Voltage detection closing circuit structure

Abstract

The utility model relates to a voltage detection closing circuit structure, comprising a power supply management LED driving module, a release driving module, a power supply module, a relay output module and a power supply filtering module, the output end of the power supply management LED driving module is respectively connected with the input end of the release driving module and the input end of the relay output module; the output end of the power supply module is connected with the input end of the power supply filtering module, and the power supply filtering module provides working voltage for the power supply management LED driving module, the release driving module and the relay output module. According to the utility model, the working state of the circuit is intuitively reflected through the on-off state of the LED, once a fault occurs, the problem can be quickly positioned through the display condition of the LED, the troubleshooting process is simplified, meanwhile, the single-throw switch plays a key role in the circuit, and the switch-on state signal of the single-throw switch can trigger the related operation of the circuit, so that the fault detection efficiency is improved. And the circuit is ensured to work according to the preset logic.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure-sensitive closing switches, in particular to a pressure-sensitive closing switch circuit structure. Background Art

[0002] In the power system, the voltage detection closing circuit structure plays a vital role. It is responsible for automatically performing the closing operation when the grid voltage returns to normal, thereby restoring power supply. The traditional voltage detection closing circuit structure may not be able to accurately determine whether the circuit is in the closed state, which may result in the failure to disconnect the circuit in time when the grid voltage is abnormal, or the failure to automatically perform the closing operation when the grid voltage returns to normal, which may not only damage the power equipment, but also threaten the stable operation of the grid. Summary of the invention

[0003] In view of this, the purpose of the utility model is to provide a circuit structure for detecting voltage closing with simple circuit, high reliability and strong stability.

[0004] In order to achieve the above purpose, the utility model adopts such a pressure-detecting closing circuit structure, including a power management LED driver module, a release driver module, a power module, a relay output module, and a power filter module. The output end of the power management LED driver module is respectively connected to the input end of the release driver module and the input end of the relay output module, the output end of the power module is connected to the input end of the power filter module, and the power filter module provides working voltage for the power management LED driver module, the release driver module, and the relay output module.

[0005] The utility model is further configured as a power management LED driving module including a linear regulator P1, an LED driving circuit, a delay control circuit, a voltage regulating circuit, and a closing state signal circuit. The output end of the linear regulator P1 is connected to the input end of the LED driving circuit, the delay control circuit and the voltage regulating circuit are respectively connected to the control pin end of the linear regulator P1 through control signals, and the closing state signal circuit is connected to the eleventh pin end of the linear regulator P1 through signal transmission.

[0006] The utility model is further configured that the closing state signal circuit is a single-throw switch J8, one end of the single-throw switch J8 is connected to the eleventh pin end of the linear regulator P1, and the other end of the single-throw switch J8 is grounded together with the LED driving circuit.

[0007] The utility model is further configured as a power supply module including resistors RV1-RV2, resistors R1-R2, a transformer E1, diodes D1-D7, a diode D10, a capacitor C1, a capacitor C4, an electrolytic capacitor C5-C6, an electrolytic capacitor C8-C9, an inductor L3-L4, an offline switch IC1, a power output terminal J2, and a power input terminal J4. The first pin end of the primary side of the transformer E1 is respectively connected to one end of the resistor RV2, one end of the resistor RV1, and an input end of the power input terminal J4. The third pin end of the secondary side of the transformer E1 is respectively connected to the other end of the resistor RV2, the other end of the resistor RV1, and an output end of the power output terminal J2. The second pin end of the primary side of the transformer E1 is respectively connected to one end of the capacitor C1, the positive electrode of the diode D3, and the negative electrode of the diode D2. The fourth pin end of the secondary side of the transformer E1 is respectively connected to the other end of the capacitor C1, the positive electrode of the diode D5, and the negative electrode of the diode D6. The negative electrode of the diode D3 is respectively connected to the negative electrode of the diode D5, the positive electrode of the diode D7, and the negative electrode of the diode D8. The positive electrode of the electrolytic capacitor C6 is respectively connected to the negative electrode of the diode D7, one end of the inductor L3, and the power supply voltage VCC. The drain of the offline switch IC1 is respectively connected to the positive electrode of the electrolytic capacitor C5 and the other end of the inductor L3. The source of the offline switch IC1 is respectively connected to one end of the capacitor C4, one end of the resistor R2, the negative electrode of the diode D1, the negative electrode of the electrolytic capacitor C8, and one end of the inductor L4. The feedback end of the offline switch IC1 is respectively connected to the other end of the resistor R2 and one end of the resistor R1. The other end of the resistor R1 is respectively connected to the positive electrode of the electrolytic capacitor C8 and the negative electrode of the diode D4, the positive electrode of the electrolytic capacitor C9 is respectively connected to the other end of the inductor L4, the positive electrode of the diode D4, the negative electrode of the diode D10, and the high level, the bypass end of the offline switch IC1 is connected to the other end of the capacitor C4, the positive electrode of the diode D10, the negative electrode of the electrolytic capacitor C9, the positive electrode of the diode D1, the negative electrode of the electrolytic capacitor C5, the negative electrode of the electrolytic capacitor C6, the positive electrode of the diode D6, and the positive electrode of the diode D2 are all grounded.

