Control circuit for acquiring hand action pressure data in interaction process

Abstract

The utility model provides a control circuit for acquiring hand action pressure data in an interaction process, and belongs to the technical field of psychological data acquisition. Comprising an MCU module and a pressure sensor array module. The pressure sensor array module comprises a plurality of pressure sensors which are distributed in a rectangular array; the pressure sensors in each row of the pressure sensor array module are provided with multiplexing switches in a matched mode, and the pressure sensors in each row are electrically connected with switch ports of the corresponding multiplexing switches according to the position sequence. The common input and output ports of the multiplexing switch are electrically connected with the analog input port of the MCU module, and the controlled ports of the multiplexing switch are electrically connected with the control port of the MCU module. According to the utility model, multi-point pressure data measurement is supported; according to the utility model, a plurality of multiplexing switches are used to conduct different pressure sensors for pressure data acquisition, so that the system is suitable for an MCU with fewer ADC ports.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of psychology data collection, specifically related to a control circuit that gathers hand action pressure data in the interactive process. BACKGROUND

[0002] The action mode and force intensity of human hand are significantly related to the individual's psychological state, and psychological research shows that by quantitatively analyzing the pressure distribution characteristics generated in the hand interaction process, the emotional state, personality tendency and other psychological dimension parameters of the subject can be effectively evaluated, which provides a new technical path for psychological experimental research and emotional computing of intelligent interaction equipment.

[0003] Therefore, in order to evaluate the psychological state of human body in the interactive process, or when carrying out related psychological experiments, it is necessary to collect the force of hand action of human body during interaction. UTILITY MODEL CONTENT

[0004] The utility model provides a control circuit that gathers hand action pressure data in the interactive process for the technical problem of gathering human hand action force, and gathers the pressure data applied by human hand action through the array distribution of pressure sensor.

[0005] The utility model adopts the technical scheme of:

[0006] A control circuit that gathers hand action pressure data in the interactive process, comprising an MCU module and a pressure sensor array module; the pressure sensor array module comprises a plurality of pressure sensors in a rectangular array distribution;

[0007] Each row of the pressure sensor array module is provided with a plurality of multiplexing switches, and each row of the pressure sensor is electrically connected to the switch port of the corresponding multiplexing switch in sequence;

[0008] The common input and output port of the multiplexing switch is electrically connected to the analog input port of the MCU module, and the controlled port of the multiplexing switch is electrically connected to the control port of the MCU module.

[0009] Further, the pressure sensor is a thin film pressure sensor, and is arranged in the same FPC flexible circuit board.

[0010] Further, the pressure sensor in the pressure sensor array module is distributed according to 3-8 rows and 3-16 columns.

[0011] Further, the common input and output port of the multiplexing switch is electrically connected to the same analog input port of the MCU module.

[0012] Further, the communication module, the steering engine and the storage module are all electrically connected with the MCU module.

[0013] Further, the inertial navigation module is electrically connected with the MCU module.

[0014] Further, the multiplexing switch has 16 switch ports.

[0015] Further, the communication module comprises a Bluetooth serial communication module.

[0016] Further, the storage module comprises a memory card.

[0017] Further, the MCU module is further electrically connected with a button and an indicator light.

[0018] Compared with the prior art, the utility model has the beneficial effects as follows:

[0019] The utility model discloses a pressure sensor array is used to gather the pressure data when human hand action, can support the pressure data measurement of multipoint, and the pressure data gathered will be more detailed. For the limited condition of the number of MCU analog input port (ADC port), the utility model groups the sensor in pressure sensor array, and allocates a multiplexing switch for each group pressure sensor, and all multiplexing switches are connected on the available ADC port of MCU module or even the same ADC port, and the pressure data collection is completed through switching multiplexing switch and conducting different pressure sensors in turn. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model will be further explained in detail in combination with the drawings.

[0021] Figure 1 The schematic diagram of the utility model embodiment 1 is shown in the figure.

[0022] Figure 2 The schematic diagram of the utility model embodiment 2 and embodiment 3 is shown in the figure.

