Hybrid connection verification circuit, verification equipment and emergency lamp

Abstract

The utility model relates to the technical field of circuits, and discloses a mixed connection verification circuit, verification equipment and an emergency lamp, and the circuit comprises a comparison module, a latch module, a trigger module and a switch module. The comparison module is connected with an external null line and an external live line, and the comparison module is also connected with the latch module; the latch module is also connected with the trigger module; the trigger module is further connected with an external control circuit and the switch module. And the switch module is also connected with the external control circuit. Under the condition of not additionally introducing a correction signal, port mixed connection verification is carried out on an external control circuit by using alternating current signal phase information on a null line and live line network at two ends of the mixed connection port, so that the working accuracy of the emergency lighting system is ensured; port verification can be automatically carried out on the emergency lamp system in the zero and live wire network during alternating current power-off, and failure of the emergency lamp system caused by mixed connection of ports is avoided.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of circuits, in particular to a mixed connection verification circuit, a verification device and an emergency lamp. BACKGROUND

[0002] The existing emergency lamps generally adopt LED light sources, have higher brightness and longer service life. Meanwhile, the use of lithium batteries makes the endurance and charging efficiency of the emergency lamps have a qualitative leap. The current emergency lamps can realize automatic detection to accurately control the on-off state of the emergency lamps.

[0003] When multiple emergency lamps are used in parallel, if the sampling detection ports of the emergency lamps are mixed and connected to the zero-fire line network, the detection function of the emergency lamp control circuit to the power grid will be abnormal, and it is usually necessary to distinguish the zero-fire line when connected to the alternating current power grid, which will cause installation trouble. CONTENT OF THE INVENTION

[0004] The application aims to provide a mixed connection verification circuit, a verification device and an emergency lamp, and aims to solve the technical problem of abnormal detection function of the emergency lamp control circuit to the power grid when multiple emergency lamps are mixed and connected to the zero-fire line network.

[0005] To achieve the above-mentioned purpose, the application provides a mixed connection verification circuit, which comprises a comparison module, a latch module, a trigger module and a switch module.

[0006] The comparison module is connected to external zero-fire lines, and is also connected to the latch module; the latch module is also connected to the trigger module; the trigger module is also connected to an external control circuit and the switch module respectively; and the switch module is also connected to the external control circuit.

[0007] The comparison module is used for comparing the voltage on the external zero-fire lines to obtain a voltage difference, and obtaining phase information according to the voltage difference.

[0008] The latch module is used for latching the phase information.

[0009] The trigger module is used for correcting the connection relationship between the switch module and the external control circuit and the external zero-fire lines by using the phase information when detecting that the external control circuit is powered off in alternating current.

[0010] In an embodiment, the switch module comprises a first double-path switch and a second double-path switch.

[0011] The first end and the second end of the first double-path switch are connected to the external zero-fire lines, the third end of the first double-path switch is connected to the first end of the external control circuit and the second end of the trigger module.

[0012] The first end and the second end of the second double switch are connected with the external zero fire line, and the third end of the second double switch is connected with the second end of the external control circuit and the third end of the trigger module.

[0013] In an embodiment, the comparison module comprises a comparator.

[0014] The first end and the second end of the comparator are connected with the external zero fire line, and the third end of the comparator is connected with the latch module.

[0015] The first end of the comparator is also connected with the first end of the first double switch and the second end of the second double switch.

[0016] The second end of the comparator is also connected with the first end of the second double switch and the second end of the first double switch.

[0017] In an embodiment, the latch module comprises a signal latch.

[0018] The first end of the signal latch is connected with the third end of the comparator, and the second end of the signal latch is connected with the trigger module.

[0019] In an embodiment, the trigger module comprises a flip-flop.

[0020] The first end of the flip-flop is connected with the second end of the signal latch, the second end of the flip-flop is connected with the third end of the first double switch, the third end of the flip-flop is connected with the third end of the second double switch, and the fourth end of the flip-flop is connected with the third end of the external control circuit.

[0021] In an embodiment, the mixed connection verification circuit further comprises a voltage division module.

[0022] One end of the voltage division module is connected with the external zero fire line, and the other end of the voltage division module is connected with the comparison module and the switch module.

[0023] In an embodiment, the voltage division module comprises a first resistor and a second resistor.

[0024] The first end of the first resistor is connected with one of the external zero fire lines, and the second end of the first resistor is connected with the first end of the second double switch and the second end of the first double switch.