[0008] The utility model is further configured that the release driving module includes a field effect tube Q1, a resistor R10, a resistor RX2, a diode D9, a release TR1, an output terminal J3, and an output terminal J5. The gate of the field effect tube Q1 is respectively connected to one end of the resistor R10 and one end of the resistor RX2, the other end of the resistor RX2 is connected to the sixteenth pin end of the linear regulator P1, the other end of the resistor R10 and the source of the field effect tube Q1 are both grounded, the drain of the field effect tube Q1 is respectively connected to the positive electrode of the diode D9 and one end of the output terminal J5, one end of the release TR1 is connected to the other end of the output terminal J5, the other end of the release TR1 is connected to one end of the output terminal J3, and the other end of the output terminal J3 and the cathode of the diode D9 are both connected to the power supply voltage VCC.

[0009] The utility model is further configured as a relay output module including a resistor R15, a transistor Q2, a diode D11, a double-pole double-throw relay RLY1, and a closed passive contact output terminal J7, wherein the base of the transistor Q2 is connected to one end of the resistor R15, the other end of the resistor R15 is connected to the twenty-first pin end of the linear regulator P1, the emitter of the transistor Q2 is grounded, the collector of the transistor Q2 is respectively connected to the positive electrode of the diode D11 and one end of the coil of the double-pole double-throw relay RLY1, the other end of the coil of the double-pole double-throw relay RLY1 and the negative electrode of the diode D11 are both connected to a high level, the first pin end of the closed passive contact output terminal J7 is connected to any group of normally closed contact ends of the double-pole double-throw relay RLY1, and the second pin end of the closed passive contact output terminal J7 is connected to the common contact end of the group corresponding to the first pin end.

[0010] The utility model is further configured as a power supply filter module including a diode D8, a magnetic bead L1, a magnetic bead L3, resistors R4 to R7, a capacitor C7, and an electrolytic capacitor C2. The cathode of the diode D8 is connected to one end of the magnetic bead L1, the other end of the magnetic bead L1 is connected to one end of the resistor R5, the other end of the resistor R5 is connected to one end of the resistor R4, the other end of the resistor R4 is respectively connected to one end of the resistor R6, one end of the resistor R7, the positive electrode of the electrolytic capacitor C2, one end of the capacitor C7, and the thirteenth pin end of the linear regulator P1, one end of the magnetic bead L3 is respectively connected to the other end of the resistor R6, the other end of the resistor R7, the negative electrode of the electrolytic capacitor C2, and the other end of the capacitor C7, the other end of the magnetic bead L3 is grounded, and the anode of the diode D8 is connected to the voltage source VC.

[0011] Compared with the prior art, the beneficial effect of the utility model is that the power management LED driver module intuitively reflects the working status of the circuit through the on and off status of the LED. Once a fault occurs, the problem can be quickly located through the display of the LED, which simplifies the troubleshooting process. At the same time, the single-throw switch plays a key role in the circuit. Its closing state signal can trigger related operations of the circuit to ensure that the circuit works according to the predetermined logic. It filters the electric energy output by the power module through the power filter module, which can eliminate or reduce noise and interference in the power supply, thereby ensuring the stable operation of the entire circuit. The entire circuit structure is simple, and the connection between the modules is tight and reliable, which improves the reliability and stability of the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a circuit principle block diagram of an embodiment of the utility model.

