CN107643469B - Keyboard button detection system and detection method thereof - Google Patents
Keyboard button detection system and detection method thereof Download PDFInfo
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Abstract
The invention discloses a keyboard button detection system and a detection method thereof, wherein the system comprises an intelligent acquisition card, the intelligent acquisition card is connected with a keyboard to be detected, generates and acquires key codes for conducted keys, and performs micro short circuit and LED lamp flashing detection on the keys; the calibration collector is electrically connected with the intelligent acquisition card; a plurality of pressure sensors connected with the calibration collector; the automatic pressing device is used for pressing the keyboard, and the pressure sensor is arranged on the automatic pressing device; the upper computer is electrically connected with the intelligent acquisition card and the calibration acquisition device; and the display device is connected with the upper computer. The invention can realize the automatic detection of the impedance of each key of the keyboard, the display condition of the LED lamp, the micro short circuit phenomenon and the sensitivity of the button, and has high detection accuracy and high detection efficiency.
Description
[ field of technology ]
The invention belongs to the technical field of button detection, and particularly relates to a keyboard button detection system and a detection method thereof.
[ background Art ]
In the current use habit of personal computers, a keyboard is one of the indispensable input devices for inputting characters, symbols or numbers. Moreover, in order to operate consumer electronic products and large processing equipment used in the industry, which are in contact with daily life, a key structure is required to be provided as an input device for operating the electronic products and the processing equipment.
After the keyboard is manufactured, the keyboard must be qualified after detection and then can be put on the market. In the prior art, patent application number 201410580595.2 discloses a keyboard input detection method and a detection system based on a mobile terminal, a predefined key code information table is adopted, the key code information table comprises key codes corresponding to each button one by one, when one or more cases are pressed on a keyboard, the keyboard sends the key codes of the pressed keys to an upper computer through an output pin, and the upper computer performs identification and comparison on the received key codes and then displays corresponding key contents. The method can only detect whether the key is conducted or not, can not detect whether the LED lamp existing in the key flashes or not, whether each key has a micro short circuit phenomenon, whether each key is in a normal sensitive range and other items, has the defect that the detection items are single and incomplete, and cannot meet the requirements of current clients.
In the prior art, patent application number 200810146707.8 discloses a keyboard test system, wherein a data acquisition device is used for acquiring key values and resistance values of each key in a keyboard, then the key values and the resistance values are converted into key-on information and then sent to an upper computer, and the upper computer is used for judging whether the key-on key values and the resistance values of the keys meet requirements or not through comparison analysis, so that a detection result is finally displayed. The method can only detect the key value and the resistance value after the key is conducted, can not detect other items such as whether the LED lamp in the key flashes, whether each key has a micro short circuit phenomenon, whether each key is in a normal sensitive range or not, and the like, and has the defects that the detection items are single and incomplete, and the current requirements of customers can not be met.
Therefore, there is a need to provide a new keyboard button detection system and detection method thereof to solve the above-mentioned problems.
[ invention ]
One of the main purposes of the invention is to provide a keyboard button detection system, which can realize the automatic detection of the impedance of each key of a keyboard, the display condition of an LED lamp, the micro-short circuit phenomenon and the sensitivity of the button, and has high detection accuracy and high detection efficiency.
The invention realizes the aim through the following technical scheme: a keyboard button detection system and detection method thereof comprises
The intelligent acquisition card is connected with the keyboard to be detected, generates and acquires key codes for the conducted keys, and performs micro-short circuit and LED lamp flashing detection on the keys;
the calibration collector is electrically connected with the intelligent acquisition card;
a plurality of pressure sensors connected with the calibration collector;
the automatic pressing device is used for pressing the keyboard, and the pressure sensor is arranged on the automatic pressing device;
the upper computer is electrically connected with the intelligent acquisition card and the calibration acquisition device;
and the display device is connected with the upper computer.
Further, the intelligent acquisition card comprises a main control board, a micro short circuit and an LED detection board, wherein the micro short circuit and the LED detection board are electrically connected with the main control board.
Further, the main control board comprises a first micro control unit, an optical coupler isolation output connected with the first micro control unit and a connection port module connected with the optical coupler isolation output, wherein the connection port module comprises a first port connected with the upper computer and a second port connected with the calibration collector.
Further, the micro short circuit and LED detection board comprises a second micro control unit, a relay group connected with the second micro control unit and a keyboard interface connected with the relay group.
Further, the number of the micro-short circuit and the LED detection plates is two.
Further, the calibration collector comprises a main control chip, a communication unit and a digital-to-analog conversion unit which are connected with the main control chip, an amplifier which is connected with the digital-to-analog conversion unit, and a third port which is communicated with the amplifier and the pressure sensor; the communication unit is communicated with the upper computer and the intelligent acquisition card through electric signals.