[0023] Wherein: 1-MCU module, 2-pressure sensor array module, 21-pressure sensor, 22-multiplexing switch, 3-power module, 4-communication module, 5-steering engine, 6-storage module, 7-inertial navigation module. DETAILED DESCRIPTION

[0024] For better understanding of the present application, the content of the present application will be further clearly described below in combination with examples and drawings, but the protection content of the present application is not limited to the following examples. In the following description, a large number of specific details are given in order to provide a more complete understanding of the present application. However, it is obvious for those skilled in the art that the present application can be implemented without one or more of these details.

[0025] Embodiment 1: refer to Figure 1 The purpose of the present embodiment is to provide a control circuit for collecting hand action pressure data in an interactive process, which comprises an MCU module 1, a pressure sensor array module 2 and a power module 3.

[0026] The power module 3 is used for providing electric energy, comprising a lithium ion battery and a charging interface.

[0027] The pressure sensor array module 2 comprises a plurality of pressure sensors 21 distributed in a rectangular array, and all the pressure sensors 21 are divided into 3-8 rows and 3-16 columns. Assuming that the number of pressure sensors 21 is n, then n=a×b, wherein a is the number of rows, b is the number of columns, a∈{3, 4, 5, …, 8}, b∈{3, 4, 5, …, 16}. The pressure sensors 21 are all thin film pressure sensors, and the pressure sensors 21 in the pressure sensor array module 2 are all arranged in the same FPC flexible circuit board.

[0028] The pressure sensor 21 outputs an analog signal in linear relationship with the pressure value, and the ADC port (analog input port) of the MCU module 1 can collect the output signal of the pressure sensor 21. In order to enable the limited ADC port of the MCU module 1 to collect the pressure data of a plurality of pressure sensors 21, one multiplexing switch 22 is arranged for each row of pressure sensors 21, and the pressure sensors 21 in each row of pressure sensors 21 are electrically connected to one IO port (switch port) of the multiplexing switch 22 in sequence according to the position, and the number of IO ports of the multiplexing switch 22 is not less than b. The common input and output port of the a multiplexing switches 22 is electrically connected to the available ADC port of the MCU module 1, or even is electrically connected to the same ADC port, and the controlled port of the multiplexing switch 22 is electrically connected to the control port (such as GPIO port) of the MCU module 1.

[0029] Therefore, the MCU module 1 can sequentially connect the pressure sensors 21 to collect pressure data. Specifically, taking the multiplexing switch 22 electrically connected to a certain ADC port of the MCU module 1 as an example, the MCU module 1 first makes all IO ports of all multiplexing switches 22 connected to the ADC port turn off, then turns on an IO port in the multiplexing switch 22, connects the corresponding pressure sensor 21, and enables the ADC to collect the electrical signal of the pressure sensor 21; after the collection is completed, the current IO port is turned off, and the next IO port is turned on for collection. When multiple ADC ports are used, the above operation can be performed in parallel, and when only one ADC port is used, the above operation can also be performed. When the hand touches the pressure sensor array module 2, the MCU module 1 can collect the pressure value of the pressure sensor 21 in the above manner.

[0030] Preferably, the multiplexing switch 22 is of the model CD74HCx4067, has 16 IO ports, and the turn-on or turn-off speed of the IO ports is less than 500 ns.

[0031] Preferably, the MCU module 1 includes an MCU chip of the model STM32F103VET6.

[0032] Preferably, the pressure sensor array module 2 is provided with 5 rows and 16 columns (a total of 80) of pressure sensors 21.

[0033] The control circuit provided in Embodiment 1 can be applied to a psychological experiment handgrip. The pressure sensor array module 2 is arranged on the surface of the handgrip, and the MCU module 1 can collect the grip data of the individual when using the handgrip by using the pressure sensor array module 2. The experimental data can be applied to the “prosocial measurement experiment based on effort” (the experiment can refer to Lockwood P L, Abdurahman A, Gabay A S, et al. Aging increases prosocial motivation for effort [J]. Psychological Science, 2021, 32(5): 668-681.).

