CN208423762U - A kind of fast cut-off circuit security system - Google Patents

Abstract

The utility model discloses a kind of fast cut-off circuit security systems, including input module, first judgment module, second judgment module, filtering module, output module, cut off module, control module, cut off electric device, first comparator and the second comparator, filtering module is connected below input module, connection first comparator and the second comparator below filtering module, first comparator and the second comparator link control module, connection first judgment module and the second judgment module below control module, connection cutting module below first judgment module and the second judgment module, cut off connection cutting electric device below module, it cuts off and connects output module below electric device, this electrical security system structure is simple, it is easy to operate, can circuit in accurate judgement circuit it is whether in a safe condition, and it quickly judges, protect circuit safety.

Description

A kind of fast cut-off circuit security system

Technical field

The utility model relates to circuit safety technical fields, more particularly, to a kind of fast cut-off circuit security system.

Background technique

Electrical equipment in the process of running, because by external influence for example surge, humidity, foreign matter intrusion or because of internal material The defect of material, aging, abrasion, heated, insulation damages and because of reasons such as maloperations in operational process, it is possible to occur various Failure and abnormal operating condition, it is therefore necessary to which electrical equipment is protected.Generally had to the protection of electrical equipment Load protection, short-circuit protection, under-voltage and o-volt protection, open-phase protection and anti-misoperation protection etc..Overload protection refers to electricity consumption The case where load current of equipment is more than rated current.Prolonged overload will make the current carrying part and insulating materials of equipment Excessive heating, to make insulation accelerated ageing or wreck.Equipment have capability of overload i.e. have certain overload and Safe ability is not jeopardized.There will be overload protection to the electric power machine continuously run.Electrical equipment installing automatically cuts off electric current Or the device of increase in current is placed restrictions on, such as automatic air-break switch and have electric current relay of delay etc. as overload protection.And Current most of circuit overload protection equipment or system are more responsible for, and are unable to accurate judgement circuit real-time condition, often result in Erroneous judgement, influences being normally carried out for work.

Utility model content

The technical problems to be solved in the utility model is to overcome the deficiencies of existing technologies, and provides a kind of fast cut-off circuit peace Total system improves judgment accuracy, to solve the above problems by multiple judgement.

To achieve the above object, the utility model provides the following technical solutions: a kind of fast cut-off circuit security system, packet Include input module, first judgment module, the second judgment module, filtering module, output module, cutting module, control module, cutting Electric device, first comparator and the second comparator, connect the filtering module below the input module, under the filtering module Side connects the first comparator and second comparator, the first comparator connect the control with second comparator Molding block, the control module lower section connect the first judgment module and second judgment module, and described first judges mould The cutting module is connected below block and second judgment module, connects the cutting electric device below the cutting module, The output module is connected below the cutting electric device.

As a kind of optimal technical scheme of the utility model, the control module uses MCU processor.

As a kind of optimal technical scheme of the utility model, the first comparator is parallel with second comparator to be set It sets.

As a kind of optimal technical scheme of the utility model, the first judgment module and second judgment module are flat Row setting.

As a kind of optimal technical scheme of the utility model, the first comparator is set using threshold voltage by form It sets, second comparator is arranged using threshold current by form.

As a kind of optimal technical scheme of the utility model, the cutting electric device is arranged using air switch.

Compared with prior art, the utility model has the beneficial effects that this electrical security system structure is simple, operation side Just, can be by way of being respectively compared voltage and current, whether the circuit in accurate judgement circuit is in a safe condition, and fast Speed judges, and protects circuit safety from two dimensions, load regulation and electric energy conservation is increased income and reduced expenditure, and is scientific and reasonable scheduling, is provided effective guarantor Barrier.

Detailed description of the invention

Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.In the accompanying drawings:

Fig. 1 is a kind of fast cut-off circuit safety system logic structure chart described in the utility model.

In figure: 1, input module；2, first judgment module；3, the second judgment module；4, filtering module；5, output module； 6, module is cut off；7, control module；8, electric device is cut off；9, first comparator；10, the second comparator.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment, based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Referring to Fig. 1, the utility model provides a kind of technical solution: a kind of fast cut-off circuit security system, including it is defeated Enter module 1, first judgment module 2, the second judgment module 3, filtering module 4, output module 5, cutting module 6, control module 7, Electric device 8, first comparator 9 and the second comparator 10 are cut off, connects filtering module 4 below input module 1, under filtering module 4 Side's connection first comparator 9 and the second comparator 10,10 link control module 7 of first comparator 9 and the second comparator control mould First judgment module 2 and the second judgment module 3 are connected below block 7, are connected below first judgment module 2 and the second judgment module 3 Module 6 is cut off, connection cutting electric device 8 below module 6 is cut off, cuts off and connect output module 5, control module 7 below electric device 8 Using MCU processor, first comparator 9 and the second comparator 10 are arranged in parallel, first judgment module 2 and the second judgment module 3 It is arranged in parallel, first comparator 9 is arranged using threshold voltage by form, and the second comparator 10 passes through form using threshold current Setting, cutting electric device 8 are arranged using air switch.

Concrete principle: in use, this system is arranged in the circuit for needing to monitor, when electric current enters from input module 1 Afterwards, it is passed into first comparator 9 and the second comparator 10 simultaneously, is compared respectively with the voltage threshold of setting and current threshold Compared with, when voltage and current all in the reasonable scope when, electric current enters control module 7, later enter first judgment module 2 and second Judgment module 3 is passed in circuit finally by cutting module 6 from output module 5, if the long Current Voltage of operating circuit or Electric current is excessive, is more than certain threshold value, control module 7 then can send signal to cutting module 6, to control cutting 8 work of electric device Make, electric current is cut off, to protect circuit safety.

This electrical security system structure is simple, easy to operate, can be by way of being respectively compared voltage and current, accurately Whether the circuit in decision circuitry is in a safe condition, and quickly judges, and protects circuit safety from two dimensions, adjusts lotus section Electricity is increased income and is reduced expenditure, and is scientific and reasonable scheduling, is provided effective guarantee.

Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic It is equivalently replaced, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on, It should be included within the scope of protection of this utility model.

Claims (6)

1. a kind of fast cut-off circuit security system, including input module (1), first judgment module (2), the second judgment module (3), filtering module (4), output module (5), cutting module (6), control module (7), cutting electric device (8), first comparator (9) and the second comparator (10), which is characterized in that the filtering module (4), the mistake are connected below the input module (1) It filters and connects the first comparator (9) and second comparator (10), the first comparator (9) and institute below module (4) It states the second comparator (10) and connects the control module (7), connect the first judgment module below the control module (7) (2) and second judgment module (3), below the first judgment module (2) and second judgment module (3) described in connection It cuts off module (6), the cutting electric device (8) is connected below the cutting module (6), is connected below the cutting electric device (8) Connect the output module (5).

2. a kind of fast cut-off circuit security system according to claim 1, which is characterized in that the control module (7) Using MCU processor.

3. a kind of fast cut-off circuit security system according to claim 1, which is characterized in that the first comparator (9) it is arranged in parallel with second comparator (10).

4. a kind of fast cut-off circuit security system according to claim 1, which is characterized in that the first judgment module (2) it is arranged in parallel with second judgment module (3).

5. a kind of fast cut-off circuit security system according to claim 1, which is characterized in that the first comparator (9) it is arranged using threshold voltage by form, second comparator (10) is arranged using threshold current by form.

6. a kind of fast cut-off circuit security system according to claim 1, which is characterized in that the cutting electric device (8) it is arranged using air switch.