Leveling point position low-power-consumption monitoring system based on multiple triggering modes

Abstract

The utility model relates to the technical field of leveling point monitoring, and discloses a leveling point low-power-consumption monitoring system based on multiple trigger modes, which comprises a micro-control unit, a multi-sensing trigger unit, a loudspeaker, a camera, a communication module and a Beidou positioning module, the output end of the multi-sensing trigger unit is connected with the input pin of the micro-control unit, and the output end of the multi-sensing trigger unit is connected with the input pin of the micro-control unit. The multi-sensing trigger unit can output different trigger signals according to trigger types near the benchmark, and when no trigger signal exists, the micro-control unit is in a non-starting low-power-consumption operation state; the output end of the Beidou positioning module is connected with the input end of the micro-control unit, and the Beidou positioning module is used for collecting location positioning information; the output end of the micro-control unit is connected with the input ends of the loudspeaker, the camera and the communication module. According to the utility model, active early warning protection can be carried out on a level point, external intruding is avoided, on-site images and videos can be collected as evidences, and the system is low in power consumption and long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of level point monitoring, in particular to a low-power consumption monitoring system for level points based on multiple triggering methods. Background Art

[0002] In the prior art, leveling measurement technology can be used to monitor ground settlement. Level points are mainly divided into two categories: permanent and temporary. National level points are generally made into permanent points, usually made of concrete, buried deep below the frost line, and a corrosion-resistant hemispherical metal mark is buried at the top of the monument. Due to the particularity of the leveling measurement mark, it is mostly distributed in the wild and unattended areas. The phenomenon of damage and loss of level points is serious every year. The average installation price of each level point is several thousand yuan, and the loss will cause greater economic losses. Moreover, the lack of long-term monitoring data will also cause irreparable losses to ground settlement monitoring and scientific research work.

[0003] Chapter VII of the Surveying and Mapping Law of the People's Republic of China stipulates that surveying markers shall be protected by law. However, in the actual law enforcement process, due to the particularity of the monitoring points, it is often impossible to detect and stop damage and destruction in time, which brings difficulties to the later law enforcement work.

[0004] There are also some protective devices for level points in the prior art. For example, in the Chinese utility models with the application number 201820524687.2, titled "Level Point Protection Disk", the application number 202020795760.7, titled "A High-Precision Level Point Protection Structure", and the application number 202022138821.5, titled "A Level Point Protection Device for Ring Road around Reservoir with Shock Absorption Structure", passive protection is carried out by using protective structures / protection disks, which cannot actively send early warning information and cannot collect evidence such as images and videos, resulting in insufficient monitoring ability for level points.

[0005] There are also many remote monitoring systems / devices in the prior art for monitoring objects arranged at a distance, including those in the wild. For example, in the authorized patents with the application number 201620130435.2, titled "A Field Video Remote Monitoring System", the application number 202122355056.7, titled "A Remote Wireless Monitoring System for Fire Fighting Facilities", and the application number 201810283007.7, titled "Field Fire Remote Monitoring System and Its Monitoring Method", signals such as sensors and videos in the distance are collected by using wired or wireless communication technologies. However, their application scenarios and requirements are quite different from those of level point monitoring, making them unable to meet the special needs of level point monitoring. Moreover, there is a generally difficult problem of power consumption and service life in the existing remote monitoring systems / devices, making the later maintenance of the system / equipment rather cumbersome. Usually, the battery needs to be replaced every 2 - 3 years at most, or every few months at least, and the maintenance cost is relatively high. Summary of the Utility Model

[0006] In order to overcome the deficiencies of the prior art, the purpose of the present utility model is to provide a low-power monitoring system for leveling points based on multiple triggering methods, which can actively warn and protect the leveling points, avoid external intrusion by mistake, and can collect on-site images and videos as evidence. The system uses a method of combining multiple sensors for triggering, with low power consumption and long service life, and can reduce the operation and maintenance costs after installation.

[0007] The present utility model is implemented by the following technical solutions: A low-power monitoring system for leveling points based on multiple triggering methods includes a micro-control unit, a multi-sensor triggering unit, a speaker, a camera, a communication module, and a Beidou positioning module. The output end of the multi-sensor triggering unit is connected to the input pin of the micro-control unit. The multi-sensor triggering unit is used to collect sensing signals. The multi-sensor triggering unit can output different triggering signals according to the triggering types near the leveling point. When there is no triggering signal, the micro-control unit is in a low-power operating state without starting up; the output end of the Beidou positioning module is connected to the input end of the micro-control unit. The Beidou positioning module is used to collect the position positioning information; the output end of the micro-control unit is respectively connected to the input ends of the speaker, the camera, and the communication module. Among them, voice reminder information is sent through the speaker, image and video information at the leveling point is collected through the camera, and data transmission and communication are carried out with the remote control center through the communication module.

