CN113682914A - Elevator safety device for preventing runaway - Google Patents
Elevator safety device for preventing runaway Download PDFInfo
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- CN113682914A CN113682914A CN202110837279.9A CN202110837279A CN113682914A CN 113682914 A CN113682914 A CN 113682914A CN 202110837279 A CN202110837279 A CN 202110837279A CN 113682914 A CN113682914 A CN 113682914A
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- 230000005669 field effect Effects 0.000 claims abstract description 103
- 239000003990 capacitor Substances 0.000 claims abstract description 58
- 238000005070 sampling Methods 0.000 claims abstract description 19
- 238000012544 monitoring process Methods 0.000 claims abstract description 18
- 230000002457 bidirectional effect Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 abstract description 12
- 238000001914 filtration Methods 0.000 abstract description 5
- 230000003321 amplification Effects 0.000 abstract description 4
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000003139 buffering effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Abstract
The application relates to an anti-runaway elevator safety device which comprises a differential sampling module circuit, a threshold monitoring circuit and a core control circuit. Firstly, the differential sampling circuit can accurately acquire the running state of the elevator by utilizing the characteristics of differential signals, and the operational amplifier is used for carrying out signal low-frequency amplification processing, and meanwhile, the capacitor bank is embedded for filtering the environmental interference. Secondly, the threshold monitoring module mainly adopts a field effect transistor and a triode to be connected in series and in parallel to judge and monitor the signal processed by the previous stage, and outputs the judged result to the next stage. And finally, the core control circuit changes the running state of the elevator according to the processing signal of the previous stage and gives alarms of different levels.
Description
Technical Field
The application relates to the field of elevator safety and electronic circuits, in particular to an anti-runaway elevator safety device.
Background
The urbanization process is accelerated to pull up many high-rise buildings, and the elevator industry in China is continuously developed. However, with the continuous development of high-rise building engineering, in recent years, elevator accidents begin to emerge endlessly, and the "car-sliding" and "car-flying" of the elevator are the most common problems. There are many reasons for elevator failure such as: poor contact of parts, electromagnetic interference, failure of frequency converter and the like. Therefore, the construction requirements of the elevator industry are more strict. . Therefore, in order to solve the problems, the elevator installation device capable of preventing the runaway is designed based on the permanent magnet synchronous traction machine, and the safety detection circuit is added on the permanent magnet synchronous traction machine, so that the stability of the elevator is greatly enhanced.
As shown in fig. 1, for the differential sampling circuit in the prior art, the field effect transistor is used as a signal bias and signal amplification device as a whole, which has low power consumption and fast response, but the field effect transistor is easily interfered by external electromagnetic signals, so that a plurality of capacitance filter circuits capable of being manually switched must be added, which has poor sampling precision, and increases the cost, volume and circuit complexity of the device.
As shown in fig. 2, a central control circuit in the prior art adopts a TM32 series processor as a control center, and connects a sensing module, a driving module, a switch group, etc. externally, so that the degree of automation is high, but a safety protection system of a control system is lacked, and a large potential safety hazard exists.
Disclosure of Invention
Problem (A)
1. The safety control precision of the prior art is low.
2. The safety control system in the prior art is not perfect.
3. The prior art has high power consumption.
(II) technical scheme
To the technical problem, the application provides an elevator safety device for preventing galloping, including difference sampling module circuit, threshold value monitoring circuit and core control circuit.
