CN114455442A - Monitoring circuit for escalator - Google Patents
Monitoring circuit for escalator Download PDFInfo
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- CN114455442A CN114455442A CN202210165079.8A CN202210165079A CN114455442A CN 114455442 A CN114455442 A CN 114455442A CN 202210165079 A CN202210165079 A CN 202210165079A CN 114455442 A CN114455442 A CN 114455442A
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- escalator
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 83
- 230000005236 sound signal Effects 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000003990 capacitor Substances 0.000 claims description 47
- 238000001514 detection method Methods 0.000 claims description 16
- 230000002457 bidirectional effect Effects 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 abstract description 19
- 230000000694 effects Effects 0.000 abstract description 6
- 230000000087 stabilizing effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B29/00—Safety devices of escalators or moving walkways
- B66B29/005—Applications of security monitors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B25/00—Control of escalators or moving walkways
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B27/00—Indicating operating conditions of escalators or moving walkways
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- Escalators And Moving Walkways (AREA)
Abstract
The invention discloses a monitoring circuit for an escalator, which effectively solves the problem that the mode provided by the prior art cannot completely play an obvious effect when the escalator is abnormal. The monitoring circuit comprises a sound monitoring circuit and a distance monitoring circuit, wherein the sound monitoring circuit detects a sound signal of the escalator in the running process by using a microphone M1, and conducts the distance monitoring circuit after the sound signal is operated and filtered, the distance monitoring circuit detects a distance signal between a step and an apron plate by using a distance sensor U1, and the distance signal is compared and then operated, so that an alarm signal is output to a monitoring center, and the safety and the comfort of people using the escalator are further ensured.
Description
Technical Field
The invention relates to the field of monitoring, in particular to a monitoring circuit for an escalator.
Background
The escalator is the most common special equipment in various malls, the safety, the stability and the comfort of the escalator are concerned by people, and the comfort of people is greatly influenced by the sound generated in the running process of the escalator, so people always pay special attention to the sound of the escalator in the running process.
While the skilled person gradually summarizes during the actual use: when the phenomenon different from that in normal operation occurs in the escalator, the escalator indicates that the escalator has the possibility of threatening the safety of people, so technical personnel set detection modules such as current and voltage detection, brake detection, safety loop monitoring and the like aiming at components in the escalator, and send detected signals to a monitoring center for analysis, but when the skirt guard panel is scraped by the steps in the escalator, transient and sharp sounds are accompanied, but the detection modules cannot play an obvious effect because the phenomenon does not influence the operation of the escalator, but because technical personnel cannot stay beside the escalator all the time to observe the sounds of the escalator in operation, the monitoring center cannot know the state of the escalator at first time that the deviation occurs, and if the steps scrape the emergency guide rail straight, the comfort of people taking the escalator is also influenced, and affect the safe operation of the escalator.
The present invention therefore provides a new solution to this problem.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a monitoring circuit for an escalator, which effectively solves the problem that the mode provided by the prior art cannot completely play an obvious effect when the escalator is abnormal.
The technical scheme of its solution is, a monitoring circuit for automatic escalator, monitoring circuit includes sound monitoring circuit, distance monitoring circuit, sound monitoring circuit utilizes microphone M1 to detect the sound signal of automatic escalator in the operation to with the sound signal carry out the operation and carry out the operation with distance monitoring circuit switch-on after filtering, distance monitoring circuit utilizes distance sensor U1 to detect the distance signal between step and the apron board, and carry out the operation after comparing the distance signal, thereby output alarm signal to surveillance center.
Furthermore, the sound monitoring circuit detects the sound signal of the escalator in the operation process by using the microphone M1, and the distance monitoring circuit is started after the sound signal is subjected to multiplication and filtering.
