CN115842901A - Joint triggering type alarm method and device based on Internet of things technology - Google Patents
Joint triggering type alarm method and device based on Internet of things technology Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D30/00—Reducing energy consumption in communication networks
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Abstract
The invention discloses a joint triggering type alarm method and device based on the technology of the Internet of things. The method comprises the following steps: according to the set working scene, the sensor is triggered, and a trigger signal is sent to the network camera; the network camera receives a trigger signal sent by the sensor, enters a working state, shoots and records audio and stores the audio; the network camera processes the shot pictures according to a preset user scene; and uploading the processed image and audio by the network camera, and distributing the image and audio to a set user group to complete combined triggering type alarm. The invention does not need the user to call for help actively, and avoids the situation that the rescuers cannot know the corresponding information under the condition of user incapability; the alarm information distribution can be carried out through multiple channels such as short messages, platforms, small programs and the like, and the possibility of missed alarms in the field is reduced.
Description
Technical Field
The invention relates to the field of nursing and monitoring and illegal invasion prevention, in particular to a joint trigger type alarm method and device based on the technology of the Internet of things.
Background
Most areas on the earth are about to enter an aging society. Most of the elderly are more or less troubled due to their physical functions declining greatly with age, and need a certain care for the elderly. And because the staff of the nursing mechanism is insufficient or the children are busy, the guardianship of the old people not only has large workload, but also is easy to miss, so that the old people are easier to have accidents or are difficult to be perceived when the accidents happen, and the old people cannot be treated at the first time. Therefore, low-manpower cost and high-efficiency monitoring measures are certainly favored.
(1) According to the invention patent: a home alarm method and equipment (application number CN 201811493291.7) are described, the main applied technical scheme is that a routing device is used for receiving wireless signal information of portable equipment of an entering person to determine identity validity, and if the identity validity is illegal, alarm information is sent to host equipment. This approach requires first of all the deployment of customized routing equipment in order to achieve a wide range of signal coverage detection, which is costly in terms of cost control and not easy for equipment maintenance. Secondly, the intruder can work only by carrying the portable equipment and transmitting the wireless signal between the intruder and the router, and the communication interference is easy to be missed. Meanwhile, hardware information alarm of an intruder can be sent only, so that the information quantity of a user is small, and the universality and the practicability are not strong. (2) According to the invention patent: an indoor positioning method (application number CN 202110309732.9) for nursing care is disclosed, and the main application technical scheme is that after the old people call for help or trigger alarm through a wearable device, the old people are positioned emergently by using a 2.4GHz broadcast hotspot and an alarm communication gateway which are arranged in an area where the people to be positioned move. The user of the processing scheme needs to carry the wearable device, is easy to forget and lose, and has certain psychological pressure on the user in daily life. Secondly, a specific alarm communication gateway is required to be established; the device needs a mobile power supply for power supply; and only coordinate positioning information of the old can be acquired.
Aiming at the two fields of illegal invasion prevention and old age care monitoring, the invention aims to optimize the technical schemes mentioned in the two patents under the condition of controlling the cost output, and balance more information and invisibility of infringement for users, so that the users can obtain better and more convenient safety protection and life quality while receiving feedback information in multiple platforms and channels.
Disclosure of Invention
The invention provides a joint triggering type alarm method and device based on the technology of the Internet of things, aiming at the fact requirements of accidental accidents and crime prevention, and mainly aiming at the fields of nursing care and preventing illegal invasion, and aims to enable a user to obtain alarm information more quickly, prepare in advance, and properly solve the problems of stability and delay of equipment during working, later maintenance cost and the like.
