CN2884640Y - Wholl electronic self-resetting integrated circuit guard cell - Google Patents

Abstract

A fully electronic self-reset integrated circuit security unit and its circuit comprises an integrated circuit IC, whose pin-F, B, C, D are respectively connected with two ends of resistor Ra and Rb of outside and inside connecting lines, whose pin-B and C are connected with the inside line a' and b' and whose pin-E and grounding shaft are grounded, and the two outside lines are connected with the self-reset DWK protection switch in series, and said control loop consists of IC, SCR, light emitting diode LED and alarm pin connected, said SCR control panel G is connected with IC alarm output pin S, the anode is grounded and the cathode is connected with the light emitting diode LED. The circuit of the main control loop is simple, with low cost, completely free from the mechanism that components are heated, melted and welded traditionally to control reeds, achieving fully electronic synchronous alarm protection and alarm signal output and greatly increasing the reliability of the security unit, enabling program-controlled switches to be really protected; as long as the outside circuit fault is removed and the security unit is inserted, it can be reused, thereby saving maintenance costs.

Description

All-electronin self-resetting type integrated circuit Security Unit

Technical field

The utility model relates to a kind of Security Unit, and particularly a kind of main frame that is used for telephone office's communication machine room is used to protect the all-electronin self-resetting type integrated circuit Security Unit of equipment such as machine room switch and staff's personal safety.

Background technology

Security Unit is requisite guard block in the modern communications equipment, is mainly used in to prevent that outside line from meeting with thunderbolt or forceful electric power pressure, when heavy current is invaded, protecting the safety of the expensive programme-controlled exchange machine equipment of communication backbone.

Along with the development and the application of integrated circuit on Security Unit of telecommunications industry, the structure of Security Unit is more and more simpler, the continuous miniaturization of volume, and the action sensitivity of Security Unit and reliability are greatly improved.

The patent No. 200420024148.0 " low temperature tin column type integrated package Security Unit "; though a kind of integrated package Security Unit is provided; but it still utilizes soldering clip mode; utilize the temperature rise of device to melt the mechanical type protection switch of scolding tin; the Security Unit of this kind structure will be subjected to all multifactor restrictions and influence; temperature as scolding tin; composition; content; the discreteness influence of cooling time; welding reliability and elastic material; length; width; thickness; geometry; deformation angle; the extent of damage etc. all have uppity discreteness; and can produce electric arc during the mechanical switch tripping; fragile again peripheral devices of the high temperature of electric arc and switch itself are so in fact it also can't be reused by runback.

Patent No. 02257896.X " all-electronin integrated circuit Security Unit " is though what provide is the all-electronin integrated circuit structure; can reuse by runback; protection, alarm are active in one's movements, time synchronized; but it in main control loop except that the connection status latch; also be in series with two alarm relays and make " A, B " end ground connection or open circuit; and used alarm relay is a MOC controllable silicon photoelectrical coupler, manufacturing cost height such as metal-oxide-semiconductor field effect transistor.

Summary of the invention

Technical problem to be solved in the utility model is; a kind of all-electronin self-resetting type integrated circuit Security Unit is provided; thoroughly breaking away from tradition utilizes device heating fusing scolding tin to control the mechanism of reed; the protection and alarm is active in one's movements rapidly, time synchronized; self recovery is reused; and structure is simpler, and use cost is low.

The technical scheme in the invention for solving the above technical problem is: all-electronin self-resetting type integrated circuit Security Unit; its circuit comprises application-specific integrated circuit (ASIC) IC; the pin F of this integrated circuit (IC); pin B is connected to outside line; interior lines a; the two ends of sample resistance Ra on a ' connecting line; and the B pin also is connected with interior lines a '; the pin C of integrated circuit; pin D is connected to outside line; interior lines b; the two ends of sample resistance Rb on b ' connecting line; and the C pin also is connected with interior lines b '; pin E; grounding shaft ground connection; two outside line a; b holds the runback DWK protection switch of connecting respectively; described main control loop is by IC and the controllable silicon MCR and the LED of integrated circuit; alarming axis connects and composes; the described silicon controlled control utmost point G utmost point is connected with integrated circuit (IC) alarm output pin S; anode A ground connection, negative electrode K is connected with LED.

Compared with prior art; the utility model advantage is; this all-electronin self-resetting type integrated circuit Security Unit; adopt the electronic switch structure fully; not only overcome the drawback of mechanical switch contact contact; and thoroughly broken away from the mechanism that tradition utilizes the integrated circuit heating to melt scolding tin; realized all electronic; the output of Synchronize Alarm protection and alarm signal; thereby further improved the reliability of device and whole Security Unit; one-way SCR directly is connected with integrated circuit; save the alarm relay components and parts, greatly reduced production cost, utilized the open circuit effect of DWK not only to guarantee the safety of service cable but also avoided the overheated of protective device; increased substantially the reliability of Security Unit; make stored-program control exchange be subjected to real protection, the staff plugs this Security Unit as long as get rid of outer circuit fault, and Security Unit just can restPose; reuse, saved maintenance cost.