Further, the sound monitoring circuit includes a microphone M1, one end of the microphone M1 is connected to one end of a resistor R11, one end of a resistor R1, and one end of a resistor R13, the other end of the resistor R5 is connected to a pin 1 of a multiplier V1, a pin 2 of the multiplier V1 is connected to one end of a resistor R1, the other end of a resistor R11 is connected to the other end of a resistor R1, one end of a switch S2 is connected to a positive polarity power source VCC, an output end of the multiplier V1 is connected to one end of a resistor R2, the other end of the resistor R2 is connected to one end of a resistor R4, one end of a capacitor C4, the other end of the resistor R4 is connected to the same phase terminal of a one end of a capacitor C4, the inverting terminal of the amplifier U2 4 is connected to one end of a resistor R4, the other end of the resistor R4 is connected to the output terminal of a rectifier 4, the positive polarity of a rectifier D4, and the negative electrode of a rectifier D4 of the rectifier D4, the negative electrode of the rectifier is connected to one end of the bidirectional rectifier 4 of the rectifier 4, One end of a capacitor C1, a control electrode of a thyristor Q1 and an anode of a thyristor Q1, wherein a cathode of the thyristor Q1 is connected with one end of a resistor R3, the other end of a resistor R3 is connected with one end of the capacitor C3, the other end of a capacitor C3 is respectively connected with the other end of the resistor R10, the other end of the capacitor C5, the other end of the capacitor C4, the other end of a resistor R13 and one end of a resistor R8, which are connected in parallel and grounded, the other end of a bidirectional voltage-regulator D2 is respectively connected with one end of a resistor R9 and one end of a capacitor C2, the other end of the capacitor C2 is respectively connected with the other end of a resistor R9 and a base of a triode Q4, a collector of the triode Q4 is connected with one end of a relay K1, the other end of a relay K1 is connected with the other end of a switch S2, and an emitter of the triode Q4 is connected with the other end of the resistor R8.
Further, the distance monitoring circuit comprises an arithmetic unit and an output unit, the arithmetic unit compares the distance signals between the steps detected by the distance sensor U1 and the skirt guard panel and performs addition operation, so that the output unit is started, and the output unit outputs an alarm signal to the monitoring center according to the arithmetic unit.
Further, the arithmetic unit includes a distance sensor U1, a pin out of the distance sensor U1 is connected to one end of a switch S1, the other end of the switch S1 is connected to one end of a resistor R12, the other end of the resistor R12 is connected to a common-phase terminal of an operational amplifier U4B, an inverting terminal of the operational amplifier U4B is connected to one end of a resistor R14 and one end of a resistor R15, an output terminal of the operational amplifier U4B is connected to one end of a resistor R16, the other end of the resistor R15 and an anode of a thyristor Q2, the other end of the resistor R16 is connected to the common-phase terminal of the operational amplifier U2B, an inverting terminal of the operational amplifier U2B is connected to one end of a resistor R17, an output terminal of the operational amplifier U2B is connected to one end of a resistor R B, an anode of a diode D B, a base of a triode Q B, a collector of the triode Q B is connected to one end of a resistor R B and one end of a capacitor C B, and another end of the resistor R B are connected to one end of the other end of the collector of the capacitor C B, respectively, A control electrode of the thyristor Q2, a cathode of the thyristor Q2 is connected with one end of a resistor R22, the other end of the resistor R22 is respectively connected with one end of a resistor R21, one end of a resistor R26 and the same-phase end of an operational amplifier U5B, an inverting end of the operational amplifier U5B is respectively connected with one end of the resistor R28 and one end of a resistor R27, an output end of the operational amplifier U5B is connected with the other end of a resistor R28, the other end of the resistor R21 is respectively connected with one end of a resistor R20 and an output end of an operational amplifier U3B, an inverting end of the operational amplifier U3B is respectively connected with one end of a resistor R19 and the other end of a resistor R20, the same-phase end of the operational amplifier U3B is connected with one end of a resistor R18, the other end of a resistor R18 is connected with a circuit distance signal, a VCC pin of a distance sensor U1 is respectively connected with the other end of a resistor R23, an emitter of a triode Q3, the other end of a resistor R17, the positive-polarity switch S2, the gnd pin of the distance sensor U1 is connected to the other end of the resistor R14, the other end of the resistor R19, the other end of the resistor R26, the other end of the resistor R27, the other end of the capacitor C6, the other end of the resistor R24, and one end of the resistor R8 in the sound monitoring circuit, and is connected to ground in parallel.
