CN211878127U - Device for recording switch operation times - Google Patents
Device for recording switch operation times Download PDFInfo
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- CN211878127U CN211878127U CN201921416012.7U CN201921416012U CN211878127U CN 211878127 U CN211878127 U CN 211878127U CN 201921416012 U CN201921416012 U CN 201921416012U CN 211878127 U CN211878127 U CN 211878127U
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Abstract
The present disclosure relates to a device for recording the number of switch operations. The device includes: the inductive switch is used for sensing the action of the main contact of the target switch and carrying out on-off operation according to the sensed action of the main contact; and the control module is used for acquiring the on-off signal of the inductive switch and determining the use times of the target switch according to the on-off signal. By the technical scheme, the intelligent monitoring and accurate recording of the operation times of the target switch can be realized, the service condition information of the switch is provided for technical personnel, an accurate basis is provided for replacement before the switch fails, so that the technical personnel can take proper maintenance and treatment measures for the switch device in time, and the guarantee is provided for the safe and reliable operation of the power system.
Description
Technical Field
The present disclosure relates to the field of electronic technology, and in particular, to a device for recording the number of switch operations.
Background
The switching device plays an important role in protecting the whole power system as an important electronic device in the power system. The service life of the switching device has a certain relationship with the number of times it is used. The main contact in the switch can be worn in the action process, and the wear degree can influence the performance of the switch along with the increase of the use times. If the operation times of the switch are not recorded, the service condition of the switch cannot be known in time, whether a new switch device needs to be replaced or not cannot be accurately judged, and if the new switch device is not replaced in time, the safe operation of the power system can be seriously influenced.
SUMMERY OF THE UTILITY MODEL
The purpose of this disclosure is to provide a device for recording the number of switch operations, which can accurately record the number of switch operations.
In order to achieve the above object, the present disclosure provides an apparatus for recording the number of switch operations, the apparatus comprising:
the inductive switch is used for sensing the action of a main contact of the target switch and carrying out on-off operation according to the sensed action of the main contact;
and the control module is used for acquiring the on-off signal of the inductive switch and determining the use times of the target switch according to the on-off signal.
Optionally, the inductive switch is a proximity switch.
Optionally, the proximity switch is disposed in a closing direction of the main contact and is turned on when the main contact is closed.
Optionally, the inductive switch is a micro switch, and the micro switch is connected to the main contact and is turned on when the main contact is closed.
Optionally, the apparatus further comprises:
the electric signal detection module is used for detecting an electric signal in a main loop of the target switch;
the control module is further configured to determine the number of times of normal use and the number of times of abnormal use of the target switch according to the detection result of the electrical signal, wherein if it is determined that the electrical signal in the main loop of the target switch is smaller than a preset threshold when the main contact is disconnected according to the on-off signal of the inductive switch, it is determined that the target switch is in normal use, and if it is determined that the electrical signal in the main loop of the target switch is greater than or equal to the preset threshold when the main contact is disconnected according to the on-off signal of the inductive switch, it is determined that the target switch is in abnormal use.
Optionally, the electrical signal detection module comprises a current detection module for detecting a current in a main loop of the target switch; the preset threshold comprises a preset current threshold;
the control module is further configured to determine the number of normal use times and the number of abnormal use times of the target switch according to a current detection result of the current detection module, wherein if it is determined according to the on-off signal of the inductive switch that the current in the main loop of the target switch is smaller than the current threshold when the main contact is disconnected, it is determined that the target switch is in normal use, and if it is determined according to the on-off signal of the inductive switch that the current in the main loop of the target switch is greater than or equal to the current threshold when the main contact is disconnected, it is determined that the target switch is in abnormal use.
