CN204129477U - Campus electric power monitoring system - Google Patents
Campus electric power monitoring system Download PDFInfo
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- CN204129477U CN204129477U CN201420591045.6U CN201420591045U CN204129477U CN 204129477 U CN204129477 U CN 204129477U CN 201420591045 U CN201420591045 U CN 201420591045U CN 204129477 U CN204129477 U CN 204129477U
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Abstract
The utility model discloses a kind of campus electric power monitoring system, relate to campus automation field.A central processing unit is had than utility model; Be connected the distant measure portion and remote signalling amount part that are used for image data with central processing unit, distant measure portion comprises the temperature and humidity signal of substation; Remote signalling amount part comprises the fire alarm of transformer station, cigarette police, theft alarm, not position, short circuit and power cut signal; Distant measure portion and remote signalling amount part are arranged on for installing in the transformer room of transformer station, and distant measure portion is connected with central processing unit respectively by isolation module with remote signalling amount part; The display be connected with central processing unit; The clock chip be connected with central processing unit; The key part be connected with central processing unit; The power unit be connected with central processing unit; The watchdog circuit for monitoring be connected with central processing unit; The alarm portion be connected with central processing unit.Provide safeguard to the operation of campus electric power, accomplish that unattended surpassing has people on duty.
Description
Technical field
The utility model relates to campus automation field, specifically a kind of campus electric power monitoring system.
Background technology
Along with the development of campus digitization Campus Construction, utilize network technology, mechanics of communication, computer technology, Modern Education Technology, be built into the digital information technique platform of school, set up data center, formulate information standard, complete office automation, IT application in management, the intelligent platform of Web-based instruction energy management, the construction of each application system such as all-in-one campus card, the normal use of campus electric power facility is particularly important, therefore Digital Campus unmanned electric power accident Forewarning Terminal is set up, unmanned electric power accident Warning Service device, accident pre-alarming system display screen (can select) forms.Accident early warning terminal mainly should complete real-time data acquisition, judgement and process, and result is sent to substation operation Surveillance center (or Substation Operating team) by communication network.Accident early warning terminal should be arranged in Digital Campus System.Accident early warning server all will process accident terminal and accident early warning server.If there is alarm failure.Then require that accident early warning server all will be reported to the police to accident terminal and accident early warning server, accident server is also wanted to record time of fire alarming, can communicate with operation workstation, scheduling, aut.eq. etc.Accident early warning server can be arranged on dispatching office, place such as operation team etc., record time of fire alarming, to inquire about, analyze its data and should share in whole power department communication network.Accident pre-alarming system display screen mainly completes accident display, can sound and light alarm, enables operation monitoring personnel obviously see place where the accident occurred point and type.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the utility model provides a kind of campus electric power monitoring system, on the running status of the various equipment of campus electric power and when affecting operation power the factor of safe operation realize on-line checkingi, enable failure message discovery early and processed timely.
The utility model realizes with following technical scheme: a kind of campus electric power monitoring system, comprises
---central processing unit;
---for distant measure portion and the remote signalling amount part of image data, distant measure portion comprises the temperature and humidity signal of substation; Remote signalling amount part comprises the fire alarm of transformer station, cigarette police, theft alarm, not position, short circuit and power cut signal; Described distant measure portion and remote signalling amount part are arranged on for installing in the transformer room of transformer station, and distant measure portion is connected with central processing unit respectively by isolation module with remote signalling amount part;
---the display be connected with central processing unit, shows in real time for temperature and time;
---the clock chip be connected with central processing unit, realizes the timing of clock, then time data is sent into central processing unit control display;
---the key part be connected with central processing unit, is used for levelling time, alarm clock and temperature alarming value;
---the power unit be connected with central processing unit;
---the watchdog circuit for monitoring be connected with central processing unit;
---the alarm portion be connected with central processing unit.
The beneficial effects of the utility model are: on the running status of the various equipment of campus electric power and when affecting operation power the factor of safe operation realize on-line checkingi, enable failure message discovery early and processed timely.
Accompanying drawing explanation
Fig. 1 is the utility model theory diagram,
Fig. 2 is the utility model circuit diagram.
Embodiment
?as shown in Figure 1, a kind of campus electric power monitoring system, comprises central processing unit; Be connected the distant measure portion and remote signalling amount part that are used for image data with central processing unit, distant measure portion comprises the temperature and humidity signal of substation; Remote signalling amount part comprises the fire alarm of transformer station, cigarette police, theft alarm, not position, short circuit and power cut signal; Described distant measure portion and remote signalling amount part are arranged on for installing in the transformer room of transformer station, and distant measure portion is connected with central processing unit respectively by isolation module with remote signalling amount part; The display be connected with central processing unit, shows in real time for temperature and time; The clock chip be connected with central processing unit, realizes the timing of clock, then time data is sent into central processing unit control display; The key part be connected with central processing unit, is used for levelling time, alarm clock and temperature alarming value; The power unit be connected with central processing unit; The watchdog circuit for monitoring be connected with central processing unit; The alarm portion be connected with central processing unit.
