CN112047210A - Control circuit and elevator outbound control device - Google Patents
Control circuit and elevator outbound control device Download PDFInfo
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- CN112047210A CN112047210A CN202010950346.3A CN202010950346A CN112047210A CN 112047210 A CN112047210 A CN 112047210A CN 202010950346 A CN202010950346 A CN 202010950346A CN 112047210 A CN112047210 A CN 112047210A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/02—Control systems without regulation, i.e. without retroactive action
- B66B1/06—Control systems without regulation, i.e. without retroactive action electric
- B66B1/14—Control systems without regulation, i.e. without retroactive action electric with devices, e.g. push-buttons, for indirect control of movements
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
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Abstract
A control circuit and an elevator outbound control device, the control circuit comprises: an input end; a power supply terminal; a ground terminal; a first node electrically connected to the input terminal; the first resistor device and the first light-emitting component are sequentially connected in series between a first node and a grounding end; the first charging and discharging circuit is connected with the first light-emitting component in parallel; the second charge and discharge circuit is electrically connected between the first node and the grounding end; the second light-emitting component and the switching device are sequentially connected between the power supply end and the grounding end in series, wherein the switching device comprises a gate pole, a first pole and a second pole, the first pole is electrically connected with the second light-emitting component, and the second pole is electrically connected with the grounding end; and the comparator comprises a first input end, a second input end and an output end, the first input end is electrically connected with the first charging and discharging circuit, the second input end is electrically connected with the second charging and discharging circuit, the output end is electrically connected with the gate electrode, and the second charging and discharging circuit is higher in charging speed and lower in discharging speed than the first charging and discharging circuit.
Description
Technical Field
The disclosure relates to the technical field of elevator control, in particular to a control circuit and an elevator outbound control device.
Background
Elevators are increasingly widely used in high-rise buildings such as residential buildings and commercial buildings, and when an elevator is in different states, an outbound button or an outbound indicator light on a panel usually has different light-emitting effects, such as light-emitting, non-light-emitting, or light-emitting in different colors.
Disclosure of Invention
Some embodiments of the present disclosure provide a control circuit, comprising:
an input terminal for inputting a control signal;
a power supply terminal for supplying a power supply voltage;
a ground terminal for providing a ground voltage;
a first node electrically connected to the input terminal;
the first resistor device and the first light-emitting component are sequentially connected in series between the first node and the grounding end;
the first charging and discharging circuit is connected with the first light-emitting assembly in parallel;
a second charge/discharge circuit electrically connected between the first node and the ground terminal;
the second light-emitting component and the switching device are sequentially connected between the power supply end and the grounding end in series, wherein the switching device comprises a gate pole, a first pole and a second pole, the first pole is electrically connected with the second light-emitting component, and the second pole is electrically connected with the grounding end; and
the comparator comprises a first input end, a second input end and an output end, wherein the first input end is electrically connected with the first charge-discharge circuit, the second input end is electrically connected with the second charge-discharge circuit, the output end is electrically connected with the gate pole and is used for controlling the conduction of the switch device,
the second charging and discharging circuit is higher in charging speed and lower in discharging speed than the first charging and discharging circuit.
In some embodiments, the first light emitting assembly emits light of a different color than the second light emitting assembly.
In some embodiments, the first charge and discharge circuit includes:
and the first capacitor and the second resistor device are connected with the first light-emitting component in parallel between a second node and the grounding terminal, wherein the second node is positioned between the first resistor device and the first light-emitting component.
In some embodiments, the second charge and discharge circuit includes:
a third resistor device and a fourth resistor device connected in series between the first node and the ground terminal in sequence; and
a second capacitor arranged in parallel with the third and fourth resistance means.
In some embodiments, the first input terminal is electrically connected to the second node through a first rectifying diode, an anode of the first rectifying diode is electrically connected to the first input terminal, a cathode of the first rectifying diode is electrically connected to the second node, and the first input terminal is electrically connected to the power supply terminal through a sixth resistor, and the second input terminal is electrically connected to a third node between a third resistor device and a fourth resistor device.
In some embodiments, the control circuit further comprises:
and the fifth resistor device, the second light-emitting component and the switch device are sequentially connected in series between the power supply end and the grounding end.
