CN201069852Y - A computer protection device - Google Patents
A computer protection device Download PDFInfo
- Publication number
- CN201069852Y CN201069852Y CNU2007201494381U CN200720149438U CN201069852Y CN 201069852 Y CN201069852 Y CN 201069852Y CN U2007201494381 U CNU2007201494381 U CN U2007201494381U CN 200720149438 U CN200720149438 U CN 200720149438U CN 201069852 Y CN201069852 Y CN 201069852Y
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- microcomputer protecting
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Abstract
The utility model is a microcomputer protecting device, comprising a crate; a liquid crystal display arranged in the front panel of the crate, providing input and output interfaces to display the running status of the device, and the liquid crystal display comprises a liquid crystal module and a control circuit board; four plug-in units including a power board, a processor board, a relay board and a mutual inductor board, wherein all the plug-in units are sequentially inserted from the back of the crate; a motherboard for connecting various signals and fixing plug-in units, which is arranged at the forehead of the crate and between the liquid crystal display and the plug-in units; a back panel for sealing the crate and fixing the plug-in units and wire terminals, which is arranged at the back of the crate; thereby the utility model is applicable to middle and low pressure transformer stations and power distributing and transforming plants.
Description
Technical field
The utility model relates to a kind of electronic protection, particularly be in a kind of being applicable to, the microcomputer protecting device in low pressure transformer station and Allocation transformer place.
Background technology
For the demand of modern chemical industry agricultural development, the effect of electric power is self-evident, thereby the power plant is transported to the range transformer that uses in the power transmission network of electricity consumption place, need obtain safeguard protection; Therefore the technology of Microcomputer Protection is arisen at the historic moment, and there is following advantage in it
(1) reliability height: kinds of protect and monitoring function can be finished in a kind of Microcomputer Protection unit.Replace kinds of protect relay and measuring instrument, simplified the wiring of switch cubicle and control flow, thereby reduced the failsafe link of relevant device, improved reliability.The Microcomputer Protection unit adopts the chip of high integration, and software has automatic detection and automatic error correction function, and the reliability that has improved protection is also arranged;
(2) precision height, speed is fast, and function is many.The measure portion digitlization improves its precision greatly.CPU speed improves can make variety of event come timing with ms, and the raising of software function can be finished the kinds of protect function by various complicated algorithm;
(3) flexibility is big, can change protection and control characteristic very easily by software, utilizes logic determines to realize various interlockings, and a kind of type of hardware is utilized different software, can constitute dissimilar protections;
(4) safeguard debugging conveniently, the hardware kind is few, the circuit unification, and external cabling is simple, has significantly reduced maintenance workload, and the protection debugging is imported to transmit under button or the top computer with the utilization of adjusting and is carried out, and debugs simple and convenient;
(5) good economy performance, ratio of performance to price height is because the multifunctionality of Microcomputer Protection reduces the comprehensive cost of transformer and distribution power station measurement, control and protection part.High reliability can reduce interruption duration with high-speed, saves manpower, has improved economic benefit.
But still there are some defectives in existing microcomputer protecting device: what adopt as existing microcomputer protecting device is front inserting, and antijamming capability is not strong; What adopt is that the charactron letter shows that interactive capability is poor; What adopt is the mode of connection of colding pressing, line inconvenience etc.
For overcoming above-mentioned defective, the utility model creator obtains this creation finally through long term studies and test.
Summary of the invention
The purpose of this utility model is, a kind of microcomputer protecting device is provided, in order to overcome above-mentioned defective.
