CN215500142U - Portable medical equipment - Google Patents
Portable medical equipment Download PDFInfo
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- CN215500142U CN215500142U CN202120858850.0U CN202120858850U CN215500142U CN 215500142 U CN215500142 U CN 215500142U CN 202120858850 U CN202120858850 U CN 202120858850U CN 215500142 U CN215500142 U CN 215500142U
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Abstract
The utility model discloses a portable medical device. The portable medical device includes: a battery for outputting a discharge voltage; a heat dissipating component; a battery for outputting a discharge voltage; the electric control assembly comprises an electric control board, and a first temperature detection circuit and a heat dissipation driving circuit which are arranged on the electric control board; the first temperature detection circuit is used for detecting the temperature of the electric control assembly and outputting a first temperature detection signal; the heat dissipation driving circuit is arranged on the electric control board, a power end of the heat dissipation driving circuit is connected with the battery, and a first output end of the heat dissipation driving circuit is connected with a power end of the heat dissipation assembly; the heat dissipation driving circuit is used for converting the discharge voltage output by the battery into a driving power supply corresponding to the size of the first temperature detection signal after corresponding power supply conversion according to the received first temperature detection signal so as to drive the heat dissipation assembly to work with the power corresponding to the first temperature detection signal and dissipate heat of the electric control assembly. The portable medical equipment can improve the endurance time of the battery.
Description
Technical Field
The utility model relates to the field of portable medical equipment, in particular to portable medical equipment.
Background
At present, when a medical worker goes out for emergency, the medical worker usually carries various portable medical devices (such as a portable expectoration machine, a portable cardiopulmonary resuscitation machine, a portable X-ray machine and the like) so as to be suitable for different emergency occasions. The existing portable medical equipment is usually started to radiate heat of each functional component in the equipment after being started.
The power of the conventional heat dissipation assembly is usually set to a higher constant power, so that the heat dissipation assembly can always maintain higher heat dissipation performance. However, the constant high power of the heat dissipation assembly may cause the power of the battery in the portable medical device to be consumed too quickly, resulting in a reduced battery life.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide portable medical equipment and aims to solve the problem that battery endurance time is reduced due to a constant high-power radiating assembly.
To achieve the above object, the present invention provides a portable medical device. The portable medical device includes:
a heat dissipating component;
a battery for outputting a discharge voltage; and the number of the first and second groups,
the electronic control assembly comprises an electronic control board, and a first temperature detection circuit and a heat dissipation driving circuit which are arranged on the electronic control board, wherein the output end of the first temperature detection circuit is connected with a first temperature feedback end of the heat dissipation driving circuit; the first temperature detection circuit is used for detecting the temperature of the electric control assembly and outputting a first temperature detection signal;
the heat dissipation driving circuit is arranged on the electric control board, a power end of the heat dissipation driving circuit is connected with the battery, and a first output end of the heat dissipation driving circuit is connected with a power end of the heat dissipation assembly; the heat dissipation driving circuit is used for converting the discharge voltage output by the battery into a driving power supply corresponding to the first temperature detection signal after corresponding power supply conversion according to the received first temperature detection signal so as to drive the heat dissipation assembly to work with the power corresponding to the first temperature detection signal, and therefore the electric control assembly is subjected to heat dissipation.
Optionally, the heat dissipation assembly comprises:
the first fan is arranged corresponding to the electric control assembly, and the power end of the first fan is connected with the first output end of the heat dissipation driving circuit; the first fan is used for working according to a driving power supply output by the heat dissipation driving circuit and rotating at a rotating speed corresponding to the size of the driving power supply so as to dissipate heat of the electric control assembly.
Optionally, the heat dissipation assembly comprises:
a second fan;
the portable medical device further comprises: the shell comprises a shell body and a cover plate, and the shell body and the cover plate are enclosed to form an accommodating cavity; the heat dissipation assembly, the battery, the electric control assembly and the second fan are all accommodated in the accommodating cavity;
the high-power component is accommodated in the accommodating cavity;
the output end of the second temperature detection circuit is connected with the second temperature feedback end of the heat dissipation driving circuit; the second temperature detection circuit is used for detecting the air temperature of the accommodating cavity in which the high-power component is positioned and outputting a second temperature detection signal;
and the second output end of the heat dissipation driving circuit is connected with the power supply end of the second fan, and the heat dissipation driving circuit is further used for converting the discharge voltage output by the battery into a driving power supply corresponding to the second temperature detection signal after corresponding power supply conversion according to the received second temperature detection signal so as to drive the second fan to rotate at a rotating speed corresponding to the second temperature detection signal, so that the high-power component is subjected to heat dissipation.
Optionally, the second temperature detection circuit includes: the circuit comprises a thermistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor and a first triode; the first ends of the thermistor and the third resistor are respectively connected with a first power supply voltage, and the second end of the thermistor is connected with the base electrode of the first triode through the first resistor; the base electrode of the first triode is grounded through the first capacitor and the second resistor respectively, the emitting electrode of the first triode is grounded, and the collecting electrode of the first triode is connected with the second end of the third resistor through the fourth resistor; and the common end of the third resistor and the fourth resistor is the output end of the first temperature detection circuit.
Optionally, the heat dissipation driving circuit includes:
the power supply end of the speed regulation control circuit is connected with the power supply end of the heat dissipation driving circuit, the first output end of the speed regulation control circuit is connected with the first output end of the heat dissipation driving circuit, and the second output end of the speed regulation control circuit is connected with the second output end of the heat dissipation driving circuit; the speed regulation control circuit is used for converting the discharge voltage output by the battery through a power supply and then respectively outputting the discharge voltage to the first fan and the second fan;
the first feedback end of the main controller is connected with the first temperature feedback end of the heat dissipation driving circuit, the second feedback end of the main controller is connected with the second temperature feedback end of the heat dissipation driving circuit, the first control end of the main controller is connected with the first controlled end of the speed regulation control circuit, and the second control end of the main controller is connected with the second controlled end of the speed regulation control circuit; the main controller is used for outputting a first speed regulation control signal to the speed regulation control circuit according to the received first temperature detection signal so as to control the speed regulation control circuit to regulate the rotating speed of the first fan; and outputting a second speed regulation control signal to the speed regulation control circuit according to the received second temperature detection signal so as to control the speed regulation control to control the rotating speed of the second fan.