The differential sampling circuit can accurately acquire the running state of the elevator by utilizing the characteristics of differential signals, and meanwhile, the operational amplifier is used for carrying out signal low-frequency amplification processing and filtering the environmental interference amount through the capacitor bank. First, a differential signal is input from the input port Vin and the input port Va, but there is a difference between the two ends. The signal input at the input port Vin serves as a main processing amount, and the signal input at the input port Va serves as a reference amount. Therefore, the signal at the input port Vin passes through the diode D1, the weak interference in the environment is filtered by using the one-way conductivity of the diode D1, then the signal passes through the matching resistor network, which is mainly composed of the resistor R1, the resistor R3 and the resistor R4, the reference signal passes through the resistor R16 and then is transmitted to the diode D2, and the high-voltage signal is extracted from the diode D2. Then the two signals simultaneously enter into a triode Q3, respectively enter into a collector and an emitter of the triode and are output from a base of the triode to form a signal adding circuit. The signal then enters a field effect transistor for buffering and enters a negative feedback operational amplifier U1 through a resistor R17. The part of the superposition of the two signals, namely the working state signal of the elevator, is extracted through a derivative feedback circuit formed by a resistor R10 and a capacitor C5, and finally the signal is input to a next-stage module after passing through a resistor R13.
And the threshold monitoring module is mainly used for judging and monitoring the signal processed by the previous stage by adopting series-parallel connection of a field effect transistor and a triode and outputting the judged result to the next stage. After the signal is input through the node Va, the signal firstly passes through a cascade switch circuit formed by a power field effect transistor Q11 and a field effect transistor Q7, and a resistor R30 and a resistor R26 select a preliminary threshold value of the signal. After the initial judgment, the signal is transmitted to the field effect transistor Q8 through the resistor R31, and the field effect transistor Q8 performs a buffering function and then is output to the capacitor C10 through the source electrode of the field effect transistor. The capacitor C10 is used for simple filtering to filter out the interference signal of the system processing circuit. The signal enters the switching field effect transistor Q6 and is output at its drain, transmitted through resistor R32 to node Vb, and transmitted through node Vb to the next stage.
The core control circuit changes the running state of the elevator according to the processing signal of the previous stage and gives alarms of different levels. After the signal processing of the first two stages, the processed signal enters the control circuit through the node Vb. The signal is first passed through a resistor matching network and then input to the operational amplifier U2 through a resistor R15, and the amplifier U2 makes a simple signal judgment and generates a preliminary control signal. The signal is transmitted to the operational amplifier U3 through the resistor R12 and the diode D3. The amplifier U3 will generate the final control signal through negative feedback to control the current state of the elevator, when the state of the elevator monitored by the current level is "runaway", the elevator will be controlled to stop running at this time, and an alarm is given, i.e. the signal output by the resistor R24 is used to control.
(III) advantageous effects
The application provides an elevator safety device of preventing driving utilizes and seals star technique as the basis, at first, can very big improvement elevator's safety control precision, secondly, increases safety control circuit on sealing star technique, makes its security obtain very big improvement, and at last, utilizes magnetism to give birth to the electricity as the core thought, makes its consumption lower, controls simply.
Drawings
Fig. 1 is a prior art differential sampling circuit.
Fig. 2 is a prior art central control circuit.
Fig. 3 is a schematic diagram of a differential sampling module of the present application.
Fig. 4 is a schematic diagram of a threshold monitoring circuit of the present application.
Fig. 5 is a schematic diagram of a core control circuit according to the present application.
Detailed Description
The present invention will be further described with reference to the following examples.
As shown in fig. 3, 4, and 5, the elevator safety device for preventing runaway of the present application includes a differential sampling module circuit, a threshold monitoring circuit, and a core control circuit.
To the technical problem, the application provides an elevator safety device for preventing galloping, including difference sampling module circuit, threshold value monitoring circuit and core control circuit.
The differential sampling circuit can accurately acquire the running state of the elevator by utilizing the characteristics of differential signals, and meanwhile, the operational amplifier is used for carrying out signal low-frequency amplification processing and filtering the environmental interference amount through the capacitor bank. First, a differential signal is input from the input port Vin and the input port Va, but there is a difference between the two ends. The signal input at the input port Vin serves as a main processing amount, and the signal input at the input port Va serves as a reference amount. Therefore, the signal at the input port Vin passes through the diode D1, the weak interference in the environment is filtered by using the one-way conductivity of the diode D1, then the signal passes through the matching resistor network, which is mainly composed of the resistor R1, the resistor R3 and the resistor R4, the reference signal passes through the resistor R16 and then is transmitted to the diode D2, and the high-voltage signal is extracted from the diode D2. Then the two signals simultaneously enter into a triode Q3, respectively enter into a collector and an emitter of the triode and are output from a base of the triode to form a signal adding circuit. The signal then enters a field effect transistor for buffering and enters a negative feedback operational amplifier U1 through a resistor R17. The part of the superposition of the two signals, namely the working state signal of the elevator, is extracted through a derivative feedback circuit formed by a resistor R10 and a capacitor C5, and finally the signal is input to a next-stage module after passing through a resistor R13.
