CN205786858U

CN205786858U - Touch screen resistor detecting device

Info

Publication number: CN205786858U
Application number: CN201620538866.2U
Authority: CN
Inventors: 徐浩
Original assignee: SUZHOU NEW TOUCH TECHNOLOGY CO LTD
Current assignee: SUZHOU NEW TOUCH TECHNOLOGY CO LTD
Priority date: 2016-06-06
Filing date: 2016-06-06
Publication date: 2016-12-07
Anticipated expiration: 2026-06-06

Abstract

A kind of touch screen resistor detecting device, is connected with display module, memory module, testing circuit module and resistance detection module including processing module, described processing module；Contact with four pins of electric resistance touch screen during described testing circuit module testing, form the testing circuit for each resistance；Described resistance detection module is connected with described testing circuit module and detects each resistance and send detected value to described processing module；Switching between the testing circuit of each resistance that described processing module controls described testing circuit module；And the resistance detection value received is compared；Described display module shows data and the parameter being received from processing module.Detector measuring accuracy is high, detects reproducible.The application of this detector substantially increases detection efficiency, facilitates production.

Description

Touch screen resistor detecting device

Technical field

This utility model relates to touch screen, refers in particular to the resistor detecting device at electric resistance touch screen.

Background technology

Touch screen is as a kind of sensor, and in all trades and professions such as life, manufacturing industry, application is more and more extensive.Exist at present The touch screen used on market is roughly divided into two big classes, resistive touch screen and capacitive touch screen.

Resistive touch screen is substantially all to scribble in the one side that the thin film structure plus glass, thin film and glass are adjacent ITO(nano indium tin metal-oxide) coating, ITO has good electric conductivity and the transparency.When touch operation, thin film lower floor ITO can touch the ITO of glass superstrate, spread out of the corresponding signal of telecommunication via induction apparatus, deliver to processor through change-over circuit, The X that is converted on screen by computing, Y value, and complete the action clicked, and be presented on screen.The work of electric resistance touch screen Principle mainly realizes the operation to screen content and control by pressure sensitive principle, and this screen body of touch screen part is One piece of multi-layer compound film coordinated with display surface very resistive touch screen, wherein ground floor is glass or organic glass Glass bottom, the second layer is interlayer, and third layer is polynary resin surface layer, and surface is also coated with the conductive layer of layer of transparent, covers There is one layer of outer surface scratch resistant plastic layer hardened, smooth.Conducting shell and glassy layer sensing at polynary fat skin surface Device is separated electric current by top layer by many small interlayers, when touching top layer pressure, touches bottom, controller simultaneously from Four angles read the electric current matched and calculate the distance of finger position.This touch screen utilizes the conductive layer of two-layer high transparency to form Touch screen, the spacing of two-layer is only 2.5 microns.When a finger is touching the screen, the two conductive layers of usual mutually insulated just exists There has been a contact position, touch point, because wherein conductive layer connects the 5V even voltage field of Y direction so that detecting layer Voltage is become non-zero from zero, and controller detects after this connects, and carries out A/D conversion, and by the magnitude of voltage that obtains compared with 5V, The Y-axis coordinate of touch point, in like manner draw the coordinate of X-axis, here it is common most basic of all resistive technologies touch screens Principle.

Capacitance-type touch screen technology is that the electric current sensing utilizing human body is operated.Capacitive touch screen is one piece four layers Compound glass screen, the inner surface of glass screen and interlayer respectively scribble one layer of ITO, and outermost layer is a thin layer silicon soil glassivation, folder Layer ITO coating, as work surface, four angles is drawn four electrodes, and internal layer ITO is that screen layer is to ensure good working environment. When finger touches on the metal layer, owing to human body electric field, user and touch screen surface are formed with a coupling electric capacity, for height Frequently for electric current, electric capacity is direct conductor, and then finger siphons away a electric current the least from contact point.This electric current is respectively from touching Touch in the electrode on the corner of screen and flow out, and the distance of the electric current and finger to corner flowing through these four electrodes is directly proportional, control Device processed, by the accurate calculating to these four current ratios, draws the position of touch point.Capacitance plate multi-point touch to be realized, leans on Just it is to increase the electrode of mutual capacitance, briefly, it is simply that by screen block, one group of mutual capacitance module is set in each region All work alone, so capacitance plate just, can realize after processing with the touch-control situation of independent detection to each region simply Multi-point touch.Resistive touch screen and capacitive touch screen are more and more extensive in every field application, the production scale of touch screen The most increasing.

