODEM to provide 60-second laboratory environment monitoring; if the short message instruction is a defense short message, returning to the main program segment of the laboratory;
in the circulating process of the main program segment of the laboratory, if a sensor returns a high level, the alarm program segment is entered, the camera is controlled to shoot at the first time to obtain a field real-time image, then the laboratory number and the sensor number are uploaded through the second GPRS MODEM, and finally an alarm short message is sent to a laboratory expert, and the experiment number and the sensor number are transmitted through the short message.
In an embodiment of the present invention, the cloud security center includes: the system comprises a first WINSOCK transceiving module, an entrance guard card permission verification module, a second WINSOCK transceiving module, an emergency plan triggering module, a plurality of calculation servers, a multimedia message group server and a laboratory expert and laboratory security personnel, wherein the first WINSOCK transceiving module is matched with the RFID entrance guard unit and used for receiving entrance guard state information of a laboratory, the entrance guard card permission verification module is used for verifying entrance guard state information of the laboratory through an entrance guard number stored in the database server and a matched entrance guard card serial number, the second WINSOCK transceiving module is matched with the laboratory emergency event sensor unit and used for receiving laboratory alarm information, the emergency plan triggering module is used for selecting an emergency plan through a laboratory number and a sensor number in the laboratory alarm information, the calculation servers are used for storing the entrance guard number, the matched emergency plan, the laboratory number and the sensor number, the database server is used for issuing a field real-time image in the laboratory alarm information and a multimedia message group of emergency plan processing steps to laboratory experts and laboratory security personnel And the sending module is an emergency command module used for carrying out short message group sending and telephone group calling on laboratory experts and laboratory security officers.
In one embodiment of the present invention, there are four states of the door icon in the visual interface: 1) normally closing: the entrance guard electromagnetic lock is in a closed state; 2) normally opening: the door is opened from the inside or legally swiped; 3) failure of card swiping: the passer holding the illegal entrance guard card can not enter; 4) forced opening: the door is opened abnormally when the access card is not used; and the third state and the fourth state trigger a mobile receiving terminal of the on-duty security personnel to alarm, and the on-duty security personnel further checks the information corresponding to the door icon by clicking the door icon.
Compared with the prior art, the invention has the following beneficial effects: according to the laboratory security system based on the Internet of things, provided by the invention, the laboratory security system based on the Internet +' can be used for intensively handling the laboratory accident alarm of multiple school zones, the response efficiency of the alarm situation is improved, the accident of a special laboratory is more professionally handled, and the accident harm and loss are timely controlled. The three-layer architecture of the Internet of things is applied, the network layer is constructed by adopting the mobile communication technology, the problem of remote communication is solved at low cost, and a uniform cloud security center is established, so that laboratories with geographical spans of hundreds of kilometers can be intensively managed, expert resources are shared, personnel and materials are uniformly allocated, and accident loss is controlled in time. The invention introduces advanced internet of things technology, enables experts familiar with laboratories to intervene remotely as soon as possible, adopts a short message group sending and telephone group calling method to call teachers and students safety personnel, and sends an instruction group of an emergency plan to the experts, the teachers and students safety personnel and security guards, thereby ensuring that the emergency measures are efficient and correct. The thinking of 'internet +', 'centralization' and 'visualization' is introduced, the RFID technology is adopted to carry out algorithm encryption on the access control card, and the aim of automatic identification is achieved through information transmission between the electronic tag and the reader-writer. And the security guard can still know the security state of the surrounding access control in the moving process by connecting the security guard with the mobile network through the Internet. Rely on the modern sensor that the kind is complete, can realize the perception to the various emergency in laboratory, especially video sensor can catch the environment photo when the emergency takes place to through the mechanism of forwardding of cloud security center, let emergent treatment personnel in time know the laboratory internal conditions, realized the visual management to the laboratory environment. The emergency plans of various accidents of various laboratories of a laboratory building are stored in a database, the automatic retrieval of the emergency plans is realized by using a mode of 'laboratory numbering + sensor numbering', and the instruction issuing of the emergency plans is realized by using a GPRS MODEM, so that the emergency disposal efficiency can be improved, and particularly, the security can be guided to deal with the emergency of the laboratory in a more professional manner.
