CN202083728U

CN202083728U - Ammeter case wireless detecting system

Info

Publication number: CN202083728U
Application number: CN2011202000031U
Authority: CN
Inventors: 蒋正坤
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-15
Filing date: 2011-06-15
Publication date: 2011-12-21
Anticipated expiration: 2021-06-15

Abstract

The utility model relates to the field of electronic technology, particularly to an ammeter case wireless detecting system. The wireless detecting system comprises a current signal detecting circuit, a trigger circuit, and a one-chip microcomputer control circuit, wherein the output signals of the current signal detecting circuit are transmitted to an A\D data converting circuit; and the output signals of the A\D data converting circuit and the trigger circuit are controlled and transmitted to a power supply drive circuit and a wireless transmit-receive circuit via the one-chip microcomputer control circuit. When the power consumption exceeds the rated current value, the signals collected by a current transformer, after receiving A\D data transformation, are transmitted to the one-chip microcomputer control circuit and alarm signals are emitted to the host via a wireless transmitting module, thereby displaying the current alarm information. when the faults are removed, the power supply can be automatically recovered. When the distribution box is forced to open, the system emits switching out signals and alarm signals to inform the personnel on duty to handle what happened, thereby realizing intellectualized monitoring.

Description

Ammeter box wireless sensing system

Technical field

The utility model relates to electronic technology field, particularly be a kind of ammeter box wireless sensing system.

Background technology

China is the consumption big country that electric power energy is produced, it is again GDP big country with the fastest developing speed, country has dropped into a large amount of financial resources and has been used for electric network reconstruction, but power consumption is being increased always, and ammeter box is the important evidence of power consumption, but some illegal users, ammeter box is carried out stealing, if ammeter box is sealed, just in case the overload phenomenon appears in circuit, can not open ammeter box again, will run out of.

The utility model content

The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of ammeter box wireless sensing system is provided.

The technical scheme that its technical matters that solves the utility model adopts is: ammeter box wireless sensing system, comprise current signal detection circuit, trigger circuit and single chip machine controlling circuit, the output signal of described current signal detection circuit transfer to A the D data converting circuit, A the output signal of D data converting circuit and trigger circuit export power driving circuit, wireless transceiver circuit to through single chip machine controlling circuit control.

After described current signal detection circuit sends to dividing potential drop, filtering by the signal of current sensor collection, current-limiting circuit constitutes.

Described trigger circuit are made of the output terminal connection photoelectricity coupled circuit of trigger switch.

Described wireless transceiver circuit is made of FDD-5 transmitter module, JDD-5 receiver module, external light emitting diode and the loudspeaker of JDD-5 receiver module.

By adopting above-mentioned technical scheme, the beneficial effects of the utility model are: when power consumption surpasses load current value, the signal that current transformer is gathered is after the A/D data-switching, be sent to single chip machine controlling circuit, send alerting signal by wireless transmitter module to main frame, show current warning message, after fault is got rid of, automatic recovery of power supply; When personnel opened the distribution chamber door by force, system sent power-off signal and alerting signal, notified the operator on duty processing to Electrical Safety, realized Intellectualized monitoring.

Description of drawings

Fig. 1 is a frame assumption diagram of the present utility model;

Fig. 2 is circuit theory diagrams of the present utility model.

Embodiment

As shown in Figure 1, ammeter box wireless sensing of the present utility model system, comprise current signal detection circuit 1, trigger circuit 2 and single chip machine controlling circuit 3, the output signal of described current signal detection circuit 1 transfer to A D data converting circuit 11, A the output signal of D data converting circuit 11 and trigger circuit 2 export power driving circuit 31, wireless transceiver circuit 32 to through single chip machine controlling circuit 3 controls.

