CN213149178U - Circuit for detecting state of circuit breaker in real time - Google Patents
Circuit for detecting state of circuit breaker in real time Download PDFInfo
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- CN213149178U CN213149178U CN202021778457.2U CN202021778457U CN213149178U CN 213149178 U CN213149178 U CN 213149178U CN 202021778457 U CN202021778457 U CN 202021778457U CN 213149178 U CN213149178 U CN 213149178U
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Abstract
The utility model discloses a circuit breaker state real-time detection circuit, include: the circuit breaker comprises an alternating current relay, a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a; one end of the current-limiting resistor is connected with the first public end, and the other end of the current-limiting resistor is connected with the anode of the direct-current power supply; and the controller is used for controlling the audible and visual alarm to work and stop according to the voltage of the first common end. The embodiment of the utility model provides a circuit breaker state real-time detection circuit, the circuit is simple, low cost, easy realization to can the state of real-time detection circuit breaker, and show the position of circuit breaker, be convenient for maintain through audible-visual annunciator.
Description
Technical Field
The utility model belongs to the technical field of the state detects, especially, relate to a circuit breaker state real-time detection circuit.
Background
An EPS (Emergency Power Supply) system mainly comprises a rectifier charger, a storage battery pack, an inverter, an inter-switching device, a system controller and the like. The inverter is a core, and usually adopts DSP or a single-chip CPU to carry out SPWM modulation control on an inversion part so as to obtain good alternating current waveform output; the rectifier charger is used for charging the storage battery pack in time when the mains supply input is normal; the inverter is used for converting the direct current electric energy stored in the storage battery into alternating current to be output when the commercial power is abnormal, and supplying stable and continuous electric power to load equipment; the mutual switching device ensures the smooth switching of the load between the commercial power and the output of the inverter; the system controller controls the whole system in real time, can send out fault alarm signals and receive remote linkage control signals, and can realize remote monitoring of the EPS emergency power supply system through an upper computer through a standard communication interface.
In an EPS emergency power supply system, it is general to detect the state of each breaker in the power supply system and to give an alarm. In the prior art, an auxiliary contact is usually added on the circuit breaker, and the state of the circuit breaker is detected by detecting the state of the auxiliary contact, however, the detection method has high cost.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a circuit breaker state real-time detection circuit, through independently designing the circuit, need not to increase auxiliary contact on the circuit breaker, also can real-time detection circuit breaker state, reduced the detection cost.
To achieve the purpose, the utility model adopts the following technical proposal:
in a first aspect, the utility model provides a circuit breaker state real-time detection circuit, include:
the circuit breaker comprises an alternating current relay, a first common end, a normally open end and a normally closed end, wherein one end of a primary coil of the alternating current relay is connected with one end of the circuit breaker, the other end of the circuit breaker is connected with a phase line of a working power supply, the other end of the primary coil of the alternating current relay is connected with a zero line of the working power supply, the alternating current relay is provided with a contact set, the contact set comprises the first common end, the normally open end and the normally closed end, the normally closed end is floated, the normally open end is connected with the second common end, or the normally closed end is connected with the;
one end of the current-limiting resistor is connected with the first public end, and the other end of the current-limiting resistor is connected with the anode of the direct-current power supply;
the controller is connected with the first public end and electrically connected with an audible and visual alarm, and the controller is used for controlling the audible and visual alarm to work and stop according to the voltage of the first public end.
As an optional technical solution of the present invention, the controller is a DSP controller.
As an optional technical scheme of the utility model, the current-limiting resistor is the series-parallel combination of single resistance or two above resistances.
As an optional technical scheme of the utility model, alternating current relay's rated operating voltage is 220 VAC.
In a second aspect, the utility model also provides a circuit breaker state real-time detection circuit, include:
the direct current relay is provided with a contact group, the contact group comprises a first public end, a normally-closed end and a normally-closed end, the normally-closed end floats, the normally-open end is connected with a second public end, or the normally-closed end is connected with a second public end, and the normally-open end floats;
one end of the current-limiting resistor is connected with the first public end, and the other end of the current-limiting resistor is connected with the anode of the direct-current power supply;
the controller is connected with the first public end and electrically connected with an audible and visual alarm, and the controller is used for controlling the audible and visual alarm to work and stop according to the voltage of the first public end.
As an optional technical solution of the present invention, the controller is a DSP controller.
