First-aid heat preservation device for riverside falling into water

Abstract

The invention relates to the technical field of life jackets, and discloses a riverside drowning first-aid heat preservation device which comprises a life jacket body and further comprises an inner container arranged in the life jacket body, a containing bag arranged on the front surface and a carbon dioxide gas cylinder arranged in the containing bag. The control assembly is arranged in the inner container and comprises a waterproof shell arranged on the front surface of the inner container, a controller module is arranged on one side of the inner wall of the waterproof shell, and a sensor and comparator module, a heating control module, an alarm module and an inflation control module are arranged in the waterproof shell; the sensor and comparator module is connected with the controller module, and the controller module is connected with the heating control module, the alarm module and the inflation control module. The control assembly is arranged, the heating function, the alarming function and the inflation function are integrated through modular circuit design, the reliability and rescue efficiency of the device are improved through control algorithms of all circuit modules, and therefore people falling into water can be quickly rescued, and meanwhile the safety of the people falling into water is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of life jackets, and specifically to an emergency first-aid heat preservation device for river bank drowning. Background Art

[0002] A life jacket, also known as a life vest, is a life-saving garment designed similar to a vest, made of nylon fabric or neoprene, buoyancy materials or inflatable materials, reflective materials, etc. Its general service life is 5 - 7 years. It is one of the life-saving devices on ships and airplanes. Generally, it is in the form of a vest, made of foam plastic or cork, etc. Wearing it provides sufficient buoyancy to keep the head of the drowning person above the water surface.

[0003] Currently, when performing water surface operations, to improve safety, staff will wear life jackets. However, some of the existing life jackets use passive buoyancy materials such as polyurethane foam, which can provide a certain amount of buoyancy to the staff when they fall into the water. But after the staff falls into the water, their body temperature will quickly drop, which may lead to hypothermia. At the same time, after falling into the water, they need to be continuously searched by rescue personnel, resulting in low rescue efficiency and poor timeliness. Also, some inflatable life jackets are prone to misactivation due to rain or splashing water, affecting normal use. Summary of the Invention

[0004] The purpose of the present invention is to provide an emergency first-aid heat preservation device for river bank drowning to solve the problems that some life jackets may cause rapid loss of body temperature of the drowning person, reducing their safety, and at the same time having poor rescue efficiency and timeliness.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An emergency first-aid heat preservation device for river bank drowning, including a life jacket body, and further including: An inner liner disposed inside, a placement pocket disposed on the front surface, and a carbon dioxide gas cylinder disposed inside the placement pocket; A control component disposed inside. The control component includes a waterproof housing disposed on the front surface of the inner liner. On one side of the inner wall of the waterproof housing, there is a controller module. Inside the waterproof housing, there are respectively a sensor and comparator module, a heating control module, an alarm module, and an inflation control module. The sensor and comparator module is connected to the controller module, and the controller module is connected to the heating control module, the alarm module, and the inflation control module.

[0006] Preferably, a charging interface is disposed inside the waterproof housing, and a power supply is disposed inside the waterproof housing.

[0007] Preferably, an alarm is disposed on the top of the waterproof housing, a water-sensitive sensor is disposed inside the waterproof housing, and a Bluetooth module is disposed inside the waterproof housing.

[0008] Preferably, one side of the inner wall of the waterproof housing is fixedly connected with a partition board, and a loudspeaker is arranged inside the waterproof housing.

[0009] Preferably, a resistance heating block is arranged inside the inner container, an elastic connecting band is fixedly connected to the outside of the inner container, and a first magic tape is arranged on the front surface of the inner container.

[0010] Preferably, a second magic tape is arranged on the inner wall of the life jacket body, and a first connecting pipe is communicated with the top of the carbon dioxide gas cylinder.

[0011] Preferably, a solenoid valve is arranged on the outside of the first connecting pipe, and a hose is communicated with one end of the first connecting pipe far away from the carbon dioxide gas cylinder.

[0012] Preferably, a side pipe is communicated with one end of the hose far away from the first connecting pipe, and an airbag is communicated with the outside of the side pipe.

[0013] Preferably, a second connecting pipe is communicated with the outside of the airbag, and a communicating pipe is communicated with the outside of the airbag.

