CN110031669B - Super-current monitor - Google Patents
Super-current monitor Download PDFInfo
- Publication number
- CN110031669B CN110031669B CN201910454152.1A CN201910454152A CN110031669B CN 110031669 B CN110031669 B CN 110031669B CN 201910454152 A CN201910454152 A CN 201910454152A CN 110031669 B CN110031669 B CN 110031669B
- Authority
- CN
- China
- Prior art keywords
- chip
- pin
- resistor
- ammeter
- controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004891 communication Methods 0.000 claims abstract description 43
- 239000003990 capacitor Substances 0.000 claims description 29
- 238000012544 monitoring process Methods 0.000 claims description 16
- 239000013078 crystal Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 7
- 230000000007 visual effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 8
- 230000006855 networking Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/04—Measuring peak values or amplitude or envelope of ac or of pulses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
An ultra-large current monitor. The product comprises a current transformer and a box body, wherein the current transformer is arranged on the outer side of the box body, an ammeter, a controller, an alarm device, a power module and a knob are arranged in the box body, the signal input end of the ammeter is connected with the signal output end of the current transformer, the communication end of the controller is connected with the communication end of the ammeter, the alarm device is connected with the control end of the controller, and the power module is connected with the ammeter, the controller and the alarm device; the knob enables and disables the alarm device. The invention is used for the ultra-large current monitor.
Description
Technical field:
The invention relates to an ultra-large current monitor.
The background technology is as follows:
The instrument and equipment are basic conditions of production scientific research and technical innovation, and are important marks for measuring the state of technology development. With the rapid development of social economy and the arrival of knowledge information age, people use instruments and equipment more frequently, so that the brought instrument management demands are larger and larger, and particularly, the monitoring of some instruments and equipment with high value and large working current is more and more important.
At present, the monitoring devices of ultra-large current type instruments and equipment with working current reaching hundreds of ampere level are very few, the monitored instruments are required to be powered off during installation, the deployment time is long, the installation is inconvenient, and the requirements cannot be met when the instruments which are required to be powered off are monitored. And the devices are generally monitored locally and displayed locally, cannot be monitored in a networking way, and cannot meet the requirements in use.
The invention comprises the following steps:
the invention aims to provide an ultra-large current monitor which is convenient to install and can be used for networking monitoring.
The above object is achieved by the following technical scheme:
The ultra-large current monitor comprises a current transformer and a box body, wherein the current transformer is arranged on the outer side of the box body, an ammeter, a controller, an alarm device, a power module and a knob are arranged in the box body, the signal input end of the ammeter is connected with the signal output end of the current transformer, the communication end of the controller is connected with the communication end of the ammeter, the alarm device is connected with the control end of the controller, and the power module is connected with the ammeter, the controller and the alarm device; the knob enables and disables the alarm device.
The current transformer converts a hundred-ampere level current signal of a power supply cable of a tested instrument into an ampere level current signal and outputs the ampere level current signal to the ammeter, and the controller continuously reads current value data in the ammeter and uploads the current value data to a remote instrument monitoring system through a wireless communication module in the controller; the controller judges the read current value, alarms the current exceeding the set threshold value, and uploads the alarm information to the remote instrument monitoring system.
The current transformers are open-close type, and are directly sleeved on an instrument power supply phase line during installation, and the number of the current transformers is 1-3; the ammeter is a three-phase digital display ammeter with a wired communication interface, the controller reads the data of the current value through the interface, and the three-phase digital display ammeter displays the current value in real time; the current transformer is electrically connected with the ammeter at the bottom of the box body through an aviation plug; the controller comprises a main control module, a wired communication module, a wireless communication module, a relay module and a power supply module, wherein the controller communicates with the ammeter through the wired communication module, communicates with the remote instrument monitoring system through the wireless communication module and controls the alarm device through the relay module; the alarm device is an audible and visual alarm, and is enabled and disabled by the knob, and is controlled by the controller during enabling.
The super-large current monitor is characterized in that the relay module comprises a chip U6, a pin 8 of the chip U6 is connected with a capacitor C15, a pin 5 of the chip U6 is connected with a contactor K1, and a pin 1 of the chip U6 is connected with the relay K1.