Optionally, the electrical signal detection module comprises a voltage detection module for detecting a voltage in a main loop of the target switch; the preset threshold comprises a preset voltage threshold;
the control module is further configured to determine the number of times of normal use and the number of times of abnormal use of the target switch according to a voltage detection result of the voltage detection module, wherein if it is determined that the voltage in the main circuit of the target switch is smaller than the voltage threshold when the main contact is disconnected according to the on-off signal of the inductive switch, it is determined that the target switch is in normal use, and if it is determined that the voltage in the main circuit of the target switch is greater than or equal to the voltage threshold when the main contact is disconnected according to the on-off signal of the inductive switch, it is determined that the target switch is in abnormal use.
Optionally, the electrical signal detection module includes a current detection module and a voltage detection module, the current detection module is configured to detect a current in a main loop of the target switch, and the voltage detection module is configured to detect a voltage in the main loop of the target switch; the preset threshold comprises a preset current threshold and a preset voltage threshold;
the control module is further configured to determine the number of times of normal use and the number of times of abnormal use of the target switch according to a current detection result of the current detection module and a voltage detection result of the voltage detection module, wherein if it is determined according to an on-off signal of the inductive switch that a current in a main loop of the target switch is smaller than the current threshold and a voltage in the main loop of the target switch is smaller than the voltage threshold when the main contact is turned off, it is determined that the target switch is in normal use, and if it is determined according to the on-off signal of the inductive switch that the current in the main loop of the target switch is greater than or equal to the current threshold or the voltage in the main loop of the target switch is greater than or equal to the voltage threshold when the main contact is turned off, it is determined that the target switch is in abnormal use.
Optionally, the current detection module comprises a current sensor and the voltage detection module comprises a voltage sensor.
Optionally, the apparatus further comprises:
and the display module is connected with the control module and used for displaying the using times of the target switch.
Through the technical scheme, the inductive switch can perform corresponding on-off operation according to the sensed action of the main contact, and then the control module determines the use times of the target switch according to the on-off signal of the inductive switch. Therefore, the intelligent monitoring and accurate recording of the operation times of the target switch can be realized, the service condition information of the switch is provided for technical personnel, accurate basis is provided for replacement before switch failure, the technical personnel can conveniently take proper maintenance and treatment measures for a switch device in time, and the guarantee is provided for safe and reliable operation of a power system.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a block diagram illustrating an apparatus for recording the number of switch operations according to an exemplary embodiment;
FIG. 2 is a schematic diagram of an apparatus for recording the number of switch operations shown in accordance with another exemplary embodiment;
FIG. 3 is a schematic diagram of an apparatus for recording the number of switch operations shown in accordance with another exemplary embodiment;
FIG. 4 is a schematic diagram of an apparatus for recording the number of switch operations shown in accordance with another exemplary embodiment;
fig. 5 is a flow chart illustrating a method of recording the number of switch operations according to an exemplary embodiment.
Description of the reference numerals
10 device 11 induction switch for recording switch operation times
12 control module 13 main contact
14 current detection module 15 voltage detection module
16 display module
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
Fig. 1 is a block diagram illustrating an apparatus 10 for recording the number of switching operations according to an exemplary embodiment. As shown in fig. 1, the apparatus 10 may include an inductive switch 11 and a control module 12.
The inductive switch 11 is used for sensing the motion of the main contact of the target switch, and performing on-off operation according to the sensed motion of the main contact.
The target switch can be a contactor, a disconnecting switch or a high-speed circuit breaker and other switching devices. The action of the main contact of the target switch may be, for example, closing or opening. When the main contact is closed, the switching circuit is conducted; when the main contacts are open, the switching circuit is open. The inductive switch 11 can sense the closing or opening action of the main contact of the target switch, and perform corresponding closing or opening operation according to the sensed action of the main contact.
The control module 12 is configured to obtain an on-off signal of the inductive switch 11, and determine the number of times of using the target switch according to the on-off signal.
The inductive switch 11 performs corresponding closing or opening operations according to the sensed motion of the main contact, so that the on-off signal of the inductive switch 11 can represent the on-off signal of the main contact, and the control module 12 can determine the number of times of using the target switch according to the on-off signal of the inductive switch 11.
