CN209525033U - A kind of finger pressure detection device networked - Google Patents

Abstract

The utility model discloses the finger pressure detection devices that one kind can network, comprising: galvanic electricity source, control unit, input circuit, finger pressure detection circuit, finger pressure feed circuit, finger pressure data transmission circuit；The composition of input circuit includes: unidirectional obliquity sensor, yellow led 1 and corresponding resistance R6, a buzzer and corresponding resistance R7；The composition of finger pressure detection circuit includes: five pressure sensors FSR1, FSR2, FSR3, FSR4, FSR5 and five corresponding resistance R1, R2, R3, R4, R5；The composition of finger pressure feed circuit includes: five bar-shaped LED column modules, LCD and rotating potentiometer R8；The composition of finger pressure data transmission circuit includes: WiFi module；The anode of DC power supply is connected with circuit anode.The utility model can separately or concurrently carry out pressure detecting to five fingers, obtain information feedback from two channels of vision and the sense of hearing, meet actual operation requirements.

Description

A networkable finger pressure detection device

technical field

The utility model relates to a networkable finger pressure detection device, which belongs to the technical field of pressure detection.

Background technique

With the continuous development of human-computer interaction technology, the finger pressure detection device has an indispensable application research value in many aspects of human-computer interaction, such as human body perception and environmental perception. For example: use the finger pressure detection device to calculate the position of the user's finger to optimize the user's finger operation on the man-machine interface, thereby improving the user's operation efficiency and bottoming out the user's cognitive load on the man-machine interface; another example: using the finger pressure detection device to detect the user's pressing According to the force level when touching the screen, different interface operation functions are designed, so as to complete more human-computer interaction tasks in complex human-computer interfaces. Therefore, it is very necessary to design a finger pressure detection device that can quickly detect finger pressure and obtain finger pressure data to the PC or smart phone in real time.

Utility model content

The utility model aims at detecting and analyzing finger pressure in the field of human-computer interaction, and provides a finger pressure detection device that can be networked. The detection device obtains feedback information through visual and auditory channels to inform the user of the pressure of different fingers. And send the finger pressure data to the PC or smart phone in real time, so as to provide experimental data for human-computer interaction finger position detection, finger strength level analysis, etc., to meet the needs of experimenters, and it is both practical and interesting .

In order to solve the above problems, the technical scheme adopted by the utility model is as follows:

A networkable finger pressure detection device, comprising: a DC power supply, a control unit, an information input circuit, a finger pressure detection circuit, a finger pressure feedback circuit, and a finger pressure data transmission circuit; the composition of the information input circuit includes: a one-way inclination angle Sensor, yellow LED1 and corresponding resistor R6, a buzzer and corresponding resistor R7; the composition of the finger pressure detection circuit includes: five pressure sensors FSR1, FSR2, FSR3, FSR4, FSR5 and five corresponding resistors R1, R2 , R3, R4, R5; the composition of the finger pressure feedback circuit includes: five bar-shaped LED column modules, which are LED column 1, LED column 2, LED column 3, LED column 4, LED column 5, an LCD and A rotary potentiometer R8; the composition of the finger pressure data transmission circuit includes: a WiFi module with ESP8266 as the core; the positive pole of the DC power supply is connected to the positive pole of the circuit, the negative pole of the DC power supply is connected to the GND of the circuit, and the R1, R2, R3, R4, R5, R6, R7 are all connected to the negative pole.

As an improvement of the above technical solution, the control unit model is a control chip, and is provided with a digital I/O interface and an analog I/O interface, and the analog I/O interface includes A0, A1, A2, A3, A4 and A5, The digital I/O interfaces include D0/RX, D1/TX, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12 and D13.

As an improvement of the above technical solution, the analog I/O interface A0 is used to read the data of the pressure sensor FSR1 and control the LED column 1 to light up the onboard LED, and the analog I/O interface A1 is used to read the data of the pressure sensor FSR2 to control LED column 2 lights up the onboard LED, the analog I/O interface A2 is used to read the data of the pressure sensor FSR3, controls the LED column 3 to light the onboard LED, and the analog I/O interface A3 is used to read the pressure sensor The FSR4 data controls the LED column 4 to light up the onboard LED, and the analog I/O interface A4 is used to read the data of the pressure sensor FSR5 and controls the LED column 5 to light up the onboard LED.