In some embodiments, the control circuit further comprises:
a second rectifying diode connected in series between the first node and the second capacitor, a positive electrode of the second rectifying diode being electrically connected to the first node, and a negative electrode of the second rectifying diode being electrically connected to the second capacitor.
In some embodiments, the comparator is an open-circuit output comparator, the control circuit further comprises a seventh resistor device and an eighth resistor device, the output of the comparator is electrically connected to the power supply terminal through the seventh resistor device, and the gate is electrically connected to the ground terminal through the eighth resistor device.
In some embodiments, C1 > C2, and C1R 2 < C2 (R3+ R4)
Where C1 and C2 are capacitance values of the first capacitor and the second capacitor, respectively, and R2, R3, and R4 are resistance values of the second resistance device, the third resistance device, and the fourth resistance device, respectively.
In some embodiments, the first light emitting assembly is a light emitting diode or a group of light emitting diodes, and the second light emitting assembly is a light emitting diode or a group of light emitting diodes.
In some embodiments, when the control signal input by the input terminal is at a low level, neither the first light emitting assembly nor the second light emitting assembly emits light;
when the control signal input by the input end is at a high level, the first light-emitting component emits light, and the second light-emitting component does not emit light; and
when the control signal input by the input end is a pulse signal, the first light-emitting component does not emit light, and the second light-emitting component emits light.
In some embodiments, the control circuit further comprises:
and the filter capacitor is electrically connected between the input end and the other ground end and is configured to filter the control signal.
Some embodiments of the present disclosure provide an elevator hall call control device, the elevator hall call control device comprising:
the control circuit described in the foregoing embodiments,
the button is used for calling the elevator;
a processor electrically connected to the button and configured to output the control signal to the input of the control circuit based on a state of the button.
In some embodiments, the processor is configured to:
when the button is triggered, the control signal output by the processor is at a high level, and the elevator is in a calling state;
when the elevator calling is finished, the control signal output by the processor is a pulse signal, and the elevator is in an idle state;
when the button is not triggered within the preset time after the elevator is in the idle state, the control signal output by the processor is in a low level, and the elevator is in an energy-saving state.
Drawings
To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly described below, and it should be understood that the drawings described below relate only to some embodiments of the present disclosure, and not to limit the present disclosure, wherein:
fig. 1 is a circuit diagram of a control circuit according to some embodiments of the present disclosure;
fig. 2 is a schematic diagram of a portion of an elevator hall control generating a control signal according to some embodiments of the present disclosure.
Detailed Description
To more clearly illustrate the objects, aspects and advantages of the present disclosure, embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It is to be understood that the following description of the embodiments is intended to illustrate and explain the general concepts of the disclosure and should not be taken as limiting the disclosure. In the specification and drawings, the same or similar reference numerals refer to the same or similar parts or components. The figures are not necessarily to scale and certain well-known components and structures may be omitted from the figures for clarity.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "a" or "an" does not exclude a plurality. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", "top" or "bottom", etc. are used merely to indicate relative positional relationships, which may change when the absolute position of the object being described changes. When an element is referred to as being "on" or "under" another element, it can be "directly on" or "under" the other element or intervening elements may be present.
Some embodiments of the present disclosure provide a control circuit, comprising: an input terminal for inputting a control signal; a power supply terminal for supplying a power supply voltage; a ground terminal for providing a ground voltage; a first node electrically connected to the input terminal; the first resistor device and the first light-emitting component are sequentially connected in series between the first node and the grounding end; the first capacitor and the second resistor device are connected with the first light-emitting component in parallel between a second node and a grounding end, wherein the second node is positioned between the first resistor device and the first light-emitting component; a third resistor device and a fourth resistor device connected in series between the first node and the ground terminal in sequence; a second capacitor arranged in parallel with the third and fourth resistance means; the fifth resistance device, the second light-emitting component and the switching device are sequentially connected in series between the power supply end and the grounding end, wherein the switching device comprises a gate pole, a first pole and a second pole, the first pole is electrically connected with the second light-emitting component, and the second pole is electrically connected with the grounding end; and the comparator comprises a first input end, a second input end and an output end, wherein the first input end is electrically connected with a first node through a first rectifying diode, the anode of the first rectifying diode is electrically connected with the first input end, the cathode of the first rectifying diode is electrically connected with the second node, the first input end is electrically connected with the power supply end through a sixth resistor, the second input end is electrically connected with a third node between a third resistor device and a fourth resistor device, and the input end is electrically connected with the gate pole and used for controlling the conduction of the switching device.
