Structure Analysis and Decoupling Research of a Novel Flexible Tactile Sensor Array

Wang, Feilu; Yang, Suk Woo; Zhang, Zhenya; Wanli, Chen

doi:10.1155/2015/476403

Cited by 4 publications

(3 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A high-resolution tactile sensor was designed for Flex e-Skin, but the required size was a trade-off [33]. Many tactile array sensors were developed for touch sensing and Flex e-Skin [32][33][34][35][36][37][38][39][40][41][42][43][44], while the resolution was compromised. Hence, they were not suitable for developing tactile sensor arrays for high accuracy image recognition capability.…”

Section: Tactile Sensor Arraymentioning

confidence: 99%

Tactile Object Recognition for Humanoid Robots Using New Designed Piezoresistive Tactile Sensor and DCNN

Pohtongkam

Srinonchat

2021

Sensors

View full text Add to dashboard Cite

A tactile sensor array is a crucial component for applying physical sensors to a humanoid robot. This work focused on developing a palm-size tactile sensor array (56.0 mm × 56.0 mm) to apply object recognition for the humanoid robot hand. This sensor was based on a PCB technology operating with the piezoresistive principle. A conductive polymer composites sheet was used as a sensing element and the matrix array of this sensor was 16 × 16 pixels. The sensitivity of this sensor was evaluated and the sensor was installed on the robot hand. The tactile images, with resolution enhancement using bicubic interpolation obtained from 20 classes, were used to train and test 19 different DCNNs. InceptionResNetV2 provided superior performance with 91.82% accuracy. However, using the multimodal learning method that included InceptionResNetV2 and XceptionNet, the highest recognition rate of 92.73% was achieved. Moreover, this recognition rate improved when the object exploration was applied to demonstrate.

show abstract

Section: Tactile Sensor Arraymentioning

confidence: 99%

Tactile Object Recognition for Humanoid Robots Using New Designed Piezoresistive Tactile Sensor and DCNN

Pohtongkam

Srinonchat

2021

Sensors

View full text Add to dashboard Cite

show abstract

“…To solve the error problem, a series of algorithms have emerged. Through the improved BPNN algorithm, the force applied to the tactile sensor is decoupled from the resistance information, and direct interference between the electrodes of the sensor array is avoided (Wang et al, 2015). A different DOA estimation method for sensor array error calibration is proposed (Liu et al, 2017a(Liu et al, , 2017b, which has an excellent effect on the poor signal-to-noise ratio.…”

Section: Introductionmentioning

confidence: 99%

A flexible pressure sensor with interference immunity capability

Liu

Wang

et al. 2023

View full text Add to dashboard Cite

Purpose Flexible pressure sensor arrays have promising applications in analog haptics, reconfiguration of sensory functions, artificial intelligence, wearable devices and human-computer interaction. The force disturbance generated by the connecting material between the sensor array units will reduce the detection accuracy of the unit. The purpose of this paper is to propose a flexible pressure sensor with interference immunity capability. A C-type bridge flexible piezoelectric structure is used to improve the pressure perturbation. The interference immunity capability of the sensor has been improved. Design/methodology/approach In this paper, a C-type pressure sensor array structure by rapid injection moulding is manufactured through the positive piezoelectric effect of a piezoelectric material. The feasibility of C-type interference immunity structure in a flexible sensor array is verified by further analysis and experiment. A flexible pressure sensor array with C-type interference immunity structure has been proposed. Findings In this paper, we present the results of the perturbation experiment results of the C-type pressure sensor array, showing that the perturbation error is less than 8%. The test of the flexible sensor array show that the sensor can identify the curved angle of up to 120 °, and the output sensitivity of the sensor in the horizontal state reaches 0.12 V/N, and the sensor can withstand the pressure of 80 N. The flexible sensor can work stably in the stretch rate range of 0–8.6% and the stretch length range of 0–6 mm. Originality/value In this paper, C-type pressure sensor array structure is fabricated by rapid injection moulding for the first time. The research in this paper can effectively reduce the disturbance of input pressure on the sensor’s internal array and improve the output accuracy. The sensor can intuitively reflect the number of fingers sliding on the sensor by the order in which the maximum voltage appears. Due to the strong interference immunity capability and flexibility of the flexible sensor array mechanism, it has a broad application prospect in the practical fields of haptic simulation, perceptual function reconstruction, artificial intelligence, wearable devices and human–computer interaction.

show abstract

“…With the development of sensor technologies, sensors have been improved with smaller size, lower power consumption, and better anti-interference ability, which makes it possible to embed many sensors within a certain local space. Multisensor information fusion pursues process redundant or complementary information from the multiple sources provided by the sensors to achieve results that are not feasible from a single sensor [1,2]. The monitor and alarm system (MAS) based on multisensor information fusion technologies has been widely used in many fields, such as the disease diagnosis [3,4], the image fusion [1,5], the environment monitoring [6], and the security surveillance.…”

Section: Introductionmentioning

confidence: 99%

A Method for Selecting Optimal Number of Sensors to Improve the Credibility

Chen¹,

Yu²,

et al. 2016

Journal of Sensors

View full text Add to dashboard Cite

With the development of sensors, it is possible to embed many sensors within a certain space, which makes the monitor and alarm system with multisensor possible. There are two important parameters in a monitor and alarm system, namely, the false alarm rate and the missed alarm rate. In this work, a method for selecting optimal number of sensors in the sensor array is presented to improve the credibility. The influence factors of the weights and the false alarm rate and the missed alarm rate of one sensor and total number of sensors are discussed. An experimental setup was developed. The monitoring methods of common strategies and the proposed optimal number of sensors strategy are compared graphically by the receiver operating characteristic curves and the area under receiver operating characteristic curve values. The receiver operating characteristic curves graphically prove that the optimal number of sensors’ method presents the best performance, and it is shown that the optimal number of sensors’ method has the highest area under receiver operating characteristic value (0.9631). This method may aid future users of the monitor and alarm system by providing an optimal number of sensors strategy for high credibility.

show abstract

Structure Analysis and Decoupling Research of a Novel Flexible Tactile Sensor Array

Cited by 4 publications

References 19 publications

Tactile Object Recognition for Humanoid Robots Using New Designed Piezoresistive Tactile Sensor and DCNN

Tactile Object Recognition for Humanoid Robots Using New Designed Piezoresistive Tactile Sensor and DCNN

A flexible pressure sensor with interference immunity capability

A Method for Selecting Optimal Number of Sensors to Improve the Credibility

Contact Info

Product

Resources

About