Induction circuit for electronic goods shelf or container

Abstract

The utility model relates to an infrared induction device, and discloses an induction circuit for an electronic shelf or container, which comprises an infrared transmitting circuit unit, an infrared receiving circuit unit, a micro-control unit and an infrared monitoring unit, the micro-control unit is used for controlling the infrared emission circuit unit to emit infrared light; the infrared receiving circuit unit is used for receiving infrared light emitted by the infrared emission circuit unit and feeding back a received signal to the micro-control unit, and the micro-control unit processes the received signal and sends a control signal to the infrared monitoring unit; by means of the goods shelf or the goods cabinet, the misjudgment rate of goods can be reduced; the identification precision of the goods is improved; and through the arrangement of an adjustable resistor R31 and a resistor R9 in the current adjusting unit, the emission current can be flexibly adjusted according to actual requirements, so that the monitoring requirements of different articles and the working requirements under different environment illumination conditions can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to infrared induction device especially relates to a kind of induction circuit for electronic shelf or goods cabinet. BACKGROUND

[0002] Electronic shelf is a product that has arisen in recent years;In order to facilitate system erection and wiring, some recent products use wireless digital communication to improve the convenience of the entire system in practical application, so that electronic shelf can be moved to a new place easily and can be used normally immediately.

[0003] Wireless communication carriers can use several different technologies, such as radio frequency, sound wave, ultrasonic wave or light, etc. The design, erection and cost of short-distance light communication are easier and cheaper than other technologies.

[0004] As prior art CN201220146280.3; the current main adoption general 38KHZ modulation's infrared acceptance tube, and general infrared emission tube's circuit is used to identify whether goods are placed in the shelf or goods cabinet. SUMMARY

[0005] The utility model discloses to electronic shelf or goods cabinet in prior art is susceptible to interference from workshop light source, and infrared induction is unstable, and it is easy to misjudge, resulting in unstable whole shelf or goods cabinet;Induction distance, induction distance has near and far, and difference is larger, and consistency is poor, and induction distance cannot be digitized adjustment. The problem, propose a kind of induction circuit for electronic shelf or goods cabinet.

[0006] In order to solve the above technical problems, the utility model solves the following technical scheme:

[0007] An induction circuit for electronic shelf or goods cabinet, comprising an infrared emission circuit unit, an infrared receiving circuit unit, a micro control unit and an infrared monitoring unit;The micro control unit is used to control the infrared emission circuit unit to emit infrared light;The infrared receiving circuit unit is used to receive the infrared light emitted by the infrared emission circuit unit, and feed back the received signal to the micro control unit, and the micro control unit processes the received signal and sends a control signal to the infrared monitoring unit.

[0008] As a preferred, the micro control unit includes an infrared emission micro control unit and an infrared receiving micro control unit;The infrared emission micro control unit is used to control the infrared emission circuit unit;The infrared receiving micro control unit is used to control the infrared receiving circuit unit.

[0009] As preferred, the infrared emission circuit unit comprises an infrared emission amplification circuit module, an infrared emission diode and a current regulating unit; the current regulating unit, the infrared emission diode and the infrared emission amplification circuit module are connected, the infrared emission amplification circuit module is used for amplifying the received signal and transmitting the amplified signal to the infrared emission diode.

[0010] As preferred, the infrared emission amplification circuit module is an amplifying triode Q2, the infrared emission diode is a 940nm infrared emission diode D4, and the current regulating unit is an adjustable resistor R31 and a resistor R9.

[0011] The first end of the amplifying triode Q2 is connected with one end of the resistor R9, the third end of the amplifying triode Q2 is connected with the infrared emission diode D4, the second end of the amplifying triode Q2 is connected with the infrared emission micro control unit through a resistor, the other end of the resistor R9 is connected with a digital potential regulator and the resistor R31, the other end of the resistor R31 is connected with a power supply end, and the other end of the infrared emission diode D4 is grounded.

[0012] As preferred, the infrared monitoring unit comprises a triode Q3, a triode Q1, a diode D2, a diode D3 and a power supply indicating diode D1; the second end of the triode Q1 is connected with the infrared receiving micro control unit; the first end of the triode Q1 is connected with a power supply; the third end of the triode Q1 is connected with the second end of the triode Q3 through a resistor R1; the first end of the triode Q3 is grounded; the third end of the triode Q3 is connected with the diode D2 and one end of the diode D3 through a resistor R5, and the other end of the diode D2 and the diode D3 is connected with a power supply through a resistor R6.