[0025] The first end of the second resistor is connected with the other of the external zero fire lines, and the second end of the second resistor is connected with the first end of the first double switch and the second end of the second double switch.

[0026] In addition, to achieve the above object, the application further provides a verification device, which comprises at least one hybrid connection verification circuit as described above.

[0027] In an embodiment, the hybrid connection verification circuits are arranged in parallel.

[0028] One end of the hybrid connection verification circuit arranged in parallel is connected to the external zero fire line, and the other end is connected to another external control circuit.

[0029] In addition, to achieve the above object, the application further provides an emergency lamp, which comprises the verification device as described above.

[0030] The application provides a hybrid connection verification circuit, which comprises a comparison module, a latch module, a trigger module and a switch module. The comparison module is connected to an external zero fire line, and is further connected to the latch module. The latch module is further connected to the trigger module. The trigger module is further connected to an external control circuit and the switch module respectively. The switch module is further connected to the external control circuit. The comparison module is used to compare a voltage difference obtained from the voltage on the external zero fire line, and obtain phase information according to the voltage difference. The latch module is used to latch the phase information. The trigger module is used to correct the connection relationship between the switch module and the external control circuit and the external zero fire line by using the phase information when detecting that the external control circuit is powered off in alternating current. In the case of not needing to introduce a correction signal additionally, the hybrid connection verification circuit uses the phase information of the alternating current signal on the zero fire line network at the two ends of the hybrid connection port to perform port hybrid connection verification on the external control circuit, thereby ensuring the accuracy of the emergency lighting system. The hybrid connection verification circuit can automatically perform port verification on the emergency lamp system connected in the zero fire line network when the external control circuit is powered off in alternating current, thereby avoiding the failure of the emergency lamp system caused by port hybrid connection. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 The module schematic diagram of the first embodiment of the hybrid connection verification circuit provided by the application;

[0032] Figure 2 The circuit connection diagram of the second embodiment of the hybrid connection verification circuit provided by the application;

[0033] Figure 3 The circuit connection diagram of the third embodiment of the verification device provided by the application;

[0034] Figure 4 The waveform diagram of the third embodiment of the verification device provided by the application.

[0035] EXPLANATION OF REFERENCE NUMBERS:

[0036] Reference Name Reference Name 100 Comparison module 410 First two-way switch 200 Latch module 420 Second two-way switch 300 Trigger module R1 First resistor 400 Switch module R2 Second resistor 500 External control circuit 600 Voltage division module 110 Comparator 310 Flip-flop 210 Signal latch DETAILED DESCRIPTION

[0037] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0039] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0040] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0041] Reference Figure 1 , Figure 1 This is a schematic diagram of the module of the first embodiment of the mixed-connection verification circuit proposed in this application. Based on Figure 1 The first embodiment of the mixed-connection verification circuit of this application is presented.

[0042] The mixed connection verification circuit includes: a comparison module 100, a latch module 200, a trigger module 300, and a switch module 400; the comparison module 100 is connected to the external live and neutral wires, and the comparison module 100 is also connected to the latch module 200; the latch module 200 is also connected to the trigger module 300; the trigger module 300 is also connected to the external control circuit 500 and the switch module 400 respectively; the switch module 400 is also connected to the external control circuit 500.

[0043] It should be understood that the comparison module 100 is connected to the external live and neutral wires, enabling it to acquire relevant electrical characteristic information of the live and neutral wires, such as voltage and current, for comparison. The comparison module 100 is also connected to the latch module 200, and its purpose is to transmit the comparison results to the latch module 200. The main function of the comparison module 100 is to compare relevant electrical parameters of the external live and neutral wires. For example, it may compare whether the voltage difference between the live and neutral wires is within the normal range, or compare some characteristics of the live and neutral wire currents. If a mixed connection exists, the electrical characteristics of the live and neutral wires will differ from normal conditions, and the comparison module 100 can detect this difference.

[0044] It should be noted that the latch module 200 is connected to the comparison module 100 and receives the comparison result from the comparison module 100. The latch module 200 is also connected to the trigger module 300, and it transmits the latched result to the trigger module 300. The latch module 200 is used to store the result transmitted from the comparison module 100. This is necessary because the comparison result may be an instantaneous electrical signal, and without latching, subsequent modules may not be able to accurately obtain the result. For example, when the comparison module 100 detects an abnormal comparison result (mixed connection) between the live and neutral wires, the latch module 200 can save this state so that the trigger module 300 can perform further processing.

