CN217135144U - Power supply monitoring system - Google Patents
Power supply monitoring system Download PDFInfo
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- CN217135144U CN217135144U CN202220360607.0U CN202220360607U CN217135144U CN 217135144 U CN217135144 U CN 217135144U CN 202220360607 U CN202220360607 U CN 202220360607U CN 217135144 U CN217135144 U CN 217135144U
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Abstract
The utility model discloses a power supply monitoring system relates to alternating current power supply technical field, include: the alternating current power supply voltage monitoring module is in signal connection with the control module, is arranged in the alternating current power supply branch loop and is used for monitoring whether the voltage of the alternating current power supply is abnormal or not; the alternating current power supply current monitoring module is in signal connection with the control module, is arranged in the alternating current power supply main loop and is used for monitoring whether the current of the alternating current power supply is over-current or not; and the control module is used for cutting off the main power supply loop of the alternating current power supply under the condition that the voltage of the alternating current power supply is abnormal or the current of the alternating current power supply is over-current. The embodiment of the utility model provides a pair of power supply monitoring system can carry out real-time detection to the input power of fiber laser, introduces control module with the testing result of power, uses the power monitoring result to control the break-make of laser instrument power for judging the basis through control module, ensures that the laser instrument just carries out the light-emitting operation when stable mains operated.
Description
Technical Field
The utility model relates to an alternating current power supply technical field especially relates to a power monitoring system.
Background
The optical fiber laser is a laser using a rare earth element doped glass optical fiber as a gain medium, the optical fiber laser is easy to form high power density in the optical fiber under the action of pumping light, so that the laser energy level of laser working substances is caused, the application range of the optical fiber laser is very wide, and the optical fiber laser is supplied with energy by a driving power supply.
In the existing industrial production activity, because a plurality of devices work simultaneously, the fluctuation of a power supply is large, and the fluctuation of the power supply easily causes the failure of the devices to cause unnecessary loss.
SUMMERY OF THE UTILITY MODEL
The utility model provides a power supply monitoring system, its aim at solve power supply fluctuation very big, and the fluctuation of power leads to the trouble of equipment very easily to arouse the problem of unnecessary loss.
An embodiment of the utility model provides a power monitoring system, include:
the alternating current power supply voltage monitoring module is in signal connection with the control module, is arranged in the alternating current power supply branch loop and is used for monitoring whether the voltage of the alternating current power supply is abnormal or not;
the alternating current power supply current monitoring module is in signal connection with the control module, is arranged in the alternating current power supply main loop and is used for monitoring whether the current of the alternating current power supply is over-current or not;
and the control module is used for cutting off the main power supply loop of the alternating current power supply under the condition that the voltage of the alternating current power supply is abnormal or the current of the alternating current power supply is over-current.
Optionally, the ac power supply voltage monitoring module includes:
the input end of the three-phase power supply monitor is connected with the alternating current power supply branch loop, the first end of the normally closed contact is connected with the first direct current power supply, and the second end of the normally closed contact is connected with the control end of the first controlled switch unit and used for controlling the normally closed contact to be disconnected when the situation that the alternating current power supply voltage is abnormal is monitored;
one end of the first controlled switch unit is connected with the second direct-current power supply, and the other end of the first controlled switch unit is connected with the first input end of the control module.
Optionally, the first controlled switch unit is a first relay, a first end of a normally open contact is connected to the second dc power supply, and a second end of the normally open contact is connected to the first input end of the control module.
Optionally, the ac power supply current monitoring module includes:
the input end of the surge protector is connected with the main power supply loop of the alternating current power supply, the first end of the normally closed contact is connected with the first direct current power supply, and the second end of the normally closed contact is connected with the control end of the second controlled switch unit and used for controlling the normally closed contact to be disconnected when the alternating current power supply current is monitored to be over-current;
optionally, one end of the second controlled switch unit is connected to a second dc power supply, and the other end of the second controlled switch unit is connected to a second input end of the control module.
Optionally, the second controlled switch unit is a second relay, a first end of the normally open contact is connected to the second dc power supply, and a second end of the normally open contact is connected to the second input end of the control module.