[0013] The utility model discloses a kind of infrared induction circuit, which comprises infrared emission circuit unit and infrared monitoring unit; infrared emission circuit unit comprises amplifying triode Q2, infrared emission diode D4 and current regulating unit; infrared monitoring unit comprises triode Q3, triode Q1, diode D2, diode D3 and power supply indicating diode D1.

[0014] The utility model can ensure that the distance of goods in the shelf or the goods cabinet being inducted is within a proper range, so as to reduce the probability of misjudgment.

[0015] The utility model discloses a kind of infrared induction circuit, which comprises infrared emission circuit unit and infrared monitoring unit; infrared emission circuit unit comprises amplifying triode Q2, infrared emission diode D4 and current regulating unit; infrared monitoring unit comprises triode Q3, triode Q1, diode D2, diode D3 and power supply indicating diode D1.

[0016] The utility model discloses a kind of infrared induction circuit, which comprises infrared emission circuit unit and infrared monitoring unit; infrared emission circuit unit comprises amplifying triode Q2, infrared emission diode D4 and current regulating unit; infrared monitoring unit comprises triode Q3, triode Q1, diode D2, diode D3 and power supply indicating diode D1.

[0017] The utility model discloses through the reasonable design and mutual cooperation of each unit, realize the effective monitoring of electronic shelf or goods cabinet article, provide reliable technical support for the intelligent management of electronic shelf or goods cabinet. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is infrared transmitting circuit unit and infrared receiving circuit unit circuit diagram of the utility model.

[0019] Figure 2 It is microcontrol unit circuit diagram of the utility model.

[0020] Figure 3 It is infrared monitoring unit circuit diagram of the utility model.

[0021] Figure 4 It is digital potential regulator circuit diagram of the utility model.

[0022] Figure 5 It is circuit diagram of the utility model embodiment 1. DETAILED DESCRIPTION

[0023] The utility model will be further described in detail below in combination with the drawings and embodiments.

[0024] Embodiment 1

[0025] As prior art, microcontrol unit adopts stm8l050 chip, and the PB6 pin of stm8l050 chip generates 1Khz square wave, passes through MMBT3904 switch triode Q3 and gives SFH4547 amplification circuit Q2, drives SFH4547 amplification circuit Q2 and emits 940nm wavelength infrared light, is blocked by goods on the shelf or goods cabinet, and the reflection is given to PDB-C13F infrared receiving diode D1, and thus the current corresponding to light intensity will be generated, is transmitted to the PB3 pin of microcontrol unit stm8l050 after passing through coupling capacitor C14 and negative feedback amplification circuit, is converted to analog-digital through the PB3 pin, to determine whether the goods are placed in the shelf or goods cabinet or not. Through the SCL and SDA two pins of microcontrol unit stm8l050, adjust the size of digital potentiometer MCP4017-100K, to determine the amplification multiple of negative feedback amplification circuit, to cope with the difference of reflection distance produced by different goods surface color and roughness. Ensure that the goods in the shelf or goods cabinet are in the appropriate range, to reduce the probability of misjudgment.

[0026] Embodiment 2

[0027] Based on the embodiment 1, the inductive circuit for electronic shelf or cabinet includes infrared emission circuit unit, infrared receiving circuit unit, micro control unit and infrared monitoring unit; the micro control unit is used for controlling the infrared emission circuit unit to emit infrared light; the infrared receiving circuit unit is used for receiving the infrared light emitted by the infrared emission circuit unit and feeding back the received signal to the micro control unit; the micro control unit processes the received signal and sends control signal to the infrared monitoring unit.

[0028] As preferred, the micro control unit includes infrared emission micro control unit and infrared receiving micro control unit; the infrared emission micro control unit is used for controlling the infrared emission circuit unit; the infrared receiving micro control unit is used for controlling the infrared receiving circuit unit.

[0029] The infrared emission circuit unit includes infrared emission amplification circuit module, infrared emission diode and current adjusting unit; the current adjusting unit, the infrared emission diode and the infrared emission amplification circuit module are connected; the infrared emission amplification circuit module is used for amplifying the received signal and transmitting the amplified signal to the infrared emission diode.

