CN208538130U - A kind of intelligent computer key - Google Patents

Abstract

The utility model discloses a kind of intelligent computer keys, it is related to substation's appliance technology；CPU processing module passes through conducting wire respectively and is electrically bi-directionally connected with human-computer interaction module, memory module, RFID reading code module, voice module, unlocking module, power module, communication module；For the CPU processing module using STM32F429IGT6 chip as MCU, chip dominant frequency is up to 180Mhz；The utility model integrates opto-mechanical-electricity-communication portable operation tool, is mainly used for receiving operation order by five-preventing system host or industrial personal computer, is unlocked operation to equipment, and operation information is fed back to five anti-host systems.

Description

A kind of intelligent computer key

Technical field

The utility model belongs to substation's appliance technology, and in particular to a kind of intelligent computer key.

Background technique

In power supply system, the continuous development of electric system and the raising of living standards of the people so as to power supply quality and The requirement of power supply reliability is also higher and higher, and electric switching operation is then an important factor for constituting this two indexs.

The operation of equipment is determined jointly by the operations staff of control centre and substation in the distance in substation.Become The maintenance of power station equipment routine stops power transmission operation, needs to be filed an application by transformer station personnel, dispatcher is according to system operation situation Operation plan is made, then dispatching order allows substation to go to execute.

The general flow of operation are as follows:

1. dispatcher instructs to substation's responsible person's dispatching；

2. work of transformer substation personnel open work ticket according to dispatch command；

3. the guardian and operator that are sent after simulated operation is errorless by substation responsible person go to execute operation；

4. after operation, being reported to responsible person and dispatcher, work ticket being achieved.

In above operating procedure, if especially the error of third portion can cause very seriously to the person or electrical equipment Injury.Operation of Electric Systems extremely emphasizes safety, according to the incidental mistake of power system operation, proposes five kinds of preventions Measure, referred to as electrical five is anti-.

1. preventing on-load point and disconnecting link；

2. preventing mistake point, falsely close circuit breaker, on-load switch, contactor；

3. preventing live ground wiring (or grounding knife lock)；

4. anti-stop-band ground wire closes breaker and disconnecting switch；

5. preventing mistakenly entering charged chamber.

Substation is then particularly important as the hinge link powered in electric system, " five is anti-".Although in China " five It is anti-" history of research and existing nearly 60 years of the application of device, the summary of people based on practical experience also take it is many effectively Measure, but maloperation still accounts for sizable ratio in factory, electric operation accident of standing, so fool proof R and D The always hot spot of China's electric power research department and colleges and universities' concern.

Now in order to meet ever-increasing electricity needs, electric network composition is increasingly complicated, to the operation of electric power primary equipment with Maintenance also increasingly increases, but caused every year due to maloperation personal injury, equipment damage accident it occur frequently that, and be Accident is avoided, fail safe system for transformer substation occurs, the rule for the anti-misoperation locking that it is operated according to the primary equipment of substation Then the equipment of substation is latched, the generation of maloperation can be effectively reduced, improve the reliability of power grid operation, And the most important part of five-preventing system is exactly computer key, but protective is poor in operation for existing computer key, no It is able to achieve the feedback and communication of operator message.

Utility model content

To solve existing computer key, protective is poor in operation, can not achieve the feedback and communication of operator message Problem；The purpose of this utility model is to provide a kind of intelligent computer keys.

A kind of intelligent computer key of the utility model, it includes human-computer interaction module, memory module, RFID reading code mould Block, CPU processing module, voice module, unlocking module, power module, communication module；CPU processing module pass through respectively conducting wire with Human-computer interaction module, memory module, RFID reading code module, voice module, unlocking module, power module, communication module are electrically double To connection；For the CPU processing module using STM32F429IGT6 chip as MCU, STM32F429IGT6 chip includes 256KB SRAM, 1024KB FLASH, 12 16 bit timing devices, 2 32 bit timing devices, 2 dma controllers, 6 SPI, 2 full duplexs I2S, 1 SAI, 3 IIC, 8 serial ports, 2 USB, 2 CAN, 3 12 ADC, 1 RTC, 1 SDIO interface, 1 FMC Interface, 1 TFTLCD controller, 1 10/100M ethernet mac controller, 1 utilizing camera interface, 1 hardware random number are raw It grows up to be a useful person and 140 universal I/O ports, chip dominant frequency is up to 180Mhz.