[0014] Preferably, a collecting pipe is communicated with one end of the communicating pipe far away from the airbag, a third connecting pipe is communicated with the outside of the collecting pipe, and an air outlet pipe is communicated with the outside of the third connecting pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By setting the sensor and comparator module, the present invention is composed of a humidity-sensitive resistor (10 kΩ), a fixed resistor (10 kΩ), an LM358 comparator and a voltage dividing circuit. The humidity-sensitive resistor detects the change of environmental humidity, forms a voltage dividing circuit with the fixed resistor to output a signal voltage (Sensor_IN+), and the LM358 comparator compares the signal voltage with a reference voltage (Sensor_IN-), outputs a low level to trigger the single-chip microcomputer interruption. It only needs a humidity-sensitive resistor, an ordinary resistor and a general comparator, and the cost of each component is relatively low. At the same time, the resistance value of the humidity-sensitive resistor changes sensitively, and the response speed of the LM358 is high, which can ensure that the falling into water event is triggered in time. At the same time, it can distinguish rainwater from falling into water through algorithms (such as detecting the rate and area of humidity change), reducing the false alarm rate; 2. The present invention is provided with a heating control module, which consists of an IRF540 MOSFET, a thermistor (10 kΩ), a PID control algorithm, and a PWM wave output. Among them, the single-chip microcomputer adjusts the PWM duty cycle output by the P2.0 pin through the PID algorithm to control the conduction time of the IRF540, driving the resistance heating block to generate heat. Moreover, the thermistor can feedback the temperature to the ADC pin (P1.2) in real time to form a closed-loop control. It can dynamically adjust the heating power through the PID algorithm to avoid local overheating or insufficient temperature. At the same time, the thermistor can monitor the temperature in real time and automatically cut off the heating when the temperature exceeds the limit; 3. The present invention is provided with an alarm module, which consists of an LM386 audio amplifier, an HC-05 Bluetooth module, an 8 Ω speaker, and a manual intervention button. After the single-chip microcomputer detects a person falling into the water, the P2.1 pin outputs a pulse signal to drive the LM386, and the speaker emits an alarm sound. At the same time, the Bluetooth module sends the falling-into-water event and GPS location information to the receiving device through the serial port (P3.1 - TXD). The user can press the button (the P1.4 pin is grounded) within 30 seconds to turn off the alarm. It can adjust the pulse frequency through programming, support multiple sound effects, and can improve the positioning accuracy by connecting an external GPS module; 4. The present invention is provided with an inflation control module, which consists of a 9013 triode, a relay, a solenoid valve, a 10 mA current detection resistor, and a 100 Ω back electromotive force absorption resistor. The P2.2 pin of the single-chip microcomputer outputs a high level to drive the triode to conduct, the relay is attracted, the solenoid valve is opened to release carbon dioxide gas, and the current detection resistor; 5. The present invention is provided with a controller module, which consists of an STC89C52 single-chip microcomputer, a 12 MHz crystal oscillator, a 10 μF reset capacitor, and a 10 kΩ pull-up resistor. Among them, the crystal oscillator provides a stable clock signal, and the reset circuit ensures reliable power-on initialization. The single-chip microcomputer overall controls the coordinated operation of the sensor, heating, alarm, and inflation modules. Its single chip can control multiple modules, reducing the complexity of the peripheral circuit. At the same time, the STC89C52 has rich development resources and supports program upgrade and expansion functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a preferred embodiment of the first-aid warming device for a person falling into the water provided by the present invention; Figure 2 is a schematic structural diagram of the inner liner; Figure 3 is a schematic structural diagram of the control component provided by the present invention; Figure 4 is a schematic structural diagram of the interior of the life jacket body provided by the present invention; Figure 5Schematic diagram of the connection structure between the carbon dioxide gas cylinder and the air outlet pipe provided by the present invention; Figure 6 Electrical connection diagram of the control component of the present invention; Figure 7 Schematic electrical connection diagram of the present invention.

