CN201946965U - Loop system for clearing overloading fault or short circuiting fault - Google Patents
Loop system for clearing overloading fault or short circuiting fault Download PDFInfo
- Publication number
- CN201946965U CN201946965U CN2011200661241U CN201120066124U CN201946965U CN 201946965 U CN201946965 U CN 201946965U CN 2011200661241 U CN2011200661241 U CN 2011200661241U CN 201120066124 U CN201120066124 U CN 201120066124U CN 201946965 U CN201946965 U CN 201946965U
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- circuit
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- loop
- detecting unit
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Abstract
The utility model discloses a loop system for clearing an overloading fault or a short circuiting fault, which is characterized by comprising a detecting unit for overloading and short circuiting, an operating unit and a loop controlling unit. The detecting unit for the overloading and the short circuiting is composed of a detecting circuit which is connected with the operating unit. The operating unit is formed by connecting an I/O (input / output) expander I, a singlechip and an I/O expander II in sequence and in series, and the two I/O expanders are connected with the detecting unit and a circuit controlling unit respectively. The loop controlling unit is formed by connecting a triode and a relay in series, and the triode is connected with the operating unit. Due to an adoption of the technical scheme, without affecting a self circuit structure of the loop, the loop system for clearing the overloading fault or the short circuiting fault realizes that a power supplying of a whole electrical appliance can be recovered in a millisecond-staged period by a fact that each loop is provided with the detecting circuit. The loop system is simple in structure and low in cost, thereby being convenient to use in a large scale and applicable to popularize widely.
Description
Technical field
The utility model relates to a kind of Circuits System, relates in particular to a kind of system of excising overload or excision short trouble loop.
Background technology
At present in convertor equipment in order to guarantee the convertor equipment nonoverload or the damage that is not short-circuited, when overload or short trouble take place, close the output of entire equipment.Though can protect whole current flow devices like this, can cause under the situation of many output loops, the loop of generation overload or short circuit is the while dead electricity also.Bring unnecessary power supply trouble.
Summary of the invention
The utility model is at the proposition of above problem, and a kind of system of excising overload or excision short trouble loop of development, the technical scheme of employing is as follows:
A kind of system of excising overload or excision short trouble loop is characterized in that: comprise overload, short-circuit detecting unit, arithmetic element and circuit controls unit;
Described overload, short-circuit detecting unit are made up of testing circuit, and this testing circuit connects described arithmetic element;
Described arithmetic element is by the I/O expander, single-chip microcomputer, and the I/O expander is in series successively, and two I/O expanders connect described detecting unit and circuit control unit respectively;
Described circuit controls unit is in series by triode, relay, and this triode connects described arithmetic element.
Described overload, short-circuit detecting unit comprise current transformer CT, rectifier and voltage comparator ic 1:
Described current transformer CT is with resistance R 1 parallel connection, and its output is connected to the input of rectifier; The output of described rectifier series resistance R2, parallel resistance R3 and shunt voltage successively keeps being connected on the input I of voltage comparator ic 1 after the capacitor C 1; The input II of described voltage comparator ic 1 is connected on the benchmark circuit that is made of resistance R 4 and rheostat R5; The output of voltage comparator ic 1 is as the output of overload, short-circuit detecting unit.
Comprise between overload, short-circuit detecting unit, arithmetic element and the circuit controls unit and being electrically connected.
Owing to adopted technique scheme, a kind of system in overload or excision short trouble loop of excising is by being provided with testing circuit on each loop, under the situation of the circuit structure that does not influence loop self, realized in the time of Millisecond, recovering the power supply of whole electrical appliance.Because it is simple in structure, not only be convenient to large-scale application, and cost is very cheap is suitable for extensive popularization.
Description of drawings
Fig. 1 is way circuit figure of the present utility model;
Fig. 2 is the circuit diagram of the utility model detecting unit;
Fig. 3 is a logic diagram of the present utility model.
Embodiment
By Fig. 1～shown in Figure 3,1, a kind of system of excising overload or excision short trouble loop, it is characterized in that: comprise overload, short-circuit detecting unit, arithmetic element and circuit controls unit;
Overload, short-circuit detecting unit are made up of testing circuit, and this testing circuit connects described arithmetic element; Described current transformer CT is with resistance R 1 parallel connection, and its output is connected to the input of rectifier; The output of described rectifier series resistance R2, parallel resistance R3 and shunt voltage successively keeps being connected on the input I of voltage comparator ic 1 after the capacitor C 1; The input II of described voltage comparator ic 1 is connected on the benchmark circuit that is made of resistance R 4 and rheostat R5; The output of voltage comparator ic 1 is as the output of overload, short-circuit detecting unit.The concrete course of work is as follows: at first sent by current transformer CT sampling and send into voltage by D1-D4 after behind the rectifier rectification and keep capacitor C 1 to maintain sampled signal, through relatively back output of IC1.
