Anti-data tampering environmental monitoring system

Abstract

The present invention provides an environmental monitoring system that prevents data tampering. The system mainly includes environmental monitoring sensors, light-emitting devices, cameras, monitoring terminals and other equipment. The system simultaneously collects environmental data and on-site video data including environmental monitoring sensors and light-emitting devices, and stores them separately; operators can retrieve and compare environmental data and video data through the monitoring terminal to find data anomalies. The system protects environmental data throughout the process from data collection, transmission and storage, effectively preventing data from being forged and tampered with, and solving security problems existing in existing environmental monitoring systems. The system is easy to implement and has high reliability, and has broad application prospects in the fields of production safety supervision, environmental protection supervision, public health supervision, etc.

Description

Technical Field

[0001] The invention relates to an environmental monitoring system for preventing data tampering, and the system mainly relates to technical fields such as automatic control, communication, and data protection. Background Art

[0002] Environmental monitoring includes monitoring of pollutant gas emissions, sewage emissions, flammable and explosive production environment, geological monitoring, motor vehicle emissions, and urban water supply quality. Environmental data is collected by sensors, transmitted and stored in digital form. The data structure of pure digital form is simple, but it is easy to be tampered with. Taking coal mine underground gas monitoring data as an example, the coal production industry is high-risk, and the death rate of personnel in gas accidents among major accidents in mines is the highest. In order to ensure production safety, the state requires coal mines to be equipped with gas monitoring systems, and key data must be uploaded to the safety production supervision and management department, which effectively reduces the incidence of gas accidents. However, the existing gas monitoring system has many links in the data collection and transmission process, which needs to go through data substations, relay equipment, underground switches, and surface switches. There is a risk of tampering in each link of the transmission, and due to the simple data structure, the stored historical data is also easy to be forged and tampered with. When the data in the data collection and transmission links are tampered with, the safety production supervision and management department cannot effectively monitor the safety hazards of coal mine gas accidents, let alone obtain coal mine accident information in a timely manner; when the historical data stored in the storage device is forged or tampered with, the accident investigation department cannot obtain effective evidence of the cause of the accident, which affects the accident investigation and accountability. The existing firewall technology only protects the transmission data and access within the local area network and the Internet, and cannot prevent data tampering in the underlying data collection and transmission links, nor can it guarantee that the stored data is not illegally accessed and tampered by hackers. In addition, in many cases, the data is tampered by the first-level data manager himself. It is difficult for the existing environmental monitoring system to prevent such violations and illegal acts. In addition to the field of safety production supervision, similar data security issues also exist widely in the fields of environmental protection supervision and public health supervision. Therefore, a new technology and system is needed to protect environmental data from all aspects of data collection, transmission and storage, effectively ensure the security of environmental data, and effectively avoid accidents such as illegal production. Summary of the invention

[0003] The present invention provides an anti-data tampering environment monitoring system, which embeds environmental data into monitoring video data, protects environmental data from all aspects of data collection, transmission and storage, and effectively prevents human tampering of data. The system includes at least one environmental monitoring sensor, at least one light emitting device, at least one camera, at least one data storage device, at least one video storage device, at least one monitoring terminal and a data network;

[0004] The environmental monitoring sensor, camera, data storage device, video storage device and monitoring terminal are connected to a data network;

[0005] The environmental monitoring sensor is used to collect environmental data, connect to the light-emitting device through a digital communication interface, connect to a data network through a network interface, and send environmental data to the light-emitting device and the data storage device through the digital communication interface and the data network respectively;

[0006] The light emitting device receives environmental data transmitted by the environmental monitoring sensor through the digital communication interface, converts the environmental data into an optical signal for transmission, and the environmental monitoring sensor does not transmit new environmental data before the transmission of the optical signal is completed;

[0007] The camera is responsible for video acquisition, the video acquisition range includes environmental monitoring sensors and light-emitting devices, the acquired video content includes light signals emitted by the light-emitting devices, and the camera communicates with the video storage device through a data network;

