CN212799133U - Elevator control circuit and elevator control system - Google Patents
Elevator control circuit and elevator control system Download PDFInfo
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- CN212799133U CN212799133U CN202020714371.7U CN202020714371U CN212799133U CN 212799133 U CN212799133 U CN 212799133U CN 202020714371 U CN202020714371 U CN 202020714371U CN 212799133 U CN212799133 U CN 212799133U
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Abstract
The utility model provides an elevator control circuit and elevator control system belongs to the elevator control field. The circuit includes: the primary driving device, the optocoupler, the secondary driving device and the relay are sequentially connected; the primary driving device receives a control signal of a first voltage and outputs a high-level signal to the optical coupler; the optical coupler is controlled by a high level signal to enable the secondary driving device to form a passage and enable the relay to be electrified at a second voltage; the second voltage is greater than the first voltage.
Description
Technical Field
The disclosure relates to the field of elevator control, in particular to an elevator control circuit and an elevator control system.
Background
An elevator control circuit is a circuit for controlling the operation of an elevator. The elevator control circuit converts a control signal input by a user into control over the relay, so that the relay controls the lifting of the elevator to start and stop.
At present, elevator control circuit's circuit is comparatively complicated, and there is mutual interference inside the circuit, buries down hidden danger for elevator control circuit's security.
SUMMERY OF THE UTILITY MODEL
The embodiment of the disclosure provides an elevator control circuit and an elevator control system, the elevator control circuit is simple in circuit structure, interference isolation can be performed in the circuit, and the safety of the elevator control circuit is guaranteed. The technical scheme is as follows:
the embodiment of the disclosure provides an elevator control circuit, which comprises a primary driving device, an optical coupler, a secondary driving device and a relay, wherein the primary driving device, the optical coupler, the secondary driving device and the relay are sequentially connected;
the primary driving device receives a control signal of a first voltage and outputs a high-level signal to the optical coupler;
the optical coupler is controlled by the high-level signal to enable the secondary driving device to form a passage and enable the relay to be electrified at a second voltage;
the second voltage is greater than the first voltage.
Optionally, the primary driving device includes:
the device comprises a first power signal end, a main control chip and a control sub-circuit;
the master control chip is provided with a control signal output end, the control sub-circuit comprises a first triode and a resistor, and the optocoupler is provided with a first input end and a second input end;
the base electrode of the first triode is electrically connected with the control signal output end of the main control chip, the collector electrode of the first triode is electrically connected with the first power signal end through the resistor, and the emitter electrode of the first triode is grounded;
the first input end of the optical coupler is electrically connected between the resistor and the collector of the first triode, and the second input end of the optical coupler is grounded
Optionally, the secondary drive device comprises:
a second power signal terminal and a driving sub-circuit;
the optical coupler is provided with a first output end and a second output end, the driving sub-circuit comprises a second triode and a diode, and the relay is provided with a first input end and a second input end;
a first output end of the optocoupler is electrically connected with a first input end of the relay, and a second output end of the optocoupler is electrically connected with a base electrode of the second triode;
the collector of the second triode is respectively electrically connected with the anode of the diode and the second input end of the relay, the emitter of the second triode is grounded, and the cathode of the diode is respectively electrically connected with the first input end of the relay and the second power signal end.
Optionally, the main control chip further includes a microphone array, a wireless transceiver unit and a processing unit;
the processing unit is respectively connected with the microphone array, the wireless transceiving unit and the control signal output end in an electric mode, and the wireless transceiving unit is also used for being in wireless connection with a wireless terminal.
Optionally, the processing unit of the main control chip is further configured to be electrically connected to a feedback signal output terminal of the elevator.
Optionally, the first transistor and the second transistor are any one of the following types: MMBT3904, 2SC 4231.
Optionally, the diode is a 1N4007 type diode.
