CN109212434A - A kind of high-frequency direct-current switch power supply current-voltage-humiture monitoring device - Google Patents
A kind of high-frequency direct-current switch power supply current-voltage-humiture monitoring device Download PDFInfo
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- CN109212434A CN109212434A CN201811347041.2A CN201811347041A CN109212434A CN 109212434 A CN109212434 A CN 109212434A CN 201811347041 A CN201811347041 A CN 201811347041A CN 109212434 A CN109212434 A CN 109212434A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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Abstract
The present invention provides a kind of high-frequency direct-current switch power supply current-voltage-humiture monitoring devices, belong to electrical technology field, include emitter and reception device, the emitter is to acquire, the output Current Voltage and temperature and humidity value of control and transmission high-frequency direct-current Switching Power Supply cabinet simultaneously show its collection value, collection value of the reception device to receive and show the emitter, send a control signal to emitter, acquire Current Voltage and temperature and humidity value, show the value of itself acquisition, carried out data transmission between emitter and receiving device using 2.4G frequency range or RS485 module, the present invention has installation simple, wirelessly transmitting data is stablized, can remote control the advantages that.
Description
Technical field
The invention belongs to electrical technology fields, more particularly to a kind of high-frequency direct-current switch power supply current-voltage-temperature and humidity
Monitoring device.
Background technique
During Rare Earth Electrolysis, electric current, voltage stability be to influence electrolysis effectiveness principal element, stablize, accurate electricity
Galvanic electricity pressure can the stability for guaranteeing product quality lower to a certain degree.High-frequency direct-current Switching Power Supply may in During Process of Long-term Operation
There is abnormal temperature rise phenomenon, especially in the case where inputting three-phase current unbalance, temperature rise is particularly acute.Temperature rise is to influence height
Frequency direct-current switch power supply exports the main reason for factor of Current Voltage shakiness, in Rare Earth Electrolysis power cabinet equipment room, mostly
Number uses semiclosed display power cabinet, and heat dissipation effect is bad, if not carrying out to the temperature of corresponding power cabinet, electric current, voltage timely
Effective monitoring, high temperature will lead to power cabinet cisco unity malfunction, at the same export Current Voltage stability can not in time into
Row monitoring, in addition, the ambient humidity of high-frequency direct-current Switching Power Supply will affect reliability and the service life of equipment original part, therefore, Ying Bao
Card humidity maintains equipment for a long time and works normally in allowed band.
The prior art mostly has the disadvantage in that acquisition signal is single；Remote control cannot be carried out to the data of monitoring；No
Between high-frequency apparatus, vulnerable to the interference of electromagnetic field, data packetloss is caused；Transmission range is short, and data are unstable；It cannot be right
High current low-voltage is acquired.
Therefore, the emphasis how to solve the above problems as those skilled in the art's research.
Summary of the invention
It is an object of the invention to provide a kind of high-frequency direct-current switch power supply current-voltage-humiture monitoring devices, can
It solves the above problems.
The purpose of the present invention is realized by following technical proposals:
A kind of high-frequency direct-current switch power supply current-voltage-humiture monitoring device includes emitter and reception device；
The emitter and reception device are by Core Microcontroller, voltage acquisition module, current acquisition module, electric current
Voltage control module, power module, 2.4G wireless module, RS485 communication module, temperature collecting module, humidity collection module,
The external memory module of USB, date-time week module, key module and touch screen module composition；The Core Microcontroller point
Be not connected to the voltage acquisition module, current acquisition module, Current Voltage control module, power module, 2.4G wireless module,
RS485 communication module, temperature collecting module, humidity collection module, the external memory module of USB, date-time week module, key
Module and touch screen module；
Output voltage terminal of the voltage acquisition module to connect direct-current switch power supply, collection voltages value simultaneously will be described
Voltage value is sent to the Core Microcontroller；
Current divider of the current acquisition module to connect high-frequency direct-current Switching Power Supply cabinet acquires current value, and by institute
It states current value and is sent to the Core Microcontroller；
The Current Voltage control module is adjusted to connect the current and voltage signals of high-frequency direct-current Switching Power Supply master control borad
End receives the control signal of micro core processor and is sent to current and voltage signals adjustable side；
The 2.4G wireless module and RS485 communication module are to the data transmission between emitter and reception device；
The temperature collecting module is to acquire the temperature of power cabinet and be sent to Core Microcontroller；
The humidity collection module is to acquire the humidity of power cabinet and be sent to Core Microcontroller；
The external memory module of USB is to connect database, and the receiving end number that data transmission, deposit band are had permission
According to library；
The key module is to be arranged alarm threshold value and change the size of high-frequency direct-current switch power supply output current value；
Current value, voltage value of the touch screen module to show power cabinet output, and the temperature and humidity of display power cabinet
Situation；
The date-time week module is to be sent to micro core processor time signal.
