CN209592965U - A kind of threephase motor voltage monitor - Google Patents
A kind of threephase motor voltage monitor Download PDFInfo
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- CN209592965U CN209592965U CN201920275081.4U CN201920275081U CN209592965U CN 209592965 U CN209592965 U CN 209592965U CN 201920275081 U CN201920275081 U CN 201920275081U CN 209592965 U CN209592965 U CN 209592965U
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Abstract
The utility model discloses a kind of threephase motor voltage monitor, solving the different motor of voltage value cannot general threephase motor voltage monitor, voltage protection safe range the problems such as can not being arranged.It includes sampling input module, filtering conversion circuit, micro processing module, display module, key setup module, relay execution module and output driving amplification module；Micro processing module is equipped with multiple overvoltage/undervoltage preset value storage units, Phase sequence detection program, Voltage unbalance detects program, phase loss detection storage unit and comparator, the overvoltage/undervoltage preset value that micro processing module is inputted according to key setup module, Phase sequence detection, Voltage unbalance detection, the selection instruction of phase loss detection, control the more real-time three-phase mains voltage of comparator and corresponding overvoltage/undervoltage preset value, Phase sequence detection, Voltage unbalance detection, phase loss detection, and output driving amplification module is controlled according to comparison result, to control the output of relay execution module.
Description
Technical field
The utility model relates to mechanical and electrical protection and fault diagnosis technology field, especially a kind of threephase motor voltage monitoring
Device.
Background technique
Threephase motor voltage monitor refers to that motor occurs short circuit during starting and running, stall, overload, lacks
There is very sensitive protective effect when the failures such as phase, under-voltage, over-voltage, unbalance, electric leakage, underloading, it can timely and effective reliable protection electricity
Motivation.Threephase motor voltage monitor usually has multiple voltage specification according to the voltage rating of motor, as 220VAC,
380VAC, 440VAC, 460VAC etc., different voltage rating motor are arranged in pairs or groups the threephase motor voltage of corresponding voltage value specification
Monitor use, terminal client using when need to be gone according to the voltage value of motor selection purchase different size product.It is so single
The threephase motor voltage monitor of a specification, can be only used on a kind of motor of voltage value, and use scope is very narrow, production
Producer needs while developing the product of different voltages value specification, increases production investment, has aggravated business burden, also gives terminal visitor
Family increases purchase cost.Moreover, the safe range of protection voltage exists in the threephase motor voltage monitor of a certain specification
It has just been fixedly installed when factory, its safe range ratio can not be separately arranged in the later period again, and flexibility is poor, and adaptability is low.
In addition, motor energy consumption currently on the market is serious, a large amount of waste of energy will be generated in use, causes visitor
The increase of family cost.
Summary of the invention
The purpose of this utility model: in order to overcome the drawbacks of the prior art, the utility model provides a kind of three-phase electric
Machine voltage monitor, solving the different motor of voltage value cannot general threephase motor voltage monitor, voltage protection safety
The problems such as range can not be arranged and motor is power-consuming.
The technical solution of the utility model includes: including sampling input module, filtering conversion circuit, micro processing module, showing
Show module, key setup module, relay execution module and output driving amplification module；The sampling input module connects respectively
Three firewires of motor are connect, and acquire three-phase mains voltage in real time, and are electrically connected with filtering conversion circuit；The filtering turns
Circuit connection micro processing module is changed, for being filtered to the three-phase voltage of acquisition, three-phase voltage is converted into low pressure output；
The key setup module is equipped with for inputting overvoltage/undervoltage preset value, Phase sequence detection, Voltage unbalance detection, phase loss detection
Selection instruction；The micro processing module is separately connected display module, key setup module, relay execution module and defeated
Drive amplification module out, the data processing system structure that the micro processing module is made of one chip microcomputer and its peripheral cell
At, and micro processing module is equipped with multiple overvoltage/undervoltage preset value storage units, Phase sequence detection program, Voltage unbalance and detects journey
Sequence, phase loss detection storage unit and comparator, the overvoltage/undervoltage that the micro processing module is inputted according to key setup module
Preset value, Phase sequence detection, Voltage unbalance detection, phase loss detection selection instruction, control the more real-time three-phase of comparator
Line voltage and corresponding overvoltage/undervoltage preset value, Phase sequence detection, Voltage unbalance detection, phase loss detection, and according to comparing
As a result output driving amplification module is controlled, to control the output of relay execution module；The relay execution module is used for
The movement of relay cut-off/close is executed under the driving signal control that micro processing module is sent.
