CN111091656A - Gas cylinder leasing system - Google Patents
Gas cylinder leasing system Download PDFInfo
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- CN111091656A CN111091656A CN201811240896.5A CN201811240896A CN111091656A CN 111091656 A CN111091656 A CN 111091656A CN 201811240896 A CN201811240896 A CN 201811240896A CN 111091656 A CN111091656 A CN 111091656A
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- leasing
- gas cylinder
- control device
- cabinet
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F17/00—Coin-freed apparatus for hiring articles; Coin-freed facilities or services
- G07F17/0042—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for hiring of objects
Abstract
The utility model provides a gas cylinder lease system, including more than one lease equipment and a high in the clouds servo equipment, wherein this lease equipment is inside to be provided with more than one at least and to be used for holding the cabinet district of placeeing of gas cylinder, consequently after being leased and take out at least one gas cylinder on any lease equipment, the hire person can return the gas cylinder after using in the lease mainframe cabinet of the same or different positions again, and the user state homoenergetic that each was placeeing the cabinet district can upload to this high in the clouds servo equipment in real time, so that can monitor the running state of each lease equipment, and can carry out replenishment and maintenance in real time.
Description
Technical Field
The invention relates to a gas cylinder leasing system, in particular to a gas cylinder leasing system which can combine a gas cylinder with leasing equipment for leasing and selling.
Background
Mountain climbing is good for promoting physical and mental health, can strengthen the functions of heart, lung and blood, and improve personal physical strength and endurance, and is leisure activity worthy of encouragement. However, according to the research report in foreign countries, high mountain pulmonary edema can occur at a height of more than 2440 m, high mountain cerebral edema can occur at a height of more than 2750 m, and acute mountain sickness is a common condition in high mountain tourism of more than 3000 m.
Therefore, the supply of oxygen is very important, and the oxygen can be inhaled to prevent altitude stress, altitude pulmonary edema and other high diseases caused by oxygen deficiency, and can also be used for the treatment and emergency treatment of acute critical altitude diseases such as altitude stress, altitude pulmonary edema, altitude cerebral edema and the like caused by altitude oxygen deficiency, and besides the prevention and emergency treatment of altitude diseases, the oxygen can be used for emergency treatment of patients with heart and lung diseases, family oxygen therapy, daily health care of pregnant women, brain fatigue recovery and other functions.
In addition to oxygen, carbon dioxide is also increasingly used, for example, by injecting it into beverages to increase pressure, thereby providing bubbles in the beverages and increasing the taste of the beverages, such as soda water and beer, and thus the demand for carbon dioxide is increasing.
However, the storage cylinder of oxygen or carbon dioxide is inconvenient to obtain, and the gas cylinder is returned after renting, so that if the gas cylinder can be combined with renting equipment for renting, selling and returning, the obtaining and returning of a renter are more facilitated, and the invention is an optimal solution.
Disclosure of Invention
The gas cylinder leasing system at least comprises more than one leasing device and more than one leasing main cabinet, wherein at least more than one cabinet placing area is arranged in the leasing main cabinet, an openable door plate is arranged on the surface of the leasing main cabinet in each cabinet placing area, a gas cylinder can be placed in each cabinet placing area, and at least one identification label is arranged on the surface of the gas cylinder; a control device, which is arranged in the leasing main cabinet and is used for controlling the operation of the leasing equipment, and the control device has a network connection function and is used for receiving and transmitting information in a network mode; at least one automatic switch device, which is arranged between the openable door panel and the cabinet placing area and is electrically connected with the control device, and the automatic switch device is used for automatically opening or closing the openable door panel; at least one volume label scanning device, which is arranged in the main rental cabinet and electrically connected with the control device, and is used for scanning the identification volume label on the surface of the gas cylinder, and the gas cylinder information obtained after scanning can be transmitted back to the control device; at least one gas monitoring device, which is arranged inside the leasing host cabinet, electrically connected with the control device and used for monitoring gas data inside the leasing host cabinet, wherein gas information obtained after monitoring can be transmitted back to the control device; the cloud servo equipment is connected with the leasing equipment and comprises an equipment information control unit which is used for receiving and recording internal state information of the leasing equipment so as to facilitate control, wherein the internal state information of the leasing equipment at least comprises the number of gas cylinders, gas cylinder information and gas data, and the equipment information control unit can record the position of each leasing equipment and update the use state of each cabinet placing area in real time; the system comprises a leasing management unit, a leasing management unit and a control unit, wherein the leasing management unit is used for generating leasing basic data, the leasing basic data at least comprise identity data of a leaser, a leasing deposit amount, a leasing record and a returning record, the leasing record is event record data of at least one gas cylinder taken out of any leasing equipment, and the returning record is event record data of at least one gas cylinder returned to any leasing equipment.