As an optional technical scheme of the utility model, the current-limiting resistor is the series-parallel combination of single resistance or two above resistances.
As an optional technical solution of the present invention, the rated operating voltage of the dc relay is 24 VDC.
Compared with the prior art, the embodiment of the utility model provides a following beneficial effect has:
by connecting the primary coil of the alternating current (direct current) relay with the circuit breaker in series, when the circuit breaker is closed, the alternating current (direct current) relay is attracted under the action of the working power supply, the first public end is changed from the normally closed end to the normally open end, so that the voltage of the first public end is changed from a high level to a low level, or the first public end is changed from the normally open end to the normally closed end, so that the voltage of the first public end is changed from the low level to the high level. The controller judges whether the breaker is closed or not according to the voltage change of the first common end, and starts the audible and visual alarm according to the requirement (such as starting when the breaker is opened, and not starting when the breaker is closed).
The embodiment of the utility model provides a circuit breaker state real-time detection circuit, the circuit is simple, low cost, easy realization to can the state of real-time detection circuit breaker, and show the position of circuit breaker, be convenient for maintain through audible-visual annunciator.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the range which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a schematic diagram of a circuit breaker state real-time detection circuit according to an embodiment of the present invention;
fig. 2 is an embodiment of the present invention provides another schematic diagram of a circuit breaker state real-time detection circuit.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are clearly and completely described with reference to the drawings in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, the present embodiment provides a circuit breaker state real-time detection circuit, which is used for detecting the state of the circuit breaker K1 in real time, that is, detecting whether the circuit breaker K1 is in a closed state or an open state. In an EPS emergency power supply system, the circuit breaker K1 should be in a closed state, otherwise, an alarm should be activated.
Specifically, the circuit breaker K1 is divided into an ac circuit breaker and a dc circuit breaker, and this embodiment takes the ac circuit breaker as an example, and the working power supply is 220VAC commercial power.
Specifically, this circuit breaker state real-time detection circuit includes:
one end 7 of a primary coil of an alternating current relay J1 is connected with one end of a circuit breaker K1, the other end of the circuit breaker K1 is connected with a phase line L of a working power supply, the other end 8 of the primary coil of the alternating current relay J1 is connected with a zero line N of the working power supply, a contact set is arranged on the alternating current relay J1 and comprises a first public end 6, a normally open end 4 and a normally closed end 2; the rated working voltage of the alternating current relay J1 is 220VAC, the normally closed end 2 floats, and the normally open end 4 is connected with the second common end GND;
one end of the current-limiting resistor R1 and one end of the current-limiting resistor R1 are connected with the first common end 6, and the other end of the current-limiting resistor R1 is connected with the anode VCC of the direct-current power supply;
and the DSP controller is used for controlling the audible and visual alarm to work and stop according to the voltage of the first public end 6.
Therefore, the working principle of the embodiment is as follows:
when the circuit breaker K1 is closed, the ac relay J1 pulls in under the action of the working power supply, and the first common terminal 6 changes from being connected with the normally closed terminal 2 to being connected with the normally open terminal 4, so that the voltage of the first common terminal 6 changes from high level to low level. The DSP controller judges that the circuit breaker K1 is closed according to the low level state of the voltage of the first public end 6.
When the circuit breaker K1 is opened, the ac relay J1 is opened, and the first common terminal 6 is connected to the normally closed terminal 2, so that the voltage of the first common terminal 6 is at a high level. And the DSP controller judges that the circuit breaker K1 is disconnected according to the high-level state of the voltage of the first common terminal 6, and starts an audible and visual alarm.
Referring to fig. 2, in another embodiment of the present application, a circuit for detecting a state of a circuit breaker in real time is provided, which is used for detecting a state of a dc relay in real time, and includes:
one end 7 of a primary coil of the direct-current relay J2 is connected with one end of a breaker K1, the other end of the breaker K1 is connected with an anode A of a working power supply, the other end 8 of the primary coil of the direct-current relay J2 is connected with a cathode B of the working power supply, and the direct-current relay J2 is provided with a contact group which comprises a first common end 6, a normally open end 4 and a normally closed end 2; the rated working voltage of the direct current relay J2 is 24VDC, and the voltage of the working power supply is 24 VDC; the normally closed end 2 is floating, and the normally open end 4 is connected with a second common end GND;
one end of the current-limiting resistor R1 and one end of the current-limiting resistor R1 are connected with the first common end 6, and the other end of the current-limiting resistor R1 is connected with the anode VCC of the direct-current power supply;
and the DSP controller is connected with the first public end 6 and electrically connected with an audible and visual alarm, and is used for controlling the audible and visual alarm to work and stop according to the voltage of the first public end 6.