Specifically, the differential sampling module circuit includes an output port Vin, an input port Va, an amplifier U1, an inductor L1, 2 diodes D1 and D2, 2 power field effect transistors Q1 and Q4, 2 triodes Q2 and Q3, 5 capacitors C1, C2, C3, C4 and C5, and 14 resistors R1, R2, R3, R4, R6, R7, R8, R10, R13, R16, R17, R18, R19 and R21: in the differential sampling module circuit, an input port Vin is connected with the anode of a diode D1, a No. 5 interface of an amplifier U1 is grounded, one end of a resistor R21 is connected with a No. 1 interface of the amplifier U1, the other end of the resistor R21 is grounded, one end of a resistor R13 is connected with a No. 2 interface of an amplifier U1, the other end of the resistor R13 is respectively connected with one end of a capacitor C5, one end of a resistor R7 and one end of a resistor R18, the other end of a capacitor C5 is connected with a No. 4 interface of the amplifier U1, the other end of a resistor R7 is connected with the source end of a power field effect transistor, the other end of the resistor R18 is grounded, a No. 3 interface of the amplifier U1 is connected with a high-level VCC, one end of a resistor R10 is connected with a high-level VCC, the other end of the resistor R10 is connected with a No. 4 interface of the amplifier U1, one end of a resistor R17 is connected with a No. 4 interface of the amplifier U1, and the other end of the resistor R17 is connected with the gate of the power field effect transistor Q4, the drain terminal of the power field effect transistor Q4 is grounded, and the source terminal of the power field effect transistor Q4 is connected with the base of the triode Q3. One end of the resistor R19 is connected with an emitter of the triode Q3, the other end of the resistor R19 is grounded, a collector of the triode Q3 is connected with a base of the triode Q2, one end of the resistor R8 is connected with an emitter of the triode Q2, and the other end of the resistor R8 is connected with a base of the triode Q2.
Specifically, the differential sampling module circuit includes an output port Vin, an input port Va, an amplifier U1, an inductor L1, 2 diodes D1 and D2, 2 power field effect transistors Q1 and Q4, 2 transistors Q2 and Q3, 5 capacitors C1, C2, C3, C4 and C5, and 14 resistors R1, R2, R3, R4, R6, one end of the resistor R6 is connected to a cathode of the diode D6, the other end of the resistor R6 is connected to an emitter of the transistor Q6, the other end of the resistor R6 is connected to the cathode of the diode D6, the other end of the resistor R6 is connected to the emitter of the diode Q6, the cathode of the resistor R6 is connected to the emitter of the diode D6, and the cathode of the resistor R6 is connected to the emitter of the diode Q6, the other end of the resistor R4 is connected with the emitter of the triode Q2, the collector of the triode Q2 is connected with a high level VCC, one end of the inductor L1 is connected with the high level VCC, the other end of the inductor L1 is connected with the drain of the power field effect transistor Q1, one end of the resistor R6 is connected with the drain of the power field effect transistor Q1, the other end of the resistor R6 is connected with the interface No. 1 of the amplifier U1, one end of the capacitor C4 is connected with the gate of the power field effect transistor, the other end of the capacitor C4 is connected with the source of the power field effect transistor, one end of the capacitor C1 is connected with the high level VCC, the other end of the capacitor C1 is grounded, one end of the capacitor C2 is connected with the high level VCC, the other end of the capacitor C2 is grounded, one end of the capacitor C3 is connected with the high level VCC, the other end of the capacitor C3 is grounded, the anode of the diode D1 is connected with the emitter of the triode Q3, one end of the resistor R16 is connected with the cathode of the diode D2, the other end of the resistor R16 is connected to the input port Va.
