CN211263699U - Double-control switch misconnection prevention alarm circuit and double-control switch - Google Patents
Double-control switch misconnection prevention alarm circuit and double-control switch Download PDFInfo
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- CN211263699U CN211263699U CN201921700614.5U CN201921700614U CN211263699U CN 211263699 U CN211263699 U CN 211263699U CN 201921700614 U CN201921700614 U CN 201921700614U CN 211263699 U CN211263699 U CN 211263699U
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Abstract
The utility model is suitable for a switch technical field provides a two accuse switch mistake proofing connects warning circuit and two accuse switches, and this two accuse switch mistake proofing connects warning circuit includes: a communication module; a port connected to the communication module; a rectifying circuit for rectifying a supply voltage; the voltage stabilizing circuit is used for dividing voltage of the circuit and acquiring stable direct-current voltage when the port is in misconnection with the other double-control switch; the alarm circuit is used for sending out an alarm signal according to the direct-current voltage; and the signal circuit is used for inputting a misconnection signal to a control module connected with the signal circuit according to the direct current voltage, and the control module controls the execution module to execute corresponding actions according to the misconnection signal. The utility model discloses a two accuse switch mistake proofing meets alarm circuit can send alarm signal when the port mistake of two accuse switches meets and remind the user, makes the user in time learn the wiring mistake, is convenient for in time change the circuit wiring, and control module according to the action that wrong grafting signal control execution module execution corresponds, prevents to avoid the secondary to damage, and the security is good.
Description
Technical Field
The utility model belongs to the technical field of the switch, especially, relate to a two accuse switch misconnection prevention warning circuit and two accuse switches.
Background
The double control switch is a switch with two normally open and normally closed contacts, and two double control switches are usually used for controlling a lamp or other electric appliances, for example, the switch is opened when going downstairs and is closed when going upstairs. The double-control switch is greatly convenient for the life of people, so the double-control switch has a wider application market.
In the prior art, two lines are needed to be connected between two dual-control intelligent switches to realize the dual-control function, and due to the limitation of space and cost, the two lines connecting the middle of the two dual-control switches need to be distinguished, for example: the port A of the first double-control switch must be connected with the port A of the second double-control switch, the port B of the first double-control switch must be connected with the port B of the second double-control switch, if the port between the two double-control intelligent switches is misconnected, the double-control function cannot be realized, even the double-control intelligent switches can be directly burnt and damaged, and the misconnection prevention circuit on the market is passive protection, and whether misconnection occurs can be known only after the operation of a user, so that the double-control switch in the prior art has the problems that the user cannot timely know whether the wiring is wrong, the safety is low, and secondary damage is easily caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides a two accuse switches mistake proofing connect warning circuit aims at solving the two accuse switches of prior art and has the user can't in time learn whether wiring the mistake, and the security is low, easily cause the problem of secondary damage.
The utility model discloses a realize like this, provide a two accuse switch misconnection alarm circuit, include:
the communication module is connected with the power taking circuit;
the port is connected with the communication module and is used for being connected with another double-control switch;
the rectifying circuit is connected with the communication module and used for rectifying the power supply voltage;
the voltage stabilizing circuit is used for dividing voltage by a circuit and acquiring stable direct-current voltage when the port is in misconnection with the other double-control switch;
the alarm circuit is used for sending out an alarm signal according to the direct-current voltage;
the signal circuit is used for inputting a misconnection signal to a control module connected with the signal circuit according to the direct current voltage, and the control module controls an execution module to execute corresponding actions according to the misconnection signal;
the rectifier circuit, the voltage stabilizing circuit, the alarm circuit and the signal circuit are connected in sequence.
Preferably, the execution module is a relay module connected with the control module, and the control module controls the relay module to be disconnected according to the misconnection signal.
Preferably, the ports comprise a first port and a second port, the communication module is connected with the first port through a thermistor RT3, the second port is connected with the communication module and grounded, and the communication module is connected with the rectifying circuit through the thermistor RT 3.
