CN113448313B - Switch system with detection function and detection method - Google Patents
Switch system with detection function and detection method Download PDFInfo
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- CN113448313B CN113448313B CN202110698775.0A CN202110698775A CN113448313B CN 113448313 B CN113448313 B CN 113448313B CN 202110698775 A CN202110698775 A CN 202110698775A CN 113448313 B CN113448313 B CN 113448313B
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- 238000001514 detection method Methods 0.000 title claims abstract description 35
- 238000005070 sampling Methods 0.000 claims abstract description 60
- 238000004891 communication Methods 0.000 claims abstract description 24
- 238000012545 processing Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 12
- 101100493897 Arabidopsis thaliana BGLU30 gene Proteins 0.000 claims description 3
- 101100422614 Arabidopsis thaliana STR15 gene Proteins 0.000 claims description 3
- 101100141327 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) RNR3 gene Proteins 0.000 claims description 3
- 101150112501 din1 gene Proteins 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000010485 coping Effects 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0221—Preprocessing measurements, e.g. data collection rate adjustment; Standardization of measurements; Time series or signal analysis, e.g. frequency analysis or wavelets; Trustworthiness of measurements; Indexes therefor; Measurements using easily measured parameters to estimate parameters difficult to measure; Virtual sensor creation; De-noising; Sensor fusion; Unconventional preprocessing inherently present in specific fault detection methods like PCA-based methods
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Abstract
The invention discloses a switch system with detection and a detection method, comprising a plurality of intelligent switches which are connected in parallel in sequence, wherein the intelligent switches are connected with a control panel. The method comprises the steps that a sampling circuit 1 and a sampling circuit 2 respectively collect voltage signals at two end points of a contact; transmitting the collected voltage signals to a CPU; the CPU judges the current switch state according to the sampling circuit 1 and the sampling circuit 2; sending the judgment information to a control main board for display and processing; and if communication between the CPU and the main board control board is lost, performing indirect judgment. According to the technical scheme, the condition judgment of the system operation is realized by matching the acquired data of the two groups of sampling circuits with the comparison judgment of the CPU (Central processing Unit), and the acquired data is transmitted to the control panel to display the corresponding state so as to realize timely coping of maintenance personnel, thereby realizing the monitoring of a plurality of safety switches in the switch system by the intelligent switches connected in parallel, greatly simplifying the circuit and reducing the cost of the switch system.
Description
Technical Field
The invention relates to the technical field of electrical control detection, in particular to a switch system with detection and a detection method.
Background
In the elevator and escalator control system, a plurality of switches are connected in series in a safety loop, when one of the switches acts, the whole safety loop is disconnected, the fault of the whole loop is required to be checked, and the fault searching is complicated; when the conventional design needs to independently monitor the action state of each safety switch, each safety switch needs to be independently led to the control main board, the more the switches are, the more cables are arranged, and the more input ports are needed for the control main board, or an expansion circuit board is added, so that the system is complex and the cost is high. The more cables inside the equipment are, the more attractive the appearance is, and the greater the potential safety hazard caused by cable breakage is. The machine can generate vibration in the running process, the vibration often causes the instantaneous action of the switch, and because the time of the instantaneous action is relatively short, the electric signal is easy to have interference signals, the control main board is easy to report by mistake, and the guiding error is caused to maintenance.
Chinese patent document CN110602457a discloses a "detection method, device and system of elevator switch". The cloud server is used for sending a detection task to the detection base station, the detection base station specifies a detection plan based on the detection task and the current position of the car and sends the detection plan to the unmanned aerial vehicle, the unmanned aerial vehicle pushes the roller of the target switch to move a preset distance according to a preset direction based on the detection plan and records first clock information at the moment, the unmanned aerial vehicle sends the first clock information to the detection base station, the cloud server receives the first clock information forwarded by the detection base station, and the working state of the target switch is determined according to the first clock information and the action information of the target switch sent by the elevator controller. The technical scheme is complicated in fault searching, and the requirement on detecting lines is complex.
