CN115326142A - Environment detection system - Google Patents
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- CN115326142A CN115326142A CN202211131850.6A CN202211131850A CN115326142A CN 115326142 A CN115326142 A CN 115326142A CN 202211131850 A CN202211131850 A CN 202211131850A CN 115326142 A CN115326142 A CN 115326142A
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Abstract
The invention discloses an environment detection system, relating to the technical field of communication; the technical problem of solution is to improve the environment and listen, and the scheme of adoption is, an environment detecting system, power module is connected with collection module, storage module, microprocessor and suggestion module of making a video recording respectively, the output of collection module of making a video recording is connected with storage module's input, storage module's output is connected with microprocessor's input, microprocessor's output and suggestion module's input are connected, the suggestion module includes pronunciation warning component and flash of light component, microprocessor's output is connected with the public input of control module and operation module respectively, control module's output and emergency braking module's input are connected, operation module's output and distance detection module's input are connected. The embodiment of the invention greatly improves the environment detection capability, especially the environment detection in narrow space.
Description
Technical Field
The present invention relates to the field of communications technologies, and more particularly, to an environment detection system.
Background
At present, the human society is faced with many sudden events caused by natural disasters or human factors, such as rescuing trapped people in case of fire, performing on-site rescue in case of earthquake, performing underground rescue in case of mine disaster, performing hostage rescue task and bandit attack. For such special situations, since the specific situation of the site cannot be known, the life safety threat can be caused to the on-site rescue personnel when the personnel enter the dangerous areas with a great amount of unknown factors to carry out on-site rescue.
The existing environment detection device can be applied to emergency scenes, can collect image, audio, video, temperature and other environment information in areas which are not suitable for people to enter, such as narrow spaces, closed environments and the like, and transmits the collected data to an external monitoring center. Because the environment detection device needs to continuously collect and detect, the environment detection device is required to have sufficient electric quantity, and the phenomenon of electric power interruption in the detection process is avoided.
The wireless charging is carried out on the spherical sensor, so that the service time of the electric energy can be effectively prolonged, and sufficient electric quantity is provided for the spherical sensor. The invention introduces a wireless charging method of a spherical sensor, and prolongs the service life of electric energy.
Disclosure of Invention
In order to solve the problems, the invention discloses an environment detection system which can be used for deploying a network server and realizing the analysis and processing of network data.
In order to realize the technical effects, the invention adopts the following technical scheme:
an environment detection system, comprising: the method comprises the following steps:
the power supply module is used for providing working voltage and current of other modules so as to ensure that the other modules are in a normal working state;
the camera shooting acquisition module is used for acquiring the image video and the picture of the environment area and transmitting the acquired environment area video and picture to the storage module;
the storage module is used for storing the pictures and videos output by the camera shooting acquisition module;
the microprocessor is used for analyzing, processing and judging videos and pictures of the environment area input by the memory;
the prompt module comprises a voice warning module and a flashing module, and is used for prompting personnel in the environment area to avoid influencing the normal work of the environment detection device;
the control module receives the analysis, processing and judgment of the microprocessor and sends an electric signal to the emergency braking module according to the information processed by the microprocessor to send emergency braking information;
the operation module receives the analysis, processing and judgment of the microprocessor, and sends an electric signal to the operation module according to the information processed by the microprocessor;
the emergency braking module is used for receiving an instruction sent by the control module when the environment detecting device detects an emergency situation, so that the environment detecting device stops working;
and the distance monitoring module receives the electric signal of the operation module and is used for monitoring the distance between the barrier and the environment detection device.
As a further technical solution of the present invention, the camera capturing module adopts an intelligent camera system video capturing module, the intelligent camera system video capturing module adopts an AD9883a chip to perform digital processing on a camera video and a photo through an a/D converter, and finally adopts an ADV7123 chip to convert a digital signal into an analog signal, and input the converted analog signal into a memory, the intelligent camera system video capturing module is provided with a bidirectional capturing circuit, the bidirectional capturing circuit uses sampling pulses SHP and SHD to sample an SGL and an RSL, and a difference value between the two is obtained through differential operational amplification.