For example, the control module 12 may process the on/off signal of the inductive switch 11 into a pulse signal and count the pulse signal to record the number of times of use of the target switch. Wherein, can gather inductive switch 11's close signal and record the operation number of times of target switch, also can gather inductive switch 11's break signal and record the operation number of times of target switch, perhaps, gather inductive switch 11's close and break signal simultaneously, when gathering simultaneously, gather once close signal and once break signal and show that target switch carries out an operation.
Through the technical scheme, the inductive switch can perform corresponding on-off operation according to the sensed action of the main contact, and then the control module determines the use times of the target switch according to the on-off signal of the inductive switch. Therefore, the intelligent monitoring and accurate recording of the operation times of the target switch can be realized, the service condition information of the switch is provided for technical personnel, accurate basis is provided for replacement before the switch fails, the technical personnel can conveniently take appropriate maintenance treatment measures for the switch device in time, and the guarantee is provided for the safe and reliable operation of the power system.
In one embodiment, the inductive switch 11 may be a proximity switch.
The proximity switch is also called a contactless switch, and the proximity switch is not required to be in direct contact with an object, and the switch is controlled to be switched on or switched off by utilizing the sensitivity of the displacement sensor to the proximity object. The displacement sensor has sensing capability to an object approaching it, and when the object moves towards the proximity switch and approaches a certain distance, the proximity switch is turned on.
The proximity switch may be, for example, a capacitive proximity switch, an electro-optical proximity switch, or other types of proximity switches, as the present disclosure does not limit thereto.
Alternatively, the proximity switch may be disposed in a closing direction of the main contact and be turned on when the main contact is closed.
Fig. 2 is a schematic diagram illustrating an apparatus for recording the number of switch operations according to another exemplary embodiment. As shown in fig. 2, the proximity switch is disposed in a closing direction of the main contact 13, when the main contact 13 is closed, the main contact 13 approaches the proximity switch, a distance from the proximity switch is reduced, and when the proximity switch senses a closing action of the main contact 13, the proximity switch performs a closing operation accordingly and is turned on. When the main contact 13 is opened, the main contact 13 moves in a direction away from the proximity switch, and the proximity switch senses the opening operation of the main contact 13 and accordingly opens.
Therefore, the action of the main contact of the target switch is sensed by the proximity switch, and corresponding opening or closing operation is executed according to the sensed action of the main contact. Therefore, the on-off signal of the main contact is represented by the on-off signal of the proximity switch, the control module can record the use times of the target switch according to the on-off signal of the proximity switch, and the operation times of the switch can be accurately and effectively recorded.
In another embodiment, the inductive switch 11 may be a micro switch, which is connected to the main contacts and conducts when the main contacts are closed.
The micro switch is also called sensitive switch, and has micro contact interval and fast action mechanism, small contact interval, short action stroke and fast on-off. Fig. 3 is a schematic diagram illustrating an apparatus for recording the number of switch operations according to another exemplary embodiment. As shown in fig. 3, a microswitch is arranged in the auxiliary circuit of the switching device and is connected to the main contact 13. The micro switch can synchronously execute the closing or opening action along with the main contact 13, and when the main contact 13 is closed, the micro switch is closed at the same time so as to be conducted; when the main contacts 13 are open, the micro-switches are simultaneously open.
Therefore, the action of the main contact is represented by the on-off signal of the micro switch, and the control module can record the use times of the target switch according to the on-off signal of the micro switch. Therefore, the operation times of the switch can be accurately and effectively recorded.
The inventor finds that in the practical use process, the switching device may be abnormally disconnected due to the fault of the power system, and if the switching device is abnormally disconnected, the working condition of the main contact in abnormal disconnection cannot be directly judged only according to the operation times, so that the fault analysis is not facilitated. For this purpose, optionally, the device for recording the number of switch operations may further include:
the electric signal detection module is used for detecting an electric signal in a main loop of the target switch;
the control module 12 is further configured to determine the number of times of normal use and the number of times of abnormal use of the target switch according to the detection result of the electrical signal.