Disclosure of Invention
The invention mainly solves the technical problems of complicated fault finding and complicated circuit of the original technical scheme, and provides the switch system with detection and the detection method.
The technical problems of the invention are mainly solved by the following technical proposal:
a self-contained detection switching system comprising:
the intelligent switches are used for realizing the collection and state judgment of the safety switch information, and a plurality of intelligent switches are connected in parallel;
and the control main board is used for realizing information summarizing and control of the intelligent switches and is connected with the intelligent switches. The staff detects each intelligent switch state through control panel and carries out corresponding processing and ensures that the switch system operates smoothly.
Preferably, the intelligent switch comprises an action rod, contacts, an intelligent module and a shell, wherein two ends of the contacts are arranged on two sides of the action rod, the two ends of the contacts are connected with the intelligent module, and the action rod, the contacts and the intelligent module are arranged inside the shell. The action bars are provided with contacts for being connected with the contacts, and the intelligent module is used for collecting information and judging the switch state.
Preferably, the action bar comprises a pressing bar vertically penetrating out of the top of the shell and a horizontally arranged contact bar, contacts are arranged at two ends of the contact bar, and a spring is arranged at the part of the pressing bar located inside the shell. The control of being connected and breaking off between contact bar and the contact is realized through pressing the push rod that vertically wears out the shell top to the staff, and the spring realizes the resilience disconnection under the outage out of control state, ensures outage safety.
Preferably, the intelligent module comprises a CPU, and a sampling circuit 1, a sampling circuit 2, a communication module and a power module which are respectively connected with the CPU, wherein the sampling circuit 1 is connected with a first end point of a contact, the sampling circuit 2 is connected with a second end point of the contact, the communication module is connected with a control main board, and the power module is respectively connected with the control main board and the contact. The power module obtains power from the contact and provides power for the CPU and the communication module; the sampling circuit collects signals of the contacts and provides the signals for the CPU; the CPU has a function of defining switch codes, can code each switch, and judges the switch state of the state acquired by the sampling circuit; the communication module has an information sending function and sends the switch code and the CPU judgment result to the main board.
Preferably, the sampling circuit 1 includes an operational amplifier 1, the homodromous input end of the operational amplifier 1 is connected with the first end point of the contact, and is grounded through a resistor R1 and a capacitor C1 which are connected in parallel, the output end of the operational amplifier 1 is connected with the DIN1 end of the CPU through a resistor R2, the output end of the operational amplifier 1 is connected with the power supply end through the anode of a diode D1, and is grounded through the cathode of a diode D2, and the diode D2 is connected with the capacitor C2 in parallel.
Preferably, the sampling circuit 2 includes an operational amplifier 2, the homodromous input end of the operational amplifier 2 is connected with the second end point of the contact, and is grounded through a resistor R3 and a capacitor C3 which are connected in parallel, the output end of the operational amplifier 2 is connected with the DIN2 end of the CPU through a resistor R4, the output end of the operational amplifier 2 is connected with the power supply end through the anode of a diode D3, and is grounded through the cathode of a diode D4, and the diode D3 is connected with the capacitor C4 in parallel.
A detection method of a switch system with detection comprises the following steps:
s1, a sampling circuit 1 and a sampling circuit 2 respectively acquire voltage signals at two end points of a contact;
s2, transmitting the collected voltage signals to a CPU;
s3, the CPU judges the current switch state according to the sampling circuit 1 and the sampling circuit 2;
s4, sending the judgment information to a control main board for display and processing;
and S5, if communication between the CPU and the main board control board is lost, performing indirect judgment.
Preferably, the step S3 of judging the switch state specifically includes: if the sampling circuit 1 has voltage, the sampling circuit 2 judges that the switch operates and the contact is opened when no voltage exists; if the sampling circuit 1 has voltage and the sampling circuit 2 also has voltage, judging that the switch does not act and the contact is closed; if both the sampling circuit voltage value and the sampling circuit 2 have voltages and the voltage value deviation is large, the switch contact resistance is determined to be large, and the contacts are oxidized.