Therefore, the working principle of the embodiment is as follows:
when the circuit breaker K1 is closed, the dc relay J2 is pulled in by the working power supply, and the first common terminal 6 is changed from being connected with the normally closed terminal 2 to being connected with the normally open terminal 4, so that the voltage of the first common terminal 6 is changed from a high level to a low level. The DSP controller judges that the circuit breaker K1 is closed according to the low level state of the voltage of the first public end 6.
When the circuit breaker K1 is opened, the dc relay J2 is opened, and the first common terminal 6 is restored (kept) connected to the normally closed terminal 2, so that the voltage of the first common terminal 6 is restored (kept) at a high level. And the DSP controller judges that the circuit breaker K1 is disconnected according to the high-level state of the voltage of the first common terminal 6, and starts an audible and visual alarm.
It should be noted that, in the above embodiment, the current limiting resistor R1 may be a single resistor or a series-parallel combination of two or more resistors. The voltage of the positive electrode VCC may be set as desired, for example, to 12 VDC.
To sum up, the embodiment of the utility model provides a circuit breaker state real-time detection circuit, the circuit is simple, low cost, easy realization to can real-time detection circuit breaker K1's state, and show circuit breaker K1's position through audible-visual annunciator, be convenient for maintain.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (8)
1. Circuit breaker state real-time detection circuit, its characterized in that includes:
the circuit breaker comprises an alternating current relay, a first common end, a normally open end and a normally closed end, wherein one end of a primary coil of the alternating current relay is connected with one end of the circuit breaker, the other end of the circuit breaker is connected with a phase line of a working power supply, the other end of the primary coil of the alternating current relay is connected with a zero line of the working power supply, the alternating current relay is provided with a contact set, the contact set comprises the first common end, the normally open end and the normally closed end, the normally closed end is floated, the normally open end is connected with the second common end, or the normally closed end is connected with the;
one end of the current-limiting resistor is connected with the first public end, and the other end of the current-limiting resistor is connected with the anode of the direct-current power supply;
the controller is connected with the first public end and electrically connected with an audible and visual alarm, and the controller is used for controlling the audible and visual alarm to work and stop according to the voltage of the first public end.
2. The real-time breaker state detection circuit of claim 1, wherein the controller is a Digital Signal Processing (DSP) controller.
3. The circuit breaker state real-time detection circuit of claim 1, wherein the current limiting resistor is a single resistor or a series-parallel combination of two or more resistors.
4. The real-time breaker state detection circuit of claim 1, wherein the rated operating voltage of the ac relay is 220 VAC.
5. A circuit breaker state real-time detection circuit, comprising:
the direct current relay is provided with a contact group, the contact group comprises a first public end, a normally-closed end and a normally-closed end, the normally-closed end floats, the normally-open end is connected with a second public end, or the normally-closed end is connected with a second public end, and the normally-open end floats;
one end of the current-limiting resistor is connected with the first public end, and the other end of the current-limiting resistor is connected with the anode of the direct-current power supply;
the controller is connected with the first public end and electrically connected with an audible and visual alarm, and the controller is used for controlling the audible and visual alarm to work and stop according to the voltage of the first public end.
6. The real-time breaker state detection circuit of claim 5, wherein the controller is a Digital Signal Processing (DSP) controller.
7. The real-time breaker state detection circuit of claim 5, wherein the current limiting resistor is a single resistor or a series-parallel combination of two or more resistors.
8. The real-time breaker state detection circuit of claim 5, wherein the rated operating voltage of the DC relay is 24 VDC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021778457.2U CN213149178U (en) | 2020-08-24 | 2020-08-24 | Circuit for detecting state of circuit breaker in real time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021778457.2U CN213149178U (en) | 2020-08-24 | 2020-08-24 | Circuit for detecting state of circuit breaker in real time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213149178U true CN213149178U (en) | 2021-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021778457.2U Active CN213149178U (en) | 2020-08-24 | 2020-08-24 | Circuit for detecting state of circuit breaker in real time |
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| Country | Link |
|---|---|
| CN (1) | CN213149178U (en) |
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2020
- 2020-08-24 CN CN202021778457.2U patent/CN213149178U/en active Active
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