More specifically, an operation interface software is installed inside the control device of the rental host cabinet or/and an operation interface software capable of being externally connected is arranged inside the cloud server device.
More specifically, the surface of the leasing main cabinet can be provided with at least one display and control device connected with the cloud servo equipment, and the display and control device is used for leasing out or/and returning the gas cylinder.
More specifically, the gas cylinder leasing system further comprises an electronic device with an application unit, the application unit can be connected with the cloud servo equipment, and the application unit can display operation interface software installed inside the application unit or operation interface software installed inside the cloud servo equipment on the electronic device so as to lease or/and return the gas cylinder.
More specifically, the surface of the main rental cabinet can be further provided with at least one fan device electrically connected with the control device, and the fan device is used for starting to accelerate convection of air inside and outside the main rental cabinet.
More specifically, at least one photographing device electrically connected to the control device is further disposed inside or/and outside the rental host cabinet, and is configured to photograph image information inside or/and outside the rental host cabinet, and the photographed image information can be transmitted back to the control device.
More specifically, the rental main cabinet is internally provided with at least one printing device electrically connected with the control device and used for printing documents.
More specifically, the leasing main cabinet can be further provided with at least one face recognition device electrically connected with the control device on the surface, and the face recognition device is used for collecting a face image and transmitting the face image back to the control device for face recognition.
More specifically, the surface of the rental main cabinet can be further provided with at least one card reading device electrically connected with the control device, and the card reading device is used for reading any card and transmitting the read card information back to the control device, wherein the card information is credit card information or/and identification information.
More specifically, each storage cabinet area is internally provided with at least one positioning device for fixedly placing at least one gas cylinder in the storage cabinet area.
More specifically, the rental main cabinet is further internally provided with at least one positioning sensing device electrically connected with the control device, and the positioning sensing device is used for monitoring whether at least one gas cylinder is placed on the positioning device.
More specifically, the surface of the main rental cabinet can be further provided with at least one near field communication reading device electrically connected with the control device, and the near field communication reading device is used for receiving near field communication information, and the obtained near field communication information can be transmitted back to the control device.
More specifically, the surface of the leasing main cabinet can be further provided with a plurality of display lamp bodies electrically connected with the control device so as to display the opening or/and closing state of the openable door panel in a luminous manner.
More specifically, at least one temperature sensing device electrically connected to the control device is further disposed inside the main rental cabinet, and is configured to monitor temperature information inside the main rental cabinet and transmit the sensed temperature information back to the control device.
More specifically, the surface of the main rental cabinet can be further provided with at least one bar code scanning device electrically connected with the control device, and the bar code scanning device is used for scanning and obtaining bar code information, and the obtained bar code information can be transmitted back to the control device.
Drawings
Fig. 1A is a schematic view of the overall architecture of the gas cylinder leasing system of the present invention.
Fig. 1B is a schematic view of a rental apparatus of the gas cylinder rental system of the present invention.
Fig. 1C is a schematic diagram of a cloud server of the gas cylinder leasing system according to the present invention.
Fig. 2A is an appearance schematic diagram of the leasing equipment of the gas cylinder leasing system of the invention.
Fig. 2B is a schematic internal space diagram of the gas cylinder leasing system according to the invention.
Fig. 3 is a schematic view of the interior of a cabinet area of the rental apparatus of the gas cylinder rental system of the invention.
