Illumination control circuit of distribution box

Abstract

The utility model discloses an illumination control circuit of a distribution box, which relates to the technical field of illumination and comprises an infrared emission circuit arranged on one side of a lock groove; the infrared receiving circuit is arranged on the other side opposite to one side of the lock groove; the main control chip is respectively connected with the infrared transmitting circuit and the infrared receiving circuit; the base electrode of the first NPN triode is connected with the main control chip; the collector electrode of the first NPN triode is connected with the negative electrode of the illuminating lamp, the positive electrode of the illuminating lamp is connected with the power supply, and the emitter electrode of the first NPN triode is grounded. When the door is closed, the lock tongue is clamped into the lock groove, and the illuminating lamp does not emit light; when the door is opened, the lock tongue is not clamped into the lock groove, and the illuminating lamp emits light, so that a worker can be prompted whether the distribution box is closed and locked or not through the light emitting condition of the illuminating lamp while the illuminating lamp is prevented from being forgotten to be turned off.

Description

TECHNICAL FIELD

[0001] The utility model relates to lighting technical field especially relates to a lighting control circuit of distribution box. BACKGROUND

[0002] The distribution box has the characteristics of small volume, simple installation, special technical performance, fixed position, unique configuration function, no site limitation, universal application, stable and reliable operation, high space utilization, less land occupation and environmental protection effect.

[0003] Most of the traditional distribution box is not provided with the lighting lamp, when the staff opens the distribution box to operate in the weak light environment, needs to use the flashlight or other lighting electrical appliances to assist the lighting, so that the staff operation is inconvenient. So a part of the distribution box is provided with the lighting lamp in the box body, but the internal lighting lamp needs to be manually switched on and off. If the staff forgets to turn off the lamp after operation, the lamp will waste electricity, and the service life of the lamp will also be reduced. UTILITY MODEL CONTENTS

[0004] The utility model discloses a lighting control circuit of distribution box, when the door is closed, the lock tongue is clamped into the lock slot, and the lighting lamp does not emit light, when the door is opened, the lock tongue is not clamped into the lock slot, and the lighting lamp emits light, the application can also prompt the staff whether the distribution box is closed and locked through the light emission of the lighting lamp while preventing forgetting to turn off the lighting lamp.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] One aspect of the utility model discloses a lighting control circuit of distribution box, the lighting control circuit includes: infrared emission circuit, the infrared emission circuit is arranged at one side of the lock slot, infrared receiving circuit, the infrared receiving circuit is arranged at the other side opposite to one side of the lock slot, main control chip, the main control chip is connected with the infrared emission circuit and the infrared receiving circuit respectively, first NPN triode, the base of the first NPN triode is connected with the main control chip, lighting lamp, the negative pole of the lighting lamp is connected with the collector of the first NPN triode, the positive pole of the lighting lamp is connected with the power supply, and the emitter of the first NPN triode is grounded, when the door is closed, then the lock tongue is clamped into the lock slot, and the lighting lamp does not emit light, when the door is opened, then the lock tongue is not clamped into the lock slot, and the lighting lamp emits light.

[0007] In some embodiments, the infrared emission circuit includes an infrared emission tube, a first resistor, a second resistor, and a second NPN transistor, a positive electrode of the infrared emission tube is connected to a power supply, a negative electrode of the infrared emission tube is connected to a collector of the second NPN transistor through the first resistor, an emitter of the second NPN transistor is grounded, and a base of the second NPN transistor is connected to a master control chip through the second resistor.

[0008] In some embodiments, the infrared receiving circuit includes an infrared receiving tube, a PNP transistor, and a third resistor, a control end of the infrared receiving tube is configured to receive an infrared signal transmitted by the infrared emission tube, an input end of the infrared receiving tube is connected to a base of the PNP transistor, an output end of the infrared receiving tube is grounded, an emitter of the PNP transistor is connected to a power supply, a collector of the PNP transistor is connected to a master control chip and one end of the third resistor, and the other end of the third resistor is grounded.

[0009] In some embodiments, the infrared receiving circuit further includes a third NPN transistor, a fourth resistor, and a fifth resistor, a base of the third NPN transistor is connected to a collector of the PNP transistor and one end of the third resistor, a collector of the third NPN transistor is connected to the master control chip and one end of the fourth resistor, the other end of the fourth resistor is connected to a power supply, and an emitter of the third NPN transistor is grounded through the fifth resistor.

