CN100449893C - Low-voltage distribution cabinet with display control panel - Google Patents

Low-voltage distribution cabinet with display control panel Download PDF

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CN100449893C
CN100449893C CNB2005100956887A CN200510095688A CN100449893C CN 100449893 C CN100449893 C CN 100449893C CN B2005100956887 A CNB2005100956887 A CN B2005100956887A CN 200510095688 A CN200510095688 A CN 200510095688A CN 100449893 C CN100449893 C CN 100449893C
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picture
low
processing unit
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CN1776977A (en
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林琳
张焱
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Zhejiang Chuangli Electronics Co Ltd
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Abstract

The present invention relates to a low-voltage distribution cabinet, particularly to a low-voltage distribution cabinet capable of using a pattern form and a cartoon form to display an internal distribution structure and a working state, which comprises a housing (1), an air switch (6) arranged in the housing (1), a current transformer (2), a circuit breaker (4) and other electric elements. The present invention is characterized in that the low-voltage distribution cabinet is also provided with a pattern displaying device, a data collecting unit for acquiring the real-time state information of a distribution system, and a central processing unit. Because the low-voltage distribution cabinet is also provided with the pattern displaying device, the data collecting unit for acquiring the real-time state information of the distribution system, and the central processing unit, the data collecting unit acquires the real-time state information of the distribution system under the control of the central processing unit, the pattern displaying device can visually display the distribution line structure of the low-voltage distribution cabinet and can display the real-time state information and the numerical values of each switching value and various electric quantities in the distribution cabinet in real time at any time.