Preferably, the Core Microcontroller includes that AD samples pin, GPIO pin, power pin, SPI communication pipe
Foot, UART pin and I2C bus；The AD of the voltage acquisition module and Core Microcontroller samples pin connection；The electric current
The AD of acquisition module and Core Microcontroller samples pin connection；The power pin of the power module and Core Microcontroller connects
It connects；The 2.4G wireless module is connected with the SPI communication pin of Core Microcontroller；The RS485 communication module and core
The UART pin of microcontroller connects；The I of the USB external memory module and Core Microcontroller2C bus is connected；The electricity
Flow voltage control module, temperature collecting module, humidity collection module, date-time week module, key module and touch screen mould
Block is connected with the GPIO pin of Core Microcontroller.
Preferably, the emitter and reception device are also comprising the WiFi module and Ethernet to connect network
Module；The WiFi module is electrically connected with the Core Microcontroller, the ethernet module and Core Microcontroller electricity
Connection.
Preferably, the Core Microcontroller is the S5PV210 of Samsung Cortex-A8 framework.
Preferably, the 2.4G wireless module is TI CC2530 chip；The RS485 module is using U.S. letter RS485 string
Row bus standard.
Preferably, the date-time week module is T2533DD3 time calendar clock.
Preferably, the touch screen module is that 10.4 cun of LCD touch capacitance plate.
Preferably, the emitter and reception device also include a shell to protective device, the shell
It is embedding that body is equipped with ZigBee antenna, voltage acquisition module flush mounting, current acquisition module flush mounting, Current Voltage control module
Enter device, touch screen flush mounting, key module flush mounting, USB external interface, RS485 interface, power supply line and power supply to open
It closes；
The Core Microcontroller, power module, 2.4G wireless module, RS485 communication module, WiFi module, temperature are adopted
Collection module, humidity collection module, the external memory module of USB and date-time week module collectively form circuit board and are set in the housing
Chamber, the ZigBee antenna are electrically connected 2.4G wireless module, and the USB external interface is electrically connected the external memory module of USB, described
RS485 interface is electrically connected RS485 communication module, and the power supply line and the equal electric connection of power supply module of power switch, the voltage are adopted
Collecting module to be set in voltage acquisition module flush mounting, the current acquisition module is set in current acquisition module flush mounting,
The Current Voltage control module is set in Current Voltage control module flush mounting, and it is embedding that the touch screen module is set to touch screen
Enter in device, the key module is set in key module flush mounting.
Preferably, the emitter and reception device are also comprising the WiFi module and Ethernet to connect network
Module, the shell also include WiFi antenna and network interface, and the WiFi module is electrically connected with the Core Microcontroller,
WiFi module is electrically connected in the WiFi antenna, and the ethernet module is electrically connected with the Core Microcontroller, Ethernet mould
Block is electrically connected the network interface.
Preferably, the ethernet module is KSZ8851SNL Ethernet chip；The WiFi module is peace letter
It can ESP8266WiFi module.
Compared with prior art, the beneficial effects of the present invention are:
Reception device and emitter structure having the same, electric current, voltage acquisition module and the temperature and humidity mould of receiving end
Block be it is reserved, in the case where the electric current of some emitter, voltage acquisition module and temperature and humidity module damage, only need to will connect
The internal processes of receiving apparatus and emitter exchange downloading again, are then used interchangeably emitter and reception device, reach
The purpose of save the cost.