[0010] In some embodiments, the illumination control circuit further includes an illumination detection control circuit, the illumination detection control circuit includes a fourth NPN transistor, a photosensitive diode, a sixth resistor, and a seventh resistor, a collector of the fourth NPN transistor is connected to a power supply through the sixth resistor, a base of the fourth NPN transistor is connected to one end of the seventh resistor and a negative electrode of the photosensitive diode, the other end of the seventh resistor is connected to a power supply, a positive electrode of the photosensitive diode is grounded, and an emitter of the fourth NPN transistor is connected to a positive electrode of the illumination lamp.

[0011] In some embodiments, the illumination detection control circuit further includes a fifth NPN transistor, an eighth resistor, and a ninth resistor, a collector of the fifth NPN transistor is connected to a base of the fourth NPN transistor and one end of the seventh resistor, a base of the fifth NPN transistor is connected to one end of the eighth resistor and one end of the ninth resistor, the other end of the eighth resistor is connected to a positive electrode of the photosensitive diode, a negative electrode of the photosensitive diode is connected to a power supply, the other end of the ninth resistor and an emitter of the fifth NPN transistor are both grounded.

[0012] The utility model discloses an illumination control circuit of distribution box has at least following beneficial effect when outside illumination intensity exceeds the preset threshold value, whether the door is open or close, the lighting lamp does not emit light, and the electric energy is saved.

[0013] It is to be understood that the foregoing general description and the following detailed description are only examples and are not restrictive of the disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Figure 1 Circuit principle diagram for the first embodiment of infrared emission circuit and infrared receiving circuit;

[0016] Figure 2 Circuit principle diagram for the second embodiment of infrared emission circuit and infrared receiving circuit;

[0017] Figure 3 Circuit principle diagram for the first embodiment of illumination detection control circuit;

[0018] Figure 4 Circuit principle diagram for the second embodiment of illumination detection control circuit. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

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

[0021] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; 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, or it can be connected inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0022] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the examples set forth herein; rather, these example implementations are provided so that this disclosure will be thorough and complete, and will fully convey the inventive aspects of the example implementations to those skilled in the art. The accompanying drawings are included to provide a further understanding of the disclosure and are incorporated into and constitute a part of this disclosure. Like reference numerals in the drawings represent like elements or similar elements, and thus their repeated description will be omitted.

[0023] The technical solutions of the embodiments of the present application will be briefly described below:

[0024] According to some embodiments, as Figures 1 to 4 The present application provides a lighting control circuit of a distribution box, which comprises:

[0025] An infrared emission circuit is arranged on one side of the lock slot.

[0026] An infrared receiving circuit is arranged on the other side opposite to the one side of the lock slot.

[0027] A main control chip is connected to the infrared emission circuit and the infrared receiving circuit respectively.

[0028] A first NPN triode QN1 is connected to the main control chip.

[0029] A lighting lamp D11 is connected to the negative electrode of the first NPN triode QN1, the positive electrode of the lighting lamp D11 is connected to a power supply, and the emitter of the first NPN triode QN1 is grounded.

[0030] The working principle of the above embodiment is that the main control chip controls the infrared transmitting circuit to work every interval of the set time length, so that the infrared transmitting circuit sends an infrared signal every interval of the set time length. Because the infrared transmitting circuit and the infrared receiving circuit are arranged face to face, if the lock slot is clamped by the lock tongue, the infrared receiving circuit cannot receive the infrared signal sent by the infrared transmitting circuit.

[0031] Further, when the door is closed, the lock tongue is clamped in the lock slot, the main control chip cannot receive the infrared signal sent by the infrared transmitting circuit through the infrared receiving circuit, the main control chip outputs a low-level signal 202 to the base of the first NPN transistor QN1 to control the first NPN transistor QN1 to be cut off, and the illuminating lamp D11 does not emit light.

[0032] When the door is opened, the lock tongue is not clamped in the lock slot, the main control chip receives the infrared signal sent by the infrared transmitting circuit through the infrared receiving circuit, the main control chip outputs a high-level signal 202 to the base of the first NPN transistor QN1 to control the first NPN transistor QN1 to be turned on, and the illuminating lamp D11 emits light.