Drawings
Fig. 1 is an architecture diagram of a system for issuing security protection and emergency plans of an experimental building based on the internet of things.
Fig. 2 is a hardware circuit diagram of the access control master controller according to the present invention.
FIG. 3 is a circuit diagram of an inductive coupling antenna of the RFID card reader of the present invention.
FIG. 4 is a circuit diagram of an interface circuit of the RFID card reader of the present invention.
FIG. 5 is a voltage regulator circuit of the door access hardware power supply according to the present invention.
Fig. 6 is a physical structure diagram of a sector of the S70 chip in the present invention.
Fig. 7 is a flow of the access control hardware according to the present invention.
Fig. 8 is a circuit diagram of the MCU2 in the present invention.
FIG. 9 is a circuit diagram of a power supply in the laboratory emergency sensor of the present invention.
FIG. 10 is a flow chart of the operation of the laboratory emergency sensor according to the present invention.
FIG. 11 is a diagram illustrating software and hardware modules of a cloud security center according to the present invention.
FIG. 12 is a query interface for access status in accordance with the present invention.
Detailed Description
The technical scheme of the invention is specifically explained below with reference to the accompanying drawings.
The invention provides an experimental building security and emergency plan release system based on the Internet of things, which is based on three-layer architecture of perception, network and application of the Internet of things, and the design system architecture is shown in figure 1.
The lowest layer is a sensing layer, a laboratory RFID access control unit is installed on a laboratory gate and used for detecting various states of the laboratory gate, and an MCU1 in an access control module sends the access control state, the laboratory serial number and the gate serial number to a cloud security center through a GPRSMODEM.
The method comprises the following steps that a laboratory emergency sensor is installed in a laboratory and is connected with various wired or wireless sensors, wherein a smoke sensor and a high-temperature sensor are used for sensing fire accidents; the door magnetic sensor is used for sensing an illegal invasion event for opening the door and the window; the combustible gas sensor, the explosion sensor and the impact sensor are used for predicting and sensing an explosion event; the pyroelectric sensor is used for sensing the movement of indoor personnel; the video sensor captures an image of the environment when an emergency occurs and submits the image to the MCU 2. The MCU2 detects the action of the sensor, and sends a real-time image, a laboratory number and a sensor number to the cloud security center through a short message technology. The MCU2 then sends an alarm message directly to the expert responsible for the laboratory to ensure that the laboratory expert knows the dangerous situation at the first time. And in the GPRS bandwidth, it takes 18 s to send 640 x 480 image offers, and in order to enable the MCU to return to the state of the circular detection sensor as soon as possible and avoid missing the perception of the next event, the MCU does not send a live image to an expert, but the cloud security center sends a laboratory environment image in a mass mode in a multimedia message mode.
At the highest application layer, a cloud security center is built:
after the 'cloud security center' receives the access control state information, the states of all gates of the experimental building are refreshed, the gates are communicated with the mobile APP on the security mobile phone, and the states of all floors of the experimental building are displayed in a visual mode.
After the cloud security center receives the indoor alarm information,
1) and retrieving the emergency plan matched with the laboratory number and the sensor number from the database, and scheduling the nearest security guard to go to the site to process the accident through a mobile APP program.
2) A 'cloud security center' calls group calls and short messages group sending and dispatching laboratory experts and teacher and student safety personnel assist security in handling accidents.
3) The cloud security center informs the telephone number of the security guard on duty of the expert in the laboratory by a short message so that the expert can directly command the security guard to carry out rescue work.
4) The 'cloud security center' transmits the multimedia messages in a mass mode of copying 10 numbers, carries the environment image and the image-text information of the simple coping steps, and ensures that laboratory experts and teacher-student safety personnel can receive the image of the accident environment.
The entrance guard unit comprises an entrance guard centralized management program (an upper computer) at the cloud end, entrance guard hardware (a lower computer) and a mobile phone APP mobile terminal of security personnel.