[0008] The data storage device receives and stores environmental data sent by the environmental monitoring sensor, and provides environmental data query services for the monitoring terminal;

[0009] The video storage device receives and stores the video data sent by the camera, and provides a video data query service for the monitoring terminal;

[0010] The monitoring terminal has the function of simultaneously retrieving and displaying the environmental data stored in the data storage device and the video data stored in the video storage device, identifying the optical signal in the video data to obtain the analysis data, and comparing the environmental data in the same segment based on the analysis data. If the data are different, it is determined that the environmental data has been tampered with.

[0011] 1. The anti-data tampering environment monitoring system further includes: the environment monitoring sensor is a digital sensor, which has the function of converting environmental parameters into digital data.

[0012] 2. The anti-data tampering environmental monitoring system further includes: the environmental monitoring sensor includes an environmental monitoring sensor with a data display screen, and the video content collected by the camera includes environmental data text information displayed on the environmental monitoring sensor display screen.

[0013] 3. The anti-data tampering environmental monitoring system further includes: the light-emitting device includes a light-emitting element, and the light-emitting device sends a light signal by controlling the light-emitting element to turn on and off, and the minimum interval time between the light-emitting element turning on and off is higher than the interval time between each frame of the video captured by the camera.

[0014] 4. The anti-data tampering environmental monitoring system further includes: the light-emitting device includes a visible light emitting element or an infrared light emitting element. When the infrared light emitting element is used to send a light signal, the camera adopts a camera with an infrared light collection function; the visible light emitting element of the system includes light-emitting elements of multiple colors, which are encoded by different color combinations.

[0015] 5. The anti-data tampering environment monitoring system further includes: the environment monitoring sensor, camera, data storage device and video storage device all have a clock module and a time recording function; the environment data transmitted by the environment monitoring sensor includes the time information of data acquisition; the camera has a subtitle adding function, and the sent video data contains subtitles with video acquisition time and location information. The data storage device and video storage device index and store the received data according to the time provided by the clock module.

[0016] 6. The anti-data tampering environment monitoring system further includes: the system further includes a timing device, which is used to uniformly time the clock modules of the environment monitoring sensors, cameras, data storage devices and video storage devices.

[0017] 7. The anti-data tampering environment monitoring system further includes: the camera includes a camera that outputs analog signals. When a camera that outputs analog signals is used, the camera and the video storage device are connected to a video optical terminal, and the video signal is transmitted through the video optical terminal and the optical fiber.

[0018] The anti-data tampering environment monitoring system uses a light-emitting device to synchronously embed the data collected by the sensor into the monitoring video signal through light flashing, and at the same time, adds the time data processed by clock synchronization to the video data, effectively ensuring the synchronization of the collected data and the video data. Due to the large amount of information and complex structure of the video signal data, it is extremely difficult and costly to forge and tamper with the video, and it is even more impossible to forge and tamper with a large amount of historical data, especially analog video signals, which are more complex and more difficult to forge and tamper with. At the same time, the technical solution of the display screen of the camera collecting environmental monitoring sensor data is proposed in the content of the invention, which further increases the difficulty of forging and tampering with the video data and further improves the security of the system. The synchronously stored video data is used to verify and compare with the stored environmental monitoring data. If the data is different, it can be found that the data has been forged and tampered, which solves the data reliability and security problems that cannot be solved by the existing environmental monitoring system. In addition, the synchronously stored video data can also be used for on-site monitoring of the sensor placement environment, and evidence can be collected for any artificial destruction of the sensor and cheating on the collection environment, including illegal and illegal acts such as closing and blocking the sensor probe. The anti-data tampering environmental monitoring system is easy to implement and has high reliability, and has broad application prospects in the fields of safe production, environmental protection, public health supervision, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of implementation example 1 of the anti-data tampering environmental monitoring system.

[0020] Figure 2 Schematic diagram of implementation example 2 of the anti-data tampering environmental monitoring system.