Optionally, the speed control circuit includes:
the input end of the switch driving circuit is a power supply end of the speed regulation control circuit; the first controlled end of the speed regulation control circuit is the first controlled end of the speed regulation control circuit, and the second controlled end of the speed regulation control circuit is the second controlled end of the speed regulation control circuit; the switch driving circuit is used for converting the received first speed regulating control signal into a first switch driving signal and then outputting the first switch driving signal through a first output end of the switch driving circuit; converting the received second speed regulation control signal into a second switch driving signal and then outputting the second switch driving signal by a second output end of the second switch driving signal;
the input end of the switch circuit is connected with the power supply end of the speed regulation control circuit, and the first controlled end of the switch circuit is connected with the first output end of the switch driving circuit; the second controlled end of the switch driving circuit is connected with the second output end of the switch driving circuit; the first output end of the fan is connected with the power supply end of the first fan; the second output end of the fan is connected with the power supply end of the second fan; the switch circuit is used for controlling the rotating speed of the first fan according to the received first switch driving signal; and controlling the rotation speed of the second fan according to the received second switch driving signal.
Optionally, the switch driving circuit includes: the circuit comprises a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a first inductor, a second triode and a third triode; the first end of the tenth resistor is connected with the first controlled end of the switch driving circuit, and the first end of the tenth resistor is connected with the base electrode of the third triode; an emitting electrode of the third triode is grounded, the eleventh resistor is arranged between a base electrode of the third triode and the emitting electrode of the third triode in series, and a collector electrode of the third triode is connected with the first output end of the switch driving circuit through the twelfth resistor; a collector of the third triode is also connected with the first end of the first inductor through the thirteenth resistor, and the second end of the first inductor is the input end of the switch driving circuit; the first end of the seventh resistor is a second controlled end of the switch driving circuit, and the first end of the seventh resistor is connected with the base electrode of the second triode; the emitter of the second triode is grounded; the eighth resistor is connected in series between the base electrode of the second triode and the emitter electrode of the second triode, and the collector electrode of the second triode is connected with the second output end of the switch driving circuit through the ninth resistor; and the collector of the second triode is also connected with the first end of the first inductor through the fourteenth resistor.
Optionally, the switching circuit comprises: the MOS transistor comprises a first MOS transistor and a second MOS transistor; the controlled end of the first MOS tube is a first controlled end of the switch circuit, and the output end of the first MOS tube is a first output end of the switch circuit; the input ends of the first MOS tube and the second MOS tube are respectively connected with the first end of the first inductor; the controlled end of the second MOS tube is the second controlled end of the switch circuit, and the output end of the second MOS tube is the second output end of the switch circuit.
Optionally, an air inlet and an air outlet are formed in the side wall of the housing, the air inlet and the air outlet are communicated to form a heat dissipation air duct, and the first fan is disposed in the heat dissipation air duct.
Optionally, the first temperature detection circuit includes: the temperature sensor, the second capacitor, the third capacitor, the fifth resistor and the sixth resistor; the grounding end of the temperature sensor is grounded, the power end of the temperature sensor is used for accessing power supply voltage, the power end of the temperature sensor is grounded through the second capacitor, and the output end of the temperature sensor is connected with the first end of the fifth resistor; the second end of the fifth resistor is connected with the output end of the first temperature detection circuit, the first end of the fifth resistor is connected with a power supply voltage through the sixth resistor, and the second end of the fifth resistor is grounded through the third capacitor.
The utility model discloses a heat dissipation device, which comprises a heat dissipation component, a battery, an electric control component, a first temperature detection circuit and a heat dissipation driving circuit, wherein the first temperature detection circuit is used for detecting the temperature of the electric control component and outputting a first temperature detection signal to the heat dissipation driving circuit, so that the heat dissipation driving circuit can convert a discharge voltage output by the battery into a driving power supply corresponding to the size of the first temperature detection signal after corresponding power supply conversion according to the received first temperature detection signal so as to drive the heat dissipation component to dissipate heat of the electric control component with the power corresponding to the first temperature detection signal. According to the utility model, the working power of the heat dissipation assembly can be matched with the temperature of the electric control assembly, so that the heat dissipation assembly does not need to be kept under high power in real time, the problem of reduction of battery endurance time caused by constant high-speed heat dissipation is solved, the electric quantity of the battery is saved, the endurance time of the battery in portable medical equipment is prolonged, the noise generated by the heat dissipation assembly can be reduced, and the emergency diagnosis and treatment precision of medical personnel can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram of a circuit module of an embodiment of the portable medical device of the present invention;
FIG. 2 is a schematic diagram of a circuit module of another embodiment of the portable medical device of the present invention;
FIG. 3 is a schematic diagram of a circuit module of another embodiment of the portable medical device of the present invention;
FIG. 4 is a schematic circuit diagram of an embodiment of a second temperature detection circuit of the portable medical device according to the present invention;
FIG. 5 is a schematic circuit diagram of an embodiment of a first temperature detection circuit of the portable medical device according to the present invention;
fig. 6 is a schematic circuit diagram of an embodiment of a speed control circuit in the portable medical device according to the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) | |
| 10 | |
322 | Main controller | |
| 11 | |
33 | Second |
|
| 12 | |
40 | High- |
|
| 20 | Battery with a battery cell | RTC | |
|
| 30 | Electric control assembly | R1～R14 | First to |
|
| 31 | First temperature detection circuit | C1～C5 | First to |
|
| 32 | Heat dissipation driving circuit | Q1～Q3 | First to |
|
| 321 | Speed regulation control circuit | D1～D2 | First to |
|
| 3211 | Switch driving circuit | | Temperature sensor | |
| 3212 | Switching circuit | U2 | Field effect transistor |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a portable medical device.