Description of the reference numerals
1-rental device
101-rental host cabinet
102-control device
103-cabinet area
1031-positioning device
104-openable door panel
105-automatic switch device
106-volume label scanning device
107-gas monitoring device
108-display and control device
109-Fan arrangement
110-camera device
111-printing device
112-card reading device
113-position sensing device
114-near field communication reading device
115-display lamp body
116-temperature sensing device
117-face recognition device
118-Bar code scanning device
2-cloud servo equipment
21-device information management and control unit
22-lease management unit
3-electronic device
31-application unit
And 4, a gas cylinder.
Detailed Description
Other technical matters, features and effects of the present invention will become apparent from the following detailed description of preferred embodiments, which proceeds with reference to the accompanying drawings.
Please refer to fig. 1A to 1C and fig. 2A to 2B, which are schematic diagrams of an overall architecture of the gas cylinder leasing system, an architecture of the mobile cloud device, an architecture of the leasing device, an architecture of the cloud server device, an appearance of the leasing device, and an internal space of the leasing device according to the present invention, wherein the gas cylinder leasing system includes more than one leasing device 1 and one cloud server device 2.
The rental device 1 includes a rental main cabinet 101, the rental main cabinet 101 is an explosion-proof cabinet, and at least one control device 102 and more than one cabinet placing area 103 are arranged inside the rental main cabinet 101, wherein the control device 102 is used for controlling the operation of the rental device 1, and the control device 102 has a network connection function and is used for receiving and transmitting information in a network manner.
A partition plate (not shown) with at least one vent can be further arranged between every two cabinet placing areas 103, so that air can flow between the at least two cabinet placing areas 103, and each cabinet placing area 103 can be used for placing at least one gas cylinder (the surface of the gas cylinder is provided with at least one identification tag, and the gas contained in the gas cylinder is oxygen, carbon dioxide and inert gas).
Each cabinet-placing area 103 is provided with an openable door panel 104 on the surface of the main rental cabinet 101, and an automatic switch device 105 is further disposed between the openable door panel 104 and the cabinet-placing area 103, wherein the automatic switch device 105 can receive an instruction of the control device 102 to automatically open or close the openable door panel 104 (or can be collocated with voice output and play when opening or closing the openable door panel 104).
At least one positioning device 1031 is further disposed inside each storage cabinet area 103, as shown in fig. 3, for more stably placing at least one gas cylinder 4 inside the storage cabinet area 103, and at least one positioning sensing device 113 is further disposed inside the main rental cabinet 101, for monitoring whether at least one gas cylinder 4 is placed on the positioning device 103.
At least one tag scanning device 106 is further disposed inside the main rental cabinet 101 for scanning an identification tag (the identification tag can be an RFID barcode or a QR Code) on the surface of the gas cylinder 4, and the scanned gas cylinder information can be transmitted back to the control device 102, so that the serial number of the gas cylinder 4 stored in the storage cabinet area 103 can be identified through the identification tag, and whether a gas cylinder meeting the specification is placed in the storage cabinet area 103 can be determined.
And this lease main cabinet 101 is inside still to be provided with at least one gas monitoring devices 107 for the inside gas data of this lease main cabinet 101 of monitoring, and the gas information of acquireing after the monitoring can be passed back to this controlling means 102, so will be able to monitor whether inside gas of lease main cabinet 101 leaks, and this controlling means 102 more can convey the gas data of monitoring to this cloud servo equipment 2, in order to be handled by this cloud servo equipment 2.
The rental host cabinet 101 can further be provided with at least one display and control device 108 connected to the cloud server device 2 on the surface, wherein the display and control device 108 includes the following two forms:
1. the display and control device 108 includes at least one display screen and at least one control button, and the display screen can display the operation interface software installed inside the control device 102 or the operation interface software inside the cloud server 2, and perform the renting operation or/and returning operation of the gas cylinder 4 by pressing the control button.
2. The display and control device 108 is a touch screen, and the touch screen can display the operation interface software installed inside the control device 102 or the operation interface software installed inside the cloud server 2, and perform the renting operation or/and returning operation of the gas cylinder 4 by pressing the touch screen.
The surface of the main rental cabinet 101 can be further equipped with at least one fan device 109, which is activated by the control device 102 to accelerate convection of air inside and outside the main rental cabinet 101, so that when the temperature sensing device 116 monitors that the internal temperature is too high, the control device 102 can automatically activate the fan device 109 to dissipate heat or remotely control the control device 102 to activate the fan device 109 to operate through the cloud server 2.