[0030] The infrared emission amplification circuit module is amplifying triode Q2, the infrared emission diode is 940nm infrared emission diode D4; the current adjusting unit is adjustable resistor R31 and resistor R9;

[0031] The first end of the amplifying triode Q2 is connected with one end of the resistor R9, the third end of the amplifying triode Q2 is connected with the infrared emission diode D4, the second end of the amplifying triode Q2 is connected with the infrared emission micro control unit through resistor; the other end of the resistor R9 is connected with digital potential regulator and resistor R31; the other end of the resistor R31 is connected with power supply end; the other end of the infrared emission diode D4 is grounded.

[0032] The infrared monitoring unit includes triode Q3, triode Q1, diode D2, diode D3 and power supply indicating diode D1; the second end of the triode Q1 is connected with the infrared receiving micro control unit; the first end of the triode Q1 is connected with power supply; the third end of the triode Q1 is connected with the second end of the triode Q3 through resistor R1; the first end of the triode Q3 is grounded; the third end of the triode Q3 is connected with one end of the diode D2 and diode D3 through resistor R5; the other end of the diode D2 and diode D3 is connected with power supply through resistor R6.

Claims

1. An inductive circuit for an electronic shelf or bin, characterized in that, The application relates to an infrared monitoring device, which comprises an infrared emission circuit unit, an infrared receiving circuit unit, a micro control unit and an infrared monitoring unit; the micro control unit is used for controlling the infrared emission circuit unit to emit infrared light; the infrared receiving circuit unit is used for receiving the infrared light emitted by the infrared emission circuit unit and feeding back the received signal to the micro control unit; the micro control unit processes the received signal and sends a control signal to the infrared monitoring unit.

2. An inductive circuit for an electronic shelf or cabinet according to claim 1, characterized in that, The micro control unit comprises an infrared emission micro control unit and an infrared receiving micro control unit; the infrared emission micro control unit is used for controlling the infrared emission circuit unit; and the infrared receiving micro control unit is used for controlling the infrared receiving circuit unit.

3. An inductive circuit for use in an electronic shelf or cabinet according to claim 1, characterized in that, The infrared emission circuit unit comprises an infrared emission amplification circuit module, an infrared emission diode and a current adjusting unit; the current adjusting unit and the infrared emission diode are connected with the infrared emission amplification circuit module; the infrared emission amplification circuit module is used for amplifying and processing the received signal and transmitting the amplified and processed signal to the infrared emission diode.

4. An inductive circuit for an electronic shelf or cabinet according to claim 3, wherein, The infrared emission amplification circuit module is an amplifying triode Q2, the infrared emission diode is a 940nm infrared emission diode D4; and the current adjusting unit is an adjustable resistor R31 and a resistor R9. The first end of the amplifying triode Q2 is connected with one end of the resistor R9, the third end of the amplifying triode Q2 is connected with the infrared emission diode D4, the second end of the amplifying triode Q2 is connected with the infrared emission micro control unit through a resistor; the other end of the resistor R9 is connected with a digital potential regulator and the resistor R31; the other end of the resistor R31 is connected with a power supply end; and the other end of the infrared emission diode D4 is grounded.

5. An inductive circuit for use in an electronic shelf or cabinet according to claim 1, characterized in that, The infrared receiving circuit unit comprises an infrared receiving diode, a filtering module and a feedback amplification circuit module; the infrared receiving diode is used for receiving infrared light and filtering the received infrared light in the filtering module so as to transmit the filtered signal to the feedback amplification circuit module; the feedback amplification circuit module amplifies and processes the received signal and feeds back the amplified and processed signal to the micro control unit.

6. An inductive circuit for use in an electronic shelf or cabinet according to claim 1, characterized in that, The infrared monitoring unit comprises a triode Q3, a triode Q1, a diode D2, a diode D3 and a power supply indicating diode D1; the second end of the triode Q1 is connected with the infrared receiving micro control unit; the first end of the triode Q1 is connected with a power supply; the third end of the triode Q1 is connected with the second end of the triode Q3 through a resistor R1; the first end of the triode Q3 is grounded; the third end of the triode Q3 is connected with the diode D2 and one end of the diode D3 through a resistor R5; the other end of the diode D2 and the diode D3 is connected with a power supply through a resistor R6.

Images