[0033] The application can not only prevent the staff from forgetting to turn off the illuminating lamp D11, but also prompt the staff whether the distribution box is closed and locked through the light-emitting state of the illuminating lamp D11. It is a two-in-one design, which greatly improves the practicability.

[0034] The above and other embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings. Figures 1 to 4 The preferred embodiments of the present disclosure are further described in detail.

[0035] According to some embodiments, as shown in Figure 1 The infrared transmitting circuit includes an infrared transmitting tube DI, a first resistor R1, a second resistor R2, and a second NPN transistor QN2. The positive electrode of the infrared transmitting tube DI is connected to a power supply. The negative electrode of the infrared transmitting tube DI is connected to the collector of the second NPN transistor QN2 through the first resistor R1. The emitter of the second NPN transistor QN2 is grounded. The base of the second NPN transistor QN2 is connected to the main control chip through the second resistor R2.

[0036] Further, in the first embodiment, as shown in Figure 1 The infrared receiving circuit includes an infrared receiving tube QI, a PNP transistor QP, and a third resistor R3. The control end of the infrared receiving tube QI is used to receive the infrared signal sent by the infrared transmitting tube DI. The input end of the infrared receiving tube QI is connected to the base of the PNP transistor QP. The output end of the infrared receiving tube QI is grounded. The emitter of the PNP transistor QP is connected to a power supply. The collector of the PNP transistor QP is connected to the main control chip and one end of the third resistor R3. The other end of the third resistor R3 is grounded.

[0037] The working principle of the above embodiment is that, asFigure 1 As shown, the main control chip outputs a high-level signal 100 to the base of the second NPN transistor QN2 every set time interval, and the second NPN transistor QN2 is turned on, so that the infrared emitting tube DI sends an infrared signal once every set time interval.

[0038] like Figure 1 As shown, when the door is closed, the lock tongue is stuck in the lock slot, the infrared receiving tube QI cannot receive the infrared signal emitted by the infrared emitting tube DI, the infrared receiving tube QI is cut off, the PNP transistor QP is cut off, and the main control chip detects that the infrared receiving signal 201 at the collector of the PNP transistor QP is a low-level signal.

[0039] like Figure 1 As shown, when the door is opened, the lock tongue is not stuck in the lock slot, the infrared receiving tube QI receives the infrared signal emitted by the infrared transmitting tube DI, the infrared receiving tube QI is turned on, the base of the PNP transistor QP receives a low-level signal through the infrared receiving tube QI, the PNP transistor QP is turned on, and the main control chip detects that the infrared receiving signal 201 is a high-level signal at the collector of the PNP transistor QP.

[0040] In this embodiment, the main control chip is configured to determine that the door is closed when the main control chip detects that the infrared receiving signal 201 is at a low level; and to determine that the door is open when the main control chip detects that the infrared receiving signal 201 is at a high level.

[0041] Furthermore, in the second embodiment, if Figure 2 As shown, on the basis of the first embodiment, the infrared receiving circuit further includes a third NPN transistor QN3, a fourth resistor R4 and a fifth resistor R5, the base of the third NPN transistor QN3 is connected to the collector of the PNP transistor QP and one end of the third resistor R3, the collector of the third NPN transistor QN3 is connected to the main control chip and one end of the fourth resistor R4, the other end of the fourth resistor R4 is connected to the power supply, and the emitter of the third NPN transistor QN3 is grounded through the fifth resistor R5.

[0042] The working principle based on the above embodiment is as follows: Figure 2 As shown, when the door is closed, the lock tongue is stuck in the lock slot, the infrared receiving tube QI cannot receive the infrared signal emitted by the infrared emitting tube DI, the infrared receiving tube QI is cut off, the PNP transistor QP is cut off, the third NPN transistor QN3 is cut off, and the main control chip detects that the infrared receiving signal 201 at the collector of the third NPN transistor QN3 is a high-level signal.

[0043] like Figure 2As shown, when the door is opened, the lock tongue is not clamped into the lock slot, the infrared receiving tube QI receives the infrared signal emitted by the infrared emitter DI, the infrared receiving tube QI is turned on, the base of the PNP transistor QP receives the low-level signal through the infrared receiving tube QI, the PNP transistor QP is turned on, the base of the third NPN transistor QN3 receives the high-level signal output by the PNP transistor QP, the third NPN transistor QN3 is turned on, and the main control chip detects that the infrared receiving signal 201 is a low-level signal at the collector of the third NPN transistor QN3.