By adopting the above technical scheme, overvoltage/undervoltage preset value selection instruction is input to by miniature processing by key setup module
Module, micro processing module control the more real-time three-phase mains voltage of comparator and corresponding overvoltage/undervoltage preset value, Phase sequence detection,
Voltage unbalance detection, phase loss detection, and output driving amplification module is controlled according to comparison result, control relay executes
Therefore the output of module, by the way that different overvoltage/undervoltage preset values is arranged, may be implemented to adapt to not to control the output of voltage
In addition the motor of same specification can also be configured protection voltage security range scale, having reached can be with flexible setting not
With voltage specification and protection voltage value setting, the adaptability of product is greatly improved.
The further setting of the utility model: display module connects micro processing module, includes acquisition in real time for showing
Line voltage value and selected overvoltage/undervoltage preset value, Phase sequence detection, Voltage unbalance detection, phase loss detection failure shape
State.
Using above-mentioned further setting, can real-time display various information, facilitate user to read and maintenance.
The further setting of the utility model: output driving amplification module is also connected with voltage regulating module, voltage regulating module
Output end connects motor.
Further it is arranged using above-mentioned, the control signal of output driving amplification module output is received, to control motor
Revolving speed, realize adjust motor energy consumption, thus achieve the purpose that economize on electricity consumption reduction.
The further setting again of the utility model: further including having input wires mouth, output connection mouth and contactor to connect
Line mouth, the input wires mouth, output connection mouth and contactor connection jaws are provided with connector interface and inserted sheet interface
Two kinds of interfaces.
Using above-mentioned setting further again, available for different connection modes is provided, user selects the suitable mode of connection according to demand,
With convenience.
Detailed description of the invention
Fig. 1 is the structural block diagram of the utility model specific embodiment；
Fig. 2 is the program flow diagram of the utility model specific embodiment；
Fig. 3 is the circuit diagram of the utility model specific embodiment；
Fig. 4 is the shape assumption diagram of the utility model specific embodiment；
Wherein, input wires mouth 1, output connection mouth 2, contactor connection jaws 3, connector interface 4, inserted sheet interface 5.
Specific embodiment
As shown in Figure 1-Figure 3, include sampling input module, filtering conversion circuit, micro processing module, display module,
Key setup module, relay execution module and output driving amplification module；Sampling input module is separately connected motor
Three firewires, and three-phase mains voltage is acquired in real time, and is electrically connected with filtering conversion circuit.It is miniature to filter conversion circuit connection
Three-phase voltage is converted into low pressure output for being filtered to the three-phase voltage of acquisition by processing module.Key setup module is set
There is the selection instruction for inputting overvoltage/undervoltage preset value, Phase sequence detection, Voltage unbalance detection, phase loss detection；Key packet
Selection key, up and down adjustment key and control key are included.
Micro processing module is separately connected display module, key setup module, relay execution module and output driving
Amplification module, micro processing module are made of the data processing system that one chip microcomputer and its peripheral cell form, minitype single-chip
Suitable commercial chip may be selected in machine, and STM8L052C6 type singlechip chip has been selected in this specific embodiment.Miniature processing mould
Block is equipped with multiple overvoltage/undervoltage preset value storage units, Phase sequence detection program, Voltage unbalance detection program, phase loss detection and deposits
Storage unit and comparator, comparator can select operational amplifier to constitute, can also be as passed through miniature list in this specific embodiment
Piece machine internal processes are realized.Overvoltage/undervoltage preset value, Phase sequence detection, the voltage that micro processing module is inputted according to key setup module
Imbalance detection, phase loss detection selection instruction, control the more real-time three-phase mains voltage of comparator with it is corresponding excessively deficient
Preset value, Phase sequence detection, Voltage unbalance detection, phase loss detection are pressed, and output driving amplification is controlled according to comparison result
Module, to control the output of relay execution module；Relay execution module is used for the driving sent in micro processing module
Signal controls lower execution relay cut-off/close movement.Phase sequence detection program is checked for phase sequence, and Voltage unbalance detects program
For detecting whether three-phase voltage balances, detects any two alternate voltage values and whether excessive differ, phase loss detection stores
Unit is for detecting whether phase loses.
Display module connects micro processing module, and includes LCD display, is used to show to include acquiring in real time
Line voltage value and selected overvoltage/undervoltage preset value, Phase sequence detection, Voltage unbalance detection, phase loss detection malfunction.