[0008] Further, the multi-sensor triggering unit includes an attitude sensor and a clock module. The attitude sensor is used to collect the tilt and vibration signals of the monitoring system, and the clock module is used to set the timer; when there is no external tilt and vibration trigger and the timing start time has not been reached, the micro-control unit is in a low-power operating state without starting up. When the clock module reaches the timing start time or the attitude sensor senses an external tilt and vibration trigger, the micro-control unit starts to work.

[0009] Further, the multi-sensor triggering unit further includes an infrared sensor. The infrared sensor is used to detect living bodies. When a living body is detected, the infrared sensor triggers the micro-control unit to control the speaker and the camera to work respectively.

[0010] Further, the multi-sensor triggering unit further includes a photosensitive sensor. The photosensitive sensor is used to collect triggering signals at close range. When there is a misplacement or disassembly of the leveling point by personnel, the photosensitive sensor triggers the micro-control unit to control the speaker and the camera to work respectively.

[0011] Further, the multi-sensor triggering unit further includes a touch sensor. The touch sensor is used to collect touch signals to realize the touch switch function, and is used for restarting, arming, and disarming settings of the device.

[0012] Further, the multi-sensor trigger unit further includes a vibration sensor, which is a mechanical vibration switch sensor for collecting vibration signals. When an external vibration is detected, the vibration sensor triggers the micro-control unit to control the speaker and the camera to work respectively.

[0013] Further, the micro-control unit is also connected with a USB debugging interface for program burning, debugging, and USB power supply.

[0014] Further, the low-power monitoring system for leveling points further includes a power supply module for supplying power to the monitoring system. A main switch is provided on the power supply module for controlling the on-off power of the system.

[0015] Further, the micro-control unit is a low-power embedded microprocessor.

[0016] Further, the communication module is an NB-IoT wireless communication module, a 4G wireless communication module, or a LoRa wireless communication module.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. For the low-power monitoring system for leveling points based on multiple trigger methods of the present utility model, when there is no trigger signal, the micro-control unit is in a low-power operating state without starting up; the multi-sensor trigger unit can output different trigger signals according to the trigger types near the leveling point, wake up the micro-control unit, actively send voice reminder information, and can collect image and video information at the leveling point, thereby meeting the low-power operation requirements of the system, enabling the system to work longer without replacing the battery or charging, being more suitable for the monitoring requirements of leveling points arranged in the wild, and reducing the operation and maintenance costs after arrangement.

[0019] 2. The low-power monitoring system for leveling points based on multiple trigger methods of the present utility model, in cooperation with the power supply circuit and the trigger circuit, can be triggered by one or more signals such as touch, removal, clock, vibration, tilt, and personnel approach. The micro-control unit can distinguish what kind of trigger it is, so that the micro-control unit outputs different control signals, thereby realizing the low-power operation of the system while meeting the usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the system composition block diagram of the present utility model;

[0021] Figure 2 is the power supply circuit diagram of the micro-control unit in the present utility model;

[0022] Figure 3 is the trigger circuit of the multi-sensor trigger unit in the present utility model.

[0023] In the figure: USB debugging interface 10, micro control unit 11, attitude sensor 12, infrared sensor 13, photosensitive sensor 14, touch sensor 15, vibration sensor 16, clock module 17, speaker 19, camera 18, communication module 110, Beidou positioning module 111. Specific implementation mode

[0024] The following uses specific specific examples to illustrate the implementation mode of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0025] The purpose of the present invention is to provide a low-power monitoring system for leveling points based on multiple triggering methods in view of the defects of the prior art.