Optionally, the control sub-circuit further includes a first voltage-dividing resistor and a second voltage-dividing resistor, the first voltage-dividing resistor is electrically connected between the control signal output terminal and the base of the first transistor, one end of the second voltage-dividing resistor is electrically connected between the first voltage-dividing resistor and the base of the first transistor, and the other end of the second voltage-dividing resistor is grounded.
Optionally, the driving sub-circuit further includes a third voltage dividing resistor and a fourth voltage dividing resistor, the third voltage dividing resistor is electrically connected between the second output end of the optocoupler and the base of the second transistor, one end of the fourth voltage dividing resistor is electrically connected between the third voltage dividing resistor and the base of the second transistor, and the other end of the fourth voltage dividing resistor is grounded.
Optionally, the driving sub-circuit further includes a filter capacitor, one capacitor plate of the filter capacitor is electrically connected between the second power signal terminal and the cathode of the diode, and the other capacitor plate of the filter capacitor is grounded.
Optionally, the optocoupler is a PC817, TLP620 or TLP321 type optocoupler.
Optionally, the relay is an HFD17, HFD23, or SRE-05VDC-SL-2C type relay.
The disclosed embodiment provides an elevator control system comprising an elevator control circuit as set forth in any of the preceding claims;
and the Bluetooth circuit is electrically connected with the elevator control circuit and is connected with a wireless terminal in a Bluetooth mode.
The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:
the control signal of the first voltage input by a user is converted into a high-level signal through the primary driving device, then the high-level signal is output to the optical coupler, the optical coupler is controlled to be switched on, the switching-on of the optical coupler is converted into the control of the secondary driving device, the secondary driving device is enabled to form a passage, and the relay is controlled to be powered on to work. This circuit structure is simple, simultaneously owing to adopted the opto-coupler, the opto-coupler keeps apart one-level drive arrangement and second grade drive arrangement, avoids taking place to disturb between the two, has guaranteed elevator control circuit's security.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a block diagram of an elevator control circuit provided by an embodiment of the present disclosure;
fig. 2 is a block diagram of an elevator control circuit provided by an embodiment of the present disclosure;
fig. 3 is a circuit diagram of an elevator control circuit provided by an embodiment of the present disclosure;
fig. 4 is a block diagram of a main control chip provided in the embodiment of the present disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
Fig. 1 is a block diagram of an elevator control circuit provided in an embodiment of the present disclosure. Referring to fig. 1, the elevator control circuit includes:
the device comprises a primary driving device 10, an optical coupler (optical coupler) 20, a secondary driving device 30 and a relay 40 which are connected in sequence;
the primary driving device 10 receives a control signal of a first voltage and outputs a high-level signal to the optocoupler 20;
the optical coupler 20 is controlled by a high-level signal to enable the secondary driving device 30 to form a passage, and enable the relay 40 to be electrified at a second voltage;
the second voltage is greater than the first voltage.
In the embodiment of the disclosure, a control signal of a first voltage input by a user is converted into a high-level signal through a primary driving device, and then the high-level signal is output to an optical coupler to control the conduction of the optical coupler, and the conduction of the optical coupler is converted into the control of a secondary driving device, so that the secondary driving device forms a passage to control the electrification work of a relay. This circuit structure is simple, simultaneously owing to adopted the opto-coupler, the opto-coupler keeps apart one-level drive arrangement and second grade drive arrangement, avoids taking place to disturb between the two, has guaranteed elevator control circuit's security.
It should be noted that the above description is made by taking the on relay as an example. When the primary driving device 10 receives the control signal of the third voltage, a low level signal is output to the optical coupler 20, and the optical coupler 20 is controlled by the low level signal, so that the secondary driving device 30 cannot form a path, and finally the relay 40 cannot be powered on to work.
Fig. 2 is a block diagram of an elevator control circuit provided by an embodiment of the present disclosure. Referring to fig. 2, the primary driving apparatus 10 includes: the main control chip comprises a first power supply signal terminal VCC1, a main control chip 100 and a control sub-circuit 200. The secondary drive device 30 includes: a second power signal terminal VCC2 and a driving sub-circuit 300. The relay 40 is electrically connected to the elevator 50, thereby controlling the operation of the elevator 50.