The utility model specific embodiment working principle: micro processing module controls voltage acquisition unit by internal processes
Real-time voltage is sampled, filtering conversion circuit is filtered the three-phase voltage of acquisition, three-phase voltage is converted into low pressure output,
Protection voltage specification and protection voltage ratio are set by key setup module, through micro processing module calculation processing, and led to
It crosses display module to show, driving relay carries out corresponding actions, to drive external connection contactor to carry out corresponding actions output.Example
Such as, voltage specification is selected as 120VAC, protection voltage ratio is set as 25%, when sample voltage 90VAC-150VAC it
Between when, micro processing module judges that normal operation, display module are shown normally at this time；When voltage lower than 90VAC or is higher than
When 150VAC, micro processing module judgement operation enters guard mode, and control relay disconnects, to close the fortune of motor
Row.When detecting that the failures such as over-voltage, under-voltage, electric leakage, phase shortage, three-phase imbalance occurs in motor, micro processing module triggering
Protection output is completed in the movement of relay execution module, and display module shows that fault message carries out breakdown judge.The utility model
Voltage specification design on to reach 0-650VAC settable, can satisfy all three-phase electrics on current domestic and international market in this way
Machine equipment.Upper range is set in 1%-18%, in the safe range for being satisfied with motor, to reach more preferable in protection voltage ratio
Protection is not damaged.
Output driving amplification module is also connected with voltage regulating module, and the output end of voltage regulating module connects motor.Receive output
The control signal of drive amplification module output realizes the energy consumption for adjusting motor, to reach section to control the revolving speed of motor
The purpose of electricity consumption reduction.
As shown in figure 4, the utility model further includes having input wires mouth 1, output connection mouth 2 and contactor connection jaws
3, input wires mouth 1, output connection mouth 2 and contactor connection jaws 3 are provided with connector interface 4 and 5 liang of inserted sheet interface
Kind interface.Connector interface 4 is usually connect by connector with outside line or device, and inserted sheet interface 5 provides male blade and uses
In connection outside line or device.
Claims (4)
1. a kind of threephase motor voltage monitor, it is characterised in that: include sampling input module, filter conversion circuit, is micro-
Type processing module, display module, key setup module, relay execution module and output driving amplification module；
The sampling input module is separately connected three firewires of motor, and acquires three-phase mains voltage in real time, and with filtering
Conversion circuit is electrically connected；
The filtering conversion circuit connects micro processing module, for being filtered to the three-phase voltage of acquisition, by three-phase voltage
It is converted into low pressure output；
The key setup module is equipped with for inputting overvoltage/undervoltage preset value, Phase sequence detection, Voltage unbalance detection, phase bit loss
The selection instruction of detection；
The micro processing module is separately connected display module, key setup module, relay execution module and output driving
Amplification module, the micro processing module are made of the data processing system that one chip microcomputer and its peripheral cell form, and
Micro processing module is equipped with multiple overvoltage/undervoltage preset value storage units, Phase sequence detection program, Voltage unbalance and detects program, phase
Loss detection storage unit and comparator, overvoltage/undervoltage preset value that the micro processing module is inputted according to key setup module,
Phase sequence detection, Voltage unbalance detection, phase loss detection selection instruction, control the more real-time three-phase mains voltage of comparator
It detects with corresponding overvoltage/undervoltage preset value, Phase sequence detection, Voltage unbalance, phase loss detection, and is controlled according to comparison result
Output driving amplification module, to control the output of relay execution module；
The relay execution module be used for the execution relay under the control of driving signal that micro processing module is sent break it is opening/closing
Conjunction movement.
2. a kind of threephase motor voltage monitor according to claim 1, it is characterised in that: the display module connection
Micro processing module, and include LCD display is used to show to include the line voltage value acquired in real time and selected excessively deficient
Preset value, Phase sequence detection, Voltage unbalance is pressed to detect, the malfunction of phase loss detection.
3. a kind of threephase motor voltage monitor according to claim 1 or 2, it is characterised in that: the output driving
Amplification module is also connected with voltage regulating module, and the output end of voltage regulating module connects motor, and voltage regulating module receives output driving amplification
The control signal of module output, to control the revolving speed of motor.
4. a kind of threephase motor voltage monitor according to claim 1 or 2, it is characterised in that: further include having input
Connection jaws, output connection mouth and contactor connection jaws, the input wires mouth, output connection mouth and contactor connection jaws are equal
It is provided with two kinds of interfaces of connector interface and inserted sheet interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920275081.4U CN209592965U (en) | 2019-03-05 | 2019-03-05 | A kind of threephase motor voltage monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920275081.4U CN209592965U (en) | 2019-03-05 | 2019-03-05 | A kind of threephase motor voltage monitor |
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| Publication Number | Publication Date |
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| CN209592965U true CN209592965U (en) | 2019-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920275081.4U Active CN209592965U (en) | 2019-03-05 | 2019-03-05 | A kind of threephase motor voltage monitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109861174A (en) * | 2019-03-05 | 2019-06-07 | 温州宝翔科技有限公司 | A kind of threephase motor voltage monitor |
-
2019
- 2019-03-05 CN CN201920275081.4U patent/CN209592965U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109861174A (en) * | 2019-03-05 | 2019-06-07 | 温州宝翔科技有限公司 | A kind of threephase motor voltage monitor |
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