At least one camera device 110 is disposed inside or/and outside the main rental cabinet 101, wherein the camera device 110 is used for capturing image information inside or/and outside the main rental cabinet 101 and transmitting the image information back to the control device 102, and a plurality of display light bodies 115 (e.g., LED lights) can be further disposed on the surface of the main rental cabinet 101 for displaying the opening or/and closing status of the openable door 104.
At least one printing device 111 is further disposed inside the main rental cabinet 101 for printing documents (such as payment or receipt).
The main rental cabinet 101 further has at least one card reading device 112 disposed on its surface for reading any card and transmitting the read card information back to the control device 102, wherein the card information is credit card information or/and identification information.
The leasing host cabinet 101 can be provided with at least one nfc reader 114 on its surface for receiving nfc information, and the obtained nfc information can be transmitted back to the control device 102 for third party payment and employee or leasing owner login.
At least one temperature sensing device 116 is disposed inside the main rental cabinet 101 for monitoring the temperature information inside the main rental cabinet 101 and transmitting the sensed temperature information back to the control device 102.
The rental main cabinet 101 can be provided with at least one face recognition device 117 on the surface, the face recognition device 117 can collect a face image and transmit the face image back to the control device 102 for face recognition, and the rental main cabinet 101 can be further provided with at least one barcode scanning device 118 on the surface for scanning to obtain barcode information, and the obtained barcode information can be transmitted back to the control device 102.
The cloud server comprises an equipment information control unit 21 and a leasing management unit 22, the equipment information control unit 21 is used for receiving the internal state information of the leasing equipment 1 and recording the internal state information so as to facilitate control, the internal state information of the leasing equipment 1 at least comprises the number of gas cylinders, gas cylinder information and gas data, and the equipment information control unit 21 can record the position of each gas cylinder 4 selling equipment and can update the use state of each cabinet placing area 103 in real time.
The lease management unit 22 is configured to generate a lease basic data, wherein the lease basic data at least includes the identity data of the leaseholder, the amount of the lease deposit, a lease record and a return record, wherein the lease record is the event record data of at least one gas cylinder 4 taken out from any one of the lease devices 1, and the return record is the event record data of at least one gas cylinder 4 returned from any one of the lease devices 1.
In addition, the gas cylinder leasing system further comprises an electronic device 3 with an application unit 31 (wherein the electronic device can be an electronic device capable of being connected with a webpage for operation, such as a desktop computer, a notebook computer, a smart phone or a tablet computer), the application unit 31 can be connected with the cloud server 2, and the application unit 31 can display operation interface software installed in the application unit or operation interface software in the cloud server on the electronic device 3 so as to rent out or/and return the gas cylinder 4.
Before purchasing, the renter can go online, use the application unit 31 or fill out the renter's copy data through the renting equipment 1 to register directly, and after registering, the renter must pay the renting deposit before online payment, supermerchant payment or the renting equipment 1 scans the payment tool, and when the gas cylinder 4 is rented, different renting modes are as follows:
directly at any lease equipment 1, after the identity data of a leaseholder is input, the number and the specification of the gas cylinders to be leased can be selected, and after online payment or over-the-counter payment, the lease equipment 1 can automatically open the door to allow the leaseholder to take out the gas cylinders.
Directly at any rental device 1, after a bar code on the rental device 1 is scanned by a mobile phone (the bar code can be attached to the surface of the rental device 1 or displayed on a screen of the rental device 1), operation interface software constructed by the cloud server device 2 can be connected, after identity data of a renter is input, the number and the specification of gas cylinders to be rented can be selected, and then after online payment or over-the-counter payment, the rental device 1 can automatically open a door to allow the renter to take out the gas cylinders 4.
The renter can use the electronic device to connect with the operation interface software constructed by the cloud servo equipment 2, after the identity data of the renter is input, the number and the specification of the gas cylinders to be rented can be selected, and then after online payment or supermerchant payment, the cloud servo equipment 2 can specify which renter can go to which renting equipment 1 to take out the gas cylinders 4 (the renter can also inquire and select the renting equipment 1 of the gas cylinders 4).