The gate inhibition hardware main controller adopts an STM32F103RBT6 chip with an ARM 7 framework, the main frequency is 72MHz, the gate inhibition hardware main controller has the advantages of low power consumption, ultra-many peripherals and the like, and is a 32-bit high-performance processor based on a Cortex-M3 inner core. The hardware of the entrance guard main controller is shown in fig. 2 and comprises an STM32 minimum system, an RFID card reader, a GPRS MODEM, an entrance guard electromagnetic lock, an entrance guard state sensor, an alarm buzzer, a power supply voltage stabilizing module and the like.
An RFID card reader module of the access control hardware (lower computer) adopts a 13.56MHz non-contact IC card reader-writer with an MF RC500 chip. The MF RC500 is a high-integration TYPEA reader-writer chip produced by Philips company, supports the ISO 14443B standard, has the reading-writing distance of 10cm, and supports the identification of series cards of Mifare one models. The access control Card adopts Philips Standard Card IC Mifare one S70 Card (S70 for short), S70 has a globally unique Card sequence number, the EEPROM is divided into 256 sectors with 4 Kbytes which is 4 times of the previous generation product Mifare one S50 (S50 for short), and the access control Card has the excellent characteristics of strong confidentiality, strong working reliability and strong anti-collision capability in the information transmission process. The design of the inductive coupling antenna of the RFID card reader is shown in figure 3, and the design of the interface circuit of the card reader is shown in figure 4.
The entrance guard's electromagnetic lock needs the 12V power supply, and GPRS MODEM needs the 5V power supply, and the RFID passes the ware and needs the 3.3V power supply, consequently adopts 12V standard power after, through power voltage stabilizing circuit, obtains three kinds of voltages, as shown in figure 5. The voltage of 5V is reduced to 5V by 12V through an LM2596 voltage stabilizing chip. The 3.3V voltage is regulated to 3.3V by the AMS1117 voltage regulation chip.
In this embodiment, the access card uses an S70 chip, the S70 chip has 40 sectors, the capacity of the first 32 sectors is 64 bytes, the 4 sectors are divided into 4 blocks, each block has 16 bytes, the physical structure is shown in fig. 6, a block 3 of the sector is a special control area, the read-write permission of a key a or a key B to blocks 0 to 3 of the sector can be set, and the access card is composed of three parts, namely, the key a, the key B and a read-write setting code. The read-write authority control bit of each block area can be represented by RmSn, and m =1, 2 and 3 of Rm is represented as a control type; sn denotes a block number in the sector S, and n =0, 1, 2, 3. The setting method of the key A or the key B for the block 0-2 reading permission control bits is shown in table 1, the setting method of the key A or the key B for the block 3 reading permission control bits is shown in table 2, the coding of the control bits refers to table 3, each 8 control bits form 1 byte, and 4 bytes form a reading and writing setting code. Therefore, the read-write setting code can determine the read-write access authority of the key A and the key B to each block of the sector, and the authority levels of the key A and the key B can be changed by changing the read-write setting code.
TABLE 1 control bits for read and write permissions of blocks 0, 1, 2
Note: the above table "-" indicates that neither key a nor key B has authority; s = 0-32 sectors; u =0 ~ 2 blocks
TABLE 2 control bit to Block 3 read-write Authority
Note: the above table "-" indicates that neither key a nor key B has authority; s =0 ~ 32 sectors
TABLE 3 encoding of read-write set codes
Note that the upper table _ T represents negation; s represents a sector number; r represents a control bit; u represents a spare bit
In order to ensure the security of the access card, an 18 th sector is set as an authority verification area of the access card, and the encryption intentions are as follows: closing the read-write permission of the key A to the 18 sector block 0, block 1 and block 2; the key A is prohibited from modifying the read-write setting code of the block 3 with 18 sectors, so that the self authority is improved; forbidding the write permission of the key B to 18 sectors of block 0, block 1 and block 2, and only keeping the read permission; and forbidding the writing authority of the key B to the read-write setting code of the block 3 of the 18 th sector, and plugging up the last tampered bug of the 18 th sector.
