CN114711503A

CN114711503A - Safety helmet with communication and positioning functions

Info

Publication number: CN114711503A
Application number: CN202210483750.3A
Authority: CN
Inventors: 晏辉阳
Original assignee: Shenzhen Vodofo Science And Technology Co ltd
Current assignee: Shenzhen Vodofo Science And Technology Co ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-07-08

Abstract

The invention discloses a safety helmet with communication and positioning functions, which has the functions of personnel position monitoring and real-time voice talkback, can timely position and timely remind constructors and timely provide remote guidance and emergency rescue in case of emergency, and can also carry out real-time voice reminding to correctly take the helmet and automatically remind and record a management side terminal when the constructors do not correctly wear the safety helmet in a specified place, thereby meeting the requirements of the management side on position monitoring management and safety management of building site personnel in all weather.

Description

Safety helmet with communication and positioning functions

Technical Field

The invention belongs to the technical field of construction safety protection, and particularly relates to a safety helmet with communication and positioning functions.

Background

On a construction site, various large-scale mechanical equipment and various building materials exist, so that safety accidents frequently occur, workers must be required to wear safety helmets before entering the construction site to prevent falling objects, the head safety of the workers is guaranteed, and in order to further reduce the probability of safety accidents, some construction companies paying attention to the safety of the construction site can carry out safety training by the safety workers before working every day, and although certain effects are received, the safety training is frequently carried out in a form, so that the safety management is greatly reduced.

At present, the most common construction site safety helmet in the market is only a common safety helmet without any function, only plays a basic safety protection function, and has the following disadvantages: the position of the constructor cannot be determined, the constructor cannot communicate with the constructor, and when the constructor meets other dangerous factors or emergencies on site, the constructor cannot be positioned in time, reminded of the constructor in time and provided with remote guidance and emergency assistance in time, so that the situation expansion cannot be avoided, and therefore, the safety helmet capable of improving the management effect and the safety protection effect on the constructor is provided at will.

Disclosure of Invention

The invention aims to provide a safety helmet with communication and positioning functions, which solves the problems that the existing safety helmet cannot determine the position of a constructor and cannot communicate with the constructor, so that the constructor cannot be positioned in time, remind the constructor in time and provide remote guidance and emergency rescue in time when encountering other dangerous factors or emergency on site.

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

in a first aspect, the present invention provides a safety helmet with communication and positioning functions, comprising: the control module, the GSM module, the positioning module and the voice communication module are arranged on the safety helmet;

the positioning module is electrically connected with the GSM module through the control module and is used for transmitting the position information of the safety helmet to a terminal of a management party through the GSM module;

the voice call module comprises a microphone, a power amplifier, a loudspeaker and a call dialing button, wherein the call dialing button is electrically connected with the GSM module through the control module and is used for initiating a voice call to the management party terminal through the GSM module when pressed down;

the microphone is electrically connected with the audio signal input end of the GSM module and used for transmitting the collected employee audio signals to the GSM module so as to transmit the employee audio signals to the management side terminal through the GSM module;

the audio signal output end of the GSM module is electrically connected with the input end of the power amplifier, the output end of the power amplifier is electrically connected with the loudspeaker, the power amplifier is used for carrying out signal amplification on the voice signal received by the GSM module and playing the amplified voice signal through the loudspeaker.

Based on the disclosure, the invention is provided with the positioning module, so that the position information of the safety helmet can be acquired in real time through the positioning module, and the position information is uploaded to the terminal of the management party, therefore, the management personnel can acquire the position information of the construction personnel in real time, the positioning of the construction personnel is facilitated, and whether the position of the personnel is correct or not is known; meanwhile, the invention also provides a GSM module and a voice call module, on the basis, a manager can directly talk with a constructor at any time, and can also issue an instruction to the employee in a voice broadcast mode, so that the operation of the employee on the site is not influenced, the call safety is improved, and meanwhile, if the constructor needs to talk with the manager, the manager can establish call connection only by pressing a call dialing button; through the design, the safety helmet provided by the invention has personnel position monitoring and a real-time voice talkback function, can be used for timely positioning and timely reminding construction personnel and timely providing remote guidance and emergency rescue in case of emergency, and can meet the requirements of a manager on position monitoring management and safety management of construction site personnel in all weather.

In one possible design, the GSM module includes an L610/EC200S type communication chip, a SIM chip, and a SIM card, wherein the SIM card is electrically connected to the L610/EC200S type communication chip through the SIM chip, and the microphone is electrically connected to an audio signal input terminal of the L610/EC200S type communication chip, so as to transmit a collected employee audio signal to the L610/EC200S type communication chip;

the audio signal output end of the L610/EC200S type communication chip is electrically connected with the input end of the power amplifier so as to transmit the received voice signal to the power amplifier.

Based on the disclosure, the invention discloses a specific circuit composition of a GSM module, namely a SIM card, a SIM chip and an L610/EC200S type communication chip are used for realizing telephone communication, and meanwhile, the L610/EC200S type communication chip also supports WIFI and 4G communication, so that the voice call requirements can be met under different use environments.

In one possible design, the GSM module further includes a signal transmission control circuit, a signal reception control circuit, and a chip wake-up circuit;

the controlled end of the signal emission control circuit is electrically connected with the first control end of the control module, and the control end of the signal emission control circuit is electrically connected with the signal emission end of the L610/EC200S type communication chip and is used for turning on or off the signal emission function of the L610/EC200S type communication chip;

the controlled end of the signal receiving control circuit is electrically connected with the second control end of the control module, and the control end of the signal receiving control circuit is electrically connected with the signal receiving end of the L610/EC200S type communication chip and is used for turning on or off the signal receiving function of the L610/EC200S type communication chip;

and the controlled end of the chip wake-up circuit is electrically connected with the third control end of the control module, and the control end of the chip wake-up circuit is electrically connected with the WKUP pin of the L610/EC200S type communication chip and is used for waking up the L610/EC200S type communication chip.