Receiving end is installed on control centre, and transmitting terminal is installed on power cabinet, transmitting terminal acquire the electric current of power cabinet, voltage and
Temperature-humidity signal is simultaneously transferred to receiving end by 2.4G wireless signal or RS485 interface, can be on the LCD display of receiving end
Remotely see output electric current, the voltage signal of each power cabinet, while can see the temperature and humidity situation of power cabinet, and can be
Alarm threshold value is set on receiving end, and when electric current or temperature and humidity fluctuation are abnormal, system is alarmed automatically, reminds related work people
Member.Transmitting terminal is transmitted back to the data come and is automatically credited in the reception client database that band has permission by receiving end, to be managed collectively.
Power cabinet output Current Voltage can be adjusted according to the actual situation on the receive side, preset value is set in receiving end, be transferred to
Power cabinet Current Voltage value is adjusted by Current Voltage control module after transmitting terminal and processing, to reach default effect.
Transmitting terminal can show electric current, voltage and the temperature-humidity signal of itself power cabinet collected simultaneously, and emit
It is shown on the LCD display at end, and alarm threshold value can be set by the key module of transmitting terminal and preset the output of the power cabinet
Current Voltage value, facilitates staff in inspection, according to the working condition of each power cabinet, controls to adjust the ginseng of power cabinet
Number.
The present invention has rational design, and 2.4G wireless module and RS485 communication module are used between emitter and reception device
Data communication is carried out, can avoid the interference in high frequency switch power magnetic field, what the installation of system was not laid out by high frequency switch power cabinet
Signal strong interference immunity, long transmission distance are transmitted in limitation；Micro core processor connect voltage acquisition module, current acquisition module,
Thermal module and humidity module acquire different multiple signals, it can be achieved that exporting Current Voltage and temperature and humidity situation to power cabinet
It is monitored, analyzes, alarms and stores；Emitter and reception device are equipped with Current Voltage control module, in reception device
Or the current value of high-frequency direct-current Switching Power Supply output can be manipulated on emitter by key.
In conclusion the present invention can in time, accurately reflect high frequency switch power cabinet to be measured output electric current, ambient temperature and humidity
Situation of change can be alarmed by receiving end monitoring device when monitoring data exception, avoid setting caused by overheating
Standby failure, improves the automatization level of Rare Earth Electrolysis equipment management.
Detailed description of the invention
Fig. 1 is the hardware block diagram of reception device provided by embodiment one or emitter；
Fig. 2 is the schematic diagram of reception device provided by embodiment one or emitter；
Fig. 3 is the transmission schematic diagram of detection device provided by embodiment one；
Appended drawing reference: 1- shell, 2-ZigBee antenna, 3-WiFi antenna, 4- voltage acquisition module flush mounting, 5- electric current
Acquisition module flush mounting, 6- touch screen flush mounting, 7- key module flush mounting, 8- circuit board, 9-USB external interface,
10- network interface, 11-RS485 interface, 12- power switch, 13- Current Voltage control module flush mounting, 14- power supply line.
Specific embodiment
The present invention is further illustrated with attached drawing combined with specific embodiments below.
Embodiment one
As shown in Figure 1 to Figure 3, a kind of high-frequency direct-current switch power supply current-voltage-humiture monitoring device includes transmitting
Device and reception device；
The emitter and reception device are by Core Microcontroller, voltage acquisition module, current acquisition module, electric current
Voltage control module, power module, 2.4G wireless module, RS485 communication module, temperature collecting module, humidity collection module,
The external memory module of USB, date-time week module, key module, touch screen module and shell composition；
The emitter and reception device also include a shell 1 to protective device, and the shell 1 is equipped with
ZigBee antenna 2, voltage acquisition module flush mounting 4, current acquisition module flush mounting 5, the insertion of Current Voltage control module
Device 13, touch screen flush mounting 6, key module flush mounting 7, USB external interface 9, RS485 interface 11,14 and of power supply line
Power switch 12；
The Core Microcontroller, power module, 2.4G wireless module, RS485 communication module, WiFi module, temperature are adopted
Collection module, humidity collection module, the external memory module of USB and date-time week module collectively form circuit board 8 set on shell 1
Inner cavity, the ZigBee antenna 2 are electrically connected 2.4G wireless module, and the USB external interface 9 is electrically connected the external memory module of USB,
The RS485 interface 11 is electrically connected RS485 communication module, the power supply line 14 and the equal electric connection of power supply module of power switch 12,
The voltage acquisition module is set in voltage acquisition module flush mounting 4, and the current acquisition module is set to current acquisition module
In flush mounting 5, the Current Voltage control module is set in Current Voltage control module flush mounting 13, the touch screen mould
Block is set in touch screen flush mounting 6, and the key module is set in key module flush mounting 7.
