CN220273901U

CN220273901U - Infrared lamp flowing water drive circuit and safety grating illuminator

Info

Publication number: CN220273901U
Application number: CN202321795038.3U
Authority: CN
Inventors: 纪海平; 李林魏
Original assignee: Shenzhen Stanbon Technology Co ltd
Current assignee: Shenzhen Stanbon Technology Co ltd
Priority date: 2023-07-10
Filing date: 2023-07-10
Publication date: 2023-12-29
Anticipated expiration: 2033-07-10

Abstract

The utility model relates to the technical field of safety gratings, in particular to an infrared lamp running water driving circuit and a safety grating illuminator. The driving circuit comprises a control chip and a lamp bead emission module, wherein the control chip comprises a plurality of circuit pins, the lamp bead emission module is electrically connected with the circuit pins, the lamp bead emission module comprises a plurality of lamp bead circuits which are connected in parallel, the high resistance, the high level and the low level are output to the lamp bead circuits through the control chip, the frequency and the duty ratio of the infrared lamp can be controlled through the output of three modes, the running water driving of the infrared lamp is realized, the number of electronic elements and the pins of the control chip are greatly reduced, the cost is effectively reduced, and meanwhile, the limitation of the expansion of the number of the lamp beads of an expansion plate is solved, so that great convenience is provided for production.

Description

Infrared lamp flowing water drive circuit and safety grating illuminator

Technical Field

The utility model relates to the technical field of safety gratings, in particular to an infrared lamp running water driving circuit and a safety grating illuminator.

Background

A safety grating is a safety protection device for detecting and preventing objects or persons from entering a dangerous area. It is composed of a photoelectric emitter and receiver, and monitors whether an object or person enters the dangerous area by emitting a beam of light and detecting the received reflected light.

Conventional light emitters typically employ a running light, i.e., a loop of turning on infrared emission lamps, starting with a first lamp, each lamp is turned on for 10us, after 90us intervals, the next lamp is turned on, and after the last lamp is turned on, the first lamp is turned back on. The light-emitting device can adopt two chips, a shift register and an analog switch to realize the function of the running light by mutually matching, has high cost, uses more electric elements and occupies larger assembly space.

Disclosure of Invention

The utility model provides an infrared lamp flow driving circuit which is used for solving the problems of high cost, more electronic elements and larger assembly space occupation of a light-emitting device circuit in the prior art.

To solve the above problems, in a first aspect, the present utility model provides an infrared lamp running water driving circuit, comprising:

the control chip comprises a plurality of circuit pins;

the lamp bead transmitting module is electrically connected with the control chip, the lamp bead transmitting module comprises a plurality of lamp bead circuits which are connected in parallel, the lamp bead circuits comprise diode LEDs, triodes, first resistors and second resistors, one ends of the first resistors are connected with circuit pins, the other ends of the first resistors are connected with pins 1 of the triodes, one ends of the second resistors are connected with pins 1 of the triodes, the other ends of the second resistors are connected with pins 2 of the triodes, the pins 2 of the triodes are grounded, and the diode LEDs are connected with pins 3 of the triodes.

In a preferred embodiment, the plurality of circuit pins includes 8 output pins, and the 8 output pins are electrically connected to the plurality of bead circuits respectively.

In a preferred embodiment, according to the first aspect, the plurality of circuit PINs further includes a PIN14, a third resistor is disposed on the PIN14, and the PIN14 is used for inputting a high level or a low level.

In a preferred embodiment, according to the first aspect, the plurality of circuit PINs further includes PIN13, and PIN13 is an output enable PIN of the control chip.

In a preferred embodiment, according to the first aspect, the plurality of circuit PINs further comprises a PIN12, the PIN12 being used for connecting a shift register clock input unit.

In a preferred embodiment, according to the first aspect, the plurality of circuit PINs further comprises a PIN11, the PIN11 being used for connecting a shift register clock input unit.

In a preferred embodiment, according to the first aspect, the plurality of circuit PINs further includes PIN10, and PIN10 is a reset PIN of the control chip.

In a preferred embodiment, according to the first aspect, the plurality of circuit PINs further includes PIN9, and PIN9 is a serial data output PIN of the control chip.

In a second aspect, the utility model also provides a safety grating light emitter, which comprises any one of the infrared lamp flow driving circuits.

The beneficial effects of the utility model are as follows: the utility model provides an infrared lamp running water driving circuit, which comprises a control chip and a lamp bead emission module, wherein the control chip comprises a plurality of circuit pins, the lamp bead emission module comprises a plurality of lamp bead circuits which are connected in parallel, the plurality of lamp bead circuits are respectively connected with the plurality of circuit pins, the control chip outputs high resistance, high level and low level to the lamp bead circuits, the frequency and the duty ratio of an infrared lamp can be controlled through the output of three modes, the running water driving of the infrared lamp is realized, the number of electronic elements and the pins of the control chip are greatly reduced, the cost is effectively reduced, the limit of the expansion of the number of the lamp beads of an expansion board is solved, and great convenience is provided for production.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram showing the overall structure of a control chip;

fig. 2 shows a schematic diagram of the overall structure of the lamp bead circuit.