Preferably, the rectifier circuit comprises a resistor R4, a capacitor C1, a capacitor C2, a rectifier diode D7 and a rectifier diode D9;
one end of the resistor R4 is connected with the communication module, the other end of the resistor R4 is sequentially connected with the capacitor C1 and the anode of the rectifier diode D7 in series, the anode of the rectifier diode D9 is connected with the thermistor RT3, the cathode of the rectifier diode D9 is connected between the capacitor C1 and the anode of the rectifier diode D7, one end of the capacitor C2 is connected with the anode of the rectifier diode D9, and the other end of the capacitor C2 is connected with the cathode of the rectifier diode D7.
Preferably, the voltage stabilizing circuit comprises a resistor R9, a resistor R5, a voltage regulator tube ZD5, a voltage regulator tube ZD6 and a triode Q4;
the collector of the triode Q4 is connected with the cathode of the rectifier diode D7 through the resistor R9, the base of the triode Q4 is connected with the cathode of the voltage regulator tube ZD6, the emitter of the triode Q4 is connected with the alarm circuit, the anode of the voltage regulator tube ZD5 is connected with the capacitor C2 and the anode of the voltage regulator tube ZD6, the anode of the voltage regulator tube ZD6 is connected with the alarm circuit, and the resistor R5 is connected with the cathode of the voltage regulator tube ZD5 and the cathode of the voltage regulator tube ZD 6.
Preferably, the rectifier circuit comprises a resistor R18, a capacitor C3, a capacitor C4, a voltage regulator tube ZD8 and a rectifier diode D13;
one end of the resistor R18 is connected with the communication module, the other end of the resistor is sequentially connected with the capacitor C4 and the anode of the rectifier diode D13 in series, the anode of the voltage-regulator tube ZD8 is connected with the thermistor RT3, the cathode of the voltage-regulator tube ZD8 is connected between the capacitor C4 and the anode of the rectifier diode D13, one end of the capacitor C3 is connected with the anode of the voltage-regulator tube ZD8, and the other end of the capacitor C3 is connected with the cathode of the rectifier diode D13.
Preferably, the voltage stabilizing circuit comprises a resistor R21 and a voltage regulator tube ZD 4;
one end of the resistor R21 is connected with the cathode of the rectifier diode D13 and one end of the capacitor C3, the other end of the resistor R21 is connected with the cathode of the voltage regulator tube ZD4 and the alarm circuit, the anode of the voltage regulator tube ZD4 is connected with the other end of the capacitor C3, and the anode of the voltage regulator tube ZD4 and the cathode of the voltage regulator tube ZD4 are respectively connected with the alarm circuit.
Preferably, the alarm circuit comprises an alarm element, a rectifier diode D8 and a resistor R6;
one end of the resistor R6 is connected with the voltage stabilizing circuit, the other end of the resistor R6 is connected with one end of the alarm element, the other end of the alarm element is connected with the anode of the rectifier diode D8, and the cathode of the rectifier diode D8 is connected with the voltage stabilizing circuit and the signal circuit.
Preferably, the signal circuit comprises a resistor R7 and an optical coupler U1;
the optocoupler U1 is formed by bridging a light emitting diode and a phototriode, the anode of the light emitting diode of the optocoupler U1 is connected with the resistor R6 through the resistor R7, the cathode of the light emitting diode of the optocoupler U1 is connected with the cathode of the rectifier diode D8, the emitter of the phototriode of the optocoupler U1 is grounded, and the collector of the phototriode of the optocoupler U1 is connected with the control module.
The utility model also provides a two accuse switches, connect warning circuit including foretell two accuse switches mistake proofing.