[0045] It should be understood that the trigger module 300 is connected to the latch module 200 to obtain the latched result. The trigger module 300 is also connected to the external control circuit 500 and the switch module 400. When it receives a result from the latch module 200 indicating a possible cross-connection, the trigger module 300 will perform a trigger action according to preset logic. On one hand, it can send a signal to the external control circuit 500, informing it of the potential cross-connection, so that the external control circuit 500 can take appropriate measures, such as alarming or logging. On the other hand, the trigger module 300 can send a control signal to the switch module 400, for example, controlling the switch module 400 to cut off the circuit to avoid potential dangers from cross-connection, such as electrical damage or electric shock.

[0046] It should be noted that the switch module 400 is connected to the trigger module 300 and receives control signals from the trigger module 300. Based on the signals from the trigger module 300, the switch module 400 can perform on or off operations. If the trigger module 300 determines there is a risk of misconnection and sends a shutdown signal, the switch module 400 will disconnect the circuit, protecting the circuit, related equipment, and personnel safety. If the trigger module 300 sends a normal signal or an alarm cancellation signal, the switch module 400 can maintain the circuit's continuity.

[0047] The comparison module 100 is used to compare the voltages on the external live and neutral wires to obtain the voltage difference, and to obtain phase information based on the voltage difference.

[0048] It should be understood that the primary task of the comparison module 100 is to compare the voltages on the external live and neutral wires. In a circuit, the voltages on the live and neutral wires differ. Through specialized circuit design, it can accurately acquire the voltage values ​​on these two wires and calculate the voltage difference between them. Phase information is then obtained based on the calculated voltage difference. Since voltage and current have a phase relationship in AC circuits, the voltage difference between the live and neutral wires is closely related to this phase relationship. For example, in a purely resistive circuit, voltage and current are in phase, while in an inductive or capacitive circuit, the phases of voltage and current will be offset to varying degrees. By analyzing the magnitude, sign, and other characteristics of the voltage difference, the comparison module 100 can deduce the phase information, providing a crucial basis for subsequent operations.

[0049] The latch module 200 is used to latch the phase information.

[0050] It should be noted that the latch module 200 is responsible for latching the phase information acquired by the comparison module 100. During circuit operation, the phase information is a dynamically changing value, and this information needs to be used accurately at specific moments (such as the instant AC power is turned off). The latch module 200 acts like an "information storage device," saving the phase information at this moment to prevent information loss or tampering, ensuring that subsequent modules can use accurate phase information.

[0051] The trigger module 300 is used to correct the connection relationship between the external control circuit 500 and the external neutral and live wires by the switch module 400 when the external control circuit 500 is detected to be AC ​​powered down.

[0052] It should be understood that the trigger module 300 has the function of detecting the AC power-off status of the external control circuit 500. This is likely done by monitoring parameters such as voltage and current in the circuit to determine whether an AC power-off phenomenon has occurred. For example, when the voltage drops below a certain threshold or the current is interrupted, the trigger module 300 determines that the AC power-off has occurred. Once the AC power-off of the external control circuit 500 is detected, the trigger module 300 uses the phase information latched in the latch module 200 to correct the connection relationship between the switching module 400 and the external control circuit 500 and the external live and neutral wires. Correcting the connection relationship is crucial for the normal operation of the circuit, the safety of the equipment, and the efficient use of power during circuit restarts or state transitions. Correcting the connection relationship through phase information ensures that the circuit maintains optimal operating conditions under various states, preventing problems such as short circuits and overloads.

[0053] In this embodiment, the mixed connection verification circuit includes: a comparison module 100, a latch module 200, a trigger module 300, and a switch module 400; the comparison module 100 is connected to the external live and neutral wires, and the comparison module 100 is also connected to the latch module 200; the latch module 200 is also connected to the trigger module 300; the trigger module 300 is also connected to the external control circuit 500 and the switch module 400 respectively; the switch module 400 is also connected to the external control circuit 500; the comparison module 100 is used to compare the voltages on the external live and neutral wires to obtain the voltage difference, and obtain phase information based on the voltage difference; the latch module 200 is used to latch the phase information; the trigger module 300 is used to correct the connection relationship between the switch module 400 and the external live and neutral wires when the external control circuit 500 is detected to be AC ​​powered down. Without the need for additional correction signals, the external control circuit 500 is checked for port misconnection by utilizing the phase information of the AC signals on the live and neutral wire networks at both ends of the misconnection port, ensuring the accuracy of the emergency lighting system. It can automatically connect to the emergency lighting system in the live and neutral wire network for port verification when the AC power is off, avoiding failure of the emergency lighting system due to port misconnection.