As shown in Figure 2, when the load power consumption surpasses load current value, current sensor LN produces induced voltage signal, this signal is through potentiometer W1 dividing potential drop, after capacitor C 1 filtering, resistance R 1 current limliting, this signal is input to the 2nd pin input end of A/D data-switching chip IC 2, after A/D data-switching chip IC 2 inner A/D data-switching, signal is input to single-chip microcomputer IC1 the 36th, 37,38 pin, read the voltage data of A/D data-switching chip IC 3 through single-chip microcomputer IC1 after, when the processing of single-chip microcomputer IC1 internal processes is judged as excess current, behind single-chip microcomputer IC1 internal delay time, the 26th pin output low level by single-chip microcomputer IC1 ends triode T1 through resistance R 5 current limlitings, relay J 1 discharges, its contact J1-1 also transfers normal battle to, and the breaker device dead electricity is cut off load power source simultaneously; The 24th pin output high level of another route single-chip microcomputer IC1 through resistance R 10 current limlitings, makes triode Q1 conducting, is input to the 2nd pin of FDD-5 transmitter module IC3, and delivers to its 3rd pin CP modulation signal input end, and the high-frequency signal of emission is modulated.Antenna TX promptly launches modulated frequency electromagnetic waves to JDD-5 receiver module IC4.The 4th pin CPA audio signal output end of JDD-5 receiver module IC4 directly drives common electrical dynamic formula loudspeaker Y and sends chimes of doom, and its 2nd pin data output end output high level makes LED 1 get electroluminescence simultaneously, and expression receives the alerting signal of extension set.

When load current is reduced to rated current, single-chip microcomputer IC1 reads the data message of A/D data-switching chip IC 2, when the processing of single-chip microcomputer IC1 internal processes is judged as normal value, the 26th pin output high level of single-chip microcomputer IC1, make triode T1 conducting through resistance R 5 current limlitings, relay J 1 adhesive, its contact J1-1 also transfers normally closed point to, breaker device gets electric, connects load power source.

When personnel when by force the distribution chamber door being opened, trigger switch K1 is off-state, photoelectricity coupled circuit U1 is in cut-off state, just be in high level state, the 1st pin I/O end that this signal is input to single-chip microcomputer IC1 also is high level, read through single-chip microcomputer IC1 inside, and be judged as the people and opened chamber door by force, promptly send control signal,, triode T1 is ended through resistance R 5 current limlitings by single-chip microcomputer IC1 the 26th pin output low level, relay J 1 discharges, its contact J1-1 also transfers normal battle to, and the breaker device dead electricity is cut off load power source simultaneously; The 24th pin output high level of another route single-chip microcomputer IC1 through resistance R 10 current limlitings, makes triode Q1 conducting, is input to the 2nd pin of FDD-5 transmitter module IC3, and delivers to its 3rd pin CP modulation signal input end, and the high-frequency signal of emission is modulated.Antenna TX promptly launches modulated frequency electromagnetic waves to JDD-5 receiver module IC4.The 4th pin CPA audio signal output end of JDD-5 receiver module IC4 directly drives common electrical dynamic formula loudspeaker Y and sends chimes of doom, its the 2nd pin data output end is exported high level simultaneously, make LED 1 get electroluminescence, expression receives the alerting signal of extension set, and people's ammeter chamber door of doing manual work by force has been described.

Above-described only is a preferred embodiment of the present utility model, can not limit the scope that this practicality is implemented, and every equalization of being done according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.

Claims

1. ammeter box wireless sensing system, it is characterized in that: comprise current signal detection circuit (1), trigger circuit (2) and single chip machine controlling circuit (3), the output signal of described current signal detection circuit (1) transfer to A D data converting circuit (11), A the output signal of D data converting circuit (11) and trigger circuit (2) export power driving circuit (31), wireless transceiver circuit (32) to through single chip machine controlling circuit (3) control.

2. ammeter box wireless sensing according to claim 1 system is characterized in that: after described current signal detection circuit (1) sends to dividing potential drop, filtering by the signal of current sensor collection, current-limiting circuit constitutes.

3. ammeter box wireless sensing according to claim 1 system is characterized in that: described trigger circuit (2) connect the photoelectricity coupled circuit by the output terminal of trigger switch and constitute.

4. ammeter box wireless sensing according to claim 1 system, it is characterized in that: described wireless transceiver circuit (32) is made of FDD-5 transmitter module, JDD-5 receiver module, external light emitting diode and the loudspeaker of JDD-5 receiver module.