The utility model provides a two accuse switch mistake proofing connection alarm circuit connects gradually rectifier circuit, voltage stabilizing circuit, alarm circuit and signal circuit through setting up, when the port of two accuse switch misconnected with the port of another two accuse switch, voltage stabilizing circuit acquireed predetermined stable DC voltage, and DC voltage transmits alarm circuit, makes alarm circuit send alarm signal and reminds the user wiring mistake to make the user in time learn the wiring mistake, be convenient for in time change the circuit wiring; and the signal circuit inputs a misconnection signal to the control module according to the direct current voltage, and the control module controls the execution module to execute corresponding actions according to the misconnection signal so as to disconnect the connection with an external circuit and stop receiving external control signals, thereby preventing secondary damage and having good safety.
Drawings
Fig. 1 is a block diagram of a double-control switch misconnection prevention alarm circuit according to a first embodiment of the present invention;
fig. 2 is a circuit diagram of an alarm circuit for preventing misconnection of a dual-control switch according to a first embodiment of the present invention;
fig. 3 is a circuit diagram of an alarm circuit for preventing misconnection of a dual-control switch according to the second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the utility model provides a two accuse switch mistake proofing connection alarm circuit is through setting up rectifier circuit, voltage stabilizing circuit, alarm circuit and the signal circuit who connects gradually, when the port of two accuse switch misconnected with the port of another two accuse switch, voltage stabilizing circuit acquires predetermined stable DC voltage, and DC voltage transmits alarm circuit, makes alarm circuit send alarm signal and reminds the user wiring mistake to make the user in time learn the wiring mistake, be convenient for in time change the circuit wiring; and the signal circuit inputs a misconnection signal to the control module according to the direct current voltage, and the control module executes corresponding action according to the misconnection signal so as to disconnect the external circuit and stop receiving the external control signal, thereby preventing secondary damage and having good safety.
Example one
Referring to fig. 1 and fig. 2, the utility model provides a double control switch misconnection prevention alarm circuit, including: the communication module 2 is connected with the power taking circuit 1; a port connected with the communication module 2 and used for being connected with another double-control switch; a rectifying circuit 3 connected to the communication module 2 for rectifying the supply voltage; the voltage stabilizing circuit 4 is used for dividing voltage of a circuit and acquiring stable direct-current voltage when a port is in misconnection with another double-control switch; the alarm circuit 5 is used for sending out an alarm signal according to the direct-current voltage; the signal circuit 6 is used for inputting misconnection signals to a control module 7 connected with the signal circuit 6 according to the direct current voltage, and the control module 7 controls an execution module to execute corresponding actions according to the misconnection signals; the rectifying circuit 3, the voltage stabilizing circuit 4, the alarm circuit 5 and the signal circuit 6 are connected in sequence.
In the embodiment of the utility model, through setting up rectifier circuit 3, voltage stabilizing circuit 4, alarm circuit 5 and signal circuit 6 that connect gradually, when the port of two accuse switches misconnected with the port of another two accuse switches, voltage stabilizing circuit 4 acquires preset stable direct current voltage, and direct current voltage transmits alarm circuit 5, makes alarm circuit 5 send alarm signal and reminds the user wiring mistake to make the user in time learn the wiring mistake, be convenient for in time change the circuit wiring; moreover, the signal circuit 6 inputs a misconnection signal to the control module 7 according to the direct current voltage, and the control module 7 controls the execution module to execute corresponding actions according to the misconnection signal, so that the connection with an external circuit is disconnected and the external control signal is stopped from being received, thereby preventing secondary damage and having good safety.
The embodiment of the utility model provides an in, get electric circuit 1 and the L line or the N line of commercial power and link to each other, when two double control switches link to each other, one of them double control switch get electric circuit 1 and the L line of commercial power link to each other, another double control switch get electric circuit 1 and the N line of commercial power link to each other, and the first port A of a double control switch passes through electric wire connection to the first port A of another double control switch, and second port B passes through electric wire connection to the second port B of another double control switch, realizes two accuse functions.
The embodiment of the utility model provides an in, the port includes first port A and second port B, and communication module 2 passes through thermistor RT3 to be connected with first port A, and second port B is connected and ground connection with communication module 2, and communication module 2 passes through thermistor RT3 and links to each other with rectifier circuit 3.
