Staged explosion-proof mining lamp control circuit

Abstract

The utility model discloses a staged explosion-proof mining lamp control circuit, which comprises a drive circuit and a control circuit, and the control circuit comprises a first-stage control branch circuit, a second-stage control branch circuit, a third-stage control branch circuit, a fourth-stage control branch circuit, a fifth-stage control branch circuit and a sixth-stage control branch circuit. According to the utility model, the LED lamp of the mining lamp is divided into a plurality of stages, and different control drive circuits are configured for each stage, so that the single-path control is more stable, and the cable is low in power consumption and not easy to explode.

Description

TECHNICAL FIELD

[0001] The utility model relates to an explosion -proof LED lamp, specifically is a stage type explosion -proof mine lamp control circuit. BACKGROUND

[0002] The mine lamp requires good explosion -proof performance, and the current mine lamp is multiple LED lamps installed on the lamp holder, utilizes a control circuit to unify the control of multiple LED lamps, and in the special scene of the mine, the mode that one control circuit controls all LED lamps easily leads to large cable power consumption, temperature rise and explosion. UTILITY MODEL CONTENTS

[0003] In order to solve the defects of the prior art, the utility model provides a stage type explosion -proof mine lamp control circuit, the LED lamp of the utility model divides into multiple stages, and different control drive circuits are configured for each stage, single -way control is more stable, cable power consumption is low, and explosion is not easy.

[0004] In order to realize the above technical purpose, the utility model adopts the following technical scheme: a stage type explosion -proof mine lamp control circuit, including drive circuit and control circuit, the control circuit includes first stage control branch circuit, second stage control branch circuit, third stage control branch circuit, fourth stage control branch circuit, fifth stage control branch circuit, sixth stage control branch circuit;

[0005] The input end of first stage control branch circuit is connected with drive circuit, and the output end is connected with first stage LED;The input end of second stage control branch circuit is connected with drive circuit, and the output end is connected with second stage LED;The input end of third stage control branch circuit is connected with drive circuit, and the output end is connected with third stage LED;The input end of fourth stage control branch circuit is connected with drive circuit, and the output end is connected with fourth stage LED;The input end of fifth stage control branch circuit is connected with drive circuit, and the output end is connected with fifth stage LED;The input end of sixth stage control branch circuit is connected with drive circuit, and the output end is connected with sixth stage LED.

[0006] The driving circuit comprises a constant current chip U6 and 10 groups of driving groups, each of the driving groups comprises a MOS tube, a first resistor and a second resistor, one end of the first resistor is connected to the gate of the MOS tube, the other end of the first resistor is used as the B end of the driving group, one end of the second resistor is connected to the gate of the MOS tube, the other end of the second resistor is connected to the source of the MOS tube and is used as the A end of the driving group together, and the drain of the MOS tube is used as the C end of the driving group; the B ends of the 10 groups of driving groups and the 4-pin of the constant current chip U6 are connected to a capacitor C2, the capacitor C2 is connected to the 1-pin of the constant current chip U6, the C ends of the 10 groups of driving groups are connected to a resistor R37, the resistor R37 is connected to the 1-pin of the constant current chip U6, the A end of the first group is connected to a resistor R68, the 3-pin of the constant current chip U6 and a resistor R58, the resistor R68, the 2-pin and the 5-pin of the constant current chip U6 are grounded, the resistor R58 is connected to the 1-pin of the constant current chip U6, the A ends of the second to ninth groups of driving groups are respectively connected to third resistors, and the third resistors are grounded; the 4-pin of the constant current chip U6 is further connected to a resistor R36, the resistor R36 is connected to a resistor R32, and the resistor R32 is connected to the power supply circuit; the resistor R37 and the C ends of the 10 groups of driving groups are used as the output end of the driving circuit together.

