CN201878085U - Broken wire detector for step motor - Google Patents
Broken wire detector for step motor Download PDFInfo
- Publication number
- CN201878085U CN201878085U CN2010205463011U CN201020546301U CN201878085U CN 201878085 U CN201878085 U CN 201878085U CN 2010205463011 U CN2010205463011 U CN 2010205463011U CN 201020546301 U CN201020546301 U CN 201020546301U CN 201878085 U CN201878085 U CN 201878085U
- Authority
- CN
- China
- Prior art keywords
- stepping motor
- control section
- port
- signal
- drive part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000001514 detection method Methods 0.000 claims abstract description 31
- 230000005611 electricity Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 1
Images
Landscapes
- Control Of Stepping Motors (AREA)
Abstract
The utility model discloses a step motor's broken string detection device, it includes control section and drive division, this drive division be equipped with the input port of receiving this control section input signal, with the connection port that the step motor electricity is connected, and with the detection port that is used for detecting signal output that this control section electricity is connected, this drive division detects this step motor's signal and feeds back to control section. When the feedback signal read by the detection port is at a high level, the judgment result is that no disconnection fault exists, and no alarm signal is output; when the feedback signals read by the detection port are all low level, the judgment result is a disconnection fault, and an alarm signal is output. When the stepping motor or the electronic expansion valve has a disconnection fault, the circuit does not output driving pulses any more, so that the reliability of the stepping motor or the electronic expansion valve is enhanced.
Description
Technical field
The utility model belongs to machine field, relates in particular to the broken thread detector of stepping motor.
Background technology
The stepping motor of prior art or coil of electronic expansion valve, circuit just applies driving pulse to coil of electronic expansion valve or stepping motor, but when there is disconnection fault in motor coil, circuit can not directly detect, just whether rotate failure judgement, judge to have hysteresis quality by exterior line temperature or observation motor.
The utility model content
The utility model provides a kind of broken thread detector of stepping motor, it can be when circuit applies driving pulse, detect stepping motor again and whether have disconnection fault, avoid when stepping motor breaks down, also apply driving pulse, guaranteeing the reliability of stepping motor or coil of electronic expansion valve.
The utility model is achieved in that
A kind of broken thread detector of stepping motor, it comprises control section and drive part, this drive part is provided with the input port that receives this control section input signal, the connectivity port that is electrically connected with stepping motor, reaches the detection port that is used for detection signal output that is electrically connected with this control section, and this drive part detects the signal of this stepping motor and feeds back to control section.The detection signal input port of control section links to each other with the detection signal output port of drive part, and when the feedback signal that control section detection signal inputting testing terminal reads was high level, judged result was no disconnection fault, not output alarm signal; When the feedback signal that detection port reads was low level, judged result was a disconnection fault, output alarm signal.When disconnection fault appearred in stepping motor or electric expansion valve, circuit was no longer exported driving pulse, had strengthened the reliability of stepping motor or electric expansion valve.
Preferably, this drive part is a CD4052 analog switch chip.
The broken thread detector of the utility model stepping motor, realized in to stepping motor and electric expansion valve driving process, can detecting whether there is disconnection fault automatically, when having avoided having fault, also apply driving pulse, guaranteed the reliability service of stepping motor and electric expansion valve.
Description of drawings
Fig. 1 is the block diagram of first embodiment of the broken thread detector of the utility model stepping motor;
Fig. 2 is the circuit diagram of embodiment one;
Fig. 3 is the block diagram of second embodiment of the broken thread detector of the utility model stepping motor;
Fig. 4 is the circuit diagram of embodiment two.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated:
As shown in Figures 1 and 2.The checkout gear of the utility model stepping motor, it can be applicable to stepping motor or contains the disconnection fault detection of the electric expansion valve of stepping motor.It has control section 1 and drive part 2, this drive part 2 is provided with the input port 11 that is used to receive this control section 1 input signal, the connectivity port 12 that is electrically connected with this stepping motor 3, reaches the detection port 13 that is used for detection signal output that is electrically connected with this control section 1, control section 1 controlling and driving part input port 11 output drive signals, control detection port one 3 receives the feedback signal of returning from stepping motor 3 simultaneously, and judges whether output alarm signal according to feedback signal.
Preferably, when the feedback signal that reads when detection port was high level, judged result was no disconnection fault, not output alarm signal; When the feedback signal that reads when detection port was low level, judged result was a disconnection fault, output alarm signal.
The rated voltage of the stepping motor of present embodiment and the rated voltage of this chip for driving are unequal.This drive part 2 is a CD4052 analog switch chip as shown in Figure 2, and present embodiment adopts 2 CD4052 analog switch chips, and it is connected with 2 input ports 11 of chip for driving respectively.When control channel was converted to 0, X0 and X, Y0 and Y connected, and input port 11 work apply driving pulse and drive this stepping motor 3; After a bit of time of input port work (for example 1 second), control channel is converted to 1, X3 and X, Y3 and Y connect, detection port 13 work, the level that reads feedback signal is to judge whether broken string, detection port 12 work one are minor time slice (for example 20ms) more, can not influence the operate as normal of stepping motor 3.If the feedback signal that 4 detection port 13 read all is a high level, then think fault-free; If the feedback signal that has 1 or 2-3 detection port 13 to read is a low level, then think to have disconnection fault, the control section output alarm signal, drive part stops output drive signal simultaneously.If stepping motor 3 no disconnection faults, then control channel continues to be converted to 0, and input port 11 applies driving pulse, proceeds the circulating working mode of input port 11 and detection port 13, guarantees that stepping motor 3 can effectively drive.