The ultra-large current monitor is characterized in that the wired communication module is an RS485 wired communication module, the wired communication module comprises a chip U5, and a No. 12 pin and a No. 13 pin of the chip U5 are connected with a resistor R11.
The ultra-large current monitor is characterized in that the master control module comprises a chip U4, pins 6 and 7 of the chip U4 are connected with a crystal oscillator Y1, one end of the crystal oscillator Y1 is connected with a capacitor C11, the other end of the crystal oscillator Y1 is connected with a capacitor C12, pins 24 of the chip U4 are connected with a resistor 16 and a resistor 15, pins 25 of the chip U4 are connected with a resistor 9, pins 29 of the chip U4 are connected with a resistor 10, pins 8 of the chip U4 are connected with a plug connector P2, pins 44 and 41 of the chip U4 are connected with a capacitor C13, the capacitor C13 is connected with a capacitor C14 in parallel, pins 39 of the chip U4 are connected with a plug connector P3, the plug connector P3 is connected with a resistor R7 and a capacitor C10, and the resistor R7 is connected with a diode D2 in parallel.
The ultra-large current monitor is characterized in that the wireless communication module comprises a chip Z1, a pin 10 of the chip Z1 is connected with a resistor R14, pins 1 and 4 of the chip Z1 are connected with a resistor R13, the resistor R14 is connected with the resistor R13, a pin 20 of the chip Z1 is connected with a capacitor C16, and a pin 28 of the chip Z1 is connected with a resistor R12.
The ultra-large current monitor is characterized in that the power supply module further comprises a chip U2, a pin 1 of the chip U2 is connected with the chip U1 and the chip U3, a pin 11 and a pin 9 of the chip U1 are both connected with the inductor L1, a pin 1 and a pin 3 of the chip U2 are both connected with the capacitor C7, a pin 5 of the chip U2 is connected with the capacitor C8, a pin 1 and a pin 2 of the chip U3 are connected with the capacitor C6, and a pin 3 and a pin 4 of the chip U3 are connected with the capacitor C9; the chip U1's 12 number pin connect diode D1, diode D1 connect insurance resistance F1, insurance resistance F1 connect plug connector P1, chip U1's 14 number pin connecting resistance R3, chip U1's 3 number pin connecting capacitance C5, chip U1's 12 number pin connecting capacitance C2 and electric capacity C1, electric capacity C2 parallel connection electric capacity C1, chip U1's 14 number pin connecting resistance R3, chip U1's 7 number pin connecting resistance R1, resistance R2, electric capacity C3, electric capacity C4, resistance R1 connecting resistance R4.
The beneficial effects are that:
1. The invention effectively solves the problems that the monitoring device of the ultra-large current type instrument is inconvenient to install and can not be monitored in a networking way.
The invention uses the open-close type current transformer, which determines that the open-close type current transformer is not required to be connected in series at the power supply end of the instrument and is directly sleeved on the power supply phase line, thereby not causing any change of the instrument and carrying out power-off operation on the instrument, and simultaneously, the invention uses the aviation plug to carry out electric connection and has convenient installation.
The invention collects and alarms the ultra-large current signal of the hundred-ampere level in real time, and uploads the current value data and the alarm information to the remote instrument monitoring system, thereby realizing the networking monitoring.
Description of the drawings:
FIG. 1 is a schematic diagram of the structure of the product.
Fig. 2 is a schematic diagram of the inside of the box of the ultra-large current monitor of the product.
Fig. 3 is a circuit diagram of a main control module in the product controller.
Fig. 4 is a circuit diagram of a wired communication module in the product controller.
Fig. 5 is a circuit diagram of a wireless communication module in the product controller.
Fig. 6 is a circuit diagram of the relay module of the product controller.
FIG. 7 is a circuit diagram of a power supply module in the product controller
Like symbols in the circuit diagram have a connection relationship.
