CN216255683U

CN216255683U - Device for monitoring correct wearing of safety helmet by constructor

Info

Publication number: CN216255683U
Application number: CN202122667846.9U
Authority: CN
Inventors: 周卫民; 吴仕旭
Original assignee: Shenzhen Vodofo Science And Technology Co ltd
Current assignee: Shenzhen Vodofo Science And Technology Co ltd
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2022-04-12
Anticipated expiration: 2031-11-01

Abstract

The utility model discloses a device for monitoring that a constructor correctly wears a safety helmet, which comprises a safety helmet body, a detection device and a monitoring terminal, wherein the detection device is used for detecting whether the constructor correctly wears the safety helmet or not; the detection device comprises a shell, wherein a PCBA circuit board is arranged in the shell, and a power module, an MCU module, an infrared sensor, a six-axis sensor, a voice broadcast module and a first communication module are mounted on the PCBA circuit board; the power supply module is electrically connected with the MCU module, the infrared sensor, the six-axis sensor, the voice broadcast module and the first communication module respectively; the MCU module is respectively electrically connected with the infrared sensor and the six-axis sensor, the MCU module is electrically connected with the first communication module, and the first communication module is respectively electrically connected with the voice broadcast module and the monitoring terminal. According to the utility model, whether the safety helmet is normally worn or not is detected by the distance measurement function of the infrared sensor and the motion state measurement function of the six-axis sensor, so that the occurrence of alarm false triggering events is reduced; and remote monitoring is realized through the first communication module and the monitoring terminal.

Description

Device for monitoring correct wearing of safety helmet by constructor

Technical Field

The utility model belongs to the technical field of head-mounted equipment, and particularly relates to a device for monitoring that a constructor correctly wears a safety helmet.

Background

In a construction site, safety helmets are an important guarantee for guaranteeing the safety of construction personnel, however, the potential safety hazard of building construction always exists because part of the construction personnel do not strictly execute the regulation of wearing the safety helmets. Therefore, it is very important to monitor whether the personnel wear the safety helmet regularly during the construction process.

In the prior art, an infrared sensor is usually arranged in a safety helmet to detect whether the safety helmet is worn, and then information is sent to a remote monitoring terminal. However, the way of detection only by the infrared sensor has the following drawbacks: firstly, the mode easily causes false triggering, namely the information of the worn safety helmet is sent to the far end as long as the infrared sensor detects the reflected infrared signal, but actually, the information of the worn safety helmet can be also sent by shielding the infrared sensor by hands, so that part of constructors can avoid intelligent detection of wearing the safety helmet by using technical holes; secondly, the prompt message of whether the safety helmet is worn can only be uploaded to a remote monitoring terminal in the mode, but the fact that whether the constructor correctly wears the safety helmet cannot be prompted, so that the phenomenon that the safety helmet is worn irregularly is quite common.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to provide a device for monitoring the correct wearing of a crash helmet by a constructor, which solves at least one of the problems of the prior art.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a device for monitoring that a constructor correctly wears a safety helmet, which comprises a safety helmet body, a detection device arranged on the safety helmet body and a monitoring terminal in communication connection with the detection device, wherein the detection device is arranged on the safety helmet body;

the detection device comprises a shell, the shell is mounted on the inner wall of the front side of the safety helmet body, a PCBA circuit board is arranged in the shell, and a power module, an MCU module, an infrared sensor, a six-axis sensor, a voice broadcast module and a first communication module are mounted on the PCBA circuit board;

the power supply module is electrically connected with the MCU module, the infrared sensor, the six-axis sensor, the voice broadcast module and the first communication module respectively;

the input end of the MCU module is respectively and electrically connected with the output end of the infrared sensor and the output end of the six-axis sensor, the output end of the MCU module is electrically connected with the input end of the first communication module, and the output end of the first communication module is respectively and electrically connected with the input end of the voice broadcast module and the input end of the monitoring terminal.

In a possible design, a light hole is formed in one side of the shell facing the head of the human body, and the infrared signal emitted by the infrared sensor can penetrate out of the light hole.

In a possible design, when the infrared signal that infrared sensor received reaches a first signal threshold, just the angle data that six sensors gathered reach the angle threshold, the MCU module will wear qualified information through first communication module sends respectively to monitor terminal with the voice broadcast module.

In a possible design, when the infrared signal received by the infrared sensor is smaller than the first signal threshold, the MCU module sends the information that is not worn to the monitoring terminal and the voice broadcast module through the first communication module, respectively.

In one possible design, the power module is powered using a polymer lithium battery power supply.

In one possible design, the monitoring terminal comprises a central controller, an alarm module, a second communication module and a display module, wherein the central controller is electrically connected with the alarm module, the second communication module and the display module respectively, and the second communication module is in communication connection with the first communication module.