The control module includes:
the first input end of the control unit is connected with the alternating current power supply voltage monitoring module, the second input end of the control unit is connected with the alternating current power supply current monitoring module, and the output end of the control unit is connected with the control end of a third controlled switch unit and used for controlling the third controlled switch unit to be switched off when receiving an alternating current power supply voltage abnormal signal sent by the alternating current power supply voltage monitoring module or alternating current power supply current overcurrent information sent by the alternating current power supply current monitoring module;
optionally, the third controlled switch unit is disposed in the main power supply loop of the ac power supply.
Optionally, the third controlled switching unit comprises at least one contactor.
Optionally, the third controlled switching unit includes two contactors connected in series with each other.
The embodiment of the utility model provides a power supply monitoring system can carry out real-time detection to the input power of fiber laser, introduces the testing result of power into control module, controls the break-make of laser power through control module with power monitoring result as the judgement foundation, ensures that the laser only carries out the light-emitting operation when stable power supply supplies power; the safe working environment of the laser can be improved, and the service life of the laser is prolonged.
Drawings
Fig. 1 is a schematic diagram of a power monitoring system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
An embodiment of the utility model provides a power monitoring system uses the three-phase power supply monitor to detect the voltage of power, detects overflowing through surge protector to the power to control module feedback testing result, controlgear's operation.
Fig. 1 is a schematic structural diagram of a power monitoring system according to an embodiment of the present invention. As shown in fig. 1, includes:
the alternating current power supply voltage monitoring module 3 is in signal connection with the control module, is arranged in the alternating current power supply branch loop and is used for monitoring whether the alternating current power supply voltage is abnormal or not;
specifically, the ac power supply voltage monitoring module 3 includes:
the input end of the three-phase power supply monitor is connected with the alternating current power supply branch loop, the first end of the normally closed contact is connected with the first direct current power supply 4, and the second end of the normally closed contact is connected with the control end of the first controlled switch unit and used for controlling the normally closed contact to be disconnected when the situation that the alternating current power supply voltage is abnormal is monitored;
one end of the first controlled switch unit is connected with the second direct-current power supply, and the other end of the first controlled switch unit is connected with the first input end of the control module.
The first controlled switch unit is a first relay, the first end of a normally open contact is connected with the second direct-current power supply, and the second end of the normally open contact is connected with the first input end of the control module. It should be noted that, a contact of the normally open contact which is in an open state under a normal state (no power supply) is called a normally open contact, and when the coil is powered, the normally open contact is closed, and the normally closed contact is opened.
The contacts of the three-phase power supply monitor have a pair of normally closed contacts 11 and 12. Wherein the normally closed contact 12 corresponds to the +24V power supply contact of the relay. When the three-phase power supply monitor monitors undervoltage, overvoltage and open-phase, normally closed contacts 11 and 12 of the three-phase power supply monitor are switched off from normally closed, a power supply contact of the relay cannot receive a +24V signal, at the moment, a high level of a main control board of the control module is changed into a low level by the relay, the main control board receives a power supply voltage fault, the power-on condition of the contactor is not met, a power-on signal of the contactor sent by the main control board disappears, and the contactor is switched off.
The alternating current power supply current monitoring module 2 is in signal connection with the control module, is arranged in an alternating current power supply main loop and is used for monitoring whether the current of the alternating current power supply is over-current or not;
specifically, the ac power supply current monitoring module 2 includes:
and the input end of the surge protector is connected with an alternating current power supply main loop, the first end of the normally closed contact is connected with the first direct current power supply 4, and the second end of the normally closed contact is connected with the control end of the second controlled switch unit and used for controlling the normally closed contact to be disconnected when the situation that the alternating current power supply current is over-current is monitored.
The first direct current power supply 4 comprises a +24V power supply.
As shown in fig. 1, the input terminals L1, L2, L3 of the surge protector are connected in parallel with the main circuit, when the main circuit is overcurrent, the normally closed contacts 11 and 12 of the surge protector are disconnected, at this time, the +24V accessed from K3-11 cannot reach the power supply contact of the relay, the relay loses the +24V power supply, the normally open contact of the relay is recovered to be normally open from being closed, the transition of the relay enables the high level signal received by the main control board to be the low level signal, and the main control board receives the power failure signal.
