CN115183822A - Internet of things sensor for monitoring geological settlement and vibration characteristics and control method - Google Patents
Internet of things sensor for monitoring geological settlement and vibration characteristics and control method Download PDFInfo
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- CN115183822A CN115183822A CN202211107274.1A CN202211107274A CN115183822A CN 115183822 A CN115183822 A CN 115183822A CN 202211107274 A CN202211107274 A CN 202211107274A CN 115183822 A CN115183822 A CN 115183822A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
- H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
Abstract
The invention provides an Internet of things sensor for monitoring geological settlement and vibration characteristics and a control method, wherein the Internet of things sensor comprises the following steps: the battery pack comprises a metal shell, a battery, a master control PCB, a plastic cover, a limit button switch and a button switch plug, wherein the bottom of the metal shell is an installation reference plane; a sealed installation cavity is arranged in the metal shell, installation steps are arranged on the periphery of the sealed installation cavity, and the main control PCB is arranged above the battery through the installation steps; the plastic cover is hermetically connected with the opening of the sealed installation cavity; one end of the metal shell is provided with a button switch hole, the limit button switch is arranged in the button switch hole, and the button switch plug is used for limiting and fixing the limit button switch; the invention can realize the uninterrupted monitoring of the sensor of the Internet of things through lower cost and reasonable structure, and provides a favorable foundation for avoiding personal safety hidden danger and economic property loss.
Description
Technical Field
The invention relates to an internet of things sensor, in particular to an internet of things sensor for monitoring geological settlement and vibration characteristics, and further relates to a control method of the internet of things sensor for monitoring the geological settlement and vibration characteristics.
Background
In the industries of engineering, bridges, tunnels, high-rise buildings and the like, the sensor is widely used for realizing geological monitoring, and aims to effectively prevent secondary geological disasters caused by extreme weather and prevent geological settlement and collapse caused by engineering operation. In the current era of intellectualization and promotion of everything interconnection, the use of sensor is also more and more, and based on the consideration of safety factor, it is also more and more strict to the control of surrounding environment when being under construction, but the sensor among the prior art is not to monitoring this special service environment of geological settlement and vibration characteristic, can not realize 24 hours incessant monitoring steadily and reliably, and relevant monitoring and early warning are untimely, will probably cause great personal safety hidden danger and economic property loss.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a stable and reliable sensor of the internet of things for monitoring the geological settlement and vibration characteristics through a simple and efficient structural design, so that uninterrupted monitoring can be realized through a lower cost and a reasonable structure, and a favorable foundation is provided for avoiding personal safety hazards and economic and property losses. On the basis, a control method of the internet of things sensor for monitoring geological settlement and vibration characteristics is further provided.
To this end, the present invention provides an internet of things sensor for monitoring geological settlement and vibration characteristics, comprising: the battery pack comprises a metal shell, a battery, a master control PCB, a plastic cover, a limit button switch and a button switch plug, wherein the bottom of the metal shell is an installation reference plane, and first installation holes are formed in the periphery of the installation reference plane; a sealed installation cavity is arranged in the metal shell, installation steps are arranged around the sealed installation cavity, and the battery is arranged at the bottom of the sealed installation cavity; the main control PCB is arranged above the battery through the mounting step and is arranged in the sealed mounting cavity; the plastic cover is hermetically connected with the opening of the sealed installation cavity; one end of the metal shell is provided with a button switch hole, and the limit button switch is arranged in the button switch hole and connected with the main control PCB; the button switch plug limits and fixes the limit button switch;
a first internal thread is arranged on the inner wall of one end, close to the inner side of the metal shell, of the button switch hole, and a first external thread matched with the first internal thread is arranged on the outer side of the mounting column of the limit button switch; a second internal thread is arranged on the inner wall of one end, close to the outer side of the metal shell, of the button switch hole, and a second external thread matched with the second internal thread is arranged on the outer side of a fixing column of the button switch plug; when the sensor of the internet of things is in a starting state, the second external thread of the button switch plug is connected with the second internal thread of the button switch hole, and the position relation between the button switch plug and the limit button switch is kept in a non-pressing state; after the sensor of the internet of things is in a starting state, the button switch plug further rotates inwards through the second external thread and the second internal thread until the button of the limit button switch is propped against and pressed down, and the position relation between the button switch plug and the limit button switch is kept in a pressing and pressing state.