The specific embodiment is as follows:
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
Example 1:
The ultra-large current monitor comprises a current transformer 1 and a box body 2, wherein the current transformer is arranged on the outer side of the box body, an ammeter 3, a controller 4, an alarm device 5, a power module 6 and a knob 7 are arranged in the box body, the signal input end of the ammeter is connected with the signal output end of the current transformer, the communication end of the controller is connected with the communication end of the ammeter, the alarm device is connected with the control end of the controller, and the power module is connected with the ammeter, the controller and the alarm device; the knob enables and disables the alarm device.
Example 2:
The extra-large current monitor of embodiment 1, wherein the current transformer converts a hundred-ampere level current signal of a power supply cable of a tested instrument into a plurality of ampere level current signals and outputs the ampere level current signals to the ammeter, and the controller continuously reads current value data in the ammeter and uploads the current value data to a remote instrument monitoring system through a wireless communication module in the controller; the controller judges the read current value, alarms the current exceeding the set threshold value, and uploads the alarm information to the remote instrument monitoring system.
Example 3:
The extra-large current monitor of embodiment 1, wherein the current transformers are open-close type, and are directly sleeved on an instrument power supply phase line during installation, and the number of the current transformers is 1-3; the ammeter is a three-phase digital display ammeter with a wired communication interface, the controller reads the data of the current value through the interface, and the three-phase digital display ammeter displays the current value in real time; the current transformer is electrically connected with the ammeter at the bottom of the box body through an aviation plug; the controller comprises a main control module, a wired communication module, a wireless communication module, a relay module and a power supply module, wherein the controller communicates with the ammeter through the wired communication module, communicates with the remote instrument monitoring system through the wireless communication module and controls the alarm device through the relay module; the alarm device is an audible and visual alarm, and is enabled and disabled by the knob, and is controlled by the controller during enabling.
Example 4:
Embodiment 3 an extra large current monitor, the relay module include chip U6, chip U6's No. 8 pin connect electric capacity C15, chip U6's No. 5 pin connect contactor K1, chip U6's No. 1 pin connect relay K1.
Example 5:
the extra-large current monitor of embodiment 3, wherein the wired communication module is an RS485 wired communication module, the wired communication module includes a chip U5, and a pin 12 and a pin 13 of the chip U5 are connected to a resistor R11.
Example 6:
Embodiment 3 an extra large current monitor, the main control module include chip U4, chip U4's 6 number pin and 7 number pin all connect crystal oscillator Y1, crystal oscillator Y1's one end connect electric capacity C11, crystal oscillator Y1's the other end connect electric capacity C12, chip U4's 24 number pin connecting resistor 16 and resistance 15, chip U4's 25 number pin connecting resistor 9, chip U4's 29 number pin connecting resistor 10, chip U4's 8 number pin connecting plug connector P2, plug connector P2 connecting resistor R5, resistance R6, resistance R8, chip U4's 44 number pin, 41 number pin all connect electric capacity C13, electric capacity C13 shunt capacitance C14, chip U4's 39 number pin connecting plug connector P3, plug connector P3 connecting resistor R7 and electric capacity C10, resistance R7 parallel diode D2.
Example 7:
Embodiment 3 an extra large current monitor, the wireless communication module include chip Z1, no. 10 pin connecting resistor R14 of chip Z1, no. 4 pin connecting resistor R13 of chip Z1, resistor R14 connect resistance R13, no. 20 pin connecting capacitor C16 of chip Z1, no. 28 pin connecting resistor R12 of chip Z1.
Example 8:
The extra-large current monitor of embodiment 6, the power supply module further includes a chip U2, pin 1 of the chip U2 is connected to the chip U1 and the chip U3, pin 11 and pin 9 of the chip U1 are both connected to the inductor L1, pin 1 and pin 3 of the chip U2 are both connected to the capacitor C7, pin 5 of the chip U2 is connected to the capacitor C8, pin 1 and pin 2 of the chip U3 are connected to the capacitor C6, and pin 3 and pin 4 of the chip U3 are connected to the capacitor C9; the chip U1's 12 number pin connect diode D1, diode D1 connect insurance resistance F1, insurance resistance F1 connect plug connector P1, chip U1's 14 number pin connecting resistance R3, chip U1's 3 number pin connecting capacitance C5, chip U1's 12 number pin connecting capacitance C2 and electric capacity C1, electric capacity C2 parallel connection electric capacity C1, chip U1's 14 number pin connecting resistance R3, chip U1's 7 number pin connecting resistance R1, resistance R2, electric capacity C3, electric capacity C4, resistance R1 connecting resistance R4.