And the gas cylinder 4 needs to be returned, and different returning and renting modes are as follows:
directly at any leasing equipment 1, after inputting the identity data of the leasing person and selecting 'return', the leasing equipment 1 can automatically open the empty cabinet placing area 103 so that the leasing person can place the gas cylinder 4 in the cabinet placing area 103.
After the barcode on the rental device 1 is scanned by the mobile phone, the operation interface software constructed by the cloud server 2 can be connected, and after the identity data of the renter is input, the renter can select 'return', and the rental device 1 can automatically open the empty cabinet area 103, so that the renter can place the gas cylinder 4 in the cabinet area 103.
The renter can use the electronic device to connect with the operation interface software constructed by the cloud server device 2, and can select 'returning' after inputting the identity data of the renter, and then the cloud server device 2 can specify which renter can go to which renter 1 to return the gas cylinder 4 (the renter can also query and select the renter 1 to return the gas cylinder 4).
In addition, because the renter must pay the rent deposit first, when the rent time is exceeded and the renter is not returned, the renter deposit is automatically deducted, and the renter is informed of the items which are not returned and the renter deposit is deducted by the mobile phone number or the E-MAIL in real time.
In addition, as the renter rents or returns the gas cylinder 4 every time, the cloud servo equipment 2 records, the using condition of the renting equipment 1 of each renting equipment 1 can be effectively controlled, the gas cylinder full of the gas cylinder can be supplemented in real time, and the renter can effectively guide or inquire the position of the machine which can be rented, taken out and returned by himself.
Compared with other prior art, the gas cylinder leasing system provided by the invention has the following advantages:
1. the gas cylinder can be combined with leasing equipment to rent, sell and return, and the gas cylinder is more beneficial to obtaining and returning by a leasing person.
2. The invention can effectively control the use condition of the cabinet placing area of each rental device, so that the full gas cylinder can be replenished in real time, and the position of the machine which can be taken out and returned by renting can be effectively guided or inquired by a renter.
The present invention is not limited to the embodiments described above, and those skilled in the art can understand the technical features and embodiments of the present invention and can make various changes and modifications without departing from the spirit and scope of the present invention.
Claims (15)
1. A gas cylinder rental system, comprising at least:
one or more rental devices, comprising:
the main cabinet leasing device comprises a leasing main cabinet, at least more than one cabinet placing area is arranged in the leasing main cabinet, an openable door plate is arranged on the surface of the leasing main cabinet in each cabinet placing area, a gas cylinder can be placed in each cabinet placing area, and at least one identification label is arranged on the surface of the gas cylinder;
at least one control device, which is arranged in the leasing main cabinet and is used for controlling the operation of the leasing equipment, and the control device has a network connection function and is used for receiving and transmitting information in a network mode;
at least one automatic switch device, which is arranged between the openable door panel and the cabinet placing area and is electrically connected with the control device, and the automatic switch device is used for automatically opening or closing the openable door panel;
at least one volume label scanning device, which is arranged in the main rental cabinet and electrically connected with the control device, and is used for scanning the identification volume label on the surface of the gas cylinder, and the gas cylinder information obtained after scanning can be transmitted back to the control device;
at least one gas monitoring device, which is arranged inside the leasing host cabinet, electrically connected with the control device and used for monitoring gas data inside the leasing host cabinet, wherein gas information obtained after monitoring can be transmitted back to the control device;
a cloud server connected to the rental device, the cloud server comprising:
the equipment information control unit is used for receiving and recording the internal state information of the renting equipment so as to control the renting equipment conveniently, the internal state information of the renting equipment at least comprises the number of gas cylinders, gas cylinder information and gas data, and the equipment information control unit can record the position of each renting equipment and update the use state of each cabinet placing area in real time;
and the lease management unit is electrically connected with the equipment information control unit and is used for generating lease basic data, wherein the lease basic data at least comprises the identity data of a leaseholder, the amount of a lease deposit, lease records and return records, the lease records are event record data of at least one gas cylinder taken out of any lease equipment, and the return records are event record data of at least one gas cylinder returned to any lease equipment.