[0026] Embodiment 1

[0027] This embodiment provides a low-power monitoring system for leveling points based on multiple triggering methods. Refer to Figure 1As shown in the figure, it includes a micro control unit 11, a speaker 19, a camera 18, a communication module 110 and a Beidou positioning module 111. The output end of the Beidou positioning module 111 is connected to the input end of the micro control unit 11. The Beidou positioning module 111 is used to collect the position information of the benchmark point. The Beidou positioning module 111 in this embodiment implements a mature positioning module in the prior art, and its positioning accuracy is not lower than ±100m. The output end of the micro control unit 11 is respectively connected to the input ends of the speaker 19, the camera 18 and the communication module 110. The micro control unit 11 uses a low-power embedded microprocessor. The micro control unit 11 in this embodiment uses an ultra-low-power embedded microprocessor of the SAMA5D2 series. It is a high-performance microprocessor based on the Arm Cortex-A5 CPU, with an ultra-low-power mode with a fast wake-up function. The operating temperature range is -40°C to +105°C, which can meet the field use in most areas. The micro control unit 11 sends out voice reminder information through the speaker 19, and collects image and video information at the benchmark point through the camera 18. The speaker 19 in this embodiment uses a voice horn in the prior art and can send out voice warning information to warn the intruder to leave. The camera 18 uses a serial camera in the prior art and is used to collect image and video information at the benchmark point. The communication module 110 is an NB-IoT wireless communication module, a 4G wireless communication module or a LoRa wireless communication module, and preferably uses a mature 4G wireless communication module in the prior art for data transmission and communication with the remote control center. The above monitoring technology is a wireless monitoring system that is maturely used in the prior art, and its specific circuit and working principle will not be elaborated in this utility model.

[0028] The low-power monitoring system for the benchmark point in this embodiment further includes a multi-sensor trigger unit. The output end of the multi-sensor trigger unit is connected to the input pin of the micro control unit 11. The multi-sensor trigger unit is used to collect sensor signals. When there is no trigger signal, the micro control unit 11 is in a low-power operating state without starting up. The multi-sensor trigger unit can output different trigger signals according to the trigger type near the benchmark point, so as to meet the low-power operation requirements of the system, enabling the system to work longer without replacing the battery or charging, and being more suitable for the monitoring requirements of the benchmark point arranged in the wild.

[0029] Specifically, the multi-sensor trigger unit in this embodiment includes an attitude sensor 12 and a clock module 17. The attitude sensor 12 can use the SC7A20 high-precision digital three-axis micro digital accelerometer of Silan Microelectronics. It has low power consumption, a voltage range of 1.71V to 3.6V, a small volume, accurate measurement, can achieve dynamic detection within the range of ±4G, and can perform sleep and wake-up detection; the clock module 17 can use the PCF8563B real-time low-power clock module, which has a programmable clock output, an interrupt output, and a power-down detector, with a working current of 0.25 μA and a working voltage range of 1V to 5.5V. The attitude sensor 12 is used to collect the tilt and vibration signals of the monitoring system at the benchmark point, and the clock module 17 is used to set the timer; when there is no external tilt or vibration trigger and the timing start time has not been reached, the microcontroller unit 11 is in a low-power operating state without powering on. When the clock module 17 reaches the timing start time or the attitude sensor 12 senses an external tilt or vibration trigger, the microcontroller unit 11 powers on and works, activates the speaker 19 to send a voice reminder message, the camera 18 to collect the image and video information at the benchmark point, and performs data transmission and communication with the remote control center through the communication module 110, so as to warn the intruder to leave and collect the image and video information on the site to understand the site situation and obtain evidence, thereby ensuring the safety of the benchmark point.

[0030] Refer to Figure 2 As shown, the alarm signal ALARM is connected to the triode Q6 after passing through the resistor R44. A resistor R2 is connected between the base and the emitter of the triode Q6, and the collector of the triode Q6 is connected to the output terminal of the common-anode diode D6. PWRCTR is connected to a GPIO output pin of the microcontroller unit 11 and outputs a low level to power off the microcontroller unit 11. VM is connected to the power supply pin of the microcontroller unit 11 to supply power to the microcontroller unit 11. The field-effect transistor Q5 (PMOS transistor) is used as a switch. One end of the field-effect transistor Q5 is connected to the input 1 terminal of the common-anode diode D6. When ALARM is at a low level, VM outputs a low level and the microcontroller unit 11 does not work. When an alarm due to vibration or tilt occurs or the timer times out, ALARM becomes high level, Q5 conducts, and VM supplies power to the microcontroller unit 11 with the VBAT voltage. The power-on of the microcontroller unit 11 is controlled by the attitude sensor 12 and the clock, and the power-off of the microcontroller unit 11 is controlled by itself, thus realizing the low-power operation of the system.

