CN220137355U - Position feedback loop broken line detection device - Google Patents
Position feedback loop broken line detection device Download PDFInfo
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- CN220137355U CN220137355U CN202321382105.9U CN202321382105U CN220137355U CN 220137355 U CN220137355 U CN 220137355U CN 202321382105 U CN202321382105 U CN 202321382105U CN 220137355 U CN220137355 U CN 220137355U
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- position feedback
- feedback loop
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- micro switch
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- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 238000012544 monitoring process Methods 0.000 claims abstract description 46
- 230000000007 visual effect Effects 0.000 claims abstract description 18
- 238000005070 sampling Methods 0.000 claims description 14
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- 238000010586 diagram Methods 0.000 description 2
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Abstract
The utility model provides a position feedback return circuit broken line detection device belongs to electric automatic control technical field for solve current position feedback return circuit and make the normally open contact that can make wherein lose logic protection function at the broken line, make the return result mistake, and lead to the problem of relevant equipment damage even casualties. The detection device comprises the voltage monitoring units connected in parallel with the two ends of the micro switch in the position feedback loop, and can monitor the potential difference of the two ends of the micro switch in real time, so that whether the position feedback loop is broken or not is determined, and further, when the voltage monitoring units are realized to comprise the voltage type audible and visual alarm, audible and visual alarm signals can be automatically sent out when the position feedback loop is broken, personnel are reminded of faults, equipment damage and casualties are avoided, and the electrical control safety is improved.
Description
Technical Field
The disclosure relates to the technical field of electric automatic control, in particular to a position feedback loop disconnection detection device.
Background
In existing electrical control, it is often necessary to collect the limit position information of the moving part through a position feedback loop to implement a logic protection function for the device. For reasons of electrical design and device model selection, normally open contacts may have to be used in the position feedback loop when acquiring the limit position information of the moving part through the position feedback loop. However, once the line where the normally open contact of the position feedback loop is located is broken, the related equipment can still act normally at this time, but in practice, the control logic of the position feedback loop cannot accurately detect the in-place condition of the moving part, and because the related equipment cannot know the fault of the position feedback loop, the related equipment is damaged and even casualties are easily caused.
Disclosure of Invention
One technical problem to be solved by the present disclosure is: the existing position feedback loop can lose the logic protection function of the normally open contact in the position feedback loop when the line is broken, so that the returned result is wrong, and the problem of damage to related equipment and even casualties is caused.
To solve the above technical problem, an embodiment of the present disclosure provides a position feedback loop disconnection detecting device for a position feedback loop with a micro switch, the device includes: and the voltage monitoring unit is connected with the micro switch in parallel.
In some embodiments, the first end of the micro switch is electrically connected to a first potential and the second end of the micro switch is electrically connected to a second potential through a relay.
In some embodiments, a first sampling end of the voltage monitoring unit is electrically connected to a first end of the micro switch, and a second sampling end of the voltage monitoring unit is electrically connected to a second end of the micro switch.
In some embodiments, the voltage monitoring unit includes: and the voltage type audible and visual alarm is used for alarming when the voltage is lost between the first end and the second end of the micro switch.
In some embodiments, the first power supply terminal of the voltage monitoring unit is electrically connected to a first potential, and the second power supply terminal of the voltage monitoring unit is electrically connected to a second potential.
In some embodiments, the voltage monitoring unit further comprises a battery, and the first power supply terminal and the second power supply terminal of the voltage monitoring unit are connected to an output terminal of the battery.
In some embodiments, the micro-switch includes an auxiliary contact composed of a third terminal and a fourth terminal, and the voltage monitoring unit further includes a first switching value logic input terminal and a second switching value logic input terminal, wherein the first switching value logic input terminal is electrically connected to the third terminal, and the second switching value logic input terminal is electrically connected to the fourth terminal.
Through above-mentioned technical scheme, the position feedback return circuit broken line detection device that this disclosure provided through the parallelly connected voltage monitoring unit in micro-gap switch's both ends, can monitor micro-gap switch's both ends potential difference in real time to whether the position feedback return circuit breaks wire is confirmed to accessible micro-gap switch's both ends potential difference, and further, when realizing voltage monitoring unit as including voltage type audible and visual alarm, can send audible and visual alarm signal voluntarily when the position feedback return circuit breaks wire, reminds personnel to have the trouble to take place, avoids equipment damage and casualties, improves electrical control security.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
Fig. 1 is a schematic circuit diagram of a position feedback loop wire breakage detection device according to an embodiment of the present disclosure.
Reference numerals illustrate:
k1, a micro switch; u1, a first potential; u2, a second potential; u4, a voltage monitoring unit; m1, a relay; g1, a first circuit; g2, a second line; g3, a third circuit;
1. a first sampling end; 2. a second sampling end; 3. a first power supply terminal; 4. a second power supply terminal; 5. a first switching value logic input terminal; 6. a second switching value logic input terminal;
13. a first end of the micro switch K1; 14. a second end of the microswitch K1; 15. a third end of the micro switch K1; 16. and a fourth terminal of the microswitch K1.