Preferably, the communication module includes RS232 communication module, Zigbee communicating circuit.

Preferably, the unlocking module includes mechanical lock unlocking circuit and electrolock unlocking circuit；Mechanical lock unlocking mold Block is divided into solenoid driver circuit, electromagnet power supply circuit and infrared circuit.

Preferably, human-computer interaction module includes LCD power circuit, LCD display circuit and keyboard circuit.

Preferably, the storage module includes NAND FLAHS storage circuit and SDRAM interlock circuit.

Preferably, the power module includes system power supply circuit and lithium battery charging circuit.

Compared with prior art, the utility model has the following beneficial effects: integrating opto-mechanical-portable behaviour of electricity-communication Make tool, is mainly used for receiving operation order by five-preventing system host or industrial personal computer, is unlocked operation to equipment, and will Operation information feeds back to five anti-host systems.

Detailed description of the invention

The present invention is described in detail by the following detailed description and drawings for ease of explanation,.

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the circuit diagram of the RS232 communicating circuit of communication module in the utility model；

Fig. 3 is the circuit diagram of the Zigbee wireless communication line of communication module in the utility model；

Fig. 4 is the circuit diagram of RFID reading code circuit in the utility model；

Fig. 5 is the circuit diagram of the electromagnet power supply circuit of unlocking module in the utility model；

Fig. 6 is the circuit diagram of the solenoid driver circuit of unlocking module in the utility model；

Fig. 7 is that the mechanical lock of unlocking module in the utility model is unlocked the circuit diagram of detection circuit in place；

Fig. 8 is the circuit diagram of the electrolock unlocking circuit of unlocking module in the utility model；

Fig. 9 is the circuit diagram of voice module in the utility model；

Figure 10 is the circuit diagram of the keyboard circuit of human-computer interaction module in the utility model.

Specific embodiment

To make the objectives, technical solutions and advantages of the present invention clearer, below by shown in the accompanying drawings Specific embodiment describes the utility model.However, it should be understood that these descriptions are merely illustrative, and it is not intended to limit this reality With novel range.In addition, in the following description, descriptions of well-known structures and technologies are omitted, to avoid unnecessarily mixing Confuse the concept of the utility model.

Here, it should also be noted that, in order to avoid having obscured the utility model because of unnecessary details, in the accompanying drawings It illustrate only the structure and/or processing step closely related with scheme according to the present utility model, and be omitted practical with this The little other details of new relationship.

As shown in Figure 1, present embodiment use following technical scheme: it include human-computer interaction module, memory module, RFID reading code module, CPU processing module, voice module, unlocking module, power module, communication module；CPU processing module difference Pass through conducting wire and human-computer interaction module, memory module, RFID reading code module, voice module, unlocking module, power module, communication Module is electrically bi-directionally connected；The CPU processing module is using STM32F429IGT6 chip as MCU, STM32F429IGT6 core Piece includes 256KB SRAM, 1024KB FLASH, 12 16 bit timing devices, 2 32 bit timing devices, 2 dma controllers (totally 16 A channel), 6 SPI, 2 full duplex I2S, 1 SAI, 3 IIC, 8 serial ports, 2 USB (supporting HOST/SLAVE), 2 CAN, 3 12 ADC, 1 RTC (band calendar function), 1 SDIO interface, 1 FMC interface, 1 TFTLCD controller (LTDC), 1 10/100M ethernet mac controller, 1 utilizing camera interface, 1 hardware random number generator and 140 are logical With I/O port, chip dominant frequency is up to 180Mhz.

As shown in Figure 2 and Figure 3, further, the communication module includes RS232 communication module, Zigbee communicating circuit. Information exchange is carried out by communication module between computer key and anti-error host.Anti-error host issues operation order to computer key, electricity Brain key receives operation order and carries out unlocking operation, and operating result is back to defence host by communication module.Communication module point For wireless telecommunications and wire communication, wireless telecommunications use Zigbee module, by wirelessly carrying out signal transmission.Wired module uses RS232 is communicated.