At present, when portable medical equipment such as a portable expectoration machine, a portable cardiopulmonary resuscitation machine or a portable X-ray machine executes high-power functions such as sputum suction, cardiopulmonary compression or ray emission, each internal functional component generates a large amount of heat. The prior art prevents the working performance of the portable medical equipment from being affected by high temperature by arranging corresponding heat dissipation components (such as fans, liquid cooling devices or refrigeration sheets) in the portable medical equipment. However, in the prior art, the heat dissipation assembly is set to be started up automatically, and the power of the heat dissipation assembly is set to be constant high power, so that the heat dissipation assembly can keep a high heat dissipation effect in the whole process. However, the arrangement mode can cause the electric quantity of the battery to be consumed too fast, thereby causing the battery endurance to be reduced, and being not beneficial to the long-time use in emergency occasions. In the emergency situation, medical staff often need to use a stethoscope and other medical instruments for diagnosis and treatment by using sound signals, and the constant high-power heat dissipation assembly, such as a fan, often brings great use noise when in use, and can influence the medical staff to determine the focus, the cause of disease and the like of a patient through auscultation.
To solve the above problem, referring to fig. 1 to 6, in an embodiment of the present invention, the portable medical apparatus includes:
a heat dissipating component 10;
a battery 20 for outputting a discharge voltage; and the number of the first and second groups,
the electronic control assembly 30 comprises an electronic control board, and a first temperature detection circuit 31 and a heat dissipation driving circuit 32 which are arranged on the electronic control board, wherein the output end of the first temperature detection circuit 31 is connected with a first temperature feedback end of the heat dissipation driving circuit 32; the first temperature detection circuit 31 is configured to detect a temperature of the electronic control component 30 and output a first temperature detection signal;
the heat dissipation driving circuit 32 is arranged on the electric control board, a power end of the heat dissipation driving circuit is connected with the battery 20, and a first output end of the heat dissipation driving circuit is connected with a power end of the heat dissipation assembly 10; the heat dissipation driving circuit 32 is configured to convert a discharge voltage output by the battery 20 into a driving power source corresponding to the first temperature detection signal after corresponding power source conversion according to the received first temperature detection signal, so as to drive the heat dissipation assembly 10 to operate with a power corresponding to the first temperature detection signal, so as to dissipate heat from the electronic control assembly 30.
In this embodiment, the heat dissipation assembly 10 may be implemented by one or more of a fan, a liquid cooling device, and a semiconductor cooling plate. The heat dissipation assembly 10 may be disposed corresponding to the target assembly, and may generate a heat dissipation action corresponding to the size of the driving power according to the received driving power, thereby implementing heat dissipation of the target assembly. For example: the fan can generate heat dissipation airflow with the wind speed corresponding to the size of the driving power supply so as to carry out air cooling heat dissipation on the target assembly; the liquid cooling device can generate heat dissipation water flow with the flow rate corresponding to the size of the driving power supply so as to realize liquid cooling heat dissipation. It can be understood that, when the current is constant, the greater the voltage of the received driving power of the heat dissipation assembly 10 is, the greater the power thereof is, and the better the heat dissipation effect thereof is; therefore, the heat dissipation effect can be controlled by controlling the voltage of the driving power supply of the heat dissipation assembly 10.
The battery 20 may be a lead acid battery 20 or a bank of lithium batteries 20. When discharging, the battery 20 converts the stored chemical energy into a discharge voltage and outputs the discharge voltage to each functional circuit in the portable medical device, so as to provide a driving power supply for each functional circuit to normally operate.
The electronic control board in the electronic control assembly 30 may be a printed circuit board. A plurality of functional circuits for realizing corresponding functions of the portable medical equipment can be welded on the electric control board; the functional circuits can be electrically connected through wiring, and can be constructed by one or more of a switch tube, a transformer, a control chip, a resistor and other discrete devices.
These devices can generate a large amount of heat in the working process, and if the heat dissipation is not timely, the too high temperature of the electric control board can affect the working performance and the service life of the equipment, for example: the excessive temperature can accelerate the melting process of the welding flux at the welding point of each device, so that the overall welding quality of the electric control board is reduced, the switching devices such as the triode and the like lose the switching function, the corresponding functional circuit cannot work normally, and the risk of burning the power devices such as the control chip and the like can be caused. Therefore, heat dissipation processing of the electronic control component 30 is required.
The first temperature detection circuit 31 is configured to detect a device temperature of the electronic control assembly 30 in real time, for example, a power switch tube, an inductor, a capacitor, and other high-power devices in the electronic control assembly, and output a corresponding first temperature detection signal.
The heat dissipation driving circuit 32 can convert the first temperature detection signal into a digital signal and then analyze the digital signal when receiving the first temperature detection signal, so as to obtain a first temperature value corresponding to the first temperature detection signal, that is, a current temperature value of the electronic control assembly 30. The heat dissipation driving circuit 32 may further determine the power required by the electronic control component 30 and a driving power source matched with the power according to the acquired first temperature value, and may raise/lower the dc discharge voltage output by the battery 20 to a corresponding voltage value according to the determination result; or, the voltage is inverted to an ac voltage having a corresponding frequency, phase, and conduction angle and then output to the power supply terminal of the heat dissipation assembly 10, so as to provide the heat dissipation assembly 10 with a driving power corresponding to the first temperature detection signal. The matching relationship between the power required by the heat dissipation assembly 10 and the driving power source matched with the power can be obtained through a plurality of preliminary experiments. Therefore, when the heat dissipation assembly 10 works, the heat dissipation assembly 30 can be dissipated by the power corresponding to the first temperature detection signal, so that the heat dissipation requirement of the electric control assembly 30 is met.