For achieving the above object, the technical solution adopted in the utility model is, a kind of microcomputer protecting device is provided, and it comprises:
One cabinet; One LCD is arranged at described case front panel inside, the input of its generator, output interface, and the state of display operation, described LCD comprises Liquid Crystal Module and control circuit board;
Four plug-in units comprise: power panel, processor plate, relay board and instrument transformer plate, described plug-in unit all are to be inserted in regular turn by the cabinet rear portion; One motherboard is used to connect the effect of various signals and fixing pluge, and it is positioned at the front portion of cabinet, between LCD and plug-in unit; One rear board is used for closed case, fixing pluge and binding post, and it is arranged at the rear portion of described cabinet;
Preferable, described cabinet comprises: front panel, casing, barricade, back shroud, and it has fixing, as to protect inner each plug-in unit and electromagnetic shielding effect as the supporting structure of electric components;
Preferable, it provides working power for whole device described power panel, and it links to each other with external electrical network, and links to each other with described processor plate, and the electric energy that transforms is passed to it;
Described processor plate is handled acquired signal, its with described LCD, relay board is electrically connected to them that control signal is provided, and accepts operation signal by instrument transformer plate, network or LCD simultaneously;
Preferable, it comprises described processor plate: monitoring CPU circuit, protection cpu circuit and 96 pin change-over circuits, described CPU is two, a slice is finished the CPU of defencive function, the CPU that a slice is finished monitoring function, and described CPU and the described CPU that finishes monitoring function that finishes defencive function carries out exchanges data by the I2C bus;
Preferable, comprise also on the control circuit board of described LCD that a slice finishes the CPU of Presentation Function, describedly finish monitoring function CPU and finish Presentation Function CPU and be connected by serial communication mode;
Preferable, described power panel comprises: switching value input circuit and power converting circuit and 96 pin change-over circuits, and it is electrically connected described switching value input circuit with described processor plate, the level signal that becomes CPU to discern the switch state of outside; Described power converting circuit is importing power supply through conversion, for described protected device provides power supply;
Preferable, also comprise a photoelectric isolating device, be arranged on the described power panel, the input signal and the output signal of switching value are kept apart;
Preferable, described instrument transformer plate comprises: circuit board, transformer circuit and 96 pin change-over circuits; Described transformer circuit is welded on the described circuit board, and described transformer circuit comprises: big current terminal is electrically connected with instrument transformer, and described instrument transformer is electrically connected with described 96 pin change-over circuits;
Preferable, 12 at the most of described instrument transformers;
Preferable, described relay board comprises: outlet circuit, driving and holding circuit, control loop monitoring circuit and 96 pin change-over circuits, it all is electrically connected with described 96 pin European plugs, described driving and holding circuit all are electrically connected with described relay, receive control signal that described CPU produces and through amplifying the rear drive actuating of relay, relay output node control peripheral operation circuit;
Advantage of the present utility model is, antijamming capability is strong, man-machine interaction is convenient, patch is convenient, easy to operate, running status is clear and definite, Chinese character shows that indicator light and large-screen lc demonstration match, the running status of judgment means, low in energy consumption fast and accurately, be fit to the long-time continuous operation, do not need to consider ventilation or cooling, intelligent high, can remember logout, failure logging, real-time teletransmission service data, multiple functional, the complete series device can be contained transformer station's all functions requirement.
Description of drawings
Fig. 1 is the STRUCTURE DECOMPOSITION schematic diagram of the utility model microcomputer protecting device;
Fig. 2 is the circuit function structured flowchart of the utility model protector;
Fig. 3 is the circuit structure diagram of the processor plate of the utility model protector;
Fig. 4 is the circuit structure diagram of the power panel of the utility model protector;
Fig. 5 is the circuit structure diagram of the relay board of the utility model protector;
Fig. 6 is the circuit structure diagram of the instrument transformer plate of the utility model protector.
Embodiment
Below in conjunction with accompanying drawing, to this novel above-mentionedly is described in more detail with other technical characterictic and advantage.