When the sensor transmits signals to trigger work, the camera records and shoots the current area picture, so that a guardian and a security worker can efficiently acquire information, the working transmission between the sensor and the camera needs to achieve low time delay and high accuracy, level signal transmission communication is used, and the aims of alarming and triggering and uploading related information can be achieved subsequently. Meanwhile, the network camera with small volume is selected in consideration of the occupied volume of the working device and the simple degree of installation; considering whether the sensitivity of the sensor can affect the increase of the false alarm rate, the sensor which can adjust the sensitivity by using a slide rheostat is used; considering how to upload data to a multi-channel multi-platform to transmit to user information, a network communication method is used; and considering the possible privacy dispute brought by recording short-time audio by taking a regional photo aiming at the monitoring field, a mosaic image processing algorithm and the like are used.
The invention is realized by at least one of the following technical schemes.
A joint triggering type alarm method based on the technology of the Internet of things comprises the following steps:
s1, according to a set working scene, a set sensor is triggered, and a set trigger signal is sent to a network camera;
s2, the network camera receives a trigger signal sent by the sensor and enters a working state;
s3, shooting and recording audio by the network camera and storing the audio;
s4, the network camera processes the shot pictures according to a preset user scene;
and S5, uploading the processed image and audio by the network camera, distributing the image and audio to a set user group, and finishing combined trigger type alarm.
Further, the signal output when the sensor is not triggered is set to be a high level signal, the signal output after the sensor is triggered is a different low level signal, and the output signal is compared with a reference level line in the network camera to determine whether the output signal is a different high/low level.
Further, when the sensor is not triggered, the output end of the sensor outputs a high-level signal as a standby signal, and the network camera enters a standby state after receiving the high-level signal, namely, data is not written into and uploaded
When the sensor is triggered, the signal output inside the sensor generates a step, so that the output end of the sensor outputs a low-level signal as a trigger signal, and the network camera enters the following working state after receiving the low-level signal:
working state 1: the network camera receives the instantaneous low level signal, namely the output end of the sensor recovers to output a high level signal after finishing outputting the low level signal, the network camera triggers the work, enters a preset working flow, performs the steps S3 to S5, and then resets to enter a standby state;
and (2) working state: and the network camera continuously receives the low-level signal, namely the sensor is always triggered, the output end cannot recover the high-level signal, and the network camera continuously loops the step S3 to the step S5 until the sensor stops being triggered.
Further, in step S4, according to a preset user scene, the network camera determines whether to perform private mosaic processing on the shot picture, if so, a human body recognition algorithm model is deployed in the network camera, and after a human body class of similar objects is detected, the shot picture is taken and intelligently framed, and then the picture is uploaded after secondary image processing of the mosaic algorithm is performed, so as to avoid infringement of privacy.
Further, in step S5, the network camera accesses a 2.4GHz broadcast hotspot in the area to perform WIFI communication, and uploads the audio recorded after triggering and the photographed image to a corresponding cloud server;
and subsequently, corresponding users bound by the network camera number in the database are retrieved and verified, and then multi-channel directional data distribution of the messages is realized for the bound user groups.
A joint trigger type alarm device based on the technology of the Internet of things comprises a network camera and a sensor; the sensor comprises a volume sensor and a vibration sensor, and the network camera comprises a WIFI module;
the network camera loads the GPIO management module to enable the general input/output IO port to be associated with the external PIN foot of the carried system board, so that the basic possibility of internal and external signal transmission of the system, power supply of an external sensor and common-ground operation is realized, and subsequent software program control is realized;
the set general input/output IO port is set to be a receiving mode through API programming of the network camera, so that subsequent level signals can be conveniently transmitted to the network camera through an external corresponding associated PIN PIN and received through the IO port;
through the pre-programming setting of an internal program, the initial mode of the IO port is set to be high level, an external incoming level signal can be detected, and meanwhile, the standby state (without data writing and uploading) of the network camera is related to the high level of the IO port; the working state (shooting and recording uploading) of the network camera is associated with the fact that the IO port receives external incoming low level.
