CN113827187A - Cold damage monitoring and early warning system suitable for extremely cold environment - Google Patents
Cold damage monitoring and early warning system suitable for extremely cold environment Download PDFInfo
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Abstract
The invention discloses a cold damage monitoring and early warning system suitable for an extremely cold environment, which comprises a physiological parameter monitoring module, an external environment monitoring module and an early warning analysis module; each physiological parameter monitoring module comprises a body surface temperature monitoring patch and a wristwatch type physiological signal monitoring device, a wearable miniature meteorological monitoring device of an external environment monitoring module is connected in series into a wireless network to form the monitoring module, the body surface temperature monitoring patch, the wristwatch type physiological signal monitoring device and the wearable miniature meteorological monitoring device are connected in series through a Bluetooth network, and the wearable miniature meteorological monitoring device and a terminal panel computer are connected into the wireless network. The invention is suitable for training and operating in extremely cold environment, can evaluate the risk of cold damage in time, and guides training and protection to prevent cold damage.
Description
Technical Field
The invention relates to the field of cold damage early warning, and particularly belongs to a cold damage monitoring and early warning system suitable for an extremely cold environment.
Background
Scientific research work or extreme sports training both have needs of performing wind and snow exercises and cold-resistant training in extremely cold environments. In extremely cold environments, structural or functional disorders of human skin, cells, blood vessels, body extremities, etc. are likely to occur. These structural or functional disorders are collectively referred to as cold injury. The cold injury is divided into three stages, wherein the first stage is manifested by red and swollen skin, purple skin, pruritus in the superficial layer of the skin and the middle layer of the skin and other symptoms; the second stage is characterized in that black and white frozen spots appear on the local part of the skin, blisters appear on the surface of the skin, and the local part of the skin gradually loses the feeling; the third stage is manifested by loss of sensation or freezing of the distal extremities of the body, and freezing of the skin, subcutaneous tissue, muscles and even the distal bones of the body. Normally in time break away from extremely cold environment when the cold damage of first stage appears in the body and can resume by oneself in a period of time in room temperature, need carry out medicine and apparatus treatment when the cold damage of second stage appears in the body, if do not in time treat can appear permanent injury when the third stage appears in the body, and if obtain in time treat 90% soldier can appear the sequela, lead to can not participate in again in training under the extremely cold environment afterwards.
Disclosure of Invention
In view of the above-mentioned drawbacks in the prior art, an object of the present invention is to provide a cold damage monitoring and early warning system suitable for an extremely cold environment, which actively monitors a body physiological signal and an external extremely cold environment, analyzes and processes monitoring data, reflects a cold damage degree of a person appearing in the extremely cold environment according to an analysis result, and can observe and know the cold damage degree through a cloud server, and know the cold damage degree of the person through a terminal tablet computer and timely process the cold damage degree according to the cold damage degree, and medical staff sends cold damage early warning information to a terminal tablet computer through the cloud server to prompt an operation manager or a coach to process the person reaching the cold damage early warning value, so as to prevent the cold damage from further deteriorating. The invention is suitable for wind and snow drill and cold-resistant training in extremely cold environment, and can know the cold damage state of personnel in time and prevent the further deterioration of cold damage from bringing permanent damage.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a cold damage monitoring and early warning system suitable for extremely cold environment: the system comprises an early warning analysis module, a physiological parameter monitoring module and an external environment monitoring module;
the physiological parameter monitoring module comprises a body surface temperature monitoring patch and a wristwatch type physiological signal monitoring device; the body surface temperature monitoring patch and the wristwatch type physiological signal monitoring device both comprise a wireless Bluetooth module; the wristwatch type physiological signal monitoring device monitors the electrocardio, heart rate, pulse rate, respiratory rate and blood oxygen saturation of the human body;
the external environment monitoring module comprises a wearable miniature meteorological monitoring device; the wearable miniature meteorological monitoring device comprises a wind speed sensor, a wind direction sensor, a temperature sensor, a humidity sensor, an air pressure sensor, a motion compensator and a data base station; the data base station comprises a wireless Bluetooth module and a mobile communication module; the external environment monitoring module is accessed to a wireless network through a mobile communication module of the data base station and establishes wireless connection with the physiological parameter monitoring module through a wireless Bluetooth module;
the early warning analysis module comprises terminal equipment, a cloud server and an early warning device, wherein the terminal equipment and the cloud server are connected into a wireless network, and the early warning device is installed on the wearable miniature meteorological monitoring device;
the terminal equipment or the cloud server analyzes the wind speed, wind direction, temperature, humidity and air pressure data, body temperature, electrocardio, heart rate, pulse rate, respiratory rate and oxyhemoglobin saturation data received from the data base station, displays the analysis result, and transmits the result back to the wristwatch type physiological signal monitoring device through the data base station for display;
the terminal equipment or the cloud server compares the analysis result with the cold damage early warning value, generates an early warning signal when the analysis result exceeds the cold damage early warning value and sends the early warning signal to the wearable miniature weather monitoring device, and the wearable miniature weather monitoring device controls the early warning device to start warning.