Another main object of the present invention is to provide a detection method of a keyboard button detection system, which includes the following steps,
s101: the intelligent acquisition card acquires key code information and uploads the key code information to the upper computer for storage, the content of each key code information corresponding to a key is manually input, and the impedance range of each key, the pressure value range when the key is conducted and the flashing condition of the LED lamp are set in the upper computer;
s102: the intelligent acquisition card continuously carries out cyclic detection on key codes, and simultaneously carries out micro short circuit and LED detection on each key; when one or more keys in the keyboard are conducted, the intelligent acquisition card detects a key code and sends the key code information to the upper computer, and simultaneously sends a signal to inform the calibration acquisition device; meanwhile, uploading test data of micro short circuit and LED detection to the upper computer;
s103: after receiving the key code information sent by the intelligent acquisition card, the upper computer compares the key code information with the corresponding key code information in the key code to obtain and record a detection result, and then the detection result is displayed in a display device;
s104: the calibration collector continuously uploads the pressure value to the upper computer all the time; and after the calibration collector receives the key-on signal sent by the intelligent collection card, an identification symbol is added behind the pressure value and the subsequent pressure value, and then the identification symbol is uploaded to the upper computer.
Further, the automatic pressing device is used for pressing each key in a qualified standard keyboard, after the key is conducted, the intelligent acquisition card forms a key code to be uploaded to the upper computer, and then the content attribute of each key is manually added to correspond to the key code one by one.
Compared with the prior art, the keyboard button detection system and the keyboard button detection method have the beneficial effects that: the impedance, micro-short circuit, conduction state, LED lamp flashing state and sensitivity degree of the key to pressure of the key can be detected simultaneously, the detection function is comprehensive, and the detection efficiency is high. In particular, the method comprises the steps of,
1) The calibration collector is designed to continuously upload pressure data to the upper computer, and an identification sign is added behind the pressure value uploaded after the key is conducted so as to automatically generate a pressure data curve in the upper computer, and a corresponding pressure value point when the key is conducted is displayed in the pressure data curve, so that a detector can intuitively know the sensitivity of the key;
2) Through designing intelligent acquisition card, detect the conduction state, the impedance size of button, little short circuit problem and the shiny state of LED lamp, greatly increased detecting system's functional performance for detect the project more comprehensive, and with each item detection integration of keyboard on a detection circuit board, combine button conduction state to detect together, improved detection efficiency greatly.
[ description of the drawings ]
FIG. 1 is a schematic diagram of a control module according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a control module of the intelligent acquisition card according to an embodiment of the invention;
fig. 3 is a schematic diagram of a control module of the standard collector in an embodiment of the present invention.
[ detailed description ] of the invention
Examples:
referring to fig. 1-3, the present embodiment is a keyboard button detection system, which includes an intelligent acquisition card, a calibration collector electrically connected to the intelligent acquisition card, a plurality of pressure sensors connected to the calibration collector, an upper computer electrically connected to the intelligent acquisition card and the calibration collector, a display device connected to the upper computer, and an automatic pressing device for pressing a keyboard, wherein the intelligent acquisition card is electrically connected to the keyboard, and the pressure sensors are installed on the automatic pressing device.
The intelligent acquisition card comprises a main control board, a micro short circuit and an LED detection board, wherein the micro short circuit is electrically connected with the main control board.
The main control board comprises a first micro control unit (MCU 1), an optical coupler isolation output connected with the first micro control unit and a connection port module connected with the optical coupler isolation output, wherein the connection port module comprises a first port connected with the upper computer and a second port connected with the calibration collector.
The micro-short circuit and LED detection board comprises a second micro-control unit (MCU 2), a relay group connected with the second micro-control unit and a keyboard interface connected with the relay group, wherein the keyboard interface is mainly used for connecting a keyboard. The micro short circuit and the LED detection are at least one, optimally two, are respectively positioned on two sides of the main control board and are used for being connected with two keyboards at one time, so that the detection is convenient to be performed alternately, the keyboard installation time is saved, and the detection efficiency is improved.
The intelligent acquisition card comprises the following functions: 1) Detecting the impedance of each key; 2) Detecting whether each key has a micro short circuit problem or not; 3) Detecting whether the LED lamp display of the key with the LED lamp display is normal or not; 4) The intelligent acquisition card can automatically generate key code information of keys, specifically, enables the automatic pressing device to press all keys on the keyboard once, then automatically generates a key code according to the conducting circuit of the keys and uploads the key code to the upper computer, each key corresponds to a unique key code, the system is convenient to know which key is specifically pressed when the automatic pressing device performs pressing action, and the upper computer can display the content of the key according to key signals conducted by the actual key action through the key code.