As an improvement of the above technical solution, the digital I/O interface D0/RX is connected to the TX port of the WiFi module, the digital I/O interface D1/TX is connected to the RX port of the WiFi module, and the digital I/O interface D2 is connected to the yellow LED1 , representing the normal working mode of the networkable finger pressure detection device; the digital I/O interface D3 is connected to a buzzer, and the buzzer is controlled to send out different sounds to respectively prompt the working mode and operation mode of the networkable finger pressure detection device Invalid detection mode; the digital I/O interface D4 is connected to a one-way inclination sensor, and reads the level state of the one-way inclination sensor to detect whether the networkable finger pressure detection device is in working mode; the digital I/O interface D6 Connect the D7 port of the LCD, the digital I/O interface D7 is connected to the D6 port of the LCD, the digital I/O interface D8 is connected to the D5 port of the LCD, and the digital I/O interface D9 is connected to the D4 port of the LCD, for Control pressure sensor data display.

As an improvement of the above technical solution, the signal port (S) of the unidirectional inclination sensor is connected to the digital I/O interface D4, and the yellow LED1 and the buzzer are connected to the digital I/O interface D2 and the digital I/O interface D3 respectively. When placed horizontally to the inclination sensor, the device starts to work, the yellow LED1 lights up, and the buzzer emits music 1 to remind the user that the device is in working condition; otherwise, the yellow LED1 goes out, the buzzer does not make a sound, indicating that the device is not working state.

As an improvement of the above technical solution, the VSS port of the LCD is connected to GND, the VDD port is connected to the positive pole, V0 is connected to the rotary potentiometer R8 signal port (S), the RS port is connected to the digital I/O interface D11, and the RW port is connected to to GND, EN port to digital I/O interface D12, LCD port D4 to control unit digital I/O interface D9, LCD port D5 to control unit digital I/O interface D8, LCD port D6 to The digital I/O interface D7 of the control unit, the D7 port of the LCD is connected to the digital I/O interface D6 of the control unit, the A port is connected to the resistor R9 and then connected to the positive pole, the K port is connected to GND, and the rotary potentiometer R8 is adjusted to control the brightness of the LCD backlight.

As an improvement of the above technical solution, the TX port of the WiFi module with ESP8266 as the core is connected to the digital I/O interface D0/RX of the control unit, the RX port is connected to the digital I/O interface D1/TX of the control unit, and the VCC port is connected to the positive pole of the control unit, GND Connect the control unit GND, and transmit the data of the pressure sensors FSR1, FSR2, FSR3, FSR4, and FSR5 from the device to the PC or smart phone in real time.

The utility model compares with prior art, and the implementation effect of the utility model is as follows:

(1) The utility model prompts the user whether the device is working normally through the one-way inclination sensor and the yellow LED1.

(2) The utility model prompts the user that the device is in the working state or invalid detection state through the buzzer emitting different sounds.

(3) The utility model uses five pressure sensors FSR1, FSR2, FSR3, FSR4, FSR5 and five strip LED column modules (LED column 1, LED column 2, LED column 3, LED column 4, LED column 5) phase Correspondingly, when the pressure sensor detects finger pressure, the corresponding onboard LED of the LED column is lit. As the finger pressure increases, the number of onboard LEDs on the LED column gradually increases until all 6 onboard LED columns are lit. The LED provides visual feedback to the user on the pressing force of the finger, which improves the fun of using the device.

(4) The utility model displays the pressure data of five pressure sensors FSR1, FSR2, FSR3, FSR4, and FSR5 through the LCD, and can perform pressure detection on five fingers simultaneously or separately, and display the pressure detection data of different fingers in the LCD The positions are predefined so that the user can correspond the pressure data with the detected finger.

(5) The utility model remotely connects to a PC or a smart phone through WiFi, and sends the pressure data of five pressure sensors FSR1, FSR2, FSR3, FSR4, and FSR5 to the PC or smart phone in real time for storage.

Description of drawings

Fig. 1 is a schematic diagram of the circuit structure of the networkable finger pressure detection device described in the present invention;

Fig. 2 is a schematic diagram of LCD ports selected by the networkable finger pressure detection device described in the present invention;

Fig. 3 is the overall flow chart of the networkable finger pressure detection device system of the present invention;

Fig. 4 is a flow chart of the invalid detection mode of the networkable finger pressure detection device described in the present invention;

Fig. 5 is a flow chart of performing pressure detection on different fingers by the networkable finger pressure detection device of the present invention;

Fig. 6 is a flow chart of simultaneous pressure detection of five fingers by the networkable finger pressure detection device of the present invention.

Detailed ways

The content of the present utility model will be described below in conjunction with specific embodiments.