Preferably, the body surface temperature monitoring patch, the wristwatch type physiological signal monitoring device, the wearable miniature meteorological monitoring device and the terminal equipment all comprise synchronization modules, and the synchronization time difference of the synchronization modules is less than or equal to 200 us.
Preferably, the physiological parameter monitoring module comprises three body surface temperature monitoring patches and a wristwatch type physiological signal monitoring device; the three body surface temperature monitoring pastes are used for laminating respectively in the testee right chest side, left armpit, buttock are close to backbone department.
Preferably, the external environment monitoring module comprises a plurality of wearable micro-meteorological monitoring devices, and the number of wearable micro-meteorological monitoring devices is the same as that of the physiological parameter monitoring modules.
Preferably, the mobile communication module is a 4G module.
Preferably, the terminal device is a tablet computer.
Preferably, the early warning analysis module can configure a working mode to be a local mode or a cloud mode.
Preferably, when the early warning analysis module is configured in the local mode, the data base station transmits the received data of the physiological parameter monitoring module and the wearable micro meteorological monitoring device to the terminal device through the wireless network.
Preferably, when the early warning analysis module is configured to be in a cloud mode, the data base station transmits the received physiological parameter monitoring module and the data of the wearable micro meteorological monitoring device to the cloud server through the wireless network, and the cloud server analyzes the received data and transmits an analysis result to the terminal device.
Preferably, the cloud server is configured to receive the cold damage warning value through network transmission.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the physiological parameter monitoring module and the external environment monitoring module are worn by a person, the physiological signal parameters of the body of the person and the external environment are actively monitored, the early warning analysis module is used for actively analyzing and early warning the monitoring result, and the problem of further deterioration after cold damage is prevented. The invention is suitable for wind and snow drill and cold-resistant training in extremely cold environment, and can know the cold damage state of personnel in time and prevent the further deterioration of cold damage from bringing permanent damage.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a cold damage monitoring and early warning system suitable for an extremely cold environment according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a first and a fourth wearable miniature weather-monitoring devices according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a wind speed sensor module of a four-wearable miniature weather monitoring apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a connection post and a strain gauge of a four-wearable miniature weather monitoring device according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an electric control module and a base of a four-wearable miniature weather monitoring device according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a circuit board structure of a four-wearable miniature weather monitoring device according to an embodiment of the present invention.
