CN102175688A

CN102175688A - Colour code detector

Info

Publication number: CN102175688A
Application number: CN 201110005826
Authority: CN
Inventors: 王天甜
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-01-12
Filing date: 2011-01-12
Publication date: 2011-09-07

Abstract

The invention provides a colour code detector and relates to detection equipment. The colour code detector is characterized by comprising a power supply module, a signal transmitting module, a signal receiving module and an output control and indication module, wherein the colour code detector judges whether the appearance of a product is normal or not via detecting the reflecting focus change of the identification of a detected product; when the product is electrified and the appearance of the detected product is normal, a digital signal outputs a low level, and an LED (light-emitting diode) lamp is turned on; when the appearance of the product is defective, the signal of the receiving equipment (silicon photocell) is weakened, so that the digital signal outputs a high level, and the LED lamp is turned off. The response test time of the detector provided by the invention can be 1 millisecond, the switching frequency of the test is 300Hz, and the detector has quite high test breadth and precision; and during the whole product design procedure, small signal amplifying and comparing circuits are mainly used, and the power is relatively small, so only small encapsulation chip elements are adopted in the design of a circuit PCB (printed circuit board), therefore the structure of the product is smaller and more compact, and the circuit is more reliable.

Description

A kind of colour code detecting device

Technical field

The present invention relates to checkout equipment, be specifically related to a kind of colour code detecting device.

Background technology

In today of electric era, the automaticity of domestic robotization industry is more and more higher, and controllability, sensitivity and the unfailing performance to robotization testing agency all has very high requirement simultaneously.The colour code detecting device is a kind of as the product quality checkout equipment, and the test color with very outstanding detection sensitivity, broad is general, and the colour code detecting device mainly is the equipment that is used for detecting on the automatic production line colour code, is the proving installation of testing product defective.The general complex structure of colour code detecting device of the prior art, circuit design is unreasonable, and the power consumption height can not adapt to the detection requirement of high-speed production lines.

Summary of the invention

Technical matters to be solved by this invention is to provide at the bottom of a kind of reasonable in design, compact conformation, the power consumption, can adapt to the detection requirement of high-speed production lines, improves the colour code detecting device of the work efficiency of automatic production line.

Technical matters to be solved by this invention realizes by the following technical solutions,

A kind of colour code detecting device is characterized in that: be made of with indicating module power module, signal emission module, signal receiving module and output control;

Described power module input end is by 4148 paster three-terminal regulator blocks and peripheral components capacitor C 1, C2, C3, C4, resistance R 1, R2, reverse polarity protection's diode D2 forms, when input voltage is between 15 to 24V, the input prime adds 2 grades of filtering clutters and reverse-voltage protection, output terminal makes the power supply of output more stable by the C5 capacitor filtering, does not have the assorted signal of disturbing;

Described signal emission module is by resistance R 15, and capacitor C 10 is formed filtering circuit interference filtering, and then by resistance R 3, R12, R13, the on-off circuit that V5, LED1 form is lighted power valve and sent signal;

Described signal receiving module is made up of three grades of small-signal Resistance and Capacitance Coupled Amplification Circuit, the first order is by triode Q1, resistance R 16, R17, R18, capacitor C 11, V1, formation total radio amplifier, the total radio amplifier that the second level is made up of resistance R 19, R20, capacitor C 12, V2, the total radio amplifier that the third level is made up of adjustable resistance RP1, resistance R 21, capacitor C 13, V3, a front and back level DC channel is isolated from each other, the quiescent point of each grade is all separate, is convenient to analyze, designs and uses;

Described output control and indicating module mainly are made up of positive and negative logic amount output signal and signal indicating circuit, described positive logic amount output circuit is by resistance R 6, capacitor C 7, U3A, the U3B phase inverter is formed prime Filtering Processing circuit, relatively exporting through U2A amplifier comparer then, another part negative logic amount output circuit is by capacitor C 9, phase inverter U3C, U3D, diode D6 forms the prime treatment circuit, relatively export through U2B amplifier comparer then, described signal indicating circuit is by isolating switch DZ1, resistance R 7, R8, R9, diode D4, D5, V4, LED2 forms, triode conducting when positive logic amount output low level, electric bright pilot lamp.

The present invention is that the reflector focus by detected product mark changes, and judges whether product appearance normal: when the product energising and the test product outward appearance just often, the digital quantity signal output low level, the LED lamp is bright; When there is defective in product appearance, cause receiving equipment (silicon photocell) signal weaker, then digital quantity signal is exported high level, and the LED lamp goes out.

The invention has the beneficial effects as follows:

1, this product circuit principle design rationally, be skillfully constructed, adopt reflective infrared light power valve emission, receiving end adopts the special process silicon photocell to gather and adopt multistage R-C coupling small signal amplification circuit in the level amplifying circuit of back, make the entire product signals collecting highly sensitive, the precision height that signal is judged.