It is more and more extensive that current five wire resistive touchscreen are applied.In five wire resistive touchscreen production processes, usual line Property is bad could can only be found when finished product step function is tested substantially, owing to this test phase product has been finished product, and defective products Can only scrap.In order to find early in producing, revising in time, the waste reducing the most secondary bad and rear processing procedure material uses, and needs After the complete elargol of the glass printing that rolls off the production line, product is carried out line resistance inspection.General line resistance inspection is carried out by circuit tester , but existing defects, one be line resistance check time, each product need to check six groups of data, cause batch Laboratory Fee time expense Power, additionally needs comparison resistance difference two-by-two, it is impossible to automatically display and calculate difference such as ultra-specification value and cannot report to the police etc. bad existing As, cause detection to take time and effort.Two is that the probe pen of circuit tester is sharper, has damaged printing elargol.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of touch screen resistor detecting device, and it is right that it can realize Automatically the detection of the resistance of electric resistance touch screen and display automatically, report to the police during to ultra-specification Product checking, bad to prompt for. High degree improves detection efficiency.

For solving above-mentioned technical problem, the technical scheme that this utility model provides is a kind of touch screen resistor detecting device, It is characterized in that including processing module, described processing module and display module, memory module, testing circuit module and resistance detection Module connects；Contact with four pins of electric resistance touch screen during described testing circuit module testing, form the inspection for each resistance Slowdown monitoring circuit；Described resistance detection module be connected with described testing circuit module each resistance is detected and by detected value send To described processing module；Cutting between the testing circuit of each resistance that described processing module controls described testing circuit module Change；And the resistance detection value received is compared；Described display module shows data and the parameter being received from processing module.

Described testing circuit module includes inner looping and external loop, is provided with between described inner looping and described external loop Four connecting valves, described connecting valve is connected to an open switch, and described open switch one end connects testing needle； Described resistance detection module is connected with described inner looping and described external loop；Described processing module controls described testing circuit module Each switch cut-off.

Described processing module connects alarm module.

Resistor detecting device of the present utility model, by the automatic switchover of testing circuit, can be automatically to electric resistance touch screen Resistance detect.According to the difference between Determination resistance value and setting resistance value, whether automatic decision resistance meets Requirement.When resistance is undesirable, then detection device is reported to the police, and prompting detection resistive touch screen assembly is defective products, need to be to it Resistance value is revised.

This utility model simple in construction, can realize the automatic detection to electric resistance touch screen resistance value.Its disposable test six Group data, and compare two-by-two, calculate difference, ultra-specification product is reported to the police.Detection probe nib employs gold-plated stretching Contracting spring ball-point nib, improves measuring accuracy and decreases the damage to elargol.Detector can also preserve 50 groups of machines simultaneously Data are set, conveniently call.Detector measuring accuracy is high, detects reproducible.The application of this detector substantially increases detection Efficiency, facilitates production.

Accompanying drawing explanation

Fig. 1, this utility model structural representation.

Fig. 2, this utility model testing circuit structural representation.

Detailed description of the invention

For technique scheme, now lift a preferred embodiment and combine diagram and be specifically described.Referring to Fig. 1, this reality With the resistor detecting device of novel electric resistance touch screen, mainly include processing module, display module, memory module, alarm module, Resistance detection module, testing circuit module, wherein.