When the ports are misconnected, namely the first port A is connected to the second port B of another double-control switch, the second port B is connected to the first port A of another double-control switch, the second port B to the first port A of another double-control switch form a part of a main circuit of a mains supply, a load current flows through the thermistor RT3, after a period of time, the thermistor RT3 is heated and disconnected, the circuit is prevented from being further damaged, and at the moment, the voltage stabilizing circuit 4 obtains a preset stable direct current voltage to drive the alarm circuit 5 to send out an alarm signal.
As an embodiment of the present invention, the communication module 2 includes a resistor R3, a resistor R14, a resistor R15, a rectifier diode D5, a rectifier diode D6, a triode Q3, and a voltage regulator ZD 3.
The base electrode of the triode Q3 is connected with an IO1 port of the control module 7, the collector electrode of the triode Q3 is connected with the anode of the rectifier diode D5, the cathode of the rectifier diode D5 is connected with the electricity-taking circuit 1 through a resistor R3, the anode of the voltage regulator tube ZD3 is connected with the emitter electrode of the triode Q3 and grounded, the cathode of the voltage regulator tube ZD3 is connected between the collector electrode of the triode Q3 and the anode of the rectifier diode D5, one end of the resistor R14 is connected with the thermistor RT3, the other end of the resistor R15 is grounded, the port 1 of the control module 7 is further connected between the resistor R14 and the resistor R15, the anode of the rectifier diode D6 is connected with the electricity-taking circuit 1, and the cathode of the rectifier diode D6 is connected.
In this embodiment, the anode of the rectifying diode D6 is connected to the VCC terminal of the power supply circuit 1, the cathode of the rectifying diode D5 is connected to the VCC terminal of the power supply circuit 1 through the resistor R3, and the triode Q3 is controlled by the control module 7. When the triode Q3 is turned off, the first port a is a stable dc voltage, and when the control module 7 sends a high level signal by an external command at a certain moment, the triode Q3 is turned on to pull the voltage of the first port a to the ground, the ground signal of the first port a will be synchronized to the first port a of another dual-control switch connected to the first port a, so that the voltage between the resistor R14 and the resistor R15 of the another dual-control switch will be synchronized to the ground, and the voltage signal is simultaneously input to the control module 7 of the another dual-control switch, thereby completing the signal communication of the two dual-control switches. When an external control command (such as key/touch/APP) controls one of the double-control switches, the control signal is transmitted to the other double-control switch at the same time, so that the two double-control switches complete control switching according to the current load bulb state, and the double-control function is realized.
The embodiment of the utility model provides an in, the relay module 8 that execution module is connected with control module 7, and control module 7 disconnects according to misconnection signal control relay module 8.
The embodiment of the utility model provides an in, supply with control module 7 through inside voltage stabilizing circuit after getting suitable voltage on the electric circuit 1 intercepting commercial power, then give relay module 8 according to present state and outside control command signaling order by control module 7 to open or turn-off relay module 8, with the state that changes bulb load on the commercial power line. When two accuse switch's first port A and second port B misconnection, voltage stabilizing circuit 4 acquires predetermined stable direct current voltage and sends alarm signal in order to drive alarm circuit 5, signal circuit 6 inputs the misconnection signal to control module 7 simultaneously, wherein, the misconnection signal is low level signal, control module 7 is according to the disconnection of the low level signal control relay module 8 of input, and simultaneously, the outside control signal of lock, outside control signal can be the button, touch or APP control signal, avoid the secondary damage, in order to protect the circuit. If adopt APP control, when the first port A of two accuse switches and second port B misconnection, can also upload the user's user side that sets up in advance with the signal of wiring mistake, the user of being convenient for in time learns the wiring mistake.
As an embodiment of the present invention, the rectifier circuit 3 includes a resistor R4, a capacitor C1, a capacitor C2, a rectifier diode D7, and a rectifier diode D9.