[0007] The second-stage control branch circuit comprises a constant current chip U1, the 4-pin of the constant current chip U1 is connected to a resistor R2, a resistor R3 and the gate of a MOS tube Q1; the resistor R2 is connected to a resistor R1, and the resistor R1 is connected to the power supply circuit; the resistor R3 is connected to the 3-pin of the constant current chip U1; the source of the MOS tube Q1 is connected to the 3-pin of the constant current chip U1; the drain of the MOS tube Q1 is connected to the second-stage LED; the 3-pin of the constant current chip U1 is further connected to the second-stage LED, a resistor R4 and a resistor R5, and the resistor R4, the resistor R5, the 1-pin, the 2-pin and the 5-pin of the constant current chip U1 are connected to the drain of a MOS tube Q2 of the third-stage control branch circuit together.

[0008] The fourth-stage control branch circuit comprises a constant current chip U3, the 4-pin of the constant current chip U3 is connected to a resistor R12, a resistor R13 and the gate of a MOS tube Q3; the resistor R12 is connected to a resistor R11, and the resistor R11 is connected to the power supply circuit; the resistor R13 is connected to the 3-pin of the constant current chip U3; the source of the MOS tube Q3 is connected to the 3-pin of the constant current chip U3; the drain of the MOS tube Q3 is connected to the fourth-stage LED; the 3-pin of the constant current chip U3 is further connected to the fourth-stage LED, a resistor R14, a resistor R15 and a resistor R16, and the resistor R14, the resistor R15, the resistor R16, the 1-pin, the 2-pin and the 5-pin of the constant current chip U3 are connected to the drain of a MOS tube Q4 of the fifth-stage control branch circuit together.

[0009] The fifth stage control branch circuit comprises a constant current chip U4, the 4-pin of the constant current chip U4 is connected with a resistor R18 and a resistor R19; the resistor R18 is connected with a resistor R17, and the resistor R17 is connected with a power supply circuit; the resistor R19 is connected with a resistor R21 and the gate of a MOS tube Q4, and the resistor R21 is connected with the 3-pin of the constant current chip U4; the source of the MOS tube Q4 is connected with the 3-pin of the constant current chip U4; the drain of the MOS tube Q4 is connected with a fifth stage LED; the 3-pin of the constant current chip U4 is also connected with the fifth stage LED, a resistor R23, a resistor R24 and a resistor R25, and the resistor R23, the resistor R24, the resistor R25, the 1-pin, the 2-pin and the 5-pin of the constant current chip U4 are commonly connected with the drain of a MOS tube Q6 of the sixth stage control branch circuit; the resistor R18 is also connected with a resistor R20, the resistor R20 is connected with a resistor R22 and the gate of a MOS tube Q5, and the resistor R22 is connected with the 3-pin of the constant current chip U4; the source of the MOS tube Q5 is connected with the 3-pin of the constant current chip U4, and the drain of the MOS tube Q5 is connected with the fourth stage control branch circuit.

[0010] The power supply circuit comprises a fuse FU1, a voltage-dependent resistor RV1, a rectifier bridge DB1, a capacitor CX1, a voltage-dependent resistor RV2 and a capacitor C1; one end of the voltage-dependent resistor RV1, one end of the rectifier bridge DB1 and the fuse F1 are connected to a live wire AC1, and the other end of the voltage-dependent resistor RV1 and the other end of the rectifier bridge B1 are connected to a neutral wire AC2; the rectifier bridge DB1 is grounded; one pin of the rectifier bridge DB1 is grounded through the voltage-dependent resistor RV2 and grounded through the capacitor C1.