Table 1 shows that to realize the above-mentioned encryption intention, the control bits "R1S 0, R2S0, R3S 0", "R1S 1, R2S1, R3S 1", "R1S 2, R2S2, and R3S 2" of the sector should be set to "1, 0, 1", "R1S 3, R2S3, and R3S 3" should be set to "1, 1". The binary bit operation is performed by substituting the value into table 3, and the solution is calculated to be "7870F 869".
That is, when the read-write setting code of the 18 th sector is set to be "7870F 869", the key a has no read-write permission for the sector, the key a is completely invalid, and the key B only has read permission and does not have write permission. The 18 th sector cannot be tampered with.
When the entrance guard unit detects the legality of the entrance guard card, three contents are detected: 1) whether the secret key B of the 18 th sector of the access control card is correct or not; 2) whether the content stored in the 18 th sector of the access control card is correct or not; 3) whether the serial number of the access control card is matched with the serial number of the access control unit or not. Compared with the existing access control card, the access control card only detects whether the serial numbers are matched, two more detection items are added, and the access control card used by the system can be effectively prevented from being cloned by a hacker program copying the access control card.
The entrance guard hardware work flow is composed of a main program section, a door lock state program section, an alarm program section and an unlocking program section. After the access control hardware is powered on, the access control hardware enters a main program section. And circularly detecting the state of the door lock, and entering a door lock state program section when the door lock is detected to be in an open state. And when the door is opened abnormally or opened normally and the door lock is not closed for 30 seconds, entering an alarm program section. And (3) detecting whether an access card exists in the main program section, if so, detecting whether the secret key B of the 18 th sector of the access card is correct, detecting whether the stored data content of the 18 th sector of the access card is correct, otherwise, entering an alarm program section, and entering an unlocking program section after the first two items of verification. The unlocking program segment uploads the entrance guard serial number and the entrance guard card serial number to the cloud, and if the cloud program verifies that the entrance guard serial number and the entrance guard card serial number are matched with each other, the electromagnetic lock is controlled, and the door is opened. If above-mentioned process has triggered the warning program section, the warning program section will upload entrance guard's serial number, door serial number, lock state, except sending the chimes of doom at the entrance guard's end, security personnel's mobile APP end also sends the chimes of doom. The access control hardware workflow is shown in figure 7.
Further, in this embodiment, a plurality of external sensors are connected to the MCU2 in the laboratory emergency sensor, and a serial port is also required to be connected to the GPRS MODEM to implement short message transmission and image transmission, so that a single chip of the MC68HC908GP32 type with an extended storage space is selected, and referring to the manufacturer's example, the design circuit diagram is shown in fig. 8. The MCU of the model has 33 multifunctional input and output ports, so that more than 20 sensors can be externally connected. The MCU realizes the communication with the GPRS MODEM through the MAX232 chip. GPRS MODEM selects HUAWEI GTM900, and embedded TCP/IP protocol can simplify difficulty of image transmission. And according to an AT instruction provided by a GPRS MODEM manufacturer, short message sending and image data packet uploading are realized by using an assembly language.
Further, in this embodiment, as shown in fig. 9, the power supply of the laboratory emergency sensor steps down 220V of ac power to 9V, and then converts the voltage into dc power through the bridge rectifier circuit, and then filters the dc power through the high-capacity capacitor to obtain ideal 9V dc power, and outputs stable 6V dc power through the three-terminal voltage regulator circuit. The voltage is reduced by a silicon diode and the 5V nickel-hydrogen battery pack is charged unidirectionally, and the charging saturation cut-off voltage is about 5.4V. The voltage is suitable for stable work of the MCU and the GPRS MODEM. The rechargeable battery is connected in series by four or five batteries with 2500 mAh models, and the sensor can be kept standby for 4 days after power failure.