Arithmetic element is by I/O expander I, single-chip microcomputer, and I/O expander II is in series successively, and two I/O expanders connect described detecting unit and circuit control unit respectively.Behind the comparison signal of I/O expander reception that connects described overload, short-circuit detecting unit by voltage comparator ic 1 output, import information into single-chip microcomputer, single-chip microcomputer is analyzed the signal that each loop is transmitted, whether there are short circuit or overload to judge to each loop, after finishing, judgement sends signal, import described I/O expander II the address is resolved, and send signal to the loop of short circuit or overload generation.
The signal that the triode of circuit controls unit receives I/O expander II transmission amplifies, and then control relay, and described relay is a normally closed switch, after receiving amplifying signal, and switch opens, whole loop disconnects.
After the contactor that is short-circuited or transships disconnected, single-chip microcomputer sent start-up command to reverting equipment, to the loop power supply that does not break down.So owing to have only tens ms can satisfy practical application to the equipment that some do not require continuous power supply from detecting the answer power-on time.
The above; it only is the preferable embodiment of the utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and inventive concept thereof, all should be encompassed within the protection range of the present utility model.
Claims (3)
1. a system of excising overload or excision short trouble loop is characterized in that: comprise overload, short-circuit detecting unit, arithmetic element and circuit controls unit;
Described overload, short-circuit detecting unit are made up of testing circuit, and this testing circuit connects described arithmetic element;
Described arithmetic element is by I/O expander I, single-chip microcomputer, and I/O expander II is in series successively, and two I/O expanders connect described detecting unit and circuit control unit respectively;
Described circuit controls unit is in series by triode, relay, and this triode connects described arithmetic element.
2. the system in a kind of automatic selection excision overload according to claim 1 or short trouble loop, its feature also is: described overload, short-circuit detecting unit comprise current transformer CT, rectifier and voltage comparator ic 1:
Described current transformer CT is with resistance R 1 parallel connection, and its output is connected to the input of rectifier; The output of described rectifier series resistance R2, parallel resistance R3 and shunt voltage successively keeps being connected on the input I of voltage comparator ic 1 after the capacitor C 1; The input II of described voltage comparator ic 1 is connected on the benchmark circuit that is made of resistance R 4 and rheostat R5; The output of voltage comparator ic 1 is as the output of overload, short-circuit detecting unit.
3. the system in a kind of automatic selection excision overload according to claim 1 or short trouble loop, its feature also is: comprise between overload, short-circuit detecting unit, arithmetic element and the circuit controls unit being electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200661241U CN201946965U (en) | 2011-03-15 | 2011-03-15 | Loop system for clearing overloading fault or short circuiting fault |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200661241U CN201946965U (en) | 2011-03-15 | 2011-03-15 | Loop system for clearing overloading fault or short circuiting fault |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201946965U true CN201946965U (en) | 2011-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200661241U Expired - Fee Related CN201946965U (en) | 2011-03-15 | 2011-03-15 | Loop system for clearing overloading fault or short circuiting fault |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201946965U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102790380A (en) * | 2012-08-01 | 2012-11-21 | 大连东方电力设备有限公司 | Method suitable for intelligent electronic circuit breaker adopting inverter power supply as power supply |
| CN103683493A (en) * | 2013-11-13 | 2014-03-26 | 国网河南省电力公司南阳供电公司 | Power electronic equipment failure self-healing device |
-
2011
- 2011-03-15 CN CN2011200661241U patent/CN201946965U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102790380A (en) * | 2012-08-01 | 2012-11-21 | 大连东方电力设备有限公司 | Method suitable for intelligent electronic circuit breaker adopting inverter power supply as power supply |
| CN103683493A (en) * | 2013-11-13 | 2014-03-26 | 国网河南省电力公司南阳供电公司 | Power electronic equipment failure self-healing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIAN YE Free format text: FORMER OWNER: DALIAN EAST ELECTRIC EQUIPMENT CO., LTD. Effective date: 20131211 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20131211 Address after: Dalian City, Liaoning Province in 116041 Lushun district innovation Street No. 23-2 Patentee after: Tian Ye Address before: Dalian City, Liaoning Province in 116041 Lushun district innovation Street No. 23-2 Patentee before: Dalian East Electric Equipment Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20150315 |
|
| EXPY | Termination of patent right or utility model |