A further development of the invention is that the internal diameter of the first internal thread is smaller than the internal diameter of the second internal thread; the button of the limit button switch is arranged at one end close to the button switch plug, a button limiting ring is arranged between the button of the limit button switch and the mounting column, and the diameter of the button limiting ring is larger than the inner diameter of the first internal thread.
A further development of the invention is that the radial extent of the second external thread is 2-5mm longer than the radial extent of the second internal thread.
The invention has the further improvement that the outer side of the button switch plug is a polygonal nut, and a polygonal groove is formed in the middle of the polygonal nut; and an LED signal lamp is arranged on one side of the button switch hole.
The invention is further improved in that one side of the main control PCB board close to the limit button switch is provided with a switch avoiding groove, and the width and the depth of the switch avoiding groove respectively correspond to the diameter and the length of the metal shell into which the mounting column of the limit button switch is inserted.
The invention has the further improvement that the inner walls of the mounting steps around the sealed mounting cavity enclose a battery limiting and fixing cavity, the diameter and the length of the battery respectively correspond to the width and the length of the battery limiting and fixing cavity, and the battery is fixedly arranged in the battery limiting and fixing cavity.
The invention has the further improvement that waterproof silica gel is filled in the metal shell; a waterproof step is arranged on the inner side of the upper surface of the metal shell, a waterproof groove is formed in one side, close to the metal shell, of the plastic cover, and the position and the shape of the waterproof groove correspond to those of the waterproof step; the plastic cover is provided with an antenna at the middle position of one side close to the metal shell, and the antenna is arranged on the inner side of the waterproof groove and connected with the main control PCB.
The invention has the further improvement that the antenna is an antenna of an NB-LOT communication module, and the communication is realized only in a normal working mode; the limit button switch is connected with the low-voltage conduction switch module of the main control PCB.
The invention also provides a control method of the internet of things sensor for monitoring the geological settlement and vibration characteristics, which is used for controlling the internet of things sensor for monitoring the geological settlement and vibration characteristics and comprises the following steps:
step S1, after a starting signal of the limit button switch is detected, starting and entering a normal working mode;
s2, monitoring the inclination angle and the acceleration of the sensor of the Internet of things in real time, and closing the NB-LOT communication module and switching to a low power consumption monitoring mode after the change rates of the inclination angle and the acceleration in a preset time period are respectively lower than an inclination angle change rate threshold and an acceleration change rate threshold;
s3, continuously monitoring the inclination angle and the acceleration of the sensor of the Internet of things until the change rate of the inclination angle or the acceleration in a preset time period reaches the inclination angle change rate threshold or the acceleration change rate threshold, starting the NB-LOT communication module, and switching back to a normal working mode;
s4, continuously monitoring the inclination angle and the acceleration of the sensor of the Internet of things, judging whether the change rate of the current inclination angle or the acceleration in a preset time period reaches an inclination angle change rate threshold or an acceleration change rate threshold, and if so, keeping a normal working mode; if not, switching to a low power consumption monitoring mode.
The invention has the further improvement that after the working time of the normal working mode reaches a first preset time, a reminding signal is sent out through the NB-LOT communication module, wherein the reminding signal comprises the ID number, the inclination angle data, the acceleration data, the working time of the normal working mode and the current positioning data of the sensor of the Internet of things; and after the working time of the normal working mode reaches a second preset time, adding battery electric quantity data in the reminding signal.
Compared with the prior art, the invention has the beneficial effects that: through the optimized design of the whole structure, the stable and reliable Internet of things sensor for monitoring the geological settlement and the vibration characteristic can be realized through the simple and efficient structural design, and under the condition that the sensor is not used in storage or transportation and the like, namely before the Internet of things sensor is in a starting state, the stable states of the limit button switch and the button switch plug can be ensured through the special structural design, the sensor cannot be loosened or lost, and meanwhile, the position relation between the button switch plug and the limit button switch can be stably kept in a non-pressing state, namely the start of the Internet of things sensor is not triggered; under the user state, promptly the thing networking sensor is after the starting condition, through the button switch end cap can pass through second external screw thread and second internal thread further internal rotation are until supporting and pressing limit button switch's button, and the button switch end cap with positional relationship between the limit button switch keeps steadily for oppressing the state of pressing, and the button can not break off under the condition of non-external force operation promptly, and then guarantees the continuous work of thing networking sensor steadily to realize incessant monitoring through lower cost and reasonable structure, provide favorable basis for avoiding personal safety hidden danger and economic property loss, be particularly suitable for being used for monitoring this special service environment of thing networking sensor geology that subsides and vibration characteristic.