Detailed Description
The technical scheme of the invention is clearly described below with reference to the attached drawings, and the specific implementation manner of the invention is as follows with reference to the attached drawings:
example one
Referring to figure 1: the cold damage monitoring and early warning system applicable to the extremely cold environment comprises N physiological parameter monitoring modules, an external environment monitoring module and an early warning analysis module;
each physiological parameter monitoring module comprises three body surface temperature monitoring patches and a wristwatch type physiological signal monitoring device, wherein wireless Bluetooth modules are arranged in the three body surface temperature monitoring patches and the wristwatch type physiological signal monitoring devices, and the wristwatch type physiological signal monitoring devices can monitor the electrocardio, heart rate, pulse rate, respiratory rate and oxyhemoglobin saturation of a human body;
the system comprises an external environment monitoring module, N wearable micro meteorological monitoring devices and a data base station, wherein the N wearable micro meteorological monitoring devices are connected in a wireless network in series, each wearable micro meteorological monitoring device is provided with a wind speed sensor, a wind direction sensor, a temperature sensor, a humidity sensor, an air pressure sensor, a motion compensator and the data base station, and the data base station comprises a wireless Bluetooth module and a 4G module; in this embodiment, only the 4G module is taken as an example, and other types of mobile communication modules may be adopted;
the physiological parameter monitoring module and the external environment monitoring module are worn by working or training personnel, namely, each person wears 1 wearable micro meteorological monitoring device, a group of body surface temperature monitoring patches and a wristwatch type physiological signal monitoring device;
the physiological parameter monitoring module and the wearable micro meteorological monitoring device are in wireless connection through Bluetooth, and the wearable micro meteorological monitoring device, the cloud server and the terminal tablet computer are connected into a wireless network to establish safe and reliable wireless network connection;
the wearable miniature meteorological monitoring device also comprises a microprocessor unit, a power supply unit and a necessary storage unit, and can adopt a typical structure as shown in fig. 2, and mainly comprises a sensor module 1 and a base 2 (other components are not shown in the figure). Those skilled in the art can also select the existing wearable micro weather monitoring device or portable weather station, or under the guidance described in this embodiment, the current technology is adopted according to the load requirement, and the details are not repeated here.
The early warning analysis module comprises a terminal tablet computer, a cloud server and an early warning device, wherein the terminal tablet computer and the cloud server are connected into a wireless network, and the early warning device is carried on the wearable miniature meteorological monitoring device;
in this embodiment, only the terminal tablet computer is taken as an example, and other portable intelligent terminal devices suitable for monitoring a scene may be adopted.
The body surface temperature monitoring patch, the wristwatch type physiological signal monitoring device and the wearable micro meteorological monitoring device are connected in series through a Bluetooth network, and the N wearable micro meteorological monitoring devices and the terminal tablet computer are merged into a wireless network;
the physiological data monitored by the body surface temperature monitoring patch and the wristwatch type physiological signal monitoring device are transmitted to a wearable micro meteorological monitoring device data base station through a wireless Bluetooth module, external environment data monitored by the wearable micro meteorological monitoring device is directly received by a data base station, the data received by the data base station is transmitted to a terminal panel computer or a cloud server through a wireless network, the terminal panel computer or the cloud server analyzes the received data transmitted by the data base station in the N wearable micro meteorological monitoring devices and displays an analysis result, the data result analyzed by the terminal panel computer or the cloud server is transmitted back to the data base station through the wireless network, the data base station transmits the received analysis data back to the wristwatch type physiological signal monitoring device through the Bluetooth network for display, and if the data result analyzed by the terminal panel computer or the cloud server reaches a cold damage early warning value, the terminal tablet computer or the cloud server transmits the early warning signal to the data base station through a wireless network, the data base station transmits the early warning signal to the wearable miniature weather monitoring device, and the wearable miniature weather monitoring device controls the early warning device to start an alarm. The alert means may be vibration, sound or a combination thereof.
The body surface temperature monitoring patch, the wristwatch type physiological signal monitoring device, the wearable miniature meteorological monitoring device and the terminal tablet computer all comprise synchronization modules, and the synchronization time difference of the synchronization modules is less than or equal to 200 us.
The three body surface temperature monitoring pastes and laminates respectively in right chest side, left armpit, buttock are close to backbone department.
The early warning analysis module is divided into a local mode and a cloud mode.
And when the early warning analysis module is in a local mode, the data base station transmits the received data of the physiological parameter monitoring module and the wearable micro meteorological monitoring device to the terminal tablet computer through a wireless network.
During early warning analysis module cloud end network, the data base station transmits the physiological parameter monitoring module and wearable miniature meteorological monitoring device data received to the cloud end server through the wireless network, and the cloud end server analyzes the data received and transmits the analysis result to the terminal panel computer.
In this embodiment, the wireless network adopts a mobile communication 4G network, and a satellite communication network can also be established by matching a satellite communication module according to the requirements of a field operation environment or a training environment.