Further, the output device includes a resistor R30, one end of a resistor R30 is connected to one end of a switch S4, one end of a resistor R29, a base of a transistor Q5, the other end of a resistor R28 in the arithmetic unit, and an output end of an operational amplifier U5B, the other end of a resistor R30 is connected to a base of a transistor Q7, a collector of the transistor Q7 is connected to one end of a relay K2, an emitter of the transistor Q7 is connected to one end of a resistor R32, one end of a resistor R31, the other end of a resistor R27 in the arithmetic unit, and one end of a resistor R8 in the voice monitoring circuit are connected in parallel, the other end of a resistor R32 is connected to a collector of another detection module and a collector of a transistor Q5, an emitter of a transistor Q5 is connected to the other end of a resistor R29, the other end of a relay K2, one end of a resistor R33, a collector of a transistor Q6, an emitter of a transistor Q3 in the arithmetic unit, an emitter of a switch Q3 and one end of a positive polarity switch S2 in the voice monitoring circuit are connected to VCC, the other end of the resistor R31 is connected with the anode of the diode D3 and the emitter of the triode Q6, the cathode of the diode D3 is connected with the monitoring center, the base of the triode Q6 is connected with the other end of the switch S4, one end of the switch S3 and the other end of the resistor R33, and the other end of the switch S3 is connected with the cathode of the diode D1 in the arithmetic unit.
The invention realizes the following beneficial effects:
the escalator is provided with the sound monitoring circuit and the distance monitoring circuit, sound signals of the escalator in the operation process are collected by the sound monitoring circuit, whether abnormal signals are obtained after multiplication and filtering are carried out on the sound signals, whether different abnormal sounds occur in the escalator in the normal operation process is judged, the distance detection circuit is started, whether the abnormal sounds are caused by deviation of steps is judged, an alarm signal is correspondingly output to the monitoring center, the monitoring center is reminded, and the problem that the mode provided by the prior art cannot completely play an obvious effect when the escalator is abnormal is solved.
Drawings
Fig. 1 is a schematic diagram of a sound monitoring circuit of the present invention.
Fig. 2 is a schematic diagram of a distance monitoring circuit of the present invention.
Detailed Description
The foregoing and other technical and functional aspects of the present invention will be apparent from the following detailed description of the embodiments, which proceeds with reference to the accompanying figures 1-2. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
The utility model provides a monitoring circuit for automatic escalator, uses in automatic escalator's inside, monitoring circuit includes sound monitoring circuit, distance monitoring circuit, sound monitoring circuit utilizes microphone M1 to detect automatic escalator's sound signal at the operation in-process to with sound signal carry out the operation and carry out the operation with distance monitoring circuit switch on after filtering, distance monitoring circuit utilizes distance sensor U1 to detect the distance signal between step and the apron board, and carries out the operation after comparing distance signal, thereby output alarm signal to surveillance center.