In another embodiment, the microprocessor of the heat dissipation driving circuit 32 has a plurality of temperature intervals, and a driving power voltage is corresponding to each temperature interval. The heat dissipation driving circuit 32 can match the temperature value corresponding to the first temperature detection signal with each temperature interval through the microprocessor when acquiring the first temperature detection signal, so as to detect the temperature interval in which the temperature value is located. The heat dissipation driving circuit 32 can drive the power conversion circuit to output a voltage with a corresponding magnitude according to a specific temperature range of the temperature value, so as to output a corresponding driving power to the heat dissipation assembly 10, so that the heat dissipation assembly provides heat dissipation capabilities with different degrees. For example, the microprocessor may be pre-stored with three temperature ranges, i.e., a high temperature range, a medium temperature range and a low temperature range, and when the first temperature value is 80 ℃, the microprocessor may determine that the temperature is in the high temperature range, so as to provide the heat dissipation assembly 10 with a driving power supply with a high voltage value; when the first temperature value is 60 ℃, the temperature can be determined to be in a middle temperature range, so as to provide a driving power supply with a higher voltage value for the heat dissipation assembly 10; when the first temperature value is 40 ℃, it may be determined that the temperature is in the low temperature range, so as to provide a driving power source with a lower voltage value for the heat dissipation assembly 10, thereby preventing the electric quantity from being wasted.
In practical applications, portable medical devices do not always perform powerful functions, but also perform, for example: the electric quantity inquiry function and the low-power function such as the set pressing times, when using such functions, the heat dissipation effect of the heat dissipation assembly 10 actually far exceeds the heat productivity of the electronic control assembly 30 at this time. The portable medical equipment of the technology of the utility model can provide larger heat dissipation capacity by driving the heat dissipation component 10 through the heat dissipation driving circuit 32 when executing a high-power function, so as to meet the requirement of high-temperature heat dissipation of the electric control component 30. When the portable medical device performs a low-power function, the heat dissipation driving circuit 32 can drive the heat dissipation assembly 10 to provide a smaller heat dissipation capability, so as to meet the lower heat dissipation requirement of the electronic control assembly 30. Therefore, the heat dissipation assembly 10 is prevented from working at constant high power for a long time, energy is saved, environment is protected, the use duration of the portable medical equipment in emergency occasions is prolonged, and the problem that the endurance time of the battery 20 is reduced due to constant high-speed heat dissipation is solved. And because the heat dissipation assembly 10 does not need to be maintained under high power in the whole process, the use noise generated during the operation of the heat dissipation assembly is reduced, and the problem of diagnosis errors caused by noise interference in auscultation or other environments needing quieter operation can be prevented.
Referring to fig. 1 to 6, in an embodiment of the present invention, the heat dissipation assembly 10 includes:
the first fan 11 is arranged corresponding to the electronic control component 30, and a power supply end of the first fan is connected with a first output end of the heat dissipation driving circuit 32; the first fan 11 is configured to operate according to the driving power output by the heat dissipation driving circuit 32, and rotate at a rotation speed corresponding to the size of the driving power, so as to dissipate heat from the electronic control assembly 30.
The first fan 11 may include a plurality of blades and a motor. The first fan 11 can control the motor therein to drive the blades to rotate to accelerate the air flow near the electronic control assembly 30 according to the received power supply voltage, so that the heat of the electronic control assembly 30 can be dissipated through the air more quickly, thereby realizing air-cooling heat dissipation. It is understood that, depending on the type of the motor in the first fan 11, the magnitude of the dc voltage received by the first fan 11 may be controlled; or controlling the frequency, the phase and the conduction angle of the received alternating voltage to realize the speed regulation control of the first fan. According to the utility model, the first fan 11 is adopted to cool and radiate the electric control assembly 30, so that the electric control assembly 30 can be dedusted while the temperature is reduced; and by matching the real-time rotating speed of the first fan 11 with the temperature of the electronic control assembly 30, the noise of the first fan 11 during operation is favorably reduced.
Referring to fig. 1 to 6, in an embodiment of the present invention, the heat dissipation assembly 10 includes:
a second fan 12;
the portable medical device further comprises: the shell comprises a shell body and a cover plate, and the shell body and the cover plate are enclosed to form an accommodating cavity; the heat dissipation assembly 10, the battery 20, the electronic control assembly 30 and the second fan 12 are accommodated in the accommodating cavity;
a high power component 40 accommodated in the accommodating cavity;
the second temperature detection circuit 33 is arranged on the electric control board, and the output end of the second temperature detection circuit 33 is connected with the second temperature feedback end of the heat dissipation driving circuit 32; the second temperature detection circuit 33 is configured to detect an air temperature of the accommodating cavity in which the high-power component 40 is located, and output a second temperature detection signal;
a second output end of the heat dissipation driving circuit 32 is connected to a power end of the second fan 12, and the heat dissipation driving circuit 32 is further configured to convert a discharge voltage output by the battery 20 into a driving power corresponding to a magnitude of the second temperature detection signal after corresponding power conversion according to the received second temperature detection signal, so as to drive the second fan 12 to rotate at a rotation speed corresponding to the second temperature detection signal, so as to dissipate heat of the high-power component 40.
In this embodiment, the interior of the housing may be a hollow structure; the shell is provided with an opening which is communicated with the interior of the shell and the size of which is matched with that of the cover plate; the opening is used for installing the functional components such as the heat dissipation component 10, the battery 20, the electronic control component 30 and the second fan 12 in the portable medical equipment, so that the functional components can be installed in the shell through the opening. The cover plate is used for covering the opening after the functional components are installed, so that a sealed containing cavity is formed between the cover plate and the shell, and the functional components are sealed inside the containing cavity.
It will be appreciated that the portable medical device may be provided with powerful components corresponding to its own functions, such as: the portable heart-lung pressing machine can be internally provided with a motor component so as to realize the pressing function by driving the pressing part to move along a straight line through the motor component; a vacuum pump assembly can be arranged in the portable expectoration machine to realize the sputum suction function. The high power component 40 emits a large amount of heat when operating, and if the environment temperature of the high power component 40 is high, the heat of the high power component 40 is hard to dissipate, so that the temperature of the high power component falls into a vicious circle with higher and higher temperature. In the present embodiment, by providing the second fan 12, the heat generated by the high power component 40 can be dissipated more quickly through the air, so as to dissipate the heat of the high power component 40. The first fan 11 can be referred to for the specific implementation of the second fan 12, which is not described herein.