As shown in Figures 1-6: a schematic diagram of the circuit structure of the networkable finger pressure detection device of the present invention, and a system flow chart of the networkable finger pressure detection device in normal operation and invalid detection.

The utility model is a networkable finger pressure detection device based on a pressure sensor, which includes: a DC power supply, a control unit, an information input circuit, a finger pressure detection circuit, a finger pressure feedback circuit, and a finger pressure data transmission circuit;

Among them, the DC power supply adopts 5V voltage, the positive pole is connected to the positive pole of the circuit, and the negative pole of the power supply is in phase with the circuit ground GND.

The model of the control unit is: control chip, use the analog I/O interface A0, A1, A2, A3, A4 of the control chip R3 as the pressure information input interface, the digital I/O interface D4 as the device switch information input interface, and the digital I/O Interfaces D0/RX, D1/TX are used as pressure data transmission interfaces, digital I/O interfaces D2, D3, D6, D7, D8, D9, D11, D12 are used as pressure feedback information output interfaces.

The composition of the information input circuit includes: one-way tilt sensor, yellow LED1 and corresponding resistor R6, a buzzer and corresponding resistor R7; digital I/O interface D4 reads the level data of one-way tilt sensor Tilt Sensor, digital I/O Interface D2 is used to control the yellow LED1, and digital I/O interface D3 is used to control the buzzer; when the one-way tilt sensor Tilt Sensor is placed horizontally, the device starts to work, the yellow LED1 lights up, and the buzzer emits music 1, visually The two sensory channels of sensory and hearing are in working state; otherwise, the yellow LED1 is off, the buzzer does not make a sound, and the prompting device is not in working state; when the analog I/O interface A0, A1, A2, A3, A4 reads the pressure When the data of sensors FSR1, FSR2, FSR3, FSR4, and FSR5 exceed the detection range of the pressure sensor, the buzzer will emit music 2, indicating that the device is in an invalid working state, and then delay for 3 seconds, and the buzzer will emit music 3, prompting the user to perform finger pressure again detection.

The finger pressure detection circuit is composed of five pressure sensors FSR1, FSR2, FSR3, FSR4, FSR5 and five corresponding resistors R1, R2, R3, R4, R5, respectively connected to the analog I/O interface A0, A1, A2, A3 , A4 to read the pressure data of different fingers; resistors R1, R2, R3, R4, R5 respectively play a role in limiting the current of the pressure sensors FSR1, FSR2, FSR3, FSR4, FSR5.

Finger pressure feedback circuit: consists of five bar-shaped LED column modules (LED column 1, LED column 2, LED column 3, LED column 4, LED column 5), an LCD and a rotary potentiometer R8; Or when pressing the pressure sensors FSR1, FSR2, FSR3, FSR4, FSR5 at the same time, the LCD display device detects the pressure data of different fingers, and the bar-shaped LED column module corresponding to each pressure sensor (LED column 1, LED column 2, LED columns 3, LED columns 4, and LED columns 5) realize lighting or extinguishing the onboard LEDs of the LED column module according to the pressing pressure of the user; All the 6 LEDs on the board light up; the less pressure the user presses with the finger, the less the number of LEDs on the LED column module will light up until all the 6 LEDs on the board turn off. The rotary potentiometer R8 is used to adjust the brightness of the LCD backlight.

Finger pressure data transmission circuit: It is composed of a WiFi module with ESP8266 as the core, connected to the TX and RX ports of the WiFi module through the digital I/O interfaces D0/RX and D1/TX of the control unit, the positive pole is connected to the VCC port, and GND is connected to the GND transmits the data detected by the pressure sensors FSR1, FSR2, FSR3, FSR4, and FSR5 to the PC or smart phone remotely, and stores the data for subsequent application and research.

The specific implementation plan, the detailed steps are as follows:

As shown in Figure 1: Connect the pressure sensors FSR1, FSR2, FSR3, FSR4, and FSR5 to the analog I/O interfaces A0, A1, A2, A3, and A4 respectively, connect the 5V DC power supply to the positive pole of the control unit, and connect the GND to the negative pole. Resistors R1, R2, R3, R4, and R5 are respectively connected to the GND of the control unit; the signal interfaces (S) of the LED column modules (LED column 1, LED column 2, LED column 3, LED column 4, and LED column 5) are respectively connected to the analog I/O interface A0, A1, A2, A3, A4, the positive pole is connected to the positive pole, and the negative pole is connected to GND; connect the TX interface of the WiFi module to the digital I/O interface D0/RX, and connect the RX interface to the digital I/O interface D1/TX, connect the VCC interface to the positive pole, GND to GND; connect the yellow LED1 to the digital I/O interface D2, and connect to the resistor R6, and connect the other side of the resistor R6 to GND; connect the buzzer to I /O interface D3, and connected to resistor R7, the other side of resistor R7 is connected to GND; connect the signal interface (S) of the one-way tilt sensor Tilt Sensor to digital I/O interface D4, connect the positive pole to the positive pole, and the negative pole to To GND; connect the rotary potentiometer R8 signal port (S) to the V0 port of the LCD, connect the positive pole to the positive pole, and connect the negative pole to GND; connect the VSS port of the LCD to GND, connect the VDD port to the positive pole, and connect V0 to the rotary potential R8 signal port (S), RS port connected to digital I/O port D11, RW port connected to GND, EN port connected to digital I/O port D12, LCD port D4 connected to control unit digital I/O port D9 , the D5 port of the LCD is connected to the digital I/O interface D8 of the control unit, the D6 port of the LCD is connected to the digital I/O interface D7 of the control unit, the D7 port of the LCD is connected to the digital I/O interface D6 of the control unit, and the A port is connected to the resistor R9 is connected to the positive pole, and the K port is connected to GND;

Note 1: The main advantage of this utility model is that it can be networked and can detect the pressure of different fingers separately or simultaneously, becoming an independent finger pressure detection and feedback device, which aims to inform the user of the pressure data of different fingers and perform remote data transmission and storage, providing an experimental basis for follow-up research.

The networkable finger pressure detection device in the utility model can adapt to two device modes:

Normal working mode; the yellow LED1 lights up, and the buzzer emits music 1 to remind the user that the device is in the normal working mode, and the working process is shown in Figure 3.

Invalid detection mode; the yellow LED1 lights up, the buzzer emits music 2, and after a delay of 3 seconds, the buzzer emits music 3 to prompt the user to re-detect. The workflow is shown in Figure 4.

In normal working mode, the following two types of usage can be given:

Different fingers perform finger pressure detection respectively, and the workflow is shown in Figure 5;

Different fingers perform finger pressure detection at the same time, and the workflow is shown in Figure 6.

Note 2: This utility model needs to use the control chip main board, one-way inclination sensor, pressure sensor, strip LED column, resistor, buzzer, LCD, LED, WiFi module, and the resistance to pressure sensor, buzzer, LED, LCD Act as a current limiter.

The utility model designs four functional circuits: an information input circuit, a finger pressure detection circuit, a finger pressure feedback circuit, and a finger pressure data transmission circuit; a one-way inclination sensor is used to make the device enter the working state, and LED, buzzer and resistance are used to prompt the use or the device is in working condition; use five pressure sensors and five resistors to obtain the pressure data of five fingers, and use the buzzer to prompt the invalid detection mode of the device; use five bar-shaped LED columns to control the five pressure sensors Feedback of the detection information, the greater the pressure, the more LEDs on the LED column are lit, until all 6 LEDs on the board are lit; use the LCD, rotary potentiometer and resistor to display the data of the five pressure sensors in real time; Use the WiFi module with ESP8266 as the core to remotely transmit the pressure sensor data to the PC or smart phone in real time and store them.

The technical solution of the networkable finger pressure detection device of the present invention includes any combination of the above-mentioned features.

The utility model adopts simple data calculation, and remotely connects the PC terminal or smart phone terminal equipment through WiFi to store pressure data; wherein, the serial port monitor is used to observe the reading data of the one-way inclination sensor and the reading data of the pressure sensor during the development process of the utility model. data, but is not required in the actual product.

The products protected by this scheme have been put into actual production and application, especially the application in the field of pressure detection technology has achieved certain success, which obviously proves that the technical scheme of this product is beneficial, meets social needs, and is suitable for Mass production and promotion.

The above content is a detailed description of the utility model in conjunction with specific embodiments, and it cannot be determined that the specific implementation of the utility model is limited to these descriptions. For those skilled in the technical field to which the utility model belongs, on the premise of not departing from the concept of the utility model, some simple deduction or replacement can also be made, which should be regarded as belonging to the scope of protection of the utility model.