Based on the above disclosure, the signal transmitting control circuit can be started when a constructor presses a call dialing button, so as to open the signal transmitting function of the communication chip, so as to send an audio signal of a staff collected by a microphone to the manager terminal, and similarly, the signal receiving control circuit can be opened when the manager terminal initiates a voice call to the GSM module, so as to open the signal receiving function of the communication chip, so as to receive a voice signal sent by the manager, so as to play the voice signal through a loudspeaker later, and the chip awakening circuit can be started when the constructor presses the call dialing button, so that the communication chip is in a working state, so as to realize the voice call between the constructor and the manager.

In one possible design, the signal transmission control circuit, the signal reception control circuit and the chip wake-up circuit each include a first triode, a first resistor and a first capacitor;

aiming at the signal emission control circuit, the collector electrode of the first triode is electrically connected with the first control end, the emitter electrode of the first triode is electrically connected with the signal emission end of the L610/EC200S type communication chip, the base electrode of the first triode is electrically connected with one end of the first resistor and one end of the first capacitor respectively, and the other end of the first resistor and the other end of the first capacitor are electrically connected with the IO port power supply port of the L610/EC200S type communication chip respectively.

Based on the disclosure, the invention discloses a specific circuit structure of the signal emission control circuit, namely, the signal emission function is turned on through a first triode, that is, when the first triode is conducted, the emission function is turned on, otherwise, the emission function is turned off; of course, the same is true of the signal reception control circuit and the chip wake-up circuit principle.

In one possible design, the helmet is provided with a cap-off detection module, wherein the cap-off detection module comprises an LTR-553ALS-WA type short-distance detection chip and an SC7a20 type acceleration sensor chip, and the LTR-553ALS-WA type short-distance detection chip and the SC7a20 type acceleration sensor chip are respectively and electrically connected with the control module.

Based on the disclosure, the invention is also provided with a cap-off detection module, namely, a short-distance detection chip of LTR-553ALS-WA type is used for detecting the distance between the safety cap and the top of the head of a constructor, meanwhile, an acceleration sensor chip of SC7A20 type is used for detecting the acceleration of the safety cap, and the controller can judge whether the constructor is off the cap or not based on the detected information; through the design, when the constructor does not correctly wear the safety helmet at the specified place, the voice reminding is carried out to correctly take the helmet, and meanwhile, the reminding record is carried out to the terminal of the management side.

In one possible design, a lighting module is further disposed on the helmet, wherein the lighting module includes: the lighting control circuit, the lighting power supply circuit and the first light emitting diode;

the output end of the illumination control circuit is electrically connected with the illumination signal controlled end of the control module, the illumination signal control end of the control module is electrically connected with the controlled end of the illumination power supply circuit, wherein the power supply end of the illumination power supply circuit is electrically connected with a first direct current power supply, and the output end of the illumination power supply circuit is electrically connected with the first light emitting diode.

Based on the disclosure, the safety helmet is also provided with the lighting module, so that lighting can be provided for constructors in emergency, and the safety protection of the constructors is further improved.

In one possible design, the lighting control circuit includes a lighting control key and the lighting power supply circuit includes a TMI5101 type DC-DC buck chip;

the lighting control key is respectively and electrically connected with one end of a second resistor, one end of a third resistor and the lighting signal controlled end, wherein the other end of the second resistor is electrically connected with a second direct current power supply, and the other end of the third resistor is grounded;

the lighting signal control end of the control module is electrically connected with the enabling end of the TMI5101 type DC-DC buck chip, the power supply end of the TMI5101 type DC-DC buck chip is electrically connected with the first direct current power supply, the output end of the TMI5101 type DC-DC buck chip is electrically connected with the anode of the first light-emitting diode, one end of the second capacitor and one end of the third capacitor through a first inductor, the cathode of the first light-emitting diode is electrically connected with one end of a fourth resistor and the voltage feedback end of the TMI5101 type DC-DC buck chip respectively, and the other end of the fourth resistor, the other end of the second capacitor and the other end of the third capacitor are grounded respectively.

In one possible design, the safety helmet is further provided with a power supply module, wherein the power supply module comprises a charging interface, a power supply management circuit, a rechargeable battery, a double-pole four-throw switch, a battery electric quantity monitoring circuit and a linear voltage stabilizing circuit;

the charging interface is electrically connected with the input end of the power management circuit, the output end of the power management circuit is electrically connected with a first contact end of the double-pole four-throw switch, and a second contact end of the double-pole four-throw switch is electrically connected with the battery electric quantity monitoring circuit, wherein the second contact end of the double-pole four-throw switch is also electrically connected with a source electrode of a field effect tube, the movable end of the double-pole four-throw switch is electrically connected with the rechargeable battery, and the output end of the battery electric quantity monitoring circuit is electrically connected with a grid electrode of the field effect tube;

the drain electrode of the field effect transistor is electrically connected with the input end of the linear voltage stabilizing circuit, and the output end of the linear voltage stabilizing circuit is respectively and electrically connected with the power supply end of the control module, the power supply end of the GSM module, the power supply end of the positioning module and the power supply end of the power amplifier.