The second temperature detection circuit 33 can detect the air temperature in the accommodating cavity where the high-power component 40 is located, and output a corresponding second temperature detection signal to the heat dissipation driving circuit 32. The heat dissipation driving circuit 32 may determine a second temperature value corresponding to the second temperature detection signal, that is, an air temperature value of the accommodating cavity where the high-power component 40 is located, and may output a driving power supply with a corresponding voltage value to the power supply end of the second fan 12 according to the second temperature value, so as to provide the driving power supply corresponding to the second temperature detection signal for the second fan 12. In this way, the second fan 12 can rotate at a speed that meets the heat dissipation requirements of the high power component 40. According to the technical scheme, the second fan 12 is arranged to cool and radiate the high-power component 40, so that the ambient air temperature of the high-power component 40 can be greatly reduced, and the working performance of the high-power component 40 can be guaranteed; and to facilitate reducing noise during operation of the second fan 12.
Referring to fig. 1 to 6, in an embodiment of the present invention, the second temperature detecting circuit 33 includes: the circuit comprises a thermistor RTC, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first capacitor C1 and a first triode Q1; the first ends of the thermistor RTC and the third resistor R3 are respectively connected to a power supply voltage, and the second end of the thermistor RTC is connected to the base of the first triode Q1 through the first resistor R1; the base of the first triode Q1 is further grounded through the first capacitor C1 and the second resistor R2, respectively, the emitter of the first triode Q1 is grounded, and the collector of the first triode Q1 is connected to the second end of the third resistor R3 through the fourth resistor R4; the common terminal of the third resistor R3 and the fourth resistor R4 is the output terminal of the first temperature detection circuit 31.
In this embodiment, the thermistor RTC may be a negative temperature coefficient resistor, and its resistance value will decrease with the temperature increase; in other embodiments, the thermistor RTC may also be implemented by a positive temperature coefficient resistor. As the ambient temperature increases, the supply current flowing through the thermistor RTC and the first resistor R1 increases, and the supply current is filtered by the first capacitor C1, converted into a turn-on voltage by the second resistor R2, and applied to the base of the first transistor Q1 to trigger the turn-on of the first transistor Q1. The first transistor Q1 can connect the power voltage connected to the third resistor R3 to ground when being turned on, so that the first temperature detection circuit 31 can output a low-level first temperature detection signal; wherein, the power voltage can be 3.3V. When the ambient temperature is low, the current limiting effect of the thermistor RTC and the first resistor R1 makes the first transistor Q1 in an off state, and at this time, the first temperature detection circuit 31 outputs a first temperature detection signal with a high level. When the ambient temperature is between a high temperature and a low temperature, the level value of the first temperature detection signal may be between a high level and a low level according to the turn-on degree of the first transistor Q1. Thus, the heat dissipation driving circuit 32 can determine the temperature of the air in the accommodating chamber by recognizing the level value of the first temperature detection signal.
Referring to fig. 1 to 6, in an embodiment of the present invention, the heat dissipation driving circuit 32 includes:
a speed-regulating control circuit 321, a power end of which is connected to the power end of the heat dissipation driving circuit 32, a first output end of which is connected to the first output end of the heat dissipation driving circuit 32, and a second output end of which is connected to the second output end of the heat dissipation driving circuit 32; the speed control circuit 321 is configured to convert the discharge voltage output by the battery 20 into a power supply and output the converted discharge voltage to the first fan 11 and the second fan 12 respectively;
a first feedback end of the main controller 322 is connected to the first temperature feedback end of the heat dissipation driving circuit 32, a second feedback end of the main controller is connected to the second temperature feedback end of the heat dissipation driving circuit 32, a first control end of the main controller is connected to the first controlled end of the speed regulation control circuit 321, and a second control end of the main controller is connected to the second controlled end of the speed regulation control circuit 321; the main controller 322 is configured to control the speed control circuit 321 to operate according to the received first temperature detection signal and the second temperature detection signal, so as to respectively drive the first fan 11 and the second fan 12 to rotate at corresponding rotational speeds.
The speed-regulating control circuit 321 can control the switching frequency and the conduction logic of each switching device according to the received switching control signal to realize power conversion such as voltage reduction, rectification or inversion; alternatively, the boosted power supply conversion can be realized by using the principle that the voltage between two ends of the capacitor cannot change suddenly. The speed-adjusting control circuit 321 can perform corresponding power conversion on the discharge voltage of the battery 20 connected to the power end of the heat dissipation driving circuit 32, and then output two driving power supplies with corresponding voltage values to the first fan 11 and the second fan 12, so as to drive the two fans to work.
The main controller 322 can be realized by microprocessing such as MCU, DSP or FPGA; alternatively, a dedicated control chip may also be employed. The main controller 322 may determine the target rotation speeds of the first fan 11 and the second fan 12 according to the received first temperature detection signal and the second temperature detection signal, and may output two corresponding speed control signals from the enable terminals (i.e. EN1 and EN2 in fig. 6) thereof according to the determination result, for example: the PWM signals with corresponding duty ratios are sent to the speed control circuit 321, so that the speed control circuit 321 can adjust the rotation speeds of the first fan 11 and the second fan 12 to the target rotation speed according to the received speed control signal. For example, the main controller 322 outputs two PWM signals with a duty ratio of 80% to the speed control circuit 321, so that the two PWM signals can drive the first fan 11 and the second fan 12 to rotate at high speed. In the embodiment shown in FIG. 3, the host controller 322 is an STM32F407ZGT6 control chip. According to the technical scheme of the utility model, the heat dissipation driving circuit 32 is constructed by adopting the speed regulation control circuit 321 and the main controller 322, and the speed regulation control can be respectively carried out on the first fan 11 and the second fan 12 according to the first temperature detection signal and the second temperature detection signal, so that the endurance time of the battery 20 can be further improved, and the integral use noise of the equipment can be reduced.