A camera in the laboratory emergency sensor selects GXT-Y101, the camera shoots a color image under natural light, when the illumination is insufficient, an infrared LED lamp can be automatically started to compensate the illumination, and a black and white image is shot under an infrared mode. When the MCU sends a photographing instruction: "5600360100", the camera completes taking the picture and responds to: "7600360000". The MCU sends an image reading length instruction: "5600340100", camera response: "76003400040000B 4 DC", i.e., indicating that the length of the image is "B4 DC". The MCU sends an image reading instruction: "5600320C 000A 0000 MM 0000 KK KK XX XX", "MM MM" is the start address, and "0000", "KK KK" is the read length, and "B4 DC", "XX XX" is the read interval time (unit millisecond), and "0010" is available. The camera responds with "7600320000 (interval) (image data) (interval) 7600320000". After receiving the image data, the MCU sends out a photographing stopping instruction '5600360103', and the camera responds: "7600360000". In order to shorten the communication time, the image pixels are set to be 640 × 480, a JPEG compression format is selected, and the image volume is about 40 kB.
A HUAWEI GTM900 type GPRS MODEM in the laboratory emergency perceptron is internally provided with a UDP communication enhancement AT instruction, and the development of a wireless data transmission function can be simplified by applying the enhancement instruction. In transferring images, the AT commands are used as follows: (1) configuring APN: AT + CGDCONT =1, "IP", "CMNET". (2) Starting Tcp/IP communication: AT% ETCPIP = "user", "pw". (3) Start UDP: AT% IPOPEN = "UDP", "218.86.123.122", 93, 35. I.e. a local 35 port to a remote IP 93 port. (4) And (3) sending data: AT% IPSEND = "(image data)". (5) And (4) turning off UDP: AT% IPCLOSE. Uploading of 40 kB images using GPRS technology takes about 18 s. The baud rates of the GPRS MODEM and the GXT-Y101 are both set to 115200bps, and because AT commands are different, only one device works AT the same time, so that no conflict occurs.
Laboratory emergency sensor workflow
The working process comprises a main program segment, an alarm program segment, a short message forwarding program segment, a short message instruction execution program segment and a loop withdrawing circulation program segment. As shown in fig. 10. After the sensor is electrified, the sensor enters a main program segment and circularly detects the state of each sensor. If a new short message reaches the GPRS MODEM, entering a short message forwarding instruction program segment, and forwarding the new short message to the mobile phone number of the experimental expert, wherein the mobile phone number comprises the short message instruction of the remote control sensor and the telephone charge short message. If the format in the new short message is the same as the preset short message instruction and the password is correct, entering a short message instruction execution program section. If the short message instruction is a disarming short message, entering a loop-withdrawing loop cycle program segment, and if the short message instruction is a monitoring short message, dialing the mobile phone number of a laboratory expert by the sensor to provide the laboratory environment monitoring for 60 seconds. If the short message instruction is a defense short message, returning to the main program segment. In the cycle process of the main program segment, if a sensor returns a high level, the alarm program segment is entered, the camera is controlled to shoot at the first time, then the laboratory number and the sensor number are uploaded through GPRS, finally an alarm short message is sent to a laboratory expert, and the experiment number and the sensor number are transmitted through the short message.
The short message instruction is exemplified as follows, assuming the password is: 12345678
The disarming instruction is 0#12345678
The defense instruction is 1#12345678
The snoop instruction is 3# 12345678.
Further, in this embodiment, a cloud security center is established in a duty room of a laboratory building, and the structure of the software and hardware modules is shown in fig. 11. Set up two WINSOCK transceiver module and monitor the information that two kinds of terminals of laboratory entrance guard and laboratory emergency perceptron were sent respectively, first WINSOCK transceiver module receives the information that laboratory entrance guard sent, draws the matching relation of entrance guard's serial number and card serial number from the database, if the check-up passes, then notifies the entrance guard to open the electromagnetic lock, if the check-up fails, then notifies the entrance guard to send the alarm sound to notify security personnel to remove APP and send the alarm sound. After receiving the information sent by the laboratory emergency sensor, the second WINSOCK transceiving module extracts the emergency plan matched with the laboratory number and the sensor number from the database, sends the emergency plan to a laboratory expert and a teacher-student safety officer through short messages, and calls the laboratory expert and the teacher-student safety officer in groups. And if the cloud receives the laboratory environment image, the laboratory environment image is sent to laboratory experts and teachers and students security officers in a multimedia message mass-sending mode.