Based on the disclosure, the invention further provides a power module, wherein a charging interface (such as a USB interface or a Type-c interface) is used for charging the rechargeable battery, and the rechargeable battery supplies power to the modules.

In one possible design, the battery charge monitoring circuit includes: a CN61CN33 type electric quantity detection chip and a second triode;

the input end of the CN61CN33 type electric quantity detection chip is electrically connected to the second contact end of the double-pole four-throw switch, and the output end of the CN61CN33 type electric quantity detection chip is electrically connected to one end of a fifth resistor and one end of a sixth resistor respectively, wherein the other end of the sixth resistor is electrically connected to the base of the second triode, and the collector of the second triode is electrically connected to the gate of the field effect transistor;

the collector of the second triode is also electrically connected with one end of a seventh resistor, wherein the other end of the seventh resistor and one end of the fifth resistor are respectively electrically connected with the second contact end of the double-pole four-throw switch, and the emitter of the second triode is grounded.

Based on the above disclosure, the second triode is controlled to be switched on and off through the CN61CN33 type electric quantity detection chip, so as to control the on and off of the field effect transistor, so that the rechargeable battery is controlled to supply power to each module through the on and off of the field effect transistor.

In one possible design, the control module adopts an STM32G070CB control chip and a peripheral circuit thereof, the positioning module adopts a UB7020 type Beidou positioning chip, and the power amplifier adopts a PA4871 type power amplification chip.

Drawings

FIG. 1 is a control block diagram of a helmet with communication and positioning functions according to the present invention;

FIG. 2 is a specific circuit diagram of the control module according to the present invention;

FIG. 3 is a specific circuit diagram of a Flash circuit provided by the present invention;

FIG. 4 is a specific circuit diagram of a positioning module according to the present invention;

FIG. 5 is a detailed circuit diagram of a power circuit of the positioning module provided in the present invention;

FIG. 6 is a detailed circuit diagram of a first portion of an L610/EC200S type communication chip provided by the present invention;

FIG. 7 is a detailed circuit diagram of a second portion of an L610/EC200S type communication chip provided by the present invention;

fig. 8 is a specific circuit diagram of a microphone provided by the present invention;

fig. 9 is a specific circuit diagram of the power amplifier provided in the present invention;

FIG. 10 is a specific circuit diagram of a call-dialing button provided by the present invention;

FIG. 11 is a circuit diagram of the SIM card chip and the SIM card according to the present invention;

fig. 12 is a specific circuit diagram of a signal transmission control circuit provided in the present invention;

fig. 13 is a specific circuit diagram of a signal receiving control circuit according to the present invention;

FIG. 14 is a specific circuit diagram of the chip wake-up circuit provided in the present invention;

fig. 15 is a power supply circuit diagram of a GSM module provided in the present invention;

FIG. 16 is a specific circuit diagram of a LTR-553ALS-WA type proximity detection chip provided by the present invention;

fig. 17 is a specific circuit diagram of the SC7a20 type acceleration sensor chip provided by the present invention;

FIG. 18 is a specific circuit diagram of the lighting control circuit provided in the present invention;

FIG. 19 is a specific circuit diagram of the lighting power supply circuit provided by the present invention;

FIG. 20 is a specific circuit diagram of a power module provided in the present invention;

FIG. 21 is a pin connection circuit diagram of the control module and the power module according to the present invention;

FIG. 22 is a detailed circuit diagram of a status indication circuit provided in the present invention;

FIG. 23 is a circuit diagram of a double-pole, four-throw switch and a control module according to the present invention;

fig. 24 is a specific circuit diagram of the RT9078-33GJ5 type linear regulator chip provided by the present invention;

fig. 25 is a flowchart illustrating steps of a communication method based on a helmet with communication and positioning functions according to the present invention.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely illustrative of example embodiments of the invention. This invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.

It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.

It should be understood that, for the term "and/or" as may appear herein, it is merely an associative relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, B exists alone, and A and B exist at the same time; for the term "/and" as may appear herein, which describes another associative object relationship, it means that two relationships may exist, e.g., a/and B, may mean: a exists independently, and A and B exist independently; in addition, with respect to the character "/" which may appear herein, it generally means that the former and latter associated objects are in an "or" relationship.

Examples

Referring to fig. 1 to 24, the safety helmet with communication and positioning functions provided in the first aspect of the present embodiment may include, but is not limited to: the system comprises a control module, a GSM module, a positioning module and a voice communication module which are arranged on a safety helmet, wherein the positioning module is used for positioning the position information of the safety helmet in real time and sending the position information to a management side terminal (which can be but is not limited to a mobile phone) so as to realize the position positioning of the safety helmet corresponding to constructors, namely the positioning module is electrically connected with the GSM module through the control module so as to realize the transmission of the position information; optionally, the positioning module may be but not limited to adopt a UB7020 type beidou positioning chip, the control module may be but not limited to adopt an STM32G070CB control chip and a peripheral circuit thereof (which may be but not limited to include a Flash circuit and a crystal oscillator circuit), and the circuit diagrams may be as shown in fig. 2, fig. 3 and fig. 4, specifically, an RxD1 pin and a TxD1 pin of the UB7020 type beidou positioning chip U9 are electrically connected to a 23 th pin and a 22 th pin of the STM32G070CB control chip, respectively, so as to send the position information to the STM32G070CB control chip, so as to send the position information to the management side terminal through the GSM module.