[0044] In this embodiment, the main control chip is configured to determine that the door is closed when the main control chip detects that the infrared receiving signal 201 is high, and determine that the door is opened when the main control chip detects that the infrared receiving signal 201 is low.

[0045] According to some embodiments, as shown in Figure 3 The lighting control circuit further includes a light detection control circuit, which in the first embodiment includes a fourth NPN transistor QN4, a photosensitive diode DP, a sixth resistor R6, and a seventh resistor R7. The collector of the fourth NPN transistor QN4 is connected to the power supply through the sixth resistor R6, the base of the fourth NPN transistor QN4 is connected to one end of the seventh resistor R7 and the negative electrode of the photosensitive diode DP, the other end of the seventh resistor R7 is connected to the power supply, the positive electrode of the photosensitive diode DP is grounded, and the emitter of the fourth NPN transistor QN4 is connected to the positive electrode of the lighting lamp D11.

[0046] Based on the working principle of the above embodiment, as shown in Figure 3 When the external light intensity exceeds the preset threshold, the base of the fourth NPN transistor QN4 receives a low-level signal through the photosensitive diode DP, the fourth NPN transistor QN4 is cut off, the fourth NPN transistor QN4, the lighting lamp D11, and the first NPN transistor QN1 are connected in series, and the lighting lamp D11 does not emit light regardless of whether the door is opened or closed, thereby saving power.

[0047] When the external light intensity is lower than the preset threshold, the base of the fourth NPN transistor QN4 receives a high-level signal through the seventh resistor R7, and the fourth NPN transistor QN4 is turned on. After the fourth NPN transistor QN4 is turned on, if the door is closed and locked, the lock tongue is clamped into the lock slot, the main control chip cannot detect the infrared signal sent by the infrared emitter DI through the infrared receiving tube QI, and then the main control chip controls the first NPN transistor QN1 to be cut off, and the lighting lamp D11 does not emit light. If the door is opened, the lock tongue is not clamped into the lock slot, the main control chip detects the infrared signal sent by the infrared emitter DI through the infrared receiving tube QI, and then the main control chip controls the first NPN transistor QN1 to be turned on, and the lighting lamp D11 emits light.

[0048] Further, such as Figure 4 As shown, in the second embodiment, the light detection control circuit further includes a fifth NPN transistor QN5, an eighth resistor R8 and a ninth resistor R9. The collector of the fifth NPN transistor QN5 is connected to the base of the fourth NPN transistor QN4 and one end of the seventh resistor R7. The base of the fifth NPN transistor QN5 is connected to one end of the eighth resistor R8 and one end of the ninth resistor R9. The other end of the eighth resistor R8 is connected to the anode of the photosensitive diode DP, the cathode of the photosensitive diode DP is connected to the power supply, and the other end of the ninth resistor R9 and the emitter of the fifth NPN transistor QN5 are both grounded.

[0049] The working principle based on the above embodiment is as follows: Figure 4 As shown, when the external light intensity exceeds the preset threshold, the base of the fifth NPN transistor QN5 receives a high-level signal through the photosensitive diode DP, and the fifth NPN transistor QN5 is turned on. The base of the fourth NPN transistor QN4 receives a low-level signal through the fifth NPN transistor QN5, and the fourth NPN transistor QN4 is turned off. The fourth NPN transistor QN4, the lighting lamp D11 and the first NPN transistor QN1 are connected in series. Since the fourth NPN transistor QN4 is turned off, the lighting lamp D11 does not emit light regardless of whether the door is open or closed, thereby saving energy.

[0050] When the external light intensity is lower than a preset threshold, the base of the fifth NPN transistor QN5 receives a low-level signal through the ninth resistor R9, turning off the fifth NPN transistor QN5. The base of the fourth NPN transistor QN4 receives a high-level signal through the seventh resistor R7, turning on the fourth NPN transistor QN4. After the fourth NPN transistor QN4 turns on, if the door is closed and locked, the lock tongue is engaged in the lock slot. The main control chip cannot detect the infrared signal sent by the infrared emitting tube DI through the infrared receiving tube QI. The main control chip then controls the first NPN transistor QN1 to turn off, and the lighting lamp D11 does not emit light. If the door is open, the lock tongue is not engaged in the lock slot. The main control chip detects the infrared signal sent by the infrared emitting tube DI through the infrared receiving tube QI. The main control chip then controls the first NPN transistor QN1 to turn on, and the lighting lamp D11 emits light.