One end of a resistor R4 is connected with the communication module 2, the other end of the resistor R4 is sequentially connected with the capacitor C1 and the anode of the rectifier diode D7 in series, the anode of the rectifier diode D9 is connected with the thermistor RT3, the cathode of the rectifier diode D9 is connected between the capacitor C1 and the anode of the rectifier diode D7, one end of a capacitor C2 is connected with the anode of the rectifier diode D9, and the other end of the capacitor C2 is connected with the cathode of the rectifier diode D7.
Specifically, one end of the resistor R4 is connected to the negative electrode of the rectifier diode D6 of the communication module 2. Wherein, the electricity taking circuit 1 of one double-control switch is connected with the L line of the commercial power, and the electricity taking circuit 1 of the other double-control switch is connected with the N line of the commercial power. When the N line on the mains supply line is positive voltage and the L line on the mains supply line is negative voltage, the circuit charges the capacitor C1 through the rectifier diode D9; when the L line on the mains supply line is positive voltage and the N line on the mains supply line is negative voltage, the mains supply and the capacitor C1 charge the capacitor C2 through the rectifier diode D7 at the same time, so that the voltage on the capacitor C2 is increased to be close to twice of the voltage value of the thermistor RT3, the phenomenon that the thermistor RT3 does not act due to insufficient heat generated on the thermistor RT3 by current when the first port A and the second port B are in misconnection is avoided, and the thermistor RT3 is ensured to be disconnected in time when the first port A and the second port B are in misconnection.
As an embodiment of the present invention, the voltage stabilizing circuit 4 includes a resistor R9, a resistor R5, a voltage regulator ZD5, a voltage regulator ZD6, and a transistor Q4.
The collector of the triode Q4 is connected with the cathode of the rectifier diode D7 through a resistor R9, the base of the triode Q4 is connected with the cathode of a voltage regulator tube ZD6, the emitter of the triode Q4 is connected with the alarm circuit 5, the anode of the voltage regulator tube ZD5 is connected with a capacitor C2 and the anode of the voltage regulator tube ZD6, the anode of the voltage regulator tube ZD6 is connected with the alarm circuit 5, and the resistor R5 is connected with the cathode of the voltage regulator tube ZD5 and the cathode of the voltage regulator tube ZD 6.
In this embodiment, the voltage regulator ZD5 is provided to avoid that the voltage across the capacitor C2 will be too high by the rectifier circuit 3 after the thermistor RT3 is turned off under a heavy load condition, so that the resistor R9 and the voltage regulator ZD5 form a voltage regulator voltage divider circuit to reduce the input voltage at the rear end. The resistor R5, the voltage regulator tube ZD6 and the triode Q4 form a standard triode voltage stabilizing circuit.
When the first port A and the second port B are connected in a wrong way, namely the first port A is connected to the second port B of the other double-control switch, the second port B is connected to the first port A of the other double-control switch, the second port B to the first port A of the other double-control switch form a part of a main circuit of a commercial power, load current flows through the thermistor RT3, after a period of time, the thermistor RT3 is heated and disconnected, the circuit is prevented from being further damaged, and due to the disconnection of the thermistor RT3, an emitting electrode of the triode Q4 obtains a preset stable direct current voltage.
As an embodiment of the present invention, the alarm circuit 5 includes an alarm element, a rectifier diode D8, and a resistor R6.
One end of the resistor R6 is connected with the voltage stabilizing circuit 4, the other end of the resistor R6 is connected with one end of the alarm element, the other end of the alarm element is connected with the anode of the rectifier diode D8, and the cathode of the rectifier diode D8 is connected with the voltage stabilizing circuit 4 and the signal circuit 6.
In this embodiment, the alarm element is a buzzer LS1, and the resistor R6 is a current limiting resistor. In addition, the warning element can also be a light-emitting diode.