Furthermore, in this embodiment, a power supply circuit is further provided for the UB 7020-type Beidou positioning chip U9, as shown in fig. 5, that is, stable power supply to the UB 7020-type Beidou positioning chip U9 is realized by using the SGM2019-3.3YN 5G-type linear voltage stabilizing chip U6, wherein an input end of the SGM2019-3.3YN 5G-type linear voltage stabilizing chip U6 is electrically connected to a 4V dc power supply, and an output end of the SGM2019-3.3YN 5G-type linear voltage stabilizing chip U6 is electrically connected to a VCC pin of the UB 7020-type Beidou positioning chip U9.

When the system is applied specifically, the GSM module can initiate voice call to the management side terminal and can also receive the voice call initiated by the management side terminal, so that the two-way call between constructors and managers can be realized.

In this embodiment, the exemplary voice call module may include, but is not limited to: the system comprises a microphone, a power amplifier, a loudspeaker and a call dialing button, wherein the call dialing button is electrically connected with the GSM module through the control module and is used for initiating voice call to the management side terminal through the GSM module when a constructor presses the button, and meanwhile, the call dialing button is a key button.

Meanwhile, after a voice call is initiated to a management party terminal, an audio signal can be collected through a microphone, and a voice signal transmitted by the management party terminal is played through a power amplifier and a loudspeaker, namely, the microphone is electrically connected with an audio signal input end of the GSM module and used for transmitting the collected employee audio signal to the GSM module so as to transmit the employee audio signal to the management party terminal through the GSM module, thereby realizing uploading of voice of constructors, an audio signal output end of the GSM module is electrically connected with an input end of the power amplifier, an output end of the power amplifier is electrically connected with the loudspeaker and used for amplifying the voice signal received by the GSM module and playing the amplified voice signal through the loudspeaker, thereby realizing the voice call between the constructors and the managers, therefore, the safety helmet has a real-time voice talkback function, so that constructors can be timely reminded and remote guidance can be timely provided in case of emergency.

In the present embodiment, a circuit diagram of the call dialing button is shown in fig. 10, and J5 in fig. 10 represents the call dialing button, wherein the call dialing button is electrically connected to the 11 th pin of the STM32G070CB control chip, and is also electrically connected to the second dc power supply through a resistor R37, and is grounded through a resistor R39; therefore, only after the call dialing button is pressed (or continuously and briefly pressed for 2 times), the GSM module can be started based on the STM32G070CB control chip, and therefore voice call is achieved.

Therefore, through the explanation, the safety helmet provided by the embodiment has the functions of real-time positioning and real-time voice communication, can be used for more conveniently monitoring and managing the staff in real time by managers, improves the management effect, and can meet the requirements of managers on position monitoring management and safety management of workers in a construction site all day long.

Referring to fig. 6 to 11, the following circuit structure provides one of GSM (Global System for Mobile Communications) modules:

in a specific application, for example, the GSM module may include, but is not limited to: an L610/EC200S type communication chip, a SIM chip, and a SIM (Subscriber Identity Module) card, wherein the SIM card is electrically connected to the L610/EC200S type communication chip through the SIM chip, and further, specific circuit connection relationships among the SIM card, the SIM chip, and the L610/EC200S type communication chip are shown in fig. 6, 7, and 11.

Based on the design, the SIM card and the management side terminal are adopted to realize telephone communication, and meanwhile, the L610/EC200S type communication chip also supports 4G and WIFI communication, so that voice transmission can be realized based on 4G and WIFI, and therefore, the communication requirements under different use environments can be met, and the use applicability of the invention is improved.

After establishing a voice call with a management terminal, a dialogue between a constructor and a manager can be realized by using a microphone and a speaker, as shown in fig. 7 and 8, the microphone J6 is electrically connected to the audio signal input end of the L610/EC200S type communication chip (i.e. the 75 th pin and the 77 th pin of the L610/EC200S type communication chip), meanwhile, a capacitor C63 is connected in parallel between two output ends of the microphone, and each output end is grounded through a capacitor, i.e. through the capacitor C62 and the capacitor C64 in fig. 8; therefore, the collected employee audio signals can be transmitted to the L610/EC200S type communication chip, and the uploading of the employee audio signals is realized.

Similarly, the audio signal output end of the L610/EC200S type communication chip is electrically connected with the input end of the power amplifier to transmit the received voice signal to the power amplifier, in the embodiment, the PA4871 type power amplifier chip is adopted as the power amplifier, the connection structure of the communication chip and the communication chip of the L610/EC200S type is shown IN fig. 9 and fig. 7, specifically, the IN-pin of the PA4871 type power amplification chip U11 is electrically connected with the 73 rd pin of the communication chip of the L610/EC200S type through a resistor R71 and a capacitor C71 which are sequentially connected IN series, the IN + pin of the PA4871 type power amplification chip U11 is electrically connected with the 74 th pin of the communication chip of the L610/EC200S type through a resistor R73 and a capacitor C71 which are sequentially connected IN series, the SHUTDOWN pin of the PA4871 type power amplification chip U11 is electrically connected with the 20 th pin of the control chip of the STM32G070CB, the pins VOUT1 and VOUT2 of the PA4871 type power amplification chip U11 are electrically connected with a loudspeaker; therefore, through the design, after the L610/EC200S communication chip receives the voice signal sent by the terminal of the management side, the voice signal can be transmitted to the PA4871 power amplification chip U11 for signal amplification processing, and finally played by the loudspeaker J8.

Therefore, through the design, the voice call between the constructor and the manager can be realized by utilizing the microphone, the power amplifier and the loudspeaker, and meanwhile, the issuing of the voice information of the manager can be realized unilaterally based on the L610/EC200S type communication chip, so that the safety helmet provided by the invention has the functions of talkback, call, voice broadcast and the like, a manager can directly talk with the staff through the talkback mode or the telephone mode at any time, and can issue instructions to the staff through the voice broadcast mode, the operation of the staff on the site is not influenced, and the call safety is improved.

