CN2881918Y

CN2881918Y - Key display device of switch cabinet of converting station

Info

Publication number: CN2881918Y
Application number: CN 200620023407
Authority: CN
Inventors: 刘征
Original assignee: 孙宝剑
Priority date: 2006-01-17
Filing date: 2006-01-17
Publication date: 2007-03-21
Anticipated expiration: 2016-01-17

Abstract

The utility model relates to a key display device of switch cabinet of converting station. The utility model is suitable for the switch on the switch cabinet in converting station of electrical system and comprises a key-state testing circuit, a control and display circuit. The key-state testing circuit is connected to the control and display circuit through an interface circuit, and is composed of a key-state circuit, an SCM and an interface circuit; the output terminal of the key-state circuit is connected to the SCM linked to the interface circuit; the control and display circuit comprises an SCM, an interface circuit, a LED(light-emitting diode) display circuit, a sound alarming circuit, and the SCM , through its own interface circuit, is connected to the interface circuit of the key-state testing circuit, the output terminal of the SCM is connected to the LED display and the sound alarming circuit. The benefit effect of this utility model is that the electrical device can be ensured to run safely and the management level in converting station is greatly enhanced.

Description

Transformer substation switch cabinet key display unit

Technical field

The utility model relates to a kind of transformer substation switch cabinet key display unit, is applicable to power system transformer substation, on the switch of switch cubicle.

Technical background

In the transformer station of electric power system, the switchyard multichannel power distribution cabinet is arranged at home, need the person on duty to operate, carry out each transmission or not work along separate routes, for the electricity that prevents to misdeliver causes the security incident at meaning place, each knife switch all has been equipped with corresponding lockset and private key, but key all is to be suspended on the chart board in routine duties, very lack of standardization, mix meat and fish dishes easily, lose and very easily cause potential safety hazard, be unfavorable for safe operation.

Summary of the invention

Technical problem to be solved in the utility model provides and a kind ofly can guarantee power equipment safety operation and have the transformer substation switch cabinet key display unit of intelligent management.

The technical scheme that its technical problem that solves the utility model adopts:

The utility model is made up of key state detection circuit, control and display circuit; The key state detection circuit is connected with control and display circuit by interface circuit;

The key state detection circuit is made up of key state Acquisition Circuit, single-chip microcomputer, interface circuit; The output of key state Acquisition Circuit connects single-chip microcomputer, and single-chip microcomputer is connected with interface circuit;

Control and display circuit are made up of single-chip microcomputer, interface circuit, charactron display circuit, sound alarm circuit; Single-chip microcomputer is connected with interface circuit in the key state detection circuit by its interface circuit, and the output of single-chip microcomputer connects the input of charactron display circuit and sound alarm circuit respectively.

The beneficial effects of the utility model are to guarantee the safe operation of power equipment, have improved the managerial skills of transformer station simultaneously greatly.

Description of drawings

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

Fig. 2 is the schematic diagram of key state detection circuit

Fig. 3 is the schematic diagram of control and display circuit

Embodiment

By the embodiment shown in Fig. 1-3 as can be known, it is made up of key state detection circuit, control and display circuit; The key state detection circuit is connected with control and display circuit by interface circuit;

Key state Acquisition Circuit in the key testing circuit of present embodiment by with the key ring J10-J16 of sensitive switch interlock, incorporate the shift register of going here and there out into and form; The key ring that each and sensitive switch link is hung 8 keys; Incorporating the shift register of going here and there out into is made up of ic chip 11-IC17; 9 pin of the 1st ic chip 11 connect 1 pin of single-chip microcomputer IC10, and 10 pin of the 1st ic chip 11 connect 9 pin of the 2nd ic chip 12, the back and the like, 15,1 pin of ic chip 11-IC17 is attempted by on 2,3 pin of single-chip microcomputer IC10; The 11-14 of the 1st ic chip 11,3-6 pin connect the 1st the 1-8 pin with the key ring J10 of sensitive switch interlock respectively, the back and the like;

Interface circuit in the key state detection circuit is made up of 485 chip IC 18, bus interface J17,1,2 pin of bus interface J17 connect 6,5 pin of 485 interface chip IC18,1,2,4 pin of 485 interface chip IC18 connect 10,8,11 pin of single-chip microcomputer IC10 respectively, and 3 pin of 485 interface chip IC18 are connected with 2 pin; Crystal Y10, capacitor C 10-C12, resistance R 10 are the peripheral cell of single-chip microcomputer IC10.