Referring to fig. 1 to 6, in an embodiment of the present invention, the speed control circuit 321 includes:
a switch driving circuit 3211, the input terminal of which is the power supply terminal of the speed regulation control circuit 321; the first controlled end of the speed control circuit 321 is the first controlled end of the speed control circuit 321, and the second controlled end of the speed control circuit 321 is the second controlled end of the speed control circuit 321; the switch driving circuit 3211 is configured to convert the received first speed control signal into a first switch driving signal and output the first switch driving signal through a first output end of the first switch driving signal; converting the received second speed regulation control signal into a second switch driving signal and then outputting the second switch driving signal by a second output end of the second switch driving signal;
a switch circuit 3212, an input terminal of which is connected to a power supply terminal of the speed regulation control circuit 321, and a first controlled terminal of which is connected to a first output terminal of the switch driving circuit 3211; a second controlled end of the switch driving circuit is connected with a second output end of the switch driving circuit 3211; a first output end of the fan is connected with a power supply end of the first fan 11; the second output end of the fan is connected with the power supply end of the second fan 12; the switch circuit 3212 is configured to control a rotation speed of the first fan 11 according to a received first switch driving signal; and controlling the rotation speed of the second fan 12 according to the received second switch driving signal.
The switch circuit 3212 may control the on/off state of each switching device according to the received first and second switch driving signals, and may output the discharging voltage connected to the power terminal of the speed-regulating control circuit 321 to the first fan 11 or the second fan 12 when controlling the corresponding switching device to be turned on; and when the corresponding switching device is controlled to be turned off, the power supply of the first fan 11 or the second fan 12 can be cut off, so that the speed regulation control of the first fan 11 or the second fan 12 is realized by controlling the power supply of the first fan 11 or the second fan 12.
However, in practical applications, since the operating voltage of the main controller 322 is usually 3.3V or 5V, the driving voltage of the switching device, such as a MOS transistor, an IGBT, etc., may be 9V or higher, and thus the main controller may not be able to directly drive the switching device. Therefore, the technical scheme of the application is provided with a switch driving circuit 3211; the switch driving circuit 3211 may control an on/off state of each switching device according to the received first speed control signal and the second speed control preference, and may drive the switch circuit 3212 to operate by using a discharge voltage of an accessed high voltage value when the corresponding switching device is turned on/off. In the embodiment shown in fig. 6, a voltage regulating circuit is further disposed between the battery 20 and the power end of the speed-regulating control circuit 321, so as to regulate the discharging voltage of the battery to 12V and then output the voltage to the power end of the speed-regulating control circuit 321. According to the technical scheme of the utility model, the switch driving circuit 3211 is used for driving the switch circuit 3212, so that the requirement on the driving capability of the main controller 322 can be reduced, and the cost can be reduced.
Referring to fig. 1 to 6, in an embodiment of the present invention, the switch driving circuit 3211 includes: a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a first inductor, a second triode Q2 and a third triode Q3; a first end of the tenth resistor R10 is connected to a first controlled end of the switch driving circuit 3211, and a first end of the tenth resistor R10 is connected to a base of the third transistor Q3; an emitter of the third triode Q3 is grounded, the eleventh resistor R11 is connected in series between a base of the third triode Q3 and the emitter thereof, and a collector of the third triode Q3 is connected with the first output terminal of the switch driving circuit 3211 through the twelfth resistor R12; the collector of the third transistor Q3 is further connected to the first end of the first inductor via the thirteenth resistor R13, and the second end of the first inductor is the input end of the switch driving circuit 3211; a first end of the seventh resistor R7 is connected to the second controlled end of the switch driving circuit 3211, and a first end of the seventh resistor R7 is connected to the base of the second transistor Q2; the emitter of the second triode Q2 is grounded; the eighth resistor R8 is connected in series between the base of the second triode Q2 and the emitter thereof, and the collector of the second triode Q2 is connected to the second output terminal of the switch driving circuit 3211 through the ninth resistor R9; the collector of the second transistor Q2 is also connected to the first end of the first inductor via the fourteenth resistor R14.
In this embodiment, the second transistor Q2 and the third transistor Q3 may be implemented by NPN transistors or PNP transistors, and both are explained herein as NPN transistors. The second triode Q2 and the third triode Q3 can be turned on when receiving the speed regulation control signal corresponding to the high level, and can enable the switch driving circuit 3211 to output the first/second switch driving signals of the low level respectively when being turned on; and can also be cut off when receiving the speed control signal corresponding to the low level, and can make the switch driving circuit 3211 output the first/second switch driving signals of the high level respectively when cutting off. So set up, can change the speed governing control signal that the driving capability is not enough into the switch drive signal that the driving capability is stronger to realize the drive control to switching circuit 3212.
Referring to fig. 1 to 6, in an embodiment of the present invention, the switch circuit 3212 includes: the MOS transistor comprises a first MOS transistor and a second MOS transistor; the controlled end of the first MOS transistor is a first controlled end of the switch circuit 3212, and the output end of the first MOS transistor is a first output end of the switch circuit 3212; the input ends of the first MOS tube and the second MOS tube are respectively connected with the first end of the first inductor; the controlled end of the second MOS transistor is a second controlled end of the switch circuit 3212, and the output end of the second MOS transistor is a second output end of the switch circuit 3212.
The first MOS transistor and the second MOS transistor may be NMOS transistors or PMOS transistors, and both are explained herein as PMOS transistors. The first MOS tube and the second MOS tube can be conducted when receiving a switch driving signal corresponding to a low level, and can respectively output voltages accessed by input ends of the first MOS tube and the second MOS tube to power supply ends of corresponding fans when being conducted; and the switch is cut off when receiving a switch driving signal corresponding to a high level, and the power supply for the corresponding fan can be stopped when the switch driving signal is cut off. In this way, the main controller 322 can control the proportional relationship between the high and low levels in the first and second speed control signals, specifically, can control the duty ratio of the PWM signal, to respectively implement the speed control of the first fan 11 and the second fan 12.
In the embodiment shown in fig. 6, the first MOS transistor and the second MOS transistor can be implemented by using an IRF7328PBF fet U2. A fourth capacitor C4 and a first diode D1 are further disposed between the first output terminal of the switch circuit 3212 and the first fan 11, and a fifth capacitor C5 and a second diode D2 are further disposed between the second output terminal of the switch circuit 3212 and the second fan 12; the fourth capacitor C4 and the fifth capacitor C5 are filter capacitors, and the first diode D1 and the second diode D2 are rectifier diodes. By the arrangement, the occupied area of the switch circuit 3212 on the electric control board can be reduced, and the optimization of the wiring design on the electric control board is facilitated.