In one possible design, the first communication module and the second communication module are both GSM communication modules or bluetooth communication modules.

In one possible design, the detection device further includes a temperature sensor, and the temperature sensor is electrically connected to the power supply module and the MCU module, respectively.

Has the advantages that:

according to the utility model, the infrared sensor and the six-axis sensor are simultaneously arranged on the safety helmet body, whether the safety helmet is worn or not is detected by utilizing the distance measuring function of the infrared sensor, and whether the safety helmet is worn according to the standard or not and whether a safety helmet falling event occurs or not is detected by utilizing the motion state measuring function of the six-axis sensor, so that the occurrence of alarm false triggering events is reduced; in addition, when the safety helmet is successfully worn and taken off, the voice broadcasting module is used for giving an alarm, wearing information of the safety helmet is sent to a remote monitoring terminal through the first communication module, and remote monitoring is achieved. The detection device adopted by the utility model is integrally packaged, the structure is simple, the detection efficiency is high, the power consumption is lower, and the service life of the device is prolonged.

Drawings

FIG. 1 is a block diagram of a sensor-based headgear wear monitoring device in this example;

FIG. 2 is a schematic structural view of the detecting unit in this example;

FIG. 3 is a schematic structural view of the helmet body with the detection device installed therein in this example;

FIG. 4 is a schematic circuit diagram of the MCU module in this example;

FIG. 5 is a schematic circuit diagram of the infrared sensor in this example;

FIG. 6 is a schematic circuit diagram of a six-axis sensor according to the present embodiment;

fig. 7 is a schematic circuit diagram of a first communication module according to the present embodiment;

fig. 8 is a schematic circuit diagram of the voice broadcast module in this embodiment.

Wherein, 1-the safety helmet body; 2-a detection device; 3-monitoring the terminal; 4-a shell; 5-a power supply module; 6-MCU module; 7-an infrared sensor; 8-six axis sensors; 9-voice broadcasting module; 10-a first communication module; 12-a central controller; 13-an alarm module; 14-a second communication module; 15-a display module; 16-temperature sensor.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments in the present description, belong to the protection scope of the present invention.

Examples

As shown in fig. 1 to 8, the present embodiment provides a device for monitoring that a constructor correctly wears a safety helmet, comprising a safety helmet body 1, a detection device 2 disposed on the safety helmet body 1, and a monitoring terminal 3 communicatively connected to the detection device 2; the detection device 2 comprises a shell 4, the shell 4 is mounted on the inner wall of the front side of the helmet body 1, a Printed Circuit Board Assembly (PCBA) Circuit Board is arranged inside the shell 4, and a power module 5, an MCU (micro controller Unit) module, an infrared sensor 7, a six-axis sensor 8, a voice broadcast module 9 and a first communication module 10 are mounted on the PCBA Circuit Board; the power module 5 is electrically connected with the MCU module 6, the infrared sensor 7, the six-axis sensor 8, the voice broadcast module 9, and the first communication module 10, respectively; the input end of the MCU module 6 is respectively electrically connected with the output end of the infrared sensor 7 and the output end of the six-axis sensor 8, the output end of the MCU module 6 is electrically connected with the input end of the first communication module 10, and the output end of the first communication module 10 is respectively electrically connected with the input end of the voice broadcast module 9 and the input end of the monitoring terminal 3.

The infrared sensor 7 includes an infrared signal emitting diode and an infrared signal receiving diode, and emits an infrared signal of a specific frequency through the infrared signal emitting diode, and receives a signal reflected by the infrared signal of the specific frequency through the infrared signal receiving diode, that is, the distance between obstacles is measured by using different signal reflection intensities of the distance between the infrared signal and the obstacle. Preferably, a light-transmitting hole (not shown) is formed in a side of the housing 4 facing the head of the human body, and the infrared signal emitted from the infrared sensor 7 can pass through the light-transmitting hole.

The six-axis sensor 8 is a combination of a three-axis gyroscope and an accelerometer, and can judge the motion state of the current safety helmet based on the sensing information of different motion states and by using an embedded algorithm program, so that the placement direction of the safety helmet is identified.

Preferably, the MCU module 6 may be a processor with an ARM Cortex M0 core, and may be based on a high performance ARM Cortex-M0+ 32-bit RISC (Reduced Instruction Set) core. The MCU integrates a memory protection unit, a high-speed embedded memory, a DMA (direct memory access), a wide range of system functions, an enhanced I/O (input-output serial port), and peripheral devices. These devices provide standard communication interfaces, a 12-bit ADC (assembler instruction) with up to 19 channels, a low-power RTC (Real Time Clock), a Clock chip), an advanced control PWM (Pulse width modulation) timer, five general purpose 16-bit timers, two basic watchdog timers and a SysTick timer. The MCU is allowed to operate in an ambient temperature range of-40 to 85 ℃ and can operate under a power supply voltage of 2.0V to 3.6V, so that the cruising ability of the detection device 2 is further improved; the VBAT of the MCU directly operates the battery input to supply power to the RTC and the backup register, and therefore safety and stability of equipment data are guaranteed.