[0054] Reference Figure 2 , Figure 2 This is a schematic diagram of the module of the second embodiment of the mixed-connection verification circuit proposed in this application. The second embodiment of the mixed-connection verification circuit of this application is proposed based on the first embodiment of the mixed-connection verification circuit described above.

[0055] The switch module 400 includes: a first dual-channel switch 410 and a second dual-channel switch 420;

[0056] The first and second ends of the first dual-way switch 410 are connected to the external live and neutral wires, and the third end of the first dual-way switch 410 is connected to the first end of the external control circuit 500 and the second end of the trigger module 300.

[0057] It should be understood that the first dual-way switch 410 has three terminals. The first and second terminals are connected to the external live and neutral wires, allowing the external live and neutral wires to interact with the dual-way switch. The live and neutral wires are important lines for external power supply, and this connection lays the foundation for subsequent circuit control. The third terminal is connected to the first terminal of the external control circuit 500 and the second terminal of the trigger module 300. This connection links the external control circuit 500 and the trigger module 300 to the first dual-way switch 410. The external control circuit 500 may be used to control the first dual-way switch 410, while the trigger module 300 may respond accordingly to changes in the state of the first dual-way switch 410.

[0058] The first and second ends of the second dual-way switch 420 are connected to the external live and neutral wires, and the third end of the second dual-way switch 420 is connected to the second end of the external control circuit 500 and the third end of the trigger module 300.

[0059] It should be noted that the second dual-channel switch 420 also has three terminals. The first and second terminals are connected to the external live and neutral wires, similar to the first dual-channel switch 410, and are also connected based on the external live and neutral wires to obtain power supply or as part of the circuit path. The third terminal is connected to the second terminal of the external control circuit 500 and the third terminal of the trigger module 300. This connection associates another part of the external control circuit 500 and another part of the trigger module 300 with the second dual-channel switch 420, thus forming a circuit structure with the participation of the external control circuit 500 and the trigger module 300 together with the first dual-channel switch 410.

[0060] The comparison module 100 includes: a comparator 110;

[0061] The first and second terminals of the comparator 110 are connected to the external live and neutral wires; the third terminal of the comparator 110 is connected to the latch module 200.

[0062] It should be understood that the first and second terminals of comparator 110 are connected to the external live and neutral wires. This means that comparator 110 can acquire the relevant electrical signals of the live and neutral wires for comparison. The electrical signal characteristics (such as voltage, phase, etc.) of the external live and neutral wires will serve as the input signal source for comparator 110. The third terminal of comparator 110 is connected to latch module 200. The result of the comparison of the live and neutral wire signals by comparator 110 will be passed to latch module 200. Latch module 200 may be used to store the output state of comparator 110 so that subsequent circuits can perform corresponding operations based on this state.

[0063] The first terminal of the comparator 110 is also connected to the first terminal of the first dual-channel switch 410 and the second terminal of the second dual-channel switch 420;

[0064] The second terminal of the comparator 110 is also connected to the first terminal of the second dual-channel switch 420 and the second terminal of the first dual-channel switch 410.

[0065] It should be noted that the first terminal of comparator 110 is also connected to the first terminal of the first dual-way switch 410 and the second terminal of the second dual-way switch 420. This allows comparator 110 to be interconnected with the dual-way switches in the circuit. The state of comparator 110 may affect the operating state of the dual-way switches, and the state of the dual-way switches may in turn affect the electrical signal received by comparator 110. The second terminal of comparator 110 is also connected to the first terminal of the second dual-way switch 420 and the second terminal of the first dual-way switch 410. This connection method further constructs a complex circuit relationship between comparator 110 and the dual-way switches. Through these connections, the entire circuit can realize functions such as signal detection, conversion, or control. For example, when the electrical signal of the live and neutral wires changes, comparator 110 can detect this change and adjust the conduction state of the dual-way switches through its connection with the dual-way switches.