Example two
When the invention is used in a local mode, firstly, the cold damage early warning value is set by a terminal panel computer for the role of an operation team leader or team leader and a coach, then, the member in the team wears a body surface temperature monitoring patch, a wristwatch type physiological signal monitoring device and a wearable micro meteorological monitoring device, a synchronizing module in the body surface temperature monitoring patch and the wristwatch type physiological signal monitoring device worn by each team member and the wearable micro meteorological monitoring device worn by the member synchronize Bluetooth signals through a synchronizing module, the wearable micro meteorological monitoring device worn by all members in the team and the terminal panel computer held by the team leader synchronize 4G signals through the synchronizing module, the terminal panel computer starts to receive the monitoring information transmitted by a data base station in real time after the 4G signals are synchronized, and after the terminal panel computer analyzes that the cold damage value of one or more members in the team reaches the early warning value, the terminal panel computer sends out early warning signal to this member or many members, after the data base station received early warning signal among the wearable miniature meteorological monitoring device that this member or many members wore, the alarm is opened to wearable miniature meteorological monitoring device control early warning ware, when terminal panel computer analysis goes out the member cold damage value of team, the terminal panel computer is synchronous with cold damage value through the data base station among the wearable miniature meteorological monitoring device that the wireless network transmission of wireless network to the member of team wore, data base station transmits cold damage value to wrist watch formula physiological signal monitoring device through the bluetooth and shows.
EXAMPLE III
When the invention is used in the cloud mode, firstly, the cold damage early warning value is set through the cloud server, then, the body surface temperature monitoring patch, the wristwatch type physiological signal monitoring device and the wearable miniature meteorological monitoring device are worn by the members in each working team or training team, the body surface temperature monitoring patch worn by each team member, synchronous module passes through synchronous bluetooth signal with the wearable miniature meteorological monitoring device who wears among the watch formula physiological signal monitoring devices, wearable miniature meteorological monitoring device that all members wore in each team passes through wireless network with the high in the clouds server and links to each other, the high in the clouds server receives and analysis shows each team member or sportsman cold damage value, the high in the clouds server transmits each team member cold damage value to team leader or captain, coach on the handheld terminal panel computer of uniform colour, the terminal panel computer transmits early warning information and cold damage information to each member in this team with local mode.
Example four
As shown in fig. 2 to 6, this embodiment provides a structure of a miniature meteorological monitoring device, including a wind speed sensor module 1, an electronic control module 12 and a base 2, where the wind speed sensor module 1 includes an airflow plate 4, a connection column 3, a strain gauge 6 and a temperature and humidity sensor 5, the electronic control module 12 includes a circuit board 1201 and a rechargeable battery 1202, the base 2 includes a protective shell 10, a silicone sleeve 11 and a connection base 13, the strain gauge 6 is installed in the connection column 3, the strain gauge 6 is connected to the circuit board 1201 through a wire, the connection column 3 is connected to the airflow plate 4 and the protective shell 10, the temperature and humidity sensor 5 is embedded in the airflow plate 4, the circuit board 1201 and the rechargeable battery 1202 are installed in the protective shell 10, the rechargeable battery 1202 is located below the circuit board 1201, and the circuit board 1201 has a controller 13, an AD converter 14, a motion compensator 15, an analog-to-digital conversion module 16, and a base 2, The device comprises a micro signal transmission module 17 and a data transmission module 18, wherein the controller 13 is located in the middle of the circuit board 1201, the AD converter 14, the motion compensator 15, the analog-digital conversion module 16, the micro signal transmission module 17 and the data transmission module 18 are connected around the controller 13 through a printed circuit on the circuit board 1201, the silica gel sleeve 11 is sleeved outside the protective shell 10, and the connection base 13 is connected with the protective shell 10.
In an alternative embodiment, the top of the air flow plate 4 is an arch-shaped shell, and the lower part of the air flow plate 4 is a flat shell.
In an alternative embodiment, the adapter column 3 comprises a flexible support 7 and a rigid structure 8, the rigid structure 8 being snap-fitted inside the flexible support 7.