The control of present embodiment and the interface circuit in the display circuit are made up of 485 interface chip IC2, bus interface J1; Bus interface J1 is connected with bus interface J17 in the key state detection circuit, 1,2 pin of bus interface J1 are connected with 6,5 pin of 485 interface chip IC2 respectively, 1,2,4 pin of 485 interface chips are connected with 10,8,11 pin of single-chip microcomputer IC1 respectively, and 3 pin of 485 interface chip IC2 are connected with 2 pin;

The charactron display circuit is made up of charactron DS1-DSn+7, SI PO shift register; Seal in and go out mobile register and form by ic chip 3-ICn, 11,12 pin of ic chip 1-ICn are attempted by on 2,3 pin of single-chip microcomputer IC1,14 pin of the 1st ic chip 3 connect 1 pin of single-chip microcomputer IC1,9 pin of the 1st ic chip 3 connect 14 pin of the 2nd ic chip 4, the back and the like; Each piece integrated package connects 8 charactrons, the 1st ic chip 3 15, the 1-7 pin is connected with charactron DS1-DS8 common port 9 pin respectively, the back and the like, each of each charactron section adopts fixedly connection, 1-6 pin as charactron DS1 meets Vcc, the 7 pin ground connection of charactron DS1;

Sound alarm circuit is made up of transistor Q1, resistance R 1, buzzer B1; The base stage of transistor Q1 connects 21 pin of single-chip microcomputer IC1 through resistance R 1, and buzzer B1 is connected between the collector electrode and ground of transistor Q1, and the emission of transistor Q1 meets Vcc;

Crystal Y1, capacitor C 1-C3, resistance R 2 are the peripheral cell of single-chip microcomputer IC1.

The course of work of present embodiment (being exemplified below):

The key ring (J10-J16) that each and sensitive switch link is gone up and is hung 8 keys, after No. 1 key on the J10 is removed, with No. 1 corresponding sensitive switch action of key, and making the level of respective pin of the IC11 of the shift register that is connected with this sensitive switch is high level, signal on the parallel port of IC11 is: " 00000001 ", after single-chip microcomputer IC10 in the key state detection circuit reads these data, and by 485 buses with these data deliver to control and display circuit in single-chip microcomputer IC1, after handling, IC1 delivers to the charactron display circuit, and by charactron DS1-DS3 demonstrate " 001 " and the flicker, illustrate that promptly No. 1 key on the J10 is removed: meanwhile, acoustic alarm signal of 21 pin output of single-chip microcomputer IC1, this signal is delivered to buzzer B1 after transistor Q1 amplifies, B1 sends the voice signal of " toot-toot ", to remind team member on duty.

Claims

1, a kind of transformer substation switch cabinet key display unit is characterized in that it is made up of key state detection circuit, control and display circuit; The key state detection circuit is connected with control and display circuit by interface circuit;

2, transformer substation switch cabinet key display unit according to claim 1, it is characterized in that in the key testing circuit key state Acquisition Circuit by with the key ring J10-J16 of sensitive switch interlock, incorporate the shift register of going here and there out into and form; The key ring that each and sensitive switch link is hung 8 keys; Incorporating the shift register of going here and there out into is made up of ic chip 11-IC17; 9 pin of the 1st ic chip 11 connect 1 pin of single-chip microcomputer IC10, and 10 pin of the 1st ic chip 11 connect 9 pin of the 2nd ic chip 12, the back and the like, 15,1 pin of ic chip 11-IC17 is attempted by on 2,3 pin of single-chip microcomputer IC10; The 11-14 of the 1st ic chip 11,3-6 pin connect the 1st the 1-8 pin with the key ring J10 of sensitive switch interlock respectively, the back and the like;

Interface circuit in the key state detection circuit is made up of 485 chip IC 18, bus interface J17,1,2 pin of bus interface J17 connect 6,5 pin of 485 interface chip IC18,1,2,4 pin of 485 interface chip IC18 connect 10,8,11 pin of single-chip microcomputer IC10 respectively, and 485 3 pin that connect chip IC 18 are connected with 2 pin; Crystal Y10, capacitor C 10-C12, resistance R 10 are the peripheral cell of single-chip microcomputer IC10.

3, transformer substation switch cabinet key display unit according to claim 2, it is characterized in that controlling and display circuit in interface circuit form by 485 interface chip IC2, bus interface J1; Bus interface J1 is connected with bus interface J17 in the key state detection circuit, 1,2 pin of bus interface J1 are connected with 6,5 pin of 485 interface chip IC2 respectively, 1,2,4 pin of 485 interface chips are connected with 10,8,11 pin of single-chip microcomputer IC1 respectively, and 3 pin of 485 interface chip IC2 are connected with 2 pin;