[0066] The latch module 200 includes: a signal latch 210;

[0067] The first terminal of the signal latch 210 is connected to the third terminal of the comparator 110; the second terminal of the signal latch 210 is connected to the trigger module 300.

[0068] It should be understood that the first terminal of the signal latch 210 is connected to the third terminal of the comparator 110. This connection may indicate that a certain signal at the output (third terminal) of the comparator 110 needs to be latched by the signal latch 210. The comparator 110 is typically used to compare the magnitudes or other relationships of two input signals, and its output signal may contain a crucial logical judgment result. By connecting to the signal latch 210, this result can be saved at a specific moment for later use. The second terminal of the signal latch 210 is connected to the trigger module 300. This means that the signal stored in the latch (possibly a signal acquired and latched from the comparator 110) can be transmitted to the trigger module 300. The trigger module 300 may perform a trigger operation based on this received signal, such as starting other circuit modules, generating an interrupt signal, or changing a certain state of the entire system. The main function of the signal latch 210 in this system is to latch signals. In digital circuits, a latch can store one or more bits of binary data. Here, it may be to save the result signal from comparator 110 under specific clock cycles or logic conditions, so as to prevent the signal from being lost or changed during transmission or subsequent processing.

[0069] The triggering module 300 includes: a trigger 310;

[0070] The first terminal of the trigger 310 is connected to the second terminal of the signal latch 210; the second terminal of the trigger 310 is connected to the third terminal of the first dual-channel switch 410; the third terminal of the trigger 310 is connected to the third terminal of the second dual-channel switch 420; and the fourth terminal of the trigger 310 is connected to the third terminal of the external control circuit 500.

[0071] It should be understood that the first terminal of the trigger 310 is connected to the second terminal of the signal latch 210. This connection may have a specific functional significance in the overall circuit system. The signal latch 210 may be used to store the state of a certain signal, and this terminal of the trigger 310 is connected to it to receive a specific signal from the signal latch 210, which may affect the triggering condition or internal state of the trigger 310. The second terminal of the trigger 310 is connected to the third terminal of the first dual-channel switch 410. Dual-channel switches are typically used to switch different circuit paths or signal sources. This connection between the trigger 310 and the dual-channel switch may be to control the switching operation of the first dual-channel switch 410 based on the state of the trigger 310, thereby achieving the selection or control of a certain signal path. The third terminal of the trigger 310 is connected to the third terminal of the second dual-channel switch 420. Similar to the connection to the first dual-channel switch 410, this connection is also for controlling the second dual-channel switch 420. When the state of trigger 310 changes, it may affect the operating mode of the second dual-channel switch 420, such as switching between different input signals or determining whether to conduct a specific signal path. The fourth terminal of trigger 310 is connected to the third terminal of external control circuit 500. External control circuit 500 may have overall control or coordination functions for the entire circuit system. The connection between trigger 310 and external control circuit 500 means that it may receive signals from external control circuit 500, thereby adjusting its own state according to external needs or control strategies; at the same time, trigger 310 may also feed back its own state information to external control circuit 500 so that external control circuit 500 can make further decisions or adjust the operating state of other related circuit components.

[0072] In this embodiment, by determining the connection relationships of comparator 110 in comparison module 100, signal latch 210 in latch module 200, trigger 310 in trigger module 300, and the first dual-channel switch 410 and the second dual-channel switch 420 in switch module 400, the external control circuit 500 is checked for port misconnection using the phase information of the AC signal on the live and neutral wire networks at both ends of the misconnection port without the need for additional correction signals. This ensures the accuracy of the emergency lighting system's operation. It can automatically connect to the emergency lighting system on the live and neutral wire network for port verification when AC power is off, avoiding failure of the emergency lighting system due to port misconnection and greatly reducing the complexity of the emergency lighting system.

[0073] Reference Figure 3 , Figure 3 This is a circuit connection diagram of the third embodiment of the mixed-connection verification circuit proposed in this application. The third embodiment of the mixed-connection verification circuit of this application is proposed based on the first and second embodiments described above.

[0074] The mixed connection verification circuit also includes: a voltage divider module 600;

[0075] One end of the voltage divider module 600 is connected to the external live and neutral wires; the other end of the voltage divider module 600 is connected to the comparator module 100 and the switch module 400.