Referring to fig. 1 to 6, in an embodiment of the present invention, an air inlet and an air outlet are formed in a side wall of the housing, the air inlet and the air outlet are communicated to form a heat dissipation air duct, and the first fan 11 is disposed in the heat dissipation air duct.
The accommodating cavity in the shell can be respectively communicated with the outside through the air inlet and the air outlet. When first fan 11 sets up on the air intake, the direction of rotation of first fan 11 sets up to the air supply in toward the holding chamber to accelerate the speed that the outside air got into the holding chamber, extrude the higher air of temperature in the holding chamber from the air outlet, thereby realize the heat dissipation to each functional unit in the holding chamber. When the first fan 11 is disposed on the air outlet, the rotation direction of the first fan 11 is set to extract air from the accommodating cavity, so that air with lower outside temperature can enter the accommodating cavity under the driving of air pressure difference, and heat dissipation of each functional component in the accommodating cavity is realized.
Referring to fig. 1 to 6, in an embodiment of the present invention, the first temperature detecting circuit 31 includes: the temperature sensor U1, the second capacitor C2, the third capacitor C3, the fifth resistor R5 and the sixth resistor R6; the ground terminal of the temperature sensor U1 is grounded, the power terminal of the temperature sensor U1 is used for accessing a power supply voltage, the power terminal of the temperature sensor U1 is further grounded through the second capacitor C2, and the output terminal of the temperature sensor U1 is further connected with the first terminal of the fifth resistor R5; the second end of the fifth resistor R5 is connected to the output end of the first temperature detecting circuit 31, the first end of the fifth resistor R5 is connected to a power supply voltage through the sixth resistor R6, and the second end of the fifth resistor R5 is connected to the ground through the third capacitor C3.
In this embodiment, the temperature sensor U1 may be implemented by a digital temperature chip and may be disposed on the electronic control board. The power supply voltage connected to the power supply voltage input end can be filtered by the second capacitor C2 and then supplies power to the temperature sensor U1, so that the temperature sensor U1 can detect the working temperature of the power device and output a first temperature detection signal when working. The sixth resistor R6 is a pull-up resistor to pull up the voltage at the first end of the fifth resistor R5 to 3.3V when the temperature sensor U1 is not operated; the fifth resistor R5 and the third capacitor C3 form a filter, so that the first temperature detection signal is output to the output terminal of the first temperature detection circuit 31 through the filter processor, which can suppress the output fluctuation of the temperature sensor U1 to a certain extent, and is beneficial to improving the working stability of the first temperature detection circuit 31.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical solutions of the present invention that are made by using the contents of the specification and the drawings or directly/indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (10)
1. A portable medical device, characterized in that the portable medical device comprises:
a heat dissipating component;
a battery for outputting a discharge voltage; and the number of the first and second groups,
the electronic control assembly comprises an electronic control board, and a first temperature detection circuit and a heat dissipation driving circuit which are arranged on the electronic control board, wherein the output end of the first temperature detection circuit is connected with a first temperature feedback end of the heat dissipation driving circuit; the first temperature detection circuit is used for detecting the temperature of the electric control assembly and outputting a first temperature detection signal;
the heat dissipation driving circuit is arranged on the electric control board, a power end of the heat dissipation driving circuit is connected with the battery, and a first output end of the heat dissipation driving circuit is connected with a power end of the heat dissipation assembly; the heat dissipation driving circuit is used for converting the discharge voltage output by the battery into a driving power supply corresponding to the first temperature detection signal after corresponding power supply conversion according to the received first temperature detection signal so as to drive the heat dissipation assembly to work with the power corresponding to the first temperature detection signal, and therefore the electric control assembly is subjected to heat dissipation.
2. The portable medical device of claim 1, wherein the heat sink assembly comprises:
the first fan is arranged corresponding to the electric control assembly, and the power end of the first fan is connected with the first output end of the heat dissipation driving circuit; the first fan is used for working according to a driving power supply output by the heat dissipation driving circuit and rotating at a rotating speed corresponding to the size of the driving power supply so as to dissipate heat of the electric control assembly.
3. The portable medical device of claim 2, wherein the heat sink assembly comprises:
a second fan;
the portable medical device further comprises: the shell comprises a shell body and a cover plate, and the shell body and the cover plate are enclosed to form an accommodating cavity; the heat dissipation assembly, the battery, the electric control assembly and the second fan are all accommodated in the accommodating cavity;
the high-power component is accommodated in the accommodating cavity;
the output end of the second temperature detection circuit is connected with the second temperature feedback end of the heat dissipation driving circuit; the second temperature detection circuit is used for detecting the air temperature of the accommodating cavity in which the high-power component is positioned and outputting a second temperature detection signal;
and the second output end of the heat dissipation driving circuit is connected with the power supply end of the second fan, and the heat dissipation driving circuit is further used for converting the discharge voltage output by the battery into a driving power supply corresponding to the second temperature detection signal after corresponding power supply conversion according to the received second temperature detection signal so as to drive the second fan to rotate at a rotating speed corresponding to the second temperature detection signal, so that the high-power component is subjected to heat dissipation.
4. The portable medical device of claim 3, wherein the second temperature detection circuit comprises: the circuit comprises a thermistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor and a first triode; the first ends of the thermistor and the third resistor are respectively connected with a first power supply voltage, and the second end of the thermistor is connected with the base electrode of the first triode through the first resistor; the base electrode of the first triode is grounded through the first capacitor and the second resistor respectively, the emitting electrode of the first triode is grounded, and the collecting electrode of the first triode is connected with the second end of the third resistor through the fourth resistor; and the common end of the third resistor and the fourth resistor is the output end of the first temperature detection circuit.