[0011] In conclusion, the utility model achieves the following technical effects:

[0012] The constant current driving circuit is arranged to output constant current to ensure the stability of the industrial and mining lamp, a plurality of driving groups are arranged to further stabilize the constant current, the explosion-proof effect is enhanced, the LED of different stages is arranged to cooperate with the driving control circuit of different stages, the phased control is realized, the power consumption of the cable is low, and the explosion-proof performance is good. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a schematic diagram of a phased explosion-proof industrial and mining lamp control circuit provided by the utility model embodiment;

[0014] Figure 2 is a schematic diagram of a power supply circuit;

[0015] Figure 3 is a schematic diagram of a driving circuit;

[0016] Figure 4 is a schematic diagram of a control circuit. DETAILED DESCRIPTION

[0017] The utility model will be further explained in detail in combination with the drawings.

[0018] The specific embodiments are merely illustrative of the present application and should not be taken in a limiting sense. Without further restrictions, modifications that do not constitute inventive steps and contribute nothing to the advancement of the art are deemed permissible to those skilled in the art, and within the scope of the present application.

[0019] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0021] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0022] In the present application, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0023] Embodiment:

[0024] A stage type explosion-proof mine lamp control circuit, comprising a driving circuit 2 and a control circuit, the control circuit comprising a first stage control branch circuit, a second stage control branch circuit, a third stage control branch circuit, a fourth stage control branch circuit, a fifth stage control branch circuit, a sixth stage control branch circuit;

[0025] The input end of the first stage control branch circuit is connected to the driving circuit 2, and the output end is connected to the first stage LED; the input end of the second stage control branch circuit is connected to the driving circuit 2, and the output end is connected to the second stage LED; the input end of the third stage control branch circuit is connected to the driving circuit 2, and the output end is connected to the third stage LED; the input end of the fourth stage control branch circuit is connected to the driving circuit 2, and the output end is connected to the fourth stage LED; the input end of the fifth stage control branch circuit is connected to the driving circuit 2, and the output end is connected to the fifth stage LED; the input end of the sixth stage control branch circuit is connected to the driving circuit 2, and the output end is connected to the sixth stage LED.

[0026] Further comprising a power supply circuit 1, the output end of the power supply circuit 1 being connected to the first stage control branch circuit, the second stage control branch circuit, the third stage control branch circuit, the fourth stage control branch circuit, the fifth stage control branch circuit, the sixth stage control branch circuit, and the driving circuit 2.

[0027] As shown in Figure 2 The power supply circuit 1 comprises a fuse FU1, a voltage-dependent resistor RV1, a rectifier bridge DB1, a capacitor CX1, a voltage-dependent resistor RV2, and a capacitor C1. One end of the voltage-dependent resistor RV1, one end of the rectifier bridge DB1, and the fuse F1 are connected to the live wire AC1, and the other end of the voltage-dependent resistor RV1 and the other end of the rectifier bridge B1 are connected to the neutral wire AC2. The rectifier bridge DB1 is grounded. One pin of the rectifier bridge DB1 is grounded through the voltage-dependent resistor RV2 and grounded through the capacitor C1. The voltage-dependent resistors RV1 and RV2 are used to suppress transient high voltage, the rectifier bridge DB1 is used for rectification, and the capacitors CX1 and C1 are used for filtering. The input end of the power supply circuit 1 is connected to AC high voltage, which is AC 220V-240V in this embodiment, and the output end outputs DC high voltage, which is DC 220V in this embodiment.