2, can to reach the response test time be 1ms to this product, and the switching frequency of test is 300HZ, has very high test range and precision.

The signal that 3, the analog quantity of small-signal processing and amplifying filtering is not only arranged at the output terminal of signal, also export the signal of a stable switching value simultaneously through the processing of comparer and switching tube, the intersection of two kinds of signals can be better, more accurate detection and judgement object to be detected have reached the effect that quantizes and have said something in the measurement of parameter.

4, in the process of entire product design owing to mainly be that small-signal amplifies comparator circuit, power is less, so adopt little encapsulation surface mount elements in that circuit PCB design is complete, makes that this product structure is smaller and more exquisite, compact, circuit is more reliable.

Description of drawings

Fig. 1 is a module block diagram of the present invention;

Fig. 2 is power module circuitry figure of the present invention;

Fig. 3 is a signal emission module circuit diagram of the present invention;

Fig. 4 is a signal receiving module circuit diagram of the present invention;

Fig. 5 is a positive logic output circuit of the present invention;

Fig. 6 is negative logic output circuit figure of the present invention;

Fig. 7 is signal indicating circuit figure of the present invention.

Embodiment

For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.

As Fig. 1---shown in Figure 7, a kind of colour code detecting device is characterized in that: be made of with indicating module power module, signal emission module, signal receiving module and output control;

The power module input end is by 4148 paster three-terminal regulator blocks and peripheral components capacitor C 1, C2, C3, C4, resistance R 1, R2, reverse polarity protection's diode D2 forms, when input voltage is between 15 to 24V, the input prime adds 2 grades of filtering clutters and reverse-voltage protection, output terminal makes the power supply of output more stable by the C5 capacitor filtering, does not have the assorted signal of disturbing;

Signal emission module is by resistance R 15, and capacitor C 10 is formed filtering circuit interference filtering, and then by resistance R 3, R12, R13, the on-off circuit that V5, LED1 form is lighted power valve and sent signal;

Signal receiving module is made up of three grades of small-signal Resistance and Capacitance Coupled Amplification Circuit, the first order is by triode Q1, resistance R 16, R17, R18, capacitor C 11, V1, formation total radio amplifier, the total radio amplifier that the second level is made up of R19, R20, C12, V2, the total radio amplifier that the third level is made up of adjustable resistance RP1, resistance R 21, capacitor C 13, V3, front and back level DC channel is isolated from each other, the quiescent point of each grade is all separate, is convenient to analyze, designs and uses;

Output control mainly is made up of positive and negative logic amount output signal and signal indicating circuit with indicating module, positive logic amount output circuit is by resistance R 6, capacitor C 7, U3A, the U3B phase inverter is formed prime Filtering Processing circuit, relatively exporting through U2A amplifier comparer then, another part negative logic amount output circuit is by capacitor C 9, phase inverter U3C, U3D, diode D6 forms the prime treatment circuit, relatively export through U2B amplifier comparer then, signal indicating circuit is by isolating switch DZ1, resistance R 7, R8, R9, diode D4, D5, LED2 forms, pilot lamp is lighted in the triode conducting when positive logic amount output low level.

More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.

Claims

1. a colour code detecting device is characterized in that: be made of with indicating module power module, signal emission module, signal receiving module and output control;

Described power module input end is by 4148 paster three-terminal regulator blocks and peripheral components capacitor C 1, C2, C3, C4, resistance R 1, R2, and reverse polarity protection's diode D2 forms, and output terminal is made up of C5 electric capacity;

Described signal emission module is by resistance R 15, and capacitor C 10 is formed filtering circuit, and then by resistance R 3, R12, R13, V5, LED1 form on-off circuit;

Described signal receiving module is made up of three grades of small-signal Resistance and Capacitance Coupled Amplification Circuit, the first order is by triode Q1, resistance R 16, R17, R18, capacitor C 11, V1 constitute total radio amplifier, the total radio amplifier that the second level is made up of R19, R20, C12, V2, the total radio amplifier that the third level is made up of adjustable resistance RP1, R21, capacitor C 13, V3, front and back level DC channel is isolated from each other;

Described output control and indicating module mainly are made up of positive and negative logic amount output signal and signal indicating circuit, described positive logic amount output circuit is by resistance R 6, capacitor C 7, U3A, the U3B phase inverter is formed prime Filtering Processing circuit, relatively exporting through U2A amplifier comparer then, another part negative logic amount output circuit is by capacitor C 9, phase inverter U3C, U3D, diode D6 forms the prime treatment circuit, relatively export through U2B amplifier comparer then, described signal indicating circuit is by isolating switch DZ1, resistance R 7, R8, R9, diode D4, D5, V4, LED2 forms.