In a possible design, when the infrared signal received by the infrared sensor 7 reaches a first signal threshold value, and the angle data acquired by the six-axis sensor 8 reaches an angle threshold value, the MCU module 6 sends the worn information to the monitoring terminal 3 and the voice broadcast module 9 through the first communication module 10, respectively. The first signal threshold value is the received signal strength value when the safety helmet is normally worn on the head of a human body, the infrared signal is reflected back to the signal receiving diode by the head as an obstacle.

In a possible design, when the infrared signal received by the infrared sensor 7 is smaller than the first signal threshold, the MCU module 6 sends the information that is not worn to the monitor terminal 3 and the voice broadcast module 9 through the first communication module 10, respectively.

In one possible design, in order to provide a sustainable power supply for the detection device 2, the power module 5 is powered by a polymer lithium battery power supply, wherein the polymer lithium battery power supply has various advantages of high specific energy, miniaturization, ultra-thinning, light weight, high safety and the like. Based on such advantages, the lithium polymer battery can be made into any shape and capacity, so as to meet the power supply requirement of the detection device 2 in the embodiment; and it adopts the plastic-aluminum packing, and inside problem appearing can show through the extranal packing immediately, even if there is the potential safety hazard, also can not explode, only can the tympanites. In polymer batteries, the electrolyte serves the dual function of a separator and an electrolyte: on one hand, the positive and negative electrode materials are isolated like a diaphragm, so that self-discharge and short circuit do not occur in the battery, and on the other hand, lithium ions are conducted between the positive and negative electrodes like electrolyte. The polymer electrolyte not only has good conductivity, but also has the characteristics of light weight, good elasticity, easy film formation and the like of a high polymer material, and meets the requirements of light weight, safety, high efficiency and environmental protection of a chemical power supply.

In a possible design, the monitoring terminal 3 includes a central controller 12, an alarm module 13, a second communication module 14 and a display module 15, the central controller 12 is electrically connected to the alarm module 13, the second communication module 14 and the display module 15, respectively, and the second communication module 14 is communicatively connected to the first communication module 10. After the first communication module 10 sends the information about wearing the safety helmet to the central controller 12 through the second communication module 14, if there is abnormal information such as unqualified wearing, an alarm module 13 may give an alarm to remind monitoring personnel to pay attention, and preferably, the display module 15 may also visually display whether the construction personnel in each construction site wear the safety helmet regularly, so as to achieve remote monitoring.

In one possible design, the first communication module 10 and the second communication module 14 are GSM (Global System For Mobile Communications) communication modules or bluetooth communication modules.

In a possible design, the detection device 2 further includes a temperature sensor 16, and the temperature sensor 16 is electrically connected to the power module 5 and the MCU module 6, respectively, so that it can be further determined that the obstacle encountered by the infrared signal emitted by the infrared sensor 7 is a human head.

Wherein, the specific theory of operation of the correct device of wearing the safety helmet of monitoring constructor of this embodiment is as follows:

firstly, infrared sensor 7 sends infrared signal through emitting diode, and infrared signal wears out through the light trap, and when constructor was wearing or when taking off the safety helmet, infrared sensor 7 was sent out infrared signal transmitter and received the infrared signal who reflects back through the light trap.

When the detection device 2 is worn on the head of a human body, the infrared signal transmitting tube transmits a specific infrared signal, the infrared signal is blocked by the head of the human body and is reflected, the reflected infrared signal is received by the receiving diode, the fact that an obstacle exists in front of the detection device 2 or the safety helmet is worn on the head of the human body can be judged according to the fact that whether the distance of the obstacle reaches a set distance threshold value or not can be judged according to the strength of the reflected light, and when the distance of the obstacle is basically consistent with the distance between the head of the human body and the infrared sensor 7 during normal wearing, the safety helmet can be worn on the head of the human body; and at this moment, the six-axis sensor 8 judges that the wearing condition of the safety helmet meets the condition of triggering the helmet wearing alarm, namely, the horizontal plane of the detection device 2 is in a relative balance state, and the precondition of triggering the helmet wearing alarm is reached, so that the alarm prompt can be carried out through the voice broadcast module 9.

Then, the MCU module 6 receives the information transmitted by the infrared sensor 7 and the six-axis sensor 8, and after the MCU module 6 processes the information, if the conclusion that the safety helmet is normally worn on the head of a human body is obtained, the information is transmitted to the GSM communication module, the GSM communication module rapidly transmits a qualified worn alarm signal to the monitoring terminal 3, and meanwhile, the GSM communication module plays the worn voice information through the voice broadcasting module 9.