[0017] In the figure: 1. Life jacket body; 2. Inner liner; 3. Placing bag; 4. Carbon dioxide gas cylinder; 5. Control component; 51. Waterproof housing; 52. Controller module; 53. Sensor and comparator module; 54. Heating control module; 55. Alarm module; 56. Inflation control module; 6. Charging interface; 7. Power supply; 8. Alarm; 9. Water-sensitive sensor; 10. Bluetooth module; 11. Partition; 12. Speaker; 13. Resistance heating block; 14. Elastic connecting band; 15. First magic tape; 16. Second magic tape; 17. First connecting pipe; 18. Solenoid valve; 19. Hose; 20. Side pipe; 21. Airbag; 22. Second connecting pipe; 23. Connecting pipe; 24. Collection pipe; 25. Third connecting pipe; 26. Air outlet pipe. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figure 1-7 As shown, the first-aid and heat preservation device for a person falling into water by the river includes a life jacket body 1, and further includes: An inner liner 2 provided inside, a placing bag 3 provided on the front surface, and a carbon dioxide gas cylinder 4 provided inside the placing bag 3; The internally arranged control component 5, the control component 5 includes a waterproof housing 51 arranged on the front surface of the inner tank 2, one side of the inner wall of the waterproof housing 51 is provided with a controller module 52, and a sensor and comparator module 53, a heating control module 54, an alarm module 55 and an inflation control module 56 are respectively arranged inside the waterproof housing 51. The sensor and comparator module 53 is connected to the controller module 52, and the controller module 52 is connected to the heating control module 54, the alarm module 55 and the inflation control module 56. By arranging the sensor and comparator module 53, it includes an LM358 comparator, a humidity-sensitive resistor and a fixed resistor, wherein the humidity-sensitive resistor is a water-sensitive sensor 9, and the humidity-sensitive resistor is used to detect the change of environmental humidity. The 10kΩ humidity-sensitive resistor and the 10kΩ fixed resistor form a voltage-dividing circuit to output a signal voltage, which is Sensor_IN+, and the reference voltage circuit, which is divided by a 5kΩ resistor, is the negative input terminal of the comparator, which is Sensor_IN-, to provide a fixed reference voltage. When the resistance value of the humidity-sensitive resistor decreases due to the increase of humidity, the Sensor_IN+ voltage is lower than Sensor_IN-, and the LM358 outputs a low level to the external interrupt pin of the single-chip microcomputer. By arranging the heating control module 54, the heating control module 54 includes an IRF540 MOSFET and an STC89C52 single-chip microcomputer. The P2.0 pin of the single-chip microcomputer outputs a PWM wave, which is driven by a 100Ω resistor to the gate of the IRF540 as a driving circuit. The 10Ω resistor simulates the heating wire. When the IRF540 is turned on, it generates heat. At the same time, the 10kΩ thermistor and the 5kΩ fixed resistor form a voltage-dividing circuit, and the voltage-dividing point is connected to the ADC pin of the single-chip microcomputer. The single-chip microcomputer samples the temperature voltage value through the ADC and adjusts the PWM duty cycle by using the PID algorithm to dynamically control the heating power. By arranging the alarm module 55, the alarm module 55 includes an LM386 audio amplifier and an HC-05 Bluetooth module 10. The audio alarm circuit is that the P2.1 pin of the single-chip microcomputer outputs a pulse signal to the IN pin of the LM386 to drive the 8Ω speaker 12 to sound. The wireless alarm circuit is that the single-chip microcomputer communicates with the HC-05 Bluetooth module 10 through the serial port to send the drowning event and GPS position information. The GPS position information needs an external module. The manual intervention circuit is that the button is connected to the P1.4 pin of the single-chip microcomputer, and pressing it within 30 seconds can turn off the alarm. By arranging the inflation control module 56, the inflation control module 56 includes a 9013 triode and a relay. Its driving circuit is that the P2.2 pin of the single-chip microcomputer outputs a high level, which is driven by a 1kΩ resistor to turn on the 9013, and the relay coil is energized. The solenoid valve 18 control circuit is that the normally open contact of the relay controls the solenoid valve 18 to realize the inflation of the airbag 21. Its state detection circuit is that a 10mA current detection resistor is connected to the ADC pin of the single-chip microcomputer to monitor the inflation current. Its back electromotive force protection is that a 100Ω resistor is connected in parallel with the relay coil to absorb the reverse voltage when disconnected. By arranging the power supply 7, it includes a TP4056 charging chip and an AMS1117-3.3 The voltage regulator chip, its charging circuit uses TP4056 to manage the lithium battery charging. The CHRG / STDBY pin indicates the charging status through an LED, and at the same time, a diode prevents current backflow. Its voltage regulator circuit is AMS1117, which converts the lithium battery voltage into a stable 3.3V to supply power to the single-chip microcomputer and sensors. And its output terminal is connected in parallel with a 10μF electrolytic capacitor and a 0.1μF ceramic capacitor. By setting the controller module 52, which includes an STC89C52 single-chip microcomputer, its power-on reset circuit is a 10μF capacitor and a 10kΩ resistor to ensure reliable reset. Its crystal oscillator circuit is a 12MHz crystal oscillator and a 30pF capacitor to provide a stable clock signal.