The calibration collector comprises a main control chip, a communication unit and a digital-to-analog conversion unit which are connected with the main control chip, an amplifier which is connected with the digital-to-analog conversion unit, and a third port which is communicated with the amplifier and the pressure sensor. The communication unit is communicated with the upper computer and the intelligent acquisition card through electric signals. The communication unit is connected with a second port in the main control board and the upper computer.
The main function of the calibration collector is to continuously transmit the pressure value acquired by the pressure sensor to the upper computer, when the calibration collector receives a key-on signal transmitted by the intelligent collection card, the calibration collector adds an identification symbol, such as 2.5F or 2.5H, behind the value transmitted to the upper computer, and as long as the upper computer receives the pressure value with the identification symbol, the pressure of the button is indicated to reach the first pressure value corresponding to the identification symbol, and the button can be turned on; the sensitivity degree of the key to pressure can be reflected from the magnitude of the numerical value, and if the numerical value of the pressure is too small, the corresponding key is excessively sensitive; if the pressure value is too large, the corresponding key sensitivity is too low, the phenomenon of heavy pressure exists, the two conditions are not in accordance with the requirements, and the upper computer needs to display NG.
The automatic pressing device comprises a Y-axis transferring device and a key hand device fixed at the movable end of the Y-axis transferring device, wherein the key receiving device presses each key once along with the Y-axis transferring device when the key receiving device walks along the keyboard once, and the pressure sensor is arranged at the position where the key hand device presses the key.
The detection method of the keyboard button detection system of the embodiment comprises the following steps:
s101: the intelligent acquisition card acquires key code information and uploads the key code information to the upper computer for storage, the content of each key code information corresponding to a key is manually input, and the impedance range of each key, the pressure value range when the key is conducted and the flashing condition of the LED lamp are set in the upper computer.
Specifically, the automatic pressing device is firstly used for pressing each key in a qualified standard keyboard, at this time, the intelligent acquisition card forms a key code and uploads the key code to the upper computer, and then the content attribute of each key is manually added to correspond to the key code one by one.
S102: the intelligent acquisition card continuously carries out cyclic detection on key codes, and simultaneously carries out micro short circuit and LED detection on each key; when one or more keys in the keyboard are conducted, the intelligent acquisition card can generate corresponding key code information, at the moment, the intelligent acquisition card sends the key code information to an upper computer and simultaneously sends a signal to inform the calibration acquisition device; and uploading the test data of the micro short circuit and the LED detection to the upper computer.
After the detection starts, the intelligent acquisition card simultaneously executes three commands of automatic operation detection, free acquisition, micro short circuit detection and LED detection. In particular, the method comprises the steps of,
a: in the automatic operation detection process, the intelligent acquisition card carries out a cyclic detection key code program, and when one or more keys in a keyboard are conducted, the intelligent acquisition card notifies the calibration acquisition device after detecting key code information;
b: in the free acquisition process, the intelligent acquisition card carries out a cyclic detection key code program, and after key code information is detected, the intelligent acquisition card sends the key code information to the upper computer;
c: in the micro short circuit detection and LED detection process, firstly switching the relay group, and starting a micro short circuit detection module to perform micro short circuit detection; then starting an LED detection module to perform LED lamp flashing detection; and finally uploading the detection result to the upper computer.
S103: after receiving the key code information sent by the intelligent acquisition card, the upper computer compares the key code information with the corresponding key code information in the key code of the key, and simultaneously displays the content of the corresponding key; meanwhile, comparing the impedance and the flashing situation of the LED lamp, and recording the detection result as OK if the impedance is within a set range and the flashing situation of the LED lamp meets the requirements; if the comparison finds a problem, the recorded result is NG.
S104: and the calibration collector continuously uploads the pressure value to the upper computer all the time, and when the calibration collector receives a key-on signal sent by the intelligent collection card, an identification symbol is added behind the value and the subsequent pressure value and then uploads the value to the upper computer. The process of pressing the key downwards is decomposed, so that the key is certainly conducted when a certain value is required to be conducted along with the gradual increase of the pressure of pressing the key, and before the key is conducted, the calibration collector uploads pure pressure values, such as 2.5, 2.6 and 2.8 … …, to the upper computer; if the pressure is increased to 3 newtons, the key is just turned on, and the calibration collector is provided with an identification symbol, such as 3F, 3.2F and 3.5F … …, after the pressure value is uploaded to the upper computer. The upper computer can automatically generate a pressure value graph according to the data uploaded by the calibration collector, and a first data point with a marking symbol is displayed in the cover pressure value graph, so that the pressure value required by key conduction can be intuitively seen, and the sensitivity of the key to pressure is reflected.