Fig. 3 is a circuit diagram of an elevator control circuit provided in an embodiment of the present disclosure. With reference to figure 3 of the drawings,
the main control chip 100 has a control signal output terminal 101, the control sub-circuit 200 includes a first transistor Q1 and a resistor R2, the optocoupler 20 has a first input terminal 21, a second input terminal 22, a first output terminal 23 and a second output terminal 24, the driving sub-circuit 300 includes a second transistor Q2 and a diode D2, and the relay 40 has a first input terminal 41 and a second input terminal 42;
the base electrode of the first triode Q1 is electrically connected with the control signal output end 101 of the main control chip 100, the collector electrode of the first triode Q1 is electrically connected with the first power supply signal end VCC1 through the resistor R2, and the emitter electrode of the first triode Q1 is grounded;
a first input end 21 of the optocoupler 20 is electrically connected between the resistor R2 and a collector of the first triode Q1, a second input end 22 of the optocoupler 20 is grounded, a first output end 23 of the optocoupler 20 is electrically connected with a first input end 41 of the relay 40, and a second output end 24 of the optocoupler 20 is electrically connected with a base of the second triode Q2;
the collector of the second triode Q2 is respectively connected with the anode of the diode D2 and the second input terminal 42 of the relay 40, the emitter of the second triode Q2 is grounded, and the cathode of the diode D2 is respectively connected with the first input terminal 41 of the relay 40 and the second power signal terminal VCC 2.
In the embodiment of the disclosure, the control signal input by the user is converted into the level signal through the main control chip and then output to the control sub-circuit, the triode of the control sub-circuit controls the on and off of the optocoupler, and the on and off of the optocoupler are converted into the control of the triode in the control sub-circuit, so that the triode and the diode of the control sub-circuit can control the work of the relay. This circuit structure is simple, simultaneously owing to adopted the opto-coupler, the opto-coupler keeps apart control sub-circuit and drive sub-circuit, avoids taking place to disturb between the two, has guaranteed elevator sub-circuit's security.
It should be noted that, in the circuit shown in fig. 3, the first transistor Q1 and the second transistor Q2 are NPN-type transistors, and in other implementation manners of the embodiment of the present disclosure, the first transistor Q1 and the second transistor Q2 may also be PNP-type transistors, which is not limited in this application.
The detailed operation of the circuit will be briefly described with reference to fig. 3:
when the main control chip 100 receives a user command (wireless input, input through an elevator control panel, voice input, or the like), the main control chip 100 converts a control signal carried by the command into a high-low level signal.
When main control chip 100 output is the low level signal, Q1 disconnection, 20 first input 21 input voltage of opto-coupler is the high level this moment, and opto-coupler 20 switches on, and the second output 24 output high level of opto-coupler 20, and Q2 switches on this moment, and relay 40's first input 41 is the high level, and relay 40's second input 42 becomes the low level, and relay 40 switches on work.
When main control chip 100 output is high level signal, Q1 switches on, and 20 first input 21 input voltage of opto-coupler reduces this moment, and opto-coupler 20 cuts off, and the second output 24 output low level of opto-coupler 20, Q2 disconnection this moment, and the first input 41 of relay 40 is the high level, and the second input 42 of relay 40 is the high level, and relay 40 does not work.
During the above operation, D2 can prevent the relay 40 from reverse conduction, and thus, it can protect the relay 40.
Fig. 4 is a block diagram of a main control chip provided in the embodiment of the present disclosure. Referring to fig. 4, the main control chip 100 further includes a microphone array 102, a wireless transceiver unit 103, and a processing unit 104;
the processing unit 104 is electrically connected to the microphone array 102, the wireless transceiver unit 103 and the control signal output terminal 101, and the wireless transceiver unit 103 is further configured to be wirelessly connected to a wireless terminal.