[0076] It should be noted that one end of the voltage divider module 600 is connected to the external live and neutral wires, meaning it directly obtains its input voltage from these external power sources. These external live and neutral wires are the power source for the entire circuit, and the voltage divider module 600 serves to preprocess the input voltage. For example, in a household circuit, the external live and neutral wires provide 220V, and the voltage divider module 600 obtains energy from this power input point. The other end of the voltage divider module 600 is connected to the comparator module 100 and the switch module 400. It transmits the voltage signal after voltage division to both the comparator module 100 and the switch module 400. For the comparator module 100, this divided signal serves as a reference signal, compared with other signals in the comparator module 100 (which may come from other circuit parts or be a pre-set standard signal) to determine if there are any abnormalities such as misconnections. For the switch module 400, this divided signal may affect the switch's state. For example, if the divided signal does not conform to the normal range, the switch module 400 may take protective measures such as cutting off the circuit.

[0077] The voltage divider module 600 includes: a first resistor R1 and a second resistor R2;

[0078] The first end of the first resistor R1 is connected to one of the external live and neutral wires, and the second end of the first resistor R1 is connected to the first end of the second dual-way switch 420 and the second end of the first dual-way switch 410.

[0079] The first end of the second resistor R2 is connected to another wire in the external live and neutral wires, and the second end of the second resistor R2 is connected to the first end of the first dual-way switch 410 and the second end of the second dual-way switch 420.

[0080] It should be understood that the first terminal of the first resistor R1 is connected to one of the external neutral and live wires. Here, the external neutral and live wires refer to either the neutral wire or the live wire from the external power supply. The second terminal of the first resistor R1 is connected to the first terminal of the second dual-way switch 420 and the second terminal of the first dual-way switch 410. This indicates that the first resistor R1 functions as a connector between the external power supply and the dual-way switches in the circuit, and at this connection point, the terminals from different dual-way switches are connected together, possibly for functions such as voltage distribution or signal transmission.

[0081] It should be noted that the first terminal of the second resistor R2 is connected to another wire in the external neutral and live wires, which is different from the wire in the external neutral and live wires connected to the first resistor R1 (if one is a neutral wire, the other is a live wire, and vice versa). The second terminal of the second resistor R2 is connected to the first terminal of the first dual-way switch 410 and the second terminal of the second dual-way switch 420. Similar to the first resistor R1, the second resistor R2 also establishes a connection between the external power supply and the dual-way switches, and connects the different terminals of the two dual-way switches at the connection point to participate in voltage division or other related electrical functions in the circuit. This design and connection method of the voltage divider module 600 may be for achieving specific voltage distribution in the circuit to meet the voltage requirements of subsequent circuit components (such as other devices connected to the dual-way switches), or for signal acquisition, conversion, and other operations.

[0082] Furthermore, this application also proposes a verification device, which includes the mixed-connection verification circuit described above. Since the verification device employs all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0083] Reference Figure 4 , Figure 4 This is a waveform diagram of the third embodiment of the verification device proposed in this application. All the described mixed-connection verification circuits are arranged in parallel;

[0084] The mixed connection verification circuit, after being set in parallel, is connected at one end to the external live and neutral wires and at the other end to another external control circuit 500.

[0085] It should be understood that when the first dual-channel switch 410 is closed, the internal cross-connection verification circuit of the verification device, by comparing the voltage between the live and neutral wires, can obtain the phase information of the AC voltage difference between the live and neutral wires, detect whether the AC voltage difference is in the positive or negative half-cycle, and use the phase information of the AC voltage difference between the live and neutral wires to perform cross-connection correction on the external control circuit 500 within the verification device.

[0086] It should be noted that when the internal ports D1 and D2 of the two verification devices are reversed and mixed on the live and neutral wires, the comparator 110 of the mixed connection verification circuit inside the verification device detects that the AC voltage phase information on the live and neutral wires is opposite, and the output value of the comparator 110 is latched through a latch. When the switch is opened, the signal with AC phase information stored in the latch is used to control the dual-channel switch to connect signal 0 or signal 1 to the internal ports D1 and D2 of the verification device, thereby switching the port connection relationship and completing the verification of the mixed connection of the internal ports D1 and D2 of the verification device.

[0087] It should be understood that when the ports of verification device 1 and verification device 2 are mixed, the AC signals detected in the mixed-connection detection circuit of verification device 1 and verification device 2 are out of phase. When the AC power is off, verification device 1 switches to signal path 1 (2) through a double switch, while verification device 2 remains in signal path 0 (1) through a double switch. Because the neutral and live wire connections of signal path 1 (2) and signal path 0 (1) are opposite, the neutral and live wire connections of the internal ports D1 and D2 of verification device 1 and verification device 2 are aligned.

