CN212817475U - Infrared infusion reminder - Google Patents
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- CN212817475U CN212817475U CN202020523173.2U CN202020523173U CN212817475U CN 212817475 U CN212817475 U CN 212817475U CN 202020523173 U CN202020523173 U CN 202020523173U CN 212817475 U CN212817475 U CN 212817475U
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Abstract
The utility model relates to an infrared infusion reminder, which belongs to the medical technical field. The infrared alarm device comprises an infrared signal acquisition module, a signal processing module, an alarm module and a power supply, wherein the input end of the signal processing module is electrically connected with the output end of the infrared signal acquisition module, and the output end of the signal processing module is electrically connected with the input end of the alarm module. Has the advantages of simple structure, high sensitivity, reliability, safety, wide adaptability, low cost, practicality, convenience and the like.
Description
Technical Field
The utility model relates to an infrared infusion reminder, belonging to the technical field of medical appliances.
Background
At present, when infusion treatment is carried out in a medical institution, the infusion process needs to be monitored manually, and when liquid infusion is finished, an infusion channel is closed in time to prevent air from entering blood vessels and avoid causing injury to human bodies. Due to the fact that infusion time is long (generally, one-time infusion time is more than one hour), the number of patients and the like, staff of medical institutions cannot monitor all patients at the same time, so that the task is often handed to the patients or family members of the patients to execute, and accidents often occur because most of the patients and the family members are not professional and fatigue is easily caused due to long-time monitoring.
In response to this problem, some infusion monitoring and alarming technologies have been studied and used. The common technology adopts a capacitance induction type, and has the defects of poor adaptability and poor reliability; the visible light system or weighing system is adopted to monitor the liquid medicine state in the liquid conveying pipe, and the problems of poor reliability, large influence by environmental change, high cost and the like exist. For example, the accuracy and reliability of visible light detection may be affected by the color of different liquid medicines, and weighing monitoring may result in increased costs, etc. Therefore, there is a need to propose a more reliable and cost-effective method and apparatus.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is not enough to prior art reliability not high, adaptability is poor, with high costs, provides an infrared infusion reminiscences, utilizes the liquid medicine state in the infrared non-visible light detection transfer line and accurately judges in addition, carries out the reputation suggestion then, prevents the occurence of failure.
In order to solve the technical problem, the utility model provides an infrared infusion reminder, which comprises an infrared signal acquisition module 1, a signal processing module 2, an alarm module 3 and a power supply Vcc, wherein the input end of the signal processing module 2 is electrically connected with the output end of the infrared signal acquisition module 1, and the output end is electrically connected with the input end of the alarm module 3; the infrared signal acquisition module 1 consists of an infrared emitting diode D1, an infrared receiving diode D2, a first resistor R1, a third resistor R3, a first capacitor C1 and a third capacitor C3, wherein the cathode of the infrared emitting diode D1 is connected with the output end of the single chip microcomputer through the first resistor R1 and the first capacitor C1, the anode of the infrared receiving diode D2 is connected with the input end of the single chip microcomputer through the third resistor R3 and the third capacitor C3, and the infrared emitting diode D1 and the infrared receiving diode D2 are respectively connected with the first resistor R1, the first capacitor C1, the third resistor R3 and the third capacitor C3 in a mixed mode and then connected with a power supply Vcc; the signal processing module 2 adopts a single chip microcomputer, the alarm module 3 adopts a buzzer BZ, and an infrared emitting diode D1 and an infrared receiving diode D2 of the infrared signal acquisition module 1 are arranged on two sides of an infusion pipeline on the upper part of the dropping funnel of the infusion apparatus in a clamping manner.
A second resistor R2 and a second capacitor C2 are further connected between the negative electrode of the infrared emitting diode D1 of the signal acquisition module 1 and the output end of the single chip microcomputer, and a second resistor R2 and a second capacitor C2 are further connected between the infrared emitting diode D1 and a power supply Vcc in a mixed mode. Namely, the cathode of the infrared emitting diode D1 is connected with the output end of the single chip microcomputer through a first resistor R1, a first capacitor C1, a second resistor R2 and a second capacitor C2, and the infrared emitting diode D1 and the infrared receiving diode D2 are connected with the power supply Vcc after being connected with the first resistor R1, the first capacitor C1, the second resistor R2, the second capacitor C2, the third resistor R3 and the third capacitor C3 in a mixed manner.