[0021] Figure 3 Schematic diagram of the structural principle of the light-emitting device.

[0022] Figure 4 Schematic diagram of the workflow of implementation example 1 of the anti-data tampering environmental monitoring system. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the application embodiments. The described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. Figure 1 As shown:

[0024] 1. Environmental monitoring sensors (101), including flammable gas, explosive gas, polluted gas, water quality, hydrology, geological sensors, etc., adopt digital sensors; have wired digital communication interfaces such as RS232, RS485, or point-to-point wireless digital communication interfaces such as Bluetooth, infrared, RF905, etc.; also have wired or wireless network interfaces. The digital communication interface is used to communicate with the light emitting device (102), the network interface is connected to the core switching device switch (104) of the data network, and is used to communicate with the data storage device (106) and the timing device (108). The environmental monitoring sensor includes a sensor with a data display screen.

[0025] 2. The light emitting device (102) is responsible for receiving the environmental data transmitted by the environmental monitoring sensor and converting the environmental data into an optical signal for transmission. The digital communication interface of the light emitting device is connected to the environmental monitoring sensor (101) for receiving the environmental data. The optical signal encoding of the light emitting device can use standard Morse coding to send data by the length of light emission, binary coding or autonomous coding. The structural principle of the light emitting device is Figure 3 Detailed description in the description.

[0026] 3. A camera (103) is responsible for video acquisition. The video acquisition range includes environmental monitoring sensors and light-emitting devices. The acquired video content includes light signals emitted by the light-emitting devices. The camera has a subtitle adding function, which adds subtitles of video acquisition time and location information to the acquired video in real time. The camera has a wired or wireless network interface. The network interface is connected to the core switching device switch (104) of the data network and is used to communicate with the video storage device (105) and the timing device (108). When the light-emitting device (102) uses an infrared light-emitting element to send a light signal, the system uses a camera with an infrared light acquisition function. When the system uses an environmental monitoring sensor with a data display screen, the video content acquired by the camera includes the environmental data text information displayed on the display screen.

[0027] 4. The switch (104) is the core switching device of the data network, responsible for managing the data network and providing communication services for environmental monitoring sensors, cameras, data storage devices, video storage devices and monitoring terminals. A wired switch or a wireless switch, such as a Wifi wireless router, can be used.

[0028] 5. Video storage device (105), responsible for receiving and storing video data sent by the camera through the data network, and providing video data query services for the monitoring terminal, using a video storage server or IP-SAN, FC-SAN and other storage devices with data management functions. The video storage device has TCP / UDP access service and WEB data service functions, providing services for the monitoring terminal (107) to access and retrieve video data.

[0029] 6. Data storage device (106), responsible for receiving and storing environmental data sent by environmental monitoring sensors through the data network, and providing environmental data query services for monitoring terminals, using servers with multiple hard disks or storage devices such as IP-SAN, FC-SAN, etc. with data management functions. The data storage device has TCP / UDP access service and WEB data service functions, providing services for monitoring terminals (107) to access and retrieve environmental monitoring data.

[0030] 7. A monitoring terminal (107) is used to provide data comparison services for management personnel, and has the function of simultaneously retrieving and displaying environmental data stored in a data storage device and video data stored in a video storage device. Computers, workstations, tablet computers, smart phones, etc. with network access functions can be used. Operators can access data storage devices and video storage devices through specific software or browsers on the monitoring terminal to obtain environmental data and video data of the required time. Special recognition software can be used to identify optical signals in video data to obtain parsed data, and the environmental data in the same segment can be compared based on the parsed data. If the data are different, it is determined that the environmental data has been tampered with.

[0031] 8. A timing device (108) has a network interface, is connected to a switch through the network interface, and provides timing services for environmental monitoring sensors, cameras, data storage devices, video storage devices, and monitoring terminals through a data network to ensure the clock synchronization of these devices. The timing device has a built-in satellite positioning module, which receives signals from GPS, Beidou, GLONASS, or Galileo positioning satellites through a satellite antenna (109), and processes them to obtain standard time to ensure the accuracy of the timing time.