In the disclosed embodiment, user commands can be input through voice input and wireless terminals in addition to through a conventional elevator control panel. For example, the user voice command is received by the microphone array 102, and then converted into a control signal with high and low levels by the processing unit 104, and then output to the control sub-circuit to control the operation of the elevator.
For another example, the user can send an instruction to the wireless transceiver 103 through the wireless terminal, so that the processing unit 104 can convert the instruction into a high and low level control signal, thereby controlling the operation of the elevator. The wireless terminal is adopted to send the instruction, so that the elevator can be controlled under the condition that a user cannot contact the elevator control panel or is far away from the microphone array. For example, under the scene that the number of people is more in the elevator, the floor selection control time of the elevator is longer by means of conventional elevator control panel control or voice control, the floor of the elevator is easy to miss, and the floor of the elevator can be selected in a wireless mode under the condition that the number of people is more in the elevator. For another example, in the case of a failure in a conventional elevator control panel control or voice control, the user can also select his floor by wireless means.
Illustratively, the wireless terminal may be a mobile phone, a tablet computer, or the like. The wireless terminal can be wirelessly connected with the wireless transceiving unit 103 through bluetooth, wireless hi-fi and other modes. An application program (APP) can be installed in the wireless terminal to realize connection with an elevator control circuit and sending of instructions.
Optionally, the processing unit 104 of the main control chip 100 is further configured to be electrically connected to a feedback signal output terminal of the elevator. The processing unit 104 can send the received feedback signal of the elevator to the wireless terminal through the wireless transceiving unit 103, and the wireless terminal can display the state of the elevator in the APP based on the feedback signal, for example, display whether the elevator works normally, display the floor where the elevator is currently located, and the like.
Illustratively, the optocoupler 20 in implementations of the present disclosure may be a PC817 type optocoupler, a TLP620 type optocoupler or a TLP321 type optocoupler.
Illustratively, the relay 40 in the practice of the present disclosure may be an electromagnetic relay, such as a HFD17 type relay, a HFD23 type relay, or an SRE-05VDC-SL-2C type relay.
For example, the first transistor Q1 and the second transistor Q2 in implementations of the present disclosure may be any of the following types: an MMBT3904 type triode and a 2SC4231 type triode.
Illustratively, the diode D2 in implementations of the present disclosure may be a 1N4007 type diode.
Referring to fig. 3 again, the control sub-circuit 200 may further include a first voltage-dividing resistor R1 and a second voltage-dividing resistor R46, wherein the first voltage-dividing resistor R1 is electrically connected between the control signal output terminal 101 and the base of the first transistor Q1, one end of the second voltage-dividing resistor R46 is electrically connected between the first voltage-dividing resistor R1 and the base of the first transistor Q1, and the other end of the second voltage-dividing resistor R46 is grounded.
The control signal output by the main control chip 100 is divided by the first voltage dividing resistor R1 and the second voltage dividing resistor R46, so that the control of the first triode Q1 is realized.
Referring to fig. 3 again, the driving sub-circuit 300 may further include a third voltage dividing resistor R44 and a fourth voltage dividing resistor R45, the third voltage dividing resistor R44 is electrically connected between the second output terminal 24 of the optocoupler 20 and the base of the second transistor Q2, one end of the fourth voltage dividing resistor R45 is electrically connected between the third voltage dividing resistor R44 and the base of the second transistor Q2, and the other end of the fourth voltage dividing resistor R45 is grounded.
The signal output by the second output terminal 24 of the optical coupler 20 is divided by the third voltage dividing resistor R44 and the fourth voltage dividing resistor R45, so as to control the second transistor Q2.
Referring again to fig. 3, the driving sub-circuit 300 may further include a filter capacitor C71, one capacitor plate of the filter capacitor C71 is electrically connected between the second power signal terminal VCC2 and the cathode of the diode D2, and the other capacitor plate of the filter capacitor C71 is grounded.
The second power signal terminal VCC2 is filtered through the filter capacitor C71, noise components are filtered, and output signals are smoother, so that the stability of the elevator control circuit is improved.