And the two ends of the buzzer BZ of the alarm module 3 are also connected with a light-emitting diode D3 and a fourth resistor R4 in parallel, so that the alarm module can give out sound alarm and give out light alarm at the same time, and the alarm effect is enhanced.
The single chip microcomputer is an 8-bit single chip microcomputer with AD conversion (such as STC15W, STC12C5A60S2 and the like), the infrared emitting diode D1 and the infrared receiving diode D2 are correspondingly and respectively arranged on the inner sides of two clamping arms of the infusion tube clamp 4, the two clamping arms are clamped on an upper infusion tube of the infusion set dropping funnel through the infusion tube clamp 4, and the inner sides of the two clamping arms of the infusion tube clamp 4 are provided with circular grooves matched with the infusion tube.
The single chip microcomputer monitors and judges the liquid medicine state in the infusion tube through the load output voltage V of the infrared receiving diode D2, detects the load output voltage value V1 of D2 when liquid medicine exists in the infusion tube, detects the load output voltage value V2 of D2 when no liquid medicine exists in the infusion tube, and when the threshold voltage Vp = [ (V1 + V2)/2 +0.7] is controlled, the single chip microcomputer judges that no liquid medicine exists in the infusion tube, drives the alarm circuit to work and alarm, and outputs an acousto-optic prompt signal.
The single chip microcomputer adopts a power-off mode/shutdown mode, continuously works for a period at intervals of 800-1000ms, each working period takes 100ms, detection is completed on the load output voltage of the infrared receiving diode D2 every 0.5ms, after 900ms, the single chip microcomputer automatically wakes up after the power-off wake-up timer is full, and enters the next monitoring cycle until the monitored voltage value is lower than the set control threshold voltage Vp.
The utility model discloses load output voltage value V1 of D2 when having the liquid medicine in the infusion pipeline, load output voltage value V2 of D2 when not having the liquid medicine in the infusion pipeline all can be preset by the system's preliminary examination before formal use, or preset before the product goes on the market. Aiming at different liquid medicines, the singlechip adaptively and automatically adjusts the duty ratio of the output PWM waveform, changes the transmitting power of the infrared emitting diode D1, changes the voltage V on the load resistor R2 of the infrared receiving diode D2, and then enables the D1 and the D2 to work in a linear region, thereby ensuring the monitoring precision and reliability.
The utility model discloses the singlechip adopts the power consumption mode/shut down the mode to practice thrift the electric energy, the live time of extension power improves the power supply guarantee ability of system's work. The single chip microcomputer and all the components are made of common commercial products, and the single chip microcomputer is provided with a power-down awakening timer. The system adopts the lithium cell power supply, has sufficient linear work area for guaranteeing infrared device, can adopt lithium cell charging protection to rise the clamp plate, both can use the android mobile phone charger to charge to the device, also can use the treasured that charges to the device power supply when necessary, improves the flexibility of using. The working voltage of the system power supply Vcc is generally 2.5-5.5V, when the voltage of the battery is lower than the rated working voltage and needs to be charged, the device can give out sound and light prompting signals.
The infrared detection transfusion state reminding method of the infrared transfusion reminder adopts an infrared signal acquisition mode, the infrared emitting diode D1 and the infrared receiving diode D2 which are clamped at the two sides of the transfusion pipeline at the upper part of the dropping funnel of the transfusion device collect the liquid medicine state voltage signals in the transfusion tube and send the signals to the singlechip for monitoring and judging, the emitting power of the infrared emitting diode D1 is adjusted through the change of the PWM waveform duty ratio output by the singlechip, the load output voltage V of the infrared receiving diode D2 is changed synchronously, then the infrared emitting diode D1 and the infrared receiving diode D2 are both in a linear working area to form a reliable working window, the load output voltage V of the infrared receiving diode D2 is monitored by the singlechip in real time, and judging whether the liquid medicine exists in the infusion tube or not according to the change of the V value, and giving an alarm by the system when the liquid medicine does not exist in the infusion tube.