Furthermore, the GSM module provided in this embodiment is further provided with a function control unit, wherein the function control unit includes a signal transmitting control circuit, a signal receiving control circuit, and a chip wake-up circuit.

In specific application, the controlled terminal of the signal emission control circuit is electrically connected to the first control terminal of the control module, and the control terminal of the signal emission control circuit is electrically connected to the signal emission terminal of the L610/EC200S type communication chip, and is used for turning on or off the signal emission function of the L610/EC200S type communication chip; similarly, the controlled end of the signal receiving control circuit is electrically connected to the second control end of the control module, and the control end of the signal receiving control circuit is electrically connected to the signal receiving end of the L610/EC200S type communication chip, and is configured to turn on or turn off the signal receiving function of the L610/EC200S type communication chip; and the controlled end of the chip wake-up circuit is electrically connected with the third control end of the control module, and the control end of the chip wake-up circuit is electrically connected with the WKUP pin of the L610/EC200S type communication chip and is used for waking up the L610/EC200S type communication chip.

In this embodiment, the circuit structures of the signal transmission control circuit, the signal reception control circuit and the chip wake-up circuit are the same, that is, the signal transmission control circuit, the signal reception control circuit and the chip wake-up circuit each include a first transistor (including Q11, Q10 and Q12), a first resistor (including R47, R48 and R49) and a first capacitor (including C47, C31 and C48), and referring to fig. 12 to 14, specific circuit connection relations are explained as follows:

for the signal emission control circuit, referring to fig. 12, a collector of the first transistor Q11 is electrically connected to the first control terminal (i.e., the 14 th pin of the STM32G070CB control chip), an emitter of the first transistor Q11 is electrically connected to a signal emission terminal of the L610/EC200S type communication chip (i.e., electrically connected to the TXD pin of the L610/EC200S type communication chip), a base of the first transistor Q11 is electrically connected to one end of the first resistor R47 and one end of the first capacitor C47, respectively, and the other end of the first resistor R47 and the other end of the first capacitor C47 are electrically connected to an IO port power supply port of the L610/EC200S type communication chip, i.e., electrically connected to the VDD _ EXT pin of the L610/EC200S type communication chip, respectively.

Similarly, for the signal receiving control circuit, the emitter of the first transistor Q10 is electrically connected to the second control terminal (i.e., the 13 th pin of the STM32G070CB control chip), the collector of the first transistor Q10 is electrically connected to the signal receiving terminal of the L610/EC200S type communication chip (i.e., electrically connected to the RXD pin of the L610/EC200S type communication chip), the base of the first transistor Q10 is electrically connected to one end of the first resistor R48 and one end of the first capacitor C31, respectively, and the other end of the first resistor R48 and the other end of the first capacitor C31 are electrically connected to the IO port power supply port of the L610/EC200S type communication chip, i.e., electrically connected to the VDD _ EXT pin of the L610/EC200S type communication chip, respectively.

Similarly, for the chip wake-up circuit, the emitter of the first transistor Q12 is electrically connected to the third control terminal (i.e., the 15 th pin of the STM32G070CB control chip), the collector of the first transistor Q12 is electrically connected to the signal receiving terminal of the L610/EC200S type communication chip (i.e., electrically connected to the DTR pin of the L610/EC200S type communication chip), the base of the first transistor Q12 is electrically connected to one end of the first resistor R49 and one end of the first capacitor C48, respectively, and the other end of the first resistor R49 and the other end of the first capacitor C48 are electrically connected to the IO port power supply port of the L610/EC200S type communication chip, i.e., electrically connected to the VDD _ EXT pin of the L610/EC200S type communication chip, respectively.

Therefore, through the design, the first triode is switched on or off by outputting a high level or a low level to the first triode, so that the functions of transmitting and receiving signals of the chip are switched on and off, and the chip is awakened; in this embodiment, for example, when the constructor presses the call dial button, the chip wake-up circuit is turned on, so as to wake up the L610/EC200S type communication chip and make it enter the working mode.

Furthermore, in this embodiment, a power supply circuit is further provided for the GSM module, as shown in fig. 15, for example, the power supply circuit may include, but is not limited to: resistance R29, resistance 40, resistance 30, triode Q8, triode Q4, resistance R28 and field effect transistor Q3, wherein, the connection structure of aforementioned each device is:

an emitter of the triode Q8 is electrically connected with a second direct-current power supply and one end of the resistor R29, a collector of the triode Q8 is electrically connected with one end of the resistor R30, a base of the triode Q8 is electrically connected with one end of the resistor R40, and the other end of the resistor R40 and the other end of the resistor R29 are electrically connected with a 21 st pin of the STM32G070CB control chip; meanwhile, the other end of the resistor R30 is electrically connected to the base of the transistor Q4, the collector of the transistor Q4 is electrically connected to one end of the resistor R28 and the gate of the field-effect transistor Q3, respectively, the other end of the resistor R28 and the source of the field-effect transistor Q3 are electrically connected to the second dc power supply, the drain of the field-effect transistor Q3 is electrically connected to VBAT _ BB and VBAT _ RF pins of the L610/EC200S type communication chip, and the emitter of the transistor Q4 is grounded.