One end of the resistor R6 is connected to the emitter of the transistor Q4 of the voltage regulator circuit 4. After the emitter of the triode Q4 obtains a preset stable dc voltage, the stable dc voltage is input to the alarm circuit 5, and the buzzer LS1 will give an alarm to remind the user of a wiring error under the current limiting action of the resistor R6. By providing the rectifier diode D8 in the alarm circuit 3, the rectifier diode D8 functions to prevent noise generated during start-up and operation from causing the buzzer LS1 to emit noise and affecting user experience when the alarm circuit is normally connected.
As an embodiment of the utility model, signal circuit 6 includes resistance R7 and opto-coupler U1, opto-coupler U1 comprises a emitting diode and a phototriode cross-over, opto-coupler U1's emitting diode's positive pole links to each other with resistance R7, opto-coupler U1's emitting diode's negative pole is connected with rectifier diode D8's negative pole, opto-coupler U1's phototriode's projecting pole ground connection, opto-coupler U1's phototriode's collecting electrode links to each other with control module 7.
Specifically, the collector of the phototransistor of the optocoupler U1 is connected to the IO2 port of the control module 7, and the collector of the phototransistor of the optocoupler U1 is connected to the VCC1 port of the control module 7 through the resistor R8.
In this embodiment, the resistor R7 is a current-limiting resistor, under the effect of the stable dc voltage input by the voltage stabilizing circuit 4, the light emitting diode inside the optocoupler U1 is turned on through the resistor R7, so that the pin of the lower end of the resistor R8 connected to the IO2 port of the control module 7 is changed from high level to low level, after the control module 7 receives the low level signal, the control module 7 controls to disconnect the relay module 8, and simultaneously locks the external key/touch/APP control signal, so that the external control signal cannot communicate with the inside, thereby realizing warning to remind the user first, and not knowing the wiring error after the user operates, reminding the user of the wrong connection situation in time, facilitating the user to change the wiring in time, and the control module 7 disconnects the relay module 8 and locks the external control signal, thereby stopping receiving the external control signal, and avoiding the secondary damage of the circuit, the safety performance is improved.
The embodiment of the utility model provides a two accuse switch mistake proofing connection alarm circuit is through setting up rectifier circuit, voltage stabilizing circuit, alarm circuit and the signal circuit who connects gradually, when the port of two accuse switch misconnected with the port of another two accuse switch, voltage stabilizing circuit acquires predetermined stable DC voltage, and DC voltage transmits alarm circuit, makes alarm circuit send alarm signal and reminds the user wiring mistake to make the user in time learn the wiring mistake, be convenient for in time change the circuit wiring; and the signal circuit inputs a misconnection signal to the control module according to the direct current voltage, and the control module controls the execution module to execute corresponding actions according to the misconnection signal, so that the connection with an external circuit is disconnected and the external control signal is stopped from being received, secondary damage is prevented, and the safety is good.
Example two
Referring to fig. 3, a difference between the second embodiment and the first embodiment is that in the present embodiment, the rectifier circuit 3 includes a resistor R18, a capacitor C3, a capacitor C4, a voltage regulator ZD8, and a rectifier diode D13, one end of the resistor R18 is connected to the communication module 2, the other end of the resistor R18 is connected in series with the anodes of the capacitor C4 and the rectifier diode D13 in sequence, the anode of the voltage regulator ZD8 is connected to the thermistor RT3, the cathode of the voltage regulator ZD8 is connected between the anodes of the capacitor C4 and the rectifier diode D13, one end of the capacitor C3 is connected to the anode of the voltage regulator ZD8, and the other end of the capacitor C3 is connected to the cathode of the rectifier diode D13.
Specifically, one end of the resistor R18 is connected to the negative electrode of the rectifier diode D6 of the communication module 2. The voltage regulator tube ZD8 in the rectifying circuit 3 has the functions of voltage regulation and rectification at the same time, and the voltage of the capacitor C3 is limited not to exceed a certain value, so that the voltage of the capacitor C3 is prevented from being too high.