[0020] Reference Figure 2 and Figure 3 As shown, a charging interface 6 is provided inside the waterproof housing 51. By setting the charging interface 6, it is convenient for the staff to carry out the charging operation on the power supply 7, so that the power of the power supply 7 can be replenished. By setting the charging interface 6, it is convenient for the staff to charge the power supply, enabling the device to operate for a long time. A power supply 7 is provided inside the waterproof housing 51. By setting the power supply 7, under the action of the power supply 7, the circuits and various electronic components inside the device can be kept working properly.

[0021] An alarm 8 is provided on the top of the waterproof housing 51. By setting the alarm 8, under the action of the alarm 8, through the audio alarm circuit, the alarm sound is played. A water-sensitive sensor 9 is provided inside the waterproof housing 51. By setting the water-sensitive sensor 9, under the action of the water-sensitive sensor 9, the change of environmental humidity can be detected. A Bluetooth module 10 is provided inside the waterproof housing 51. By setting the Bluetooth module 10, under the action of the audio alarm circuit, the single-chip microcomputer can communicate with the HC-05 Bluetooth module 10 through the serial port P3.1 - TXD.

[0022] A partition 11 is fixedly connected to one side of the inner wall of the waterproof housing 51. By setting the partition 11, under the action of the partition 11, the space inside the waterproof housing 51 can be divided. A speaker 12 is provided inside the waterproof housing 51. By setting the speaker 12, through the audio alarm circuit, the speaker 12 makes a sound.

[0023] Reference Figure 1 and Figure 2 As shown, a resistance heating block 13 is provided inside the inner container 2. By setting the resistance heating block 13, under the action of the resistance heating block 13, the inner container 2 can be heated, and thus the user's body temperature will not continue to drop. An elastic connecting band 14 is fixedly connected to the outside of the inner container 2, and a first magic tape 15 is provided on the front surface of the inner container 2.

[0024] The inner wall of the life jacket body 1 is provided with a second magic tape 16. By providing the first magic tape 15 and the second magic tape 16, it is convenient for the user to connect the life jacket body 1 and the inner liner 2 through the first magic tape 15 and the second magic tape 16. The top of the carbon dioxide gas cylinder 4 is communicated with a first connecting pipe 17.

[0025] An electromagnetic valve 18 is arranged on the outer side of the first connecting pipe 17. By providing the electromagnetic valve 18, under the action of the electromagnetic valve 18, the first connecting pipe 17 can be controlled, and then the gas inside the carbon dioxide gas cylinder 4 can be controlled to be released. One end of the first connecting pipe 17 far away from the carbon dioxide gas cylinder 4 is communicated with a hose 19.

[0026] One end of the hose 19 far away from the first connecting pipe 17 is communicated with a side pipe 20. By providing the side pipe 20, under the action of the side pipe 20, carbon dioxide gas can enter the inside of the airbag 21 through the side pipe 20, so that the airbag 21 can expand, and thus the life jacket body 1 can expand. The side pipe 20 is communicated with the airbag 21 on the outside.

[0027] The outside of the airbag 21 is communicated with a second connecting pipe 22, and the outside of the airbag 21 is communicated with a communicating pipe 23.

[0028] One end of the communicating pipe 23 far away from the airbag 21 is communicated with a collecting pipe 24. The outside of the collecting pipe 24 is communicated with a third connecting pipe 25. The outside of the third connecting pipe 25 is communicated with an air outlet pipe 26.