The cloud end arranges that many calculation servers parallel work to can handle a plurality of laboratory alarm situations simultaneously. For example, a certain computing server is randomly drawn by the emergency plan triggering module to take on the function of accepting the alarm condition. The calculation server retrieves the matched emergency plan according to the laboratory number and the sensor number, and converts the emergency plan into: and dispatching three tasks of short message group sending, emergency personnel telephone calling, environment image group sending and multimedia message group sending in an emergency concise step by personnel, and storing a task sequence into a database server.
The emergency command module is internally provided with a HUAWEI GTM900 type GPRS MODEM, after tasks of short message group sending and telephone group calling which are not executed are retrieved from a database, 2# MODEM group sending personnel are applied to dispatch short messages, then the telephone group calling task is executed according to a list table, the mode of disconnection after 10 s of calling is adopted, the actual measurement mobile phone rings for 6 s, the GPRS MODEM detects that the on-off or on-off action exists, and the called personnel are judged to know the alarm condition. The person who does not respond will be called by the system repeatedly until the alarm is relieved.
And a HUAWEI GTM900 type GPRS MODEM is arranged in the multimedia message mass-sending module, after an unexecuted multimedia message mass-sending task is retrieved from a database, concise coping steps in an environment image and an emergency plan are made into a multimedia message PDU data packet, and a 3# MODEM is applied to mass-send the multimedia message to all emergency personnel in a multimedia message mode. The emergency personnel at different positions can receive the same event notice, and the cooperative efficiency is improved. Through tests, at most 10 people can be simultaneously copied when the multimedia message is sent, namely, the multimedia message can be simultaneously sent to 10 mobile phone receiving ends as long as a multimedia message PDU (protocol Data Unit) Data packet is uploaded to a multimedia message gateway, so that the average speed of mass sending of the multimedia message by a multimedia message platform can reach 1.8 s/bar at most and is higher than the average speed of 4.5 s/bar of the short message.
The multimedia message mass sending module calls a fly-to-line multimedia message Control provided by a GPRS MODEM manufacturer by using C #. net programming of Microsoft Visual Studio 2010, creates a PDU (protocol data unit) data packet of a multimedia message, and sends the short message in a mode of submitting the multimedia message PDU data packet to an FSOCX1 object generated by an OCX (object Linking and Embedding Control) Control. The core source code is as follows:
private bool SentMMS(MmsReceived XXGprsModem)
{
String MMSsrv, MMSsut, MMSscx;
MMSsrv = XXGprsModem.Phone.Trim();
MMSscx = txtmmstitle.Text.Trim();
mmsstut = "3206 lab 03 sensor";
if (!(0 == FSOCX1.Sendcx(MMSsrv,
MMSsut, MMSscx, MMSinx)))
show ("multimedia message PDU packet transfer failure") }
XXGprsModem.Index = MMSinx;
smslist.Add(XXGprsModem);
MMSinx++;
return true;
}
And after receiving the state information sent by all the entrance guards, the cloud communicates with the mobile phone APP of the security personnel through the Internet and the mobile network. The mobile phone APP receives event notifications sent by all entrance guards in one parcel to display the real-time state of a security area through a visual interface, and security personnel can know the identity of a passer.
There are four states for the door icon in the visual interface: 1) normally closing: the electromagnetic lock is in a closed state; 2) normally opening: the door is opened from the inside or legally swiped; 3) failure of card swiping: the passer holding the illegal entrance guard card can not enter; 4) forced opening: the door is opened abnormally when the access card is not used. The latter two states both trigger the mobile phone to alarm, and the detailed information can be further known through clicking an icon and an access control state query interface, as shown in fig. 12.
The above are preferred embodiments of the present invention, and all changes made according to the technical scheme of the present invention that produce functional effects do not exceed the scope of the technical scheme of the present invention belong to the protection scope of the present invention.