The surge protector contacts have a pair of normally closed contacts 11, 12. The K10-A1 corresponding to 12 is a relay, K10 is a relay, and A1 is a 24V + power supply contact of K10. When the surge protector receives overcurrent, normally closed contacts 11 and 12 of the surge protector are normally opened from normally closed, a power supply contact A1 of a relay K10 cannot receive a 24V + signal, at the moment, a high level of a main control board is changed into a low level by a relay K10, the main control board receives a power supply overcurrent fault, the electrifying condition of the contactor is not met, an electrifying signal of the contactor sent by the main control board disappears, and the contactor is disconnected.
And one end of the second controlled switch unit is connected with a second direct-current power supply, and the other end of the second controlled switch unit is connected with a second input end of the control module. The second dc power supply may be +5V or + 3.3V.
The second controlled switch unit is a second relay, the first end of a normally open contact is connected with the second direct-current power supply, and the second end of the normally open contact is connected with the second input end of the control module.
And the control module is used for cutting off the main power supply loop of the alternating current power supply under the condition that the voltage of the alternating current power supply is abnormal or the current of the alternating current power supply is over-current. The control module includes:
and the first input end of the control unit is connected with the alternating current power supply voltage monitoring module 3, the second input end of the control unit is connected with the alternating current power supply current monitoring module 2, and the output end of the control unit is connected with the control end of the third controlled switch unit and is used for controlling the third controlled switch unit to be switched off when receiving an alternating current power supply voltage abnormal signal sent by the alternating current power supply voltage monitoring module 3 or alternating current power supply current overcurrent information sent by the alternating current power supply current monitoring module 2. The control unit may be a chip such as a single chip microcomputer.
The third controlled switch unit is arranged in the main power supply loop of the alternating current power supply.
The third controlled switching unit comprises at least one contactor.
The third controlled switching unit comprises two contactors connected in series with each other.
Specifically, the control unit receives signals of sensors (including output optical cable closing signals, water flow and water temperature signals and overcurrent fault voltage fault signals) at each position, exchanges data with a slave control board of the optical module, analyzes whether the current working state of the laser is normal or not, controls the contactor to be attracted when the working state is normal, enables a main loop to be smooth, and disconnects the contactor when an abnormal state is found, cuts off power supply of the main loop and stops loss in time.
As shown in fig. 1, in particular, the main circuit comprises: the left power supply air switch, the main air switch 1, the first contactor 6-1, the second contactor 6-2 and the filter 7 are connected with a molded case circuit breaker of the fiber laser through a power line, and the outgoing line of the molded case circuit breaker starts shunting. The main loop passes through a first contactor 6-1 and a second contactor 6-2, and a filter 7 is input into an electrical module 8 (a constant voltage is converted into a constant current module) by an aviation plug for photoelectric conversion. The surge protector is an overcurrent alarm and must be connected in parallel in the main loop, and therefore connected in parallel at the inlet wire of the first contactor 6-1. A three-phase power supply monitor may monitor voltage in the branch circuit for voltage monitoring. The first contactor 6-1 incoming line leads the branch loop to enter the terminal block through a 16A breaker, a three-phase power supply monitor, an AC380V/DC24V,120W power supply module (providing 24V power supply for the control unit), and the constant temperature dehumidification air conditioner is connected in parallel on the terminal block.
As shown in fig. 1, an external power supply is provided to the fiber laser through a laser main switch 1, and a main loop provides the external power supply to the fiber laser through a contactor 6 and a filter 7. The branch loop supplies power to the surge protector and the three-phase power supply monitor so that the three-phase power supply monitor can monitor the power supply. The branch loop is simultaneously converted into direct current 24V to supply power to the control unit. And the detection results of the surge protector and the three-phase power supply monitor are led into a control unit, and finally, the control of the power supply of the fiber laser is realized through 24V power supplies A1 and A2 of the first AC contactor 6-1 and the second AC contactor 6-2.
The embodiment of the utility model provides a power supply monitoring system can carry out real-time detection to the input power of fiber laser, introduces the detecting result of power into the control unit, controls the break-make of laser power through the control unit with power monitoring result as the judgement foundation, ensures that the laser only carries out the light-emitting operation when stable power supply supplies power; the safe working environment of the laser can be improved, and the service life of the laser is prolonged.