The circuit device is applied to the elevator outbound control device, can complete the switching of three control states by one universal I/O input port, and saves hardware resources. The switching function of the indicator light can be realized while the I/O resources are reduced.
Fig. 1 is a circuit diagram of a control circuit according to some embodiments of the present disclosure. As shown in fig. 1, the control circuit includes an input terminal IT, a power supply terminal VCC, and a ground terminal GND. The input terminal IT is used for inputting a control signal. The control signal may be, for example, three signals of a high level, a low level, and a pulse signal. In some embodiments, the high level is 24V, the low level is 0V, and the pulse signal is a 2ms high level (24V) and a 98ms low level (0V) periodic pulse signal. The power supply terminal VCC is for supplying a power supply voltage, for example, 24V. The ground terminal is used for providing a ground voltage, for example, 0V.
As shown in fig. 1, the first node a is electrically connected to the input terminal IT, and the first resistor R1 and the first light emitting element L1 are sequentially connected in series between the first node a and the ground terminal GND. The first resistor device R1 is connected in series with the first light emitting module L1, so as to prevent the elements in the first light emitting module L1 from being damaged due to overcurrent. In some embodiments, the first resistor device R1 may be one resistor or a series of more resistors. For example, in some embodiments, as shown in fig. 1, the first resistor device R1 includes, for example, two resistors, i.e., a resistor R11 and a resistor R22. In some examples, the resistance of each resistor in the first resistor device R1 may be specifically designed according to actual situations, for example, the resistor R11 and the resistor R12 are both 510 Ω.
The first light emitting module L1 is a light emitting diode or a group of light emitting diodes, for example, the first light emitting module L1 is a light emitting diode or a series of light emitting diodes, in some embodiments, as shown in fig. 1, the first light emitting module L1 includes four series light emitting diodes, for example, and the light emitting diodes can emit light of a first color, for example, red light, and the light emitting diodes are configured to indicate a call state, for example, when the elevator is in the call state, the light emitting diodes are turned on. Among the four leds, the anode of the led closest to the first resistor R1 is connected to the resistor R12, and the cathode of the led farthest from the first resistor R1 is electrically connected to the ground GND.
As shown in fig. 1, the first capacitor C1 and the second resistor R2 are connected in parallel with the first light emitting element L1 between a second node B and a ground GND, the second node B is located between the first resistor R1 and the first light emitting element L1, and the first charge/discharge circuit is formed by the second node B and the ground GND. The first capacitor C1 and the first resistor R1 form a power-up RC circuit. The second resistor R2 is connected in parallel with the first capacitor C1, and its branch can be used as a discharging branch of the first capacitor C1. The second resistor device R2 may be one resistor or a plurality of resistors connected in series, and in this embodiment, the second resistor device R2 is one resistor, also referred to as resistor R2.
As shown in fig. 1, the third resistor device R3 and the fourth resistor device R4 are sequentially connected in series between the first node a1 and the ground GND, the second capacitor C2 is connected in parallel with the third resistor device R3 and the fourth resistor device R4, and the three devices form a second charge and discharge circuit. Each of the third resistor device R3 and the fourth resistor device R4 may be one resistor or more resistors connected in series, in this embodiment, the third resistor device R3 is one resistor, also referred to as resistor R3, and the fourth resistor device R4 is one resistor, also referred to as resistor R4. A third resistor arrangement R3 and a fourth resistor arrangement R4.
