CN204556737U - A kind of microcomputer protecting controller with the alarm of random phase phase shortage - Google Patents
A kind of microcomputer protecting controller with the alarm of random phase phase shortage Download PDFInfo
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- CN204556737U CN204556737U CN201520234293.XU CN201520234293U CN204556737U CN 204556737 U CN204556737 U CN 204556737U CN 201520234293 U CN201520234293 U CN 201520234293U CN 204556737 U CN204556737 U CN 204556737U
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Abstract
The utility model discloses a kind of microcomputer protecting controller with the alarm of random phase phase shortage, comprise voltage acquisition module, also comprise detection alarm module, described detection alarm module comprises detection module and alarm module, described detection module is coupled to voltage acquisition module to receive three-phase voltage, the output detections signal when three-phase voltage random phase phase shortage; Described alarm module is in response to detection signal.Microcomputer protecting controller of the present utility model, has the detection module for detecting three-phase power supply phase sequence and the number of phases, and has alarm module, can report to the police when the random phase phase shortage of three-phase supply.
Description
Technical field
The utility model relates to a kind of microcomputer protecting controller with the alarm of random phase phase shortage.
Background technology
Microcomputer protecting controller does not go out chip single-chip microcomputer by high integration, bus, high-precision current voltage transformer (VT), high insulation resistance export the parts such as auxiliary reclay, high-reliability switch power module and form, for measuring, controlling, protection and communication.
Existing application number be 200710051671.0 patent discloses a kind of microcomputer protecting controller, have: dsp processor; Be connected to the data memory module of dsp processor, it has the FLASH storage unit and EEPROM memory cell that are connected with dsp processor respectively; Be connected to the communication interface modules of dsp processor, it has RS485 interface, Ethernet interface; Be connected to the digital I/O interface module of dsp processor, it has 12 way switch amount inputs, 8 way switch amounts outputs; Be connected to the analogue collection module of dsp processor, it has, and the 4 road voltages being connected to dsp processor respectively input, 9 road voltages inputs; Be connected to the RTC module of dsp processor, it has the real-time clock being connected to dsp processor, and this real-time clock is connected with backup battery.
But microcomputer protecting controllers most in above-mentioned patent and prior art, all do not possess the detection module of the random phase phase shortage of three-phase electricity, in Practical Project, the random phase phase shortage problem of power supply can cause load end power supply string phase, and then burns load.
Utility model content
For the deficiency that prior art exists; the purpose of this utility model is to provide a kind of microcomputer protecting controller with the alarm of random phase phase shortage; there is the detection module for detecting three-phase power supply phase sequence and the number of phases, and there is alarm module, can report to the police when the random phase phase shortage of three-phase supply.
For achieving the above object, the invention provides following technical scheme: a kind of microcomputer protecting controller with the alarm of random phase phase shortage, comprises voltage acquisition module, also comprises detection alarm module, described detection alarm module comprises:
Detection module: be coupled to voltage acquisition module to receive three-phase voltage, the output detections signal when three-phase voltage random phase phase shortage;
Alarm module: in response to detection signal.
By adopting technique scheme; microcomputer protecting controller of the present utility model; its detection module carries out time delay in various degree to three-phase voltage; three-phase voltage after time delay is superposed; when disorderly also not having phase shortage mutually, three-phase voltage after the delay stack result is zero, when random phase or phase shortage; three-phase voltage after the delay stack result is non-vanishing, now exports alarm module to and alarm module can be driven to report to the police.
The utility model is set to further: described detection module comprises:
Pressure unit: the efferent being coupled to voltage acquisition module, to receive three-phase voltage, carries out output buck signal after step-down to it;
Phase-shifting unit: be coupled to pressure unit to receive buck signal, and export phase shift signal after phase shift is carried out to buck signal;
Rectification unit: be coupled to phase-shifting unit to receive phase shift signal, and rectification is carried out to export rectified signal to it.
The utility model is set to further: described pressure unit comprises the restriction limiting its internal current size.
The utility model is set to further: described phase-shifting unit comprises RC phase shift network.
The utility model is set to further: described alarm module comprises:
Filter unit: be coupled to rectification unit to receive rectified signal, and filtering is carried out with output filtering signal to it;
Alarm unit: in response to filtering signal.