As shown in figure 4, further, the RFID reading code module need to be to lockset ID when being able to achieve computer key unlocking operation It is read out, lockset ID uses unique RFID code.The chip model of RFID reading code module is EM4095, and (original claims EM4095 It P4095) is a 125KHz RFID base station ic of Switzerland's microelectronics (μ EM) company production.The integrated chip Phase synchronization is patrolled The system of collecting, available carrier frequency identical with coil resonance frequency are not required to external crystal-controlled oscillation, and carrier frequency arrives for 100 150kHz supports that a variety of IC card transport protocols, such as EM400X, EM4050, EM4150, EM4070, EM4069 etc., packing forms are SO16.EM4095 is generally used together with antenna with microprocessor, it is only necessary to which seldom peripheral components carry out DC and RF filtering, induction It can be worked normally with power decoupling.

As shown in Fig. 5, Fig. 6, Fig. 7, Fig. 8, further, the unlocking module includes mechanical lock unlocking circuit and electrolock Unlocking circuit；Mechanical lock unlocking module is divided into solenoid driver circuit, electromagnet power supply circuit and infrared circuit；

Intelligent computer key needs to operate lockset after receiving operation order, and lockset is divided into mechanical lock and electrolock, therefore opens Lock module is divided into mechanical lock unlocking circuit and electrolock unlocking circuit.

Mechanical lock unlocking is operated by computer key internal mechanical structure, is carried out detent by electromagnet, is prevented nothing Operation order carries out unlocking operation.It is unlocked successfully by infrared detection confirmation.Therefore mechanical lock unlocking module is divided into solenoid actuated electricity Road, electromagnet power supply circuit and infrared circuit.Correspondence principle figure is as shown in Fig. 5, Fig. 6, Fig. 7.

Electrolock unlocking circuit mainly passes through computer key internal circuit and carries out short circuit to external electrolock, makes electrically to be locked into Row is shorted, to there is electric current to flow through.To as shown in Figure 8 with schematic diagram.

Usually under forceful electric power magnetic environment, the electric energy of certain energy can be incuded in conductor, (lower 10 meters of 500KV substation bus bar Place, wired earth earth-current 0.5mA 1 meter long or so, since whether computer is by having electric current to pass through between two contact electrode of detection Principle detection device whether operate, therefore communicated in unlock situation (two electrode proximates short circuit), respectively with two electrodes two A conductor (such as: electric operating equipment switching on and off circuit power lateral circuit with ground connection lateral circuit), because induced potential is different, most It is discharged at last by computer key current detection circuit, forms electric current, Interference Detection circuit works normally.

The concept detected using floating current, exactly after computer key detects induced current, at the beginning of it capable of being automatically recorded Value has bigger energy electric energy to complete by the operation of the confirmation of rear view step to equipment operation.

As shown in figure 9, further, the voice module is prompted for dual lock personnel when unlocking, voice prompting Circuit uses voice world chip SYN6288.Speech chip receives CPU transmitting order to lower levels by serial ports, and portion carries out language in the chip Sound synthesizes and passes through buzzer and prompted.Circuit diagram is as shown in Figure 9.

Further, human-computer interaction module includes LCD power circuit, LCD display circuit and keyboard circuit.

Intelligent computer key has human-computer interaction function；Including 2.4 cun of colorful display screens and keyboard.Display screen is used for information Display, display content include operation order information and configuration information.Keyboard is inputted for user, is selected suggestion content Deng.

LCD power circuit, using MAX1848 power supply chip, carries out boosting behaviour to system voltage for lighting LCD backlight Make, is used for liquid crystal display backlight.

LCD display circuit selects 2.4 cun of colorful liquid crystal displays, carries out information exchange by FMC interface and CPU, adopts inside LCD Use ILI9341 as driving chip, CPU carries out information configuration by SPI interface.

Keyboard circuit is as shown in Figure 10, totally 4 keys, including key up and down, and left button is used as cancel key simultaneously, right Key is as acknowledgement key and switch key.

Further, the storage module includes NAND FLAHS storage circuit and SDRAM interlock circuit.SDRAM circuit is adopted With W9825G6KH, communicated by FMC interface with CPU, size 32MB.NAND FLASH circuit uses MT29F4G08. Size is 4GB, shows character library used etc. for storing operation order and LCD.

Further, the power module includes system power supply circuit and lithium battery charging circuit.Power module is system Operation power supply is provided.Computer key is powered when operating by lithium battery, and lithium battery capacity 1150mAh can meet various Operating function.It is charged when dead battery by charging base.System power supply uses Linear Tech LTC2952, is system Operation provides 3.3V power supply.For lithium battery charging circuit for charging to lithium battery, charging chip LTC4053 can Charging time and charging current are controlled by peripheral circuit.It is provided simultaneously with alarm and overheat protector function.