Preferably, the step S5 of indirectly determining specifically includes: when the last switch action is disconnected in the series loop, the contact terminal 1 has no voltage, the power supply module has no power supply, the communication between the CPU and the main board control board is lost, or the communication between the CPU and the main board control board is lost due to the failure of the switch, and the control main board judges whether the switch is lost or the communication is lost due to the other switch actions by collecting the states of other switches in the series loop.
The beneficial effects of the invention are as follows: the two groups of sampling circuits are used for acquiring data and matching with the CPU to compare and judge the acquired data so as to judge the running condition of the system, and then the acquired data is transmitted to the control panel to display the corresponding state so as to realize timely coping of maintenance personnel, thereby realizing monitoring of a plurality of safety switches in the switch system by the intelligent switches connected in parallel, greatly simplifying the circuit and reducing the cost of the switch system.
Drawings
Fig. 1 is a block diagram of a switching system of the present invention.
Fig. 2 is a schematic circuit diagram of the present invention.
Fig. 3 is a block diagram of an intelligent switch of the present invention.
In the figure, an action rod 1, a contact 2, an intelligent module 3 and a shell 4 are arranged.
Detailed Description
The technical scheme of the invention is further specifically described below through examples and with reference to the accompanying drawings.
Examples: the switch system with detection and the detection method thereof in this embodiment are shown in fig. 1, and include a plurality of intelligent switches connected in parallel in sequence, wherein the plurality of intelligent switches are connected with a control panel, the intelligent switches are used for realizing the collection and the state judgment of the safety switch information, and the control main board is used for realizing the information collection and the control of the plurality of intelligent switches. The staff detects each intelligent switch state through control panel and carries out corresponding processing and ensures that the switch system operates smoothly.
As shown in fig. 3, the intelligent switch comprises an action rod 1, contacts 2, an intelligent module 3 and a shell 4, wherein the action rod 1 comprises a pressing rod vertically penetrating out of the top of the shell 4 and a horizontally arranged contact rod, contacts are arranged at two ends of the contact rod, and a spring is arranged at the part of the pressing rod located inside the shell. The control of being connected and breaking off between contact bar and the contact is realized through pressing the push rod that vertically wears out the shell top to the staff, and the spring realizes the resilience disconnection under the outage out of control state, ensures outage safety. Two ends of the contact 2 are arranged on two sides of the action rod 1, the two ends of the contact 2 are connected with the intelligent module 3, and the action rod 1, the contact 2 and the intelligent module 3 are arranged inside the shell 4. The action bars are provided with contacts for being connected with the contacts, and the intelligent module is used for collecting information and judging the switch state.
As shown in fig. 2, the intelligent module 3 includes a CPU, and a sampling circuit 1, a sampling circuit 2, a communication module, and a power module, which are respectively connected with the CPU, where the sampling circuit 1 is connected with a first end of the contact 2, the sampling circuit 2 is connected with a second end of the contact 2, the communication module is connected with a control main board, and the power module is respectively connected with the control main board and the contact 2. The sampling circuit 1 and the sampling circuit 2 are respectively used for realizing voltage signal acquisition on two end points of the contact 2, and the power supply module acquires power from the contact and provides power for the CPU and the communication module; the sampling circuit collects signals of the contacts and provides the signals for the CPU; the CPU has a function of defining switch codes, can code each switch, and judges the switch state of the state acquired by the sampling circuit; the communication module has an information sending function and sends the switch code and the CPU judgment result to the main board.
The sampling circuit 1 comprises an operational amplifier 1, wherein the homodromous input end of the operational amplifier 1 is connected with the first end point of the contact 2, and is grounded through a resistor R1 and a capacitor C1 which are connected in parallel, the output end of the operational amplifier 1 is connected with the DIN1 end of the CPU through a resistor R2, the output end of the operational amplifier 1 is connected with the power supply end through the anode of a diode D1, the cathode of the diode D2 is grounded, and the diode D2 is connected with the capacitor C2 in parallel. The sampling circuit 2 comprises an operational amplifier 2, wherein the homodromous input end of the operational amplifier 2 is connected with the second endpoint of the contact 2, and is grounded through a resistor R3 and a capacitor C3 which are connected in parallel, the output end of the operational amplifier 2 is connected with the DIN2 end of the CPU through a resistor R4, the output end of the operational amplifier 2 is connected with the power supply end through the anode of a diode D3, the cathode of the diode D4 is grounded, and the diode D3 is connected with the capacitor C4 in parallel.