The Core Microcontroller is respectively electrically connected to the voltage acquisition module, current acquisition module, Current Voltage control
Molding block, power module, 2.4G wireless module, RS485 communication module, temperature collecting module, humidity collection module, USB are external
Memory module, date-time week module, key module and touch screen module；
Output voltage terminal of the voltage acquisition module to connect direct-current switch power supply, collection voltages value simultaneously will be described
Voltage value is sent to the Core Microcontroller；
Current divider of the current acquisition module to connect high-frequency direct-current Switching Power Supply cabinet acquires current value, and by institute
It states current value and is sent to the Core Microcontroller；
The Current Voltage control module is adjusted to connect the current and voltage signals of high-frequency direct-current Switching Power Supply master control borad
End receives the control signal of micro core processor and is sent to current and voltage signals adjustable side；
The 2.4G wireless module and RS485 communication module are to the data transmission between emitter and reception device；
The temperature collecting module is to acquire the temperature of power cabinet and be sent to Core Microcontroller；
The humidity collection module is to acquire the humidity of power cabinet and be sent to Core Microcontroller；
The external memory module of USB is to connect database, and the receiving end number that data transmission, deposit band are had permission
According to library；
The key module is to be arranged alarm threshold value and change the size of high-frequency direct-current switch power supply output current value；
Current value, voltage value of the touch screen module to show power cabinet output, and the temperature and humidity of display power cabinet
Situation；
The date-time week module is to be sent to micro core processor time signal.
Receiving end and transmitting terminal structure having the same, only internal processes need to be exchanged downloading can be used interchangeably, and receive
End is installed on control centre, and transmitting terminal is installed on power cabinet, and transmitting terminal acquires electric current, voltage and the temperature-humidity signal of power cabinet simultaneously
It is transferred to receiving end by 2.4G wireless signal or RS485 interface, can remotely be seen on the LCD display of receiving end each
Output electric current, the voltage signal of power cabinet, while can see the temperature and humidity situation of power cabinet, and can be arranged on the receive side
Alarm threshold value, when electric current or temperature and humidity fluctuation are abnormal, system is alarmed automatically, reminds relevant staff.It receiving end will
Transmitting terminal is transmitted back to the data come and is automatically credited in the reception client database that band has permission, to be managed collectively.On the receive side
Power cabinet output Current Voltage can be adjusted according to the actual situation, set preset value in receiving end, be transferred to transmitting terminal and locate
Power cabinet Current Voltage value is adjusted by Current Voltage control module after reason, to reach default effect.
Further, the Core Microcontroller is the S5PV210 of Samsung Cortex-A8 framework；The processor host frequency
1.0GHZ, memory 512M DDR2,4G FLASH, 100M Ethernet interface, operating system: linux, android is supported；It is described
Core Microcontroller includes AD sampling pin, GPIO pin, power pin, SPI communication pin, UART pin and I2C bus；Institute
State the AD sampling pin connection of voltage acquisition module and Core Microcontroller；The current acquisition module and Core Microcontroller
AD samples pin connection；The connection of the power pin of the power module and Core Microcontroller；The 2.4G wireless module with
The SPI communication pin of Core Microcontroller is connected；The connection of the UART pin of the RS485 communication module and Core Microcontroller；
The I of the USB external memory module and Core Microcontroller2C bus is connected；The Current Voltage control module, temperature acquisition
Module, humidity collection module, date-time week module, key module and touch screen module with the GPIO of Core Microcontroller
Pin is connected.
Further, 2.4G wireless module is TI CC2530 chip；CC2530 chip is TI company latest generation ZigBee
SOC chip, wireless protocols Zigbee 2007 is visual, open, and 1600 meters of transmission range, wireless frequency 2.4GHZ；The RS485
Module supports that data transfer rate 10Mbps, the maximum communication distance of RS-485 are about using U.S. letter RS485 serial bus standard, the standard
1219M；The date-time week module is T2533DD3 time calendar clock；The touch screen module is 10.4 cun of LCD touchings
Capacitance plate is touched, resolution ratio is 800 × 600.