As a further technical scheme of the invention, the DDR4 high-speed memory is adopted by the memory, the DDR4 high-speed memory comprises an FPGA chip, a DDR memory chip and a clock chip, and the DDR4 high-speed memory realizes memory control logic through the FPGA chip; the output electrical signal is input to a microcontroller.
As a further technical scheme of the present invention, the voice warning module is based on 1760, and the 1760 voice warning module includes a microphone preamplifier, an oscillator, an ISD1760 chip and a memory; the ISD1760 chip utilizes the SPI bus to realize the communication of the domain single chip microcomputer, and then the single chip microcomputer transmits a control command to the ISD1760 chip to realize the control of the voice warning module.
As a further technical solution of the present invention, the control module adopts a remote automatic PLC control module, the remote automatic PLC control module receives and executes an instruction of the microprocessor, and the remote automatic PLC control module simultaneously transmits an output signal of an instruction result after execution to the emergency braking module.
As a further technical solution of the present invention, the distance detection module measures the distance using an ultrasonic module, and the working method of the ultrasonic module is as follows:
the ultrasonic waves emitted from the ultrasonic detection distance meet the obstacle and then are reflected back to the receiving port of the ultrasonic module, and the distance from the ultrasonic emitting port to the obstacle is calculated from the time interval from the emitting to the receiving of the ultrasonic waves, as shown in formula 1:
in formula 1, C represents the speed of the ultrasonic wave propagating through the air, d represents the distance from the emitting port of the ultrasonic module to the obstacle, and Δ t represents the time required for the ultrasonic wave to propagate from the emitting port of the ultrasonic module to the obstacle and return.
As a further technical scheme of the invention, the operation module comprises a SIMD adder, a mixed 40-bit adder and a funnel shifter.
As a further technical solution of the present invention, the emergency braking module adopts a control algorithm to implement emergency control, as shown in formula (2):
in the formula (2), d is the distance between the environment detecting device and the self-moving obstacle, and d b Expressed as the braking safety distance of the environment detecting device, d w Expressed as the alarm safety distance of the environment detection device, epsilon represents the danger coefficient of the environment detection device, b represents the ideal friction coefficient of the environment detection device, and w represents the friction coefficient of the environment detection device and the ground, in order to complete emergency braking in the time required by the environment detection device in an emergency and avoid collision, the time threshold of the environment detection device is realized by setting the time threshold of the environment detection device, and the time threshold of the environment detection device is expressed as formula (3):
in equation (3), TTC represents the environment detection device time threshold, d r Expressed as the longitudinal relative distance of the environment detection device from the movable obstacle, r is expressed as the radius of the environment detection device, v r The longitudinal relative speed of the environment detection device and the movable barrier is represented, the time when the alarm occurs is defined as the relative speed TTW of the environment detection device, and the relative speed of the environment detection device is shown in formula (4):
in equation (4), TTW represents the time when the relative velocity of the environment detection device moving the obstacle is 0 at the relative velocity in the braking range at a velocity of-2 m/s after a delay of 1 s.
The invention has the beneficial and positive effects that: the environment detection device is convenient to be applied to various application scenes, particularly, the internal space scenes where workers are not convenient to enter, such as the interior of earthquake ruins and other narrow or hidden spaces, the distance monitoring module and the camera shooting acquisition module can be combined to detect the internal environment of the narrow space conveniently, ultrasonic positioning data obtained by the ultrasonic device can be accurately positioned, image data obtained by the camera shooting acquisition module can be observed the surrounding environment, and therefore environment detection, particularly, environment detection in the narrow space can be well achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive exercise, wherein:
FIG. 1 shows a diagram of an environment detection system;
FIG. 2 shows a diagram of an environment detection method;
FIG. 3 shows an environment detection flow chart.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, it being understood that the embodiments described herein are merely illustrative and explanatory of the invention, and are not restrictive thereof;
an environment detection system, comprising: the method comprises the following steps:
the power supply module is used for providing working voltage and current of other modules so as to ensure that the other modules are in a normal working state; the power module adopts a DC/DC conversion power supply and normally provides electric energy for the camera shooting acquisition module, the storage module, the microprocessor and the prompt module.