A detection method of a switch system with detection comprises the following steps:
s1, a sampling circuit 1 and a sampling circuit 2 respectively acquire voltage signals at two end points of a contact 2;
s2, transmitting the collected voltage signals to a CPU;
s3, the CPU judges the current switch state according to the sampling circuit 1 and the sampling circuit 2, and the switch state judgment specifically comprises the following steps: if the sampling circuit 1 has voltage, the sampling circuit 2 judges that the switch operates and the contact is opened when no voltage exists; if the sampling circuit 1 has voltage and the sampling circuit 2 also has voltage, judging that the switch does not act and the contact is closed; if both the sampling circuit voltage value and the sampling circuit 2 have voltages and the voltage value deviation is large, the switch contact resistance is determined to be large, and the contacts are oxidized.
S4, sending the judgment information to a control main board for display and processing;
s5, if communication between the CPU and the main board control board is lost, indirect judgment is carried out, wherein the indirect judgment specifically comprises the following steps: when the last switch action is disconnected in the series loop, the contact terminal 1 has no voltage, the power supply module has no power supply, the communication between the CPU and the main board control board is lost, or the communication between the CPU and the main board control board is lost due to the failure of the switch, and the control main board judges whether the switch is lost or the communication is lost due to the other switch actions by collecting the states of other switches in the series loop. If other switches in the series circuit work normally, the fault of the switch is indicated, and communication between the CPU and the main board control board is lost.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although the terms smart switch, control panel, etc. are used more herein, the possibility of using other terms is not precluded. These terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention.
Claims (6)
1. A method of detecting a self-contained switching system, comprising the steps of:
s1, a sampling circuit 1 and a sampling circuit 2 respectively acquire voltage signals at two end points of a contact (2);
s2, transmitting the collected voltage signals to a CPU;
s3, judging the current switch state by the CPU according to the sampling circuit 1 and the sampling circuit 2, wherein the step S3 of judging the switch state specifically comprises the following steps: if the sampling circuit 1 has voltage, the sampling circuit 2 judges that the switch operates and the contact is opened when no voltage exists; if the sampling circuit 1 has voltage and the sampling circuit 2 also has voltage, judging that the switch does not act and the contact is closed; if the voltage value of the sampling circuit and the voltage value of the sampling circuit 2 have voltages and the voltage value deviation is large, judging that the contact resistance of the switch is large and the contact is oxidized;
s4, sending the judgment information to a control main board for display and processing;
s5, if communication between the CPU and the main board control board is lost, indirect judgment is carried out, and the step S5 of indirect judgment specifically comprises the following steps: when the last switch action is disconnected in the series loop, the contact terminal 1 has no voltage, the power module has no power, the communication between the CPU and the main board control board is lost, or the communication between the CPU and the main board control board is lost due to the failure of the switch, and the control main board judges whether the switch is lost or the communication is lost due to the other switch actions by collecting the states of other switches in the series loop;
a switch system with self-contained detection comprising:
the intelligent switches are used for realizing the collection and state judgment of the safety switch information, and a plurality of intelligent switches are connected in parallel;
the control main board is used for realizing information summarizing and control of a plurality of intelligent switches and is connected with the plurality of intelligent switches;
2. the detection method of the switch system with detection according to claim 1, wherein the intelligent switch comprises an action bar (1), contacts (2), an intelligent module (3) and a shell (4), two end points of the contacts (2) are arranged on two sides of the action bar (1), the two end points of the contacts (2) are connected with the intelligent module (3), and the action bar (1), the contacts (2) and the intelligent module (3) are arranged inside the shell (4).
