CN204462329U

CN204462329U - A kind of tongue tube button detects tool circuit

Info

Publication number: CN204462329U
Application number: CN201520055164.4U
Authority: CN
Inventors: 张赫
Original assignee: RUIPU SANYUAN METER CO Ltd BEIJING
Current assignee: RUIPU SANYUAN METER CO Ltd BEIJING
Priority date: 2015-01-27
Filing date: 2015-01-27
Publication date: 2015-07-08
Anticipated expiration: 2025-01-27

Abstract

The utility model discloses a kind of tongue tube button and detect tool circuit, comprise and export the emitting led pilot lamp of prompting for button testing result, export sounding buzzer and the power supply of prompting for button testing result; Also comprise: a microprocessor chip; One button detects interface; Described emitting led pilot lamp is made up of three LED, receives on three general I/O interface of microprocessor chip respectively; Described sounding buzzer is connected on a general I/O interface of microprocessor chip by a switch triode; Three switch signal line that described button detects interface are connected respectively in the common junction of three general I/O interface of three LED light and microprocessor chip; Described power supply detects tool circuit to whole tongue tube button by a power supply jumper switch be connected in series and powers; Its testing result way of output is intuitively efficient, and circuit self power consumption is small, is conducive to energy-conservation.

Description

A kind of tongue tube button detects tool circuit

Technical field

The utility model relates to a kind of detection of electrons tool circuit, being specifically related to a kind of detection tool circuit (hereinafter referred to as detection tool circuit) for detecting tongue tube button usefulness, belonging to electronic instrument technical field.

Background technology

Traditional button break-make detection method, generally two terminals using two test pencils of multimeter to contact keyswitch respectively, touch switch afterwards, test result by means of multimeter judges the quality of switch usefulness, for there being multiple keyswitch group all-in-one-piece key combination, detect the quality of wherein each button, especially switch combination extension line specification change into the situation of unified connector leading-out form, go measurement very inconvenient with pen meter of universal meter again, test pencil cannot directly contact the metal terminal being embedded in connector plastic construction inside, even if try every possible means, interim extension line overlap joint is measured, for the batch detection demand quick and precisely measuring which switch quality concrete in switches set, multimeter measuring method is very inapplicable.

Utility model content

The purpose of this utility model is to provide a kind of portable easy-to-use tongue tube button and detects tool circuit, and its testing result way of output is intuitively efficient, and circuit self power consumption small be conducive to energy-conservation.

For achieving the above object, the utility model takes following design proposal:

A kind of tongue tube button detects tool circuit, comprises and exports the emitting led pilot lamp of prompting for button testing result, export sounding buzzer and the power supply of prompting for button testing result; It also includes:

One microprocessor chip;

One button detects interface;

The described emitting led pilot lamp for button testing result output prompting is made up of three LED, receives on three general I/O interface of microprocessor chip respectively;

The described sounding buzzer for button testing result output prompting is connected to a general I/O interface of microprocessor chip by a switch triode;

Three switch signal line that described button detects interface are connected respectively in the common junction of three general I/O interface of three LED light and microprocessor chip;

Described power supply detects tool circuit to whole tongue tube button by a power supply jumper switch be connected in series and powers.

Described tongue tube button detects in tool circuit, and described button detects the connector that interface is four terminals, and one of them terminal is common ground terminal, and other three terminals are to receive three switch signal line exported from dry spring button.

Described tongue tube button detects in tool circuit, and described power supply is the button cell be fixedly installed on circuit; The dump of this button cell realizes by taking down arranged power supply jumper switch short circuit cap.

Described tongue tube button detects in tool circuit, and described microprocessor chip is the chip with Low-power-consumptiodormancy dormancy function, and when push button signalling not detected, this detection tool circuit is in battery saving mode; When having detected that button is pressed, this detection tool circuit is just by momentary actuation, and judges and process, after providing corresponding acousto-optic hint, enters the dormant state detecting actuation of keys next time more at once.

Described tongue tube button detects in tool circuit, and described microprocessor chip adopts ATmega8 single-chip microcomputer.

The utility model has the advantages that:

1. can the quality of disposable detection one group of three switch usefulness, be compared to the method using traditional multimeter Test Switchboard group quality, than easy and simple to handle, reliable by the mode of contact measurement one by one of pen meter of universal meter, testing efficiency improves greatly;

2. under normality, circuit main control chip (microprocessor chip) is in the park mode of low power consumption, and the moment monitor three key-press input Interface status, once detect that button is pressed, chip is waken up activation and temporarily enters active operating state, and automatic decision specifically which key press, and then provide acousto-optic hint one to one, recover the park mode entering low power consumption afterwards, reach the object of saving battery power.