Description

The low-voltage distribution cabinet that has display control panel
Technical field
The present invention relates to low-voltage distribution cabinet, especially can show the low-voltage distribution cabinet of interior distribution structure and operating state with the form of picture and text and animation.
Background technology
The development of modern industrial technology is had higher requirement to low-voltage distribution system reliability of operation and intelligent management thereof, and the increasing substantially of the extensive use of microprocessor technology and computer system security, intelligent low voltage component is rapidly developed, and intelligent low-voltage electrical management system is arisen at the historic moment.With respect to the development of the integrated protection of 6kV and above mesohigh system and system monitoring (SCADA system) and in application on power system, as the low voltage switchgear of direct intended for end consumers, its Study of intelligent and application are started late.The existing intelligent monitoring system that much is applied to low pressure is to make amendment on the SCADA system-based basically, can satisfy basic monitoring function, but can not demonstrate fully the characteristics and the requirement of low-voltage electric system, monitoring function imperfection, maintenance, management inconvenience.
Summary of the invention
The objective of the invention is to provides a kind of low-voltage distribution cabinet that has display control panel for the defective that overcomes existing low-voltage distribution cabinet monitoring function imperfection, maintenance, management inconvenience.
For solving the problems of the technologies described above, the technical solution that the present invention taked is: have the low-voltage distribution cabinet that shows control flow, comprise housing, be arranged on air switch, current transformer, circuit breaker in the housing, it is characterized in that: described low-voltage distribution cabinet also is provided with:
Picture and eassay display device, be used to obtain the data acquisition unit and the CPU of distribution system real-time status information,
Described CPU is a core with the microprocessor that has control program, the data of reading command input unit and data acquisition unit under the control of internal control program, the corresponding video data of output shows for picture and eassay display device in the display buffer memory after treatment;
Described picture and eassay display device comprises graphic display screen, and picture and eassay display device is presented at display buffer memory content on the graphic display screen with expression low-voltage distribution cabinet interior distribution line construction and real-time status with picture and text or animated;
Described data acquisition unit is finished the real-time data acquisition to alterating and direct current parameter and switching value signal by the analog-to-digital conversion integrated chip;
Described CPU comprises:
Be used for input instruction information instruction input unit and be used to store the input memory of the information of importing through described instruction input unit;
Be used to store the picture and text memory of the graphics and text library of the glyph image of representing various distribution elements and literal;
Be used to store the display buffer memory of instant playback content;
The real-time status memory that is used for the distribution system real-time status information that the stored data collecting unit obtained;
Be used for comparator that described real-time status memory content and described display buffer memory and input memory content are compared and the comparison memory that is used to store comparator output result;
By the selector of described comparator output signal control, this selector is made following selection according to the described relatively content of memory: it is constant or take out required picture and text and send into the display buffer memory and refresh displaying contents from the picture and text memory to keep display buffer memory content.
Because low-voltage distribution cabinet also is provided with picture and eassay display device, is used to obtain the data acquisition unit and the CPU of distribution system real-time status information, data acquisition unit obtains distribution system real-time status information under central processing unit controls, picture and eassay display device can show the distribution line structure of low-voltage distribution cabinet, very directly perceived, and the real-time status information and the numerical value that can show interior each switching value of power distribution cabinet and various electric weight at any time in real time safeguard for monitoring and maintenance provides great convenience.
The invention will be further described below in conjunction with drawings and Examples
Description of drawings
Accompanying drawing 1 is a specific embodiment of the invention schematic appearance;
Accompanying drawing 2 is a specific embodiment of the invention internal structure schematic diagram;
Accompanying drawing 3 is the specific embodiment of the invention 1 picture and eassay display device, data acquisition unit and CPU part-structure block diagram;
Accompanying drawing 4 is the specific embodiment of the invention 2 picture and eassay display devices, data acquisition unit and CPU part-structure block diagram;
Accompanying drawing 5 is a specific embodiment of the invention flow chart.
Embodiment
Specific embodiment 1: as shown in Figure 1, 2, the low-voltage distribution cabinet that has display control panel still has the identical rectangular housing of conventional low power distribution cabinet 1, inside is equipped with air switch 6, current transformer 2, lightning protection circuit breaker 4, three-way mains switch 3 and fuse 7, also be provided with image-text displaying system, image-text displaying system comprises picture and eassay display device and CPU.CPU is a core with the microprocessor that has control program, the data of reading command input unit and data acquisition unit under the control of internal control program are exported corresponding video data to picture and eassay display device after treatment and are shown for picture and eassay display device; As shown in Figure 3, CPU comprises: be used for input instruction information instruction input unit and be used to store the input memory of the information of importing through described instruction input unit; Be used to store the picture and text memory of the graphics and text library of the glyph image of representing various distribution elements and literal, also have the distribution line structural image data of this low-voltage distribution cabinet in the picture and text