CN113452131A - Power supply management device and method of numerical control equipment - Google Patents
Power supply management device and method of numerical control equipment Download PDFInfo
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- CN113452131A CN113452131A CN202010218483.8A CN202010218483A CN113452131A CN 113452131 A CN113452131 A CN 113452131A CN 202010218483 A CN202010218483 A CN 202010218483A CN 113452131 A CN113452131 A CN 113452131A
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- numerical control
- control equipment
- power supply
- power
- capacitor module
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
Abstract
The invention discloses a power supply management device and method of numerical control equipment. The power management device includes: the device comprises a power supply transmission circuit, a capacitor module and a backup circuit; under the condition that the output voltage of the external power supply is not less than the voltage threshold, the power supply transmission circuit respectively transmits the power supply of the external power supply to the numerical control equipment and the capacitor module so as to supply power to the numerical control equipment and charge the capacitor module; and under the condition that the output voltage of the external power supply is smaller than a voltage threshold, the capacitor module supplies power to the numerical control equipment, and the backup circuit sends a backup signal to the numerical control equipment so as to write data running in the memory of the numerical control equipment into the hard disk of the numerical control equipment. Therefore, the device is protected when the numerical control device is powered off unexpectedly or suddenly, and the running data is not lost.
Description
Technical Field
The present invention relates to the field of data system control, and in particular, to a power management apparatus and method for a digital control device.
Background
At present, when a numerical control system runs, a large amount of data runs in an internal memory, and a large number of variables are updated in real time, and the data need to be written into a hard disk before the numerical control system is shut down so as to ensure that the data are not lost, or the numerical control system can continue to process from the state of the numerical control system in the last shutdown process after the numerical control system is started next time. Once a power failure occurs suddenly, the memory data of the data system is lost, which may have serious consequences, such as damage to the processed workpiece, damage to the processed file, damage to the system file, and even worse, the system cannot be started. Therefore, it is very important to ensure that the data or variables of the operation of the numerical control system are written into the hard disk before each power failure.
In the prior art, a UPS (uninterruptible power supply) is often used as a backup power source. The UPS uses a lead-acid battery as an energy storage device, the UPS is charged when the numerical control system works normally, and the UPS supplies power to the numerical control system when the power failure occurs, so that the data system can perform data backup. However, UPSs are very expensive, heavy and not easy to install; and the UPS has short service life and needs frequent maintenance, and the cost of using the UPS as a backup power supply is very high.
Disclosure of Invention
The invention provides a power management device and a power management method for numerical control equipment, aiming at overcoming the defect of high cost of using a UPS as a backup power supply of a data system in the prior art.
The invention solves the technical problems through the following technical scheme:
a power management apparatus of a digital control device, the power management apparatus comprising: the device comprises a power supply transmission circuit, a capacitor module and a backup circuit;
the input end of the power supply transmission circuit is connected with an external power supply, the first output end of the power supply transmission circuit is connected with the numerical control equipment, and the second output end of the power supply transmission circuit is connected with the charging end of the capacitor module;
the power transmission end of the capacitor module is connected with the numerical control equipment;
one end of the backup circuit is connected with the charging end of the capacitor module, and the other end of the backup circuit is connected with the numerical control equipment;
under the condition that the output voltage of the external power supply is not less than the voltage threshold, the power supply transmission circuit respectively transmits the power supply of the external power supply to the numerical control equipment and the capacitor module so as to supply power to the numerical control equipment and charge the capacitor module;
and under the condition that the output voltage of the external power supply is smaller than a voltage threshold, the capacitor module supplies power to the numerical control equipment, and the backup circuit sends a backup signal to the numerical control equipment so as to write data running in the memory of the numerical control equipment into the hard disk of the numerical control equipment.
Optionally, the power delivery circuit comprises: the input end, the first output end, the second output end, the first diode and the current limiter;
the anode of the first diode is connected with the input end, the cathode of the first diode is respectively connected with the first output end and one end of the current limiter, and the other end of the current limiter is connected with the second output end.
Optionally, the power management apparatus further includes: a second diode;
the anode of the second diode is connected with the power transmission terminal, and the cathode of the second diode is connected with the second output terminal.
Optionally, the power management apparatus further includes: a power-down starting circuit;
and under the condition that the numerical control equipment is shut down and the output voltage of the external power supply is not less than the voltage threshold, the power-down starting circuit sends a starting signal to the numerical control equipment so as to restart the numerical control equipment.
Optionally, the power management apparatus further includes: a power-down detection circuit;
one end of the power failure detection circuit is connected with the power transmission end, and the other end of the power failure detection circuit is connected with the numerical control equipment;
and under the condition that the capacitor module supplies power to the numerical control equipment, the power failure detection circuit sends a power failure signal to the numerical control equipment.
Optionally, the power management apparatus further includes: a filter;
and the power supply transmission circuit transmits the power supply of the external power supply to the numerical control equipment and the capacitor module through the filter respectively.
Optionally, the power management apparatus further includes: an AC/DC booster and a DC/AC converter;
and the power supply delivery circuit delivers the power supply of the external power supply to the numerical control equipment through the alternating current/direct current booster and the direct current/alternating current converter.
Optionally, the power management apparatus further includes: a DC/DC booster;
and the capacitor module supplies power to the numerical control equipment through the direct current/direct current booster.
A power management method of a numerical control device, the power management method comprising:
monitoring the power supply state of an external power supply to the numerical control equipment;
under the condition that the external power supply is monitored to supply power to the numerical control equipment, acquiring partial power supply of the external power supply to charge a capacitor module;
and under the condition that the external power supply stops supplying power to the numerical control equipment, the capacitor module supplies power to the numerical control equipment and simultaneously sends a backup signal to the numerical control equipment so that the numerical control equipment writes data of memory operation into a hard disk.
Optionally, the power management method further includes:
and sending a power failure signal to the numerical control equipment under the condition that the capacitor module supplies power to the numerical control equipment.
The positive progress effects of the invention are as follows:
according to the embodiment of the invention, the super capacitor module is used as a backup power supply to supply power to the numerical control equipment, the charging and discharging are rapid, sufficient time is provided to ensure that the numerical control equipment stores data running in the memory, so that the equipment is protected when the numerical control equipment is powered off accidentally or suddenly, the running data is not lost, the power management device of the embodiment is simple to realize, a control circuit is not required to be additionally arranged, the power can be quickly supplied to the numerical control equipment under the condition that an external power supply is powered off, the cost is low, and the size is small.
Drawings
Fig. 1 is a schematic circuit diagram of a power management apparatus of a digital control device according to an exemplary embodiment of the present invention.
Fig. 2 is a flowchart illustrating a power management method of a digital control device according to an exemplary embodiment of the present invention.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
Fig. 1 is a schematic circuit diagram of a power management apparatus of a digital control device according to an exemplary embodiment of the present invention, where the power management apparatus includes: power supply circuit 11, capacitor module 12 and backup circuit 13. The power supply circuit 11 includes: an input 111, a first output 112, a second output 113, a first diode D1 and a current limiter 114.
The capacitor module 12 may be formed by connecting a plurality of single supercapacitors in series and parallel. The capacitor module 12 includes a voltage equalizing module to prevent voltage imbalance and protect the circuit. In the embodiment, the super capacitor is adopted, the super capacitor has high energy density, short charging time and unlimited times of charging and discharging, the stored electricity of the super capacitor can be supplied to the numerical control equipment to work for more than 5 seconds, and the sufficient time for the numerical control system is ensured to realize power-off protection.
The input 111 of the power delivery circuit 11 is connected to an external power source, the input 111 of the power delivery circuit 11 is further connected to the anode of a first diode D1, the cathode of the first diode D1 is connected to the first output terminal 112 and one end of a current limiter 114, respectively, and the other end of the current limiter 114 is connected to the second output terminal 113. A first output end 112 of the power supply transmission circuit 11 is connected with the numerical control equipment, and a second output end 113 of the power supply transmission circuit is connected with a charging end of the capacitor module 12; the power transmission end of the capacitor module 12 is connected with the numerical control equipment; one end of the backup circuit 13 is connected with the charging end of the capacitor module 12, and the other end of the backup circuit 13 is connected with the numerical control equipment.
The power supply circuit 11 is connected to the capacitor module 12 through the current limiter 114, so that when the external power supply is supplying power normally, an excessive current is not drawn from the external power supply, and abnormal phenomena such as undervoltage and overcurrent of the numerical control device caused by insufficient supply of the external power supply are avoided. And as long as the charging time is long enough, the super capacitor can be fully charged, and the charged voltage can reach the power supply voltage value.
The following description of the operation principle of supplying power to the numerical control device by using the power management device of the embodiment is as follows:
if the output voltage of the external power supply is not less than the voltage threshold, the external power supply can normally supply power to the numerical control equipment, and the power supply transmission circuit transmits the power supply of the external power supply to the numerical control equipment to supply power to the numerical control equipment. Meanwhile, if the voltage Ua on the power supply transmission circuit is greater than the voltage Ub of the capacitor module, the power supply transmission circuit transmits part of the external power supply to the capacitor module to charge the capacitor module. And if the voltage Ua on the power supply transmission circuit is equal to the voltage Ub of the capacitor module, stopping charging the capacitor module. And the electric energy stored in the capacitor module is used for supplying power to the numerical control equipment under the condition that an external power supply is powered off.
If the output voltage of the external power supply is smaller than the voltage threshold, the external power supply is powered off, the power supply for the numerical control equipment is stopped, the voltage Ub of the capacitor module is larger than the voltage Uc of the power supply transmission circuit, and the capacitor module supplies power for the numerical control equipment. Meanwhile, the backup circuit sends a backup signal to the numerical control equipment, so that the numerical control equipment writes the data operated in the memory into the hard disk, and the memory data loss caused by sudden power failure of the numerical control equipment is avoided.
Referring to fig. 1, the backup circuit includes: the first backup branch comprises a yes gate, and the second backup branch comprises a not gate. Under the condition that the capacitor module supplies power to the numerical control equipment, the first backup branch circuit outputs a positive logic backup signal, and the second backup branch circuit outputs a negative logic backup signal. A user can select to use the first backup branch or the second backup branch according to actual requirements, and if a CPU of the numerical control equipment receives a positive logic signal for backup, the first backup branch is connected with a backup trigger end of the CPU; and if the CPU of the numerical control equipment receives the negative logic signal for backup, the second backup branch is connected with the backup trigger end of the CPU. The backup circuit adopted in the embodiment is suitable for various types of numerical control equipment, and when the fact that the capacitor module supplies power to the numerical control equipment is detected, the CPU is triggered to write data running in the memory into the hard disk.
Because the capacity of the capacitor module is limited, the time for supplying power to the numerical control equipment is limited, in another embodiment, the power management device further comprises: power failure detection circuitry. The power failure detection circuit comprises a gate, wherein the input end of the gate is connected with the input end of the power supply transmission circuit, and the output end of the gate is connected with the numerical control equipment. And under the condition that the output voltage of the external power supply is less than the voltage threshold value, the signal value output by the power failure detection circuit is 1. Under the condition that the output voltage of the external power supply is smaller than the voltage threshold, the value of a signal (power failure signal) output by the power failure detection circuit is 0, when the numerical control device detects the 0 signal, a power failure prompt is sent to remind operation and maintenance personnel that the numerical control device is disconnected from the external power supply at present, the backup power supply supplies power to the numerical control device, and corresponding measures are taken as soon as possible.
In another embodiment, the power management device further comprises: and a power-down starting circuit. When the electric quantity of the capacitor module is not enough to supply power to the numerical control equipment continuously, the numerical control equipment is shut down. When the external power supply recovers to supply power to the numerical control equipment, the output voltage of the external power supply is not less than the voltage threshold, and the power failure starting circuit sends a starting signal to the numerical control equipment so as to restart the numerical control equipment quickly. Therefore, the problem that the numerical control equipment cannot be started up due to failure of re-electrifying and starting of the capacitance module caused by low voltage or the problem that the numerical control equipment can not be started up until the residual charge of the super capacitor is discharged after a few minutes or even longer time is solved. In the embodiment, the problem of residual charge starting is solved through the power-down starting circuit, so that the numerical control equipment is not limited by the time from power-off to restarting.
It should be noted that the power-down start circuit may be provided with another circuit, or may adopt the backup circuit shown in fig. 1. If the same circuit is adopted for backup and restart, the output end of the backup circuit needs to be connected with the reset end of the CPU of the numerical control equipment, so that the numerical control equipment can be restarted with zero waiting time when the numerical control equipment is ensured to be powered on next time.
In this embodiment, adopt super capacitor module as the back-up source for the power supply of numerical control equipment, the charge-discharge is quick, and provides sufficient time and ensures that numerical control equipment preserves the data of operation in the memory to play the guard action to equipment when numerical control equipment accident or outage suddenly, ensure that operation data is not lost, the power management device of this embodiment realizes simply, need not to establish in addition that control circuit can be for the quick power supply of numerical control equipment under the condition that external power source falls electric, and is with low costs, small.
In another embodiment, the power management device further comprises: and a second diode D2. The anode of the second diode D2 is connected to the power supply terminal and the cathode of the second diode D2 is connected to the second output terminal 112. Second diode D2 adopts the schottky diode, including second diode D2's discharge circuit, can supply load current for the biggest ability as far as possible to keep a lower voltage drop, the loss is little, can guarantee that external power source stops suddenly and supplies power for numerical control equipment, and the electric capacity module can supply power for numerical control equipment fast, does not have the influence to numerical control equipment.
In another embodiment, a filter may be further disposed on the power transmission circuit, and the power transmission circuit transmits power of an external power source to the numerical control device and the capacitor module through the filter.
In another embodiment, an alternating current/direct current booster and a direct current/alternating current converter can be arranged on the power supply circuit; the power supply delivery circuit delivers power of an external power supply to the numerical control equipment through the alternating current/direct current booster and the direct current/alternating current converter.
In another embodiment, the power management device further comprises: a DC/DC booster; the capacitor module supplies power to the numerical control equipment through the direct current/direct current booster.
Fig. 2 is a flowchart of a power management method for a digital control device according to an exemplary embodiment of the present invention, where the power management method is implemented by using a power management apparatus according to any of the embodiments described above, and the method includes the following steps:
and step 201, monitoring the power supply state of the external power supply to the numerical control equipment.
Wherein, the power supply state of the external power supply is determined by monitoring the voltage value of the input end of the power supply transmission circuit. The power supply state monitoring of the external power supply can be realized by adopting a power failure detection circuit, but not limited to, a voltmeter or a universal meter and the like can also be adopted.
If the output voltage of the external power supply is not less than the voltage threshold, the external power supply is indicated to supply power normally, and if the output voltage of the external power supply is less than the voltage threshold, the external power supply is indicated to supply power abnormally, and the external power supply stops supplying power to the numerical control equipment.
And 203, under the condition that the external power supply stops supplying power to the numerical control equipment, controlling the capacitor module to supply power to the numerical control equipment, and simultaneously sending a backup signal to the numerical control equipment to start the numerical control equipment.
In another embodiment, if the capacitor module supplies power to the numerical control device, a power-down signal is also sent to the numerical control device.
For the method embodiments, since they substantially correspond to the apparatus embodiments, reference may be made to the apparatus embodiments for relevant portions of the description.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (10)
1. A power management apparatus of a numerical control device, the power management apparatus comprising: the device comprises a power supply transmission circuit, a capacitor module and a backup circuit;
the input end of the power supply transmission circuit is connected with an external power supply, the first output end of the power supply transmission circuit is connected with the numerical control equipment, and the second output end of the power supply transmission circuit is connected with the charging end of the capacitor module;
the power transmission end of the capacitor module is connected with the numerical control equipment;
one end of the backup circuit is connected with the charging end of the capacitor module, and the other end of the backup circuit is connected with the numerical control equipment;
under the condition that the output voltage of the external power supply is not less than the voltage threshold, the power supply transmission circuit respectively transmits the power supply of the external power supply to the numerical control equipment and the capacitor module so as to supply power to the numerical control equipment and charge the capacitor module;
and under the condition that the output voltage of the external power supply is smaller than a voltage threshold, the capacitor module supplies power to the numerical control equipment, and the backup circuit sends a backup signal to the numerical control equipment so as to write data running in the memory of the numerical control equipment into the hard disk of the numerical control equipment.
2. The power management device of a numerical control apparatus according to claim 1, wherein the power supply circuit includes: the input end, the first output end, the second output end, the first diode and the current limiter;
the anode of the first diode is connected with the input end, the cathode of the first diode is respectively connected with the first output end and one end of the current limiter, and the other end of the current limiter is connected with the second output end.
3. The power management apparatus of a numerical control device according to claim 2, characterized in that the power management apparatus further comprises: a second diode;
the anode of the second diode is connected with the power transmission terminal, and the cathode of the second diode is connected with the second output terminal.
4. The power management apparatus of a numerical control device according to claim 1, characterized in that the power management apparatus further comprises: a power-down starting circuit;
and under the condition that the numerical control equipment is shut down and the output voltage of the external power supply is not less than the voltage threshold, the power-down starting circuit sends a starting signal to the numerical control equipment so as to restart the numerical control equipment.
5. The power management apparatus of a numerical control device according to claim 1, characterized in that the power management apparatus further comprises: a power-down detection circuit;
one end of the power failure detection circuit is connected with the power transmission end, and the other end of the power failure detection circuit is connected with the numerical control equipment;
and under the condition that the capacitor module supplies power to the numerical control equipment, the power failure detection circuit sends a power failure signal to the numerical control equipment.
6. The power management apparatus of a numerical control device according to claim 1, characterized in that the power management apparatus further comprises: a filter;
and the power supply transmission circuit transmits the power supply of the external power supply to the numerical control equipment and the capacitor module through the filter respectively.
7. The power management device of a numerical control apparatus according to claim 1, characterized by further comprising: an AC/DC booster and a DC/AC converter;
and the power supply delivery circuit delivers the power supply of the external power supply to the numerical control equipment through the alternating current/direct current booster and the direct current/alternating current converter.
8. The power management apparatus of a numerical control device according to claim 1, characterized in that the power management apparatus further comprises: a DC/DC booster;
and the capacitor module supplies power to the numerical control equipment through the direct current/direct current booster.
9. A power management method of a numerical control device is characterized by comprising the following steps:
monitoring the power supply state of an external power supply to the numerical control equipment;
under the condition that the external power supply is monitored to supply power to the numerical control equipment, acquiring partial power supply of the external power supply to charge a capacitor module;
and under the condition that the external power supply stops supplying power to the numerical control equipment, the capacitor module supplies power to the numerical control equipment and simultaneously sends a backup signal to the numerical control equipment so that the numerical control equipment writes data of memory operation into a hard disk.
10. The power management method of a numerical control device according to claim 9, further comprising:
and sending a power failure signal to the numerical control equipment under the condition that the capacitor module supplies power to the numerical control equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010218483.8A CN113452131A (en) | 2020-03-25 | 2020-03-25 | Power supply management device and method of numerical control equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010218483.8A CN113452131A (en) | 2020-03-25 | 2020-03-25 | Power supply management device and method of numerical control equipment |
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| Publication Number | Publication Date |
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| CN113452131A true CN113452131A (en) | 2021-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010218483.8A Withdrawn CN113452131A (en) | 2020-03-25 | 2020-03-25 | Power supply management device and method of numerical control equipment |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050275443A1 (en) * | 2004-06-15 | 2005-12-15 | Shuey Kenneth C | Power supply restart delay prevention circuit |
| CN101807799A (en) * | 2010-04-27 | 2010-08-18 | 天津大学 | Super capacitor energy storage type power quality compensator |
| CN204256419U (en) * | 2014-10-31 | 2015-04-08 | 青岛天迅电气有限公司 | Delayed power failure device |
| CN204496928U (en) * | 2015-02-04 | 2015-07-22 | 北京和利时机器控制技术有限公司 | A kind of memory data power down holding device |
| CN105468127A (en) * | 2015-11-24 | 2016-04-06 | 深圳市共济科技有限公司 | Real-time data acquisition system and power failure data saving circuit and method thereof |
| CN106300638A (en) * | 2016-08-30 | 2017-01-04 | 株洲中车时代电气股份有限公司 | A kind of low-voltage power down overrun control and control method |
| CN107403644A (en) * | 2017-05-22 | 2017-11-28 | 宜鼎国际股份有限公司 | Possesses the flash memory device of abnormal power protection |
| CN207586677U (en) * | 2017-09-04 | 2018-07-06 | 浙江正泰电器股份有限公司 | Time switch |
-
2020
- 2020-03-25 CN CN202010218483.8A patent/CN113452131A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050275443A1 (en) * | 2004-06-15 | 2005-12-15 | Shuey Kenneth C | Power supply restart delay prevention circuit |
| CN101807799A (en) * | 2010-04-27 | 2010-08-18 | 天津大学 | Super capacitor energy storage type power quality compensator |
| CN204256419U (en) * | 2014-10-31 | 2015-04-08 | 青岛天迅电气有限公司 | Delayed power failure device |
| CN204496928U (en) * | 2015-02-04 | 2015-07-22 | 北京和利时机器控制技术有限公司 | A kind of memory data power down holding device |
| CN105468127A (en) * | 2015-11-24 | 2016-04-06 | 深圳市共济科技有限公司 | Real-time data acquisition system and power failure data saving circuit and method thereof |
| CN106300638A (en) * | 2016-08-30 | 2017-01-04 | 株洲中车时代电气股份有限公司 | A kind of low-voltage power down overrun control and control method |
| CN107403644A (en) * | 2017-05-22 | 2017-11-28 | 宜鼎国际股份有限公司 | Possesses the flash memory device of abnormal power protection |
| CN207586677U (en) * | 2017-09-04 | 2018-07-06 | 浙江正泰电器股份有限公司 | Time switch |
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Address after: Room 5124, building C, 555 Dongchuan Road, Minhang District, Shanghai 200241 Applicant after: SHANGHAI LYNUC NUMERICAL CONTROL TECHNOLOGY CO.,LTD. Address before: Room 5124, building C, 555 Dongchuan Road, Minhang District, Shanghai 200241 Applicant before: SHANGHAI LYNUC CNC TECHNOLOGY Co.,Ltd. |
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Application publication date: 20210928 |