On the basis, the structure and the control method of the Internet of things sensor are optimized, the foolproof design degree and the humanized design degree of the product are further improved, the stability and the reliability of the product are improved conveniently, and the industrial application requirements of industries such as engineering, bridges, tunnels and high-rise buildings can be better met.
Drawings
FIG. 1 is a schematic illustration of an explosive structure according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of a partial explosion configuration in accordance with an embodiment of the present invention;
FIG. 3 is a schematic circuit diagram of a low-voltage pass switch module according to an embodiment of the invention;
fig. 4 is a schematic workflow diagram of an embodiment of the present invention.
The attached drawings are as follows: 1-a metal housing; 101-mounting a reference plane; 102-a first mounting hole; 103-sealing the installation cavity; 104-mounting steps; 105-a pushbutton switch hole; 106-first internal threads; 107-second internal threads; 108-LED signal lamps; 109-waterproof step; 110-a second mounting hole; 111-a third mounting hole; 112-a limit step; 2-a battery; 3-master control of PCB board; 301-switch avoidance slot; 302-fourth mounting hole; 4-a plastic lid; 401-fifth mounting hole; 5-limit button switch; 501-mounting a column; 502-a first external thread; 503-a button; 504-button retaining ring; 6-a button switch plug; 601-a second external thread; 602-polygonal nut; 603-polygonal grooves; 7-an antenna mounting cavity; 8-low voltage conducting switch module.
Detailed Description
Preferred embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the present embodiment provides an internet of things sensor for monitoring geologic settlement and vibration characteristics, including: the battery pack comprises a metal shell 1, a battery 2, a main control PCB 3, a plastic cover 4, a limit button switch 5 and a button switch plug 6, wherein the bottom of the metal shell 1 is an installation reference plane 101, and first installation holes 102 are formed in the periphery of the installation reference plane 101; a sealed installation cavity 103 is arranged in the metal shell 1, installation steps 104 are arranged around the sealed installation cavity 103, and the battery 2 is arranged at the bottom of the sealed installation cavity 103; the main control PCB 3 is disposed above the battery 2 through the mounting step 104 and is disposed in the sealed mounting cavity 103; the plastic cover 4 is hermetically connected with an opening of the sealed installation cavity 103; one end of the metal shell 1 is provided with a button switch hole 105, and the limit button switch 5 is arranged in the button switch hole 105 and connected with the main control PCB 3; the button switch plug 6 limits and fixes the limit button switch 5;
a first internal thread 106 is arranged on the inner wall of one end of the button switch hole 105 close to the inner side of the metal shell 1, and a first external thread 502 matched with the first internal thread 106 is arranged on the outer side of the mounting column 501 of the limit button switch 5; a second internal thread 107 is arranged on the inner wall of one end of the button switch hole 105 close to the outer side of the metal shell 1, and a second external thread 601 matched with the second internal thread 107 is arranged on the outer side of a fixing column of the button switch plug 6; before the internet of things sensor is in a starting state, the second external thread 601 of the button switch plug 6 is connected with the second internal thread 107 of the button switch hole 105, and the position relation between the button switch plug 6 and the limit button switch 5 is kept in a non-pressing state; after the sensor of the internet of things is in a starting state, the button switch plug 6 is further screwed inwards through the second external threads 601 and the second internal threads 107 until the button of the limit button switch 5 is pressed against and pressed, and the position relation between the button switch plug 6 and the limit button switch 5 is kept in a pressing and pressing state.