[0034] Embodiment 2: refer to Figure 2 Compared with Embodiment 1, the control circuit for collecting pressure data of hand actions in interaction provided in the present embodiment mainly has the following improvements: further including a communication module 4, a steering engine 5 and a storage module 6, which are all electrically connected to the MCU module 1, and the communication module 4, the steering engine 5 and the storage module 6 are powered by the power module 3.

[0035] MCU module 1 stores the pressure data collected by pressure sensor array module 2 in storage module 6 through SPI protocol. Preferably, storage module 6 includes a memory card.

[0036] When MCU module 1 detects the pressure data by pressure sensor array module 2, different actions are made by PWM signal driving servo 5 according to different pressure data, providing feedback for the user. Preferably, the number of servo 5 is not limited, and the model is SXC10.

[0037] Communication module 4 is used for communication with external devices, and the collected pressure data or the pressure data stored in storage module 6 is transmitted to external devices. Preferably, communication module 4 includes a HC05 Bluetooth serial communication module.

[0038] Further, MCU module 1 is also electrically connected with buttons and indicator lights through GPIO ports.

[0039] Embodiment 3: refer to Figure 2 The control circuit provided by the embodiment for collecting pressure data of hand actions in the interaction process mainly makes the following improvements compared with embodiment 2: it also includes an inertial navigation module 7 electrically connected with MCU module 1, and the inertial navigation module 7 is powered by power module 3. MCU module 1 collects three-axis tilt angle information of the target, i.e. roll angle, pitch angle and yaw angle information, through serial communication protocol by using inertial navigation module 7.

[0040] The control circuit provided by embodiment 3 can be applied to a pet robot for collecting human hand actions. The pressure sensor array module 2 is arranged on the back of the robot, the human hand interacts with the back of the robot, MCU module 1 collects the action, pressure and other conditions when the hand interacts by using pressure sensor array module 2, collects the posture change of the robot when the hand interacts by using inertial navigation module 7, and makes action feedback by using servo 5. MCU module 1 stores or sends the collected data to external devices, so that researchers can use these data to analyze the psychological health (joy, depression, stress, etc.) state of individuals.

[0041] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application, not to limit it. Other modifications or equivalent replacements to the technical solutions of the present application made by those skilled in the art should be covered in the scope of the claims of the present application, as long as they do not deviate from the spirit and scope of the technical solutions of the present application.

Claims

1. A control circuit for collecting hand motion pressure data during interaction, characterized in that, It includes an MCU module and a pressure sensor array module; the pressure sensor array module includes multiple pressure sensors arranged in a rectangular array. The pressure sensors in the pressure sensor array module are arranged in 3-8 rows and 3-16 columns; each row of the pressure sensor array module is equipped with a multiplexer switch, and the pressure sensors in each row are electrically connected to the switch ports of the corresponding multiplexer switches in order of their positions. The common input and output ports of the multiplexer are electrically connected to the analog input port of the MCU module, and the controlled ports of the multiplexer are electrically connected to the control ports of the MCU module. All pressure sensors are thin-film pressure sensors and are all housed in the same FPC flexible circuit board.

2. The control circuit for acquiring hand motion pressure data during the interactive process according to claim 1, characterized in that, The common input and output ports of the multiplexer are all electrically connected to the same analog input port of the MCU module.

3. The control circuit for acquiring hand motion pressure data during the interactive process according to claim 1, characterized in that, It also includes a communication module, a servo motor, and a storage module, all of which are electrically connected to the MCU module.

4. The control circuit for acquiring hand motion pressure data during the interactive process according to claim 3, characterized in that, It also includes an inertial navigation module that is electrically connected to the MCU module.

5. The control circuit for acquiring hand motion pressure data during the interactive process according to claim 1, characterized in that, The multiplexer has 16 switch ports.

6. The control circuit for acquiring hand motion pressure data during the interactive process according to claim 3, characterized in that, The communication module includes a Bluetooth serial communication module.

7. The control circuit for acquiring hand motion pressure data during the interactive process according to claim 3, characterized in that, The storage module includes a memory card.

8. The control circuit for acquiring hand motion pressure data during the interactive process according to claim 1, characterized in that, The MCU module is also electrically connected to buttons and indicator lights.

Images