5. The portable medical device of claim 3, wherein the heat dissipation driving circuit comprises:
the power supply end of the speed regulation control circuit is connected with the power supply end of the heat dissipation driving circuit, the first output end of the speed regulation control circuit is connected with the first output end of the heat dissipation driving circuit, and the second output end of the speed regulation control circuit is connected with the second output end of the heat dissipation driving circuit; the speed regulation control circuit is used for converting the discharge voltage output by the battery through a power supply and then respectively outputting the discharge voltage to the first fan and the second fan;
the first feedback end of the main controller is connected with the first temperature feedback end of the heat dissipation driving circuit, the second feedback end of the main controller is connected with the second temperature feedback end of the heat dissipation driving circuit, the first control end of the main controller is connected with the first controlled end of the speed regulation control circuit, and the second control end of the main controller is connected with the second controlled end of the speed regulation control circuit; the main controller is used for outputting a first speed regulation control signal to the speed regulation control circuit according to the received first temperature detection signal so as to control the speed regulation control circuit to regulate the rotating speed of the first fan; and outputting a second speed regulation control signal to the speed regulation control circuit according to the received second temperature detection signal so as to control the speed regulation control circuit to control the rotating speed of the second fan.
6. The portable medical device of claim 5, wherein the throttle control circuit comprises:
the input end of the switch driving circuit is a power supply end of the speed regulation control circuit; the first controlled end of the speed regulation control circuit is the first controlled end of the speed regulation control circuit, and the second controlled end of the speed regulation control circuit is the second controlled end of the speed regulation control circuit; the switch driving circuit is used for converting the received first speed regulating control signal into a first switch driving signal and then outputting the first switch driving signal through a first output end of the switch driving circuit; converting the received second speed regulation control signal into a second switch driving signal and then outputting the second switch driving signal by a second output end of the second switch driving signal;
the input end of the switch circuit is connected with the power supply end of the speed regulation control circuit, and the first controlled end of the switch circuit is connected with the first output end of the switch driving circuit; the second controlled end of the switch driving circuit is connected with the second output end of the switch driving circuit; the first output end of the fan is connected with the power supply end of the first fan; the second output end of the fan is connected with the power supply end of the second fan; the switch circuit is used for controlling the rotating speed of the first fan according to the received first switch driving signal; and controlling the rotation speed of the second fan according to the received second switch driving signal.
7. The portable medical device of claim 6, wherein the switch drive circuit comprises: the circuit comprises a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a first inductor, a second triode and a third triode; the first end of the tenth resistor is connected with the first controlled end of the switch driving circuit, and the first end of the tenth resistor is connected with the base electrode of the third triode; an emitting electrode of the third triode is grounded, the eleventh resistor is arranged between a base electrode of the third triode and the emitting electrode of the third triode in series, and a collector electrode of the third triode is connected with the first output end of the switch driving circuit through the twelfth resistor; a collector of the third triode is also connected with the first end of the first inductor through the thirteenth resistor, and the second end of the first inductor is the input end of the switch driving circuit; the first end of the seventh resistor is a second controlled end of the switch driving circuit, and the first end of the seventh resistor is connected with the base electrode of the second triode; the emitter of the second triode is grounded; the eighth resistor is connected in series between the base electrode of the second triode and the emitter electrode of the second triode, and the collector electrode of the second triode is connected with the second output end of the switch driving circuit through the ninth resistor; and the collector of the second triode is also connected with the first end of the first inductor through the fourteenth resistor.
8. The portable medical device of claim 7, wherein the switching circuit comprises: the MOS transistor comprises a first MOS transistor and a second MOS transistor; the controlled end of the first MOS tube is a first controlled end of the switch circuit, and the output end of the first MOS tube is a first output end of the switch circuit; the input ends of the first MOS tube and the second MOS tube are respectively connected with the first end of the first inductor; the controlled end of the second MOS tube is the second controlled end of the switch circuit, and the output end of the second MOS tube is the second output end of the switch circuit.
9. The portable medical device of claim 3, wherein the side wall of the housing defines an air inlet and an air outlet, the air inlet and the air outlet are connected to form a heat dissipation air duct, and the first fan is disposed in the heat dissipation air duct.
10. The portable medical device of any of claims 1-9, wherein the first temperature detection circuit comprises: the temperature sensor, the second capacitor, the third capacitor, the fifth resistor and the sixth resistor; the grounding end of the temperature sensor is grounded, the power end of the temperature sensor is used for accessing power supply voltage, the power end of the temperature sensor is grounded through the second capacitor, and the output end of the temperature sensor is connected with the first end of the fifth resistor; the second end of the fifth resistor is connected with the output end of the first temperature detection circuit, the first end of the fifth resistor is connected with a power supply voltage through the sixth resistor, and the second end of the fifth resistor is grounded through the third capacitor.
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|---|---|---|---|
| CN202120858850.0U CN215500142U (en) | 2021-04-25 | 2021-04-25 | Portable medical equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120858850.0U CN215500142U (en) | 2021-04-25 | 2021-04-25 | Portable medical equipment |
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| CN215500142U true CN215500142U (en) | 2022-01-11 |
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| CN202120858850.0U Active CN215500142U (en) | 2021-04-25 | 2021-04-25 | Portable medical equipment |
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Inventor after: Jing Yewei Inventor after: Zhang Xinyue Inventor after: Liang Xiaotong Inventor before: Jing Yewei Inventor before: Zhang Xinyue Inventor before: Liang Xiaotong |
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Address after: A1302, Shenzhen national engineering laboratory building, No.20, Gaoxin South 7th Road, high tech Zone community, Yuehai street, Nanshan District, Shenzhen, Guangdong 518000 Patentee after: Shenzhen Security Medical Technology Co.,Ltd. Address before: A1302, Shenzhen national engineering laboratory building, No.20, Gaoxin South 7th Road, high tech Zone community, Yuehai street, Nanshan District, Shenzhen, Guangdong 518000 Patentee before: AMBULANC (SHENZHEN) TECH. Co.,Ltd. |
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Address after: 518000, Building 1, 101, Evergrande Fashion Huigu Building, Fulong Road, Shanghenglang Community, Dalang Street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Security Medical Technology Co.,Ltd. Country or region after: China Address before: A1302, Shenzhen national engineering laboratory building, No.20, Gaoxin South 7th Road, high tech Zone community, Yuehai street, Nanshan District, Shenzhen, Guangdong 518000 Patentee before: Shenzhen Security Medical Technology Co.,Ltd. Country or region before: China |