The number of the connecting columns 3 is 3-8, wherein the monitoring effect is optimal when the number of the connecting columns 3 is 3, 4 and 8
In an alternative embodiment, the rigid structure 8 and the flexible support 7 are fastened to form a through hole 9, and the strain gauge 6 is assembled in the through hole 9.
In an optional embodiment, the data transmission module includes a bluetooth module and a 4G module.
In an alternative embodiment, the engagement base 13 has two wearing holes 15 and a threaded engagement hole 14, and the two wearing holes 15 are symmetrical in diameter along the threaded engagement hole 14.
In an alternative embodiment, the motion compensator compensates as follows: the motion compensator 1 monitors the three-axis acceleration YiThe wind speed detected by the wind speed sensor module 15 for the first time is X1The Nth (N > 1) time monitored by the wind speed sensor module 15 is XnDelta T is the time difference between the first monitored wind speed and the Nth monitored wind speed, and the movement speed W is YiΔ T, current true wind speed Z ═ Xn±W。
The miniature meteorological monitoring device that this embodiment provided is when monitoring the weather, because the structure of 4 top arch shell of air-flow plate and lower part flat shell, the pulling force that produces the rising when making the air flow through wind speed sensor module 1, the pulling force that rises draws links up post 3 and makes linking post 3 take place micro-deformation, strain gage 6 monitors in linking post 3 and links up the deformation of 3 stereoplasm structural component 8 of post and flexible support 7, the data transmission of 6 monitoring of strain gage is to circuit board 1201 in the electronic control module 12 on, each part converts the data of 6 monitoring of strain gage into wind speed data through computational analysis on the circuit board 1201. A temperature and humidity sensor 5 embedded in the airflow plate 4 collects temperature and humidity of the monitored air when the air flows through the wind speed sensor module 1.
Since a person may affect the wind speed in a non-stationary state, the motion compensator 15 is added to the circuit board 1201, the traveling speed is calculated from the motion data monitored by the motion compensator 15, and the wind speed affected in the non-stationary state is reflected by the traveling speed.
In the miniature weather monitoring device provided by the embodiment, the two wearing holes 15 and the threaded engaging hole 14 on the engaging base 13 are provided, wherein the two wearing holes 15 can be fixed on the shoulder or the arm by means of a bandage, a shoulder badge, a sleeve badge and the like; the threaded engagement holes 14 may be used in conjunction with a bracket.
For example: when the miniature meteorological monitoring device provided by the embodiment needs to be hung for use (for example, hung on a tree), the binding band or other rope tool passes through the wearing hole 15, the binding band or other rope tool is fixed with a branch or other hanging points, and the miniature meteorological monitoring device starts to work in an inverted state after being fixed;
when the invention is to be placed on a vehicle or other travelling tool for use, the threaded rod is first found to be magnetically or magnetically attractable, and then the threaded rod is screwed into the threaded engagement hole 14, and then the invention is attracted to the bottom of the invention (with the threaded rod) by the magnetic attraction pad, and then the invention is placed on the outside of the vehicle or other travelling tool.
When the miniature meteorological monitoring device provided by the embodiment needs to be matched with a support for use, the miniature meteorological monitoring device has two modes, wherein the first mode needs that a threaded rod matched with the threaded engagement hole 14 is arranged on the support, and the miniature meteorological monitoring device and the support are connected through the threaded rod; the second type of non-matching threaded rod requires a flat table on the top of the support to place the invention, and the placement process refers to the previous process of placing the invention on a vehicle or other travelling tool.