In this embodiment, the voltage regulator circuit 4 includes a resistor R21 and a voltage regulator ZD 4; one end of a resistor R21 is connected with the cathode of a rectifier diode D13 and one end of a capacitor C3, the other end of the resistor R21 is connected with the cathode of a voltage regulator tube ZD4 and an alarm circuit, the anode of the voltage regulator tube ZD4 is connected with the other end of the capacitor C3, and the anode of the voltage regulator tube ZD4 and the cathode of the voltage regulator tube ZD4 are respectively connected with the alarm circuit 5. Specifically, the anode of the voltage regulator tube ZD4 is connected to the cathode of the rectifier diode D8, and the cathode of the voltage regulator tube ZD4 is connected to the resistor R6. Compared with the first embodiment, the triode voltage stabilizing circuit is eliminated in the voltage stabilizing circuit 4, and only the resistor R21 and the voltage regulator tube ZD4 form a voltage stabilizing and dividing circuit, so that the circuit is simpler.
EXAMPLE III
Referring to fig. 1-3, the present invention further provides a dual-control switch, which includes the dual-control switch misconnection prevention alarm circuit according to the first embodiment or the second embodiment.
In this embodiment, the double control switch is provided with the double control switch misconnection prevention alarm circuit of the first embodiment or the second embodiment, when the first port a and the second port B of the double control switch are misconnected with the first port a and the second port B of another double control switch, the voltage stabilizing circuit 4 obtains a preset stable direct current voltage, and the direct current voltage is transmitted to the alarm circuit 5, so that the alarm circuit 5 sends an alarm signal to remind a user of a wiring error, and the user can know the wiring error in time, and the wiring of a line can be changed in time conveniently; moreover, the signal circuit 6 inputs a misconnection signal to the control module 7 according to the direct current voltage, and the control module 7 controls the execution module to execute corresponding actions according to the misconnection signal, so that the connection with an external circuit is disconnected and the external control signal is stopped from being received, thereby preventing secondary damage and having good safety.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A double-control switch misconnection prevention alarm circuit is characterized by comprising:
the communication module is connected with the power taking circuit;
the port is connected with the communication module and is used for being connected with another double-control switch;
the rectifying circuit is connected with the communication module and used for rectifying the power supply voltage;
the voltage stabilizing circuit is used for dividing voltage by a circuit and acquiring stable direct-current voltage when the port is in misconnection with the other double-control switch;
the alarm circuit is used for sending out an alarm signal according to the direct-current voltage;
the signal circuit is used for inputting a misconnection signal to a control module connected with the signal circuit according to the direct current voltage, and the control module controls an execution module to execute corresponding actions according to the misconnection signal;
the rectifier circuit, the voltage stabilizing circuit, the alarm circuit and the signal circuit are connected in sequence.
2. The double-control switch misconnection prevention alarm circuit of claim 1, wherein the execution module is a relay module connected with the control module, and the control module controls the relay module to be disconnected according to the misconnection signal.
3. The double-control switch misconnection prevention alarm circuit of claim 1, wherein the ports comprise a first port and a second port, the communication module is connected with the first port through a thermistor RT3, the second port is connected with the communication module and grounded, and the communication module is connected with the rectifier circuit through the thermistor RT 3.
4. The double-control switch misconnection prevention alarm circuit of claim 3, wherein the rectification circuit comprises a resistor R4, a capacitor C1, a capacitor C2, a rectifier diode D7 and a rectifier diode D9;
one end of the resistor R4 is connected with the communication module, the other end of the resistor R4 is sequentially connected with the capacitor C1 and the anode of the rectifier diode D7 in series, the anode of the rectifier diode D9 is connected with the thermistor RT3, the cathode of the rectifier diode D9 is connected between the capacitor C1 and the anode of the rectifier diode D7, one end of the capacitor C2 is connected with the anode of the rectifier diode D9, and the other end of the capacitor C2 is connected with the cathode of the rectifier diode D7.