Claims (7)

1. A networkable finger pressure detection device, characterized in that: comprising: a DC power supply, a control unit, an information input circuit, a finger pressure detection circuit, a finger pressure feedback circuit, a finger pressure data transmission circuit; the information input circuit The composition includes: a unidirectional inclination sensor, a yellow LED1 and a corresponding resistor R6, a buzzer and a corresponding resistor R7; the composition of the finger pressure detection circuit includes: five pressure sensors FSR1, FSR2, FSR3, FSR4, FSR5 and five Corresponding resistors R1, R2, R3, R4, R5; the composition of the finger pressure feedback circuit includes: five bar-shaped LED column modules, respectively LED column 1, LED column 2, LED column 3, LED column 4, LED column Column 5, an LCD and a rotary potentiometer R8; the composition of the finger pressure data transmission circuit includes: a WiFi module with ESP8266 as the core; the positive pole of the DC power supply is connected to the positive pole of the circuit, and the negative pole of the DC power supply is connected to the circuit ground GND is connected, and the R1, R2, R3, R4, R5, R6, R7 are all connected to the negative pole. 2. a kind of networkable finger pressure detection device according to claim 1, is characterized in that: the control unit model is the control chip of Arduino UNO, is provided with digital I/O interface and analog I/O interface, described The analog I/O interface includes A0, A1, A2, A3, A4 and A5, and the digital I/O interface includes D0/RX, D1/TX, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12 and D13. 3. A networkable finger pressure detection device according to claim 2, characterized in that: the analog I/O interface A0 is used to read the data of the pressure sensor FSR1, and controls the LED column 1 to light the onboard LED, and the analog The I/O interface A1 is used to read the data of the pressure sensor FSR2 and control the LED column 2 to light up the onboard LED. The analog I/O interface A2 is used to read the data of the pressure sensor FSR3 and control the LED column 3 to light up the onboard LED , the analog I/O interface A3 is used to read the data of the pressure sensor FSR4, control the LED column 4 to light the onboard LED, and the analog I/O interface A4 is used to read the data of the pressure sensor FSR5, and control the LED column 5 points Brighten the onboard LED. 4. A networkable finger pressure detection device according to claim 3, characterized in that: the digital I/O interface D0/RX is connected to the TX port of the WiFi module, and the digital I/O interface D1/TX is connected to the WiFi Module RX port, the digital I/O interface D2 is connected to a yellow LED1, which represents the normal working mode of the networkable finger pressure detection device; the digital I/O interface D3 is connected to a buzzer to control the buzzer to emit different sounds Respectively prompt the working mode and invalid detection mode of the networkable finger pressure detection device; the digital I/O interface D4 is connected to a one-way inclination sensor, and reads the level state of the one-way inclination sensor to detect the networkable finger pressure Whether the detection device is in working mode; the digital I/O interface D6 is connected to the D7 port of the LCD, the digital I/O interface D7 is connected to the D6 port of the LCD, and the digital I/O interface D8 is connected to the D5 port of the LCD, so The above-mentioned digital I/O interface D9 is connected to the D4 port of the LCD for controlling the display of pressure sensor data. 5. A kind of networkable finger pressure detection device according to claim 4, characterized in that: the signal port (S) of the one-way inclination sensor is connected to the digital I/O interface D4, and the yellow LED1 and the buzzer are respectively connected to the digital I/O interface D2 and digital I/O interface D3, when the one-way inclination sensor is placed horizontally, the device starts to work, the yellow LED1 lights up, and the buzzer emits music 1 to remind the user that the device is in working condition; otherwise, the yellow LED1 LED1 goes out, the buzzer does not make a sound, indicating that the device is not working. 6. A networkable finger pressure detection device according to claim 5, characterized in that: the VSS port of the LCD is connected to GND, the VDD port is connected to the positive pole, and V0 is connected to the rotary potentiometer R8 signal port (S) , the RS port is connected to the digital I/O interface D11, the RW port is connected to GND, the EN port is connected to the digital I/O interface D12, the D4 port of the LCD is connected to the digital I/O interface D9 of the control unit, and the D5 port of the LCD is connected to The digital I/O interface D8 of the control unit, the D6 port of the LCD is connected to the digital I/O interface D7 of the control unit, the D7 port of the LCD is connected to the digital I/O interface D6 of the control unit, the A port is connected to the positive pole after connecting the resistor R9, K Connect the terminal to GND, adjust the rotary potentiometer R8 to control the brightness of the LCD backlight. 7. A kind of networkable finger pressure detection device according to claim 6, characterized in that: the WiFi module TX port with ESP8266 as the core is connected to the control unit digital I/O interface D0/RX, and the RX port is connected to the control unit digital I The /O interface D1/TX, the VCC port is connected to the positive pole of the control unit, and the GND is connected to the GND of the control unit to transmit the data of the pressure sensors FSR1, FSR2, FSR3, FSR4, and FSR5 from the device to the PC or smart phone in real time.