Claims (8)
1. The utility model provides an experiment building security protection and emergent plan issue system based on thing networking which characterized in that includes: the system comprises a plurality of laboratory RFID entrance guard units, a laboratory emergency sensing unit and a cloud security center, wherein the laboratory RFID entrance guard units are arranged at a laboratory gate and used for acquiring entrance guard state information of a laboratory, the laboratory emergency sensing unit is arranged in the laboratory and used for acquiring alarm information of the laboratory, and the cloud security center is respectively matched with the laboratory RFID entrance guard units and the laboratory emergency sensing unit;
after receiving the laboratory entrance guard state information uploaded by the laboratory RFID entrance guard unit, the cloud security center updates the display state of the corresponding laboratory gate, sends the updated display state of the laboratory gate to a mobile receiving end of an on-duty security worker, and displays the state of the laboratory gate of each floor of the laboratory building through a gate icon in a visual mode;
after acquiring the laboratory alarm information, the laboratory emergency sensing unit sends an alarm short message to a mobile receiving end of a laboratory expert in charge of the laboratory through a second communication unit, and uploads the laboratory alarm information to the cloud security center; the cloud security center receives the laboratory alarm information uploaded by the laboratory emergency sensing unit, informs a laboratory security worker in a mode of group call of a telephone and group sending of a short message, sends the telephone number of the security worker on duty to a mobile receiving terminal of a laboratory expert, acquires a corresponding emergency plan through an emergency plan database which is matched with the cloud security center and is pre-stored with the emergency plan, and sends the emergency plan to the mobile receiving terminal which is responsible for the security worker on duty, the laboratory expert and the laboratory security worker in the laboratory;
the cloud security center includes: the system comprises a first WINSOCK transceiving module, an entrance guard card permission verification module, a second WINSOCK transceiving module, an emergency plan triggering module, a plurality of calculation servers, a multimedia message group server and a laboratory expert and laboratory security personnel, wherein the first WINSOCK transceiving module is matched with the RFID entrance guard unit and used for receiving entrance guard state information of a laboratory, the entrance guard card permission verification module is used for verifying entrance guard state information of the laboratory through an entrance guard number stored in the database server and a matched entrance guard card serial number, the second WINSOCK transceiving module is matched with the laboratory emergency event sensor unit and used for receiving laboratory alarm information, the emergency plan triggering module is used for selecting an emergency plan through a laboratory number and a sensor number in the laboratory alarm information, the calculation servers are used for storing the entrance guard number, the matched emergency plan, the laboratory number and the sensor number, the database server is used for issuing a field real-time image in the laboratory alarm information and a multimedia message group of emergency plan processing steps to laboratory experts and laboratory security personnel And the sending module is an emergency command module used for carrying out short message group sending and telephone group calling on laboratory experts and laboratory security officers.
2. The system of claim 1, wherein the laboratory RFID access control unit comprises: the system comprises an access card and an access hardware main controller matched with the access card; the access control card comprises mifare one ic 70; entrance guard's hardware main control unit includes: the system comprises an STM32, an RFID card reader, a first GPRS MODEM, an entrance guard electromagnetic lock, an entrance guard state sensor, an alarm buzzer and a first power supply voltage stabilizing module; the first GPRS MODEM is communicated with the cloud security center; the RFID card reader comprises an MF RC500 chip; the first power supply voltage stabilizing module comprises an LM2596 voltage stabilizing chip for converting 12V voltage into 5V and an AMS1117 voltage stabilizing chip for converting 5V voltage into 3.3V.
3. The system of claim 1, wherein the lab gate state information comprises: entrance guard state, laboratory serial number and entrance guard serial number.
4. The system of claim 2, wherein the mifare one ic 70 comprises 40 sectors, the capacity of the first to the 32 th sectors is 64 bytes, and the sectors are divided into 4 blocks, each block is 16 bytes; the block 3 of each sector is a special control area, is used for setting the read-write permission of the key A or the key B to the blocks 0 to 3 of the sector, and comprises three parts of the key A, the key B and a read-write setting code; setting the 18 th sector as the authority verification area of the mifare one ic 70, and completing encryption by the following method: closing the read-write permission of the key A to the 18 th sector block 0, block 1 and block 2; forbidding the key A to pass through the read-write setting code of the block 3 of the modified 18 th sector; forbidding the write permission of the key B to the 18 th sector block 0, block 1 and block 2, and only keeping the read permission; forbidding the write permission of the read-write set code of the key B to the block 3 of the 18 th sector; the access control hardware main controller detects the mifare one ic 70 as follows: detecting whether the secret key B of the 18 th sector of the access control card is correct or not; detecting whether the content stored in the 18 th sector of the access control card is correct or not; and detecting whether the entrance guard card serial number is matched with the entrance guard number.