3. The detection method of the switch system with detection according to claim 2, wherein the action bar (1) comprises a pressing bar vertically penetrating out of the top of the housing (4) and a horizontally arranged contact bar, contacts are arranged at two ends of the contact bar, and a spring is arranged at the part of the pressing bar located inside the housing.
4. The detection method of the switch system with detection according to claim 2, wherein the intelligent module (3) comprises a CPU, and a sampling circuit 1, a sampling circuit 2, a communication module and a power module which are respectively connected with the CPU, wherein the sampling circuit 1 is connected with a first end point of the contact (2), the sampling circuit 2 is connected with a second end point of the contact (2), the communication module is connected with a control main board, and the power module is respectively connected with the control main board and the contact (2).
5. The method according to claim 4, wherein the sampling circuit 1 comprises an operational amplifier 1, the input end of the operational amplifier 1 in the same direction is connected to the first end of the contact (2), and is grounded via a resistor R1 and a capacitor C1 connected in parallel, the output end of the operational amplifier 1 is connected to the DIN1 end of the CPU via a resistor R2, the output end of the operational amplifier 1 is connected to the power supply end via an anode of a diode D1, and is grounded via a cathode of a diode D2, and the diode D2 is connected in parallel to the capacitor C2.
6. The method according to claim 4, wherein the sampling circuit 2 comprises an operational amplifier 2, the input end of the operational amplifier 2 in the same direction is connected to the second end of the contact (2), and is grounded via a resistor R3 and a capacitor C3 connected in parallel, the output end of the operational amplifier 2 is connected to the DIN2 end of the CPU via a resistor R4, the output end of the operational amplifier 2 is connected to the power supply end via the anode of a diode D3, and is grounded via the cathode of a diode D4, and the diode D3 is connected in parallel to the capacitor C4.
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| CN202110698775.0A CN113448313B (en) | 2021-06-23 | 2021-06-23 | Switch system with detection function and detection method |
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| CN202110698775.0A CN113448313B (en) | 2021-06-23 | 2021-06-23 | Switch system with detection function and detection method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841599A (en) * | 2012-08-24 | 2012-12-26 | 北京合锐赛尔电力科技有限公司 | Intelligent power distribution switch control circuit fault detection circuit and detection method thereof |
| CN109466981A (en) * | 2018-11-02 | 2019-03-15 | 上海三菱电梯有限公司 | A kind of safety return circuit detection circuit, detection method and mobile terminal |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6267219B1 (en) * | 2000-08-11 | 2001-07-31 | Otis Elevator Company | Electronic safety system for escalators |
| CN101746662B (en) * | 2008-12-17 | 2013-03-20 | 上海三菱电梯有限公司 | Escalator |
| CN202696570U (en) * | 2012-04-17 | 2013-01-23 | 潘卫文 | Energy-efficient intelligent switch without relay |
| DE102017222545A1 (en) * | 2017-12-13 | 2019-06-13 | Zf Friedrichshafen Ag | Method and control device for assessing the damage of a load-carrying component |
| CN110255345B (en) * | 2019-06-28 | 2024-01-02 | 快意电梯股份有限公司 | Device and method for detecting escalator floor plate |
| CN110716134A (en) * | 2019-10-17 | 2020-01-21 | 珠海格力电器股份有限公司 | Relay state detection circuit, device and method |
| CN112858895B (en) * | 2020-12-09 | 2023-04-14 | 国创移动能源创新中心(江苏)有限公司 | Novel direct current charging pile direct current relay adhesion judgment method and circuit thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841599A (en) * | 2012-08-24 | 2012-12-26 | 北京合锐赛尔电力科技有限公司 | Intelligent power distribution switch control circuit fault detection circuit and detection method thereof |
| CN109466981A (en) * | 2018-11-02 | 2019-03-15 | 上海三菱电梯有限公司 | A kind of safety return circuit detection circuit, detection method and mobile terminal |
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Denomination of invention: A switch system with built-in detection and detection method Granted publication date: 20230630 Pledgee: Zhejiang Commercial Bank Co.,Ltd. Hangzhou Linping Branch Pledgor: HANGZHOU XO-LIFT Co.,Ltd. Registration number: Y2024980001764 |
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