[0013] Figure 2 This is a circuit schematic diagram of a power management LED driver module according to an embodiment of the utility model.

[0014] Figure 3 It is a schematic diagram of a power module circuit of an embodiment of the utility model.

[0015] Figure 4 It is a circuit schematic diagram of a release drive module according to an embodiment of the utility model.

[0016] Figure 5 It is a circuit schematic diagram of a relay output module according to an embodiment of the utility model.

[0017] Figure 6 It is a circuit schematic diagram of a power filter module according to an embodiment of the utility model. DETAILED DESCRIPTION

[0018] like Figure 1-Figure 6 As shown, an embodiment of the utility model provides a circuit structure for detecting pressure closing, including a power management LED driver module, a release driver module, a power module, a relay output module, and a power filter module. The output end of the power management LED driver module is respectively connected to the input end of the release driver module and the input end of the relay output module, the output end of the power module is connected to the input end of the power filter module, and the power filter module provides working voltage for the power management LED driver module, the release driver module, and the relay output module.

[0019] like Figure 2As shown, the power management LED driver module includes a linear regulator P1, an LED driver circuit, a delay control circuit, a voltage regulation circuit, and a closing state signal circuit. The output end of the linear regulator P1 is connected to the input end of the LED driver circuit. The delay control circuit and the voltage regulation circuit are respectively connected to the control pin end of the linear regulator P1 through a control signal. The closing state signal circuit is connected to the eleventh pin end of the linear regulator P1 through signal transmission. The closing state signal circuit is a single-throw switch J8. One end of the single-throw switch J8 is connected to the eleventh pin end of the linear regulator P1. The other end of the single-throw switch J8 is grounded together with the LED driver circuit. Specifically, the LED driver circuit mainly consists of light-emitting diodes LED1-1 to LED1-2. , light emitting diodes LED2-1~LED2-2, light emitting diodes LED3-1~LED3-2, and resistors R11~R16. The delay control circuit is mainly composed of switch packages SW1~SW2, and the voltage regulation circuit is mainly composed of switch packages SW3~SW4. Specifically, the first pin end of the switch package SW1 is connected to the twenty-third pin end of the linear regulator P1, the second pin end of the switch package SW1 is connected to the twenty-second pin end of the linear regulator P1, the first pin end of the switch package SW2 is connected to the fifth pin end of the linear regulator P1, the second pin end of the switch package SW2 is connected to the fourth pin end of the linear regulator P1, and the third pin end of the switch package SW2 is connected to the third pin end of the linear regulator P1. The fourth pin end of the switch package SW2 is connected to the second pin end of the linear regulator P1, the first pin end of the switch package SW3 is connected to the ninth pin end of the linear regulator P1, the second pin end of the switch package SW3 is connected to the eighth pin end of the linear regulator P1, the third pin end of the switch package SW3 is connected to the seventh pin end of the linear regulator P1, the fourth pin end of the switch package SW3 is connected to the sixth pin end of the linear regulator P1, the first pin end of the switch package SW4 is connected to the twelfth pin end of the linear regulator P1, the second pin end of the switch package SW4 is connected to the tenth pin end of the linear regulator P1, the third pin end and the fourth pin end of the switch package SW1, the fifth pin end and the sixth pin end of the switch package SW2 and The seventh pin end and the eighth pin end, the fifth pin end and the sixth pin end and the seventh pin end and the eighth pin end of the switch package SW3, and the third pin end and the fourth pin end of the switch package SW4 are all grounded, one end of the resistor R16 is connected to the twentieth pin end of the linear regulator P1, and the other end is connected to the positive electrode of the light-emitting diode LED1-1, one end of the resistor R15 is connected to the nineteenth pin end of the linear regulator P1, and the other end is connected to the positive electrode of the light-emitting diode LED1-2, one end of the resistor R14 is connected to the eighteenth pin end of the linear regulator P1, and the other end is connected to the positive electrode of the light-emitting diode LED2-1, one end of the resistor R13 is connected to the seventeenth pin end of the linear regulator P1, and the other end is connected to the positive electrode of the light-emitting diode LED2-2,One end of the resistor R12 is connected to the fifteenth pin of the linear regulator P1, and the other end is connected to the positive electrode of the light-emitting diode LED3-1. One end of the resistor R11 is connected to the fourteenth pin of the linear regulator P1, and the other end is connected to the positive electrode of the light-emitting diode LED3-2. One end of the single-pole single-throw switch J8 is connected to the eleventh end of the linear regulator P1. The other end of the single-pole single-throw switch J8, the negative electrode of the light-emitting diode LED1-1, the negative electrode of the light-emitting diode LED1-2, the negative electrode of the light-emitting diode LED2-1, the negative electrode of the light-emitting diode LED2-2, the negative electrode of the light-emitting diode LED3-1, and the negative electrode of the light-emitting diode LED3-2 are all grounded.