[0032] 9. Satellite antenna (109), used to receive positioning satellite signals.

[0033] The low-security data tampering environment monitoring system implementation example 2 is as follows Figure 2 The overall structure of this implementation example is basically the same as that of implementation example 1, with the main differences being:

[0034] 1. A camera (101) with analog video output and a video storage device (105) with analog video input, such as a hard disk recorder, are used. The video output port of the camera is connected to the transmitting end (110) of a video optical terminal, and the receiving end (111) of the video optical terminal is connected to the video input end of the video storage device. The video optical terminals are connected via optical fibers.

[0035] 2. The switch (104) is connected to the Internet.

[0036] 3. The monitoring terminal (107) can remotely connect to the data network of the system through the Internet to access the data storage device and the video storage device.

[0037] 4. Since the data network is connected to the Internet, the environmental monitoring sensors, cameras, data storage devices, video storage devices and monitoring terminals can be timed by the Internet, and there is no need to set up timing devices.

[0038] The data networks in the above two examples are general network structures. In actual applications, due to the long transmission distance, the structure of the data network can be more complex, and data substations, access devices, repeaters, routers and other equipment can be added according to construction requirements.

[0039] The structural principle of the light emitting device is as follows Figure 3 shown.

[0040] 1. The processing unit (301) uses an MCU, a code conversion chip, or a programmable logic device with a code conversion function to convert data into a data signal with a carrier wavelength longer than the camera frame interval, and is mainly responsible for data receiving control of the digital communication interface unit and data sending control of the light-emitting driving unit.

[0041] 2. The digital communication interface unit (302) is responsible for receiving the environmental data sent by the environmental monitoring sensor (101). It can use wired digital communication interfaces such as RS232 and RS485, or point-to-point wireless digital communication interfaces such as Bluetooth, infrared, and RF905. It can directly use various digital communication interface modules to convert the received data signal into an input level signal of the processing unit (301) and transmit it to the processing unit.

[0042] 3. A light-emitting driving unit (303) is controlled by the processing unit (301) to drive the light-emitting unit to emit light, and uses an LED driving module or a transistor driving circuit to convert the control level signal of the processing unit (301) into a control signal of the light-emitting unit (304).

[0043] 4. The light-emitting unit (304), the light-emitting element of the light-emitting device, adopts a visible light LED or an infrared light LED. The visible light LED can adopt LEDs of various colors and be coded through different color combinations.

[0044] 5. A power supply (305), including an AC / DC or DC / DC circuit, converts the power supply into the power required by the processing unit (301), the digital communication interface unit (302), the light driving unit (303) and the light emitting unit (304) for power supply.

[0045] Taking implementation example 1 as an example, the workflow of the anti-data tampering environment monitoring system is as follows: Figure 4 As shown, this figure only lists the main working steps:

[0046] 1. (401), the environmental monitoring sensor (101) collects environmental data, sends a data packet containing the data collection time and the environmental data value to the light emitting device through the digital communication interface, and sends it to the data storage device through the network interface.

[0047] 2. (402), the light-emitting device (102) receives the data packet through the digital communication interface, and sends the data collection time and environmental data value through the light-emitting element in the form of an optical signal. The system should ensure that the environmental monitoring sensor does not send a new data packet to the outside before the optical signal is sent, so as to ensure that within a communication cycle of the light-emitting device, the data sent by the optical signal is synchronized with the environmental data sent by the environmental monitoring sensor.

[0048] 3. (403), the camera (103) continuously collects videos including environmental monitoring sensors and light-emitting devices. The collected video content includes light signals emitted by the light-emitting devices. The camera adds subtitle information of the video collection time and collection location to the collected video, and compresses the video into a data stream and sends it to the video storage device.