When the change of a load output voltage V value of an infrared receiving diode D2 is monitored in real time and the liquid medicine existence and the liquid medicine nonexistence of an infusion tube are judged according to the change of the load output voltage V value of the infrared receiving diode D2, a control threshold voltage Vp = [ (V1 + V2)/2 + beta ] is set, wherein V1 is the load output voltage value of D2 when the liquid medicine exists in the infusion tube, V2 is the load output voltage value of D2 when the liquid medicine nonexistence exists in the infusion tube, beta is the saturation voltage drop of D2, and beta = 0.7; the system detects the load output voltage V of the infrared receiving diode D2 in real time, and when the voltage V is larger than or equal to Vp, the liquid medicine in the infusion pipeline is judged; when V is less than Vp, judging that no liquid medicine exists in the infusion pipeline, and giving an alarm by the system.
When the load output voltage V of the infrared receiving diode D2 is monitored in real time, the difference between the load output voltage value V1 of D2 when liquid medicine exists in the infusion pipeline and the load output voltage value V2 of D2 when no liquid medicine exists in the infusion pipeline is controlled, so that the maximum difference Vmax of V2-V1 is not (Vcc-0.7) multiplied by 40%, wherein Vcc is the system power supply voltage.
When monitoring and judging the liquid medicine state voltage signal in the infusion tube, the intermittent mode is adopted, one period is continuously monitored at intervals of 800-1000ms, each monitoring period is continuously carried out for 100ms, and the detection and comparison judgment are completed once every 0.5 ms.
The utility model discloses a theory of operation is: by means of infrared emitting and infrared receiving tubes clamped on two sides of an infusion pipeline on the upper portion of a dropping funnel of an infusion apparatus, a reliable working window is formed by utilizing linear working areas of an infrared emitting diode and an infrared receiving diode, and liquid medicine state voltage signals in an infusion tube are collected and sent to a signal processing system for monitoring and judging. The positive pole of infrared transmitting tube and the negative pole of infrared receiving tube are connected in power Vcc, and the filter that infrared emitting diode D1's negative pole passes through R1, C1 and constitutes is connected with the PWM output of singlechip, and load R2 and be connected with the input of singlechip are connected to infrared receiving diode D2's positive pole, constitute infrared detection signal acquisition module. When the duty ratio of the PWM waveform outputted from the computer is changed, the emitting power of the ir emitting diode D1 is changed, so that the load output voltage V of the ir receiving diode D2 is also changed. By adjusting the duty ratio of the PWM, both D1 and D2 can be operated in the linear region.
Through a large amount of experiments, when liquid exists in the holding clamp infusion pipeline and no liquid exists in the holding clamp infusion pipeline, the maximum difference value of the load output voltage of D2 in the linear region is determined as follows: vmax = (V1-V2), where V1 is the voltage across the D2 load when liquid is in the line and V2 is the voltage across the D2 load when no liquid is in the line.
Meanwhile, the control threshold voltage may be determined as: vp = (V1 + V2)/2 +0.7, where Vp is the threshold voltage, and 0.7 is the saturation voltage drop of D2, taking the median of V1 and V2.
Through trial and error, Vmax was about (Vcc-0.7). times.40%.
When V is larger than Vp, the liquid medicine in the pipeline can be judged; when V is less than Vp, it can be judged that no liquid medicine is in the pipeline.
The utility model discloses can be through the change of singlechip output PWM waveform duty cycle, adjust infrared emitting diode D1's transmitted power, make infrared receiving diode D2's load output voltage V change in step, make D1, D2 all be in linear work area and form reliable work window then to the transfusion system to different colours, the liquid of different colours and the change of ambient light and temperature have all very strong adaptability. When the system starts working, the system can automatically adjust to adapt to the working environment without manual intervention, and can normally work as long as the test clamp is clamped and the power supply is switched on; if the working environment is changed during detection (such as the liquid with different colors is replaced), the system can be adaptively adjusted only by turning off the power supply and then turning on the power supply again, so that the system is in a normal working state. If the clamping method is incorrect in the using process, a buzzer is caused to alarm and remind, the clamping can be correct again after the machine is turned off, and the machine can be used after the machine is turned on again.