By adopting technique scheme, microcomputer protecting controller of the present utility model, by RC phase shift network, phase shift is carried out to three-phase voltage, and, the phase place of movement is 60 degree or 120 degree, if three-phase electricity is with A phase, B phase, C phase phase sequence arrangement, so, by namely completely anti-phase in A phase after delayed for B phase 60 degree, carried out superposition can cancel out each other, in like manner also can be applicable to C phase, if A phase, B phase, C phase occurs disorderly mutually or arbitraryly to lack mutually, that just cannot be offset, now, rectification unit just has voltage to export, unit rear drive alarm unit is reported to the police after filtering.
Compared to microcomputer protecting controller of the prior art; microcomputer protecting controller of the present utility model has following advantage: microcomputer protecting controller of the present utility model; there is the detection module for detecting three-phase power supply phase sequence and the number of phases; and there is alarm module, can report to the police when the random phase phase shortage of three-phase supply.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the utility model microcomputer protecting controller detection alarm module.
Reference numeral: A, detection alarm module; A1, detection module; A11, pressure unit; A111, restriction; A12, phase-shifting unit; A13, rectification unit; A2, alarm module; A21, filter unit; A22, alarm unit.
Embodiment
Be described further with reference to the embodiment of Fig. 1 to the microcomputer protecting controller of band of the present utility model random phase phase shortage alarm.
Microcomputer protecting controller of the present utility model; comprise voltage acquisition module; also comprise detection alarm modules A 2; described detection alarm modules A 2 comprises, and is coupled to voltage acquisition module to receive three-phase voltage, and to the time delay that the phase place of three-phase voltage is carried out in various degree; three-phase voltage after time delay is superposed; the detection module A1 of output detections signal when three-phase voltage random phase phase shortage, and be coupled to detection module A1 to respond detection signal, and the alarm module A2 reported to the police.
Described detection module A1 comprises, be coupled to the efferent of voltage acquisition module to receive three-phase voltage, it is carried out to the pressure unit A11 of output buck signal after step-down, be coupled to pressure unit A11 to receive buck signal, and after phase shift is carried out to buck signal, export the phase-shifting unit A12 of phase shift signal, and be coupled to phase-shifting unit A12 to receive phase shift signal, and rectification is carried out to export the rectification unit A13 of rectified signal to it.Described pressure unit A11 comprises restriction A111.Described phase-shifting unit A12 comprises RC phase shift network.
Described alarm module A2 comprises, and is coupled to rectification unit A13 to receive rectified signal, and carries out filtering with the filter unit A21 of output filtering signal to it, is coupled to filter unit A21 to respond filtering signal, and the alarm unit A22 reported to the police.
More particularly, described pressure unit A11 comprises transformer, this transformer can be lowered the voltage magnitude that voltage acquisition module exports, described restriction A111 is current-limiting resistance Rs, described current-limiting resistance Rs can limiting transformer secondary side export current amplitude, described RC phase shift network is formed in parallel by modulated resistance Ry and modulating capacitor Cy, the resistance being wherein series at modulating capacitor Cy is equivalent resistance r, the resistance of equivalence modulating capacitor Cy, its effect can be ignored, described alarm unit A22 comprises LED and hummer B, described LED and hummer B are all connected in parallel on the two ends of filter unit A21.
Specific implementation process:
Three pins of transformer are coupled to the output terminal of voltage acquisition module, three-phase voltage is received, and by the turn ratio of primary coil and secondary coil, produce the voltage signal that amplitude is less, be sent to phase-shifting unit A12 by three pins of secondary coil.
Expressing formula according to the phase voltage trigonometric function of three-phase alternating current knowledge three-phase alternating current is: uA=Umsin ω t, uB=Umsin (ω t-2 π/3), uC=Umsin (ω t+2 π/3), analyzes carrier phase shift 2 π/3 of the every phase of the known three-phase alternating-current supply of above-mentioned expression formula.For uA and uB phase, if uB phasing degree is postponed π/3 obtain: uB=Umsin (ω t-2 π/3-π/3)=-Umsin ω t, be in rp state with uA=Umsin ω t, be in like manner in rp state by behind uC time delay π/3 with uB, uA is postponed π/3 afterwards and uC be in rp state.If the phase voltage after postponing mutually superposed by positive sequence uA-uB-uC-uA, under the state of three-phase equilibrium, its result is 0.But mutually superpose when backward, its result can not be then 0, such as superpose with the phase sequence phase shift of uA-uC-uB-uA, uC phasing degree is postponed π/3 obtain: uC=Umsin (ω t+2 π/3-π/3)=Umsin (ω t+ π/3) advanced π/3, phasing degree compared with uA=Umsin ω t, instead of rp state.