Detailed Description
Embodiments of the present disclosure are described in further detail below with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the disclosure and not to limit the scope of the disclosure, which may be embodied in many different forms and not limited to the specific embodiments disclosed herein, but rather to include all technical solutions falling within the scope of the claims.
The present disclosure provides these embodiments in order to make the present disclosure thorough and complete, and fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments should be construed as exemplary only and not limiting unless otherwise specifically stated.
In the description of the present disclosure, unless otherwise indicated, the meaning of "plurality" is greater than or equal to two; the terms "upper," "lower," "left," "right," "inner," "outer," and the like indicate an orientation or positional relationship merely for convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present disclosure. When the absolute position of the object to be described is changed, the relative positional relationship may be changed accordingly.
Furthermore, the use of the terms first, second, and the like in this disclosure do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The "vertical" is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error. The word "comprising" or "comprises" and the like means that elements preceding the word encompass the elements recited after the word, and not exclude the possibility of also encompassing other elements.
It should also be noted that, in the description of the present disclosure, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the present disclosure may be understood as appropriate by those of ordinary skill in the art. When a particular device is described as being located between a first device and a second device, there may or may not be an intervening device between the particular device and either the first device or the second device.
All terms used in the present disclosure have the same meaning as understood by one of ordinary skill in the art to which the present disclosure pertains, unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification.
Fig. 1 is a schematic circuit diagram of a position feedback loop disconnection detecting device according to an embodiment of the present disclosure, and as shown in fig. 1, the embodiment of the present disclosure provides a position feedback loop disconnection detecting device for a position feedback loop with a micro switch K1, the device includes: and the voltage monitoring unit U4 is connected with the micro switch K1 in parallel and is used for detecting the voltages at two ends of the micro switch K1 in real time. Therefore, the voltage monitoring units are connected in parallel at the two ends of the micro switch, so that the potential difference at the two ends of the micro switch can be monitored in real time, and whether the position feedback loop is good or not can be determined through the potential difference at the two ends of the micro switch.
In some embodiments, in the position feedback loop according to the embodiments of the present disclosure, the first end 13 of the micro switch K1 is electrically connected to the first potential U1, and the second end 14 of the micro switch K1 is electrically connected to the second potential U2 after passing through the relay M1. For example, the first potential U1 is at a high level, the second potential U2 is at a low level, the second end 14 of the micro switch K1 is connected to the second potential U2 through the relay M1, and the relay M1 can participate in logic control of the position feedback loop, and on the other hand, short circuit between the first potential U1 and the second potential U2 caused by closing of the micro switch K1 is avoided, so that power safety of the position feedback loop is improved.
In some embodiments, the first sampling terminal 1 of the voltage monitoring unit U4 is electrically connected to the first terminal 13 of the micro switch K1, and the second sampling terminal 2 of the voltage monitoring unit U4 is electrically connected to the second terminal 14 of the micro switch K1. In these embodiments, the voltage monitoring unit U4 may be conveniently connected in parallel with the micro switch K1 by providing the first sampling end 1 and the second sampling end 2, and is convenient to assemble and disassemble.
In some embodiments, the voltage monitoring unit U4 includes: the voltage type audible and visual alarm is used for performing audible and visual alarm when the voltage is lost between the first end 13 and the second end 14 of the micro switch K1. Under normal state, the first end 13 and the second end 14 of the micro switch K1 are provided with rated voltage of a circuit (namely, the voltage at the two ends of the micro switch K1 in a normally open state), and the first end 13 and the second end 14 are connected with voltage type audible and visual alarms in parallel, so that the voltage type audible and visual alarms can not send out audible and visual alarms due to the fact that the normal voltage of the micro switch K1 in the normally open state can be detected. However, once the first line G1 and/or the second line G2 and/or the third line G3 are disconnected, the micro switch K1 loses the logic protection function, and the voltage type audible and visual alarm also sends out an audible and visual alarm due to the fact that the first sampling end 1 and the second sampling end 2 lose the voltage. In these embodiments, when the voltage monitoring unit U4 includes a voltage type audible and visual alarm, an audible and visual alarm signal can be automatically sent out when the position feedback loop is disconnected, so that a person is reminded of faults, labor cost required for continuously checking the monitoring result of the voltage monitoring unit U4 is saved, automatic monitoring and alarm is realized, equipment damage and casualties are avoided, and electrical control safety is improved.
In some embodiments, the first power terminal 3 of the voltage monitoring unit U4 is electrically connected to the first potential U1, and the second power terminal 4 of the voltage monitoring unit U4 is electrically connected to the second potential U2. In the embodiments, the voltage type audible and visual alarm can be directly powered by a power supply of the position feedback loop, the wiring is simple, the volume of the voltage monitoring unit U4 can be reduced, and the device is convenient to miniaturize.
In some embodiments, the voltage monitoring unit U4 further includes a battery, and the first power terminal 3 and the second power terminal 4 of the voltage monitoring unit U4 are connected to output terminals of the battery. In these embodiments, the voltage monitoring unit U4 may select a device with a battery for supplying power independently according to an actual working condition, so as to avoid external wiring, and the device has improved applicability in situations where the device is convenient to move and has no external power source due to self-powered power.