Brain key is executed as a kind of hand-held terminal and monitoring device, is the pass that microcomputer anti-error operation system function is realized Where key, its design occupies an important position in embedded " five is anti-" locking system.Operation order is through anti-misoperation system After simulation preview software preview, if correctly, start send software by operation order by operation order by wired RS232 or Wireless Zigbee is transferred in computer key, and then operations staff can hold computer key and operate to scene.When operation, Operations staff is engaged in the dialogue by keyboard and computer key, and according to the device number shown on computer key, computer key is inserted into It is whether correct by the equipment of RFID verification operation in corresponding puzzle lock, only when storing in puzzle lock and computer key When lock number corresponding to operation order and completely the same lock type, unlocking operation can be carried out, its open blocking mechanism is later Breaker, electric knife gate etc. are operated.Otherwise, liquid crystal display circuit shows lock mistake, and sound circuit long time of alarm is opened Open circuit miss operation.

Computer key can match lockset ID when unlocking, and lockset ID has uniqueness, can guarantee equipment operation in this way Correctly, so that it is guaranteed that operator's personal safety.

This computer key is communicated using wireless Zigbee simultaneously, and operation signal can be carried out to real-time Transmission, is guaranteed The consistency of anti-error host and field equipment state.

Wireless transmission solves some drawbacks of wire transmission, for example operation signal is unable to real-time Transmission, there is delay or de- Section, not can guarantee the consistency of anti-error host and field equipment state.

Present embodiment has following function:

One, communication function: having wireless communication and restricted communication, supports Modbus communication protocol, can receive five anti-masters Operation order that machine issues simultaneously returns to operating result.

Two, human-computer interaction function: using 2.4 cun of colorful liquid crystal display operation tickets and various configuration informations etc., pass through keyboard Carry out data input.

Three, unlocking function: by the way that the operation order issued is parsed and unlocked, unlocking includes mechanical lock and electrolock.

Four, RFID identification function: computer key identifies lockset ID, and issued according to the ID of identification and operation order Content is matched and is unlocked.

Five, sound prompt function: having sound prompt function, for carrying out information alert to operator.

Claims (6)

1. a kind of intelligent computer key, it is characterised in that: it include human-computer interaction module, memory module, RFID reading code module, CPU processing module, voice module, unlocking module, power module, communication module；CPU processing module pass through respectively conducting wire with it is man-machine Interactive module, memory module, RFID reading code module, voice module, unlocking module, power module, the electrically two-way company of communication module It connects；For the CPU processing module using STM32F429IGT6 chip as MCU, STM32F429IGT6 chip includes 256KB SRAM, 1024KB FLASH, 12 16 bit timing devices, 2 32 bit timing devices, 2 dma controllers, 6 SPI, 2 full duplexs I2S, 1 SAI, 3 IIC, 8 serial ports, 2 USB, 2 CAN, 3 12 ADC, 1 RTC, 1 SDIO interface, 1 FMC Interface, 1 TFTLCD controller, 1 10/100M ethernet mac controller, 1 utilizing camera interface, 1 hardware random number are raw It grows up to be a useful person and 140 universal I/O ports, chip dominant frequency is up to 180Mhz.

2. a kind of intelligent computer key according to claim 1, it is characterised in that: the communication module includes RS232 logical Interrogate module, Zigbee communicating circuit.

3. a kind of intelligent computer key according to claim 1, it is characterised in that: the unlocking module includes that mechanical lock is opened Lock circuit and electrolock unlocking circuit；Mechanical lock unlocking module is divided into solenoid driver circuit, electromagnet power supply circuit and infrared Detection circuit.

4. a kind of intelligent computer key according to claim 1, it is characterised in that: human-computer interaction module includes LCD power supply Circuit, LCD display circuit and keyboard circuit.

5. a kind of intelligent computer key according to claim 1, it is characterised in that: the storage module includes NAND FLAHS Storage circuit and SDRAM interlock circuit.

6. a kind of intelligent computer key according to claim 1, it is characterised in that: the power module includes system power supply Circuit and lithium battery charging circuit.