Example 9:
According to the ultra-large current monitor, the current transformer converts the hundred-ampere-level current signal of the power supply cable of the tested instrument into the individual ampere-level current signal and outputs the individual ampere-level current signal to the ammeter. The controller continuously reads the current value data in the ammeter and uploads the current value data to the remote instrument monitoring system through a wireless communication module in the controller. And meanwhile, the controller judges the read current value, alarms the current exceeding the set threshold value, and uploads the alarm information to a remote instrument monitoring system.
The current transformer is open-close type, and is directly sleeved on a A, B, C phase line of instrument power supply during installation, so that the instrument is prevented from being powered off.
The ammeter is a three-phase digital display ammeter with an RS485 communication interface, the controller reads the data of the current value through the interface, and a display screen of the ammeter passes through a window on a door plate of the box body to face outwards, so that A, B, C three-phase current values are displayed in real time.
The current transformer and the ammeter are electrically connected at the bottom of the box body through the aviation plug, so that quick plug is realized, and the on-site deployment time is saved.
The controller comprises an MCU module, an RS485 module, a Zigbee module, a relay module and a power supply module, and is in wired communication with the ammeter through the RS485 module, and is in wireless communication with a remote instrument monitoring system, and the alarm device is controlled through the relay module.
The alarm device is an audible and visual alarm, the luminous end of the alarm device penetrates through a window on a door plate of the box body to face outwards, the alarm is enabled when the knob is at a normal position, the alarm is controlled by the controller, the alarm is disabled when the knob is at a maintenance position, and an alarm function is closed.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be noted that several equivalent substitutions and modifications can be made by those skilled in the art without departing from the principles of the present invention, which equivalent substitutions and modifications shall also be made to the scope of the present invention.
Claims (1)
1. The oversized current monitor comprises a current transformer and a box body, and is characterized in that the current transformer is arranged on the outer side of the box body, an ammeter, a controller, an alarm device, a power module and a knob are arranged in the box body, a signal input end of the ammeter is connected with a signal output end of the current transformer, a communication end of the controller is connected with a communication end of the ammeter, the alarm device is connected with a control end of the controller, and the power module is connected with the ammeter, the controller and the alarm device; the knob enables and disables the alarm device;
The current transformer converts a hundred-ampere level current signal of a power supply cable of the tested instrument into a plurality of ampere level current signals and outputs the ampere level current signals to the ammeter, and the controller continuously reads the current value data in the ammeter and uploads the current value data to a remote instrument monitoring system through a wireless communication module in the controller; the controller judges the read current value, alarms the current exceeding a set threshold value, and uploads alarm information to the remote instrument monitoring system;
the current transformers are open-close type, and are directly sleeved on an instrument power supply phase line during installation, and the number of the current transformers is 1-3; the ammeter is a three-phase digital display ammeter with a wired communication interface, the controller reads the data of the current value through the interface, and the three-phase digital display ammeter displays the current value in real time; the current transformer is electrically connected with the ammeter at the bottom of the box body through an aviation plug; the controller comprises a main control module, a wired communication module, a wireless communication module, a relay module and a power supply module, wherein the controller communicates with the ammeter through the wired communication module, communicates with the remote instrument monitoring system through the wireless communication module and controls the alarm device through the relay module; the alarm device is an audible and visual alarm, and is enabled and disabled by a knob, and is controlled by the controller when enabled;
