CN203909929U - Real-time alarm system for electricity consumption of dormitory in campus - Google Patents

Abstract

The utility model discloses a real-time alarm system for electricity consumption of a dormitory in a campus. The system comprises an ADE7755 chip electric quantity acquisition module, an MFRC500 chip radio-frequency card reading module, a single-chip microcomputer, a 12864LCD chip display module and an SIM900 chip short message module, wherein the electric quantity acquisition module, the radio-frequency card reading module, the display module and the short message module are connected with the single-chip microcomputer through serial ports, and a program in the single-chip microcomputer processes data transmitted by each module and controls each module to work. The real-time alarm system for electricity consumption of the dormitory in the campus has the advantages that users can obtain real-time electric consumption information through short message query, just like telephone charge query through short messages; when residual electric quantity is reduced to a specific value, the system automatically transmits short messages to user mobile phones to remind the users to charge money, and the specific value can be self-set; the users can directly read used electric quantity and residual electric quantity through the display screen.

Description

Campus accommodation electricity usage amount realtime alarm system

Technical field

The utility model relates to measures electronics and communication technical field, especially a kind of campus accommodation electricity usage amount realtime alarm system.

Background technology

At present, in campus, most popular electric energy meter is electronic electric energy meter, this ammeter can in table, dump energy drops to particular value in, flashing indicator light reminding user power purchase, and can be intuitively by electric weight service condition, the information exchanges such as dump energy are crossed display screen and are fed back to user, but the ammeter in campus is generally entire building to be collected in somewhere, student checks inconvenience or forgets and check, thereby cannot receive alarm signal, causes the unexpected power-off in bedroom.

Summary of the invention

The purpose of this utility model is to provide a kind of campus accommodation electricity usage amount realtime alarm system, this system can realize user's direct inquiry to the real-time power consumption of dormitory by note, realize dormitory and automatically send note to user mobile phone alarm when power purchase surplus is not enough, also can realize user to directly checking of power consumption and dump energy.

The technical solution of the utility model is: a kind of campus accommodation electricity usage amount realtime alarm system, this system comprises ADE7755 chip electric quantity acquisition module, M FRC500 chip radio frequency card reading module, single-chip microcomputer, 12864LCD chip display module and SIM900 chip SMS module, electric quantity acquisition module, radio frequency card reading module, display module, SMS module are all connected by serial ports with single-chip microcomputer, each module work is processed and controlled to the data that program in single-chip microcomputer is imported each module into, between these four modules, do not contact directly.

AD E7755 chip electric quantity acquisition module pulse output end is connected with single-chip microcomputer INTO serial ports, imports power signal into single-chip microcomputer with electric pulse form, and single-chip microcomputer Program is to accept the criterion of 6400 subpulses as once using as electric weight.

SIM900 chip SMS module serial ports is connected with microcontroller serial port by MAX232 change-over circuit, being specially SIM900 chip SMS module RXD end is connected with T1IN with the R1OUT of MAX232 change-over circuit respectively with TXD end, single-chip microcomputer TXD end is connected with R2OUT with the T2IN of MAX232 change-over circuit respectively with RXD end, in the time that SIM900 chip SMS module receives the query statement from user, single-chip microcomputer will work as immediately in anter data message be real-time electricity consumption situation by SIM900 chip SMS module with note form to user, short message content comprises power consumption and dump energy.

M FRC500 chip radio frequency card reading module data terminal is connected with the PO serial ports of single-chip microcomputer, control end ALE connects single-chip microcomputer P45 serial ports, RST termination single-chip microcomputer P26 serial ports, NRD termination single-chip microcomputer P37 serial ports, NWR termination single-chip microcomputer P36 serial ports, NCS termination single-chip microcomputer P27 serial ports, in Card Reader process, in card, purchase of electricity and Subscriber Number write single-chip microcomputer, single-chip microcomputer records charge value and number, by programmed control, electric weight is realized to depreciation and operates.

12864LCD chip display module data terminal is connected with the P1 serial ports of single-chip microcomputer, control end CS connects single-chip microcomputer P25 serial ports, WR termination single-chip microcomputer P24 serial ports, E termination single-chip microcomputer P23 serial ports, 12864LCD chip display module is born demonstration work, and all necessary informations are intuitively shown.