[0028] As shown in Figure 3As shown, the drive circuit 2 includes a constant current chip U6 and 10 groups of drive groups, each of which includes a MOS tube, a first resistor and a second resistor. One end of the first resistor is connected to the gate of the MOS tube, and the other end serves as the B end of the drive group. One end of the second resistor is connected to the gate of the MOS tube, and the other end is connected to the source of the MOS tube and serves as the A end of the drive group. The drain of the MOS tube serves as the C end of the drive group. The B ends of the 10 groups of drive groups and the 4-pin of the constant current chip U6 are connected to the capacitor C2, which is connected to the 1-pin of the constant current chip U6. The C ends of the 10 groups of drive groups are connected to the resistor R37, which is connected to the 1-pin of the constant current chip U6. The A end of the first group is connected to the resistor R68, the 3-pin of the constant current chip U6 and the resistor R58. The resistor R68, the 2-pin and the 5-pin of the constant current chip U6 are grounded. The resistor R58 is connected to the 1-pin of the constant current chip U6. The A ends of the second to ninth groups of drive groups are respectively connected to the third resistors, which are grounded. The 4-pin of the constant current chip U6 is also connected to the resistor R36, which is connected to the resistor R32, which is connected to the power supply circuit 1. The resistor R37 and the C ends of the 10 groups of drive groups serve as the output end of the drive circuit 2. The resistors R32 and R36 are bias resistors for IC power supply. The constant current chip U6 uses NK8202. The resistor R58 is a constant power adjusting resistor, and the resistor R68 is a current sampling adjusting resistor. The first resistor and the second resistor of the drive group are voltage dividing and current limiting resistors. The MOS tube serves as a switch. Taking the first group of drive groups as an example, it includes the MOS tube Q8, the first resistor R38 and the second resistor R48. Multiple groups of drive groups can adjust the output current, ensure constant current output, control stability and meet the explosion-proof standard.

[0029] As shown in Figure 4 The control circuit schematic diagram is shown. The first stage control branch circuit only includes a wire, which is directly connected to the output end of the power supply circuit and the first stage LED.

[0030] The second stage control branch circuit includes a constant current chip U1. The 4-pin of the constant current chip U1 is connected to the resistor R2, the resistor R3 and the gate of the MOS tube Q1. The resistor R2 is connected to the resistor R1, which is connected to the power supply circuit 1. The resistor R3 is connected to the 3-pin of the constant current chip U1. The source of the MOS tube Q1 is connected to the 3-pin of the constant current chip U1. The drain of the MOS tube Q1 is connected to the second stage LED. The 3-pin of the constant current chip U1 is also connected to the second stage LED, the resistor R4 and the resistor R5. The resistor R4, the resistor R5, the 1-pin, the 2-pin and the 5-pin of the constant current chip U1 are connected to the drain of the MOS tube Q2 of the third stage control branch circuit.

[0031] The third stage control branch circuit has the same structure as the second stage control branch circuit, which will not be described here.

[0032] The fourth stage control branch circuit comprises a constant current chip U3, the 4-pin of the constant current chip U3 is connected with a resistor R12, a resistor R13 and the gate of a MOS tube Q3; the resistor R12 is connected with a resistor R11, and the resistor R11 is connected with a power supply circuit 1; the resistor R13 is connected with the 3-pin of the constant current chip U3; the source of the MOS tube Q3 is connected with the 3-pin of the constant current chip U3; the drain of the MOS tube Q3 is connected with a fourth stage LED; the 3-pin of the constant current chip U3 is further connected with the fourth stage LED, a resistor R14, a resistor R15 and a resistor R16, and the resistor R14, the resistor R15, the resistor R16, the 1-pin, the 2-pin and the 5-pin of the constant current chip U3 are commonly connected with the drain of a MOS tube Q4 of the fifth stage control branch circuit.

[0033] The fifth stage control branch circuit comprises a constant current chip U4, the 4-pin of the constant current chip U4 is connected with a resistor R18 and a resistor R19; the resistor R18 is connected with a resistor R17, and the resistor R17 is connected with the power supply circuit 1; the resistor R19 is connected with a resistor R21 and the gate of the MOS tube Q4, and the resistor R21 is connected with the 3-pin of the constant current chip U4; the source of the MOS tube Q4 is connected with the 3-pin of the constant current chip U4; the drain of the MOS tube Q4 is connected with a fifth stage LED; the 3-pin of the constant current chip U4 is further connected with the fifth stage LED, a resistor R23, a resistor R24 and a resistor R25, and the resistor R23, the resistor R24, the resistor R25, the 1-pin, the 2-pin and the 5-pin of the constant current chip U4 are commonly connected with the drain of a MOS tube Q6 of the sixth stage control branch circuit; the resistor R18 is further connected with a resistor R20, the resistor R20 is connected with a resistor R22 and the gate of a MOS tube Q5, and the resistor R22 is connected with the 3-pin of the constant current chip U4; the source of the MOS tube Q5 is connected with the 3-pin of the constant current chip U4, and the drain is connected with the fourth stage control branch circuit.