Specifically, if it is determined that the electrical signal in the main loop of the target switch is smaller than the preset threshold when the main contact is disconnected according to the on-off signal of the inductive switch 11, it may be determined that the target switch is normally used, and if it is determined that the electrical signal in the main loop of the target switch is greater than or equal to the preset threshold when the main contact is disconnected according to the on-off signal of the inductive switch 11, it may be determined that the target switch is abnormally used. Wherein the preset threshold value may be preset according to an operation characteristic of the power system.
In one embodiment, the electrical signal detection module may include, for example, a current detection module for detecting a current in the primary loop of the target switch, which may be, for example, a current sensor. Wherein the preset threshold may comprise a preset current threshold.
The control module 12 is further configured to determine the number of normal uses and the number of abnormal uses of the target switch according to the current detection result of the current detection module. Specifically, if the control module 12 determines that the current in the main loop of the target switch is smaller than the preset current threshold when the main contact is disconnected according to the on-off signal of the inductive switch, it may be determined that the target switch is normally used; if the control module 12 determines that the current in the main loop of the target switch is greater than or equal to the preset current threshold when the main contact is disconnected according to the on-off signal of the inductive switch, it may be determined that the target switch is in abnormal use.
In another embodiment, the electrical signal detection module may include, for example, a voltage detection module for detecting a voltage in the main loop of the target switch, and the voltage detection module may be, for example, a voltage sensor. The preset threshold may include a preset voltage threshold.
The control module 12 is further configured to determine the number of times of normal use and the number of times of abnormal use of the target switch according to the voltage detection result of the voltage detection module. Specifically, if the control module 12 determines that the voltage in the main loop of the target switch is less than the preset voltage threshold when the main contact is disconnected according to the on-off signal of the inductive switch, it may be determined that the target switch is normally used; if the control module 12 determines that the voltage in the main loop of the target switch is greater than or equal to the preset voltage threshold when the main contact is disconnected according to the on-off signal of the inductive switch, it may be determined that the target switch is in abnormal use.
In another embodiment, the electrical signal detection module may include both the current detection module and the voltage detection module. The preset threshold may include a preset current threshold and a preset voltage threshold.
Fig. 4 is a schematic diagram illustrating an apparatus for recording the number of switch operations according to another exemplary embodiment. As shown in fig. 4, the inductive switch 11 is, for example, a proximity switch, and the electric signal detection module includes a current detection module 14 and a voltage detection module 15, which can simultaneously detect a current value and a voltage value in a main loop of the target switch. The current detection module 14 may be a current sensor, for example, and the voltage detection module 15 may be a voltage sensor, for example. For example, if the control module 12 determines that the current value detected by the current detection module 14 is smaller than the preset current threshold value and the voltage value detected by the voltage detection module 15 is smaller than the preset voltage threshold value when the main contact 13 is opened according to the on-off signal of the proximity switch, the target switch may be determined to be normally used. If the control module 12 determines that the current value detected by the current detection module 14 is greater than or equal to the preset current threshold value or the voltage value detected by the voltage detection module 15 is greater than or equal to the preset voltage threshold value when the main contact 13 is opened according to the on-off signal of the proximity switch, it may be determined that the target switch is abnormally used.
During normal disconnection operation, a technician firstly reduces the load in the power system, and then disconnects the target switch after reducing the load to a certain threshold value, so as to prevent the main contact from generating impact current in the disconnection process to damage the contact. Thus, if the current in the main circuit of the target switch when the main contacts are open is less than the corresponding preset current threshold and the voltage is less than the preset voltage threshold, normal use is indicated.
When the switching device is abnormally disconnected due to a fault in the power system, a rush current may be generated at the moment of the abnormal disconnection, and thus, if the current in the main circuit of the target switch is greater than or equal to a corresponding preset current threshold value or the voltage is greater than or equal to a preset voltage threshold value when the main contacts are disconnected, it is indicated as abnormal use. If the main contact is abnormally disconnected, electric arcs are generated in the breaking process of the main contact, the electric arcs have certain corrosion effects on the contacts, the larger the impact current is, the more serious the electric arc phenomenon is, and the more serious the corrosion on the contacts is.