The sound monitoring circuit comprises a microphone M1, one end of a microphone M1 is connected with one end of a resistor R11, one end of a resistor R1 and one end of a resistor R13 respectively, the other end of the resistor R5 is connected with a pin 1 of a multiplier V1, a pin 2 of the multiplier V1 is connected with one end of a resistor R1, the other end of the resistor R11 is connected with the other end of a resistor R1 and one end of a switch S2 respectively and connected with a positive power supply VCC, an output end of the multiplier V1 is connected with one end of a resistor R2, the other end of the resistor R2 is connected with one end of a resistor R4 respectively, one end of a capacitor C4, the other end of the resistor R4 is connected with the same phase end of an operational amplifier U2A at one end of the capacitor C5 respectively, the inverting end of the operational amplifier U2A is connected with one end of a resistor R10 and one end of a resistor R6 respectively, the other end of the resistor R6 is connected with the other end of the output end of an operational amplifier U2A and the positive electrode of a stabilivolt D4, one end of a stabilivolt D4 is connected with a bidirectional stabilivolt D2 at one end of a bidirectional stabilivolt D42 respectively, and a bidirectional stabilivolt D73742 at the other end of the resistor R6 respectively, One end of a capacitor C1, a control electrode of a thyristor Q1 and an anode of a thyristor Q1, wherein a cathode of the thyristor Q1 is connected with one end of a resistor R3, the other end of a resistor R3 is connected with one end of the capacitor C3, the other end of a capacitor C3 is respectively connected with the other end of the resistor R10, the other end of the capacitor C5, the other end of the capacitor C4, the other end of a resistor R13 and one end of a resistor R8, which are connected in parallel and grounded, the other end of a bidirectional voltage-regulator D2 is respectively connected with one end of a resistor R9 and one end of a capacitor C2, the other end of the capacitor C2 is respectively connected with the other end of a resistor R9 and a base of a triode Q4, a collector of the triode Q4 is connected with one end of a relay K1, the other end of a relay K1 is connected with the other end of a switch S2, and an emitter of the triode Q4 is connected with the other end of the resistor R8;
the sound monitoring circuit detects a sound signal of the escalator in the operation process by using a microphone M1, the sound signal is transmitted to a multiplier V1 through a resistor R5, the multiplier V1 performs multiplication operation on the sound signal and a standard sound signal provided by a resistor R1, wherein the standard sound signal is normal sound emitted by the escalator in normal operation, the multiplier V1 outputs the frequency difference and the frequency sum of the sound signal and the standard sound signal, and inputs the frequency difference and the frequency sum to an active low-pass filter taking the resistor R2, the resistor R4, a capacitor C5, a capacitor C4 and an operational amplifier U2A as cores, so that the frequency sum is filtered, only the existence of a voltage stabilizing frequency difference is reserved, when the frequency difference enables a thyristor D3 to be conducted, the sound emitted by the escalator is large, and when the frequency difference enables the thyristor Q1 to be conducted through the capacitor C1, the frequency difference indicates that the sound is a long normal phenomenon of the escalator, at the moment, the thyristor Q1 discharges the frequency difference to the ground through the resistor R3 and the capacitor C3, when the frequency difference enables the bidirectional voltage-stabilizing tube D2 to be conducted, the escalator generates abnormal sound at the moment, the state of components in the escalator deviates, the frequency difference of the frequency difference serves as an abnormal signal, the abnormal signal utilizes the resistor R9, the capacitor C2 and the triode Q3 to conduct the relay K1 quickly, and the relay K1 enables the distance monitoring circuit to be conducted.
The arithmetic device comprises a distance sensor U1, a pin out of the distance sensor U1 is connected with one end of a switch S1, the other end of the switch S1 is connected with one end of a resistor R12, the other end of the resistor R12 is connected with a non-inverting end of an operational amplifier U4B, an inverting end of the operational amplifier U4B is connected with one end of a resistor R14 and one end of a resistor R15 respectively, an output end of the operational amplifier U4B is connected with one end of a resistor R16, the other end of the resistor R15 and an anode of a thyristor Q2 respectively, the other end of a resistor R16 is connected with the non-inverting end of the operational amplifier U2B, the inverting end of the operational amplifier U2B is connected with one end of a resistor R17, an output end of the operational amplifier U2B is connected with one end of a resistor R23, an anode of a diode D1 and a base of a triode Q3 respectively, a collector of a triode Q3 is connected with one end of a resistor R24 and one end of a resistor R25 respectively, one end of a resistor R25 is connected with one end of a capacitor C2 and a control capacitor Q6, the cathode of the thyristor Q2 is connected to one end of a resistor R22, the other end of the resistor R22 is connected to one end of a resistor R21, one end of a resistor R26, and the same-phase end of an operational amplifier U5B, the inverting end of the operational amplifier U5B is connected to one end of a resistor R28 and one end of a resistor R27, the output end of the operational amplifier U5B is connected to the other end of the resistor R28, the other end of the resistor R21 is connected to one end of a resistor R20 and the output end of the operational amplifier U3B, the inverting end of the operational