The camera shooting acquisition module is used for acquiring the image video and the picture of the environment area and transmitting the acquired environment area video and picture to the storage module;
the storage module is used for storing the pictures and videos output by the camera shooting acquisition module; the storage module adopts a permanent memory, the information and the operation program can be still stored after the permanent memory is powered off, the data speed is high, and the volume is small.
The microprocessor is used for analyzing, processing and judging videos and pictures of the environment area input by the memory; and the microprocessor outputs the electric signals for analyzing, processing and judging the video and the picture to the prompt module.
The prompt module comprises a voice warning module and a flashing module, and is used for prompting personnel in the environment area to avoid influencing the normal work of the environment detection device.
The control module receives the analysis, processing and judgment of the microprocessor and sends an electric signal to the emergency braking module according to the information processed by the microprocessor to send emergency braking information;
the operation module receives the analysis, the processing and the judgment of the microprocessor and sends an electric signal to the operation module according to the information processed by the microprocessor;
the emergency braking module is used for receiving an instruction sent by the control module when the environment detecting device detects an emergency situation, so that the environment detecting device stops working;
and the distance monitoring module receives the electric signal of the operation module and is used for monitoring the distance between the barrier and the environment detection device.
In a specific embodiment, the camera shooting collection module adopts an intelligent camera shooting system video collection module, the intelligent camera shooting system video collection module adopts an AD9883a chip to carry out digital processing on camera videos and photos through an A/D converter, finally adopts an ADV7123 chip to convert digital signals into analog signals, inputs the converted analog signals into a memory, and is provided with a bidirectional collection circuit which samples SGL and RSL by sampling pulses SHP and SHD and obtains a difference value of the SGL and the RSL through differential operational amplification.
In a specific embodiment, the memory adopts a DDR4 high-speed memory, the DDR4 high-speed memory comprises an FPGA chip, a DDR memory chip and a clock chip, and the DDR4 high-speed memory realizes memory control logic through the FPGA chip; the output electrical signal is input to a microcontroller.
In a specific embodiment, the voice warning module is based on 1760, and the 1760 voice warning module comprises a microphone preamplifier, an oscillator, an ISD1760 chip and a memory; the ISD1760 chip utilizes the SPI bus to realize the communication of the domain single chip microcomputer, and then the single chip microcomputer transmits a control command to the ISD1760 chip to realize the control of the voice warning module.
In a specific embodiment, the control module adopts a remote automatic PLC control module, the remote automatic PLC control module receives and executes instructions of a microprocessor, and the remote automatic PLC control module simultaneously transmits output signals of executed instruction results to the emergency braking module; the working process of the remote automatic PLC control module comprises internal processing, communication operation, input processing, program execution and output processing; in the internal processing stage, the remote automatic PLC control module checks whether the microprocessor is normal or not, and resets a monitoring timer; the communication operation is PLC and microprocessing, the display content of the programmer is updated, and when the PLC is in a stop state, only the content processing and the communication operation content are carried out; the input processing is to store the on-off state of all input terminals and read information in a memory; executing a program, namely scanning sentence by sentence according to a step sequence of first left and then right, and first up and down according to a PLC ladder diagram program scanning principle, and executing the program; after the program is executed, the output processing drives the power amplifying circuit through the isolating circuit, outputs a control signal to the outside from the output terminal and drives the emergency control module; the operation mode is that the PLC needs to perform process cycle work of internal processing, communication service, input processing, program processing and output processing.