S105: the upper computer generates and sorts data according to the data uploaded by the intelligent acquisition card and the calibration acquisition device through comparison analysis, and if a button which cannot be normally conducted, has a micro-short circuit problem or cannot normally flash is arranged, the area corresponding to the button is marked by a red frame in final result display, and if the button is normal, the area is marked by a green frame.
The keyboard button detection system and the keyboard button detection method have the beneficial effects that: the impedance, micro-short circuit, conduction state, LED lamp flashing state and sensitivity degree of the key to pressure of the key can be detected simultaneously, the detection function is comprehensive, and the detection efficiency is high. In particular, the method comprises the steps of,
1) The calibration collector is designed to continuously upload pressure data to the upper computer, and an identification sign is added behind the pressure value uploaded after the key is conducted so as to automatically generate a pressure data curve in the upper computer, and a corresponding pressure value point when the key is conducted is displayed in the pressure data curve, so that a detector can intuitively know the sensitivity of the key;
2) Through designing intelligent acquisition card, detect the conduction state, the impedance size of button, little short circuit problem and the shiny state of LED lamp, greatly increased detecting system's functional performance for detect the project more comprehensive, and with each item detection integration of keyboard on a detection circuit board, combine button conduction state to detect together, improved detection efficiency greatly.
What has been described above is merely some embodiments of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.
Claims (7)
1. A detection method of a keyboard button detection system is characterized in that: the keyboard button detection system includes:
the intelligent acquisition card is connected with the keyboard to be detected, generates and acquires key codes for the conducted keys, and performs micro-short circuit and LED lamp flashing detection on the keys;
the calibration collector is electrically connected with the intelligent acquisition card;
a plurality of pressure sensors connected with the calibration collector;
the automatic pressing device is used for pressing the keyboard, and the pressure sensor is arranged on the automatic pressing device;
the upper computer is electrically connected with the intelligent acquisition card and the calibration acquisition device; and
the display device is connected with the upper computer;
the detection method of the keyboard button detection system comprises the following steps:
s101: the intelligent acquisition card acquires key code information and uploads the key code information to the upper computer for storage, the content of each key code information corresponding to a key is manually input, and the impedance range of each key, the pressure value range when the key is conducted and the flashing condition of the LED lamp are set in the upper computer;
s102: the intelligent acquisition card continuously carries out cyclic detection on key codes, and simultaneously carries out micro short circuit and LED detection on each key; when one or more keys in the keyboard are conducted, the intelligent acquisition card detects a key code and sends the key code information to the upper computer, and simultaneously sends a signal to inform the calibration acquisition device; meanwhile, uploading test data of micro short circuit and LED detection to the upper computer;
s103: after receiving the key code information sent by the intelligent acquisition card, the upper computer compares the key code information with the corresponding key code information in the key code to obtain and record a detection result, and then the detection result is displayed in a display device;
s104: the calibration collector continuously uploads the pressure value to the upper computer all the time; and after the calibration collector receives the key-on signal sent by the intelligent collection card, an identification symbol is added behind the pressure value and the subsequent pressure value, and then the identification symbol is uploaded to the upper computer.
2. The method for detecting a keyboard button detection system according to claim 1, wherein: the intelligent acquisition card comprises a main control board, a micro short circuit and an LED detection board, wherein the micro short circuit is electrically connected with the main control board.
3. The method for detecting a keyboard button detection system according to claim 2, wherein: the main control board comprises a first micro control unit, an optical coupler isolation output connected with the first micro control unit and a connection port module connected with the optical coupler isolation output, wherein the connection port module comprises a first port connected with the upper computer and a second port connected with the calibration collector.
4. The method for detecting a keyboard button detection system according to claim 2, wherein: the micro short circuit and LED detection board comprises a second micro control unit, a relay group connected with the second micro control unit and a keyboard interface connected with the relay group.
5. The method for detecting a keyboard button detection system according to claim 2, wherein: the number of the micro short circuit and the LED detection boards is two.
6. The method for detecting a keyboard button detection system according to claim 1, wherein: the calibration collector comprises a main control chip, a communication unit and a digital-to-analog conversion unit which are connected with the main control chip, an amplifier which is connected with the digital-to-analog conversion unit and a third port which is communicated with the amplifier and the pressure sensor; the communication unit is communicated with the upper computer and the intelligent acquisition card through electric signals.
7. The method for detecting a keyboard button detection system according to claim 1, wherein: the step S101 specifically includes using the automatic pressing device to press each key in a qualified standard keyboard, after the key is turned on, the smart acquisition card forms a key code and uploads the key code to the upper computer, and then manually adding the content attribute of each key to correspond to the key code one by one.
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