Since the signal value on the signal line is determined by the voltage difference between the signal line and the reference level line, the ground line GND of the network camera is set as the reference level line; a sensor ground wire pin GND is connected to an external GNDPIN pin of the network camera through a low-resistance copper wire, so that common ground and unified reference level lines are realized, and level judgment errors are reduced; the sensor power supply PIN VCC is connected with the external power supply PIN of the network camera to complete the supply of the network camera to the voltage required by the work of the sensor; a digital signal output end (DOUT) of the sensor is connected with any PIN foot which is processed by correlating with a GPIO management module and is arranged outside the network camera;
after the sensor is triggered, the internal signal output generates step, so that a digital signal output end (DOUT) outputs a level signal, the level signal is converted from a high level signal to a low level signal, the level signal is detected and received by the interior of the system through a PIN PIN, and the network camera works.
Further, after the network camera detects that the low level signal is received, the working condition is as follows:
case 1: the method comprises the following steps that an instantaneous low-level signal is received in a network camera system, namely the high-level signal is recovered after the transmission of a sensor signal is finished, the network camera is triggered to work, enters a preset working flow, shoots and records audio frequency for uploading, and then is reset to a standby state;
case 2: and after the workflow of the condition 1 is completed, the input/output IO port can perform signal high-low level comparison again, and the workflow of the condition 1 is performed in a circulating manner until the input/output IO port recovers to receive the high-level signal.
Further, when a plurality of sensors and the network camera work cooperatively, all the sensors need to be grounded with the network camera, connected with different PINs for signal transmission and other PINs corresponding to the received PIN, and pre-programmed and set by an internal program.
Further, when the plurality of sensors and the network camera work cooperatively, each sensor is provided with a slide rheostat, the sensitivity control of each sensor is realized by a slide rheostat knob arranged on a clockwise/anticlockwise adjusting sensor, and the free adjustment is determined according to a working scene.
Further, the level signal is transmitted into the network camera through a copper wire.
Compared with the prior art, the invention has the advantages that:
the level signal transmission is stable in triggering, the delay performance is low, the accuracy is high, different level signals can be used as triggering signals to be timely transmitted to the network camera, a user does not need to actively call for help, and the situation that rescuers cannot know corresponding information under the condition that the user fails is avoided; secondly, the interaction mode with users and guardians is multiple, alarm information distribution can be carried out through multiple channels such as short messages, platforms, small programs and the like, and the possibility of missed alarms in the field is reduced; the transmitted information is diversified, including but not limited to coordinates, images and sound recordings; a mosaic image processing technology is attached, so that privacy disputes caused by the current application scene are avoided; the device is convenient to install and set in structure, small in size, free of carrying by a user, low in power consumption, and free of burden on environment power utilization due to the fact that a plurality of machine positions are installed; the WiFi module is attached to the device, so that communication and information uploading are facilitated, and the possibility of signal interference is reduced.
Drawings
FIG. 1 is a diagram illustrating a connection between a sensor and a network camera according to an embodiment of the present invention;
FIG. 2 is a process diagram of uploading, processing and targeted distribution of data to users in accordance with an embodiment of the present invention;
fig. 3 is a flowchart of a joint triggering type alarm method based on the internet of things technology in the embodiment of the present invention;
fig. 4 is a structural diagram of a joint trigger type alarm device based on the internet of things technology in the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1:
a joint triggering type alarm method based on the technology of the Internet of things is disclosed, and as shown in figure 3, the method comprises the following steps:
s1, according to a set working scene, a set sensor is triggered, and a set trigger signal is sent to a network camera;
s2, the network camera receives a trigger signal sent by the sensor and enters a working state;
s3, shooting and recording audio by the network camera and storing the audio;
s4, the network camera processes the shot pictures according to a preset user scene;
and S5, uploading the processed image and audio by the network camera, and distributing the image and audio to a set user group to complete joint triggering type alarm.