As shown in fig. 1, the fifth resistor device R5, the second light emitting element L2 and the switching device T are sequentially connected in series between the power terminal VCC and the ground terminal GND. The fifth resistor device R5 is connected in series with the second light emitting module L2, so as to prevent the elements in the second light emitting module L2 from being damaged due to overcurrent. The switching device T is, for example, a MOS transistor, specifically an N-channel MOS transistor, and includes a gate G, a first electrode, for example, a drain D and a second electrode, for example, a source S, the drain D of the N-channel MOS transistor is electrically connected to the second light emitting device, and the source S of the N-channel MOS transistor is electrically connected to a ground GND. In some embodiments, the fifth resistor device R5 may be one resistor or a series of more resistors. For example, in some embodiments, as shown in fig. 1, the fifth resistor device R5 includes, for example, two resistors, i.e., a resistor R51 and a resistor R52. In some embodiments, the resistance of each resistor in the fifth resistor device R5 may be specifically designed according to actual situations, for example, the resistor R51 and the resistor R52 are both 330 Ω. The second light emitting assembly L2 is a light emitting diode or a group of light emitting diodes, for example, the second light emitting assembly L2 is a light emitting diode or a plurality of light emitting diodes connected in series, in some embodiments, as shown in fig. 1, the second light emitting assembly L2 includes four light emitting diodes connected in series, for example, and the light emitting diodes can emit light of a second color, for example, white light. Among the four leds, the anode of the led closest to the fifth resistor R5 is connected to the resistor R52, and the cathode of the led farthest from the fifth resistor R5 is electrically connected to the drain D of the N-channel MOS transistor.
As shown in fig. 1, the comparator CU includes a first input terminal, e.g., a negative input terminal, a second input terminal, e.g., a positive input terminal, and an output terminal, the first input terminal is electrically connected to the second node B through a first rectifying diode D1, the positive terminal of the first rectifying diode D1 is electrically connected to the first input terminal, the negative terminal of the first rectifying diode D1 is electrically connected to the second node B, and the first input terminal is electrically connected to the power source terminal VCC through a sixth resistor R6. That is, the first input terminal is connected to a node E between the sixth resistor R6 and the first rectifying diode D1, which is denoted as a fourth node E, and the sixth resistor R6 is used as a pull-up resistor for providing an input voltage to the fourth node E. The sixth resistor device R6 may be one resistor or a plurality of resistors connected in series, and in this embodiment, the second resistor device R6 is one resistor, also referred to as resistor R6. The resistance of the sixth resistor device R6 can be specifically designed according to the actual situation, and the resistor R6 is, for example, 106Omega. The second input of the comparator CU is electrically connected to a third node C between the third resistor means R3 and the fourth resistor means R4. The output end of the comparator CU is electrically connected to the gate G of the N communication MOS tube. The comparator CU is configured to output a high level signal when the voltage of the second input terminal is higher than the voltage of the first input terminal, otherwise output a low level signal, where the high level signal is generally higher than the turn-on threshold voltage of the N communication MOS transistor, at which time the N communication MOS transistor is fully turned on, the second light emitting element is in a lighting state, and the low level signal is generally lower than the turn-on threshold voltage of the N communication MOS transistor, for example, 0V, at which time the N communication MOS transistor is turned off, and the second light emitting element L2 is in a turn-off state.
In some embodiments, as shown in fig. 1, the control circuit further comprises: a second rectifying diode D2 connected in series between the first node a and the second capacitor C2, wherein a positive electrode of the second rectifying diode D2 is electrically connected to the first node a, and a negative electrode of the second rectifying diode D2 is electrically connected to the second capacitor C2. The second rectifying diode D2 acts as an isolation to prevent the C2 from discharging back toward the first node a.
In some embodiments, as shown in fig. 1, the comparator CU is an open-circuit output comparator, the control circuit further includes a seventh resistor device R7 and an eighth resistor device R8, the output terminal of the comparator CU is electrically connected to the power supply terminal VCC through the seventh resistor device R7, and the gate G of the N-channel MOS transistor is electrically connected to the ground terminal GND through the eighth resistor device R8. Specifically, the seventh resistor device R7 and the eighth resistor device R8 are connected in series between the power source terminal VCC and the ground terminal GND, the output terminal of the comparator CU is electrically connected to the fifth node F between the seventh resistor device R7 and the eighth resistor device R8, and the gate G of the N communication MOS transistor is also electrically connected to the fifth node F between the seventh resistor device R7 and the eighth resistor device R8. Each of the seventh resistor device R7 and the eighth resistor device R8 may be one resistor or more resistors connected in series, in this embodiment, the seventh resistor device R7 is one resistor, also referred to as resistor R7, and the eighth resistor device R8 is one resistor, also referred to as resistor R8. The seventh resistor device R7 is a pull-up resistor, and the voltage division with the eighth resistor device R8 can make the output of the comparator CU output a high-level signal with a substantially stable voltage value. The resistance values of the seventh resistor device R7 and the eighth resistor device R8 can be specifically designed according to actual situations, and the seventh resistor device R7 is 10 for example6Ω, and an eighth resistance means R8 of, for example, 4.7 × 105Omega. At this time, the output high level signal of the output end of the comparator CU is basically stabilized at about 7-8V, so that the N communication MOS tube is started when the output end of the comparator CU outputs the high level signal.