And the threshold monitoring module is mainly used for judging and monitoring the signal processed by the previous stage by adopting series-parallel connection of a field effect transistor and a triode and outputting the judged result to the next stage. After the signal is input through the node Va, the signal firstly passes through a cascade switch circuit formed by a power field effect transistor Q11 and a field effect transistor Q7, and a resistor R30 and a resistor R26 select a preliminary threshold value of the signal. After the initial judgment, the signal is transmitted to the field effect transistor Q8 through the resistor R31, and the field effect transistor Q8 performs a buffering function and then is output to the capacitor C10 through the source electrode of the field effect transistor. The capacitor C10 is used for simple filtering to filter out the interference signal of the system processing circuit. The signal enters the switching field effect transistor Q6 and is output at its drain, transmitted through resistor R32 to node Vb, and transmitted through node Vb to the next stage.
Specifically, the threshold monitoring circuit comprises an input port Va, an output port Vb, 3 power field effect transistors Q, 2 triodes Q, 4 field effect transistors Q, 9 resistors R, C, an emitter of the triode Q in the threshold monitoring circuit is connected with a high level VCC, one end of the resistor R is connected with the high level VCC, the other end of the resistor R is connected with a base of the triode Q, one end of the resistor R is connected with a base of the triode Q, the other end of the resistor R is connected with one end of the resistor R and a drain of the field effect transistor Q, the other end of the resistor R is connected with a collector of the triode Q, a source end of the field effect transistor Q, and one end of the resistor R, the other end of the resistor R is connected with one end of the resistor R, the other end of the resistor R25 is connected with the drain terminal of the power field effect transistor Q6, the gate of the field effect transistor Q7 is connected with the drain terminal of the power field effect transistor Q11, the source terminal of the power field effect transistor Q11 is grounded, one end of the resistor R33 is connected with the gate of the power field effect transistor Q11, the other end of the resistor R33 is grounded, the source terminal of the field effect transistor Q7 is connected with the gate of the field effect transistor Q13 and the drain terminal of the field effect transistor Q13, and the drain terminal of the field effect transistor Q8 is connected with the source terminal of the field effect transistor Q12, the drain terminal of the field effect transistor Q13, the gate of the field effect transistor Q12 and the gate of the field effect transistor Q13.
Specifically, the threshold monitoring circuit includes an input port Va, an output port Vb, 3 power field effect transistors Q6, 2 transistors Q6, 4 field effect transistors Q6, 9 resistors R6, and 2 capacitors C6, wherein the field effect transistor Q6 is designed to be connected to the emitter of the transistor Q6, the drain of the transistor Q6 is grounded, the source of the transistor Q6 is grounded, one end of the resistor R6 is connected to the base of the transistor Q6, the other end of the resistor R6 is grounded, the collector of the transistor Q6 is grounded, one end of the capacitor C6 is connected to the drain of the transistor Q6, the other end of the capacitor C6 is grounded, the positive terminal of the diode D6 is connected to the high power level of the transistor Q6, and the gate of the transistor Q6 is connected to the high power level, one end of a capacitor C10 is connected with a drain terminal of a field effect transistor Q8, the other end of a capacitor C10 is connected with a gate of a power field effect transistor Q6, one end of a resistor R28 is connected with a high-level VCC, the other end of a resistor R28 is connected with a resistor R32 and a drain terminal of the power field effect transistor Q6 respectively, the other end of the resistor R32 is connected with a drain terminal of a power field effect transistor Q10, a source terminal of the power field effect transistor Q10 is grounded, a gate of a power field effect transistor Q10 is connected with a source terminal of the power field effect transistor Q6 and a drain terminal of the field effect transistor Q8 respectively, an input port Va is connected with a gate of the power field effect transistor Q11, and an output port Vb is connected with a drain terminal of the power field effect transistor Q10.