In a specific embodiment, the distance detection module measures the distance by using an ultrasonic module, and the working method of the ultrasonic module is as follows:
the ultrasonic waves emitted from the ultrasonic detection distance meet the obstacle and then are reflected back to the receiving port of the ultrasonic module, and the distance from the ultrasonic emitting port to the obstacle is calculated from the time interval from the emitting to the receiving of the ultrasonic waves, as shown in formula 1:
in formula 1, C represents the speed of the ultrasonic wave propagating through the air, d represents the distance from the emitting port of the ultrasonic module to the obstacle, and Δ t represents the time required for the ultrasonic wave to propagate from the emitting port of the ultrasonic module to the obstacle and return.
In a particular embodiment, the operation module includes a SIMD adder, a mix 40-bit adder, and a funnel shifter.
In a specific embodiment, the emergency braking module implements emergency control by using a control algorithm, as shown in formula (2):
in the formula (2), d is the distance between the environment detecting device and the self-moving obstacle, and d b Expressed as the braking safety distance of the environment detecting device, d w Expressed as the alarm safety distance of the environment detection device, epsilon represents the danger coefficient of the environment detection device, b represents the ideal friction coefficient of the environment detection device, and w represents the friction coefficient of the environment detection device and the ground, in order to complete emergency braking in the time required by the environment detection device in an emergency and avoid collision, the time threshold of the environment detection device is realized by setting the time threshold of the environment detection device, and the time threshold of the environment detection device is expressed as the formula (3): wherein when epsilon>1 at time d>dw, indicating the environment detection device is in a safe state, when 1 > epsilon > 0, then dw>d>db, indicating that the environment detecting device and the moving obstacle are likely to collide, and the early warning function is required to be started, when 0 > epsilon, d is b >d, the environment detecting device must be braked to avoid collision.
In equation (3), TTC represents the environment detection device time threshold, d r Expressed as the longitudinal relative distance of the environment detection device from the movable obstacle, r is expressed as the radius of the environment detection device, v r The longitudinal relative speed of the environment detection device and the movable barrier is represented, and the time when the alarm occurs is defined as the relative speed TTW of the environment detection device, and the relative speed of the environment detection device is shown in formula (4):
in equation (4), TTW represents the time when the relative velocity of the environment detection device moving the obstacle is 0 at the relative velocity in the braking range at a velocity of-2 m/s after a delay of 1 s. The alarm condition of the environment detection device is as follows: and when the TTC is larger than the TTW, the alarm is not given, and when the TTC is smaller than the TTW, the alarm is given.
Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that these specific embodiments are merely illustrative and that various omissions, substitutions and changes in the form and details of the methods and systems described above may be made by those skilled in the art without departing from the spirit and scope of the invention; for example, it is within the scope of the present invention to combine the steps of the methods described above to perform substantially the same function in substantially the same way to achieve substantially the same result; accordingly, the scope of the invention is to be limited only by the following claims.
Claims (8)
1. An environment detection system, comprising: the method comprises the following steps:
the power supply module is used for providing working voltage and current of other modules so as to ensure that the other modules are in a normal working state;
the camera shooting acquisition module is used for acquiring the image video and the picture of the environment area and transmitting the acquired environment area video and picture to the storage module;
the storage module is used for storing the pictures and videos output by the camera shooting acquisition module;
the microprocessor is used for analyzing, processing and judging videos and pictures of the environment area input by the memory;
the prompt module comprises a voice warning module and a flashing module, and is used for prompting personnel in the environment area to avoid influencing the normal work of the environment detection device;
the control module receives the analysis, processing and judgment of the microprocessor and sends an electric signal to the emergency braking module according to the information processed by the microprocessor to send emergency braking information;
the operation module receives the analysis, the processing and the judgment of the microprocessor and sends an electric signal to the operation module according to the information processed by the microprocessor;
the emergency braking module is used for receiving an instruction sent by the control module when the environment detecting device detects an emergency situation, so that the environment detecting device stops working;
and the distance monitoring module receives the electric signal of the operation module and is used for monitoring the distance between the barrier and the environment detection device.