In the time that single-chip microcomputer detects that dump energy just drops to particular value, single-chip microcomputer is controlled immediately SIM900 chip SMS module and is initiatively sent note to user mobile phone and remind power purchase, this particular value can be set voluntarily by user, also can be system default value, and alarm message can be sent in dormitory everyone.

The utility model has the advantage of: user can obtain real-time electric weight service condition by message search mode, is similar to message search telephone expenses; In the time that dump energy drops to particular value, system automatically sends note and reminds charging to user mobile phone, and this particular value can be set voluntarily; User can directly read power consumption and dump energy by display screen.

Embodiment

Campus accommodation electricity usage amount realtime alarm system comprises a basic function for electronic electric energy meter, and the function of short message alarm when electric weight is not enough can also be provided by the real-time power information of message search for user.This campus dormitory real-time power consumption intelligent warning system is by ADE7755 chip electric quantity acquisition module 1; Single-chip microcomputer 2; M FRC500 chip radio frequency card reading module 3; SIM900 chip SMS module 4; 12864LCD chip display module 5 forms.

ADE7755 chip electric quantity acquisition module 1 pulse output end is connected with the INTO serial ports of single-chip microcomputer 2; M FRC500 chip radio frequency card reading module 3 data terminals are connected with the PO serial ports of single-chip microcomputer 2, control end ALE connects single-chip microcomputer P45 serial ports, RST termination single-chip microcomputer P26 serial ports, NRD termination single-chip microcomputer P37 serial ports, NWR termination single-chip microcomputer P36 serial ports, NCS termination single-chip microcomputer P27 serial ports; SIM900 chip SMS module 4 serial ports are connected with the serial ports of single-chip microcomputer 2 by MAX232 change-over circuit, be specially SIM900 chip RXD end and be connected with T1IN with the R1OUT of MAX232 change-over circuit respectively with TXD end, single-chip microcomputer TXD end is connected with R2OUT with the T2IN of MAX232 respectively with RXD end; 12864LCD chip display module 5 data terminals are connected with the P1 serial ports of single-chip microcomputer 2, and control end CS connects single-chip microcomputer P25 serial ports, WR termination single-chip microcomputer P24 serial ports, E termination single-chip microcomputer P23 serial ports; These four modular circuits do not contact mutually, control respectively its work by the different subroutines of single-chip microcomputer.System is accepting, after instruction, current electric quantity information is fed back to user, initiatively sends the also long-term demonstration of SMS Tip to user and used and dump energy in the time that remaining electricity is not enough.

Figure of description explanation

Accompanying drawing is the utility model campus accommodation electricity usage amount realtime alarm system structural representation.

After system starts, electric quantity acquisition module 1, single-chip microcomputer 2, display module 5 are started working, and now not input of display module 5, so do not show information about power, only shows relevant school information.Write when electricity card being aimed to induction zone that purchase of electricity and user mobile phone number are to single-chip microcomputer, the electric pulse that single-chip microcomputer is inputted electric quantity acquisition module 1 starts counting, occurs power consumption and dump energy on display screen simultaneously; In the time that SMS module 4 receives from user's query statement and passed to single-chip microcomputer 2, single-chip microcomputer 2 sends to user by corresponding power consumption and the dump energy of overall pulse number receiving when the data in anter by SMS module 4 immediately; In the time that single-chip microcomputer 2 detects that dump energy drops to the particular value of having set, control immediately SMS module 4 and send alarm message to user mobile phone and remind power purchase; As not charging in time of user, cause electric weight to exhaust, system sends note to user mobile phone and reminds electric weight to use up, and display end also reminds electric weight to use up simultaneously, and electric quantity acquisition module 1 quits work; After aiming at induction zone when power purchase again and by electricity card and reactivating, electric quantity acquisition module 1 is reworked, and other modules work on according to Single-chip Controlling.