[0020] like Figure 3 As shown, the power supply module includes resistors RV1-RV2, resistors R1-R2, a transformer E1, diodes D1-D7, a diode D10, a capacitor C1, a capacitor C4, an electrolytic capacitor C5-C6, an electrolytic capacitor C8-C9, an inductor L3-L4, an offline switch IC1, a power output terminal J2, and a power input terminal J4. The first pin end of the primary side of the transformer E1 is respectively connected to one end of the resistor RV2, one end of the resistor RV1, and an input end of the power input terminal J4. The third pin end of the secondary side of the transformer E1 is respectively connected to the other end of the resistor RV2, the other end of the resistor RV1, and the output end of the power output terminal J2. The second pin end of the primary side of the transformer E1 is respectively connected to one end of the capacitor C1, the positive electrode of the diode D3, and the negative electrode of the diode D2. The fourth pin end of the secondary side of the transformer E1 is respectively connected to the other end of the capacitor C1, the positive electrode of the diode D5, and the negative electrode of the diode D6. The negative electrode of the diode D3 is respectively connected to the negative electrode of the diode D5, the positive electrode of the diode D7, and the negative electrode of the diode D8. The positive electrode of the electrolytic capacitor C6 is connected to the negative electrode of the diode D7, one end of the inductor L3, and the power supply voltage VCC. The drain of the offline switch IC1 is connected to the positive electrode of the electrolytic capacitor C5 and the other end of the inductor L3. The source of the offline switch IC1 is connected to one end of the capacitor C4, one end of the resistor R2, the negative electrode of the diode D1, the negative electrode of the electrolytic capacitor C8, and one end of the inductor L4. The feedback end of the offline switch IC1 is connected to the other end of the resistor R2 and one end of the resistor R1. The other end of the resistor R1 is respectively connected to the positive electrode of the electrolytic capacitor C8 and the negative electrode of the diode D4. The positive electrode of the electrolytic capacitor C9 is respectively connected to the other end of the inductor L4, the positive electrode of the diode D4, the negative electrode of the diode D10 and the high level. The bypass end of the offline switch IC1 is connected to the other end of the capacitor C4. The positive electrode of the diode D10, the negative electrode of the electrolytic capacitor C9, the positive electrode of the diode D1, the negative electrode of the electrolytic capacitor C5, the negative electrode of the electrolytic capacitor C6, the positive electrode of the diode D6 and the positive electrode of the diode D2 are all grounded.

[0021] like Figure 4As shown, the release driving module includes a field effect tube Q1, a resistor R10, a resistor RX2, a diode D9, a release TR1, an output terminal J3, and an output terminal J5. The gate of the field effect tube Q1 is respectively connected to one end of the resistor R10 and one end of the resistor RX2, the other end of the resistor RX2 is connected to the sixteenth pin end of the linear regulator P1, the other end of the resistor R10 and the source of the field effect tube Q1 are both grounded, the drain of the field effect tube Q1 is respectively connected to the positive electrode of the diode D9 and one end of the output terminal J5, one end of the release TR1 is connected to the other end of the output terminal J5, the other end of the release TR1 is connected to one end of the output terminal J3, and the other end of the output terminal J3 and the cathode of the diode D9 are both connected to the power supply voltage VCC.