amplifier U3B is connected to one end of a resistor R19 and the other end of a resistor R6852, the same-phase end of the operational amplifier U3B is connected to one end of a resistor R18, the other end of the resistor R18 is connected to a channel distance signal, the VCC pin of the distance sensor U18 is connected to the other end of the resistor R18, the emitter of the triode Q18, the other end of the resistor R18, the other end of the resistor 18, one end of the positive polarity S18 in the monitoring circuit, and one end of the positive polarity switch S18 VCC pin of the resistor S18 is connected to the distance sensor U18, and the distance sensor pin d pin of the resistor R18 is connected to the resistor R18, The other end of the resistor R19, the other end of the resistor R26, the other end of the resistor R27, the other end of the capacitor C6, the other end of the resistor R24 and one end of the resistor R8 in the sound monitoring circuit are connected in parallel and connected with the ground;
the output device comprises a resistor R30, one end of a resistor R30 is respectively connected with one end of a switch S4, one end of a resistor R29, a base of a triode Q5, the other end of a resistor R28 in the arithmetic device and an output end of an operational amplifier U5B, the other end of a resistor R30 is connected with a base of a triode Q7, a collector of the triode Q7 is connected with one end of a relay K2, an emitter of the triode Q7 is respectively connected with one end of a resistor R32, one end of a resistor R31, the other end of a resistor R27 in the arithmetic device and one end of a resistor R8 in the voice monitoring circuit are connected with the ground in parallel, the other end of the resistor R32 is respectively connected with the other detection module and a collector of a triode Q5, an emitter of the triode Q5 is respectively connected with the other end of the resistor R29, the other end of the relay K2, one end of a resistor R33, a collector of the triode Q6, an emitter of the triode Q3 in the arithmetic device, one end of a switch S2 in the voice monitoring circuit is connected with a positive power supply VCC, the other end of the resistor R31 is respectively connected with the anode of the diode D3 and the emitter of the triode Q6, the cathode of the diode D3 is connected with the monitoring center, the base of the triode Q6 is respectively connected with the other end of the switch S4, one end of the switch S3 and the other end of the resistor R33, and the other end of the switch S3 is connected with the cathode of the diode D1 in the arithmetic unit;
the switch S1 in the distance monitoring circuit is closed, and the distance sensor U1 is utilized to detect the distance signal between the step and the skirt panel, the distance sensor can adopt a distance sensor with the model AS5600-ASOT, because the escalator has two positions where the step and the skirt panel are intersected, two distance sensors are installed, wherein the distance signal detected by one distance sensor is amplified by an operation device U4B and then transmitted to an operation device U2B, the phenomenon that the distance between the step and the skirt panel is too small to cause the amplitude signal of the detected distance signal to be too small is avoided, the distance signal is compared with the standard distance signal provided by the operation device U2B and a resistor R17, wherein the standard distance signal is 4mm, when the operation device U2B conducts a diode D1, the distance between the skirt panel and the step at the current side is too large, namely, the diode D1 outputs an alarm signal to an output device when the step at the current side deviates, when the operational amplifier U2B turns on the triode Q3, the distance between the skirt board and the step at one side is in a normal state, the triode Q3 turns on the thyristor Q2 through the resistor R25 and the capacitor C6, the thyristor Q2 transmits a distance signal to the operational amplifier U5B, the distance signal is added with the other path of distance signal amplified by the operational amplifier U3B to output a sum signal to an output device, the other path of distance signal is the distance signal between the skirt board and the step at the other side acquired by the other distance sensor, after the output device is turned on by the arithmetic device, the sum signal is judged by using the triode Q7 and the triode Q5, when the triode Q5 is turned on, the distance between the step at two sides and the skirt board is normal at the moment, and abnormal sound emitted by the escalator is caused by other reasons, the triode Q5 turns on other detection modules, therefore, the comprehensive detection of the escalator is started, wherein other detection modules are the detection modules mentioned in the background technology, when the triode Q7 is conducted, the situation that the step on the other side is too large with the apron board at the moment is indicated, namely the step on the other side deviates, the triode Q7 conducts the relay K2, the relay K2 closes the switch S4, the switch S3 is disconnected, the sum signal is transmitted to the monitoring center through the triode Q6 as an alarm signal at the moment, if the output device receives the alarm signal transmitted by the diode D1, the sum signal is transmitted to the monitoring center through the triode Q6, when the relay K2 is conducted, the switch S3 is disconnected, when the relay K2 is not conducted, the switch S3 is closed, the situation that the step of the monitoring center deviates is reminded, so that abnormal sound which is not abnormal when the escalator is in a normal state is generated is required to be processed, and when the maintenance of the escalator is finished by technical personnel, the switch S2 is automatically turned off, i.e., the distance monitoring circuit stops working, and the sound monitoring circuit continues to monitor.