The principle of work of the each module of the utility model is as follows:

ADE7755 chip electric quantity acquisition module 1: the voltage and current signal that flows through electric quantity acquisition module multiplies each other through multiplier, and the signal of gained filters after AC compounent after low-pass filter, and the DC component obtaining is exactly instantaneous active power.This signal converts the low frequency signal being directly proportional to average active power to through output port output through number frequency converter, export from high frequency mouth the pulse signal being directly proportional to instantaneous active power simultaneously, then this pulse being passed to single-chip microcomputer measures, it is the criterion as power consumption once that Single Chip Microcomputer (SCM) program is set every reception 6400 subpulse signals, thereby obtains the information of power consumption.

Single-chip microcomputer 2: stored master routine and many subroutines in single-chip microcomputer, single-chip microcomputer is by work and the end of the each module of programmed control, and the processing of bearing all data is calculated.

MFRC500 chip radio frequency card reading module 3: Single-chip Controlling MFRC500 chip radio frequency card reading module driven antenna is to IC-card, and transponder carries out read-write operation.When power purchase, purchase of electricity and Subscriber Number are first write IC-card by keeper, user writes single-chip microcomputer by swiping the card by purchase of electricity and Subscriber Number, and single-chip microcomputer records power consumption information and operates by depreciation the dump energy information that draws as the mode of kilowatt-hour according to receiving 6400 subpulses.

The major function of SIM900 chip SMS module 4:SIM900 chip SMS module is to realize the information interaction of user and system, here the SMS of using SIM900 chip is that user passes to single-chip microcomputer by SIM900 chip module by query statement, and the information exchange that single-chip microcomputer is inquired about user is again crossed SIM900 chip SMS module and sent to user with note form.

12864LCD chip display module: 12864LCD built-in chip type DC-CD change-over circuit, do not need additional negative pressure, set up and communicate by letter with single-chip microcomputer by serial mode, inside modules shows that datarams provides the space of 64 × 2 bit groups, the Chinese font that can control at most 64 words shows, for system provides sufficient space, all necessary informations is shown.

Claims (5)

1. a campus accommodation electricity usage amount realtime alarm system, it is characterized in that: this system comprises ADE7755 chip electric quantity acquisition module, M FRC500 chip radio frequency card reading module, single-chip microcomputer, 12864LCD chip display module and this 5 part of SIM900 chip SMS module, ADE7755 chip electric quantity acquisition module, M FRC500 chip radio frequency card reading module, 12864LCD chip display module, SIM900 chip SMS module are all connected by serial ports with single-chip microcomputer, and each module work is processed and controlled to the data that the program in single-chip microcomputer is imported each module into.

2. campus accommodation electricity usage amount realtime alarm system according to claim 1, it is characterized in that: ADE7755 chip electric quantity acquisition module pulse output end is connected with single-chip microcomputer INTO serial ports, import power signal into single-chip microcomputer with electric pulse form, the criterion that single-chip microcomputer Program uses as-Du as electric weight to accept 6400 subpulses.

3. campus accommodation electricity usage amount realtime alarm system according to claim 1, it is characterized in that: SIM900 chip SMS module serial ports is connected with microcontroller serial port by MAX232 change-over circuit, be specially SIM900 chip SMS module RXD end and be connected with T1IN with the R1OUT of MAX232 change-over circuit respectively with TXD end, single-chip microcomputer TXD end is connected with R2OUT with the T2IN of MAX232 change-over circuit respectively with RXD end.

4. campus accommodation electricity usage amount realtime alarm system according to claim 1, it is characterized in that: MFRC500 chip radio frequency card reading module data terminal is connected with the PO serial ports of single-chip microcomputer, control end ALE connects single-chip microcomputer P45 serial ports, RST termination single-chip microcomputer P26 serial ports, N RD termination single-chip microcomputer P37 serial ports, NWR termination single-chip microcomputer P36 serial ports, NCS termination single-chip microcomputer P27 serial ports.

5. campus accommodation electricity usage amount realtime alarm system according to claim 1, it is characterized in that: 12864LCD chip display module data terminal is connected with the P1 serial ports of single-chip microcomputer, control end CS connects single-chip microcomputer P25 serial ports, WR termination single-chip microcomputer P24 serial ports, E termination single-chip microcomputer P23 serial ports.