The relay module comprises a chip U6, wherein an No. 8 pin of the chip U6 is connected with a capacitor C15, a No. 5 pin of the chip U6 is connected with a contactor K1, and a No.1 pin of the chip U6 is connected with a relay K1;
The wired communication module is an RS485 wired communication module and comprises a chip U5, and a No. 12 pin and a No. 13 pin of the chip U5 are connected with a resistor R11;
The main control module comprises a chip U4, a No. 6 pin and a No. 7 pin of the chip U4 are both connected with a crystal oscillator Y1, one end of the crystal oscillator Y1 is connected with a capacitor C11, the other end of the crystal oscillator Y1 is connected with a capacitor C12, a No. 24 pin of the chip U4 is connected with a resistor 16 and a resistor 15, a No. 25 pin of the chip U4 is connected with a resistor 9, a No. 29 pin of the chip U4 is connected with a resistor 10, a No. 8 pin of the chip U4 is connected with a plug P2, a plug P2 is connected with a resistor R5, a resistor R6 and a resistor R8, a No. 44 pin and a No. 41 pin of the chip U4 are both connected with a capacitor C13, a capacitor C13 is connected with a capacitor C14 in parallel, a No. 39 pin of the chip U4 is connected with a plug P3, a plug P3 is connected with a resistor R7 and a capacitor C10, and a resistor R7 is connected with a diode D2 in parallel;
The wireless communication module comprises a chip Z1, a pin 10 of the chip Z1 is connected with a resistor R14, pins 1 and 4 of the chip Z1 are connected with a resistor R13, the resistor R14 is connected with the resistor R13, a pin 20 of the chip Z1 is connected with a capacitor C16, and a pin 28 of the chip Z1 is connected with a resistor R12;
The power supply module further comprises a chip U2, pins 1 of the chip U2 are connected with the chip U1 and the chip U3, pins 11 and 9 of the chip U1 are connected with the inductor L1, pins 1 and 3 of the chip U2 are connected with the capacitor C7, pins 5 of the chip U2 are connected with the capacitor C8, pins 1 and 2 of the chip U3 are connected with the capacitor C6, and pins 3 and 4 of the chip U3 are connected with the capacitor C9; the chip U1's 12 number pin connect diode D1, diode D1 connect insurance resistance F1, insurance resistance F1 connect plug connector P1, chip U1's 14 number pin connecting resistance R3, chip U1's 3 number pin connecting capacitance C5, chip U1's 12 number pin connecting capacitance C2 and electric capacity C1, electric capacity C2 parallel connection electric capacity C1, chip U1's 14 number pin connecting resistance R3, chip U1's 7 number pin connecting resistance R1, resistance R2, electric capacity C3, electric capacity C4, resistance R1 connecting resistance R4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910454152.1A CN110031669B (en) | 2019-05-29 | 2019-05-29 | Super-current monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910454152.1A CN110031669B (en) | 2019-05-29 | 2019-05-29 | Super-current monitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110031669A CN110031669A (en) | 2019-07-19 |
| CN110031669B true CN110031669B (en) | 2024-05-24 |
Family
ID=67243507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910454152.1A Active CN110031669B (en) | 2019-05-29 | 2019-05-29 | Super-current monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110031669B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2439405A1 (en) * | 1978-10-20 | 1980-05-16 | Gardy Sa | Three=phase transformer overload indicator - has current transformers and thermistors in each power line and uses heat produced to operate warning circuit |
| CN102680935A (en) * | 2012-04-25 | 2012-09-19 | 福建阳谷智能技术有限公司 | Intelligent current transformer system for online precision monitoring |
| CN204595099U (en) * | 2015-05-05 | 2015-08-26 | 成都电兴科技有限责任公司 | AC frequency conversion stake resistance on-line computing model |