The embodiment of the utility model provides a pair of power monitoring system includes air conditioner power module 5, is for equipment provides constant temperature and humidity operational environment, and wherein L1L2L3 is the power, and 485+ and 485-correspond is the air conditioner start stop signal of main control board.
Although the invention has been described in detail in the foregoing by way of general description, specific embodiments and experiments, it will be apparent to those skilled in the art that certain modifications and improvements may be made thereto based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (8)
1. A power monitoring system, comprising:
the alternating current power supply voltage monitoring module is in signal connection with the control module, is arranged in the alternating current power supply branch loop and is used for monitoring whether the voltage of the alternating current power supply is abnormal or not;
the alternating current power supply current monitoring module is in signal connection with the control module, is arranged in the alternating current power supply main loop and is used for monitoring whether the current of the alternating current power supply is over-current or not;
and the control module is used for cutting off the main power supply loop of the alternating current power supply under the condition that the voltage of the alternating current power supply is abnormal or the current of the alternating current power supply is over-current.
2. The power monitoring system of claim 1, wherein the ac supply voltage monitoring module comprises:
the input end of the three-phase power supply monitor is connected with the alternating current power supply branch loop, the first end of the normally closed contact is connected with the first direct current power supply, and the second end of the normally closed contact is connected with the control end of the first controlled switch unit and used for controlling the normally closed contact to be disconnected when the situation that the alternating current power supply voltage is abnormal is monitored;
one end of the first controlled switch unit is connected with the second direct-current power supply, and the other end of the first controlled switch unit is connected with the first input end of the control module.
3. The power monitoring system according to claim 2, wherein the first controlled switch unit is a first relay, a first end of a normally open contact is connected to the second dc power supply, and a second end of the normally open contact is connected to the first input end of the control module.
4. The power monitoring system of claim 1, wherein the ac power supply current monitoring module comprises:
the input end of the surge protector is connected with the main power supply loop of the alternating current power supply, the first end of the normally closed contact is connected with the first direct current power supply, and the second end of the normally closed contact is connected with the control end of the second controlled switch unit and used for controlling the normally closed contact to be disconnected when the alternating current power supply current is monitored to be over-current;
and one end of the second controlled switch unit is connected with a second direct-current power supply, and the other end of the second controlled switch unit is connected with a second input end of the control module.
5. The power monitoring system according to claim 4, wherein the second controlled switch unit is a second relay, a first end of a normally open contact is connected to the second DC power supply, and a second end of the normally open contact is connected to the second input end of the control module.
6. The power monitoring system of claim 1, wherein the control module comprises:
the first input end of the control unit is connected with the alternating current power supply voltage monitoring module, the second input end of the control unit is connected with the alternating current power supply current monitoring module, and the output end of the control unit is connected with the control end of a third controlled switch unit and used for controlling the third controlled switch unit to be switched off when receiving an alternating current power supply voltage abnormal signal sent by the alternating current power supply voltage monitoring module or alternating current power supply current overcurrent information sent by the alternating current power supply current monitoring module;
the third controlled switch unit is arranged in the main power supply loop of the alternating current power supply.
7. The power monitoring system of claim 6, wherein the third controlled switching unit comprises at least one contactor.
8. The power monitoring system according to claim 7, wherein the third controlled switching unit comprises two contactors in series with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220360607.0U CN217135144U (en) | 2022-02-22 | 2022-02-22 | Power supply monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220360607.0U CN217135144U (en) | 2022-02-22 | 2022-02-22 | Power supply monitoring system |
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| CN217135144U true CN217135144U (en) | 2022-08-05 |
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| CN202220360607.0U Active CN217135144U (en) | 2022-02-22 | 2022-02-22 | Power supply monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117439014A (en) * | 2023-12-20 | 2024-01-23 | 天津航空机电有限公司 | External power supply monitoring device and monitoring method |
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- 2022-02-22 CN CN202220360607.0U patent/CN217135144U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117439014A (en) * | 2023-12-20 | 2024-01-23 | 天津航空机电有限公司 | External power supply monitoring device and monitoring method |
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