Wherein, when the safety helmet is taken off from human head, the barrier in the front of infrared sensor 7 is cleared away, the infrared signal that reflects back weakens, thereby calculate the distance of barrier and exceed the threshold value of settlement, because take off the cap warning and need not judge the state that detection device 2 put, then MCU module 6 receives the information back that infrared sensor 7 transmitted, handle the conclusion that can draw "the safety helmet does not wear the head of people" to the information, give GSM communication module this conclusion information transmission, GSM communication module conveys "not wearing" alarm signal to monitor terminal 3 rapidly, GSM communication module plays "not wearing" speech information through voice broadcast module 9 simultaneously.

Wherein, proved by experiments, the detection process of the whole safety helmet wearing of the embodiment can be completed within 3s, and the detection efficiency is very high.

Based on the above disclosure, in the embodiment, the infrared sensor 7 and the six-axis sensor 8 are simultaneously arranged on the helmet body 1, the distance measurement function of the infrared sensor 7 is utilized to detect whether the helmet is worn, and the motion state measurement function of the six-axis sensor 8 is utilized to detect whether the helmet is worn according to the standard and whether the helmet falling event occurs, so as to reduce the occurrence of the alarm false triggering event; in addition, when the safety helmet is successfully worn and taken off, the voice broadcast module 9 is used for giving an alarm, the wearing information of the safety helmet is sent to the remote monitoring terminal 3 through the first communication module 10, and remote monitoring is achieved. Wherein, the detection device 2 adopted by the embodiment is integrally packaged, the structure is simple, the detection efficiency is high, the power consumption is lower, the service life of the device is prolonged,

finally, it should be noted that: the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for monitoring that a constructor correctly wears a safety helmet is characterized by comprising a safety helmet body (1), a detection device (2) arranged on the safety helmet body (1) and a monitoring terminal (3) in communication connection with the detection device (2);

the detection device (2) comprises a shell (4), the shell (4) is installed on the inner wall of the front side of the safety helmet body (1), a PCBA circuit board is arranged inside the shell (4), and a power module (5), an MCU module (6), an infrared sensor (7), a six-axis sensor (8), a voice broadcast module (9) and a first communication module (10) are installed on the PCBA circuit board;

the power supply module (5) is electrically connected with the MCU module (6), the infrared sensor (7), the six-axis sensor (8), the voice broadcast module (9) and the first communication module (10) respectively;

the input of MCU module (6) respectively with the output of infrared sensor (7) with the output electricity of six sensors (8) is connected, the output of MCU module (6) with the input electricity of first communication module (10) is connected, the output of first communication module (10) respectively with the input of voice broadcast module (9) with the input electricity of monitor terminal (3) is connected.

2. Device for monitoring the correct wearing of a crash helmet by a constructor according to claim 1, characterized in that the side of the casing (4) facing the head of the human body is provided with a light-transmitting hole through which the infrared signal emitted by the infrared sensor (7) can pass.

3. The device for monitoring the correct wearing of a safety helmet by a constructor according to claim 1, characterized in that when the infrared signal received by the infrared sensor (7) reaches a first signal threshold and the angle data collected by the six-axis sensor (8) reaches an angle threshold, the MCU module (6) sends the information of wearing qualification to the monitoring terminal (3) and the voice broadcast module (9) through the first communication module (10), respectively.

4. The device for monitoring the correct wearing of a safety helmet by a constructor according to claim 3, characterized in that when the infrared signal received by the infrared sensor (7) is less than the first signal threshold, the MCU module (6) sends the information not worn to the monitoring terminal (3) and the voice broadcasting module (9) through the first communication module (10), respectively.

5. Device for monitoring the correct wearing of a crash helmet by a constructor according to claim 1, characterized in that the power module (5) is powered with a polymer lithium battery power supply.

6. Device for monitoring the correct wearing of a crash helmet by a constructor according to claim 1, characterized in that the monitoring terminal (3) comprises a central controller (12), an alarm module (13), a second communication module (14) and a display module (15), the central controller (12) being electrically connected with the alarm module (13), the second communication module (14) and the display module (15), respectively, the second communication module (14) being in communication connection with the first communication module (10).

7. Device for monitoring the correct wearing of a crash helmet by a constructor according to claim 6, characterized in that the first communication module (10) and the second communication module (14) are both GSM communication modules or Bluetooth communication modules.

8. Device for monitoring the correct wearing of a crash helmet by a constructor according to claim 1, characterized in that the detection means (2) further comprise a temperature sensor (16), the temperature sensor (16) being electrically connected with the power supply module (5) and the MCU module (6), respectively.