[0022] like Figure 5 As shown, the relay output module includes a resistor R15, a transistor Q2, a diode D11, a double-pole double-throw relay RLY1, and a closed passive contact output terminal J7. The base of the transistor Q2 is connected to one end of the resistor R15, and the other end of the resistor R15 is connected to the twenty-first pin end of the linear regulator P1. The emitter of the transistor Q2 is grounded, and the collector of the transistor Q2 is respectively connected to the positive electrode of the diode D11 and one end of the coil of the double-pole double-throw relay RLY1. The other end of the coil of the double-pole double-throw relay RLY1 and the negative electrode of the diode D11 are both connected to a high level. The first pin end of the closed passive contact output terminal J7 is connected to any group of normally closed contact ends of the double-pole double-throw relay RLY1, and the second pin end of the closed passive contact output terminal J7 is connected to the common contact end of the group corresponding to the first pin end.

[0023] like Figure 6 As shown, the power filter module includes a diode D8, a magnetic bead L1, a magnetic bead L3, resistors R4 to R7, a capacitor C7, and an electrolytic capacitor C2. The cathode of the diode D8 is connected to one end of the magnetic bead L1, the other end of the magnetic bead L1 is connected to one end of the resistor R5, the other end of the resistor R5 is connected to one end of the resistor R4, the other end of the resistor R4 is respectively connected to one end of the resistor R6, one end of the resistor R7, the positive electrode of the electrolytic capacitor C2, one end of the capacitor C7, and the thirteenth pin end of the linear regulator P1, one end of the magnetic bead L3 is respectively connected to the other end of the resistor R6, the other end of the resistor R7, the negative electrode of the electrolytic capacitor C2, and the other end of the capacitor C7, the other end of the magnetic bead L3 is grounded, and the anode of the diode D8 is connected to the voltage source VC.

[0024] Of course, in addition to the above-mentioned embodiments, the utility model may also have many other embodiments. Without departing from the essential technical solution content of the utility model, technical personnel familiar with the field may make various corresponding changes and deformations according to the utility model, and these changes or deformations are equivalent to the technical solution in this patent. Then these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the utility model, and the utility model creation is in line with the applicant's actual R&D capabilities and resource conditions.

Claims

1. A circuit structure for detecting a voltage-closing switch, characterized in that: It includes a power management LED driver module, a release driver module, a power module, a relay output module, and a power filter module. The output end of the power management LED driver module is respectively connected to the input end of the release driver module and the input end of the relay output module, the output end of the power module is connected to the input end of the power filter module, and the power filter module provides working voltage for the power management LED driver module, the release driver module, and the relay output module.

2. The circuit structure for detecting closing of a circuit under pressure according to claim 1, characterized in that: The power management LED driving module includes a linear regulator P1, an LED driving circuit, a delay control circuit, a voltage regulation circuit, and a closing state signal circuit. The output end of the linear regulator P1 is connected to the input end of the LED driving circuit, the delay control circuit and the voltage regulation circuit are respectively connected to the control pin end of the linear regulator P1 through control signals, and the closing state signal circuit is connected to the eleventh pin end of the linear regulator P1 through signal transmission.

3. The circuit structure for detecting closing of a circuit under pressure according to claim 2 is characterized in that: The closing state signal circuit is a single-throw switch J8, one end of the single-throw switch J8 is connected to the eleventh pin end of the linear regulator P1, and the other end of the single-throw switch J8 is grounded together with the LED driving circuit.