Accompanying drawing explanation

Fig. 1 is that the utility model is for detecting the detection tool circuit electrical schematic diagram of dry spring button usefulness.

Below in conjunction with drawings and the specific embodiments, the utility model is described further.

Embodiment

Shown in Figure 1, the utility model mainly includes a microprocessor chip U1 for the detection tool circuit detecting dry spring button usefulness, a button detects interface connector H1, exports the emitting led pilot lamp group of prompting, exports prompting for button testing result for button testing result sounding buzzer BEEP and power supply PWR.

Form luminous prompting circuit by LED1 ~ LED3 tri-light emitting diode lamps, after their negative pole end detects interface H1 respectively switch signal line with described button connects, be connected on the universal I/O port line of microprocessor main control chip U1; Described auditory tone cues exports hummer BEEP and is connected on a universal I/O port line (control output end) of microprocessor main control chip U1 by controlled after the base stage current-limiting resistance R5 of switch triode VT1, VT1; Button cell as power supply PWR powers to whole circuit by a power supply jumper switch J1 be connected in series.In addition, be connected to the current limliting of R1 ~ R3 for LED diode of the anode tap of positive source and LED1 ~ LED3, the cathode terminal of LED1 ~ LED3 again respectively contact resistance R6 ~ R8 to power supply just to make pull-up resistor.

As the utility model preferred version, the power supply of the detection tool circuit of described dry spring button usefulness can adopt the button cell be fixedly installed on this circuit.

As preferably, the power supply jumper switch that described power supply button cell is also connected in series by realizes powering to whole detection tool circuit, so that the used time does not take off the deflating cap of power supply jumper switch to disconnect button cell, avoids its continuation power consumption.

As preferably, microprocessor main control chip U1 selects ATmega8 chip microprocessor, and set in the control program embedded in this chip microprocessor: 1. under microprocessor program controls, the luminous prompting circuit of three described LED compositions, it is good that each LED all represents instruction one way switch closure state with illuminating state correspondence.After button release, the corresponding LED light lighted is extinguished immediately.2. it is good that the sounding buzzer for button testing result output prompting described in represents instruction three-way switch closure state with different difference sounding.

Described ATmega8 chip microprocessor has Low-power-consumptiodormancy dormancy function, between the normal operating period, battery saving mode is in by programmed control circuit when push button signalling not detected, only when having detected that button is pressed just by momentary actuation, and judge that Shi Na road button is pressed, after providing corresponding acousto-optic hint, enter the dormant state detecting actuation of keys next time more at once.

The utility model is succinct for the detection tool circuit design detecting dry spring button usefulness, physical dimension can be accomplished small and exquisite portable, four signal accessory power outlet terminals of detected dry-reed tube switch button group directly can be plugged into described button and detect in the four-core pin terminal of interface H1, button just can detect, the way of output of testing result is intuitively efficient, and has sound-light double prompting mode simultaneously.

The various embodiments described above can not to depart under scope of the present utility model in addition some changes, therefore above explanation comprises and should be considered as exemplary, and is not used to limit the protection domain that the utility model applies for a patent.

Claims

1. tongue tube button detects a tool circuit, comprises and exports the emitting led pilot lamp of prompting for button testing result, export sounding buzzer and the power supply of prompting for button testing result; Characterized by further comprising:

One microprocessor chip;

One button detects interface;

The described sounding buzzer for button testing result output prompting is connected to a general I/O interface of microprocessor chip by a switch triode (VT1);

2. tongue tube button as claimed in claim 1 detects tool circuit, it is characterized in that: described button detects the connector that interface (H1) is four terminals, one of them terminal is common ground terminal, and other three terminals are to receive three switch signal line exported from dry spring button.

3. tongue tube button as claimed in claim 1 detects tool circuit, it is characterized in that: described power supply is the button cell be fixedly installed on circuit; The dump of this button cell realizes by taking down arranged power supply jumper switch short circuit cap.

4. tongue tube button as claimed in claim 1 detects tool circuit, and it is characterized in that: described microprocessor chip is the chip with Low-power-consumptiodormancy dormancy function, when push button signalling not detected, this detection tool circuit is in battery saving mode; When having detected that button is pressed, this detection tool circuit is just by momentary actuation, and judges and process, after providing corresponding acousto-optic hint, enters the dormant state detecting actuation of keys next time more at once.

5. tongue tube button as claimed in claim 1 detects tool circuit, it is characterized in that: described microprocessor chip adopts ATmega8 chip microprocessor.