2. The environment detection system of claim 1, wherein: the utility model discloses a camera shooting system, including camera shooting collection module, intelligence camera shooting system video collection module, AD9883a chip, with camera video and photo through AD converter digital processing, adopt ADV7123 chip to turn into analog signal with digital signal at last, the analog signal who will change out inputs the memory to, intelligence camera shooting system video collection module is provided with two-way acquisition circuit, two-way acquisition circuit application sampling pulse SHP and SHD come to sample SGL and RSL, obtain difference between them through difference operational amplifier.
3. The environment detection system of claim 1, wherein: the DDR4 high-speed memory is a DDR4 high-speed memory and comprises an FPGA chip, a DDR memory chip and a clock chip, and the DDR4 high-speed memory realizes memory control logic through the FPGA chip; the output electrical signal is input to a microcontroller.
4. The environment detection system of claim 1, wherein: the voice warning module is based on 1760 and comprises a microphone preamplifier, an oscillator, an ISD1760 chip and a memory; the ISD1760 chip utilizes the SPI bus to realize the communication of the domain single chip microcomputer, and then the single chip microcomputer transmits a control command to the ISD1760 chip to realize the control of the voice warning module.
5. The environment detection system of claim 1, wherein: the control module adopts a remote automatic PLC control module, the remote automatic PLC control module receives and executes the instruction of the microprocessor, and the remote automatic PLC control module simultaneously transmits the output signal of the executed instruction result to the emergency braking module.
6. The environment detection system of claim 1, wherein: the distance detection module adopts an ultrasonic module to measure the distance, and the working method of the ultrasonic module is as follows:
the ultrasonic waves emitted from the ultrasonic detection distance meet the obstacle and then are reflected back to the receiving port of the ultrasonic module, and the distance from the ultrasonic emitting port to the obstacle is calculated from the time interval from the emitting to the receiving of the ultrasonic waves, as shown in formula 1:
in formula 1, C represents the speed of the ultrasonic wave propagating through the air, d represents the distance from the emitting port of the ultrasonic module to the obstacle, and Δ t represents the time required for the ultrasonic wave to propagate from the emitting port of the ultrasonic module to the obstacle and return.
7. The environment detection system of claim 1, wherein: the operation module comprises a SIMD adder, a mixed 40-bit adder and a funnel shifter.
8. The environment detection system of claim 1, wherein: the emergency braking module adopts a control algorithm to realize emergency control, as shown in a formula (2):
in the formula (2), d is the distance between the environment detecting device and the self-moving obstacle, d b Expressed as the braking safety distance of the environment detecting device, d w Expressed as the alarm safety distance of the environment detection device, epsilon represents the danger coefficient of the environment detection device, b represents the ideal friction coefficient of the environment detection device, and w represents the friction coefficient of the environment detection device and the ground, in order to complete emergency braking in the time required by the environment detection device in an emergency and avoid collision, the time threshold of the environment detection device is realized by setting the time threshold of the environment detection device, and the time threshold of the environment detection device is expressed as formula (3):
in equation (3), TTC represents the environment detection device time threshold, d r Expressed as the longitudinal relative distance, v, of the environment detection means from the movable obstacle r Representing an environmentThe longitudinal relative velocity of the detecting device and the movable obstacle, r, is expressed as the radius of the environment detecting device, and the time when the alarm occurs is defined as the relative velocity TTW of the environment detecting device, and the relative velocity of the environment detecting device is shown in formula (4):
in equation (4), TTW represents the time when the relative velocity of the environment detection device moving the obstacle is 0 at the relative velocity in the braking range at a velocity of-2 m/s after a delay of 1 s.
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