[0031] Refer to Figure 3As shown, the ALARM_T terminal is connected to the interrupt output pin of the clock module 17 and is used to realize the timed startup of the MCU power supply; the ALARM_J1 terminal is connected to the interrupt output 1 of the attitude sensor 12 and is used to realize vibration alarm, and the ALARM_J2 terminal is connected to the interrupt output 2 of the attitude sensor 12 and is used to realize tilt alarm. The clock module 17 and the attitude sensor 12 use common anode diodes D7, D8, and D9 to realize the output of the alarm signal ALARM. At the same time, the clock, vibration, and tilt signals are respectively output to the corresponding pins of the microcontrol unit 11 through GPIO10, GPIO11, and GPIO19. When a tilt and / or vibration signal is generated, ALARM becomes high level to power on the microcontrol unit 11. Since the three alarm signals are independently output to the microcontrol unit 11, it is also possible to distinguish which signal triggers and what kind of alarm it is.

[0032] Embodiment 2

[0033] This embodiment provides a low-power monitoring system for leveling points based on multiple triggering methods. On the basis of the system in Embodiment 1, with reference to Figure 1 As shown, the multi-sensor triggering unit further includes an infrared sensor 13, a photosensitive sensor 14, and a vibration sensor 16. The infrared sensor 13 in this embodiment can use an MG5850B type fixed-frequency microwave radar induction module, which has a small volume, low power consumption, a working current of 40uA, and a voltage working range of 2.8V - 5.5V. It is used to detect the movement of human bodies or moving targets, and the sensing distance is adjustable, capable of detecting moving living bodies. The photosensitive sensor 14 uses a photosensitive sensor in the prior art and is used to sense short-distance triggering signals such as accidental movement or disassembly of the leveling point by personnel. The vibration sensor 16 in this embodiment can use an SW-18010P type mechanical vibration switch sensor, whose working current is less than 20mA, and it will output a signal when it is subjected to an external force collision reaching an appropriate vibration force, and is used to collect vibration signals.

[0034] In the operation of the low-power monitoring system for leveling points based on multiple triggering methods, a multi-sensor fusion and sequential triggering method is adopted. First, relying on the attitude sensor 12, two triggering methods are set for the attitude sensor 12, one is a slight vibration trigger, and the other is a strong vibration or tilt trigger. After a slight vibration trigger, the subsequent infrared sensor 13, photosensitive sensor 14, and vibration sensor 16 are started to determine whether there is human damage. If human factors are detected, the microcontrol unit 11 is further started for further judgment to control the speaker 19 and the camera 18 to generate alarms and collect images and videos. For strong vibration or tilt, which generally mainly refers to major changes in the external environment, such as landslides, mudslides, and violent damage to mechanical equipment, etc., the circuit of the microcontrol unit 11 is immediately turned on, and alarms are immediately given and information is collected, so as to maintain the low-power operation of the system while meeting the monitoring requirements.

[0035] Referring to Figure 3 As shown, the ALARM_IR- terminal is connected to the interrupt output pin of the infrared sensor 13, mainly used to achieve human body sensing. The ALARM_C- terminal is connected to the photosensitive sensor 14 to achieve anti-tampering and anti-movement sensing. The VZD- terminal is connected to the vibration sensor 16, used to achieve vibration alarm. By cooperating with the attitude sensor 12, the vibration sensor 16 can collect vibration signals more accurately. The photosensitive sensor 14, infrared sensor 13, and vibration sensor 16 use common anode diodes D4, D10, and D11 to output the alarm signal ALARM. At the same time, they are respectively output to the corresponding pins of the microcontroller unit 11 through GPIO12, GPIO4, and GPIO18. When a trigger signal is generated, ALARM becomes high level to power on the microcontroller unit 11. Since they are all triggered separately, it is possible to distinguish which signal generates the trigger and also distinguish what kind of alarm it is, thus making signal collection and classification more accurate.

[0036] Embodiment 3

[0037] This embodiment provides a low-power monitoring system for leveling points based on multiple trigger methods. Referring to Figure 1 As shown, the multi-sensor trigger unit further includes a touch sensor 15. The touch sensor 15 in this embodiment can use a TTP223 type single-key capacitive touch button detection sensor. It uses charge detection technology to determine whether a finger approaches or touches the sensing surface by generating a charge level between the operator's finger and the touch button pad, used to collect touch signals to achieve the touch switch function, and used for restarting, arming, and disarming settings of the device. Referring to Figure 3 As shown, the ALARM_H- terminal is connected to the touch sensor 15 to achieve the touch switch restart function.