As shown in Figure 2, described central processing unit adopts single-chip computer AT89C52, is the AT89C52 of the production of atmel corp.AT89C52 is a kind of low-voltage, high-performance COMS8 8-digit microcontroller of band 8K byte flash programmable and erasable ROM (read-only memory) (PEROM).
Signals collecting part: at the beginning, sheet choosing (/CS) is high, I/O CLOCK and ADDRESS is prohibited and DATA OUT is high-impedance state, when serial line interface makes sheet select (/CS) step-down to start transfer process, I/O CLOCK and ADDRESS is enable, and make DATA OUT hold disengaging high-impedance state, then, serial ports provides 4 bit port addresses to ADDRESS end, the I/O of I/O clock sequence input simultaneously CLOCK, at this moment serial ports also receive from DATA OUT termination before the result once changed, I/O CLOCK holds and receives the long input clock sequence of 10 to 16 clock from main serial line interface, front 4 I/O clocks 4 bit address load address register from ADDRESS end, analog channel needed for selection, during later 6 clocks, the sampling of analog input provides Control timing sequence.
On DATA OUT pin, when the front MSB once changed appears at the trailing edge of sheet choosing (/CS), appear in mode 2 and 4 EOC on when opening limit, and when measuring the trailing edge of present 16th clock in mode 6, remaining 9 are moved out of when later 9 trailing edges of I/O CLOCK, 10 bit data are sent to main serial line interface through DATA OUT end, the number of serial clock pulse used also depends on the mode of work, but start to change, minimum needs 10 time clock, step-down is exported at the negative edge EOC of the 10th clock, and logic high is got back to when converting, EOC can be read by main frame, if the transmission of I/O CLOCK is more than 10 clocks, the 10th clock trailing edge internal logic also by DATA OUT step-down to ensure that everybody value remaining is zero.
Monitoring watchdog circuit part: watchdog circuit adopts X25045 chip, that Xicor company produces, X25045 chip includes the serial E2PROM of 512 × 8, can directly connect with the I/O mouth serial of microcontroller, have an order register in X25045 chip, this register visits by SI.Data are inputted by clock synchronous at the rising edge of SCK, and in whole under-stream period, CS must be low level and WP must be high level, if do not have the activity of bus in the time-out time that WatchDog Timer is preset, so X25045 will provide reset signal to export.X25045 chip internal has " writing an enable " latch, and before execution write operation, this latch automatically resets.X25045 chip also has a status register, is used to provide X25045 status information and arranges the timeout feature of block protection and house dog.
Clock part: clock chip adopts DS12887 chip.The VCC of DS12887 chip is+5V power supply, and when VCC is lower than 4.25V, read-write is prohibited; During lower than 3V, RAM sum counter is switched to inner lithium battery.MOT pin is that the selection of two kinds of bus types selects MOTOROLA sequential when meeting Va, selects INTEL sequential when meeting GND.Selecting party wave output signal 13 taps that SQW pin can provide from interior 15 grades of frequency divisions of real-time pulse, its frequency can be bi-directional address/data multiplexing line by changing AD0-AD7 to register A programming, AS is address strobe input, and the function that DS with R/W pin is locked in address by its negative edge is relevant with the level of MOT pin.When MOT connect VCC select MOTORLA sequential time, DS is a positive pulse, appears at the rear disconnected of bus cycles, is called data strobe.When DS is high level, R//W high or lowly indicates read or write cycle respectively.When MOT ground connection selects INTELA sequential, DS and R//W be equivalent to typical memory /RD and/WR ,/CD are chip selection signal, Low level effective/IRQ for interrupt application Low level effective export, when interrupt condition does not meet, / IRQ is in high-impedance state, and/IRQ is that open-drain exports, and requires external pull-up resistor, / RESET is the input that resets, Low level effective, the retention time should be greater than 200ms, but to clock, calendar, and the RAM of the invalid DS12887 of general RAM distributes.
Key part: key part adopts the multiplexing button in K0 ~ K7 eight tunnel, when two-way switch disconnects, button practical function one, K0 is for eliminating alarm key, K1 is for checking temperature, top limit of humidity button, K2 is for checking date button, and K3 is for checking time button, and K4 ~ K7 is user's definition push key.The button practical function two when two-way switch closes, wherein K0 is temperature, humidity arranges key, and K1 arranges key on the date, and K6, K7 are defined by the user.
Two-way switch is connected with the P1.6 mouth of single-chip computer AT89C52, and button driver 74LS245 is connected in data bus, realizes the management to button by program scanning.Consider the practicality of product, therefore this device when designing for various input, output quantity can in a larger scope flexible configuration, be suitable for the needs of various user.
Display section: with the LED common cathode display of high brightness, by the PA mouth of 8255, PB mouth and driver 74LS245 realize the control to display segment, position mouth, program adopts dynamic display types, display environment temperature, temperature value when wherein 8 displays are normal, then show the value that needs are checked when checking, when to Operation system setting, the flash for prompting setting of position can be set by software control.