| CN204695050U (en) * | 2015-06-01 | 2015-10-07 | 滨州学院 | A kind of supervisory system of equipment running status |
| CN205017002U (en) * | 2015-04-15 | 2016-02-03 | 国家电网公司 | Current transformer protection device with long -range SMS alarming function |
| KR20160025227A (en) * | 2014-08-27 | 2016-03-08 | 주식회사유성계전 | multi ground detector for AC and DC |
| KR101773897B1 (en) * | 2016-06-07 | 2017-09-12 | 제주국제대학교 산학협력단 | Monitoring and alarm system for current |
| CN206906462U (en) * | 2017-06-14 | 2018-01-19 | 深圳盛世融和科技有限公司 | A kind of three phase electric machine current monitoring device |
| CN207976523U (en) * | 2018-01-25 | 2018-10-16 | 贵州电网有限责任公司 | Ice-melt transformer current monitor |
| CN210376496U (en) * | 2019-05-29 | 2020-04-21 | 上海基理网络科技有限公司 | Super large current monitor |
-
2019
- 2019-05-29 CN CN201910454152.1A patent/CN110031669B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2439405A1 (en) * | 1978-10-20 | 1980-05-16 | Gardy Sa | Three=phase transformer overload indicator - has current transformers and thermistors in each power line and uses heat produced to operate warning circuit |
| CN102680935A (en) * | 2012-04-25 | 2012-09-19 | 福建阳谷智能技术有限公司 | Intelligent current transformer system for online precision monitoring |
| KR20160025227A (en) * | 2014-08-27 | 2016-03-08 | 주식회사유성계전 | multi ground detector for AC and DC |
| CN205017002U (en) * | 2015-04-15 | 2016-02-03 | 国家电网公司 | Current transformer protection device with long -range SMS alarming function |
| CN204595099U (en) * | 2015-05-05 | 2015-08-26 | 成都电兴科技有限责任公司 | AC frequency conversion stake resistance on-line computing model |
| CN204695050U (en) * | 2015-06-01 | 2015-10-07 | 滨州学院 | A kind of supervisory system of equipment running status |
| KR101773897B1 (en) * | 2016-06-07 | 2017-09-12 | 제주국제대학교 산학협력단 | Monitoring and alarm system for current |
| CN206906462U (en) * | 2017-06-14 | 2018-01-19 | 深圳盛世融和科技有限公司 | A kind of three phase electric machine current monitoring device |
| CN207976523U (en) * | 2018-01-25 | 2018-10-16 | 贵州电网有限责任公司 | Ice-melt transformer current monitor |
| CN210376496U (en) * | 2019-05-29 | 2020-04-21 | 上海基理网络科技有限公司 | Super large current monitor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110031669A (en) | 2019-07-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104716741B (en) | Transformer station's remote supervision system and remote monitoring method thereof | |
| CN204241594U (en) | A kind of real-time monitoring system for substation transformer operating condition | |
| CN205377094U (en) | Special block terminal of smart power grids | |
| CN102768075B (en) | Temperature early-warning centralized display system | |
| CN208059944U (en) | Substation's remote intelligent monitoring system based on PLC | |
| CN212874961U (en) | Safe power consumption intelligence picture peg based on internet of things | |
| CN210376496U (en) | Super large current monitor | |
| CN106557045A (en) | Power line | |
| CN110031669B (en) | Super-current monitor | |
| CN101359843A (en) | Switch cupboard monitoring management apparatus | |
| CN110865703A (en) | Power distribution unit PDU and cabinet power monitoring system | |
| CN214674323U (en) | Special intelligent electronic box for dormitory of colleges and universities | |
| CN102798416A (en) | Monitoring system for power environment in machine room | |
| CN202679077U (en) | Intelligent power distribution cabinet remote control device | |
| CN212229020U (en) | Three-phase safety electric meter | |
| CN214409153U (en) | Operating state monitor for oil fume purifier | |
| CN210720559U (en) | Intelligent station bus secondary voltage monitoring device | |
| CN203014490U (en) | Intelligent monitor of transformer substation | |
| CN202758231U (en) | Monitoring system for power environment in machine room | |
| CN201260092Y (en) | Switch cupboard monitoring management apparatus | |
| CN205104993U (en) | Building electrical safety monitoring system | |
| CN106768405A (en) | Power line | |
| CN220627258U (en) | Thing allies oneself with real platform of instructing | |
| CN208752132U (en) | A kind of ring network cabinet power failure alarm device | |
| CN203587137U (en) | Wireless temperature and humidity sensor for auxiliary control system of intelligent transformer station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |