CN107482573A - A kind of overload-protective intelligent regulator device of low-voltage electrical apparatus - Google Patents
A kind of overload-protective intelligent regulator device of low-voltage electrical apparatus Download PDFInfo
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- CN107482573A CN107482573A CN201710671627.3A CN201710671627A CN107482573A CN 107482573 A CN107482573 A CN 107482573A CN 201710671627 A CN201710671627 A CN 201710671627A CN 107482573 A CN107482573 A CN 107482573A
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- Prior art keywords
- overload
- signal
- electrical apparatus
- low
- voltage electrical
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/006—Calibration or setting of parameters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of overload-protective intelligent regulator device of low-voltage electrical apparatus, including insulation protecting box, the front of insulation protecting box is inlaid with binding post, the inside of insulation protecting box is inlaid with cored slab, debug circuit is welded with cored slab, debug circuit includes intelligent processing unit, the signal acquisition terminal of intelligent processing unit is connected with signal acquisition module, signal acquisition module is connected to binding post by wire and carries out low-voltage electrical apparatus signal acquisition, signal acquisition module output end is connected with signal condition unit, signal condition unit is analyzed and processed the signal that signal acquisition module gathers, output signal to intelligent processing unit, the I/O ports of intelligent processing unit are connected with adjustable overload protection unit, intelligent processing unit is also associated with radio communication mold.The present invention can facilitate silk realize overload protection threshold range adjustment, and can carry out remote online debugging change.
Description
Technical field
The present invention relates to field of electrical equipment, the overload-protective intelligent regulator device of specially a kind of low-voltage electrical apparatus.
Background technology
Low-voltage electrical apparatus is a kind of signal that can be according to the external world and requirement, manually or automatically on-off circuit, to realize
The element or equipment of switching, control, protection, detection, conversion and regulation to circuit or non-electrical object.Control apparatus presses its work
The height of voltage, to exchange 1200V, direct current 1500V as boundary, high voltage control electrical equipment can be divided into and low-voltage controling appliance two is big
Class.Generally speaking, low-voltage electrical apparatus can be divided into electrical power distribution apparatus and the major class of control apparatus two, be the basic composition of assembled electric equipment
Element.It is most of to use low-voltage power supply, therefore electric elements in industry, agricultural, traffic, national defence and people's electricity consumption department
Quality will directly influence the reliability of low-voltage power supply system.For low-voltage electrical apparatus, because electrical equipment rated voltage is smaller,
It frequently can lead to electrical equipment and overload phenomenon occur, if not having overload protection arrangement, or cause whole equipment to be damaged.It is but existing
The threshold range of some protection devices is constant, is simply possible to use in fixed equipment, is not suitable for other equipment.
The content of the invention
In order to overcome the shortcomings of prior art, the present invention provides a kind of overload-protective intelligent regulator dress of low-voltage electrical apparatus
Put, silk can be facilitated to realize the adjustment of the threshold range of overload protection, and remote online debugging can be carried out and changed.
The technical solution adopted for the present invention to solve the technical problems is：A kind of overload-protective intelligent regulator of low-voltage electrical apparatus
Device, including insulation protecting box, the front of the insulation protecting box are inlaid with binding post, and the binding post is connected by wire
The output end of low-voltage electrical apparatus is connected to, the inside of insulation protecting box is inlaid with cored slab, debug circuit is welded with cored slab, debugging
Circuit includes intelligent processing unit, and the signal acquisition terminal of the intelligent processing unit is connected with signal acquisition module, the signal
Acquisition module is connected to binding post by wire and carries out low-voltage electrical apparatus signal acquisition, and signal acquisition module output end is connected with letter
Number conditioning unit, the signal condition unit are analyzed and processed the signal that signal acquisition module gathers, and output signal to intelligence
Energy processing unit, the I/O ports of the intelligent processing unit are connected with adjustable overload protection unit, the adjustable overload protection list
The power end that member is connected to low-voltage electrical apparatus realizes overload protection, and intelligent processing unit is also associated with wireless communication module, the nothing
Line communication module is used to carry out communications.
As a kind of technical scheme for having choosing of the present invention, the intelligent processing unit includes embeded processor, described embedding
Entering formula processor and use STM32F103 family chips, chip periphery is connected with clock crystal oscillator and reset circuit composition minimum system,
And the power end of chip is connected with chargeable lithium cell and is powered.
As a kind of technical scheme for having choosing of the present invention, the I/O ports of the embeded processor are also associated with DDR storages
Device, the DDR memory are used to carry out data acquisition operations, and the COM1 of embeded processor is also associated with RS232 conversions
Device, RS232 converters are connected at the port of wireless communication unit.
As a kind of technical scheme for having choosing of the present invention, the signal acquisition module includes single-phase selecting switch, the list
The input of phase selecting switch is connected by wire with the inner core of binding post with shell, and the output end of single-phase selecting switch connects
Transformer is connected to, the output end of the transformer is connected with voltage sample device, and the voltage sample device passes the signal collected
Transport to signal condition unit.
As a kind of technical scheme for having choosing of the present invention, the signal condition unit includes preamplifier, described preposition
Amplifier is using OP07 composition double operational circuit compositions, and the output end of preamplifier is connected with rectifier filter, described whole
Stream wave filter output rectification filter signal to analog-digital converter, the analog-digital converter is connected to the input of embeded processor
Mouthful.
As a kind of technical scheme for having choosing of the present invention, the adjustable overload protection unit is overloaded using delay locked shut-off
Protection circuit, including power overload control circuit, the output end of the power overload control circuit are connected with electromagnetic relay, electricity
The normally opened end of magnetic relay is connected to the control terminal of low-voltage electrical apparatus.
As a kind of technical scheme for having choosing of the present invention, the power overload control circuit is by current-control type pulsewidth modulation
The threshold circuit composition of device UC3842 chips and LM358 double operationals composition, the input of threshold circuit is connected to embedding by wire
Enter the signal output part of formula processor, the output end of threshold circuit is connected to the COMP pins of UC3842 chips, UC3842 chips
Output end be connected to the control terminal of electromagnetic relay.
As a kind of technical scheme for having choosing of the present invention, the wireless communication module uses the wireless WIFI modules of ESP8266,
The inside modules are integrated with WiFi baseband chips, and the sending and receiving end of the WiFi baseband chips is connected with micro-strip dual-mode antenna, WiFi
The output end of baseband chip is connected by USB port with RS232 converters.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) present invention is carried out voltage signal with transformer using single-phase selecting switch and adopted by setting signal acquisition module
Collection operation, realize that the sensing for treating detection means converts using the electromagnetic induction principle of the coil of transformer, adjusted by signal
Preamplifier and rectifier filter in reason unit are amplified and carry out rectifying and wave-filtering operation, improve the steady of signal acquisition
Qualitative and accuracy；
(2) present invention is by setting intelligent processing unit, using embeded processor as control core, to power overload electricity
Control is adjusted in road, the convenient setting for carrying out overload threshold, the break-make of electromagnetic relay is carried out using power overload circuit
Control, and then can be adjusted conveniently by threshold power value of the embeded processor for overload protection, so as to meet
The load request of different low-voltage electrical apparatuses；
(3) present invention is realized wireless by setting wireless communication module using WiFi baseband chips and micro-strip dual-mode antenna
The information exchange of embeded processor and remote equipment is realized in communication, control, consequently facilitating carrying out remote control and debugging.
Brief description of the drawings
Fig. 1 is structured flowchart of the present invention；
Fig. 2 is insulation protecting box structural representation；
Fig. 3 is power overload control circuit schematic diagram.
In figure：1- insulation protecting boxes；2- binding posts；3- debug circuits；4- intelligent processing units；5- signal acquisition moulds
Block；6- signal condition units；7- is adjustable overload protection unit；8- wireless communication modules.
401- embeded processors；402- chargeable lithium cells；403-DDR memories；404-RS232 converters.
The single-phase selecting switch of 501-；502- transformers；503- voltage sample devices.
601- preamplifiers；602- rectifier filters；603- analog-digital converters.
701- power overload control circuits；702- electromagnetic relays.
801-WiFi baseband chips；802- micro-strip dual-mode antennas.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The explanation of following embodiment is refer to the attached drawing, can be to the specific embodiment implemented to the example present invention.
The direction and position term that the present invention is previously mentioned, for example, " on ", " in ", " under ", "front", "rear", "left", "right", " interior ", "
Outside ", " side " etc., only it is direction and position with reference to annexed drawings.Therefore, the direction and position term used is to illustrate
And understand the present invention, and it is not used to the limitation present invention.
Embodiment：
As depicted in figs. 1 and 2, the invention provides a kind of overload-protective intelligent regulator device of low-voltage electrical apparatus, including it is exhausted
Edge protecting box 1, the front of the insulation protecting box 1 are inlaid with binding post 2, and the binding post 2 is connected to low by wire
The output end of piezoelectricity device, the inside of insulation protecting box 1 are inlaid with cored slab, debug circuit 3, debug circuit are welded with cored slab
3 include intelligent processing unit 4, and the signal acquisition terminal of the intelligent processing unit 4 is connected with signal acquisition module 5, the signal
Acquisition module 5 is connected to binding post 2 by wire and carries out low-voltage electrical apparatus signal acquisition, the connection of the output end of signal acquisition module 5
There is signal condition unit 6, the signal condition unit 6 is analyzed and processed the signal that signal acquisition module 5 gathers, output letter
Number to intelligent processing unit 4, the I/O ports of the intelligent processing unit 4 are connected with adjustable overload protection unit 7, described adjustable
The power end that overload protection unit 7 is connected to low-voltage electrical apparatus realizes overload protection, and intelligent processing unit 4 is also associated with radio communication
Module 8, the wireless communication module 8 are used to carry out communications；The insulation protecting box 1, which is adopted, to be made from an insulative material, can
Structure effectively inside protection, the binding post 2 are connected to low-voltage electrical apparatus to be tested, the debug circuit 3 by wire
Operated for carrying out parameter acquisition and adjustment；
Further illustrate, the intelligent processing unit 4 includes embeded processor 401, the embeded processor
401 use STM32F103 family chips, and chip periphery is connected with clock crystal oscillator and reset circuit composition minimum system, and chip
Power end be connected with chargeable lithium cell 402 and be powered；The I/O ports of the embeded processor 401 are also associated with DDR
Memory 403, the DDR memory 403 are used to carry out data acquisition operations, and the COM1 of embeded processor 401 also connects
RS232 converters 404 are connected to, RS232 converters 404 are connected at the port of wireless communication unit 8；The intelligent processing unit
4 be the control core of whole device, and embeded processor 401 is used to carry out parameter acquisition and control instruction output, to adjustable mistake
Carry protection location 7 and enter line range adjustment operation；The chargeable lithium cell 402 exports 5V DC voltages to embeded processor
401 power supplies, DDR memory 403 are used to carry out memory expansion and carry out programmed instruction and parameter reading and writing, the RS232 in real time
Converter 404 is used to carry out Data Format Transform, for being communicated with external device (ED)；
The signal acquisition module 5 includes single-phase selecting switch 501, and the input of the single-phase selecting switch 501 passes through
Wire is connected with the inner core of binding post 2 with shell, and the output end of single-phase selecting switch 501 is connected with transformer 502, described
The output end of transformer 502 is connected with voltage sample device 503, and the voltage sample device 503 transmits the signal collected to letter
Number conditioning unit 6；The single-phase selecting switch 501 is used to introduce single-phase alternating current, the transformer 502 by mutual inductance effect from
And induced voltage, then will be transmitted by voltage sample device 503 after voltage signal acquisition to signal condition unit 6；
As shown in figure 1, the signal condition unit 6 includes preamplifier 601, the preamplifier 601 uses
OP07 composition double operational circuit compositions, and the output end of preamplifier is connected with rectifier filter 602, the rectifier filter
602 output rectification filter signals to analog-digital converter 603, the analog-digital converter 603 is connected to the defeated of embeded processor 401
Inbound port；The voltage signal collected is amplified operation by the preamplifier 601, and the signal after amplification is transmitted to rectification
Voltage after amplification is carried out rectifying and wave-filtering operation, obtains direct current signal and filter by wave filter 602, the rectifier filter 602
Noise wave removing, obtained signal are fed through analog-digital converter 603, and adjustable overload protection unit is fed through after being converted into data signal；
As shown in figures 1 and 3, the adjustable overload protection unit 7 uses delay locked shut-off overload protecting circuit, including
Power overload control circuit 701, the output end of the power overload control circuit 701 are connected with electromagnetic relay 702, electromagnetism after
The normally opened end of electrical equipment 702 is connected to the control terminal of low-voltage electrical apparatus, and electromagnetic relay is controlled using power overload control circuit 701
702 break-make；The power overload control circuit 701 is by current control mode pulse width modulator UC3842 chips and the double fortune of LM358
The threshold circuit composition of composition is put, the input of threshold circuit is connected to the signal output of embeded processor 401 by wire
End, the output end of threshold circuit are connected to the COMP pins of UC3842 chips, the output ends of UC3842 chips be connected to electromagnetism after
The control terminal of electrical equipment 702；UC3842 using export compensation pin as feedback signal input when, the voltage of this pin can be with the increasing of load
Add and constantly rise, when reaching maximum power point, the voltage for now exporting compensation pin is about 5V, it is possible to is used in primary side
The voltage of COMP pin controls overpower point, and Op1 exports high level when COMP pin voltages reach power set point voltage, passes through
R11 charges to C4, and when the partial pressure value being charged on R10, Op2 exports high level, turns on Q2, due to the positive feedback that Q1, Q2 are strong
Effect makes equivalent SCR circuits constant conduction, COMP pin voltage pull-down is locked power supply simultaneously by Q2, only when AC connects again again
It is fashionable to recover；
The wireless communication module 8 uses the wireless WiFi modules of ESP8266, and the inside modules are integrated with WiFi baseband chips
801, the sending and receiving end of the WiFi baseband chips 801 is connected with micro-strip dual-mode antenna 802, the output end of WiFi baseband chips 801
It is connected by USB port with RS232 converters 404；The micro-strip dual-mode antenna 802 is used to carry out signal reception and transmitting behaviour
Make, the baseband signal for receiving transmitting carries out decoding operate operation by WiFi baseband chips 801, and decoded signal is transmitted to embedding
Enter formula processor 401, corresponding operating is carried out after the reception signal of embeded processor 401, or embeded processor 401 will connect
The signal output received is sent after being encoded to WiFi baseband chips 801 by micro-strip dual-mode antenna 801.
In summary, the main characteristic of the invention lies in that：
(1) present invention is carried out voltage signal with transformer using single-phase selecting switch and adopted by setting signal acquisition module
Collection operation, realize that the sensing for treating detection means converts using the electromagnetic induction principle of the coil of transformer, adjusted by signal
Preamplifier and rectifier filter in reason unit are amplified and carry out rectifying and wave-filtering operation, improve the steady of signal acquisition
Qualitative and accuracy；
(2) present invention is by setting intelligent processing unit, using embeded processor as control core, to power overload electricity
Control is adjusted in road, the convenient setting for carrying out overload threshold, the break-make of electromagnetic relay is carried out using power overload circuit
Control, and then can be adjusted conveniently by threshold power value of the embeded processor for overload protection, so as to meet
The load request of different low-voltage electrical apparatuses；
(3) present invention is realized wireless by setting wireless communication module using WiFi baseband chips and micro-strip dual-mode antenna
The information exchange of embeded processor and remote equipment is realized in communication, control, consequently facilitating carrying out remote control and debugging.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.
Claims (8)
- A kind of 1. overload-protective intelligent regulator device of low-voltage electrical apparatus, it is characterised in that：It is described exhausted including insulation protecting box (1) The front of edge protecting box (1) is inlaid with binding post (2), and the binding post (2) is connected to the defeated of low-voltage electrical apparatus by wire Go out end, the inside of insulation protecting box (1) is inlaid with cored slab, and debug circuit (3), debug circuit (3) bag are welded with cored slab Intelligent processing unit (4) is included, the signal acquisition terminal of the intelligent processing unit (4) is connected with signal acquisition module (5), the letter Number acquisition module (5) is connected to binding post (2) by wire and carries out low-voltage electrical apparatus signal acquisition, and signal acquisition module (5) is defeated Go out end and be connected with signal condition unit (6), the signal that the signal condition unit (6) gathers signal acquisition module (5) is carried out Analyzing and processing, outputs signal to intelligent processing unit (4), the I/O ports of the intelligent processing unit (4) are connected with adjustable overload Protection location (7), the power end that the adjustable overload protection unit (7) is connected to low-voltage electrical apparatus realize overload protection, at intelligence Reason unit (4) is also associated with wireless communication module (8), and the wireless communication module (8) is used to carry out communications.
- A kind of 2. overload-protective intelligent regulator device of low-voltage electrical apparatus according to claim 1, it is characterised in that：The intelligence Energy processing unit (4) includes embeded processor (401), and the embeded processor (401) uses STM32F103 series cores Piece, chip periphery is connected with clock crystal oscillator and reset circuit composition minimum system, and the power end of chip is connected with chargeable lithium Battery (402) is powered.
- A kind of 3. overload-protective intelligent regulator device of low-voltage electrical apparatus according to claim 1, it is characterised in that：It is described embedding The I/O ports for entering formula processor (401) are also associated with DDR memory (403), and the DDR memory (403) is used to carry out data Acquisition operations, the COM1 of embeded processor (401) are also associated with RS232 converters (404), RS232 converters (404) It is connected at the port of wireless communication unit (8).
- A kind of 4. overload-protective intelligent regulator device of low-voltage electrical apparatus according to claim 1, it is characterised in that：The letter Number acquisition module (5) includes single-phase selecting switch (501), and the input of the single-phase selecting switch (501) is by wire with connecing The inner core of line terminals (2) is connected with shell, and the output end of single-phase selecting switch (501) is connected with transformer (502), described mutual The output end of sensor (502) is connected with voltage sample device (503), and the voltage sample device (503) transmits the signal collected To signal condition unit (6).
- A kind of 5. overload-protective intelligent regulator device of low-voltage electrical apparatus according to claim 1, it is characterised in that：The letter Number conditioning unit (6) includes preamplifier (601), and the preamplifier (601) is using OP07 composition double operational circuit groups Into, and the output end of preamplifier (601) is connected with rectifier filter (602), the rectifier filter (602) exports rectification Filtering signal to analog-digital converter (603), the analog-digital converter (603) is connected to the input of embeded processor (401) Mouthful.
- A kind of 6. overload-protective intelligent regulator device of low-voltage electrical apparatus according to claim 5, it is characterised in that：It is described can Overload protection unit (7) is adjusted to use delay locked shut-off overload protecting circuit, including power overload control circuit (701), it is described The output end of power overload control circuit (701) is connected with electromagnetic relay (702), and the normally opened end of electromagnetic relay (702) connects It is connected to the control terminal of low-voltage electrical apparatus.
- A kind of 7. overload-protective intelligent regulator device of low-voltage electrical apparatus according to claim 5, it is characterised in that：The work( The thresholding electricity that rate overload control circuit (701) is made up of current control mode pulse width modulator UC3842 chips and LM358 double operationals Road forms, and the input of threshold circuit is connected to the signal output part of embeded processor (401) by wire, threshold circuit Output end is connected to the COMP pins of UC3842 chips, and the output end of UC3842 chips is connected to the control of electromagnetic relay (702) End processed.
- A kind of 8. overload-protective intelligent regulator device of low-voltage electrical apparatus according to claim 5, it is characterised in that：The nothing Line communication module (8) uses the wireless WIFI modules of ESP8266, and the inside modules are integrated with WiFi baseband chips (801), described The sending and receiving end of WiFi baseband chips (801) is connected with micro-strip dual-mode antenna (802), and the output end of WiFi baseband chips (801) is led to USB port is crossed with RS232 converters (404) to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710671627.3A CN107482573A (en) | 2017-08-08 | 2017-08-08 | A kind of overload-protective intelligent regulator device of low-voltage electrical apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710671627.3A CN107482573A (en) | 2017-08-08 | 2017-08-08 | A kind of overload-protective intelligent regulator device of low-voltage electrical apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107482573A true CN107482573A (en) | 2017-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710671627.3A Pending CN107482573A (en) | 2017-08-08 | 2017-08-08 | A kind of overload-protective intelligent regulator device of low-voltage electrical apparatus |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1835167A (en) * | 2006-03-07 | 2006-09-20 | 张世兴 | Multi-range time program controlled circuit breaker |
| CN101202185A (en) * | 2006-12-12 | 2008-06-18 | 张世兴 | Intelligent secure prevention circuit breakers |
| CN101572442A (en) * | 2009-03-25 | 2009-11-04 | 东南大学 | Intelligent protection type permanent magnetic contactor capable of performing remote communication |
| CN103683204A (en) * | 2012-09-26 | 2014-03-26 | 深圳市海洋王照明工程有限公司 | Switching power supply over-current protection circuit |
-
2017
- 2017-08-08 CN CN201710671627.3A patent/CN107482573A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1835167A (en) * | 2006-03-07 | 2006-09-20 | 张世兴 | Multi-range time program controlled circuit breaker |
| CN101202185A (en) * | 2006-12-12 | 2008-06-18 | 张世兴 | Intelligent secure prevention circuit breakers |
| CN101572442A (en) * | 2009-03-25 | 2009-11-04 | 东南大学 | Intelligent protection type permanent magnetic contactor capable of performing remote communication |
| CN103683204A (en) * | 2012-09-26 | 2014-03-26 | 深圳市海洋王照明工程有限公司 | Switching power supply over-current protection circuit |
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Application publication date: 20171215 |
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