The utility model discloses an infrared emitting diode and infrared receiving diode install with the principle of "penetrating directly, low coverage, airtight": the working surfaces of the infrared emitting diode and the infrared receiving diode are oppositely arranged on the same straight line, the distance between the working surfaces of the infrared emitting diode and the infrared receiving diode is only the diameter of the infusion catheter, and the rest parts are all in a light-tight state except the contact parts of the working surfaces of the infrared emitting diode and the infrared receiving diode and the infusion catheter, so that the infrared emitting diode can work in a linear region, has higher sensitivity, and can reduce the influence of environmental light and different liquid medicines on the device.
The utility model discloses simple structure, it is practical convenient, can extensively be adapted to environmental change such as various transfusion system, liquid medicine and temperature, light, have advantages such as reliable operation safety, sensitivity height, low cost, still can be used to the detection of liquid object state in other transparent pipelines.
Drawings
Fig. 1 is the schematic diagram of the output characteristic curve of the infrared receiving diode (the output voltage of the infrared receiving diode changes along with the output PWM duty ratio of the single chip microcomputer).
Fig. 2 is a schematic circuit diagram of the present invention.
Fig. 3 is a schematic view of the infusion tube clip of the present invention.
In the figure, 1-an infrared signal acquisition module, 2-a signal processing module, 3-an alarm module, 4-an infusion tube clip, a Vcc-power supply, D1-an infrared emitting diode, D2-an infrared receiving diode, D3-a light emitting diode, C1-a first capacitor, C2-a second capacitor, C3-a third capacitor, R1-a first resistor, R2-a second resistor, R3-a third resistor, R4-a fourth resistor, and a BZ-buzzer.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided in conjunction with the accompanying drawings, and the technology or products not mentioned in the embodiments are all conventional technologies or conventional products available through purchase.
Example 1: as shown in fig. 1-3, the infrared infusion reminder is composed of an infrared signal acquisition module 1, a signal processing module 2, an alarm module 3 and a power supply Vcc, wherein the input end of the signal processing module 2 is electrically connected with the output end of the infrared signal acquisition module 1, and the output end is electrically connected with the input end of the alarm module 3; the infrared signal acquisition module 1 consists of an infrared emitting diode D1, an infrared receiving diode D2, a first resistor R1, a first capacitor C1, a second resistor R2, a second capacitor C2, a third resistor R3 and a third capacitor C3, wherein the cathode of the infrared emitting diode D1 is connected with the output end of the single-chip microcomputer IC through a first resistor R1, a first capacitor C1, a second resistor R2 and a second capacitor C2, the anode of the infrared receiving diode D2 is connected with the input end of the single-chip microcomputer IC through a third resistor R3 and a third capacitor C3, and the infrared emitting diode D1 and the infrared receiving diode D2 are connected with a first resistor R1, a first capacitor C1, a second resistor R2, a second capacitor C2, a third resistor R3 and a third capacitor C3 in a mixed mode and then connected with a power supply Vcc; the signal processing module 2 adopts a singlechip; the alarm module 3 adopts a buzzer BZ, and two ends of the buzzer BZ are connected with a light-emitting diode D3 and a fourth resistor R4 in parallel; the infrared emitting diode D1 and the infrared receiving diode D2 of the infrared signal acquisition module 1 are clamped on two sides of an infusion pipeline on the upper part of the dropping funnel of the infusion apparatus.
The single chip microcomputer adopts an STC15W 8-bit single chip microcomputer with AD conversion, an infrared emitting diode D1 and an infrared receiving diode D2 are correspondingly and respectively arranged at the inner sides of two clamping arms of the infusion tube clamp 4, the infusion tube clamp 4 clamps the infusion tube on the upper part of the dropping funnel of the infusion apparatus, and the inner sides of the two clamping arms of the infusion tube clamp 4 are provided with circular grooves matched with the infusion tube. The single chip microcomputer monitors and judges the liquid medicine state in the infusion tube through the load output voltage V of the infrared receiving diode D2, detects the load output voltage value V1 of D2 when liquid medicine exists in the infusion tube, detects the load output voltage value V2 of D2 when no liquid medicine exists in the infusion tube, and when the threshold voltage Vp = [ (V1 + V2)/2 +0.7] is controlled, the single chip microcomputer judges that no liquid medicine exists in the infusion tube, drives the alarm circuit to work and alarm, and outputs an acousto-optic prompt signal. The single chip microcomputer adopts a power-off mode/shutdown mode, continuously works for a period every 900ms, the time of each working period is 100ms, the load output voltage of the infrared receiving diode D2 is detected once every 0.5ms, after 900ms, the single chip microcomputer automatically wakes up after the power-off wake-up timer is full to enter the next monitoring cycle until the monitored voltage value is lower than the set control threshold voltage Vp, so that the electric energy is saved, the service time of a power supply is prolonged, and the power supply guarantee capability of the system work is improved.