The reason why the metal shell 1 is adopted in this embodiment is mainly that reliability and rigidity of metal are utilized, the bottom of the metal shell 1 is an installation reference plane 101, first installation holes 102 are formed around the installation reference plane 101, the installation reference plane 101 must be flat, that is, a plane where the first installation holes 102 are located is located on the same horizontal line, preferably, the installation reference plane is fixed through four first installation holes 102 matched with screws, and an LED signal lamp hole is formed in one side of the button switch hole 105, so that an LED signal lamp 108 is arranged in one side of the button switch hole 105 to achieve a state indicating function. The battery 2 preferably adopts a lithium thionyl chloride battery, is matched with the NB-LOT communication module, has a wide working temperature range from-40 ℃ to +85 ℃, has small self-loss of the battery, is less than 1% per year, has high energy density and long service life, and can make the sensor of the internet of things smaller. The main control PCB board 3 is the main control circuit board of the sensor of the Internet of things. With metal casing 1 is different, the plastics lid 4 no longer adopts the metal material because communication module needs to adopt the antenna, and the metal material can influence the transmission and the receiving efficiency of antenna, consequently, this embodiment adopts plastics lid 4, on the one hand can enough satisfy sealed lid's requirement, and on the other hand also is convenient for set up the antenna, the antenna is preferred to be set up plastics lid 4 is close to the inboard of main control PCB board 3 can, both satisfied reliable and stable installation, and transmission and receiving efficiency are high, with the distance between the main control PCB board 3 is short, and the wiring is simple and convenient. The limit button switch 5 refers to a button switch with a limit fixing function, and except for realizing a switch control function, the maximum difference between the limit button switch and the button switch in the prior art is that a special limit and fixing structure is designed aiming at an application scene of an internet of things sensor for monitoring geological settlement and vibration characteristics, and the special limit and fixing structure needs to be matched with the button switch plug 6 and the button switch hole 105 of the embodiment to well meet the internet of things sensor of the embodiment. The button switch plug 6 is a plug structure designed for the embodiment and used for assisting the limiting and fixing functions of the limiting button switch 5.
According to the embodiment, through the optimized design of the whole structure, the stable and reliable Internet of things sensor for monitoring the geological settlement and vibration characteristics can be realized through a simple and efficient structural design, and under the condition that the sensor is not used in storage or transportation, namely before the Internet of things sensor is in a starting state, the stable states of the limit button switch 5 and the button switch plug 6 can be guaranteed through the special structural design, the sensor cannot be loosened or lost, and meanwhile, the position relation between the button switch plug 6 and the limit button switch 5 can be stably kept in a non-compression state, namely, the button 503 of the limit button switch 5 is not compressed, so that the Internet of things sensor is not triggered to be started; in a use state, namely a state after the sensor of the internet of things is started, the button switch plug 6 can be further inwards rotated through the second external threads 601 and the second internal threads 107 until the button of the limit button switch 5 is abutted and pressed, and the position relationship between the button switch plug 6 and the limit button switch 5 is stably kept in a pressing state, namely the button is not disconnected under the condition of non-external force operation, so that the continuous work of the sensor of the internet of things is stably ensured, uninterrupted monitoring is realized through low cost and a reasonable structure, a favorable foundation is provided for avoiding personal safety hazards and economic property loss, and the sensor of the internet of things is particularly suitable for a special use environment of the sensor of the internet of things for monitoring geological settlement and vibration characteristics.
It should be noted that, as shown in fig. 1 and fig. 2, the inner diameter of the first internal thread 106 is smaller than the inner diameter of the second internal thread 107 in this embodiment; that is to say, the internal threads of the inner wall of the button switch hole 105 are not internal threads with the same diameter, but the internal diameter of the first internal thread 106 close to one end of the inner side of the metal shell 1 is smaller than the internal diameter of the second internal thread 107 close to one end of the outer side of the metal shell 1, so that a limiting step 112 is formed between the first internal thread 106 and the second internal thread 107, and the limiting step 112 is used for limiting the limiting button switch 5 and the button switch plug 6, that is, the limiting button switch 5 or the button switch plug 6 is limited by the limiting step 112 after being screwed in place, thereby effectively preventing the limiting button switch 5 or the button switch plug 6 from being damaged due to too large screwing depth. The embodiment effectively improves the foolproof design degree and the humanized design degree of the product, and reduces the rejection rate and the repair rate of the product in the production and use processes.