4. The circuit structure for detecting closing of a circuit under pressure according to claim 1, characterized in that: The power module includes resistors RV1-RV2, resistors R1-R2, transformer E1, diodes D1-D7, diode D10, capacitor C1, capacitor C4, electrolytic capacitors C5-C6, electrolytic capacitors C8-C9, inductors L3-L4, offline switch IC1, power output terminal J2, and power input terminal J4. The first pin end of the primary side of the transformer E1 is respectively connected to one end of the resistor RV2, one end of the resistor RV1, and the input end of the power input terminal J4. The third pin end of the secondary side of the transformer E1 is respectively connected to the other end of the resistor RV2, the other end of the resistor RV1, and the output end of the power output terminal J2. The second pin end of the primary side of the transformer E1 is respectively connected to one end of the capacitor C1, the positive electrode of the diode D3, and the negative electrode of the diode D2. The fourth pin end of the secondary side of the transformer E1 is respectively connected to the other end of the capacitor C1, the positive electrode of the diode D5, and the negative electrode of the diode D6. The negative electrode of the diode D3 is respectively connected to the negative electrode of the diode D5, the positive electrode of the diode D7, and the voltage source V C, the positive electrode of the electrolytic capacitor C6 is respectively connected to the negative electrode of the diode D7, one end of the inductor L3, and the power supply voltage VCC, the drain of the offline switch IC1 is respectively connected to the positive electrode of the electrolytic capacitor C5 and the other end of the inductor L3, the source of the offline switch IC1 is respectively connected to one end of the capacitor C4, one end of the resistor R2, the negative electrode of the diode D1, the negative electrode of the electrolytic capacitor C8, and one end of the inductor L4, the feedback end of the offline switch IC1 is respectively connected to the other end of the resistor R2 and one end of the resistor R1, the The other end of the resistor R1 is respectively connected to the positive electrode of the electrolytic capacitor C8 and the negative electrode of the diode D4. The positive electrode of the electrolytic capacitor C9 is respectively connected to the other end of the inductor L4, the positive electrode of the diode D4, the negative electrode of the diode D10, and the high level. The bypass end of the offline switch IC1 is connected to the other end of the capacitor C4. The positive electrode of the diode D10, the negative electrode of the electrolytic capacitor C9, the positive electrode of the diode D1, the negative electrode of the electrolytic capacitor C5, the negative electrode of the electrolytic capacitor C6, the positive electrode of the diode D6, and the positive electrode of the diode D2 are all grounded.

5. The circuit structure for detecting closing of a circuit under pressure according to claim 2 is characterized in that: The release driving module includes a field effect tube Q1, a resistor R10, a resistor RX2, a diode D9, a release TR1, an output terminal J3, and an output terminal J5. The gate of the field effect tube Q1 is respectively connected to one end of the resistor R10 and one end of the resistor RX2, the other end of the resistor RX2 is connected to the sixteenth pin end of the linear regulator P1, the other end of the resistor R10 and the source of the field effect tube Q1 are both grounded, the drain of the field effect tube Q1 is respectively connected to the positive electrode of the diode D9 and one end of the output terminal J5, one end of the release TR1 is connected to the other end of the output terminal J5, the other end of the release TR1 is connected to one end of the output terminal J3, and the other end of the output terminal J3 and the cathode of the diode D9 are both connected to the power supply voltage VCC.

6. The circuit structure for detecting closing of a circuit under pressure according to claim 2, characterized in that: The relay output module includes a resistor R15, a transistor Q2, a diode D11, a double-pole double-throw relay RLY1, and a closed passive contact output terminal J7. The base of the transistor Q2 is connected to one end of the resistor R15, and the other end of the resistor R15 is connected to the twenty-first pin end of the linear regulator P1. The emitter of the transistor Q2 is grounded, and the collector of the transistor Q2 is respectively connected to the positive electrode of the diode D11 and one end of the coil of the double-pole double-throw relay RLY1. The other end of the coil of the double-pole double-throw relay RLY1 and the negative electrode of the diode D11 are both connected to a high level. The first pin end of the closed passive contact output terminal J7 is connected to any group of normally closed contact ends of the double-pole double-throw relay RLY1, and the second pin end of the closed passive contact output terminal J7 is connected to the common contact end of the group corresponding to the first pin end.

7. The circuit structure for detecting closing of a circuit under pressure according to claim 2, characterized in that: The power supply filter module includes a diode D8, a magnetic bead L1, a magnetic bead L3, resistors R4 to R7, a capacitor C7, and an electrolytic capacitor C2. The cathode of the diode D8 is connected to one end of the magnetic bead L1, the other end of the magnetic bead L1 is connected to one end of the resistor R5, the other end of the resistor R5 is connected to one end of the resistor R4, the other end of the resistor R4 is respectively connected to one end of the resistor R6, one end of the resistor R7, the positive electrode of the electrolytic capacitor C2, one end of the capacitor C7, and the thirteenth pin end of the linear regulator P1, one end of the magnetic bead L3 is respectively connected to the other end of the resistor R6, the other end of the resistor R7, the negative electrode of the electrolytic capacitor C2, and the other end of the capacitor C7, the other end of the magnetic bead L3 is grounded, and the anode of the diode D8 is connected to the voltage source VC.

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