See also shown in Figure 1; it is the STRUCTURE DECOMPOSITION schematic diagram of the utility model microcomputer protecting device; it comprises; one cabinet; it comprises is made by metal material: front panel 11, casing 13, barricade 12, back shroud 14; as the supporting structure of electric components, mainly play effect fixing, inner each plug-in unit of protection, the electric effect of electromagnetic shielding is also arranged simultaneously.Whole cabinet good looking appearance, structure be clean and tidy, it is tight to cooperate; Cabinet casing and back version are processed into by aluminium section bar, and preceding edition is a die casting, all are metal material, and closely contact, and good electromagnetic shielding action is arranged, and are fit to be applied in the stronger environment of electromagnetic interference; PROCESS FOR TREATMENT such as cabinet outer surface process is sprayed paint, brilliant erosion, corrosion-resistant, oxidation can be applied in the hygrothermal environment; One liquid crystal line display 2 is arranged at described case front panel 11 inside, the input of its generator, output interface, and the state of display operation, described LCD comprises Liquid Crystal Module and control circuit board; Four plug-in units are watched from rear side, are respectively power panel 44, processor plate 43, relay board 42 and instrument transformer plate 41 from left to right, and it all is to be inserted by the cabinet rear portion, are connected by European plugs with motherboard and fix;
One motherboard 3 is used to connect the effect of various signals and fixing pluge, it is positioned at the front portion of cabinet, between LCD 2 and plug-in unit, 4 96 pin European plugs are housed on the described motherboard 3 to be electrically connected with 96 pin change-over circuits on four cards respectively, each plug can be communicated with the electric signal between each plug-in unit with after socket on being installed in plug-in unit links to each other;
One rear board 14 is used for closed case, fixing described plug-in unit and binding post, and it is arranged at the rear portion of described cabinet;
Connect by rotating shaft 131 between case front panel 11 and the casing 13, and can pivot more than 90 degree, the two closed back makes it fixing by screw of side; Rear board 14 is embedded in the cabinet rear portion, passes through screw.When cabinet is installed to the screen cabinet, insert special guide rail bar at the screen cabinet back side from both sides, cabinet rear portion, screw with screw then, can make cabinet be fixed on screen cashier's office in a shop.Can open machine box door in screen cabinet front, debug operation of LCD, can dismantle rear board, change operations such as plug-in unit at the screen cabinet back side.
See also shown in Figure 2, it is the circuit function structured flowchart of the utility model protector, its core is exactly described 4 plug-in units, external input signal (analog quantity and switching value) is converted into the signal that CPU can discern by the processing of instrument transformer plate 41 and power panel 44 circuit, this signal passes on the processor plate 43 by the switching of backboard 5, pass through filtering then, amplify, circuit such as selection have been passed to CPU, CPU calculates the back to the input signal that collects through preset program numerical value is deposited in the memory, according to the predetermined logical relation of program evaluation and setting value are compared then, if satisfy the terms and conditions that logical relation is provided with, then processor plate 43 can send a signal, this signal is through amplifying, filtering is after relay board 42 is passed in the backboard switching, relay board 42 can drive the actuating of relay after receiving signal, thereby connection external circuit, and corresponding indicator light on the lamp device panel; If can not satisfy the terms and conditions that logical relation is provided with, then the working procedure of processor plate 43 can turn back to the collection status input signal, recomputates the data that next time period gathers and remakes logic analysis then, goes round and begins again, from uninterruptedly.
Two cpu chips are arranged in processor plate 43 circuit; each can both obtain above-described input signal; one of them (protection CPU) is according to top description running; the drive manner of another (monitoring CPU) is then different; the data that it calculates do not participate in logic analysis; but data are made to be reduced into after the suitable analysis raw value of sampling; and pass to LCD 2 on the front panel 11; the LCD 2 of like this, just can uniting is checked the numerical value or the main line numerical value of actual input easily.Simultaneously, monitoring CPU can be passed to communication CPU to packing data, and communication CPU can be put into data on the CAN communication network according to preset program, and like this, back-stage management machine (main website) just can just receive the data on the device.