It should also be noted that, as shown in fig. 1 and fig. 2, the button 503 of the limit button switch 5 of the present embodiment is disposed at an end close to the button switch plug 6, and is closed when the button switch plug 6 is screwed in and pressed; a button limiting ring 504 is arranged between a button 503 and an installation column 501 of the limiting button switch 5, the button limiting ring 504 is a protruding annular structure used for realizing the limiting function of the button switch plug 6, and the diameter of the button limiting ring 504 is larger than the inner diameter of the first internal thread 106; the diameter of the button retaining ring 504 is larger than the inner diameter of the retaining step 112 and smaller than the inner diameter of the second internal thread 107; the inner diameter of the limit step 112 is identical to the inner diameter of the first internal thread 106. Therefore, the limit button switch 5 can also realize the limit function by the cooperation of the button limit ring 504 and the limit step 112. Different from the limit step 112, the limit step 112 can limit the limit button switch 5 and the button switch plug 6 at the same time; the button limiting ring 504 only limits the button switch plug 6, when the button 503 is pressed in place, the button limiting ring 504 limits further movement of the button switch plug 6, so that the button 503 is prevented from being excessively pressed and damaged, and the foolproof design degree and the humanized design degree of a product can be further improved.
Still further, in this embodiment, the radial length of the second external thread 601 is preferably 2 to 5mm longer than the radial length of the second internal thread 107, that is, the moving distance of the screwing motion of the button switch plug 6 is 2 to 5mm longer than the depth of the second internal thread 107, so as to ensure the pressing effectiveness of the button 503, and prevent the device from being damaged due to pressing transition.
As shown in fig. 2, in this embodiment, the outer side of the button switch plug 6 is a polygonal nut 602, which facilitates preliminary screwing and installation of the button switch plug 6 without a tool, so as to fix the button switch plug 6, and at this time, the button switch plug 6 is suitable for preliminary installation and fixation of the button switch plug 6 without other tools in a storage or transportation stage, that is, without pressing the button 503; the middle of the polygonal nut 602 is provided with a polygonal groove 603, so that in actual use, the button switch plug 6 presses the button 503 to start the internet of things sensor by further screwing with a special tool matched with the polygonal groove 603. This embodiment is right this kind of design of button switch end cap 6 can realize the rapid Assembly of product promptly, also can avoid effectively in storage or transportation stage because the maloperation leads to the drawback that thing networking sensor starts in advance, simple structure and humanized design degree are high.
As shown in fig. 1, this embodiment the master control PCB 3 is close to one side of limit button switch 5 is provided with the switch and keeps away a groove 301, the width and the degree of depth that the groove 301 was kept away to the switch respectively with limit button switch 5's erection column 501 inserts extremely metal casing 1's diameter and length are corresponding, and then can make limit button switch 5 is installing the back that targets in place, can directly with master control PCB 3 is connected, for example through inserting the mount pad or modes such as welding, and then has simplified the production and the assembling process of product, has improved the stability of product, prolongs its life.
In this embodiment, the inner walls of the mounting steps 104 around the sealed mounting cavity 103 enclose a battery limiting fixing cavity, which means a space for fixing and limiting the battery 2 at the bottom of the sealed mounting cavity 103. It should be noted that, as shown in fig. 1, the inner wall of the mounting step 104 is an arc-shaped inner wall, such a design can better fit the battery 2, and the diameter and the length of the battery 2 respectively correspond to the width and the length of the battery limiting and fixing cavity, so as to better fix the battery 2 in the battery limiting and fixing cavity and improve the mounting stability of the product. The mounting step 104 is preferably provided with a third mounting hole 111, the outer edge of the main control PCB 3 is preferably provided with a fourth mounting hole 302, and the main control PCB 3 shuttles through connecting members such as screws through the fourth mounting hole 302 and the third mounting hole 111 and can be stably mounted on the mounting step 104.