memory; Be used to store the display buffer memory of instant playback content; The real-time status memory that is used for the distribution system real-time status information that the stored data collecting unit obtained; Be used for comparator that described real-time status memory content and described display buffer memory and input memory content are compared and the comparison memory that is used to store comparator output result; By the selector of described comparator output signal control, this selector is made following selection according to the described relatively content of memory: it is constant or take out required picture and text and send into the display buffer memory and refresh displaying contents from the picture and text memory to keep display buffer memory content.For CPU and whole system compactness simple for structure, it is core that CPU preferably adopts 32 microprocessors, as X86 series or i386EX family chip, to guarantee to have enough powerful data-handling capacity and memory size, input memory, picture and text memory, display buffer memory, real-time status memory and comparison memory can be served as by the microprocessor internal memory.Data acquisition unit can be provided with according to required function, data acquisition unit is provided with the d. c. voltage signal sampler in this specific embodiment, the dc current signal sampler, the switching value signal monitoring device, three-phase alternating current signal sampling device and AD conversion unit and photoelectricity isolated location, respectively in real time to the dc voltage and current signal, the sampling of three-phase alternating voltage current signal, to air switch 6, switching values such as circuit breaker 4 are monitored, certainly data acquisition unit also can increase and decrease corresponding sampling unit according to required function, AD conversion unit is preferably selected the analog-to-digital conversion integrated chip of commercially available maturation for use, AD conversion unit is arranged in the data transmission channel between three-phase alternating current signal sampling device and the CPU, at the d. c. voltage signal sampler, be provided with AD conversion unit and photoelectricity isolated location in the data transmission channel between dc current signal sampler and the CPU, voltage and current signal is input to after AD conversion unit is converted to digital quantity in the CPU, is provided with the photoelectricity isolated location in the data transmission channel between switching value signal monitoring device and CPU to improve antijamming capability.
Specific embodiment 2: certainly, in order to improve processing speed, simplify circuit, CPU also is provided with two microprocessors respectively as real-time data acquisition processing unit and demonstration and communication processing unit core, as shown in Figure 4, wherein demonstration and communication processing unit comprise: be used for input instruction information instruction input unit and be used to store the input memory of the information of importing through described instruction input unit; Be used to store the picture and text memory of the graphics and text library of the glyph image of representing various distribution elements and literal; Be used to store the display buffer memory of instant playback content; Be used for comparator that described real-time status memory content and described display buffer memory and input memory content are compared and the comparison memory that is used to store comparator output result; And by the selector of described comparator output signal control, this selector is made following selection according to the described relatively content of memory: it is constant or take out required picture and text and send into the display buffer memory and refresh displaying contents from the picture and text memory to keep display buffer memory content; The real-time data acquisition processing unit comprises: the real-time status memory that is used for the distribution system real-time status information that the stored data collecting unit obtained; Described data acquisition unit comprises the d. c. voltage signal sampler, the dc current signal sampler, the switching value signal monitoring device, three-phase alternating current signal sampling device and AD conversion unit and photoelectricity isolated location, AD conversion unit is arranged in the data transmission channel between three-phase alternating current signal sampling device and the real-time data acquisition processing unit, at the d. c. voltage signal sampler, be provided with AD conversion unit and photoelectricity isolated location in the data transmission channel between dc current signal sampler and the real-time data acquisition processing unit, be provided with the photoelectricity isolated location in the data transmission channel between switching value signal monitoring device and real-time data acquisition processing unit; Graphic display screen 9 is connected with the data output of demonstration and communication processing unit, the instruction input unit is connected with the data input port of demonstration and communication processing unit, is provided with the data communication mouth between demonstration and communication processing unit and the real-time data acquisition processing unit such as the RS232 communication port is connected.
Graphic display screen 9 can be selected LCD display for use in the above-mentioned specific embodiment, the instruction input unit adopts button 5 inputs, CPU can also be provided with the data communication mouth that is used for carrying out with host computer exchanges data in addition, for remote monitoring provides possibility, as RS485 communication port or ethernet communication mouth etc.
Low-voltage distribution cabinet is when operation, the initial data of at first taking out the distribution line structural images of this low-voltage distribution cabinet demonstrates the distribution line structural images of this low-voltage distribution cabinet on graphic display screen 9, then under the control of CPU internal control program, acquisition real-time status data are gathered and monitored to the real-time data acquisition processing unit regularly to the alterating and direct current parameter and the switching value signal of distribution system in the cabinet with the extremely short time interval, and the result delivered in the real-time status memory, again by relatively real-time status memory and display buffer memory content judge whether the state of distribution system changes, as change, then according to the state update displayed buffer storage content after changing, otherwise remain unchanged, then display buffer memory content is presented on the graphic display screen 9 with picture and text or animated, so goes round and begins again.