[0088] In this embodiment, when AC power failure is detected, trigger 310 uses the phase information in the latch to switch the port connection relationship inside the verification device, completing the mixed connection verification. After the mixed connection verification is completed, internal ports D1 of verification device No. 1 and D1 of verification device No. 2 are connected to the neutral line. Internal ports D2 of verification device No. 1 and D2 of verification device No. 2 are connected to the live line. After the mixed connection verification, the situation of mixed internal ports of the verification devices is resolved, ensuring the accuracy of the verification device function when multiple verification devices are connected to the AC network.

[0089] Furthermore, this application also proposes an emergency light, which includes the calibration device described above. Since the emergency light employs all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0090] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0091] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A mixed-connection verification circuit, characterized in that, The mixed-connection verification circuit includes: a comparison module, a latch module, a trigger module, and a switch module; The comparison module is connected to the external live and neutral wires, and the comparison module is also connected to the latch module; the latch module is also connected to the trigger module; the trigger module is also connected to the external control circuit and the switch module respectively; the switch module is also connected to the external control circuit. The comparison module is used to compare the voltages on the external live and neutral wires to obtain the voltage difference, and to obtain phase information based on the voltage difference. The latch module is used to latch the phase information; The trigger module is used to correct the connection relationship between the external control circuit and the external neutral and live wires by using the phase information when the external control circuit is detected to be AC ​​powered down.

2. The mixed-connection verification circuit as described in claim 1, characterized in that, The switching module includes: a first dual-channel switch and a second dual-channel switch; The first and second terminals of the first dual-way switch are connected to the external live and neutral wires, and the third terminal of the first dual-way switch is connected to the first terminal of the external control circuit and the second terminal of the trigger module. The first and second terminals of the second dual-way switch are connected to the external live and neutral wires, and the third terminal of the second dual-way switch is connected to the second terminal of the external control circuit and the third terminal of the trigger module.

3. The mixed-connection verification circuit as described in claim 2, characterized in that, The comparison module includes: a comparator; The first and second terminals of the comparator are connected to the external live and neutral wires; the third terminal of the comparator is connected to the latch module. The first terminal of the comparator is also connected to the first terminal of the first dual-way switch and the second terminal of the second dual-way switch; The second terminal of the comparator is also connected to the first terminal of the second dual-channel switch and the second terminal of the first dual-channel switch.

4. The mixed-connection verification circuit as described in claim 3, characterized in that, The latching module includes: a signal latch; The first terminal of the signal latch is connected to the third terminal of the comparator; the second terminal of the signal latch is connected to the trigger module.

5. The mixed-connection verification circuit as described in claim 4, characterized in that, The triggering module includes: a trigger; The first terminal of the trigger is connected to the second terminal of the signal latch; the second terminal of the trigger is connected to the third terminal of the first dual-channel switch; the third terminal of the trigger is connected to the third terminal of the second dual-channel switch; and the fourth terminal of the trigger is connected to the third terminal of the external control circuit.

6. The mixed-connection verification circuit as described in claim 4, characterized in that, The mixed connection verification circuit also includes: a voltage divider module; One end of the voltage divider module is connected to the external live and neutral wires; the other end of the voltage divider module is connected to the comparator module and the switch module.

7. The mixed-connection verification circuit as described in claim 6, characterized in that, The voltage divider module includes: a first resistor and a second resistor; The first end of the first resistor is connected to one of the external live and neutral wires, and the second end of the first resistor is connected to the first end of the second dual-way switch and the second end of the first dual-way switch. The first end of the second resistor is connected to another wire in the external live and neutral wires, and the second end of the second resistor is connected to the first end of the first dual-way switch and the second end of the second dual-way switch.

8. A verification device, characterized in that, The verification device includes at least one mixed-connection verification circuit as described in any one of claims 1 to 7.

9. The verification device as described in claim 8, characterized in that, The aforementioned mixed-connection verification circuits are connected in parallel; The mixed connection verification circuit, after being set in parallel, is connected at one end to the external live and neutral wires and at the other end to another external control circuit.

10. An emergency light, characterized in that, The emergency light includes the calibration device as described in any one of claims 8 to 9.

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