CN202586266U

CN202586266U - Power-saving energy-saving power supply device

Info

Publication number: CN202586266U
Application number: CN 201220265704
Authority: CN
Inventors: 林国祯
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-06-07
Filing date: 2012-06-07
Publication date: 2012-12-05
Anticipated expiration: 2022-06-07

Abstract

The utility model relates to a power-saving energy-saving power supply device which comprises a current load sampling circuit, a delay trigger circuit, a singlechip control circuit, an RS485 communication interface circuit and a power failure circuit. An output signal of the current load sampling circuit is transmitted to the delay trigger circuit; an output signal of the delay trigger circuit is controlled to be sent to the singlechip control circuit and the power failure circuit; an output signal of the singlechip control circuit is sent to the RS485 communication interface circuit; when a load current exceeds a set value, after the load current is delayed by the delay trigger circuit, a load power supply is immediately switched off without reducing the power consumption and warning information is simultaneously sent to a system host by an RS485 system bus, and the warning information reaches a field to notify users and residents after being judged by a professional operator on duty, so that the aim of combining safe power utilization with energy saving is fulfilled.

Description

A kind of electric supply installation of electricity saving and energy saving

Technical field

The utility model relates to a kind of electric supply installation, particularly be a kind of electric supply installation of electricity saving and energy saving.

Background technology

In intensive occasions of personnel such as school or factory's dormitories, because long-term excess load electricity consumption waste electric energy often causes fire because of electricity consumption accidentally.

The utility model content

The purpose of the utility model is to provide a kind of electric supply installation of realizing safety utilization of electric power and the energy-conservation electricity saving and energy saving that combines.

The utility model solves the technical scheme that its technical problem adopted: a kind of electric supply installation of electricity saving and energy saving; Comprise current capacity sample circuit, delay trigger circuit, single chip machine controlling circuit, RS485 communication interface circuit and power-down circuit; The output signal of said current capacity sample circuit transfers to delay trigger circuit; The output signal controlling of said delay trigger circuit is sent to single chip machine controlling circuit and power-down circuit, and the output signal of said single chip machine controlling circuit is sent to the RS485 communication interface circuit.

Preferably; Said current capacity sample circuit is made up of diode VD2, capacitor C3, resistance R 1, the potentiometer RP that current transformer TA and output thereof connect; The winding of said current transformer TA is serially connected in the end of incoming cables of electricity consumption power line; Diode VD2 is parallelly connected with capacitor C3, and is parallelly connected with the series circuit of potentiometer RP with resistance R 1 again.

Preferably, said delay trigger circuit is made up of resistance R 3, capacitor C 4, resistance R 4, the capacitor C 6 that 555 time-base circuit U1 and output thereof connect.

Preferably, said power-down circuit connects triode VT by voltage-stabiliser tube VS2 and constitutes, and the output of said triode VT is connected to 555 time-base circuit U1.

Preferably, said RS485 communication interface circuit is connected to the COM end of RS485 communication interface through SN75176 communication interface chip IC2.

Through adopting above-mentioned technical scheme, the beneficial effect of the utility model is: when load current surpasses set point, after the delay trigger circuit time-delay; Do not reduce power consumption, just cut off load power source immediately, simultaneously through the RS485 system bus; Send warning information to system host; After professional operator on duty judges, reach the spot and notify the user resident family, reach safety utilization of electric power and the energy-conservation purpose that combines.

Description of drawings

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

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

Embodiment

Like Fig. 1, shown in Figure 2; The electric supply installation of a kind of electricity saving and energy saving of the utility model; Comprise current capacity sample circuit 1, delay trigger circuit 2, single chip machine controlling circuit 3, RS485 communication interface circuit 4 and power-down circuit 5; The output signal of said current capacity sample circuit 1 transfers to delay trigger circuit 2; The output signal controlling of said delay trigger circuit 2 is sent to single chip machine controlling circuit 3 and power-down circuit 5, and the output signal of said single chip machine controlling circuit 3 is sent to RS485 communication interface circuit 4.