2. The gas cylinder leasing system of claim 1, wherein an operation interface software is installed inside a control device of the leasing main cabinet or/and an operation interface software is arranged inside the cloud servo device.
3. The gas cylinder leasing system according to claim 2, wherein the leasing main cabinet is further provided with at least one display and control device connected with the cloud servo device on the surface for controlling the gas cylinder leasing and/or returning operation.
4. The gas cylinder leasing system according to claim 2, further comprising an electronic device with an application unit, wherein the application unit can be connected with the cloud server, and the application unit can display operation interface software installed inside the application unit or operation interface software installed inside the cloud server on the electronic device for controlling to perform leasing operation or/and returning operation of the gas cylinder, wherein the electronic device can be a desktop computer, a notebook computer, a smart phone or a tablet computer.
5. The gas cylinder leasing system of claim 1, wherein at least one fan device electrically connected to the control device can be further disposed on the surface of the main leasing cabinet for starting to accelerate convection of air inside and outside the main leasing cabinet.
6. The gas cylinder leasing system of claim 1, wherein at least one camera device electrically connected with the control device is further arranged inside or/and outside the leasing main cabinet and used for shooting image information inside or/and outside the leasing main cabinet, and the image information obtained after shooting can be transmitted back to the control device.
7. The gas cylinder leasing system according to claim 1, wherein at least one printing device electrically connected with the control device is further arranged inside the leasing main cabinet and used for printing documents.
8. The gas cylinder leasing system according to claim 1, wherein at least one face recognition device electrically connected with the control device can be further arranged on the surface of the leasing main cabinet, and is used for collecting a face image and transmitting the face image back to the control device for face recognition.
9. The gas cylinder leasing system of claim 1, wherein at least one card reading device electrically connected with the control device can be further arranged on the surface of the leasing main cabinet, and is used for reading any card and transmitting the read card information back to the control device, wherein the card information is credit card information or/and identification information.
10. The gas cylinder leasing system of claim 1, wherein at least one positioning device is further arranged in each cabinet area and used for fixedly placing at least one gas cylinder in the cabinet area.
11. The gas cylinder leasing system of claim 10, wherein at least one positioning sensing device electrically connected with the control device is further arranged inside the leasing main cabinet and used for monitoring whether at least one gas cylinder is placed on the positioning device.
12. The gas cylinder leasing system according to claim 1, wherein at least one near field communication reading device electrically connected with the control device can be further arranged on the surface of the leasing main cabinet, and is used for receiving near field communication information, and the obtained near field communication information can be transmitted back to the control device.
13. The gas cylinder leasing system of claim 1, wherein a plurality of display lamp bodies electrically connected with the control device can be further arranged on the surface of the leasing main cabinet to illuminate and display the opening or/and closing state of the openable door panel.
14. The gas cylinder leasing system of claim 1, wherein at least one temperature sensing device electrically connected with the control device is further arranged inside the leasing main cabinet and used for monitoring temperature information inside the leasing main cabinet and transmitting the temperature information obtained by sensing back to the control device.
15. The gas cylinder leasing system of claim 1, wherein at least one bar code scanning device electrically connected with the control device can be further arranged on the surface of the leasing main cabinet, and is used for scanning and obtaining bar code information, and the obtained bar code information can be transmitted back to the control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811240896.5A CN111091656A (en) | 2018-10-23 | 2018-10-23 | Gas cylinder leasing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811240896.5A CN111091656A (en) | 2018-10-23 | 2018-10-23 | Gas cylinder leasing system |
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| CN111091656A true CN111091656A (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811240896.5A Pending CN111091656A (en) | 2018-10-23 | 2018-10-23 | Gas cylinder leasing system |
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| CN (1) | CN111091656A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116524654A (en) * | 2023-06-29 | 2023-08-01 | 深圳市万为物联科技有限公司 | Battery management system of electric vehicle |
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| CN108416934A (en) * | 2018-03-27 | 2018-08-17 | 青岛未来移动医疗科技有限公司 | A kind of automatic sharing means of breathing diagnostic equipment and sharing method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116524654A (en) * | 2023-06-29 | 2023-08-01 | 深圳市万为物联科技有限公司 | Battery management system of electric vehicle |
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