Description of main reference numerals:

100-a control chip; 110-an output pin; 200-lamp bead circuit.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Referring to fig. 1 and 2, the present utility model provides an infrared lamp running water driving circuit (hereinafter referred to as driving circuit) which includes a control chip 100 and a lamp bead emitting module, wherein the lamp bead emitting module includes a plurality of lamp bead circuits 200 connected in parallel with each other, the control chip 100 includes a plurality of circuit pins, and the plurality of lamp bead circuits 200 are respectively and electrically connected to the plurality of circuit pins.

Specifically, the bead circuit 200 includes a diode LED, a triode, a first resistor and a second resistor, one end of the first resistor is connected with a circuit pin, the other end of the first resistor is connected with a pin1 of the triode, one end of the second resistor is connected with a pin1 of the triode, the other end of the second resistor is connected with a pin 2 of the triode, the pin 2 of the triode is grounded, and the diode LED is connected with a pin 3 of the triode.

It can be understood that the control chip 100 outputs high resistance, high level and low level to the lamp bead circuit 200, and the output of three modes can control the frequency and duty ratio of the infrared lamp, so that the running water driving of the infrared lamp is realized, the number of electronic elements and the number of pins of the control chip 100 are greatly reduced, the cost is effectively reduced, the limitation of the expansion of the number of the lamp beads of the expansion board is solved, and great convenience is provided for production.

Referring to fig. 1, based on the above scheme, the plurality of circuit pins preferably includes 8 output pins, wherein the 8 output pins are pin 15 and pins 1-7, respectively, and the 8 output pins are electrically connected with the plurality of lamp bead circuits 200, respectively.

In the above scheme, the plurality of bead circuits 200 are respectively IR-D (1-8), and the plurality of bead circuits 200 have the same structure, but of course, the plurality of bead circuits 200 may also be IR-D (1-N), that is, the number of bead circuits 200 may be plural, and specifically set according to the needs.

With continued reference to fig. 1, based on the above scheme, preferably, the plurality of circuit PINs further includes a PIN14, a third resistor is electrically connected to the PIN14, the PIN14 is a data input PIN of the control chip 100, and the PIN14 is used for inputting a high level or a low level.

Preferably, the plurality of PIN circuits further includes PIN13, PIN13 is an output enable PIN of the control chip 100, and is valid at low level on PIN 13; the high resistance is output at the high level, and the data of the buffer register in the control chip 100 is output at the low level.

Preferably, the plurality of PIN circuits further includes a PIN12, the PIN12 is used for connecting to a shift register clock input unit, when a rising edge is input on the PIN12, the control chip 100 stores data of the shift register into the cache register, and at this time, the PIN12 is controlled to output the data of the cache register.

Preferably, the plurality of circuit PINs further includes PIN11, PIN11 is used for connecting a shift register clock input unit, and when a rising edge is input on PIN11, control chip 100 shifts the internal shift register one bit backward, and simultaneously saves the data input by the DS PIN on bit 0 of the shift register.

Preferably, the plurality of circuit PINs further includes PIN10, PIN10 is a reset PIN of the control chip 100, and when PIN10 is valid at a low level and when a low level is input, data stored in a shift register inside the control chip 100 is cleared.

Preferably, the plurality of circuit PINs further includes PIN9, PIN9 is a serial output PIN of the control chip, and outputs DS PIN data stored in a shift register in the control chip 100, and provides input data for a DS of a next control chip 100 during cascading.

The utility model also provides a safety grating light emitter, which comprises any driving circuit in the scheme, namely the safety grating light emitter comprises any scheme and belongs to the scope of the utility model.

The scheme inputs the high level on the PIN PIN14 only once, further stores the high level into the shift register through the PIN PIN12, and then the PIN PIN12 shifts the high level one bit backwards every 100us, thereby realizing the control of the running light. When the red light needs to be lighted, the PIN PIN13 outputs a low level, the data in the register is further output, meanwhile, the PIN PIN13 output time is controlled to be 10us, then a high level is set, and at the moment, the control chip 100 outputs a high resistance.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims

1. An infrared lamp running water drive circuit, characterized by comprising:

the control chip comprises a plurality of circuit pins;

2. The infrared lamp running water driving circuit according to claim 1, wherein the plurality of circuit pins comprises 8 output pins, and the 8 output pins are respectively electrically connected with the plurality of lamp bead circuits.

3. The infrared lamp running water driving circuit according to claim 1, wherein a plurality of the circuit PINs further comprise a PIN14, a third resistor is provided on the PIN14, and the PIN14 is used for inputting a high level or a low level.

4. The infrared lamp pipelining driving circuit according to claim 1, wherein a plurality of said circuit PINs further comprise PIN13, said PIN13 being an output enable PIN of said control chip.

5. The infrared lamp pipelining drive circuit according to claim 1, wherein a plurality of said circuit PINs further comprise PIN12, said PIN12 being for connection to a shift register clock input unit.

6. The infrared lamp pipelining drive circuit according to claim 1, wherein a plurality of said circuit PINs further comprise PIN11, said PIN11 being for connection to a shift register clock input unit.

7. The infrared lamp running water driving circuit according to claim 1, wherein a plurality of the circuit PINs further comprise PIN10, the PIN10 being a reset PIN of the control chip.

8. The infrared lamp pipelining drive circuit of claim 1, wherein a plurality of the circuit PINs further comprise PIN9, the PIN9 being a serial data output PIN of the control chip.

9. A safety grating light emitter comprising an infrared lamp running water drive circuit as claimed in any one of claims 1 to 8.