In this embodiment, when the sensor is not triggered, the output end of the sensor outputs a high level signal as a standby signal, and the network camera enters a standby state after receiving the high level signal, that is, data is not written and uploaded
When the sensor is triggered, the signal output inside the sensor generates a step, so that the output end of the sensor outputs a low-level signal as a trigger signal, and the network camera enters the following working state after receiving the low-level signal:
working state 1: the network camera receives the instantaneous low level signal, namely the output end of the sensor recovers to output a high level signal after finishing outputting the low level signal, the network camera triggers the work, enters a preset working flow, performs the steps S3 to S5, and then resets to enter a standby state;
and 2, working state: and the network camera continuously receives the low-level signal, namely the sensor is always triggered, the output end cannot recover the high-level signal, and the network camera continuously loops the step S3 to the step S5 until the sensor stops being triggered.
Example 2:
the present embodiment is different from embodiment 1 in that:
in the step S4, according to a preset user scene, the network camera judges whether the shot pictures need to be subjected to privacy mosaic processing or not, if so, a human body recognition algorithm model is deployed in the network camera, when a similar object such as a human body is detected, the pictures are shot and intelligently framed, and the pictures can be uploaded after secondary image processing of the mosaic algorithm is performed, so that infringement on privacy is avoided.
In step S5, as shown in fig. 2, the network camera accesses a 2.4GHz broadcast hotspot in the area to perform WIFI communication, and uploads the audio recorded after triggering and the photographed image to a corresponding cloud server;
as shown in fig. 3, after checking the user bound by the network camera number in the subsequent retrieval database, multi-channel (wechat applet/public number/management platform, etc.) directed data distribution of messages is realized for the bound user group.
Example 3:
a joint trigger type alarm device based on internet of things technology, as shown in fig. 2, 3 and 4, comprises a network camera and a sensor; in the embodiment, the sensors comprise a volume sensor, a vibration sensor and a magnetic sensor, and the network camera comprises a WIFI module;
the network camera loads the GPIO management module, and simultaneously enables the general input/output IO port to be associated with the external PIN foot of the carried system board, so that the basic possibility of internal and external signal transmission, power supply of an external sensor and common-ground operation of the system is achieved, and subsequent software program control is realized;
the set general input/output IO port is set to be in a receiving mode through an API (application program interface) of the network camera, so that subsequent level signals can be conveniently transmitted to the network camera through an external corresponding associated PIN (personal identification number) PIN and received through the IO port;
the initial mode of the IO port is set to be high level through the pre-programming setting of an internal program, an externally-transmitted level signal can be detected, and meanwhile, the standby state (without data writing and uploading) of the network camera is associated with the high level of the IO port; the working state (shooting and recording uploading) of the network camera is associated with the fact that the IO port receives external incoming low level.
As shown in fig. 1, since the signal value on the signal line is determined by the voltage difference between the signal line and the reference level line, the ground line GND of the network camera is set as the reference level line; a sensor ground wire pin GND is connected to an external GNDPIN pin of the network camera through a low-resistance copper wire, so that common ground and unified reference level lines are realized, and level judgment errors are reduced; the sensor power supply PIN VCC is connected with a 5V power supply PIN PIN outside the network camera to complete the supply of the network camera to the voltage required by the sensor work; a digital signal output end (DOUT) of the sensor is connected with any PIN foot which is processed by correlating with a GPIO management module and is arranged outside the network camera;
after the sensor is triggered, the internal signal output generates step, so that a level signal output by a digital signal output end (DOUT) is converted from high level to low level, the level signal is received by the inside of the system through a PIN PIN, and the network camera works.
Further, after the network camera receives the low level signal, the working condition is as follows:
case 1: the network camera system receives an instantaneous low-level signal, namely, a high-level signal is recovered after the transmission of a sensor signal is finished, the network camera triggers the work, enters a preset work flow, shoots, records and uploads audio, and then resets;
case 2: after the workflow of the condition 1 is completed, the input/output IO port performs signal high-low level comparison again, and the workflow of the condition 1 is performed in a circulating manner until the input/output IO port recovers to receive the high-level signal.