The electric signal detection module in the device can detect the electric signal when the main contact is disconnected, and sample and record the electric signal when the main contact is disconnected, and the control module 12 can timely judge the working condition when the main contact is abnormally disconnected and the condition of the power system according to the electric signal detection result, such as the current value and the voltage value in the main loop when the main contact is disconnected. In addition, the number of normal use times and the number of abnormal use times may be separately accumulated. The electric signals in the using process of the switch are recorded and analyzed, so that the operation times under different working states are accumulated, and the use condition of the switch device is accurately known.
Through the scheme, the electric signal detection module monitors the electric signal in the main loop of the target switch in real time, so that the normal use times and the abnormal use times of the switch can be accurately distinguished, the working condition of the switch device during abnormal disconnection is judged, the fault analysis by a technician is facilitated, and the use condition of the switch is more accurately judged.
Optionally, as shown in fig. 4, the apparatus may further include:
and the display module 14 is connected with the control module 12 and is used for displaying the use times of the target switch.
The display module 14 may be, for example, an LED display screen. The number of times of use of the target switch is displayed through the display device 14, wherein the number of times of normal use and the number of times of abnormal use can be respectively displayed, so that technicians can visually see the number of times of use of the target switch, and then know the use condition of the target switch in time, and therefore appropriate maintenance treatment measures can be conveniently taken for the target switch.
Optionally, the apparatus 10 may further include a reset module that may perform a reset operation after a new switching device is replaced. After the reset operation is performed, the operation frequency recorded in the device before is cleared, and the operation frequency of the target switch is recorded again.
The present disclosure also provides a method of recording the number of switching operations, and fig. 5 is a flowchart illustrating a method of recording the number of switching operations according to an exemplary embodiment, and as shown in fig. 5, the method may include:
in S11, an on/off signal of the inductive switch is acquired.
The inductive switch is used for sensing the action of the main contact of the target switch and conducting on-off operation according to the sensed action of the main contact.
In S12, the number of times of use of the target switch is determined based on the on/off signal.
By the technical scheme, the intelligent monitoring and accurate recording of the operation times of the target switch can be realized, the service condition information of the switch is provided for technical personnel, an accurate basis is provided for replacement before the switch fails, so that the technical personnel can take proper maintenance and treatment measures for the switch device in time, and the guarantee is provided for the safe and reliable operation of the power system.
Optionally, the inductive switch is a proximity switch, and the proximity switch is disposed in a closing direction of the main contact and is turned on when the main contact is closed.
Optionally, the inductive switch is a micro switch, and the micro switch is connected to the main contact and is turned on when the main contact is closed.
Optionally, the method further comprises:
acquiring an electric signal in a main loop of the target switch;
and determining the normal use times and the abnormal use times of the target switch according to the electric signals in the main loop, wherein if the electric signals in the main loop of the target switch are smaller than a preset threshold value when the main contact is determined to be disconnected according to the on-off signals, the target switch is determined to be normally used, and if the electric signals in the main loop of the target switch are greater than or equal to the preset threshold value when the main contact is determined to be disconnected according to the on-off signals, the target switch is determined to be abnormally used.
With regard to the method in the above-described embodiment, the specific manner in which the respective steps perform operations has been described in detail in the embodiment related to the apparatus, and will not be elaborated upon here.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. An apparatus for recording the number of switch operations, the apparatus comprising:
the inductive switch is used for sensing the action of a main contact of the target switch and carrying out on-off operation according to the sensed action of the main contact;
and the control module is used for acquiring the on-off signal of the inductive switch and determining the use times of the target switch according to the on-off signal.
2. The device of claim 1, wherein the inductive switch is a proximity switch.
3. The device of claim 2, wherein the proximity switch is disposed in a closing direction of the main contact and conducts when the main contact is closed.