In the embodiment of the present disclosure, the voltage level provided by the first power signal terminal VCC1 and the second power signal terminal VCC2 may be a dc high level, and the voltage level of the signal provided by the first power signal terminal VCC1 and the voltage level of the signal provided by the second power signal terminal VCC2 may be set according to actual needs, which is not limited in this application. The voltage and/or current of the signals provided by the first power signal terminal VCC1 and the second power signal terminal VCC2 may be the same or different.
In the embodiment of the present disclosure, the resistances of the resistor R2, the first voltage-dividing resistor R1, the second voltage-dividing resistor R46, the third voltage-dividing resistor R44, and the fourth voltage-dividing resistor R45 may be set according to actual needs, which is not limited in this application. The resistances of the resistor R2, the first voltage-dividing resistor R1, the second voltage-dividing resistor R46, the third voltage-dividing resistor R44 and the fourth voltage-dividing resistor R45 may be the same or different.
In the embodiment of the present disclosure, the size of the filter capacitor C71 may be set according to actual needs, which is not limited in this application.
The disclosed embodiment provides an elevator control system, which includes:
an elevator control circuit as shown in any one of fig. 1 to 3;
and the Bluetooth circuit is electrically connected with the elevator control circuit and is connected with a wireless terminal in a Bluetooth mode.
In the disclosed embodiment, the wireless terminal can establish a bluetooth connection with the bluetooth circuit to send a control signal to the elevator control circuit to control the operation of the elevator. If, under the scene that the number of people is more in the elevator, rely on conventional elevator control panel control, or speech control to realize that the floor selection control time to the elevator is longer, easily miss own floor, just can select own floor under the condition that the number of people is more in the elevator through the bluetooth mode. For another example, under the condition of the control of a conventional elevator control panel or the fault of voice control, the user can still realize floor selection in a Bluetooth mode.
In the structure of the main control chip shown in fig. 4, the main control chip 100 may include a wireless transceiver unit, and the wireless transceiver unit may include the aforementioned bluetooth circuit, that is, the bluetooth circuit is integrated in the main control chip 100, so as to implement an electrical connection with the entire elevator control circuit.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.
Claims (10)
1. An elevator control circuit is characterized by comprising a primary driving device (10), an optical coupler (20), a secondary driving device (30) and a relay (40) which are sequentially connected;
the primary driving device (10) receives a control signal of a first voltage and outputs a high-level signal to the optical coupler (20);
the optical coupler (20) is controlled by the high-level signal to enable the secondary driving device (30) to form a passage, and enable the relay (40) to be electrified at a second voltage;
the second voltage is greater than the first voltage.
2. Elevator control circuit according to claim 1, characterized in that the primary drive means (10) comprise:
the power supply circuit comprises a first power supply signal terminal (VCC1), a main control chip (100) and a control sub-circuit (200);
the main control chip (100) is provided with a control signal output end (101), the control sub-circuit (200) comprises a first triode (Q1) and a resistor (R2), and the optocoupler (20) is provided with a first input end (21) and a second input end (22);
the base electrode of the first triode (Q1) is electrically connected with the control signal output end (101) of the main control chip (100), the collector electrode of the first triode (Q1) is electrically connected with the first power supply signal end (VCC1) through the resistor (R2), and the emitter electrode of the first triode (Q1) is grounded;
the first input end (21) of the optical coupler (20) is electrically connected between the resistor (R2) and the collector electrode of the first triode (Q1), and the second input end (22) of the optical coupler (20) is grounded.
3. Elevator control circuit according to claim 2, characterized in that the secondary drive means (30) comprise:
a second power supply signal terminal (VCC2) and a driving sub-circuit (300);
the optical coupler (20) is provided with a first output end (23) and a second output end (24), the driving sub-circuit (300) comprises a second triode (Q2) and a diode (D2), and the relay (40) is provided with a first input end (41) and a second input end (42)
A first output end (23) of the optocoupler (20) is electrically connected with a first input end (41) of the relay (40), and a second output end (24) of the optocoupler (20) is electrically connected with a base electrode of the second triode (Q2);
the collector of the second triode (Q2) respectively with the positive pole of diode (D2) and the second input (42) electricity of relay (40) are connected, the projecting pole ground of second triode (Q2), the negative pole of diode (D2) respectively with the first input (41) of relay (40) and the second power signal end (VCC2) electricity is connected.