As shown in fig. 4, when a plurality of sensors and the network camera work cooperatively, all the sensors need to be grounded with the network camera, connected with different PINs for signal transmission and other PINs for receiving PINs, and perform internal program pre-programming setting.
When a plurality of sensors and the network camera work cooperatively, the sensitivity control of each sensor is realized by a sliding rheostat knob arranged on a clockwise/anticlockwise adjusting sensor, and the free adjustment is determined according to a working scene.
Further, the level signal is transmitted into the network camera through a copper wire.
In this embodiment, the network camera: v831, the integrated 800MHz dominant frequency mononuclear ARM Cortex-47, the integrated H.264/H.265 video coding supports the multi-stream coding, the decoding performance is 1080P @30fps to the maximum.
A sensor responsible for level signals is transmitted out and then transmitted into the network camera is internally provided with a capacitance electret microphone sensitive to sound. The sound waves vibrate the electret film in the microphone, resulting in a change in capacitance, which generates a minute voltage that changes in response thereto. This voltage is then converted to a voltage of 0-5V, received by the data collector through a/D conversion (analog/digital signal conversion), and then generated and output to a level signal to V831.
Triggered by the sensor, the device uploads data through WIFI after working integrally, then alarm data transmitted to the cloud server are distributed through multiple channels, and a user is informed through communication modes such as short messages, weChat and postboxes, so that the aims of timely rescuing guardians and preventing crimes are fulfilled.
Claims (10)
1. A joint triggering type alarm method based on the technology of the Internet of things is characterized by comprising the following steps:
s1, according to a set working scene, a set sensor is triggered, and a set trigger signal is sent to a network camera;
s2, the network camera receives a trigger signal sent by the sensor and enters a working state;
s3, shooting and recording audio by the network camera and storing the audio;
s4, the network camera processes the shot pictures according to a preset user scene;
and S5, uploading the processed image and audio by the network camera, and distributing the image and audio to a set user group to complete joint triggering type alarm.
2. A joint trigger type alarm method based on internet of things technology as claimed in claim 1, wherein the signal output when the sensor is not triggered is set to be a high level signal, the signal output after the sensor is triggered is a different low level signal, and the output signal is compared with a reference level line in the network camera to determine whether the output signal is a different high/low level.
3. The joint trigger type alarm method based on the internet of things technology as claimed in claim 2, wherein when the sensor is not triggered, the output end of the sensor outputs a high level signal as a standby signal, and the network camera enters a standby state after receiving the high level signal, that is, data is not written and uploaded;
when the sensor is triggered, the signal output inside the sensor generates a step, so that the output end of the sensor outputs a low-level signal as a trigger signal, and the network camera enters the following working state after receiving the low-level signal:
working state 1: the network camera receives the instantaneous low level signal, namely the output end of the sensor recovers to output a high level signal after finishing outputting the low level signal, the network camera triggers the work, enters a preset working flow, performs the steps S3 to S5, and then resets to enter a standby state;
and 2, working state: and the network camera continuously receives the low-level signal, namely the sensor is always triggered, the output end cannot recover the high-level signal, and the network camera continuously loops the step S3 to the step S5 until the sensor stops being triggered.
4. The joint triggering type alarm method based on the internet of things technology as claimed in claim 1, wherein in step S4, according to a preset user scene, the network camera judges whether the photographed pictures need to be subjected to privacy mosaic processing, if so, a human body recognition algorithm model is deployed inside the network camera, and after photographing and intelligent framing is performed when a similar object such as a human body is detected, the pictures can be uploaded after secondary image processing of the mosaic algorithm is performed, so that violation of privacy rights is avoided.
