CN202513542U

CN202513542U - Student dormitory intelligent power limiter

Info

Publication number: CN202513542U
Application number: CN2012200989689U
Authority: CN
Inventors: 李超
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-16
Filing date: 2012-03-16
Publication date: 2012-10-31
Anticipated expiration: 2022-03-16

Abstract

The utility model provides a student dormitory intelligent power limiter, comprising an A/D data conversion acquisition circuit, a main control circuit, a display circuit and a load control circuit. The student dormitory intelligent power limiter is characterized in that the main control circuit is connected with the A/D data conversion acquisition circuit, the display circuit and the load control circuit separately, and the main control circuit carries out data acquisition on a load signal via an internal precise simulation comparator and the A/D data conversion acquisition circuit, carries out a series of operation, processing and judgment on the acquired data, so that the users are monitored whether have used peccant electric appliance. If the main control circuit does not detect a load according with a peccant electric appliance characteristic and the total load is less than a specified load, a thyristor is conducted normally, a green light lights all the time, and the display circuit display the current load; conversely, the main control circuit outputs a turn-off signal, the load control circuit turns off the thyristor, and at the same time, the display circuit displays HH, and a red light lights; after 10 seconds, the main control circuit detects the load situation automatically; if the peccant electric appliance still exists, the main control circuit turns off a silicon controlled rectifier continuously, and if the peccant electric appliance is taken away, the main control circuit sends out a conduction signal, the load control circuit controls the thyristor to recover power supply, and the display circuit recovers the current load.

Description

Students' dormitory intelligence electricity-limiter

Technical field

The utility model relates to a kind of electricity-limiter, especially students' dormitory intelligence electricity-limiter.

Background technology

Institution of higher education's hostel management is that the use of a difficult problem, particularly various high-power electric appliances violating the regulations remains existing despite repeated prohibition always.Because the use of electrical equipment violating the regulations causes that the accident of fire happens occasionally, caused serious loss for the property of country, also undergraduate life has been constituted certain threat simultaneously.Though each colleges and universities have all formulated various rules and regulations, because student's variation is big, the source is complicated, level differs, effect is not obvious always, and centesimal classmate uses high-power electric appliance in violation of rules and regulations, just possibly endanger 99 percent student.Traditional electricity-limiter mostly adopts Analogical Electronics and resolution element produced; With low content of technology, volume is big, job insecurity, can not in time reflect load condition, also will have the people on duty simultaneously, once the tripping operation of rationing the power supply; Want shortcomings such as manual reset, can not obtain excellent popularization all the time.

Summary of the invention

In order to improve above problem, this utility model provides a kind of students' dormitory intelligence electricity-limiter, on technological means, takes precautions against, and has function such as the demonstration in real time that automatically resets, loads.

The utility model provides a kind of students' dormitory intelligence electricity-limiter; Comprise A/D data transaction Acquisition Circuit, main control circuit, display circuit, load control circuit, it is characterized in that: main control circuit is connected with A/D data transaction Acquisition Circuit, display circuit, load control circuit respectively.Whether main control circuit carries out data acquisition through accurate analog comparator in inside and A/D data transaction Acquisition Circuit to load signal, and the data that collect are carried out a series of computings, processing and judgement, thereby used electrical equipment violating the regulations to monitor to the user.If main control circuit does not detect the load that meets electrical equipment characteristic violating the regulations and the total load load less than regulation, thyristor normally, green light are bright always, and display circuit shows current payload; Otherwise main control circuit will be exported cut-off signals, and load control circuit turn-offs thyristor; Display circuit shows HH simultaneously, and red light is lighted, after 10 seconds; The automatic detection load situation of main control circuit, if electrical equipment violating the regulations still exists, main control circuit continues to turn-off controllable silicon; If electrical equipment violating the regulations has been removed, then main control circuit sends Continuity signal, and load control circuit control thyristor restores electricity, and display circuit recovers to show current payload.

The beneficial effect of the utility model is that electrical equipment violating the regulations uses in the prevention students' dormitory, has avoided having higher utility because use the electrical equipment of breaking rules and regulations to cause fire incident.