When the invention is used, the sound monitoring circuit detects a sound signal of the escalator in the running process by using the microphone M1, the sound signal is transmitted to the multiplier V1 through the resistor R5, the multiplier V1 multiplies the sound signal by a standard sound signal, the multiplier V1 outputs the frequency difference and the frequency sum of the sound signal and the standard sound signal, and inputs the frequency difference and the frequency sum to the active low-pass filter taking the resistor R2, the resistor R4, the capacitor C5, the capacitor C4 and the operational amplifier U2A as cores, only the existence of the frequency difference is reserved, when the frequency difference switches on the voltage stabilizing tube D3, the escalator emits sound at the moment, when the frequency difference is that the thyristor Q1 can be switched on through the capacitor C1, the thyristor Q1 discharges the frequency difference to the ground through the resistor R3 and the capacitor C3, and when the frequency difference switches on the bidirectional voltage stabilizing tube D2, taking the frequency difference of the frequency difference as an abnormal signal, quickly conducting a relay K1 by using a resistor R9, a capacitor C2 and a triode Q3 by using the abnormal signal, conducting the distance monitoring circuit by using a relay K1, closing a switch S1 in the distance monitoring circuit, starting to detect a distance signal between a step and an apron board by using a distance sensor U1, amplifying the distance signal by using an operational amplifier U4B and then transmitting the amplified distance signal to an operational amplifier U2B, comparing the distance signal with a standard distance signal provided by the operational amplifier U2B and a resistor R17, when the operational amplifier U2B conducts a diode D1, a diode D1 outputs an alarm signal to an output device, when the operational amplifier U2B conducts the triode Q3, the triode Q3 conducts a thyristor Q2 through a resistor R25 and a capacitor C6, transmitting the distance signal to the operational amplifier U5B by using the thyristor Q2, and adding the distance signal with the distance signal of another amplifier U3 after the distance signal is amplified by the operational amplifier U B, outputting sum signals to an output device, wherein after the output device is conducted by an arithmetic device, the sum signals are judged by using a triode Q7 and a triode Q5, when a triode Q5 is conducted, the triode Q5 conducts other detection modules so as to start the comprehensive detection of the escalator, when a triode Q7 is conducted, a triode Q7 conducts a relay K2, a switch S4 of the relay K2 is closed, a switch S3 is disconnected, the sum signals are transmitted to a monitoring center through the triode Q6 as alarm signals at the moment, if the output device receives the alarm signals transmitted through a diode D1, the alarm signals are also transmitted to the monitoring center through a triode Q6, when the relay K2 is conducted, the switch S3 is disconnected, when the relay K2 is not conducted, the switch S3 is closed, and the monitoring center is reminded that the escalator generates sound which is not abnormal when the escalator is deviated and the escalator is in a normal state, and processing is needed, and when the technician finishes maintaining the escalator, the switch S2 is automatically switched off, namely, the distance monitoring circuit stops working, and the sound monitoring circuit continues to monitor.