In specific implementation, the present embodiment further provides a decapping detection module on the safety helmet, wherein the decapping detection module includes an LTR-553ALS-WA type short-distance detection chip and an SC7a20 type acceleration sensor chip, as shown in fig. 16 and 17, an SDA pin of the LTR-553ALS-WA type short-distance detection chip is electrically connected to a 34 th pin of an STM32G070CB control chip, an SCL pin of the LTR-553ALS-WA type short-distance detection chip is electrically connected to a 33 th pin of an STM32G070CB control chip, an SDA 32G070CB of the SC7a20 type acceleration sensor chip is electrically connected to a48 th pin of the STM32G070CB control chip, an SCL of the SC7a20 type acceleration sensor chip is electrically connected to a 47 th pin of the STM32G070CB control chip, so as to implement transmission of detection data, specifically, the LTR-ALS-WA type short-distance detection chip can detect the distance between the safety helmet and the top of a constructor 553, on the other hand, the SC7a20 type acceleration sensor chip can detect the acceleration of the helmet, and thus, the STM32G070CB control chip can realize the detection of the uncapping of the helmet based on the detection data.

In this embodiment, when it is detected that a constructor uncaps in a working area, a voice alarm prompt may be performed through a speaker, and simultaneously, uncapping information (which may include, but is not limited to, constructors, positions, and uncapping times corresponding to safety helmets) may be generated and uploaded to a manager terminal, so that the manager performs real-time management; therefore, the safety management of the constructors is further improved.

Preferably, the present embodiment further provides a lighting module on the safety helmet, wherein the lighting module includes, for example: the lighting device comprises a lighting control circuit, a lighting power supply circuit and a first light emitting diode, wherein the output end of the lighting control circuit is electrically connected with a lighting signal controlled end of a control module, and a lighting signal control end of the control module is electrically connected with a controlled end of the lighting power supply circuit, wherein the power supply end of the lighting power supply circuit is electrically connected with a first direct current power supply, and the output end of the lighting power supply circuit is electrically connected with the first light emitting diode; therefore, through the design, illumination can be provided for constructors in emergency, and therefore safety protection of the constructors is further improved.

Referring to fig. 18 and fig. 19, for example, the lighting control circuit includes a lighting control key J7, and the lighting power supply circuit includes a TMI5101 type DC-DC voltage reduction chip, in which the connection relationship among the aforementioned devices is:

referring to fig. 18, the lighting control key J7 is electrically connected to one end of the second resistor R43, one end of the third resistor R44, and the controlled end of the lighting signal (i.e., the 1 st pin of the STM32G070CB control chip), respectively, wherein the other end of the second resistor R43 is electrically connected to the second dc power supply, and the other end of the third resistor R44 is grounded.

Meanwhile, referring to fig. 19, the illumination signal control terminal of the control module (i.e., the 30 th pin of the STM32G070CB control chip) is electrically connected with the enable terminal of the TMI5101 type DC-DC buck chip (i.e., the EN pins of U13 and U14), the power supply terminal (VIN pin) of the TMI5101 type DC-DC voltage reduction chip is electrically connected with the first direct current power supply, wherein, the output end (LX pin) of the TMI5101 type DC-DC voltage reduction chip is electrically connected with the anode of the first light emitting diode D9, one end of a second capacitor C35 and one end of a third capacitor C36 through a first inductor L7, the cathode of the first light emitting diode D9 is electrically connected to one end of a fourth resistor R7 and the voltage feedback end (i.e. FB pin) of the TMI5101 type DC-DC buck chip respectively, and the other end of the fourth resistor R7, the other end of the second capacitor C35 and the other end of the third capacitor C36 are respectively grounded.

Therefore, by the design, when the illumination control key J7 is pressed, the connection between the first light-emitting diode D9 and the first power supply is switched on, and the illumination function is realized.

In the present embodiment, two TMI5101 type DC-DC buck chips (including U13 and U14) and two first light emitting diodes (D9 and D10) are provided by way of example, and the circuit thereof can be seen in fig. 19.

In a specific application, in order to ensure normal operation of each of the aforementioned modules, the embodiment is further provided with a power module, where, for example, the power module may include, but is not limited to: the charging interface, power management circuit, rechargeable battery, double-pole four-throw switch, battery power monitoring circuit and linear voltage stabilizing circuit, wherein, power module's concrete circuit structure is:

referring to fig. 20, the charging interface J1 is electrically connected to the input terminal of the power management circuit, the output terminal of the power management circuit is electrically connected to the first contact terminal of the double pole, four throw switch SW1 (i.e. the 1 st contact of SW 1), the second contact terminal of the double pole four throw switch (i.e. the 4 th contact of SW 1) is electrically connected to the battery charge monitoring circuit, wherein the second contact terminal of the double-pole four-throw switch is also electrically connected with the source electrode of a field effect transistor Q1, the moving terminal of the double-pole four-throw switch SW1 is electrically connected with the rechargeable battery, the output end of the battery power monitoring circuit is electrically connected with the grid electrode of the field effect transistor Q1, the drain electrode of the field effect transistor Q1 is electrically connected with the input end of the linear voltage stabilizing circuit, and the output end of the linear voltage stabilizing circuit is respectively and electrically connected with the power supply end of the control module, the power supply end of the GSM module, the power supply end of the positioning module and the power supply end of the power amplifier.

Through the design, the rechargeable battery is charged by using a charging interface (such as a USB interface or a Type-c interface), the rechargeable battery supplies power for the modules, and the battery power monitoring circuit is further arranged, so that the voltage of the rechargeable battery can be monitored in real time, and the power supply with the rechargeable battery is disconnected when the voltage of the battery is too low, so that the function of protecting the rechargeable battery is achieved.