4. The device of claim 1, wherein the inductive switch is a micro switch, the micro switch being connected to the main contact and conducting when the main contact is closed.
5. The apparatus of claim 1, further comprising:
the electric signal detection module is connected with the control module and used for detecting the electric signal in the main loop of the target switch and sending the detected electric signal in the main loop of the target switch to the control module;
the control module is further used for determining the number of normal use times and the number of abnormal use times of the target switch according to the electric signal detection result, wherein if the electric signal in the main loop of the target switch is smaller than a preset threshold when the main contact is determined to be disconnected according to the on-off signal of the induction switch, the target switch is determined to be in normal use, and if the electric signal in the main loop of the target switch is greater than or equal to the preset threshold when the main contact is determined to be disconnected according to the on-off signal of the induction switch, the target switch is determined to be in abnormal use.
6. The device of claim 5, wherein the electrical signal detection module comprises a current detection module, and the current detection module is connected with the control module and is used for detecting the current in the main loop of the target switch and sending the detected current in the main loop of the target switch to the control module; the preset threshold comprises a preset current threshold;
the control module is further configured to determine the number of normal use times and the number of abnormal use times of the target switch according to a current detection result of the current detection module, wherein if it is determined according to the on-off signal of the inductive switch that the current in the main loop of the target switch is smaller than the current threshold when the main contact is disconnected, it is determined that the target switch is in normal use, and if it is determined according to the on-off signal of the inductive switch that the current in the main loop of the target switch is greater than or equal to the current threshold when the main contact is disconnected, it is determined that the target switch is in abnormal use.
7. The device of claim 5, wherein the electrical signal detection module comprises a voltage detection module, and the voltage detection module is connected to the control module and configured to detect a voltage in the main loop of the target switch and send the detected voltage in the main loop of the target switch to the control module; the preset threshold comprises a preset voltage threshold;
the control module is further configured to determine the number of times of normal use and the number of times of abnormal use of the target switch according to a voltage detection result of the voltage detection module, wherein if it is determined that the voltage in the main circuit of the target switch is smaller than the voltage threshold when the main contact is disconnected according to the on-off signal of the inductive switch, it is determined that the target switch is in normal use, and if it is determined that the voltage in the main circuit of the target switch is greater than or equal to the voltage threshold when the main contact is disconnected according to the on-off signal of the inductive switch, it is determined that the target switch is in abnormal use.
8. The device according to claim 5, wherein the electrical signal detection module comprises a current detection module and a voltage detection module, the current detection module is connected with the control module and is used for detecting the current in the main loop of the target switch and sending the detected current in the main loop of the target switch to the control module, and the voltage detection module is connected with the control module and is used for detecting the voltage in the main loop of the target switch and sending the detected voltage in the main loop of the target switch to the control module; the preset threshold comprises a preset current threshold and a preset voltage threshold;
the control module is further configured to determine the number of times of normal use and the number of times of abnormal use of the target switch according to a current detection result of the current detection module and a voltage detection result of the voltage detection module, wherein if it is determined according to an on-off signal of the inductive switch that a current in a main loop of the target switch is smaller than the current threshold and a voltage in the main loop of the target switch is smaller than the voltage threshold when the main contact is turned off, it is determined that the target switch is in normal use, and if it is determined according to the on-off signal of the inductive switch that the current in the main loop of the target switch is greater than or equal to the current threshold or the voltage in the main loop of the target switch is greater than or equal to the voltage threshold when the main contact is turned off, it is determined that the target switch is in abnormal use.
9. The apparatus of claim 8, wherein the current detection module comprises a current sensor and the voltage detection module comprises a voltage sensor.
10. The apparatus of claim 1, further comprising:
and the display module is connected with the control module and used for displaying the using times of the target switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921416012.7U CN211878127U (en) | 2019-08-28 | 2019-08-28 | Device for recording switch operation times |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921416012.7U CN211878127U (en) | 2019-08-28 | 2019-08-28 | Device for recording switch operation times |
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| CN211878127U true CN211878127U (en) | 2020-11-06 |
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