The core control circuit changes the running state of the elevator according to the processing signal of the previous stage and gives alarms of different levels. After the signal processing of the first two stages, the processed signal enters the control circuit through the node Vb. The signal is first passed through a resistor matching network and then input to the operational amplifier U2 through a resistor R15, and the amplifier U2 makes a simple signal judgment and generates a preliminary control signal. The signal is transmitted to the operational amplifier U3 through the resistor R12 and the diode D3. The amplifier U3 will generate the final control signal through negative feedback to control the current state of the elevator, when the state of the elevator monitored by the current level is "runaway", the elevator will be controlled to stop running at this time, and an alarm is given, i.e. the signal output by the resistor R24 is used to control.
Specifically, the core control circuit comprises an input port Vb, an output port Vout, 2 amplifiers U and U, a bidirectional clamping diode D, a diode D, 4 capacitors C, C and C, 11 resistors R, R and R, wherein one end of the resistor R in the core control circuit is connected with the interface No. 5 of the amplifier U, the other end of the resistor R is connected with the interface No. 2 of the amplifier U, one end of the resistor R is connected with the interface No. 2 of the amplifier U, the other end of the resistor R is connected with the interface No. 4 of the amplifier U, one end of the capacitor C is connected with a high-level VCC, the other end of the capacitor C is connected with the interface No. 4 of the amplifier U, one end of the resistor R is connected with the interface No. 1 of the amplifier U, one end of the capacitor C is connected with the interface No. 1 of the amplifier U, the other end of the capacitor C7 is connected with the interface No. 5 of the amplifier U2, and the interface No. 5 and the interface No. 4 of the amplifier U2 are grounded.
Specifically, the core control circuit includes an input port Vb, an output port Vout, 2 amplifiers U2, U3, a bidirectional clamping diode D5, diodes D3, 4 capacitors C6, C7, C8, C9, and 11 resistors R5, R9, R11, R12, R14, R15, R20, R22, R23, R24, and R27, wherein one end of the resistor R12 is connected to the interface No. 4 of the amplifier U2, the other end of the resistor R12 is connected to the anode of the diode D3, the cathode of the diode D3 is connected to one end of the resistor R23, the other end of the resistor R23 is connected to the interface No. 2 of the amplifier U3, one end of the resistor R15 is connected to the interface No. 1 of the amplifier U2, the other end of the resistor R15 is connected to one end of the resistor R15, one end of the resistor R8672 is connected to one end of the input port VCC, and the resistor R15 is connected to the high level, the other end of the resistor R22 is connected with an interface 1 of the amplifier U3, one end of the resistor R27 is connected with an interface 1 of the amplifier U3, the other end of the resistor R27 is grounded, one end of the capacitor C8 is connected with an interface 2 of the amplifier U3, the other end of the capacitor C8 is grounded, an interface 5 of the amplifier U3 is grounded, one end of the resistor R21 is connected with an interface 4 of the amplifier U3, the other end of the resistor R21 is connected with the output port Vout and one end of the bidirectional clamping diode D5, one end of the capacitor C9 is connected with an interface 4 of the amplifier U3, the other end of the capacitor C9 is grounded, and an interface 3 of the amplifier U3 is connected with a high-level VCC.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (5)
1. The utility model provides an elevator safety device of anti-runaway, includes difference sampling module circuit, threshold value monitoring circuit and core control circuit, its characterized in that: the differential sampling module circuit comprises an output port Vin, an input port Va, an amplifier U1, an inductor L1, 2 diodes D1 and D2, 2 power field effect transistors Q1 and Q4, 2 triodes Q2 and Q3, 5 capacitors C1, C2, C3, C4 and C5 respectively, and 14 resistors R1, R2, R3, R4, R6, R7, R8, R10, R13, R16, R17, R18, R19 and R21 respectively: in the differential sampling module circuit, an input port Vin is connected with the anode of a diode D1, a No. 5 interface of an amplifier U1 is grounded, one end of a resistor R21 is connected with a No. 1 interface of the amplifier U1, the other end of the resistor R21 is grounded, one end of a resistor R13 is connected with a No. 2 interface of an amplifier U1, the other end of the resistor R13 is respectively connected with one end of a capacitor C5, one end of a resistor R7 and one end of a resistor R18, the other end of a capacitor C5 is connected with a No. 4 interface of the amplifier U1, the other end of a resistor R7 is connected