Referring to fig. 20 and 21, one of the following circuit configurations for providing a battery level monitoring circuit is provided:

in this embodiment, for example, the battery level monitoring circuit may include, but is not limited to: CN61CN33 type electric quantity detection chip U2 and second triode Q2, wherein, the connection structure of aforementioned each device is:

an input end of the CN61CN33 type electricity quantity detection chip U2 is electrically connected to a second contact end of the double-pole four-throw switch SW1, an output end (i.e., RES pin of U2) of the CN61CN33 type electricity quantity detection chip U2 is electrically connected to one end of a fifth resistor R2 and one end of a sixth resistor R4, respectively, wherein the other end of the sixth resistor R4 is electrically connected to a base of the second triode Q2, and a collector of the second triode Q2 is electrically connected to a gate of the field effect transistor Q1.

The collector of the second triode Q2 is further electrically connected to one end of a seventh resistor R3, wherein the other end of the seventh resistor R3 and one end of the fifth resistor R2 are respectively electrically connected to the second contact terminal of the double-pole four-throw switch, and the emitter of the second triode Q2 is grounded.

Therefore, through the foregoing description of the battery power monitoring circuit, the operating principle is that the on-off of the second triode is controlled through the CN61CN33 type power detection chip, so as to control the on-off of the field effect transistor, so that the power supply of the rechargeable battery to each module is controlled through the on-off of the field effect transistor.

In this embodiment, for example, the power management circuit adopts an MP2615 type power management chip, and the linear voltage regulator circuit adopts an RT9078-33GJ5 type linear voltage regulator chip, and specific circuits of both of them can be seen in fig. 20 and fig. 21.

In this embodiment, the second contact terminal of the double-pole-four-throw switch SW1 is also electrically connected to one terminal of a resistor R5, the other terminal of the resistor R5 is electrically connected to the 19 th pin of the STM32G070CB control chip, and the other terminal of the resistor R5 is grounded through a resistor R6 and a capacitor C29, which is shown in a circuit diagram in fig. 23.

Preferably, for example, the drain of the field effect transistor Q1 outputs a 4V power supply, which is a first dc power supply, while the output of the RT9078-33GJ5 linear regulator chip outputs a second dc power supply, and the RT9078-33GJ5 linear regulator chip supplies power to the control module, as shown in fig. 21, which is not described herein again.

In addition, in the present embodiment, a status indicating circuit is further provided to indicate an operating status, wherein the status indicating circuit may include, but is not limited to, a plurality of second light emitting diodes, specifically, an anode of each second light emitting diode is electrically connected to the status indicating terminal of the control module through an eighth resistor, and a cathode of each second light emitting diode is respectively connected to ground, as shown in fig. 22, in the present embodiment, for example, 6 second light emitting diodes (i.e., D2, D3, D5, D6, D7, and D8 in fig. 22) are provided, and the 6 second light emitting diodes function as: d2 is a GSM module work instruction, D3 is a positioning module work instruction, D5 is an instruction that the rechargeable battery is in the process of charging, D6 is a rechargeable battery full charge instruction, and D7 is a fault instruction; d8 indicates that the charging interface is not connected to the power supply, and certainly, a different number of second light emitting diodes may be provided according to the usage requirement, which is not limited herein.

Furthermore, the present embodiment further provides a vibration module on the safety helmet to perform a vibration alert when the helmet is detected to be uncapped or a voice call request sent by the management terminal is received, where, for example, the vibration module may be, but is not limited to, a linear motor.

The following explains the communication method of the safety helmet provided by the invention:

the first method comprises the following steps: the mobile phone end dials the number of the equipment end to carry out talkback;

under the condition that the equipment normally works, the safety helmet equipment is provided with an SOS (emergency call for help) number through a serial port instruction or a short message instruction, the SOS number dials the number of an SIM card in the equipment, the GSM module detects that the number is dialed into the equipment and executes talkback logic in parallel, the GSM module compares and judges the dialed-in number and the SOS number set inside the equipment, if the dialed-in number is consistent with the SOS number cached inside, the GSM module makes the dialed-in telephone through an talkback request, the GSM module processes information transmitted by a mobile phone end and puts the information outside through a loudspeaker, meanwhile, the equipment end processes the information heard by a microphone, and the GSM module transmits the processed information to the mobile phone end to realize the talkback function.

And the second method comprises the following steps: the equipment terminal continuously and briefly presses a call dialing button to dial the SOS number of the mobile phone to realize talkback:

under the condition that the equipment normally works, the safety helmet equipment is provided with an SOS number through a serial port instruction or a short message instruction, a call dialing button on the equipment is manually and continuously pressed for a short time, a control module detects key interruption, information of the key interruption is processed and sent to a GSM module, the GSM module carries out logic judgment after receiving the information, when the judgment is a talkback request, the GSM module judges whether the SOS number is cached in a memory or not, if the SOS number is cached, the GSM module carries out polling dialing of the SOS number, and the SOS number is not accessed and can not be dialed any more after the polling dialing is carried out twice; after the mobile phone is connected with the dialing-in device, the GSM module processes information transmitted by the mobile phone end and plays the information out through the loudspeaker, meanwhile, the device end processes information heard by the microphone, and the GSM module transmits the processed information to the mobile phone end to realize the talkback function.

In this embodiment, when the GSM module does not have an SOS number or a monitoring number, if the mobile phone initiates an intercom call or a monitoring request to the device side, the GSM module user directly interrupts the dial-in request of the mobile phone side; similarly, if the device side initiates the talkback call request, the GSM module is not provided with the SOS number or the monitoring number, and the GSM module directly ignores the talkback request operation.