Therefore, when the situation of random phase phase shortage does not appear in three-phase voltage, it is zero that rectification unit A13 exports, and when random phase or phase shortage, three-phase voltage after the delay stack result is non-vanishing, now exports alarm module A2 to and alarm module A2 can be driven to report to the police.
In sum, microcomputer protecting controller of the present utility model, has the detection module A1 for detecting three-phase power supply phase sequence and the number of phases, and has alarm module A2, can report to the police when the random phase phase shortage of three-phase supply.
The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. the microcomputer protecting controller with the alarm of random phase phase shortage, comprises voltage acquisition module, it is characterized in that: also comprise detection alarm module, and described detection alarm module comprises:
Detection module: be coupled to voltage acquisition module to receive three-phase voltage, the output detections signal when three-phase voltage random phase phase shortage;
Alarm module: in response to detection signal.
2. the microcomputer protecting controller of band according to claim 1 random phase phase shortage alarm, is characterized in that: described detection module comprises:
Pressure unit: the efferent being coupled to voltage acquisition module, to receive three-phase voltage, carries out output buck signal after step-down to it;
Phase-shifting unit: be coupled to pressure unit to receive buck signal, and export phase shift signal after phase shift is carried out to buck signal;
Rectification unit: be coupled to phase-shifting unit to receive phase shift signal, and rectification is carried out to export rectified signal to it.
3. the microcomputer protecting controller of band according to claim 2 random phase phase shortage alarm, is characterized in that: described pressure unit comprises the restriction limiting its internal current size.
4. the microcomputer protecting controller of band according to claim 2 random phase phase shortage alarm, is characterized in that: described phase-shifting unit comprises RC phase shift network.
5. the microcomputer protecting controller of band according to claim 2 random phase phase shortage alarm, is characterized in that: described alarm module comprises:
Filter unit: be coupled to rectification unit to receive rectified signal, and filtering is carried out with output filtering signal to it;
Alarm unit: in response to filtering signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520234293.XU CN204556737U (en) | 2015-04-17 | 2015-04-17 | A kind of microcomputer protecting controller with the alarm of random phase phase shortage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520234293.XU CN204556737U (en) | 2015-04-17 | 2015-04-17 | A kind of microcomputer protecting controller with the alarm of random phase phase shortage |
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| CN204556737U true CN204556737U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520234293.XU Expired - Fee Related CN204556737U (en) | 2015-04-17 | 2015-04-17 | A kind of microcomputer protecting controller with the alarm of random phase phase shortage |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429474A (en) * | 2015-11-19 | 2016-03-23 | 北京交通大学 | Novel three-phase sine wave signal source |
| CN110297133A (en) * | 2019-07-11 | 2019-10-01 | 广东志高暖通设备股份有限公司 | Phase shortage and circuit of testing the phase sequence, printed circuit board and outdoor machine of air-conditioner |
-
2015
- 2015-04-17 CN CN201520234293.XU patent/CN204556737U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429474A (en) * | 2015-11-19 | 2016-03-23 | 北京交通大学 | Novel three-phase sine wave signal source |
| CN105429474B (en) * | 2015-11-19 | 2018-09-11 | 北京交通大学 | A kind of three-phase sinusoidal signal source |
| CN110297133A (en) * | 2019-07-11 | 2019-10-01 | 广东志高暖通设备股份有限公司 | Phase shortage and circuit of testing the phase sequence, printed circuit board and outdoor machine of air-conditioner |
| CN110297133B (en) * | 2019-07-11 | 2021-07-27 | 广东志高暖通设备股份有限公司 | Phase loss and phase sequence detection circuit, printed circuit board and air conditioner outdoor unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 Termination date: 20160417 |