In some embodiments, in the above control circuit, when the control signal inputted from the input terminal IT is at a low level, for example, 0V, neither the first light emitting element L1 nor the second light emitting element L2 emits light; when the control signal inputted from the input terminal IT is at a high level, for example, 24V, the first light emitting element L1 emits light, and the second light emitting element L2 does not emit light; and when the control signal inputted from the input terminal IT is a pulse signal, for example, a periodic pulse signal of 2ms high level (24V) and 98ms low level (0V), the first light emitting element L1 does not emit light, and the second light emitting element L2 emits light.
In some embodiments, C1 > C2, and C1 × R2 < C2 (R3+ R4) wherein C1 and C2 are capacitance values of first capacitor C1 and second capacitor C2, respectively, and R2, R3 and R4 are capacitance values of second resistance means R2, third resistance means R3 and fourth capacitance means R4, respectively. When the control signal inputted from the input terminal IT is a pulse signal, for example, a periodic pulse signal with 2ms high level (24V) and 98ms low level (0V), the voltage rising edge of the first node a is pulled to 24V steeply, the power-up RC circuit slows down the voltage rising edge at the second node B, and due to the arrangement of the first rectifier diode D1, specifically, the anode of the first rectifier diode D1 is electrically connected to the fourth node E, the cathode of the first rectifier diode D1 is electrically connected to the second node B, and the voltage at the fourth node E is always 0.7V greater than the voltage at the second node B, that is, the voltage rising edge at the fourth node E is slowed down at the same time. Until the first capacitor C1 is completely charged, the voltage at the fourth node E may reach the peak voltage. At the falling edge of the pulse signal, the voltage on the first capacitor C1 can be discharged through the discharging branch where the second resistor device R2 is located, and the discharging speed is faster, i.e. the falling edge of the voltage at the fourth node E is steeper.
And when the control signal inputted from the input terminal IT is a pulse signal, for example, a periodic pulse signal with 2ms high level (24V) and 98ms low level (0V), at the rising edge of the pulse signal, the second capacitor C2 is charged quickly, the voltage at the third node C reaches the peak voltage quickly, at the falling edge of the pulse signal, the second capacitor C2 is discharged through the third resistor device R3 and the fourth resistor device R4, the discharging speed is relatively slow, that is, the falling edge at the third node C is relatively slow.
Specifically, when the control signal input to the input terminal IT is a pulse signal, for example, a periodic pulse signal of 2ms high (24V) and 98ms low (0V), the rising edge of the C voltage at the third node is steeper than that of the fourth node E, and the falling edge of the C voltage at the third node is gentler than that of the fourth node E. Therefore, when the control signal input by the input end IT is a pulse signal, the voltage at the third node C is always greater than the voltage at the fourth node E, and at this time, the output end of the comparator CU always outputs a high-level signal, so that IT is ensured that the N communication MOS transistor is in an on state, and the second point light-emitting component L2 is in a lighting state.