As shown in Figure 3, Figure 4.When specified equating of the rated voltage of this stepping motor and this chip for driving, the input port of drive part 2 and detection port are same port, do not need the analog switch chip, control section 1 can directly be exported driving pulse, and reads the feedback signal that feeds back to from stepping motor 3.
As shown in Figure 4, the following diagram of its circuit diagram, chip for driving 4 same port RA0, RA1, RA2, RA3 can drive stepping motor, can be used for the burn out detection to stepping motor again, drive with the detection substep to carry out.Its mode of operation is similar to embodiment one, after a bit of time of input port work (for example 1 second), and detection port work, the level that reads feedback signal to be judging whether broken string, and detection port work one minor time slice (for example 20ms) more.The alternation of input port and detection port can not influence the operate as normal of stepping motor, and has guaranteed the reliability of stepping motor.
Only be specific embodiment of the utility model below, do not limit protection range of the present utility model with this; Any replacement and the improvement done on the basis of not violating the utility model design all belong to protection range of the present utility model.
Claims (4)
1. the broken thread detector of a stepping motor, comprise control section and drive part, this drive part is provided with the input port that receives this control section input signal, and the connectivity port that is electrically connected with stepping motor, it is characterized in that, this drive part also comprises the detection port that is used for detection signal output that is electrically connected with this control section, and this drive part detects the signal of this stepping motor and feeds back to control section.
2. the broken thread detector of stepping motor as claimed in claim 1 is characterized in that, the detection signal input port of control section links to each other with the detection signal output port of drive part.
3. the broken thread detector of stepping motor as claimed in claim 1 or 2 is characterized in that, the rated voltage of this stepping motor and the rated voltage of this chip for driving are unequal.
4. the broken thread detector of stepping motor as claimed in claim 1 or 2 is characterized in that, this drive part is a CD4052 analog switch chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205463011U CN201878085U (en) | 2010-09-27 | 2010-09-27 | Broken wire detector for step motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205463011U CN201878085U (en) | 2010-09-27 | 2010-09-27 | Broken wire detector for step motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201878085U true CN201878085U (en) | 2011-06-22 |
Family
ID=44165993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205463011U Expired - Fee Related CN201878085U (en) | 2010-09-27 | 2010-09-27 | Broken wire detector for step motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201878085U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419406A (en) * | 2010-09-27 | 2012-04-18 | 珠海格力电器股份有限公司 | Broken wire detection device and broken wire detection method of stepping motor |
-
2010
- 2010-09-27 CN CN2010205463011U patent/CN201878085U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419406A (en) * | 2010-09-27 | 2012-04-18 | 珠海格力电器股份有限公司 | Broken wire detection device and broken wire detection method of stepping motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101937038B (en) | Intelligent multi-core cable harness detection device | |
| CN201548643U (en) | Load open circuit or short circuit detecting system for vehicle controller | |
| CN104333364A (en) | AC solid state relay and fault detecting method of load circuit of same | |
| CN102890235A (en) | Fault detection method and device | |
| CN204231318U (en) | A kind of ac solid relay | |
| CN207232324U (en) | A kind of fault diagnosis circuit of low side driving | |
| CN201928080U (en) | Power supply detecting and switching device | |
| CN110905733A (en) | Become oar cabinet test system | |
| CN103558541A (en) | Self-checking for safe output circuit | |
| CN101763097B (en) | Quality flow controller/ageing measurement monitoring system | |
| CN201878085U (en) | Broken wire detector for step motor | |
| CN112649726B (en) | Switch class mechanical life test circuit and method | |
| CN102419406A (en) | Broken wire detection device and broken wire detection method of stepping motor | |
| CN102508064A (en) | Electrical equipment fault diagnosis method, equipment, system and engineering machinery | |
| CN110376932B (en) | Functional safety switching value output module with high diagnosis coverage rate | |
| CN110444444A (en) | Drive the circuit of contactor | |
| CN201255763Y (en) | Electric bicycle failure automatic detection and display apparatus and electric bicycle | |
| CN103916070B (en) | Threephase asynchronous minimum power input energy saver and using method thereof | |
| CN109683508A (en) | A kind of band detects and the steering handwheel control system of the online self-test of BIT automatically | |
| CN210487920U (en) | Water pump PCBA's detection device that rolls off production line | |
| CN107834311A (en) | Network interface plug-in and pull-off device, network interface insert-pull detection system and method | |
| CN105425149B (en) | A kind of AC machine drive system detection device | |
| CN204065307U (en) | With the N channel field effect transistors type drive integrated circult of failure diagnosis device | |
| CN210835199U (en) | PT disconnection fault detection unit of automatic excitation device | |
| CN202383228U (en) | Intelligent combiner box testing system |
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: 20110622 Termination date: 20180927 |