[0029] Working principle: When the user is using this device and falls into the water during water surface operations, after the water-sensitive sensor 9 detects the situation, where the water-sensitive sensor 9 is a humidity-sensitive resistor that can monitor the ambient humidity change in real time. When it detects a sharp rise in humidity within a short period, the voltage signal output by the sensor voltage division circuit is lower than the set threshold, triggering the LM358 comparator to output a low-level signal to the external interrupt pin of the single-chip microcomputer. The single-chip microcomputer immediately starts the emergency response program. The single-chip microcomputer dynamically adjusts the duty cycle of the PWM wave through the PID algorithm, driving the IRF540 MOSFET to conduct, enabling the resistance heating block 13 in the inner tank to be energized and generate heat. At the same time, the thermistor monitors the heating temperature in real time and feeds it back to the ADC pin of the single-chip microcomputer to achieve closed-loop temperature control. The temperature control range is 30°C to 40°C, avoiding overheating and maintaining the user's body temperature. At the same time, the single-chip microcomputer triggers an audio alarm, which drives the speaker 12 to sound through the LM386. The Bluetooth module 10 is the HC-05 Bluetooth module 10, and then through the Bluetooth module 10, it sends the falling water event and GPS location information to nearby receiving devices. The user can press the manual intervention button to turn off the alarm within 30 seconds. If the alarm is not manually turned off, it enters the inflation process. The single-chip microcomputer opens the solenoid valve 18 through the inflation control module 56 to release the gas from the carbon dioxide cylinder 4. The gas flows through the hose 19, enabling the airbag 21 to be quickly inflated, providing buoyancy for the expansion of the life jacket body 1. The current detection circuit monitors the inflation state in real time and triggers a fault alarm when abnormal. The lithium battery is powered by the TP4056 charging chip and the AMS1117 voltage regulator chip to provide a stable 3.3V voltage. The charging interface 6 supports USB fast charging. The electrolytic capacitor and ceramic capacitor are combined for filtering to ensure the low-noise and high-efficiency operation of the circuit.

[0030] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat preservation device for emergency rescue of drowning people at the river bank, comprising a life jacket body (1), characterized in that: Also includes: An inner liner (2) disposed inside, a placement bag (3) disposed on the front surface, and a carbon dioxide gas cylinder (4) disposed inside the placement bag (3); A control component (5) is arranged inside, the control component (5) comprising a waterproof shell (51) arranged on the front surface of the inner liner (2), a controller module (52) being arranged on one side of the inner wall of the waterproof shell (51), and a sensor and comparator module (53), a heating control module (54), an alarm module (55) and an inflation control module (56) being arranged inside the waterproof shell (51), the sensor and comparator module (53) being connected to the controller module (52), and the controller module (52) being connected to the heating control module (54), the alarm module (55) and the inflation control module (56).

2. The heat preservation device for emergency rescue of drowning in a river according to claim 1, characterized in that: A charging interface (6) is provided inside the waterproof housing (51), and a power source (7) is provided inside the waterproof housing (51).

3. The heat preservation device for emergency rescue of drowning in a river according to claim 1, characterized in that: An alarm (8) is arranged on the top of the waterproof housing (51), a water-sensitive sensor (9) is arranged inside the waterproof housing (51), and a Bluetooth module (10) is arranged inside the waterproof housing (51).

4. The heat preservation device for emergency rescue of drowning in a river according to claim 1, characterized in that: A partition plate (11) is fixedly connected to one side of the inner wall of the waterproof housing (51), and a speaker (12) is arranged inside the waterproof housing (51).

5. The heat preservation device for emergency rescue of drowning in a river according to claim 1, characterized in that: A resistance heating block (13) is arranged inside the inner liner (2), an elastic connecting belt (14) is fixedly connected to the outer side of the inner liner (2), and a first Velcro (15) is arranged on the front surface of the inner liner (2).

6. The heat preservation device for emergency rescue of drowning in a river according to claim 1, characterized in that: The inner wall of the life jacket body (1) is provided with a second Velcro (16), and the top of the carbon dioxide cylinder (4) is connected to a first connecting pipe (17).

7. The heat preservation device for emergency rescue of drowning in a river according to claim 6, characterized in that: A solenoid valve (18) is provided on the outside of the first connecting pipe (17), and a hose (19) is connected to one end of the first connecting pipe (17) away from the carbon dioxide cylinder (4).

8. The heat preservation device for emergency rescue of drowning in a river according to claim 7, characterized in that: One end of the hose (19) away from the first connecting tube (17) is connected to a side tube (20), and the outside of the side tube (20) is connected to an air bag (21).

9. The heat preservation device for emergency rescue of drowning in a river according to claim 8, characterized in that: The outer side of the airbag (21) is connected to a second connecting pipe (22), and the outer side of the airbag (21) is connected to a connecting pipe (23).

10. The heat preservation device for emergency rescue of drowning in a river according to claim 9, characterized in that: One end of the connecting pipe (23) away from the airbag (21) is connected to a collecting pipe (24), the outer side of the collecting pipe (24) is connected to a third connecting pipe (25), and the outer side of the third connecting pipe (25) is connected to an air outlet pipe (26).

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