Turn round needed setting value of protection CPU exists in the memory, and this memory has the characteristic of not losing legacy data after the power down, can avoid re-entering setting value after the device power down.The mode that deposits setting value to device in has two kinds, and a kind of is that another kind is to import from main website by network by the input of the button on the front panel 11.
Different from instrument transformer plate 41 with the signal kinds of power panel 44 inputs; the analytical method of program and decision logic also can be inequality; like this; by the simple more program chip of changing device; just can on same hardware platform, realize different types of protection, monitoring function; such as, protection, the monitoring function of kinds such as realization circuit, transformer, reactor, capacitor, bus, motor, generator.
See also shown in Figure 3, it is the circuit structure diagram of the processor plate of the utility model protector, it comprises described processor plate: monitoring CPU circuit 431, protection cpu circuit 432 and 96 pin change-over circuits 433, described CPU is two, a slice is finished the CPU of defencive function, the CPU that a slice is finished monitoring function, and described CPU and the described I2C bus of passing through of finishing monitoring function CPU of finishing defencive function carried out exchanges data; Comprise also on the control circuit board of described LCD 2 that a slice finishes the CPU of Presentation Function (not looking among the figure), describedly finish monitoring function CPU and finish Presentation Function CPU and be connected by serial communication mode.
See also shown in Figure 4ly, it is the circuit structure diagram of the power panel of the utility model protector; It provides working power for whole device, it comprises: switching value input circuit 442 and power converting circuit 443 and 96 pin change-over circuits 441 are formed, the level signal (5V or 0V) that switching value input circuit 442 becomes CPU to discern the switch state of outside; Power converting circuit 443 converts input power supply (AC/DC220) to 5V and 12V power supply.The power supply of DC220V, DC110V switching value is provided by the outside, and DC24V power panel 44 thus provides, and the electric pressure of access can be selected arbitrarily from DC220V, DC110V, DC24V.The input signal and the output signal of switching value are isolated by photoelectric isolating device, the assurance device reliability service.Power converting circuit adopts switch power technology, the conversion efficiency height, and input range is wide.
See also shown in Figure 5, it is the circuit structure diagram of the relay board of the utility model protector, described relay board 42 comprises: outlet circuit 421, driving and holding circuit 422, control loop monitoring circuit 424 and 96 pin change-over circuits 423, described driving and holding circuit 422 all are electrically connected with described relay, receive control signal that described CPU produces and through amplifying the rear drive actuating of relay, relay output node control peripheral operation circuit; It receives the control signal of CPU generation and through amplifying the rear drive actuating of relay, relay output node control peripheral operation circuit reaches purpose of design.Signal holding circuit in the relay board is realized the maintenance function of signal, unless there is slot signal the outside, otherwise the control signal that CPU produces will keep always.
See also shown in Figure 6ly, it is the circuit structure diagram of the instrument transformer plate of the utility model protector, and described instrument transformer plate comprises: circuit board, transformer circuit 411 and 96 pin change-over circuits 412; Described transformer circuit 411 is welded on the described circuit board, and described transformer circuit comprises: big current terminal is electrically connected with instrument transformer, and described instrument transformer is electrically connected with described 96 pin change-over circuits 412; Can be welded to 12 of as many as of instrument transformer number on the circuit board, concrete kind and quantity are determined according to the function of device.The rated value of the former limit of instrument transformer (once surveying) input signal can be changed according to actual conditions, and the output valve of secondary (secondary survey) is constant.
More than explanation is novel just illustrative for this; and it is nonrestrictive; those of ordinary skills understand; under the situation of the spirit and scope that do not break away from following claims and limited; can make many modifications; change, or equivalence, but all will fall in the protection range of the present utility model.