Further, emitter and reception device are also comprising the WiFi module and Ethernet mould to connect network
Block；The WiFi module is electrically connected with the Core Microcontroller, and the ethernet module is electrically connected with the Core Microcontroller
It connects；WiFi module uses the ESP8266WiFi module of An Xinke company, supports AP, STA, AP+STA coexistance model is powerful
LWIP agreement is run in inside, and rapid configuration simultaneously connects network；Ethernet module uses KSZ8851SNL Ethernet chip,
KSZ8851SNL physical layer protocol layer interface is supported completely using 3 classes, 4 classes, 5 class unshielded twisted pairs and 100MBps under 10MBps
Lower 5 class unshielded twisted pairs.Using the above design, emitter and reception device is facilitated to access internet, conveniently accessible shifting
Dynamic equipment, is monitored in real time by the data that mobile device (such as mobile phone) acquires emitter.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of high-frequency direct-current switch power supply current-voltage-humiture monitoring device, it is characterised in that: comprising emitter and
Reception device；
The emitter and reception device are by Core Microcontroller, voltage acquisition module, current acquisition module, Current Voltage
Control module, power module, 2.4G wireless module, RS485 communication module, temperature collecting module, humidity collection module, outside USB
Connect memory module, date-time week module, key module and touch screen module composition；The Core Microcontroller is electrically connected respectively
Be connected to the voltage acquisition module, current acquisition module, Current Voltage control module, power module, 2.4G wireless module,
RS485 communication module, temperature collecting module, humidity collection module, the external memory module of USB, date-time week module, key
Module and touch screen module；
Output voltage terminal of the voltage acquisition module to connect direct-current switch power supply, collection voltages value and by the voltage
Value is sent to the Core Microcontroller；
Current divider of the current acquisition module to connect high-frequency direct-current Switching Power Supply cabinet acquires current value, and by the electricity
Flow valuve is sent to the Core Microcontroller；
Current and voltage signals adjustable side of the Current Voltage control module to connect high-frequency direct-current Switching Power Supply master control borad, connects
It receives the control signal of micro core processor and is sent to current and voltage signals adjustable side；
The 2.4G wireless module and RS485 communication module are to the data transmission between emitter and reception device；
The temperature collecting module is to acquire the temperature of power cabinet and be sent to Core Microcontroller；
The humidity collection module is to acquire the humidity of power cabinet and be sent to Core Microcontroller；
The external memory module of USB is to connect database, and the reception end data that data transmission, deposit band are had permission
Library；
The key module is to be arranged alarm threshold value and change the size of high-frequency direct-current switch power supply output current value；
Current value, voltage value of the touch screen module to show power cabinet output, and the temperature and humidity situation of display power cabinet；
The date-time week module is to be sent to micro core processor time signal.
2. high-frequency direct-current switch power supply current-voltage-humiture monitoring device according to claim 1, it is characterised in that:
The Core Microcontroller includes AD sampling pin, GPIO pin, power pin, SPI communication pin, UART pin and I2C is total
Line；The AD of the voltage acquisition module and Core Microcontroller samples pin connection；The current acquisition module and core micro-control
The AD sampling pin connection of device processed；The connection of the power pin of the power module and Core Microcontroller；The wireless mould of 2.4G
Block is connected with the SPI communication pin of Core Microcontroller；The UART pin of the RS485 communication module and Core Microcontroller
Connection；The I of the USB external memory module and Core Microcontroller2C bus is connected；The Current Voltage control module, temperature
Acquisition module, humidity collection module, date-time week module, key module and touch screen module with Core Microcontroller
GPIO pin is connected.
3. high-frequency direct-current switch power supply current-voltage-humiture monitoring device according to claim 1, it is characterised in that:
The emitter and reception device are also comprising the WiFi module and ethernet module to connect network；The WiFi module
It is electrically connected with the Core Microcontroller, the ethernet module is electrically connected with the Core Microcontroller.
4. high-frequency direct-current switch power supply current-voltage-humiture monitoring device according to claim 1, it is characterised in that:
The Core Microcontroller is the S5PV210 of Samsung Cortex-A8 framework.