[0034] The sixth stage control branch circuit is the same as the fifth stage control branch circuit, and details are not repeated here.

[0035] The LED lamp is divided into six stages, and the six-stage driving circuit is used for control, so that single-stage driving is more stable, and the explosion-proof effect is better.

[0036] The number of LEDs in each stage is different, the number of LEDs is different, the driving pressure is different, the number is more, and the pressure is greater, therefore, in the first stage, a MOS tube switch is not arranged and the LED is directly controlled to be bright, as a basic light, in the second and third stages, one MOS tube is used as a control switch, and a small number of LED lamps are driven, in the fourth stage, one MOS tube is used as a control switch and a plurality of voltage division current limiting resistors, and a medium number of LED lamps are driven, in the fifth and sixth stages, two MOS tubes are used as control switches and a plurality of voltage division current limiting resistors, and a large number of LED lamps are driven, different stages of control circuits are set according to different numbers of LEDs, driving is more stable, and the explosion-proof effect is good.

[0037] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application are within the scope of the technical scheme of the present application.

Claims

1. A phased explosion-proof mining lamp control circuit, characterized by: It comprises a driving circuit (2) and a control circuit, the control circuit comprises a first stage control branch circuit, a second stage control branch circuit, a third stage control branch circuit, a fourth stage control branch circuit, a fifth stage control branch circuit and a sixth stage control branch circuit; The input end of the first stage control branch circuit is connected with the driving circuit (2), and the output end is connected with the first stage LED; the input end of the second stage control branch circuit is connected with the driving circuit (2), and the output end is connected with the second stage LED; the input end of the third stage control branch circuit is connected with the driving circuit (2), and the output end is connected with the third stage LED; the input end of the fourth stage control branch circuit is connected with the driving circuit (2), and the output end is connected with the fourth stage LED; the input end of the fifth stage control branch circuit is connected with the driving circuit (2), and the output end is connected with the fifth stage LED; the input end of the sixth stage control branch circuit is connected with the driving circuit (2), and the output end is connected with the sixth stage LED.

2. A phase controlled explosion-proof mining lamp control circuit according to claim 1, characterized in that: The driving circuit (2) comprises a constant current chip U6 and ten groups of driving groups, each of which comprises a MOS tube, a first resistor and a second resistor; one end of the first resistor is connected to the gate of the MOS tube, and the other end serves as the B end of the driving group; one end of the second resistor is connected to the gate of the MOS tube, and the other end and the source of the MOS tube together serve as the A end of the driving group; the drain of the MOS tube serves as the C end of the driving group. The B end of the ten groups of driving groups and the 4-pin of the constant current chip U6 are connected with a capacitor C2, the capacitor C2 is connected with the 1-pin of the constant current chip U6, the C end of the ten groups of driving groups is connected with a resistor R37, the resistor R37 is connected with the 1-pin of the constant current chip U6, the A end of the first group is connected with a resistor R68, the 3-pin of the constant current chip U6 and a resistor R58, the resistor R68, the 2-pin and the 5-pin of the constant current chip U6 are grounded, the resistor R58 is connected with the 1-pin of the constant current chip U6, the A end of the second to ninth groups of driving groups is respectively connected with a third resistor, and the third resistor is grounded; the 4-pin of the constant current chip U6 is further connected with a resistor R36, the resistor R36 is connected with a resistor R32, and the resistor R32 is connected with the power supply circuit (1); the resistor R37 and the C end of the ten groups of driving groups together serve as the output end of the driving circuit (2).