Claims (10)
1. microcomputer protecting device is characterized in that it comprises:
One cabinet;
One LCD is arranged at described case front panel inside, the input of its generator, output interface, and the state of display operation, described LCD comprises Liquid Crystal Module and control circuit board;
Four plug-in units comprise: power panel, processor plate, relay board and instrument transformer plate, described plug-in unit all are to be inserted in regular turn by the cabinet rear portion;
One motherboard is used to connect the effect of various signals and fixing pluge, and it is positioned at the front portion of cabinet, between LCD and plug-in unit;
One rear board is used for closed case, fixing pluge and binding post, and it is arranged at the rear portion of described cabinet.
2. microcomputer protecting device according to claim 1; it is characterized in that; described cabinet comprises: front panel, casing, barricade, back shroud, it has fixing, as to protect inner each plug-in unit and electromagnetic shielding effect as the supporting structure of electric components.
3. microcomputer protecting device according to claim 1 is characterized in that, it provides working power for whole device described power panel, and it links to each other with external electrical network, and links to each other with described processor plate, and the electric energy that transforms is passed to it;
Described processor plate is handled acquired signal, its with described LCD, relay board is electrically connected to them that control signal is provided, and accepts operation signal by instrument transformer plate, network or LCD simultaneously.
4. according to claim 1 or 3 described microcomputer protecting devices; it is characterized in that; it comprises monitoring CPU circuit, protection cpu circuit and 96 pin change-over circuits described processor plate; described CPU is two; a slice is finished the CPU of defencive function, the CPU that a slice is finished monitoring function, and described CPU and the described CPU that finishes monitoring function that finishes defencive function carries out exchanges data by the I2C bus.
5. microcomputer protecting device according to claim 4; it is characterized in that; comprise on the control circuit board of described LCD that a slice finishes the CPU of Presentation Function, describedly finish monitoring function CPU and finish Presentation Function CPU and be connected by serial communication mode..
6. according to claim 1 or 3 described microcomputer protecting devices, it is characterized in that, described power panel comprises: switching value input circuit and power converting circuit and 96 pin change-over circuits, it is electrically connected described switching value input circuit with described processor plate, the level signal that becomes CPU to discern the switch state of outside; Described power converting circuit is importing power supply through conversion, for described protected device provides power supply.
7. microcomputer protecting device according to claim 6 is characterized in that, also comprises a photoelectric isolating device, is arranged on the described power panel, and the input signal and the output signal of switching value are kept apart.
8. according to claim 1 or 3 described microcomputer protecting devices, it is characterized in that described instrument transformer plate comprises: circuit board, transformer circuit and 96 pin change-over circuits; Described transformer circuit is welded on the described circuit board, and described transformer circuit comprises: big current terminal is electrically connected with instrument transformer, and described instrument transformer is electrically connected with described 96 pin change-over circuits.
9. microcomputer protecting device according to claim 8 is characterized in that, 12 at the most of described instrument transformers.
10. according to claim 1 or 3 described microcomputer protecting devices; it is characterized in that; described relay board comprises: outlet circuit, driving and holding circuit, control loop monitoring circuit and 96 pin change-over circuits; described driving and holding circuit all are electrically connected with described relay; receive control signal that described CPU produces and through amplifying the rear drive actuating of relay, relay output node control peripheral operation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201494381U CN201069852Y (en) | 2007-06-04 | 2007-06-04 | A computer protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201494381U CN201069852Y (en) | 2007-06-04 | 2007-06-04 | A computer protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201069852Y true CN201069852Y (en) | 2008-06-04 |
Family
ID=39491238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201494381U Expired - Fee Related CN201069852Y (en) | 2007-06-04 | 2007-06-04 | A computer protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201069852Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104102204A (en) * | 2014-07-09 | 2014-10-15 | 郑州金源特变电气有限公司 | Intelligent microcomputer protection device |
-
2007
- 2007-06-04 CN CNU2007201494381U patent/CN201069852Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104102204A (en) * | 2014-07-09 | 2014-10-15 | 郑州金源特变电气有限公司 | Intelligent microcomputer protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080604 Termination date: 20140604 |