Since the normal in-place operation of the micro switch K1 may cause detection interference to the voltage monitoring unit U4, in some embodiments, the micro switch K1 includes an auxiliary contact composed of a third terminal 15 and a fourth terminal 16, the voltage monitoring unit U4 further includes a first switching value logic input terminal 5 and a second switching value logic input terminal 6, the first switching value logic input terminal 5 is electrically connected to the third terminal 15, and the second switching value logic input terminal 6 is electrically connected to the fourth terminal 16. In these embodiments, the voltage monitoring unit U4 with logic judgment function is selected to shield the alarm interference of the normal in-place microswitch K1. The specific wiring principle is as follows: the first switching value logic input end 5 and the second switching value logic input end 6 of the voltage monitoring unit U4 are connected in parallel with a group of auxiliary contacts of the micro switch K1, and by setting parameters of the voltage monitoring unit U4 (or setting logic gate elements for performing logic judgment on the inputs of the first switching value logic input end 5 and the second switching value logic input end 6 in the voltage monitoring unit U4, etc.), logic judgment conditions for enabling the voltage monitoring unit U4 to perform output of the audible and visual alarm are as follows: the first switching value logic input terminal 5 and the second switching value logic input terminal 6 are disconnected in position, and the first sampling terminal 1 and the second sampling terminal 2 detect no voltage. Therefore, after the micro switch K1 is normally in place, even if the first end 13 and the second end 14 of the micro switch K1 lose voltage, the first switching value logic input end 5 and the second switching value logic input end 6 of the micro switch K1 are in the closed position, so that the output condition (alarm condition) of the voltage type audible and visual alarm can not be met, the alarm interference in normal place is shielded, the integral logic of the detection device is perfected, and the accuracy of the detection result of the device is improved.
Thus, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that the foregoing embodiments may be modified and equivalents substituted for elements thereof without departing from the scope and spirit of the disclosure. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict.
Claims (7)
1. A position feedback loop disconnection detection device for a position feedback loop with a microswitch (K1), characterized in that it comprises: and a voltage monitoring unit (U4) connected in parallel with the microswitch (K1).
2. The position feedback loop disconnection detection device according to claim 1, characterized in that a first end (13) of the micro switch (K1) is electrically connected to a first potential (U1), and a second end (14) of the micro switch (K1) is electrically connected to a second potential (U2) through a relay (M1).
3. The position feedback loop disconnection detection device according to claim 2, characterized in that a first sampling end (1) of the voltage monitoring unit (U4) is electrically connected to a first end (13) of the micro switch (K1), and a second sampling end (2) of the voltage monitoring unit (U4) is electrically connected to a second end (14) of the micro switch (K1).
4. A position feedback loop disconnection detection device according to claim 3, characterized in that the voltage monitoring unit (U4) comprises: and a voltage type audible and visual alarm for alarming when the voltage is lost between the first end (13) and the second end (14) of the micro switch (K1).
5. The position feedback loop disconnection detection device according to claim 4, characterized in that a first power supply terminal (3) of the voltage monitoring unit (U4) is electrically connected to the first potential (U1), and a second power supply terminal (4) of the voltage monitoring unit (U4) is electrically connected to the second potential (U2).
6. The position feedback loop disconnection detection device according to claim 4, wherein the voltage monitoring unit (U4) further comprises a battery, and the first power supply terminal (3) and the second power supply terminal (4) of the voltage monitoring unit (U4) are connected to output terminals of the battery.
7. The position feedback loop disconnection detection device according to any of the claims 3-6, characterized in that the micro switch (K1) comprises an auxiliary contact consisting of a third terminal (15) and a fourth terminal (16), the voltage monitoring unit (U4) further comprises a first switching value logic input (5) and a second switching value logic input (6), the first switching value logic input (5) being electrically connected to the third terminal (15), the second switching value logic input (6) being electrically connected to the fourth terminal (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321382105.9U CN220137355U (en) | 2023-06-01 | 2023-06-01 | Position feedback loop broken line detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321382105.9U CN220137355U (en) | 2023-06-01 | 2023-06-01 | Position feedback loop broken line detection device |
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| Publication Number | Publication Date |
|---|---|
| CN220137355U true CN220137355U (en) | 2023-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321382105.9U Active CN220137355U (en) | 2023-06-01 | 2023-06-01 | Position feedback loop broken line detection device |
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| CN (1) | CN220137355U (en) |
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- 2023-06-01 CN CN202321382105.9U patent/CN220137355U/en active Active
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Denomination of utility model: Position feedback loop disconnection detection device Granted publication date: 20231205 Pledgee: Hengshui Bank Co.,Ltd. Pledgor: Dongxu Pharmaceutical Glass (Beijing) Technology Co.,Ltd.|Beijing Yuanda Xinda Technology Co.,Ltd. Registration number: Y2024980031976 |