In a possible design, a second aspect of this embodiment provides, on the basis of the first aspect of this embodiment, a method for talking on the basis of a helmet with communication and positioning functions, including the following steps:

the GSM module stores a plurality of SOS numbers, and the communication method comprises the following steps:

s1, when a user continuously presses a call dialing button n times, judging whether an SOS number is cached in a memory or not, wherein n is a positive integer and is larger than 1;

s2, if yes, sending a voice call request to a mobile phone terminal corresponding to the ith SOS number by taking the ith SOS number as a dialing number, wherein i starts from 1;

s3, judging whether a voice call receiving request sent by the mobile phone terminal corresponding to the ith SOS number is received, if so, establishing call connection between calling equipment and the terminal corresponding to the ith SOS number, otherwise, changing i into i +1, and repeating the step S2 until the voice call receiving request sent by the mobile phone terminal corresponding to the ith SOS number is received;

s4, when the i polls to k, if the voice call receiving request sent by the mobile phone terminal corresponding to the kth SOS number is not received, repeating the step S2 and the step S3 until the voice call receiving request sent by the mobile phone terminal corresponding to the ith SOS number is received, wherein k is the total number of the SOS numbers;

and S5, when the i polls to k again, if a voice call receiving request sent by the mobile phone terminal corresponding to the kth SOS number is not received, ending the voice call request.

The communication method can also comprise the following steps:

s6, receiving a voice call request sent by a mobile phone terminal, wherein the voice call request comprises an SOS number corresponding to the mobile phone terminal;

s7, judging whether the SOS number is a preset number or not;

and S8, if so, establishing a call connection with the mobile phone terminal, otherwise, interrupting the voice call request.

The working principle of the working method provided by the second aspect of the embodiment is the same as the talking principle of the safety helmet provided by the first aspect of the embodiment, and is not described herein again.

Thus, by the foregoing explanation, the beneficial effects obtained by the present invention are:

(1) the safety helmet provided by the invention has the functions of personnel position monitoring and real-time voice intercommunication, can be used for timely positioning and timely reminding constructors and timely providing remote guidance and emergency rescue in case of emergency, and can meet the requirements of a manager on position monitoring management and safety management of workers in a construction site all day long.

(2) The invention can carry out real-time voice reminding to correctly take the helmet when a constructor does not correctly wear the helmet in a specified place, and simultaneously automatically carry out reminding record to a management side terminal.

(3) The lighting module is arranged in the invention, and can provide lighting for constructors in emergency, thereby further improving the safety protection for the constructors.

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 safety helmet with communication and positioning functions, comprising: the control module, the GSM module, the positioning module and the voice communication module are arranged on the safety helmet;

the microphone is electrically connected with the audio signal input end of the GSM module and used for transmitting the acquired employee audio signal to the GSM module so as to transmit the employee audio signal to the management party terminal through the GSM module;

2. The safety helmet with communication and positioning functions as claimed in claim 1, wherein the GSM module comprises an L610/EC200S type communication chip, a SIM chip and a SIM card, wherein the SIM card is electrically connected with the L610/EC200S type communication chip through the SIM chip, and the microphone is electrically connected with an audio signal input end of the L610/EC200S type communication chip to transmit a collected employee audio signal to the L610/EC200S type communication chip;

3. The safety helmet with communication and positioning functions of claim 2, wherein the GSM module further comprises a signal transmission control circuit, a signal reception control circuit, and a chip wake-up circuit;

4. The safety helmet with communication and positioning functions of claim 3, wherein the signal transmitting control circuit, the signal receiving control circuit and the chip wake-up circuit each comprise a first triode, a first resistor and a first capacitor;

5. The helmet with communication and positioning functions of claim 1, wherein a decapping detection module is disposed on the helmet, wherein the decapping detection module comprises an LTR-553ALS-WA type short-distance detection chip and an SC7a20 type acceleration sensor chip, and the LTR-553ALS-WA type short-distance detection chip and the SC7a20 type acceleration sensor chip are electrically connected to the control module, respectively.

6. The helmet with communication and positioning functions of claim 1, further comprising a lighting module disposed thereon, wherein the lighting module comprises: the lighting control circuit, the lighting power supply circuit and the first light emitting diode;

7. The safety helmet with communication and positioning functions of claim 6, wherein the lighting control circuit comprises a lighting control key, and the lighting power supply circuit comprises a TMI5101 type DC-DC voltage reduction chip;

8. The safety helmet with communication and positioning functions as claimed in claim 1, further comprising a power module, wherein the power module comprises a charging interface, a power management circuit, a rechargeable battery, a double-pole-four-throw switch, a battery level monitoring circuit, and a linear voltage stabilizing circuit;

9. The headgear with communication and location functions of claim 8, wherein the battery charge monitoring circuit comprises: a CN61CN33 type electric quantity detection chip and a second triode;

the input end of the CN61CN33 type electric quantity detection chip is electrically connected to the second contact end of the double-pole four-throw switch, the output end of the CN61CN33 type electric quantity detection chip is electrically connected to one end of a fifth resistor and one end of a sixth resistor respectively, wherein the other end of the sixth resistor is electrically connected to the base of the second triode, and the collector of the second triode is electrically connected to the gate of the field-effect transistor;

10. The safety helmet with communication and positioning functions as claimed in claim 1, wherein the control module adopts an STM32G070CB control chip and peripheral circuits thereof, the positioning module adopts a UB7020 type Beidou positioning chip, and the power amplifier adopts a PA4871 type power amplification chip.