Processing module 1, for processor, respectively with memory module 2, alarm module 3, display module 4, resistance detection module 5 Connect with testing circuit module 6.Testing circuit module comprises testing circuit and detection test probe.Test probe and resistive touch Touch four pin contacts of screen, make between testing circuit and electric resistance touch screen, to form complete resistance detecting circuit.Resistance detection Module is connected with detection resistive module, detects and each resistance of the electric resistance touch screen of testing circuit module by detected value Send to processing module.Processing module sets detection program, different according to electric resistance touch screen specification, sets in processing module Resistance detection standard value.Difference between resistance value and the standard value that processing module receives exceedes detection range, then process Module sends signal to alarm module, and alarm module is reported to the police, and prompting operating personnel's product resistance value is abnormal, needs as not Non-defective unit is repaired.The resistance detection Value Data received can be sent and store to memory module by processing module, to ensure to look into Detection resistance value is called in inquiry.Processor is carried out parameter setting, detection resistance value etc. and all can be shown by display module, real Existing visualized operation interface.Its Cleaning Principle of resistance detection module is identical with measuring resistance by using universal meter principle.

Testing circuit module includes inner looping and external loop, is provided with four connecting valves between inner looping and external loop (K5, K6, K7, K8), has been also respectively connected with an open switch (K1, K2, K3, K4), each in each connecting valve one end Open switch one end connects a test probe, four pins of test probe and electric resistance touch screen A (PIN1, PIN2, PIN3, PIN4) contact carries out resistance test.Test probe nib is gold-plated coil tension spring ball-point nib.When test contact resistance of probe touches When touching screen, measuring accuracy can be improved, nib can be protected simultaneously will not to scratch the pin that silver slurry printing is made.Resistance detection module with Inner looping and external loop connect.When detecting resistance, control each connecting valve of testing circuit by processing module and cut-off The on an off of switch, determines where to organize the test of resistance.When actually detected resistance test, prepared in advance in processing module Certain testing process controls program, sets corresponding parameter, and when test, test device then can enter automatically according to the program set Detection numerical value is tested and recorded to row one by one, compares with the standard value set simultaneously, is reported to the police defective products.Concrete test Time, when surveying the resistance of PIN1, PIN2, K1, K5 connection connects external loop, and K2, K6 connection connects inner looping, and K3, K4 disconnect；Survey During PIN4, PIN5 resistance, K3, K7 connection connects external loop, and K4, K8 connection connects inner looping, and K1, K2 disconnect；Survey PIN1, PIN4 electricity During resistance, K1, K5 connection connects external loop, and K3, K7 connection connects inner looping, and K2, K4 disconnect；When surveying PIN2, PIN5 resistance, K2, K6 Connection connects external loop, and K4, K8 connection connects inner looping, and K1, K3 disconnect；When surveying PIN1, PIN5 resistance, K1, K5 connection connects outer returning Road, K4, K8 connection connects inner looping, and K2, K3 disconnect；When surveying PIN2, PIN4 resistance, K2, K6 connection connects external loop, and K3, K7 connect Connecing inner looping, K1, K4 disconnect.By this utility model resistor detecting device, two groups of resistance can be tested simultaneously, and it is entered Row compares.50 groups of data can be recorded simultaneously, check for calling at any time.

Claims

1. a touch screen resistor detecting device, it is characterised in that include processing module, described processing module and display module, deposit Storage module, testing circuit module and resistance detection module connect；With electric resistance touch screen four during described testing circuit module testing Pin contacts, and forms the testing circuit for each resistance；It is right that described resistance detection module is connected with described testing circuit module Each resistance carries out detecting and sending detected value to described processing module；Described processing module controls described testing circuit module Each resistance testing circuit between switching；And the resistance detection value received is compared；Described display module shows Show data and the parameter being received from processing module.

Touch screen resistor detecting device the most according to claim 1, it is characterised in that in described testing circuit module includes Loop and external loop, be provided with four connecting valves between described inner looping and described external loop, and described connecting valve is respectively Connecting and have an open switch, described open switch one end connects testing needle；Described resistance detection module and described inner looping Connect with described external loop；Described processing module controls cut-offfing of each switch of described testing circuit module.

Touch screen resistor detecting device the most according to claim 1, it is characterised in that described processing module connects warning Module.