5. The joint trigger type alarm method based on the internet of things technology of claim 1, wherein in the step S5, a network camera is accessed to a 2.4GHz broadcast hotspot in an area to perform WIFI communication, and audio recorded after triggering and a photographed image are uploaded to a corresponding cloud server;
and subsequently, corresponding users bound by the network camera number in the database are retrieved and verified, and then multi-channel directional data distribution of the messages is realized for the bound user groups.
6. A joint trigger type alarm device based on the technology of the Internet of things is characterized by comprising a network camera and a sensor; the sensor comprises a volume sensor and a vibration sensor, and the network camera comprises a WIFI module;
the network camera loads the GPIO management module to enable the general input/output IO port to be associated with the external PIN foot of the carried system board, so that the basic possibility of internal and external signal transmission, power supply of an external sensor and common-ground operation of the system is realized, and subsequent software program control is realized;
the set general input/output IO port is set to be a receiving mode through API programming of the network camera, so that subsequent level signals can be conveniently transmitted to the network camera through an external corresponding associated PIN PIN and received through the IO port;
through the pre-programming setting of an internal program, the initial mode of the IO port is set to be high level, an externally transmitted level signal can be detected, and meanwhile, the standby state of the network camera is associated with the high level of the IO port; the working state of the network camera is associated with the condition that the IO port receives the low level transmitted from the outside;
since the signal value on the signal line is determined by the voltage difference between the signal line and the reference level line, the ground line GND of the network camera is set as the reference level line; a sensor ground wire pin GND is connected to an external GNDPIN pin of the network camera through a low-resistance copper wire, so that common ground and unified reference level lines are realized, and level judgment errors are reduced; the sensor power supply PIN VCC is connected with the external power supply PIN of the network camera to complete the supply of the network camera to the voltage required by the work of the sensor; a digital signal output end (DOUT) of the sensor is connected with any PIN foot which is processed by correlating with a GPIO management module and is arranged outside the network camera;
after the sensor is triggered, the internal signal output generates step, so that a digital signal output end (DOUT) outputs level signals, the level signals are converted into low level signals from high level signals, the low level signals are detected and received by the inside of the system through a PIN PIN, and the network camera works.
7. The joint trigger type alarm device based on the internet of things technology of claim 6, wherein after the network camera detects that a low level signal is received, the working conditions are as follows:
case 1: the network camera system receives an instantaneous low-level signal, namely, a high-level signal is recovered after the transmission of a sensor signal is finished, the network camera is triggered to work, enters a preset working flow, shoots and records audio for uploading, and then is reset to a standby state;
case 2: and after the workflow of the condition 1 is completed, the input/output IO port can perform signal high-low level comparison again, and the workflow of the condition 1 is performed in a circulating manner until the input/output IO port recovers to receive the high-level signal.
8. A joint trigger type alarm device based on the technology of the Internet of things as claimed in claim 6, wherein when a plurality of sensors and the network camera work cooperatively, all the sensors need to be connected with the network camera in common, different PINs for signal transmission are connected with other corresponding receiving PIN PINs, and internal program pre-programming setting is completed.
9. The joint trigger type alarm device based on the internet of things technology as claimed in claim 8, wherein when the plurality of sensors and the network camera work cooperatively, each sensor is provided with a slide rheostat, the sensitivity control of each sensor is realized by a slide rheostat knob arranged on a clockwise/counterclockwise adjusting sensor, and the free adjustment is determined according to a working scene.
10. The joint trigger type alarm device based on the internet of things technology as claimed in claim 6, wherein the level signal is transmitted into the network camera through a copper wire.
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| CN116343445A (en) * | 2023-05-30 | 2023-06-27 | 北京珞安科技有限责任公司 | Internet of things equipment safety protection system and method |
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| CN116343445A (en) * | 2023-05-30 | 2023-06-27 | 北京珞安科技有限责任公司 | Internet of things equipment safety protection system and method |
| CN116343445B (en) * | 2023-05-30 | 2023-08-29 | 北京珞安科技有限责任公司 | Internet of things equipment safety protection system and method |
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