Description of drawings

Fig. 1, circuit diagram of the present utility model.

Fig. 2, user mode reference diagram of the present utility model.

The left view of Fig. 3, Fig. 2.

Embodiment

Embodiment is further described the utility model below in conjunction with accompanying drawing.

LED 10, diode In40079, two sample resistance Ra7, Rb8; one-way SCR MCR6, integrated circuit (IC) 5, two protection switch DWK3,4; stitch 12,13 in two; alarming axis 17 is weldingly fixed on the front surface of printed board 11 successively; and two outer stitches 14,15, grounding shaft 16 is weldingly fixed on the relevant position of lower end, printed board 11 back side.

Adopt CLP200MC application-specific integrated circuit (ASIC) IC5, pin F, the B of this integrated circuit (IC) 5 is connected to the two ends of resistance Ra7 on a, a ' line, and pin C, D are connected on the two ends of the Rb8 of resistance on b, the b ' line.

The control utmost point G of one-way SCR MCR6 is connected with alarm output pin S on the integrated circuit (IC) 5; the E pin of anode A and integrated circuit (IC), grounding shaft 16 ground connection; negative electrode K is connected with the end of LED 10, diode In40079; the end in addition of diode 9 connects and composes the control major loop with the S pin on the integrated circuit (IC) 5; between silicon controlled control utmost point G, negative electrode K, be connected with diode In4007 for improving insulation resistance; the one-port electric protection switch DWK3 that connects respectively at input a, the b place of two outside lines makes open-circuit-protection usefulness, as shown in Figure 1.

The printed board 11 that has assembled is utilized interior stitch 12,13 on it, outer stitch 14,15, alarming axis 17, grounding shaft 16 insert in the base 1 and are fixed into integral body, are installed in to constitute all-electronin self-resetting type integrated circuit Security Unit in the shell 2, as Fig. 2, shown in Figure 3 again.

When circuit produces overcurrent, overcurrent produces a voltage on Ra, when surpassing a certain motivation value, this voltage make the over-current detection in the integrated circuit (IC) drive inner electronic switch, make the overcurrent on the circuit go into ground, S human hair combing waste by integrated circuit (IC) goes out a ground connection alarm signal, and the control utmost point G of introducing one-way SCR MCR6, anode A ground connection because of one-way SCR, when integrated circuit S pin ground connection, be that one-way SCR control utmost point G inserts the electric current positive pole, make one-way SCR trigger and conducting the bright alarm signal of sending of main control loop conducting LED 10 lamps.At this moment, owing to have electric current to flow through for a long time on the DWK, action was open-circuit condition after DWK produced high temperature, cut off outside line, had protected external cable.

Same when overvoltage appears when long in circuit, the electronic switch in the overvoltage drive integrated circult IC moves, and makes the mistake on the circuit be pressed into ground, makes one-way SCR MCR6 conducting equally, makes the luminous outputting alarm signal of LED in the control loop.When transient overvoltage appears in circuit (as thunderbolt, induction etc.), the electronic switch action in the overvoltage drive integrated circult IC makes the mistake on the circuit be pressed into ground, but can not make one-way SCR MCR self-locking simultaneously, does not send alarm signal in the control loop.

Claims (2)

1; a kind of all-electronin self-resetting type integrated circuit Security Unit; its circuit comprises application-specific integrated circuit (ASIC) IC; the pin F of this integrated circuit (IC); pin B is connected to outside line; interior lines a; the two ends of sample resistance Ra on a ' connecting line; and the B pin also is connected with interior lines a '; the pin C of integrated circuit (IC); pin D is connected to outside line; interior lines b; the two ends of sample resistance Rb on b ' connecting line; and the C pin also is connected with interior lines b '; pin E; grounding shaft (16) ground connection; two outside line a; b holds the runback DWK protection switch (3) of connecting respectively; (4); it is characterized in that described main control loop is by integrated circuit (IC) (5) and controllable silicon MCR and LED (10); alarming axis (17) connects and composes; the control utmost point G utmost point of described controllable silicon MCR is connected with integrated circuit (IC) (5) alarm output pin S; anode A ground connection, negative electrode K is connected with LED (10).

2, all-electronin self-resetting type integrated circuit Security Unit according to claim 1 is characterized in that described controllable silicon is one-way SCR MCR (6), also is connected with diode In4007 (9) between control utmost point G, the negative electrode K of one-way SCR MCR (6).