In some embodiments, the capacitance values of the first capacitor C1 and the second capacitor C2, and the resistance values of the second resistor device R2, the third resistor device R3 and the fourth capacitor device R4 can be designed according to actual needs as long as the above-mentioned relations are satisfied. In some embodiments, the capacitance of the first capacitor C1 is 10 μ F, the capacitance of the second capacitor C2 is 100nF, and the resistance of the second resistor R2 is 4.7 × 103Omega, the resistance value of the third resistance means R3 is 8.87 x 105Omega, the fourth resistance means R4 has a resistance value of 3.01 x 105Ω。
Based on the specific parameter values of the elements in the control circuit in the above embodiment, when the control signal input from the input terminal IT is 0V, the voltage at the first node a is 0V, the voltage at the third node is 0V, the voltage at the fourth node E is 0V, and the voltage at the fifth node F, that is, the voltage at the output terminal of the comparator CU is 0V, at this time, neither the first light emitting element L1 nor the second light emitting element L2 emits light. When the control signal inputted from the input terminal IT is 24V, the voltage at the first node a is 24V, the voltage at the third node is 7.17V, the voltage at the fourth node E is 8.85V, and the voltage at the fifth node F, that is, the voltage at the output terminal of the comparator CU is 0V, at this time, the first light emitting element L1 emits light, and the second light emitting element L2 does not emit light. When the control signal input from the input terminal IT is a 2ms high-level (24V) and 98ms low-level (0V) periodic pulse signal, the signal at the first node a is a 2ms high-level (24V) and 98ms low-level (0V) periodic pulse signal, the signal at the third node a is a pulse wave with a peak value of 7.3V, the signal at the fourth node E is a pulse wave with a peak value of 4.5V, and the voltage at the fifth node F, i.e., the voltage at the output terminal of the comparator CU is 7.66V, at this time, the first light emitting element L1 does not emit light, and the second light emitting element L2 emits light.
In some embodiments, as shown in fig. 1, the control circuit further includes a filter capacitor C3, the filter capacitor C3 is electrically connected between the input terminal IT and another ground terminal GND1, and the filter capacitor C3 is configured to filter the input control signal to prevent glitches or high frequency interference signals.
Some embodiments of the present disclosure further provide an elevator hall call control device, as shown in fig. 2, which includes the control circuit described in the foregoing embodiments, a button N, and a processor M. The button N is electrically connected between a power supply VCC1 and the processor M and is used for calling an elevator; the processor M is electrically connected with the button N and is configured to output the control signal based on the state of the button. Fig. 2 shows only a schematic diagram of a part of the elevator hall control generating the control signal, and the output terminal OT of the processor M is electrically connected to the input terminal IT of the control circuit in the foregoing embodiment shown in fig. 1. I.e. the processor M is configured to output said control signal to an input of said control circuit based on the state of the button.
In some embodiments, the processor M is configured to: when the button N is triggered, the control signal output by the processor M is at a high level, and the elevator is in a calling state; when the elevator calling is finished, the control signal output by the processor M is a pulse signal, and the elevator is in an idle state; when the button N is not triggered within the preset time after the elevator is in the idle state, the control signal output by the processor M is in a low level, and the elevator is in an energy-saving state. In some embodiments, the high level is 24V, the low level is 0V, and the pulse signal is a 2ms high level (24V) and a 98ms low level (0V) periodic pulse signal.
In some embodiments, the button may be an up call button or a down call button.
Although the present disclosure is described in connection with the accompanying drawings, the embodiments disclosed in the drawings are intended to be illustrative of the embodiments of the disclosure, and should not be construed as a limitation of the disclosure. The dimensional proportions in the drawings are merely schematic and are not to be understood as limiting the disclosure.
The foregoing embodiments are merely illustrative of the principles and configurations of this disclosure and are not to be construed as limiting thereof, it being understood by those skilled in the art that any variations and modifications of the disclosure may be made without departing from the general concept of the disclosure. The protection scope of the present disclosure shall be subject to the scope defined by the claims of the present application.
Claims (14)
1. A control circuit, the control circuit comprising:
an input terminal for inputting a control signal;
a power supply terminal for supplying a power supply voltage;
a ground terminal for providing a ground voltage;
a first node electrically connected to the input terminal;
the first resistor device and the first light-emitting component are sequentially connected in series between the first node and the grounding end;
the first charging and discharging circuit is connected with the first light-emitting assembly in parallel;
a second charge/discharge circuit electrically connected between the first node and the ground terminal;
the second light-emitting component and the switching device are sequentially connected between the power supply end and the grounding end in series, wherein the switching device comprises a gate pole, a first pole and a second pole, the first pole is electrically connected with the second light-emitting component, and the second pole is electrically connected with the grounding end; and
the comparator comprises a first input end, a second input end and an output end, wherein the first input end is electrically connected with the first charge-discharge circuit, the second input end is electrically connected with the second charge-discharge circuit, the output end is electrically connected with the gate pole and is used for controlling the conduction of the switch device,
the second charging and discharging circuit is higher in charging speed and lower in discharging speed than the first charging and discharging circuit.