More preferably, in this embodiment, waterproof silica gel is filled into the metal casing 1, and the waterproof silica gel is filled to achieve a waterproof effect, and on the other hand, the installation stability of each device, such as the battery 2, can also be increased; as shown in fig. 1 and fig. 2, a waterproof step 109 is provided inside an upper surface of the metal housing 1, and a waterproof groove is provided on a side of the plastic cover 4 close to the metal housing 1, where the position and shape of the waterproof groove correspond to the position and shape of the waterproof step 109; and the outer side of the upper surface of the metal shell 1 is provided with a second mounting hole 110, and the edge of the plastic cover 4 is provided with a fifth mounting hole 401 corresponding to the second mounting hole 110, so that the fixed connection is realized outside the waterproof step 109, the waterproof performance is further ensured, the overall waterproof grade reaches IP67, and the application range is wide. Plastics lid 4 is close to one side intermediate position of metal casing 1 is provided with the antenna, the antenna set up in the inboard of antenna installation cavity 7, antenna installation cavity 7 set up in plastics lid 4 is close to one side of metal casing 1, and sets up the inboard at waterproof recess, consequently, the antenna set up in the inboard of waterproof recess, be convenient for realize fast with the connection of main control PCB board 3, and can waterproof and avoid destroying, guaranteed the transmission and the receiving efficiency of antenna.
Therefore, the embodiment further optimizes the structure and the control method of the sensor of the internet of things, further improves the foolproof design degree and the humanized design degree of the product, is convenient for improving the stability and reliability of the product, and can better meet the industrial application requirements of industries such as engineering, bridges, tunnels and high-rise buildings.
The antenna is an antenna of an NB-LOT communication module, communication is realized only in a normal working mode, electric quantity is saved conveniently, and the service life of a product is prolonged; as shown in fig. 3, the limit button switch 5 is connected to the low voltage conducting switch module 8 of the main control PCB 3. The low-voltage conduction switch module 8 is a switch module realized by adopting an MOS (metal oxide semiconductor) tube circuit, is arranged on the main control PCB (printed circuit board) 3, is electrically connected with the limit button switch 5, provides a hardware basis for realizing a closing, starting, low-power consumption monitoring mode and a normal working mode, and reduces the power consumption as much as possible, wherein the low-power consumption monitoring mode is only about 700uA of quiescent current; the operating current in the normal operating mode is about 30mA and the emission current is about 0.5A. The low-voltage conduction switch module 8 is added with a pull-up and pull-down resistance value, so that unnecessary loss can be further reduced.
As shown in fig. 4, this embodiment further provides a control method of an internet of things sensor for monitoring geological settlement and vibration characteristics, which is used for controlling the internet of things sensor for monitoring geological settlement and vibration characteristics, and includes the following steps:
step S1, after a starting signal of the limit button switch 5 is detected, namely after a button 503 of the limit button switch 5 is pressed in place, starting and entering a normal working mode;
s2, monitoring the inclination angle and the acceleration of the sensor of the Internet of things in real time, and closing the NB-LOT communication module and switching to a low-power consumption monitoring mode after the change rates of the inclination angle and the acceleration in a preset time period are respectively lower than an inclination angle change rate threshold and an acceleration change rate threshold;
s3, continuously monitoring the inclination angle and the acceleration of the sensor of the Internet of things until the change rate of the inclination angle or the acceleration in a preset time period reaches the inclination angle change rate threshold or the acceleration change rate threshold, starting the NB-LOT communication module, and switching back to a normal working mode;
s4, continuously monitoring the inclination angle and the acceleration of the sensor of the Internet of things, judging whether the change rate of the current inclination angle or the acceleration in a preset time period reaches an inclination angle change rate threshold or an acceleration change rate threshold, and if so, keeping a normal working mode; if not, switching to a low power consumption monitoring mode.
It should be noted that, in this embodiment, the NB-LOT communication module is turned off and switched to the low power consumption monitoring mode only when the change rates of the tilt angle and the acceleration within the preset time period are respectively lower than the tilt angle change rate threshold and the acceleration change rate threshold. And as long as the change rate of any one of the inclination angle or the acceleration within a preset time period reaches the inclination angle change rate threshold or the acceleration change rate threshold, the NB-LOT communication module is started and switched back to the normal working mode, thereby ensuring the monitoring accuracy and the timely effectiveness.