with the source end of a power field effect transistor, the other end of the resistor R18 is grounded, a No. 3 interface of the amplifier U1 is connected with a high-level VCC, one end of a resistor R10 is connected with a high-level VCC, the other end of the resistor R10 is connected with a No. 4 interface of the amplifier U1, one end of a resistor R17 is connected with a No. 4 interface of the amplifier U1, and the other end of the resistor R17 is connected with the gate of the power field effect transistor Q4, the drain terminal of the power field effect transistor Q4 is grounded, and the source terminal of the power field effect transistor Q4 is connected with the base of the triode Q3. One end of the resistor R19 is connected with an emitter of the triode Q3, the other end of the resistor R19 is grounded, a collector of the triode Q3 is connected with a base of the triode Q2, one end of the resistor R8 is connected with an emitter of the triode Q2, and the other end of the resistor R8 is connected with a base of the triode Q2.
2. The anti-runaway elevator safety device of claim 1, wherein: the differential sampling module circuit comprises an output port Vin, an input port Va, an amplifier U1, an inductor L1, 2 diodes D1 and D2, 2 power field effect transistors Q1 and Q4, 2 triodes Q2 and Q3, 5 capacitors respectively including C1, C2, C3, C4 and C5, and 14 resistors including R1, R1 and R1, wherein one end of the resistor R1 in the differential sampling module circuit is connected with a collector of the triode Q1, the other end of the resistor R1 is connected with an emitter of the triode Q1, one end of the resistor R1 is connected with a cathode of the diode D1, the other end of the resistor R1 is connected with an emitter of the triode Q1, one end of the resistor R1 is connected with a cathode of the resistor D1, and the emitter of the resistor R1 is connected with an emitter of the diode Q1, the collector of the triode Q2 is connected with a high-level VCC, one end of an inductor L1 is connected with the high-level VCC, the other end of the inductor L1 is connected with the drain of a power field effect transistor Q1, one end of a resistor R6 is connected with the drain of the power field effect transistor Q1, the other end of a resistor R6 is connected with the interface No. 1 of an amplifier U1, one end of a capacitor C4 is connected with the power field effect transistor grid, the other end of a capacitor C4 is connected with the source of the power field effect transistor, one end of a capacitor C1 is connected with the high-level VCC, the other end of the capacitor C1 is grounded, one end of a capacitor C2 is connected with the high-level VCC, the other end of the capacitor C2 is grounded, one end of a capacitor C3 is connected with the high-level VCC, the other end of the capacitor C3 is grounded, the anode of a diode D1 is connected with the emitter of the triode Q3, one end of the resistor R16 is connected with the cathode of a diode D2, and the other end of a resistor R16 is connected with the input port Va.
3. The anti-runaway elevator safety device of claim 1, wherein: the threshold monitoring circuit comprises an input port Va, an output port Vb, 3 power field effect transistors Q6, Q10 and Q11 respectively, 2 triodes Q5 and Q9, 4 field effect transistors Q7, Q8, Q12 and Q13 respectively, 9 resistors R25, R26, R28, R29, R30, R31, R32, R33 and R34 respectively, 2 capacitors C10 and C11 respectively, wherein in the threshold monitoring circuit, an emitter of the triode Q5 is connected with a high-level VCC, one end of the resistor R26 is connected with the high-level VCC, the other end of the resistor R26 is connected with a base of the triode Q5, one end of the resistor R30 is connected with a base of the triode Q5, the other end of the resistor R30 is connected with one end of a resistor R31 and a drain of the field effect transistor Q7 respectively, the other end of the resistor R31 is connected with a collector of the transistor Q31, one end of the resistor R31 and one end of the resistor R31, the other end of the resistor R25 is connected with the drain terminal of the power field effect transistor Q6, the gate of the field effect transistor Q7 is connected with the drain terminal of the power field effect transistor Q11, the source terminal of the power field effect transistor Q11 is grounded, one end of the resistor R33 is connected with the gate of the power field effect transistor Q11, the other end of the resistor R33 is grounded, the source terminal of the field effect transistor Q7 is connected with the gate of the field effect transistor Q13 and the drain terminal of the field effect transistor Q13, and the drain terminal of the field effect transistor Q8 is connected with the source terminal of the field effect transistor Q12, the drain terminal of the field effect transistor Q13, the gate of the field effect transistor Q12 and the gate of the field effect transistor Q13.