3. A phase controlled explosion-proof mining lamp control circuit according to claim 1, characterized in that: The second stage control branch circuit comprises a constant current chip U1, the 4-pin of the constant current chip U1 is connected with a resistor R2, a resistor R3 and the gate of a MOS tube Q1; the resistor R2 is connected with a resistor R1, and the resistor R1 is connected with the power supply circuit (1); the resistor R3 is connected with the 3-pin of the constant current chip U1; the source of the MOS tube Q1 is connected with the 3-pin of the constant current chip U1; the drain of the MOS tube Q1 is connected with the second stage LED; the 3-pin of the constant current chip U1 is further connected with the second stage LED, a resistor R4 and a resistor R5; the resistor R4, the resistor R5, the 1-pin, the 2-pin and the 5-pin of the constant current chip U1 together connect the drain of a MOS tube Q2 of the third stage control branch circuit.

4. A phase controlled explosion-proof mining lamp control circuit according to claim 1, characterized in that: The fourth stage control branch circuit comprises a constant current chip U3, the 4-pin of the constant current chip U3 is connected with a resistor R12, a resistor R13 and a gate of a MOS tube Q3; the resistor R12 is connected with a resistor R11, and the resistor R11 is connected with a power supply circuit (1); the resistor R13 is connected with the 3-pin of the constant current chip U3; the source of the MOS tube Q3 is connected with the 3-pin of the constant current chip U3; the drain of the MOS tube Q3 is connected with a fourth stage LED; the 3-pin of the constant current chip U3 is further connected with the fourth stage LED, a resistor R14, a resistor R15 and a resistor R16, and the resistor R14, the resistor R15, the resistor R16, the 1-pin, the 2-pin and the 5-pin of the constant current chip U3 are commonly connected with the drain of a MOS tube Q4 of the fifth stage control branch circuit.

5. A phase controlled explosion-proof mining lamp control circuit according to claim 1, characterized in that: The fifth stage control branch circuit comprises a constant current chip U4, the 4-pin of the constant current chip U4 is connected with a resistor R18 and a resistor R19; the resistor R18 is connected with a resistor R17, and the resistor R17 is connected with the power supply circuit (1); the resistor R19 is connected with a resistor R21 and a gate of a MOS tube Q4, and the resistor R21 is connected with the 3-pin of the constant current chip U4; the source of the MOS tube Q4 is connected with the 3-pin of the constant current chip U4; the drain of the MOS tube Q4 is connected with a fifth stage LED; the 3-pin of the constant current chip U4 is further connected with the fifth stage LED, a resistor R23, a resistor R24 and a resistor R25, and the resistor R23, the resistor R24, the resistor R25, the 1-pin, the 2-pin and the 5-pin of the constant current chip U4 are commonly connected with the drain of a MOS tube Q6 of the sixth stage control branch circuit; the resistor R18 is further connected with a resistor R20, the resistor R20 is connected with a resistor R22 and a gate of a MOS tube Q5, and the resistor R22 is connected with the 3-pin of the constant current chip U4; the source of the MOS tube Q5 is connected with the 3-pin of the constant current chip U4, and the drain of the MOS tube Q5 is connected with the fourth stage control branch circuit.

6. A phase controlled explosion-proof mining lamp control circuit according to claim 1, characterized in that: The power supply circuit (1) further comprises a fuse FU1, a voltage-dependent resistor RV1, a rectifier DB1, a capacitor CX1, a voltage-dependent resistor RV2 and a capacitor C1; one end of the voltage-dependent resistor RV1, one end of the rectifier DB1 and the fuse F1 are connected with a live wire AC1, and the other end of the voltage-dependent resistor RV1 and the other end of the rectifier B1 are connected with a neutral wire AC2; the rectifier DB1 is grounded; one pin of the rectifier DB1 is grounded through the voltage-dependent resistor RV2 and grounded through the capacitor C1.

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