5. The dual-control switch misconnection prevention alarm circuit of claim 4, wherein the voltage-stabilizing circuit comprises a resistor R9, a resistor R5, a voltage-regulator tube ZD5, a voltage-regulator tube ZD6 and a triode Q4;
the collector of the triode Q4 is connected with the cathode of the rectifier diode D7 through the resistor R9, the base of the triode Q4 is connected with the cathode of the voltage regulator tube ZD6, the emitter of the triode Q4 is connected with the alarm circuit, the anode of the voltage regulator tube ZD5 is connected with the capacitor C2 and the anode of the voltage regulator tube ZD6, the anode of the voltage regulator tube ZD6 is connected with the alarm circuit, and the resistor R5 is connected with the cathode of the voltage regulator tube ZD5 and the cathode of the voltage regulator tube ZD 6.
6. The double-control switch misconnection prevention alarm circuit according to claim 3, wherein the rectification circuit comprises a resistor R18, a capacitor C3, a capacitor C4, a voltage regulator tube ZD8 and a rectifier diode D13;
one end of the resistor R18 is connected with the communication module, the other end of the resistor is sequentially connected with the capacitor C4 and the anode of the rectifier diode D13 in series, the anode of the voltage-regulator tube ZD8 is connected with the thermistor RT3, the cathode of the voltage-regulator tube ZD8 is connected between the capacitor C4 and the anode of the rectifier diode D13, one end of the capacitor C3 is connected with the anode of the voltage-regulator tube ZD8, and the other end of the capacitor C3 is connected with the cathode of the rectifier diode D13.
7. The dual-control switch misconnection prevention alarm circuit of claim 6, wherein the voltage regulator circuit comprises a resistor R21 and a voltage regulator tube ZD 4;
one end of the resistor R21 is connected with the cathode of the rectifier diode D13 and one end of the capacitor C3, the other end of the resistor R21 is connected with the cathode of the voltage regulator tube ZD4 and the alarm circuit, the anode of the voltage regulator tube ZD4 is connected with the other end of the capacitor C3, and the anode of the voltage regulator tube ZD4 and the cathode of the voltage regulator tube ZD4 are respectively connected with the alarm circuit.
8. The double-control switch misconnection prevention alarm circuit of claim 1, wherein the alarm circuit comprises an alarm element, a rectifier diode D8 and a resistor R6;
one end of the resistor R6 is connected with the voltage stabilizing circuit, the other end of the resistor R6 is connected with one end of the alarm element, the other end of the alarm element is connected with the anode of the rectifier diode D8, and the cathode of the rectifier diode D8 is connected with the voltage stabilizing circuit and the signal circuit.
9. The double-control switch misconnection prevention alarm circuit of claim 8, wherein the signal circuit comprises a resistor R7 and an optocoupler U1;
the optocoupler U1 is formed by bridging a light emitting diode and a phototriode, the anode of the light emitting diode of the optocoupler U1 is connected with the resistor R6 through the resistor R7, the cathode of the light emitting diode of the optocoupler U1 is connected with the cathode of the rectifier diode D8, the emitter of the phototriode of the optocoupler U1 is grounded, and the collector of the phototriode of the optocoupler U1 is connected with the control module.
10. A double control switch comprising the double control switch misconnection prevention alarm circuit according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921700614.5U CN211263699U (en) | 2019-10-11 | 2019-10-11 | Double-control switch misconnection prevention alarm circuit and double-control switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921700614.5U CN211263699U (en) | 2019-10-11 | 2019-10-11 | Double-control switch misconnection prevention alarm circuit and double-control switch |
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| CN211263699U true CN211263699U (en) | 2020-08-14 |
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| CN201921700614.5U Active CN211263699U (en) | 2019-10-11 | 2019-10-11 | Double-control switch misconnection prevention alarm circuit and double-control switch |
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| Country | Link |
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| CN (1) | CN211263699U (en) |
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