The invention achieves the following effects:
(1) the escalator is provided with the sound monitoring circuit and the distance monitoring circuit, the sound monitoring circuit is used for collecting sound signals of the escalator in the running process, multiplication operation and filtering are carried out on the sound signals to obtain whether abnormal signals are obtained or not, so that whether different abnormal sounds occur in the normal working process of the escalator or not is judged, the distance detection circuit is started, whether the abnormal sounds are caused by the deviation of the steps or not is judged, an alarm signal is correspondingly output to the monitoring center, the monitoring center is reminded, and the problem that the mode provided by the prior art cannot completely play an obvious effect when the escalator is abnormal is solved;
(2) carry out automatic monitoring to escalator through sound monitoring circuit and distance monitoring circuit, utilize sound monitoring circuit to detect escalator for a long time, and utilize sound monitoring circuit to start distance monitoring circuit, whether distance monitoring circuit takes place the state of skew to the step and carries out accurate control, and detect escalator comprehensively when starting other detection module, thereby realize detecting escalator before the technical staff comprehensively escalator, the check-out time of technical staff to escalator has been reduced, thereby escalator's maintenance duration has been shortened.
Claims (6)
1. The monitoring circuit for the escalator is characterized by comprising a sound monitoring circuit and a distance monitoring circuit, wherein the sound monitoring circuit detects sound signals of the escalator in the operation process by using a microphone M1, and conducts the distance monitoring circuit after the sound signals are operated and filtered, the distance monitoring circuit detects distance signals between steps and a skirt panel by using a distance sensor U1, compares the distance signals and then operates, and accordingly outputs alarm signals to a monitoring center.
2. A monitoring circuit for an escalator as claimed in claim 1, wherein said sound monitoring circuit uses microphone M1 to detect the sound signal of the escalator during operation, and after multiplication and filtering of the sound signal, the distance monitoring circuit is activated.
3. A monitoring circuit for an escalator as claimed in claim 2, characterized in that said sound monitoring circuit comprises a microphone M1, one end of a microphone M1 is connected to one end of a resistor R11, one end of a resistor R1 and one end of a resistor R13, the other end of a resistor R5 is connected to pin 1 of a multiplier V1, pin 2 of a multiplier V1 is connected to one end of a resistor R1, the other end of a resistor R11 is connected to the other end of a resistor R1 and one end of a switch S2 respectively and to a positive power supply, the output end of a multiplier V1 is connected to one end of a resistor R2, the other end of a resistor R2 is connected to one end of a resistor R4 and one end of a capacitor C4, the other end of a resistor R4 is connected to the same phase end of an operational amplifier U2A of a capacitor C5, the inverting end of the operational amplifier U2A is connected to one end of a resistor R10 and one end of a resistor R6, and the other end of a resistor R6 is connected to the output of an operational amplifier U2A respectively and the other end of a resistor R A respectively and the amplifier is connected to one end of a positive power supply, The anode of a voltage-regulator tube D4, the cathode of a voltage-regulator tube D4 are respectively connected with one end of a bidirectional voltage-regulator tube D2, one end of a capacitor C1, the control electrode of a thyristor Q1 and the anode of a thyristor Q1, the cathode of the thyristor Q1 is connected with one end of a resistor R3, the other end of the resistor R3 is connected with one end of a capacitor C3, the other end of the capacitor C3 is respectively connected with the other end of a resistor R10 and the other end of a capacitor C5, the other end of the capacitor C4, the other end of the resistor R13 and one end of the resistor R8 are connected in parallel and grounded, the other end of the bidirectional voltage regulator tube D2 is respectively connected with one end of the resistor R9 and one end of the capacitor C2, the other end of the capacitor C2 is respectively connected with the other end of the resistor R9 and the base of the triode Q4, the collector of the triode Q4 is connected with one end of the relay K1, the other end of the relay K1 is connected with the other end of the switch S2, and the emitter of the triode Q4 is connected with the other end of the resistor R8.
4. A monitoring circuit for an escalator as claimed in claim 1, wherein said distance monitoring circuit includes an operator and an output device, said operator compares the distance signals between the steps and the skirt panel detected by the distance sensor U1 and performs addition operation to activate the output device, said output device outputs an alarm signal to the monitoring center according to the operator.