5. high-frequency direct-current switch power supply current-voltage-humiture monitoring device according to claim 1, it is characterised in that:
The 2.4G wireless module is TI CC2530 chip；The RS485 module is using U.S. letter RS485 serial bus standard.
6. high-frequency direct-current switch power supply current-voltage-humiture monitoring device according to claim 1, it is characterised in that:
The date-time week module is T2533DD3 time calendar clock.
7. high-frequency direct-current switch power supply current-voltage-humiture monitoring device according to claim 1, it is characterised in that:
The touch screen module is that 10.4 cun of LCD touch capacitance plate.
8. high-frequency direct-current switch power supply current-voltage-humiture monitoring device according to claim 1, it is characterised in that:
The emitter and reception device also include a shell (1) to protective device, and the shell (1) is equipped with ZigBee
Antenna (2), voltage acquisition module flush mounting (4), current acquisition module flush mounting (5), the insertion of Current Voltage control module
Device (13), touch screen flush mounting (6), key module flush mounting (7), USB external interface (9), RS485 interface (11),
Power supply line (14) and power switch (12)；
The Core Microcontroller, power module, 2.4G wireless module, RS485 communication module, WiFi module, temperature acquisition mould
Block, humidity collection module, the external memory module of USB and date-time week module collectively form circuit board (8) set on shell (1)
Inner cavity, the ZigBee antenna (2) are electrically connected 2.4G wireless module, and the USB external interface (9) is electrically connected the external storage of USB
Module, the RS485 interface (11) are electrically connected RS485 communication module, and the power supply line (14) and power switch (12) are electrically connected
Power module is connect, the voltage acquisition module is set in voltage acquisition module flush mounting (4), and the current acquisition module is set to
In current acquisition module flush mounting (5), the Current Voltage control module is set to Current Voltage control module flush mounting
(13) in, the touch screen module is set in touch screen flush mounting (6), and the key module is set to key module flush mounting
(7) in.
9. high-frequency direct-current switch power supply current-voltage-humiture monitoring device according to claim 8, it is characterised in that:
The emitter and reception device are also comprising the WiFi module and ethernet module to connect network, the shell (1)
It is also electrically connected comprising WiFi antenna (3) and network interface (10), the WiFi module with the Core Microcontroller, WiFi module
It is electrically connected in the WiFi antenna (3), the ethernet module is electrically connected with the Core Microcontroller, and ethernet module is electrically connected
Connect the network interface (10).
10. high-frequency direct-current switch power supply current-voltage-humiture monitoring device according to claim 3 or 9, feature
Be: the ethernet module is KSZ8851SNL Ethernet chip；The WiFi module is that peace letter can ESP8266
WiFi module.
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| CN201811347041.2A CN109212434A (en) | 2018-11-13 | 2018-11-13 | A kind of high-frequency direct-current switch power supply current-voltage-humiture monitoring device |
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| CN201811347041.2A CN109212434A (en) | 2018-11-13 | 2018-11-13 | A kind of high-frequency direct-current switch power supply current-voltage-humiture monitoring device |
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| CN113552522A (en) * | 2021-07-22 | 2021-10-26 | 杭州轨物科技有限公司 | Automatic correction method of low-voltage shunt monitoring equipment |
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| CN201408991Y (en) * | 2009-05-12 | 2010-02-17 | 武汉经伦通信设备有限公司 | Dynamical power supply |
| CN102073364A (en) * | 2009-11-19 | 2011-05-25 | 华硕电脑股份有限公司 | Multi-phase power supply device and current adjustment method thereof |
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| CN104765302A (en) * | 2015-03-20 | 2015-07-08 | 国家电网公司 | Detection device for power supply system of substation routing inspection device |
| CN206620147U (en) * | 2017-03-30 | 2017-11-07 | 乐山师范学院 | Control gateway for laboratory |
| CN207408502U (en) * | 2017-08-09 | 2018-05-25 | 国网江苏省电力公司徐州供电公司 | Monitor and high-frequency switching power supply module based on communication power supply |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110631632A (en) * | 2019-09-05 | 2019-12-31 | 宁波优帕信息科技有限公司 | Paperless temperature and humidity display system capable of recording continuously |
| CN113552522A (en) * | 2021-07-22 | 2021-10-26 | 杭州轨物科技有限公司 | Automatic correction method of low-voltage shunt monitoring equipment |
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