Description of drawings

Fig. 1 is the theory diagram of the utility model.

Embodiment

In Fig. 1; The utility model provides a kind of students' dormitory intelligence electricity-limiter; Comprise A/D data transaction Acquisition Circuit 1, main control circuit 2, display circuit 3, load control circuit 4, it is characterized in that: main control circuit 2 is connected with A/D data transaction Acquisition Circuit 1, display circuit 3, load control circuit 4 respectively.Whether main control circuit 2 carries out data acquisition through the accurate analog comparator in inside and 1 pair of load signal of A/D data transaction Acquisition Circuit, the data that collect are carried out a series of computings, processing and judgement, thereby used electrical equipment violating the regulations to monitor to the user.If main control circuit 2 does not detect the load that meets electrical equipment characteristic violating the regulations and the total load load less than regulation, thyristor normally, green light are bright always, and display circuit 3 shows current payload; Otherwise main control circuit 2 will be exported cut-off signals, and load control circuit 4 turn-offs thyristor; Display circuit 3 shows HH simultaneously, and red light is lighted, after 10 seconds; Main control circuit 2 automatic detection load situation, if electrical equipment violating the regulations still exists, main control circuit 2 continues to turn-off controllable silicon; If electrical equipment violating the regulations has been removed, then main control circuit sends Continuity signal, and load control circuit 4 control thyristors restore electricity, and display circuit 3 recovers to show current payload.

What main control circuit 2 adopted is the AT89C2051 single-chip microcomputer, AT89C2051 be one have that 2KBFlash is able to programme, the low pressure of EROM (EEPROM), 8 CMOS microcomputers of high-performance.It is used for many embedded Control high flexible and the low solution of cost is provided.Following standard feature can be provided: the 2KBFlash memory; 128 byte RAM; Article 15, I/O goes between; 2 16 bit timing device/counters; 2 grades of interrupt structures of 15 vector; 1 full duplex serial port; 1 accurate analog comparator and sheet internal oscillator and clock circuit.During A/D data transaction Acquisition Circuit 1 power supply electrifying, P1.4 output low level " 0 ", voltage Vc=0 of capacitor C, measured signal U imports from P1.1.Owing to there is U>0, so inner two inputs of comparator of AT89C2051 have P1.0=0, P1.1>0, then comparator output signal is P3.6=" 0 " for " 0 ".Notice that P3.6 only in the inside of AT89C2051, just can have access to software.Then, P1.4 exports high level " 1 ", then through R capacitor C is charged, and the voltage Vc of capacitor C raises along with charging.When arriving Vc=U, then comparator output becoming high level " 1 ", i.e. P3.6=" 1 ".As long as measure the time T when beginning that capacitor C is charged to comparator output high level " 1 ", this time T just can convert the magnitude of voltage of outside tested voltage U to, thereby the A/D that accomplishes voltage changes.That load control circuit 4 mainly adopts is trigger module MOC3041; The unique design structure of MOC3041; Be be specifically designed to trigger single, double to the silicon controlled trigger module; Be the special chip that is used for low voltage logic circuit control high-power device, be specially adapted to being connected of single-chip microcomputer and forceful electric power power interface.Inside separates forceful electric power and weakness through optocoupler; Not only realized the seamless link between the different electric pressures; Also avoided the interference between the strong and weak point; Particularly its set inside the zero cross fired device, avoided because non-zero cross fired causes the pollution of waveform distortion to electrical network, also reduced simultaneously the impact of load to electrical network.Display circuit 3 adopts double figures sign indicating number pipe, and main control circuit 2 scans dynamic demonstration to it, has saved the hardware spending of 89C2051 chip.

Claims

1. the utility model provides a kind of students' dormitory intelligence electricity-limiter; Comprise A/D data transaction Acquisition Circuit (1), main control circuit (2), display circuit (3), load control circuit (4), it is characterized in that: main control circuit (2) is connected with A/D data transaction Acquisition Circuit (1), display circuit (3), load control circuit (4) respectively.