The preset time period refers to a preset judgment period, and can be set and adjusted by user according to actual conditions and needs; the inclination angle change rate threshold and the acceleration change rate threshold respectively refer to preset change rate judgment thresholds for judging whether settlement and vibration occur, and can be set and adjusted in a user-defined mode according to actual conditions and needs.
In the embodiment, a mode judgment parameter table is preferentially arranged, default values of corresponding inclination angle change rate threshold values and acceleration change rate threshold values are respectively arranged for bridges, tunnels and high-rise buildings in the mode judgment parameter table, when the default values are lower than the inclination angle change rate threshold values and the acceleration change rate threshold values, the condition that settlement and vibration are abnormal is considered not to occur, an NB-LOT communication module is closed, and a low power consumption monitoring mode is switched to save energy consumption as far as possible; when any one of the inclination angle change rate threshold value and the acceleration change rate threshold value is reached, the NB-LOT communication module is started and switched back to the normal working mode if the condition of sedimentation or abnormal vibration occurs, and the monitoring progress and the timely response degree are improved. In this embodiment, step S4 is used to implement real-time judgment and state adjustment of monitoring, so as to ensure effectiveness of monitoring, and simultaneously, energy consumption can be reduced as much as possible, and service life of the product can be prolonged.
In this embodiment, when the working time of the normal working mode reaches a first preset time, a reminding signal is sent out through the NB-LOT communication module, where the reminding signal includes an ID number of the sensor of the internet of things, inclination angle data, acceleration data, the working time of the normal working mode, and current positioning data; and after the working time of the normal working mode reaches a second preset time, adding the battery electric quantity data in the reminding signal. The first preset time duration is 0.75 times of the working time duration of the battery 2 in the normal working mode obtained through testing, and therefore a reminding signal can be sent out in time when the electric quantity is insufficient; the second is preset long to be referred to and is obtained through the test battery 2 can be 0.85 times of the operating time under the normal operating mode, and then can be when the electric quantity is about to exhaust, send current automatically the operating time of the ID serial number of thing networking sensor, inclination data, acceleration data, normal operating mode, current locating data and battery electric quantity data remind in time to change thing networking sensor avoids influencing the continuation of monitoring. In the embodiment, the first preset time and the second preset time can be set and adjusted in a user-defined mode according to actual conditions and requirements, and then different reminding requirements can be met.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, numerous simple deductions or substitutions may be made without departing from the spirit of the invention, which shall be deemed to belong to the scope of the invention.
Claims (10)
1. An internet of things sensor for monitoring geological settlement and vibration characteristics, comprising: the battery pack comprises a metal shell, a battery, a main control PCB (printed circuit board), a plastic cover, a limit button switch and a button switch plug, wherein the bottom of the metal shell is a mounting reference plane, and first mounting holes are formed in the periphery of the mounting reference plane; a sealed installation cavity is arranged in the metal shell, installation steps are arranged on the periphery of the sealed installation cavity, and the battery is arranged at the bottom of the sealed installation cavity; the main control PCB is arranged above the battery through the mounting step and is arranged in the sealed mounting cavity; the plastic cover is hermetically connected with the opening of the sealed installation cavity; one end of the metal shell is provided with a button switch hole, and the limit button switch is arranged in the button switch hole and connected with the main control PCB; the button switch plug limits and fixes the limit button switch;
the inner wall of one end of the button switch hole close to the inner side of the metal shell is provided with a first internal thread, and the outer side of the mounting column of the limit button switch is provided with a first external thread matched with the first internal thread; a second internal thread is arranged on the inner wall of one end, close to the outer side of the metal shell, of the button switch hole, and a second external thread matched with the second internal thread is arranged on the outer side of a fixing column of the button switch plug; when the sensor of the internet of things is in a starting state, the second external thread of the button switch plug is connected with the second internal thread of the button switch hole, and the position relation between the button switch plug and the limit button switch is kept in a non-pressing state; after the sensor of the internet of things is in a starting state, the button switch plug further rotates inwards through the second external thread and the second internal thread until the button of the limit button switch is propped against and pressed down, and the position relation between the button switch plug and the limit button switch is kept in a pressing and pressing state.