[0051] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0052] While the disclosure has been described with reference to several exemplary embodiments, it is understood that the words that have been used are words of description and illustration, rather than words of limitation. As previously mentioned, changes and modifications can be made to the above-described embodiments without departing from the spirit or scope of the disclosure, and it is understood that the above-described embodiments are to be considered exemplary only, and the scope of the disclosure is to be determined by the following claims, and equivalents thereto.

Claims

1. A lighting control circuit for a distribution box, characterized in that: The lighting control circuit includes: an infrared transmitting circuit, the infrared transmitting circuit being arranged on one side of the lock slot; an infrared receiving circuit, the infrared receiving circuit being disposed on a side opposite to the other side of the lock slot; A main control chip, wherein the main control chip is connected to the infrared transmitting circuit and the infrared receiving circuit respectively; a first NPN transistor, wherein the base of the first NPN transistor is connected to the main control chip; a lighting lamp, wherein the collector of the first NPN transistor is connected to the cathode of the lighting lamp, the anode of the lighting lamp is connected to a power supply, and the emitter of the first NPN transistor is grounded; When the door is closed, the lock tongue is locked in the lock slot and the lighting lamp does not emit light; When the door is opened, the lock tongue is not locked in the lock slot, and the lighting lamp emits light.

2. The lighting control circuit according to claim 1, characterized in that: The infrared emitting circuit includes an infrared emitting tube, a first resistor, a second resistor and a second NPN transistor. The positive electrode of the infrared emitting tube is connected to a power supply, the negative electrode of the infrared emitting tube is connected to the collector of the second NPN transistor through the first resistor, the emitter of the second NPN transistor is grounded, and the base of the second NPN transistor is connected to the main control chip through the second resistor.

3. The lighting control circuit according to claim 2, characterized in that: The infrared receiving circuit includes an infrared receiving tube, a PNP transistor and a third resistor. The control end of the infrared receiving tube is used to receive the infrared signal sent by the infrared transmitting tube. The input end of the infrared receiving tube is connected to the base of the PNP transistor, the output end of the infrared receiving tube is grounded, the emitter of the PNP transistor is connected to the power supply, the collector of the PNP transistor is connected to the main control chip and one end of the third resistor, and the other end of the third resistor is grounded.

4. The lighting control circuit according to claim 3, characterized in that: The infrared receiving circuit also includes a third NPN transistor, a fourth resistor and a fifth resistor. The base of the third NPN transistor is connected to the collector of the PNP transistor and one end of the third resistor. The collector of the third NPN transistor is connected to the main control chip and one end of the fourth resistor. The other end of the fourth resistor is connected to the power supply, and the emitter of the third NPN transistor is grounded through the fifth resistor.

5. The lighting control circuit according to claim 1, characterized in that: The lighting control circuit also includes a light detection control circuit, which includes a fourth NPN transistor, a photosensitive diode, a sixth resistor and a seventh resistor. The collector of the fourth NPN transistor is connected to the power supply through the sixth resistor, the base of the fourth NPN transistor is connected to one end of the seventh resistor and the negative electrode of the photosensitive diode, the other end of the seventh resistor is connected to the power supply, the positive electrode of the photosensitive diode is grounded, and the emitter of the fourth NPN transistor is connected to the positive electrode of the lighting lamp.

6. The lighting control circuit according to claim 5, characterized in that: The light detection control circuit also includes a fifth NPN transistor, an eighth resistor and a ninth resistor. The collector of the fifth NPN transistor is connected to the base of the fourth NPN transistor and one end of the seventh resistor, the base of the fifth NPN transistor is connected to one end of the eighth resistor and one end of the ninth resistor, the other end of the eighth resistor is connected to the positive electrode of the photosensitive diode, the negative electrode of the photosensitive diode is connected to the power supply, and the other end of the ninth resistor and the emitter of the fifth NPN transistor are both grounded.

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