Said current capacity sample circuit 1 is made up of diode VD2, capacitor C3, resistance R 1, the potentiometer RP that current transformer TA and output thereof connect; The winding of said current transformer TA is serially connected in the end of incoming cables of electricity consumption power line, and its secondary induced current is directly proportional with home-use electric weight.Diode VD2 is parallelly connected with capacitor C3; Parallelly connected with resistance R 1 again with the series circuit of potentiometer RP; Said delay trigger circuit 2 is made up of resistance R 3, capacitor C 4, resistance R 4, the capacitor C 6 that 555 time-base circuit U1 and output thereof connect; Said power-down circuit 5 connects triode VT by voltage-stabiliser tube VS2 and constitutes, and the output of said triode VT is connected to 555 time-base circuit U1.

Under the situation of normal electricity consumption, because electric current in allowed limits, the sampling voltage of current transformer TA secondary side output is lower, and the dividing potential drop deficiency that obtains through potentiometer RP is so that voltage-stabiliser tube VS2 punctures, and triode VT is in cut-off state.At this moment delay trigger circuit 2 is in stable state, and the relay K that 555 time-base circuit U1 outputs connect discharges, and break contact is power connection, the circuit normal power supply.

When power load surpasses maximum permissible limit; Voltage through current transformer TA sampling raises, and at this moment voltage-stabiliser tube VS2 punctures, triode VT conducting; Its collector electrode output low level makes 555 time-base circuit U1 upset; 555 time-base circuit U1 upset back gets into temporary stable state time-delay process, and the resistance R 4 that 555 time-base circuit U1 outputs connect, the decision of the numerical value of capacitor C 6 are set at 8～10min here.After time-delay finished, 555 time-base circuit U1 overturn again, and output becomes low level, and relay K discharges connects load power source again with power supply circuits.The 3rd pin output high level of 555 time-base circuit U1 makes relay K energising adhesive, and normally closed point transfers normal battle to, cuts off load power source, stops power supply.Because the 3rd pin of 555 time-base circuit U1 output high level signal; This signal is input to the 32nd pin I/O end of single-chip microcomputer IC1, after single-chip microcomputer IC1 internal processes logic determines through resistance R 6 current limlitings; Form RS485 communication interface circuit 4 by SN75176 communication interface chip IC2 the 1st, 2,3,4 ends and single-chip microcomputer IC1 the 10th, 11,25 ends; After SN75176 communication interface chip IC2 decoding, transmit current state information to the system host configuration software, show current warning message; Realize remote monitoring load load electricity consumption situation, make energy-conservation and the safety utilization of electric power reasonable combination.

An above-described preferred embodiment that is merely the utility model can not limit the scope that the utility model 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. the electric supply installation of an electricity saving and energy saving; It is characterized in that: comprise current capacity sample circuit (1), delay trigger circuit (2), single chip machine controlling circuit (3), RS485 communication interface circuit (4) and power-down circuit (5); The output signal of said current capacity sample circuit (1) transfers to delay trigger circuit (2); The output signal controlling of said delay trigger circuit (2) is sent to single chip machine controlling circuit (3) and power-down circuit (5), and the output signal of said single chip machine controlling circuit (3) is sent to RS485 communication interface circuit (4).

2. the electric supply installation of electricity saving and energy saving according to claim 1; It is characterized in that: said current capacity sample circuit (1) is made up of diode VD2, capacitor C 3, resistance R 1, the potentiometer RP that current transformer TA and output thereof connect; The winding of said current transformer TA is serially connected in the end of incoming cables of electricity consumption power line; Diode VD2 is parallelly connected with capacitor C3, and is parallelly connected with the series circuit of potentiometer RP with resistance R 1 again.

3. the electric supply installation of electricity saving and energy saving according to claim 1 is characterized in that: said delay trigger circuit (2) is made up of resistance R 3, capacitor C 4, resistance R 4, the capacitor C 6 that 555 time-base circuit U1 and output thereof connect.

4. the electric supply installation of electricity saving and energy saving according to claim 3 is characterized in that: said power-down circuit (5) connects triode VT by voltage-stabiliser tube VS2 and constitutes, and the output of said triode VT is connected to 555 time-base circuit U1.

5. the electric supply installation of electricity saving and energy saving according to claim 1 is characterized in that: said RS485 communication interface circuit (4) is connected to the COM end of RS485 communication interface through SN75176 communication interface chip IC2.