4. The anti-runaway elevator safety device of claim 1, wherein: the threshold monitoring circuit comprises an input port Va, an output port Vb, 3 power field effect transistors Q6, Q6 and Q6 respectively, 2 triodes Q6 and Q6 respectively, 4 field effect transistors Q6, Q6 and Q6 respectively, 9 resistors R6, and 2 capacitors C6 and C6 respectively, wherein the design of the field effect transistor Q6 in the threshold monitoring circuit is connected with the emitter of the triode Q6, the drain terminal of the field effect transistor Q6 is grounded, the source terminal of the field effect transistor Q6 is grounded, one end of the resistor R6 is connected with the base of the triode Q6, the other end of the resistor R6 is grounded, the collector of the triode Q6 is grounded, one end of the capacitor C6 is connected with the gate of the power field effect transistor Q6, the positive electrode VCC of the diode D6 is connected with the high-level of the power field effect transistor 6, and the grid of the power field effect transistor Q6 is connected with the high-level. One end of a capacitor C10 is connected with a drain terminal of a field effect transistor Q8, the other end of a capacitor C10 is connected with a gate of a power field effect transistor Q6, one end of a resistor R28 is connected with a high-level VCC, the other end of a resistor R28 is connected with a resistor R32 and a drain terminal of the power field effect transistor Q6 respectively, the other end of the resistor R32 is connected with a drain terminal of a power field effect transistor Q10, a source terminal of the power field effect transistor Q10 is grounded, a gate of a power field effect transistor Q10 is connected with a source terminal of the power field effect transistor Q6 and a drain terminal of the field effect transistor Q8 respectively, an input port Va is connected with a gate of the power field effect transistor Q11, and an output port Vb is connected with a drain terminal of the power field effect transistor Q10.
5. The anti-runaway elevator safety device of claim 1, wherein: the core control circuit comprises an input port Vb, an output port Vout, 2 amplifiers U and U, a bidirectional clamping diode D, a diode D, 4 capacitors C, C and C respectively, 11 resistors R, R and R respectively, wherein one end of the resistor R in the core control circuit is connected with the No. 5 interface of the amplifier U, the other end of the resistor R is connected with the No. 2 interface of the amplifier U, one end of the resistor R is connected with the No. 2 interface of the amplifier U, the other end of the resistor R is connected with the No. 4 interface of the amplifier U, one end of the capacitor C is connected with a high-level VCC, the other end of the capacitor C is connected with the No. 4 interface of the amplifier U, one end of the resistor R is connected with the high-level VCC, the other end of the resistor R is connected with the No. 1 interface of the amplifier U, one end of the capacitor C is connected with the No. 1 interface of the amplifier U, the other end of the capacitor C7 is connected with the interface No. 5 of the amplifier U2, and the interface No. 5 and the interface No. 4 of the amplifier U2 are grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Address after: No. 18 Xinta Jinshen Road, Lili Town, Wujiang District, Suzhou City, Jiangsu Province, 215200 Patentee after: Xini Electromechanical Group Co.,Ltd. Address before: 311200 west side of Yangcheng Avenue, Nanyang Street Economic and Technological Development Zone, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee before: SYNEY ELECTRIC (HANGZHOU) CO.,LTD. |