4. The elevator control circuit according to claim 2, characterized in that the main control chip (100) further comprises a microphone array (102), a wireless transceiver unit (103) and a processing unit (104);
the processing unit (104) is respectively electrically connected with the microphone array (102), the wireless transceiving unit (103) and the control signal output end (101), and the wireless transceiving unit (103) is also used for being wirelessly connected with a wireless terminal.
5. Elevator control circuit according to claim 2, characterized in that the processing unit (104) of the main control chip (100) is also used for electrical connection with the feedback signal output of the elevator.
6. The elevator control circuit of claim 3, wherein the first transistor (Q1) and the second transistor (Q2) are each any of the following types: MMBT3904, 2SC4231, and the diode (D2) is a 1N4007 type diode.
7. The elevator control circuit according to claim 2, wherein the control sub-circuit (200) further comprises a first voltage-dividing resistor (R1) and a second voltage-dividing resistor (R46), the first voltage-dividing resistor (R1) is electrically connected between the control signal output terminal (101) and the base of the first transistor (Q1), one end of the second voltage-dividing resistor (R46) is electrically connected between the first voltage-dividing resistor (R1) and the base of the first transistor (Q1), and the other end of the second voltage-dividing resistor (R46) is grounded.
8. The elevator control circuit of claim 3, wherein the drive sub-circuit (300) further comprises a third voltage dividing resistor (R44) and a fourth voltage dividing resistor (R45), the third voltage dividing resistor (R44) is electrically connected between the second output terminal (24) of the optocoupler (20) and the base of the second transistor (Q2), one end of the fourth voltage dividing resistor (R45) is electrically connected between the third voltage dividing resistor (R44) and the base of the second transistor (Q2), and the other end of the fourth voltage dividing resistor (R45) is grounded.
9. The elevator control circuit according to claim 3, wherein the driving sub-circuit (300) further comprises a filter capacitor (C71), one capacitor plate of the filter capacitor (C71) is electrically connected between the second power signal terminal (VCC2) and the cathode of the diode (D2), and the other capacitor plate of the filter capacitor (C71) is grounded.
10. An elevator control system, characterized in that the elevator control system comprises:
the elevator control circuit of any of claims 1 to 9;
and the Bluetooth circuit is electrically connected with the elevator control circuit and is connected with a wireless terminal in a Bluetooth mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020714371.7U CN212799133U (en) | 2020-04-30 | 2020-04-30 | Elevator control circuit and elevator control system |
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| CN202020714371.7U CN212799133U (en) | 2020-04-30 | 2020-04-30 | Elevator control circuit and elevator control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113744736A (en) * | 2021-09-08 | 2021-12-03 | 北京声智科技有限公司 | Command word recognition method and device, electronic equipment and storage medium |
| CN114743831A (en) * | 2022-03-30 | 2022-07-12 | 中国船舶重工集团公司第七0七研究所九江分部 | Relay control enabling circuit |
-
2020
- 2020-04-30 CN CN202020714371.7U patent/CN212799133U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113744736A (en) * | 2021-09-08 | 2021-12-03 | 北京声智科技有限公司 | Command word recognition method and device, electronic equipment and storage medium |
| CN113744736B (en) * | 2021-09-08 | 2023-12-08 | 北京声智科技有限公司 | Command word recognition method and device, electronic equipment and storage medium |
| CN114743831A (en) * | 2022-03-30 | 2022-07-12 | 中国船舶重工集团公司第七0七研究所九江分部 | Relay control enabling circuit |
| CN114743831B (en) * | 2022-03-30 | 2024-01-02 | 中国船舶重工集团公司第七0七研究所九江分部 | Relay control enabling circuit |
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