2. The internet of things sensor for monitoring geologic settlement and vibration characteristics of claim 1, wherein the inner diameter of the first internal thread is less than the inner diameter of the second internal thread; the button of the limit button switch is arranged at one end close to the button switch plug, a button limit ring is arranged between the button of the limit button switch and the mounting column, and the diameter of the button limit ring is larger than the inner diameter of the first internal thread.
3. The internet-of-things sensor for monitoring geological settlement and vibration characteristics of claim 1, wherein the radial length of the second external thread is 2-5mm longer than the radial length of the second internal thread.
4. The internet of things sensor for monitoring geological settlement and vibration characteristics as claimed in claim 1, wherein a polygonal nut is arranged outside the button switch plug, and a polygonal groove is formed in the middle of the polygonal nut; and an LED signal lamp is arranged on one side of the button switch hole.
5. The sensor of the internet of things for monitoring geological settlement and vibration characteristics as claimed in any one of claims 1 to 4, wherein a switch avoiding groove is formed in one side of the main control PCB board close to the limit button switch, and the width and depth of the switch avoiding groove respectively correspond to the diameter and length of the metal shell into which the mounting column of the limit button switch is inserted.
6. The sensor of the internet of things for monitoring geological settlement and vibration characteristics as claimed in any one of claims 1 to 4, wherein the inner walls of the mounting steps around the sealed mounting cavity enclose a battery limiting fixing cavity, the diameter and length of the battery correspond to the width and length of the battery limiting fixing cavity respectively, and the battery is fixedly arranged in the battery limiting fixing cavity.
7. The internet of things sensor for monitoring the geological settlement and vibration characteristics according to any one of claims 1 to 4, wherein the metal shell is internally filled with waterproof silica gel; a waterproof step is arranged on the inner side of the upper surface of the metal shell, a waterproof groove is formed in one side, close to the metal shell, of the plastic cover, and the position and the shape of the waterproof groove correspond to those of the waterproof step; the plastic cover is close to the middle position of one side of the metal shell is provided with an antenna, and the antenna is arranged on the inner side of the waterproof groove and connected with the main control PCB.
8. The internet of things sensor for monitoring geological settlement and vibration characteristics as claimed in claim 7, wherein the antenna is an antenna of an NB-LOT communication module, and communication is realized only in a normal operation mode; the limit button switch is connected with the low-voltage conduction switch module of the main control PCB.
9. A control method of an internet of things sensor for monitoring geological settlement and vibration characteristics, which is used for controlling the internet of things sensor for monitoring geological settlement and vibration characteristics according to any one of claims 1 to 8, and comprises the following steps:
step S1, after a starting signal of the limit button switch is detected, starting and entering a normal working mode;
s2, monitoring the inclination angle and the acceleration of the sensor of the Internet of things in real time, and closing the NB-LOT communication module and switching to a low power consumption monitoring mode after the change rates of the inclination angle and the acceleration in a preset time period are respectively lower than an inclination angle change rate threshold and an acceleration change rate threshold;
s3, continuously monitoring the inclination angle and the acceleration of the sensor of the Internet of things until the change rate of the inclination angle or the acceleration in a preset time period reaches the inclination angle change rate threshold or the acceleration change rate threshold, starting the NB-LOT communication module, and switching back to a normal working mode;
s4, continuously monitoring the inclination angle and the acceleration of the sensor of the Internet of things, judging whether the change rate of the current inclination angle or the acceleration in a preset time period reaches an inclination angle change rate threshold or an acceleration change rate threshold, and if so, keeping a normal working mode; if not, switching to a low power consumption monitoring mode.
10. The method for controlling the sensor of the internet of things for monitoring the geological settlement and vibration characteristics as claimed in claim 9, wherein when the working time of the normal working mode reaches a first preset time, a reminding signal is sent out through the NB-LOT communication module, wherein the reminding signal comprises an ID number, inclination angle data, acceleration data, the working time of the normal working mode and current positioning data of the sensor of the internet of things; and after the working time of the normal working mode reaches a second preset time, adding battery electric quantity data in the reminding signal.
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| CN202211107274.1A CN115183822B (en) | 2022-09-13 | 2022-09-13 | Internet of things sensor for monitoring geological settlement and vibration characteristics and control method |
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