[0038] The low-power monitoring system for leveling points based on multiple trigger methods further includes a power module and a USB debugging interface 10. The USB debugging interface 10 is connected to the microcontroller unit 11 and is used for program burning, debugging, and USB power supply. The power module is used to supply power to the monitoring system. The power module can be a lithium thionyl chloride battery, which is a battery with a very high specific energy in the actual application battery series. The specific energy can reach 590 W·h / kg, and it has the characteristics of large capacity, low discharge rate, and long life. It can reach a 10-year life in the standby state. A main switch is provided on the power module to control the on / off of the system.

[0039] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A low-power monitoring system for level points based on multiple triggering modes, characterized by: It includes a micro control unit (11), a multi-sensor trigger unit, a speaker (19), a camera (18), a communication module (110) and a Beidou positioning module (111), The output end of the multi-sensor trigger unit is connected to the input pin of the micro control unit (11); the multi-sensor trigger unit is used to collect sensor signals; the multi-sensor trigger unit can output different trigger signals according to the trigger type near the level point; when there is no trigger signal, the micro control unit (11) is in a low power consumption operation state without being turned on; The output end of the Beidou positioning module (111) is connected to the input end of the micro control unit (11), and the Beidou positioning module (111) is used to collect the location positioning information; The output end of the micro control unit (11) is connected to the input end of the speaker (19), the camera (18), and the communication module (110), respectively, wherein the speaker (19) issues a voice reminder message, the camera (18) collects image and video information at the leveling point, and the communication module (110) performs data transmission and communication with the remote control center.

2. According to claim 1, a level point low power consumption monitoring system based on multiple triggering modes is characterized in that: The multi-sensor trigger unit comprises a posture sensor (12) and a clock module (17), wherein the posture sensor (12) is used to collect tilt and vibration signals of the monitoring system, and the clock module (17) is used to set the timing machine; when there is no external tilt or vibration trigger and the timing start time has not been reached, the micro control unit (11) is in a low-power operation state without being turned on; when the clock module (17) reaches the timing start time or the posture sensor (12) senses an external tilt or vibration trigger, the micro control unit (11) is turned on and works.

3. A level point low power consumption monitoring system based on multiple triggering modes according to claim 2, characterized in that: The multi-sensor trigger unit further comprises an infrared sensor (13), and the infrared sensor (13) is used to detect a living body. When a living body is detected, the infrared sensor (13) triggers the micro control unit (11) to control the speaker (19) and the camera (18) to work respectively.

4. A level point low power consumption monitoring system based on multiple triggering modes according to claim 2 or 3, characterized in that: The multi-sensor trigger unit further comprises a photosensitive sensor (14), and the photosensitive sensor (14) is used to collect trigger signals at a close distance. When a person mistakenly moves or removes a leveling point, the photosensitive sensor (14) triggers the microcontroller unit (11) to control the speaker (19) and the camera (18) to work respectively.

5. A level point low power consumption monitoring system based on multiple triggering modes according to claim 2 or 3, characterized in that: The multi-sensor trigger unit further comprises a touch sensor (15), wherein the touch sensor (15) is used to collect touch signals to implement a touch switch function, and is used for restarting, arming and disarming settings of the device.

6. A level point low power consumption monitoring system based on multiple triggering modes according to claim 2 or 3, characterized in that: The multi-sensor trigger unit also includes a vibration sensor (16), which is a mechanical vibration switch sensor for collecting vibration signals. When external vibration is detected, the vibration sensor (16) triggers the micro control unit (11) to control the speaker (19) and the camera (18) to work respectively.

7. The low-power monitoring system for leveling points based on multiple triggering modes according to claim 1 is characterized in that: The micro control unit (11) is also connected to a USB debugging interface (10) for program burning, debugging, and USB power supply.

8. The low-power monitoring system for leveling points based on multiple triggering modes according to claim 1 is characterized in that: It also includes a power module, which is used to supply power to the monitoring system. The power module is provided with a main switch for controlling the power-off of the system.

9. The low-power monitoring system for leveling points based on multiple triggering modes according to claim 1 is characterized in that: The micro control unit (11) is a low-power embedded microprocessor.

10. The low-power monitoring system for leveling points based on multiple triggering modes according to claim 1, characterized in that: The communication module (110) is a NB-IoT wireless communication module, a 4G wireless communication module or a LoRa wireless communication module.

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