The system is by 3V lithium cell power supply to adopt 134N3P lithium cell charging protection board 5V liter clamp plate, both can use the android mobile phone charger to charge to the device, also can use the treasured that charges to the device power supply when necessary, improve the flexibility of using. When the voltage of the battery is lower than the rated working voltage and needs to be charged, the device can also send out an audible and visual prompt signal.
The infrared detection transfusion state reminding method of the infrared transfusion reminder adopts an infrared signal acquisition mode, the infrared emitting diode D1 and the infrared receiving diode D2 which are clamped at the two sides of the transfusion pipeline at the upper part of the dropping funnel of the transfusion device collect the liquid medicine state voltage signals in the transfusion tube and send the signals to the singlechip for monitoring and judging, the emitting power of the infrared emitting diode D1 is adjusted through the change of the PWM waveform duty ratio output by the singlechip, the load output voltage V of the infrared receiving diode D2 is changed synchronously, then the infrared emitting diode D1 and the infrared receiving diode D2 are both in a linear working area to form a reliable working window, the load output voltage V of the infrared receiving diode D2 is monitored by the singlechip in real time, and judging whether the liquid medicine exists in the infusion tube or not according to the change of the V value, and giving an alarm by the system when the liquid medicine does not exist in the infusion tube.
When the change of a load output voltage V value of an infrared receiving diode D2 is monitored in real time and the liquid medicine existence and the liquid medicine nonexistence of an infusion tube are judged according to the change of the load output voltage V value of the infrared receiving diode D2, a control threshold voltage Vp = [ (V1 + V2)/2 + beta ] is set, wherein V1 is the load output voltage value of D2 when the liquid medicine exists in the infusion tube, V2 is the load output voltage value of D2 when the liquid medicine nonexistence exists in the infusion tube, beta is the saturation voltage drop of D2, and beta = 0.7; the system detects the load output voltage V of the infrared receiving diode D2 in real time, and when the voltage V is larger than or equal to Vp, the liquid medicine in the infusion pipeline is judged; when V is less than Vp, judging that no liquid medicine exists in the infusion pipeline, and giving an alarm by the system.
When the load output voltage V of the infrared receiving diode D2 is monitored in real time, the difference between the load output voltage value V1 of D2 when liquid medicine exists in the infusion pipeline and the load output voltage value V2 of D2 when no liquid medicine exists in the infusion pipeline is controlled, so that the maximum difference Vmax of V2-V1 is not (Vcc-0.7) multiplied by 40%, wherein Vcc is the system power supply voltage. When monitoring and judging the liquid medicine state voltage signal in the infusion tube, the intermittent mode is adopted, one period is continuously monitored at intervals of 900ms, each monitoring period is continuously carried out for 100ms, and detection and comparison judgment are completed every 0.5 ms.
Example 2: as shown in fig. 1-3, the configuration of the infrared infusion reminder and the infrared detection infusion state reminding method are the same as those in embodiment 1, one period is continuously monitored at intervals of 800ms, but the signal acquisition module 1 is not provided with the second resistor R2 and the second capacitor C2, the single chip microcomputer IC adopts an 8-bit single chip microcomputer with STC12C5a60S2 and AD conversion, and the system is powered by a 2.5V lithium battery.
Example 3: as shown in fig. 1 to 3, the configuration of the infrared infusion reminder and the infrared detection infusion state reminding method are the same as those in example 1, one period is continuously monitored at intervals of 1000ms, but the system is not provided with a light emitting diode D3 and a fourth resistor R4 (no light prompt is given in case of alarm), the single chip microcomputer IC adopts an 8-bit single chip microcomputer with STC12C5a60S2 and AD conversion, and the system is powered by a 5.5V lithium battery.