Alert process part: by the process of data and the scanning of remote measurement amount, by multiple signal respectively also, send light warning port.Light is reported to the police and is made up of 8 light emitting diodes, latched by trigger 74LS574,8 alarm indications are respectively: fire alarm, cigarette police, theft alarm, water policeman, short circuit, power failure, temperature alarming, humidity alarm, and acoustic alarm is exported by P1.7 mouth, and triode drives buzzer warning.All Alerts signal is printed by mini-printer and stores, and alerting signal, until staff is disposed, is removed with button, and printing problem process information is preserved.74LS574 is edging trigger eight d type flip flop, adopt advanced oxide-isolated, ion is lived into Schottky processing, function is identical with LS374 function, bus structure pin exports, when the power consumption of about half, it exchanges effect and can be better than LS374 Three-State type and export Direct driver bus, and switch normal value is 50uf.
For improving the antijamming capability of device, during design, should following measures be taked:
(1) terminal is mounted in electric substation, and various interference is very large, and input, output all have employed photoelectric isolation technology.
(2) in order to ensure the continuity of system cloud gray model, prevent system in case of system halt and program " race flies ", hardware and software all have employed watchdog technique.
The utility model can carry out message exchange with the complex automatic system of transformer station, transformer station direct current system, centralized control center or master station; Can with transformer station's on-line detecting system communication, complete the on-line checkingi analysis to single assembly; Communication protocol adopts CDT promulgated by the ministries or commissions of the Central Government.Accident early warning main station system can be used as a subsystem of electric power enterprise computer generalization infosystem, and its information resources can be shared within the scope of whole enterprise network, also can be accessed remotely through computer networks in wide area network (comprising Internet) scope.All data are all on the server, online without broadcast mode, ensure that the uniqueness of data.Client computer wants data by ICP/IP protocol to server.
The effects such as the main data acquisition of accident early warning terminal, judgement and process, display and transmission.Adopt High Performance SCM chip 89C52 to be the core of device, and have employed photoelectric isolation technology, antijamming capability that watchdog technique improves device.This system is that monitoring target is implemented to each monitoring equipment, the safe operation of electrical network is responsible for by Computer Integrate Automatization, the per unit safe operation of electric power accident early warning system charge of overseeing campus electric power and environmental aspect (fire alarm, cigarette is alert, theft alarm, water policeman, full station has a power failure, accident early warning etc.), and pass through fuzzy control, intelligent decision etc. determine the order of importance and emergency of accident potential, to take different measure in advance with process, and thoroughly can eliminate wrong report, there is provided real guarantee can to the operation of campus electric power, really accomplish that unattended surpassing has people on duty.
Claims (5)
1. a campus electric power monitoring system, is characterized in that: comprise
---central processing unit;
---for distant measure portion and the remote signalling amount part of image data, distant measure portion comprises the temperature and humidity signal of substation; Remote signalling amount part comprises the fire alarm of transformer station, cigarette police, theft alarm, not position, short circuit and power cut signal; Described distant measure portion and remote signalling amount part are arranged on for installing in the transformer room of transformer station, and distant measure portion is connected with central processing unit respectively by isolation module with remote signalling amount part;
---the display be connected with central processing unit, shows in real time for temperature and time;
---the clock chip be connected with central processing unit, realizes the timing of clock, then time data is sent into central processing unit control display;
---the key part be connected with central processing unit, is used for levelling time, alarm clock and temperature alarming value;
---the power unit be connected with central processing unit;
---the watchdog circuit for monitoring be connected with central processing unit;
---the alarm portion be connected with central processing unit.
2. campus according to claim 1 electric power monitoring system, is characterized in that: described central processing unit adopts single-chip computer AT89C52.
3. campus according to claim 1 electric power monitoring system, is characterized in that: described watchdog circuit adopts X25045 chip.
4. campus according to claim 1 electric power monitoring system, is characterized in that: described clock chip adopts DS12887 chip.
5. campus according to claim 1 electric power monitoring system, is characterized in that: described key part adopts the multiplexing button in K0 ~ K7 eight tunnel.
?
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420591045.6U CN204129477U (en) | 2014-10-13 | 2014-10-13 | Campus electric power monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420591045.6U CN204129477U (en) | 2014-10-13 | 2014-10-13 | Campus electric power monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204129477U true CN204129477U (en) | 2015-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420591045.6U Expired - Fee Related CN204129477U (en) | 2014-10-13 | 2014-10-13 | Campus electric power monitoring system |
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| Country | Link |
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| CN (1) | CN204129477U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105843125A (en) * | 2016-05-10 | 2016-08-10 | 国网山东省电力公司德州供电公司 | Transformer station sequence operation system and method based on state identification technology |
-
2014
- 2014-10-13 CN CN201420591045.6U patent/CN204129477U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105843125A (en) * | 2016-05-10 | 2016-08-10 | 国网山东省电力公司德州供电公司 | Transformer station sequence operation system and method based on state identification technology |
| CN105843125B (en) * | 2016-05-10 | 2018-05-25 | 国网山东省电力公司德州供电公司 | A kind of system and method for substation's series of operations based on status recognition technique |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150128 Termination date: 20151013 |
|
| EXPY | Termination of patent right or utility model |