5. A monitoring circuit for an escalator as claimed in claim 4, wherein said operator comprises a distance sensor U1, the out pin of the distance sensor U1 is connected to one end of a switch S1, the other end of the switch S1 is connected to one end of a resistor R12, the other end of the resistor R12 is connected to the non-inverting terminal of an operational amplifier U4B, the inverting terminal of the operational amplifier U4B is connected to one end of a resistor R14 and one end of a resistor R15, the output terminal of the operational amplifier U4B is connected to one end of a resistor R16, the other end of a resistor R15 and the anode of a thyristor Q2, the other end of the resistor R16 is connected to the non-inverting terminal of an operational amplifier U2B, the inverting terminal of the operational amplifier U2B is connected to one end of a resistor R17, the output terminal of the operational amplifier U2B is connected to one end of a resistor R23, the anode of a diode D1, the base of a transistor Q6, and one end of a collector of a resistor Q3 is connected to the collector of a resistor R24, One end of a resistor R25, the other end of the resistor R25 are respectively connected with one end of a capacitor C6 and a control electrode of a thyristor Q2, a cathode of the thyristor Q2 is connected with one end of a resistor R22, the other end of the resistor R22 is respectively connected with one end of a resistor R21, one end of a resistor R26 and the same-phase end of an operational amplifier U5B, an inverting end of the operational amplifier U5B is respectively connected with one end of a resistor R28 and one end of a resistor R27, an output end of the operational amplifier U5 is connected with the other end of the resistor R28, the other end of the resistor R21 is respectively connected with one end of a resistor R21 and an output end of the operational amplifier U3 21, an inverting end of the operational amplifier U3 21 is respectively connected with one end of the resistor R21 and the other end of the resistor R21, the same-phase end of the operational amplifier U3 21 is connected with one end of the resistor R21, the other end of the resistor R21, the emitter is connected with a distance signal, a vcc pin of a distance sensor U21 is respectively connected with the other end of the triode 21, a resistor R21, a resistor Q21 and a control electrode of the other end of the resistor Q21, and a resistor R21, and a resistor R21, the same-phase of the other end of the amplifier U21 are respectively, One end of a switch S2 in the voice monitoring circuit is connected with a positive polarity power supply VCC, and a gnd pin of a distance sensor U1 is connected with the other end of a resistor R14, the other end of a resistor R19, the other end of a resistor R26, the other end of a resistor R27, the other end of a capacitor C6, the other end of a resistor R24 and one end of a resistor R8 in the voice monitoring circuit in parallel connection and connected with the ground.
6. A monitoring circuit for an escalator as claimed in claim 4, wherein said output device comprises a resistor R30, one end of a resistor R30 is connected to one end of a switch S4, one end of a resistor R29, a base of a transistor Q5, the other end of a resistor R28 in the operator, and an output end of an operational amplifier U5B, the other end of the resistor R30 is connected to a base of a transistor Q7, a collector of the transistor Q7 is connected to one end of a relay K2, an emitter of a transistor Q7 is connected to one end of a resistor R32, one end of a resistor R31, the other end of a resistor R27 in the operator, and one end of a resistor R8 in the voice monitoring circuit are connected in parallel to ground, the other end of the resistor R32 is connected to the other detection module and a collector of a transistor Q5, emitters of a transistor Q5 are connected to the other end of a resistor R29, the other end of a relay K2, one end of a resistor R33, and a collector of a transistor Q6, An emitter of a triode Q3 in the arithmetic unit and one end of a switch S2 in the sound monitoring circuit are connected with a positive polarity power supply VCC, the other end of a resistor R31 is respectively connected with an anode of a diode D3 and an emitter of a triode Q6, a cathode of a diode D3 is connected with a monitoring center, a base of the triode Q6 is respectively connected with the other end of a switch S4, one end of a switch S3 and the other end of a resistor R33, and the other end of a switch S3 is connected with a cathode of a diode D1 in the arithmetic unit.
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| CN202210165079.8A CN114455442B (en) | 2022-02-23 | 2022-02-23 | Monitoring circuit for escalator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114455441A (en) * | 2022-02-23 | 2022-05-10 | 济源职业技术学院 | Automatic monitoring circuit of escalator |
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| CN114455441B (en) * | 2022-02-23 | 2024-08-23 | 济源职业技术学院 | Automatic monitoring circuit of escalator |
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| CN114455442B (en) | 2024-09-17 |
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