2. The control circuit of claim 1, wherein the first light emitting component emits light of a different color than the second light emitting component.
3. The control circuit of claim 1 or 2, wherein the first charge and discharge circuit comprises:
and the first capacitor and the second resistor device are connected with the first light-emitting component in parallel between a second node and the grounding terminal, wherein the second node is positioned between the first resistor device and the first light-emitting component.
4. The control circuit of claim 3, wherein the second charge and discharge circuit comprises:
a third resistor device and a fourth resistor device connected in series between the first node and the ground terminal in sequence; and
a second capacitor arranged in parallel with the third and fourth resistance means.
5. The control circuit of claim 4, wherein the first input terminal is electrically connected to a second node through a first rectifying diode, an anode of the first rectifying diode is electrically connected to the first input terminal, a cathode of the first rectifying diode is electrically connected to the second node, and the first input terminal is electrically connected to the power supply terminal through a sixth resistor, the second input terminal being electrically connected to a third node between a third resistor device and a fourth resistor device.
6. The control circuit of claim 1 or 2, further comprising:
and the fifth resistor device, the second light-emitting component and the switch device are sequentially connected in series between the power supply end and the grounding end.
7. The control circuit of claim 4, wherein the control circuit further comprises:
a second rectifying diode connected in series between the first node and the second capacitor, a positive electrode of the second rectifying diode being electrically connected to the first node, and a negative electrode of the second rectifying diode being electrically connected to the second capacitor.
8. A control circuit according to claim 1 or 2, wherein the comparator is an open output comparator, the control circuit further comprising a seventh resistive device and an eighth resistive device, the output of the comparator being electrically connected to the power supply terminal through the seventh resistive device, the gate being electrically connected to the ground terminal through the eighth resistive device.
9. The control circuit of claim 4,
c1 > C2, and C1R 2 < C2 (R3+ R4)
Where C1 and C2 are capacitance values of the first capacitor and the second capacitor, respectively, and R2, R3, and R4 are resistance values of the second resistance device, the third resistance device, and the fourth resistance device, respectively.
10. The control circuit of claim 1 or 2, wherein the first light emitting component is a light emitting diode or a group of light emitting diodes and the second light emitting component is a light emitting diode or a group of light emitting diodes.
11. The control circuit of claim 1 or 2,
when the control signal input by the input end is at a low level, the first light-emitting component and the second light-emitting component do not emit light;
when the control signal input by the input end is at a high level, the first light-emitting component emits light, and the second light-emitting component does not emit light; and
when the control signal input by the input end is a pulse signal, the first light-emitting component does not emit light, and the second light-emitting component emits light.
12. The control circuit of claim 1 or 2, further comprising:
and the filter capacitor is electrically connected between the input end and the other ground end and is configured to filter the control signal.
13. An elevator hall call control device, comprising:
the control circuit of any one of claims 1-12,
the button is used for calling the elevator;
a processor electrically connected to the button and configured to output the control signal to the input of the control circuit based on a state of the button.
14. The hall call control of claim 13, wherein the processor is configured to:
when the button is triggered, the control signal output by the processor is at a high level, and the elevator is in a calling state;
when the elevator calling is finished, the control signal output by the processor is a pulse signal, and the elevator is in an idle state;
when the button is not triggered within the preset time after the elevator is in the idle state, the control signal output by the processor is in a low level, and the elevator is in an energy-saving state.
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| CN202010950346.3A CN112047210B (en) | 2020-09-10 | 2020-09-10 | Control circuit and elevator outbound control device |
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| CN112047210B CN112047210B (en) | 2022-07-12 |
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| Publication number | Publication date |
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| CN112047210B (en) | 2022-07-12 |
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