5. The system of claim 4, wherein the access control hardware master controller workflow comprises: the system comprises an entrance guard main program section, a door lock state program section, an entrance guard alarm program section and an unlocking program section;
after the door access hardware main controller is electrified, entering a main program segment, and circularly detecting the state of a door lock; when the door lock is detected to be in an open state, entering a door lock state program section for judgment, and when the door is abnormally opened or normally opened and the door lock is not closed for 30 seconds, entering an alarm program section; the alarm program segment uploads the entrance guard number, the door serial number and the door lock state, except that the alarm buzzer sends out an alarm sound at the entrance guard end, the mobile receiving end of the security personnel on duty also sends out an alarm sound;
whether an access card exists is detected in the main program section, if the access card is detected, whether a secret key B of the 18 th sector of the access card is correct is detected, whether the stored data content of the 18 th sector of the access card is correct is detected, otherwise, the access card enters an alarm program section, and the access card enters an unlocking program section after the first two items of verification; and the unlocking program segment uploads the entrance guard serial number and the entrance guard card serial number to the cloud security center, and if the cloud security center verifies that the entrance guard serial number and the entrance guard card serial number are matched with each other, the entrance guard electromagnetic lock is controlled to open the door.
6. The system as claimed in claim 1, wherein the laboratory emergency sensing unit comprises: the second GPRS MODEM, the second power supply voltage stabilizing module, the MC68HC908GP32 processor, the smoke sensor, the high temperature sensor, the door magnetic sensor, the combustible gas sensor, the explosion sensor, the impact sensor, the pyroelectric sensor and the camera are respectively connected with the MC68HC908GP32 processor; the camera is connected with a video sensor; the second GPRS MODEM is communicated with the cloud security center; the second power supply voltage stabilizing module comprises a 5V nickel-hydrogen battery pack and a charging circuit matched with the 5V nickel-hydrogen battery pack; the camera adopts GXT-Y101; the second GPRS MODEM uses GTM 900.
7. The system of claim 6, wherein the laboratory emergency sensor unit workflow comprises: the system comprises a main program segment of a laboratory, an alarm program segment of the laboratory, a short message forwarding program segment, a short message instruction execution program segment and a loop withdrawing circulation program segment;
after the laboratory emergency sensor unit is powered on, entering a main program segment of a laboratory, and circularly detecting the state of each sensor; if a new short message reaches the second GPRS MODEM, entering a short message forwarding program segment, and forwarding the new short message to a hand-moving receiving end of an experimental expert, wherein the method comprises the following steps: the short message instruction and the telephone charge short message of the remote control sensor; if the format in the new short message is the same as the preset short message instruction and the password is correct, entering a short message instruction execution program section; if the short message instruction is a disarming short message, entering a loop-withdrawing loop circulation program segment; if the short message instruction is a monitoring short message, the laboratory emergency sensor unit dials the mobile phone number of a laboratory expert through a second GPRS MODEM to provide 60-second laboratory environment monitoring; if the short message instruction is a defense short message, returning to the main program segment of the laboratory;
in the circulating process of the main program segment of the laboratory, if a sensor returns a high level, the alarm program segment is entered, the camera is controlled to shoot at the first time to obtain a field real-time image, then the laboratory number and the sensor number are uploaded through the second GPRS MODEM, and finally an alarm short message is sent to a laboratory expert, and the experiment number and the sensor number are transmitted through the short message.
8. The system of claim 1, wherein the door icon in the visual interface has four states: 1) normally closing: the entrance guard electromagnetic lock is in a closed state; 2) normally opening: the door is opened from the inside or legally swiped; 3) failure of card swiping: the passer holding the illegal entrance guard card can not enter; 4) forced opening: the door is opened abnormally when the access card is not used; and the third state and the fourth state trigger a mobile receiving terminal of the on-duty security personnel to alarm, and the on-duty security personnel further checks the information corresponding to the door icon by clicking the door icon.
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