[0049] 4. (404), the data storage device (106) receives the data packets from the environmental monitoring sensor and stores them with the receiving time as the index.

[0050] 5. (405), the video storage device (105) receives the video data sent by the camera and stores it with the receiving time as the index.

[0051] 6. (406), the operator accesses the data storage device and the video storage device through the monitoring terminal (107), retrieves the environmental monitoring data and video data within a certain period of time, and verifies whether the environmental monitoring data matches based on the video data.

Claims

1. Anti-data tampering environmental monitoring system, characterized by: The system includes at least one environmental monitoring sensor, at least one light emitting device, at least one camera, at least one data storage device, at least one video storage device, at least one monitoring terminal and a data network; The environmental monitoring sensor, camera, data storage device, video storage device and monitoring terminal are connected to a data network; The environmental monitoring sensor is used to collect environmental data, connect to the light-emitting device through a digital communication interface, connect to a data network through a network interface, and send environmental data to the light-emitting device and the data storage device through the digital communication interface and the data network respectively; The light emitting device receives environmental data transmitted by the environmental monitoring sensor through the digital communication interface, converts the environmental data into an optical signal for transmission, and the environmental monitoring sensor does not transmit new environmental data before the transmission of the optical signal is completed; The camera is responsible for video acquisition, the video acquisition range includes environmental monitoring sensors and light-emitting devices, the acquired video content includes light signals emitted by the light-emitting devices, and the camera communicates with the video storage device through a data network; The data storage device receives and stores environmental data sent by the environmental monitoring sensor, and provides environmental data query services for the monitoring terminal; The video storage device receives and stores the video data sent by the camera, and provides a video data query service for the monitoring terminal; The monitoring terminal has the function of simultaneously retrieving and displaying the environmental data stored in the data storage device and the video data stored in the video storage device, identifying the optical signal in the video data to obtain the analysis data, and comparing the environmental data in the same segment based on the analysis data. If the data are different, it is determined that the environmental data has been tampered with.

2. The data tamper-proof environment monitoring system according to claim 1, characterized in that: The environmental monitoring sensor is a digital sensor having the function of converting environmental parameters into digital data.

3. The data tamper-proof environment monitoring system according to claim 1, characterized in that: The environment monitoring sensor includes an environment monitoring sensor with a data display screen, and the video content collected by the camera includes environmental data text information displayed on the display screen of the environment monitoring sensor.

4. The data tamper-proof environment monitoring system according to claim 1, characterized in that: The light-emitting device includes a light-emitting element, and the light-emitting device sends a light signal by controlling the light-emitting element to turn on and off. The minimum interval time between the light-emitting element turning on and off is higher than the interval time between each frame of the video captured by the camera.

5. The data tamper-proof environment monitoring system according to claim 1, characterized in that: The light-emitting device includes a visible light emitting element or an infrared light emitting element. When the infrared light emitting element is used to send an optical signal, the camera adopts a camera with an infrared light collection function; the visible light emitting element of the system includes light-emitting elements of multiple colors, which are encoded by different color combinations.

6. The data tamper-proof environment monitoring system according to claim 1, characterized in that: The environmental monitoring sensor, camera, data storage device and video storage device all have a clock module and a time recording function; the environmental data transmitted by the environmental monitoring sensor includes the time information of data acquisition; the camera has a subtitle adding function, and the sent video data contains subtitles with video acquisition time and location information; the data storage device and video storage device index and store the received data according to the time provided by the clock module.

7. The data tamper-proof environment monitoring system according to claim 6, characterized in that: The system further comprises a timing device, which is used for uniformly timing the clock modules of the environment monitoring sensor, the camera, the data storage device and the video storage device.

8. The data tamper-proof environment monitoring system according to claim 1, characterized in that: The camera includes a camera that outputs analog signals. When the camera that outputs analog signals is used, the camera and the video storage device are connected to a video optical terminal, and the video signal is transmitted through the video optical terminal and the optical fiber.

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