The technical contents of the present invention have been described above with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the contents, and within the knowledge scope possessed by the ordinary skilled in the art, various changes can be made to the technical contents of the present invention without departing from the spirit of the present invention, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (6)
1. An infrared infusion reminder is characterized in that: the system comprises an infrared signal acquisition module (1), a signal processing module (2), an alarm module (3) and a power supply (Vcc), wherein the input end of the signal processing module (2) is electrically connected with the output end of the infrared signal acquisition module (1), and the output end of the signal processing module is electrically connected with the input end of the alarm module (3); the infrared signal acquisition module (1) is composed of an infrared emitting diode (D1), an infrared receiving diode (D2), a first resistor (R1), a third resistor (R3), a first capacitor (C1) and a third capacitor (C3), the cathode of the infrared emitting diode (D1) is connected with the output end of the single chip microcomputer through the first resistor (R1) and the first capacitor (C1), the anode of the infrared receiving diode (D2) is connected with the input end of the single chip microcomputer through the third resistor (R3) and the third capacitor (C3), and the infrared emitting diode (D1) and the infrared receiving diode (D2) are connected with the first resistor (R1), the first capacitor (C1), the third resistor (R3) and the third capacitor (C3) in a mixed mode and then connected with a power supply (Vcc); the signal processing module (2) adopts a single chip microcomputer, the alarm module (3) adopts a Buzzer (BZ), and an infrared emitting diode (D1) and an infrared receiving diode (D2) of the infrared signal acquisition module (1) are clamped on two sides of an infusion pipeline on the upper part of the drip chamber of the infusion apparatus.
2. The infrared infusion reminder of claim 1, characterized in that: a second resistor (R2) and a second capacitor (C2) are further connected between the negative electrode of the infrared emitting diode (D1) of the signal acquisition module (1) and the output end of the single chip microcomputer, and a second resistor (R2) and a second capacitor (C2) are further connected between the infrared emitting diode (D1) and the power supply (Vcc) in a mixed mode.
3. The infrared infusion reminder of claim 1, characterized in that: and both ends of a Buzzer (BZ) of the alarm module (3) are also connected with a light-emitting diode (D3) and a fourth resistor (R4) in parallel.
4. The infrared infusion reminder according to claim 1 or 2, characterized in that: the single chip microcomputer is an 8-bit single chip microcomputer with AD conversion, the infrared emitting diode (D1) and the infrared receiving diode (D2) are correspondingly and respectively arranged on the inner sides of the two clamping arms of the infusion tube clamp (4), the two clamping arms are clamped on an infusion tube path on the upper portion of the dropping funnel of the infusion apparatus through the infusion tube clamp (4), and the inner sides of the two clamping arms of the infusion tube clamp (4) are provided with circular grooves matched with the infusion tube.
5. The infrared infusion reminder according to claim 1 or 2, characterized in that: the single chip microcomputer monitors and judges the liquid medicine state in the infusion tube through the load output voltage V of the infrared receiving diode (D2), detects the load output voltage value V1 of the infrared receiving diode (D2) when liquid medicine exists in the infusion tube, detects the load output voltage value V2 of the infrared receiving diode (D2) when no liquid medicine exists in the infusion tube, and when the threshold voltage Vp = [ (V1 + V2)/2 +0.7] is controlled, the single chip microcomputer judges that no liquid medicine exists in the infusion tube, drives the alarm circuit to work and alarm, and outputs an acousto-optic prompt signal.
6. The infrared infusion reminder according to claim 1 or 2, characterized in that: the single chip microcomputer adopts a power-off mode/shutdown mode, continuously works for a period every 900ms, each working period takes 100ms, detection on load output voltage of an infrared receiving diode (D2) is completed every 0.5ms, after 900ms, the single chip microcomputer automatically wakes up after a power-off wake-up timer counts to enter the next monitoring cycle until the monitored voltage value is lower than a set control threshold voltage Vp.
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Effective date of registration: 20230921 Address after: No. 16 Pufa Road, Economic Development Zone, Kunming Area, China (Yunnan) Pilot Free Trade Zone, Kunming City, Yunnan Province, 650217 Patentee after: Kunming Economic and Technological Development Zone Intellectual Property Development Research Institute Address before: No. 603, unit 2, building 2, science and technology building, No. 50, Huancheng East Road, Panlong District, Kunming City, Yunnan Province, 650051 Patentee before: Chen Qi |
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