CN202305754U

CN202305754U - Capacitance touch button detector

Info

Publication number: CN202305754U
Application number: CN2011203758037U
Authority: CN
Inventors: 龙涛; 严松; 王莹
Original assignee: Jiangsu Huitong Group Co Ltd
Current assignee: Jiangsu Huitong Group Co Ltd
Priority date: 2011-09-28
Filing date: 2011-09-28
Publication date: 2012-07-04
Anticipated expiration: 2021-09-28

Abstract

The utility model discloses a capacitance touch button detector which includes a first micro-processing chip, an output module, an input switching module, a power supply module, and a detected device. The first micro-processing chip has the A/D converting function. The detected device is connected with the input terminal of the input switching module. The output terminal of the input switching module is connected with the input terminal of the first micro-processing chip. The output terminal of the first micro-processing chip is connected with the output module. The power supply module is connected with the power supply input terminal of the first micro-processing chip. The capacitance touch button detector can realize the efficient and rapid detection of the voltage value, the current value, and the communication data between a button and a main device of a capacitance touch button product. Compared with a conventional device, the capacitance touch button detector is low in cost, small in power consumption, and is strong in filtering anti-interference performance, and can be used in the non-capacitance touch button field.

Description

Capacitance touch button detector

Technical field

The utility model relates to a kind of electron device detector, relates in particular to a kind of detector that is used to detect capacitance touch button electrical characteristics and communication data, belongs to the detection of electrons field.

Background technology

Nowadays capacitance touch equipment emerges in an endless stream, and the mobile phone of very powerful and exceedingly arrogant IPHONE, HTC, three magnitude manufacturer production is arranged, and the mobile unit that also has limousine to produce comprises the capacitance touch button that replaces mechanical keypress function on the televisor.Capacitance touch electron device purposes is extensive; Made things convenient for people's life; But guarantee reliability of products, need be to voltage, the electric current of capacitance touch press key equipment, and the communication data between press key equipment and the controlled device whether conformance with standard detects.To guarantee security, the reliability of volume production equipment, improve productivity effect.

Summary of the invention

The purpose of the utility model is to provide a kind of capacitance touch button detector, to satisfy now the detection demand to the communication data of magnitude of voltage, current value and the button of capacitive touch button product and main equipment.

The purpose of the utility model is achieved through following technical scheme:

A kind of capacitance touch button detector; Comprise the first little process chip 1, output module 2, input interconnecting module 3, power module 4, equipment to be detected 6; Said first little process chip 1 has the A/D translation function, and equipment 6 to be detected connects the input end of input interconnecting module 3, and the output terminal of input interconnecting module 3 connects first little process chip 1 input end; First little process chip 1 output terminal connects output module 2, and power module 4 connects first little process chip 1 power input.

The purpose of the utility model can also further realize through following technical measures:

Aforementioned electric capacity touch key-press detector, wherein first little process chip 1 has IIC communication protocol functions or SPI communication protocol functions or UART communication protocol functions, communicates by letter with equipment 6 to be detected;

Aforementioned electric capacity touch key-press detector also comprises second little process chip 5, and said second little process chip 5 output terminals connect the input end of first little process chip 1.The clock signal that second little process chip 5 generation frequencies 0～500MHz is flows to first little process chip 1, the first little process chip 1 and again clock signal is offered equipment 6 to be detected;

Aforementioned electric capacity touch key-press detector, wherein second little process chip 5 has IIC communication protocol functions or SPI communication protocol functions or UART communication protocol functions, communicates by letter with first little process chip 1;

Aforementioned electric capacity touch key-press detector, wherein output module 2 is a LCD display.

Compared with prior art, the beneficial effect of the utility model is: efficient, the high speed detection of communication data that can realize magnitude of voltage, current value and button and the main equipment of capacitive touch button product.With existing apparatus in comparison, cost is low, power consumption is little, the filtering strong interference immunity, and can be used in the button field that noncapacitive touches character.

Description of drawings

Fig. 1 is the circuit structure diagram of the utility model.

Embodiment

Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.