The same and similar parts among the various embodiments in the present specification are referred to each other, and each embodiment focuses on differences from other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. The utility model provides a cold damage monitoring and early warning system suitable for extremely cold environment which characterized in that: the system comprises an early warning analysis module, a physiological parameter monitoring module and an external environment monitoring module;
the physiological parameter monitoring module comprises a body surface temperature monitoring patch and a wristwatch type physiological signal monitoring device; the body surface temperature monitoring patch and the wristwatch type physiological signal monitoring device both comprise a wireless Bluetooth module; the wristwatch type physiological signal monitoring device monitors the electrocardio, heart rate, pulse rate, respiratory rate and blood oxygen saturation of the human body;
the external environment monitoring module comprises a wearable miniature meteorological monitoring device; the wearable miniature meteorological monitoring device comprises a wind speed sensor, a wind direction sensor, a temperature sensor, a humidity sensor, an air pressure sensor and a data base station; the data base station comprises a wireless Bluetooth module and a mobile communication module; the external environment monitoring module is accessed to a wireless network through a mobile communication module of the data base station and establishes wireless connection with the physiological parameter monitoring module through a wireless Bluetooth module;
the early warning analysis module comprises terminal equipment, a cloud server and an early warning device, wherein the terminal equipment and the cloud server are connected into a wireless network, and the early warning device is installed on the wearable miniature meteorological monitoring device;
the terminal equipment or the cloud server analyzes the wind speed, wind direction, temperature, humidity and air pressure data, body temperature, electrocardio, heart rate, pulse rate, respiratory rate and oxyhemoglobin saturation data received from the data base station, displays the analysis result, and transmits the result back to the wristwatch type physiological signal monitoring device through the data base station for display;
the terminal equipment or the cloud server compares the analysis result with the cold damage early warning value, generates an early warning signal when the analysis result exceeds the cold damage early warning value and sends the early warning signal to the wearable miniature weather monitoring device, and the wearable miniature weather monitoring device controls the early warning device to start warning.
2. The cold damage monitoring and early warning system suitable for the extremely cold environment of claim 1, characterized in that:
the body surface temperature monitoring patch, the wristwatch type physiological signal monitoring device, the wearable miniature meteorological monitoring device and the terminal equipment all comprise synchronization modules, and the synchronization time difference of the synchronization modules is less than or equal to 200 us.
3. The cold damage monitoring and early warning system suitable for the extremely cold environment of claim 1, characterized in that:
the physiological parameter monitoring module comprises three body surface temperature monitoring patches and a wristwatch type physiological signal monitoring device; the three body surface temperature monitoring pastes are used for laminating respectively in the testee right chest side, left armpit, buttock are close to backbone department.
4. The cold damage monitoring and early warning system suitable for the extremely cold environment of claim 1, characterized in that:
the external environment monitoring module comprises a plurality of wearable miniature meteorological monitoring devices, and the number of the wearable miniature meteorological monitoring devices is the same as that of the physiological parameter monitoring modules.
5. The cold damage monitoring and early warning system suitable for the extremely cold environment of claim 1, characterized in that:
the mobile communication module is a 4G module.
6. The cold damage monitoring and early warning system suitable for the extremely cold environment of claim 1, characterized in that:
the terminal equipment is a tablet computer.
7. The cold damage monitoring and early warning system suitable for the extremely cold environment of claim 1, characterized in that:
the early warning analysis module can be configured to work in a local mode or a cloud mode.
8. The cold damage monitoring and early warning system suitable for the extremely cold environment of claim 7, characterized in that:
when the early warning analysis module is configured to be in a local mode, the data base station transmits the received data of the physiological parameter monitoring module and the wearable micro meteorological monitoring device to the terminal equipment through the wireless network.
9. The cold damage monitoring and early warning system suitable for the extremely cold environment of claim 1, characterized in that:
when the early warning analysis module is configured to be in a cloud mode, the data base station transmits the received physiological parameter monitoring module and the data of the wearable miniature meteorological monitoring device to the cloud server through the wireless network, and the cloud server analyzes the received data and transmits an analysis result to the terminal equipment.
10. The cold damage monitoring and early warning system suitable for the extremely cold environment of claim 9, characterized in that:
the cloud server is configured to be capable of receiving the cold damage warning value via network transmission.
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| CN113848595A (en) * | 2021-06-30 | 2021-12-28 | 军事科学院军事医学研究院环境医学与作业医学研究所 | Wearable miniature meteorological monitoring device |
| WO2023130820A1 (en) * | 2022-01-08 | 2023-07-13 | 赵宏杰 | Organ state early warning method and system for multi-parameter monitor |
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Application publication date: 20211224 |