Claims (6)

1, have the low-voltage distribution cabinet that shows control flow, comprise housing (1), be arranged on air switch (6), current transformer (2), circuit breaker (4) in the housing (1), it is characterized in that: described low-voltage distribution cabinet also is provided with:
Picture and eassay display device, be used to obtain the data acquisition unit and the CPU of distribution system real-time status information,
Described CPU is a core with the microprocessor that has control program, the data of reading command input unit and data acquisition unit under the control of internal control program, the corresponding video data of output shows for picture and eassay display device in the display buffer memory after treatment;
Described picture and eassay display device comprises graphic display screen (9), and picture and eassay display device is presented at graphic display screen (9) with display buffer memory content with picture and text or animated and goes up with expression low-voltage distribution cabinet interior distribution line construction and real-time status;
Described data acquisition unit is finished the real-time data acquisition to alterating and direct current parameter and switching value signal by the analog-to-digital conversion integrated chip;
Described CPU comprises:
Be used for input instruction information instruction input unit and be used to store the input memory of the information of importing through described instruction input unit;
Be used to store the picture and text memory of the graphics and text library of the glyph image of representing various distribution elements and literal;
Be used to store the display buffer memory of instant playback content;
The real-time status memory that is used for the distribution system real-time status information that the stored data collecting unit obtained;
Be used for comparator that described real-time status memory content and described display buffer memory and input memory content are compared and the comparison memory that is used to store comparator output result;
By the selector of described comparator output signal control, this selector is made following selection according to the described relatively content of memory: it is constant or take out required picture and text and send into the display buffer memory and refresh displaying contents from the picture and text memory to keep display buffer memory content.
2, the low-voltage distribution cabinet that shows control flow that has according to claim 1, it is characterized in that: described data acquisition unit comprises the d. c. voltage signal sampler, the dc current signal sampler, the switching value signal monitoring device, three-phase alternating current signal sampling device and AD conversion unit and photoelectricity isolated location, AD conversion unit is arranged in the data transmission channel between three-phase alternating current signal sampling device and the CPU, at the d. c. voltage signal sampler, be provided with AD conversion unit and photoelectricity isolated location in the data transmission channel between dc current signal sampler and the CPU, be provided with the photoelectricity isolated location in the data transmission channel between switching value signal monitoring device and CPU, described instruction input unit is connected with the data input port of CPU, and described graphic display screen (9) is connected with the data output of CPU.
3, the low-voltage distribution cabinet that shows control flow that has according to claim 1 is characterized in that: described CPU is provided with two microprocessors respectively as real-time data acquisition processing unit and demonstration and communication processing unit core,
Described real-time data acquisition processing unit comprises:
The real-time status memory that is used for the distribution system real-time status information that the stored data collecting unit obtained;
Described demonstration and communication processing unit comprise:
Be used for input instruction information instruction input unit and be used to store the input memory of the information of importing through described instruction input unit;
Be used to store the picture and text memory of the graphics and text library of the glyph image of representing various distribution elements and literal;
Be used to store the display buffer memory of instant playback content;
Be used for comparator that described real-time status memory content and described display buffer memory and input memory content are compared and the comparison memory that is used to store comparator output result;
By the selector of described comparator output signal control, this selector is made following selection according to the described relatively content of memory: it is constant or take out required picture and text and send into the display buffer memory and refresh displaying contents from the picture and text memory to keep display buffer memory content;
Described data acquisition unit comprises the d. c. voltage signal sampler, the dc current signal sampler, the switching value signal monitoring device, three-phase alternating current signal sampling device and AD conversion unit and photoelectricity isolated location, AD conversion unit is arranged in the data transmission channel between three-phase alternating current signal sampling device and the real-time data acquisition processing unit, at the d. c. voltage signal sampler, be provided with AD conversion unit and photoelectricity isolated location in the data transmission channel between dc current signal sampler and the real-time data acquisition processing unit, be provided with the photoelectricity isolated location in the data transmission channel between switching value signal monitoring device and real-time data acquisition processing unit; Described graphic display screen (9) is connected with the data output of demonstration and communication processing unit, described instruction input unit is connected with the data input port of demonstration and communication processing unit, is provided with the data communication mouth between described demonstration and communication processing unit and the real-time data acquisition processing unit and is connected.
4, according to claim 1 or the 2 or 3 described low-voltage distribution cabinets that show control flow that have, it is characterized in that: described CPU also is provided with the data communication mouth that is used for carrying out with host computer exchanges data.
5, according to claim 1 or the 2 or 3 described low-voltage distribution cabinets that show control flow that have, it is characterized in that: described graphic display screen (9) is LCD display.
6, the low-voltage distribution cabinet that shows control flow that has according to claim 4 is characterized in that: described graphic display screen (9) is a LCD display.
CNB2005100956887A 2005-11-23 2005-11-23 Low-voltage distribution cabinet with display control panel Active CN100449893C (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102237716A (en) * 2010-05-07 2011-11-09 中冶长天国际工程有限责任公司 Low-voltage power distribution system and low-voltage power distribution box

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06295166A (en) * 1993-04-09 1994-10-21 Toshiba Corp Screen division display device
CN2198694Y (en) * 1994-04-22 1995-05-24 孟祥明 Programmable central control desk for transformer station
EP0600073B1 (en) * 1992-06-19 2000-09-06 Square D Company Computer-controlled circuit breaker energy management arrangement having reliable memory and clock
CN2588634Y (en) * 2002-11-20 2003-11-26 沙万乾 Intelligent electricity distribution cabinet
US20040052040A1 (en) * 2001-02-22 2004-03-18 Sven Laurosch Switch cupboard or switch cupboard arrangement comprising a monitoring device arranged therein
CN2687912Y (en) * 2004-02-26 2005-03-23 武汉江北开关有限责任公司 Intelligent low-voltage box type converting station
CN2865081Y (en) * 2005-11-23 2007-01-31 林琳 Low-voltage distribution cabinet with display control panel

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0600073B1 (en) * 1992-06-19 2000-09-06 Square D Company Computer-controlled circuit breaker energy management arrangement having reliable memory and clock
JPH06295166A (en) * 1993-04-09 1994-10-21 Toshiba Corp Screen division display device
CN2198694Y (en) * 1994-04-22 1995-05-24 孟祥明 Programmable central control desk for transformer station
US20040052040A1 (en) * 2001-02-22 2004-03-18 Sven Laurosch Switch cupboard or switch cupboard arrangement comprising a monitoring device arranged therein
CN2588634Y (en) * 2002-11-20 2003-11-26 沙万乾 Intelligent electricity distribution cabinet
CN2687912Y (en) * 2004-02-26 2005-03-23 武汉江北开关有限责任公司 Intelligent low-voltage box type converting station
CN2865081Y (en) * 2005-11-23 2007-01-31 林琳 Low-voltage distribution cabinet with display control panel

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