As shown in Figure 1, capacitance touch button detector comprises the first little process chip 1, output module 2, input interconnecting module 3, power module 4, equipment to be detected 6, and wherein output module 2 is a LCD display.Said first little process chip 1 has the A/D translation function; Equipment 6 to be detected connects the input end of input interconnecting module 3; The output terminal of input interconnecting module 3 connects first little process chip 1 input end; First little process chip 1 output terminal connects output module 2, and power module 4 connects first little process chip 1 power input.The utility model also comprises second little process chip 5, and said second little process chip 5 output terminals connect the input end of first little process chip 1.The clock signal that second little process chip 5 generation frequencies 0～500MHz is flows to first little process chip 1, the first little process chip 1 and again clock signal is offered equipment 6 to be detected.The button electric current, voltage, the key value that the detection of capacitance touch button electrical characteristics are comprised equipment 6 to be detected; Key value can be that analog signal conversion is the data of digital signal; Can be the data that convert 16 systems into, be presented at after the detection on the LCD, can make comparisons with the data that normally will obtain; If identical then equipment is normal, otherwise Equipment Inspection is defective.

First little process chip 1 of the utility model and second little process chip 5 are to adopt the MSP430 Series chip of low-power consumption; It is one 16 single-chip microcomputer; Adopted the reduced instruction structure set; Has abundant addressing mode: 7 kinds of source operand addressing, 4 kinds of destination operand addressing, succinct 27 core instructions and a large amount of dummy instructions; Data-carrier store all can be participated in multiple computing in a large amount of registers and the sheet; The processing instruction of tabling look-up efficiently in addition can certainly adopt other single-chip microcomputer, does not hinder the development of detecting instrument.First little process chip 1 connects input interconnecting module 3; Input interconnecting module 3 just plays and serves as different interface conversion to equipment to be detected and first little process chip 1, and equipment to be detected is wanted volume production, and then necessary interface is simple; 5 contact pin types of the 2.54mm of use standard; Comprise sda, scl, vdd, gnd, rest pin interface, be transferred on the input interconnecting module 3, realize communicating by letter with first little process chip 1 again.

When handling the electrical characteristics signal, need use the AD translation function of first little process chip 1, also need uart serial ports connect chip in the communication certainly; The utility model adopts the max232 family chip, because power module 4 power supplies are 220v, and the power supply of 50Hz; Ensure the proper communication of SCL, SDA, power protection is necessary, and voltage stabilizing, filtering are essential; But, do not add and give unnecessary details not at the protection category of the utility model.

Because first little process chip 1 generally adopts IIC to communicate by letter with equipment to be detected; Need a chip that produces the ripple signal, second little process chip 5 uses modes such as SPI, UART to be connected with little process chip 1, and the ripple signal that little process chip 5 produces 0-500MHz disturbs equipment to be detected; If ability operate as normal in the product requirement 300MHz; The ripple signal of 250MHz enables device keys inefficacy to be detected as a result, and then product is defective, and the effect of second little process chip 5 promptly is this.

After detecting the information of button voltage, electric current and key value of equipment; First little process chip 1 is carried out the AD conversion; Be connected with output module 2 again; Information such as the electric current of Production Version to display, button, voltage, key assignments are presented on the LCD of output module 2, are convenient to the quality testing personnel and consult.

Except that the foregoing description, the utility model can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.

Claims

1. capacitance touch button detector; Comprise first little process chip (1), output module (2), input interconnecting module (3), power module (4), equipment to be detected (6); It is characterized in that; Said first little process chip (1) has the A/D translation function, and equipment to be detected (6) connects the input end of input interconnecting module (3), and the output terminal of input interconnecting module (3) connects first little process chip (1) input end; First little process chip (1) output terminal connects output module (2), and power module (4) connects first little process chip (1) power input.

2. capacitance touch button detector as claimed in claim 1 is characterized in that, said first little process chip (1) has IIC communication protocol functions or SPI communication protocol functions or UART communication protocol functions, communicates by letter with equipment to be detected (6).

3. capacitance touch button detector as claimed in claim 1; It is characterized in that; Also comprise second little process chip (5); Said second little process chip (5) output terminal connects the input end of first little process chip (1), and second little process chip (5) generation frequency is that the clock signal of 0～500MHz flows to first little process chip (1), and first little process chip (1) offers equipment to be detected (6) with clock signal again.

4. capacitance touch button detector as claimed in claim 3 is characterized in that, said second little process chip (5) has IIC communication protocol functions or SPI communication protocol functions or UART communication protocol functions, communicates by letter with first little process chip (1).

5. like claim 1 or 2 or 3 or 4 described capacitance touch button detectors, it is characterized in that said output module (2) is a LCD display.