paired key press capacitive touch sensor keys

... establish pairwise keys They authenticate themselves using a predeployed key which is erased as soon as pairwise keys are established To establish cluster keys and the group key, nodes use broadcasts ... that two nodes share a key, say p3 Depends on d and p3 Good k keys + keys identifiers d+1 Probability that two nodes share a key, say p4 Depends on k and p4 Good (3 ∗ d) + + keys chain of μTESLA ... in the shared -key discovery phase Their scheme called Q-composite requires q common keys to establish a link key Link between a pair of sensor nodes is set as a hash of all common keys The scheme...

Ngày tải lên: 21/06/2014, 11:20

... Furthermore, pairwise keys are also totally decentralized Therefore, the compromise of some sensor nodes will not affect any other noncompromised pairwise keys For the establishment of keys for new nodes ... pairwise keys and the local cluster keys of noncompromised nodes Note that the neighboring nodes not have to acknowledge the setup of the pairwise keys because the measures taken later in the key ... and the local cluster keys, in the LEAP protocol, each node still needs to store its own individual key that is used for computing the M pairwise keys and at most M initial keys: KIN , KIN , ...

Ngày tải lên: 21/06/2014, 11:20

... keys with V, the common derived keys shared between them must be no more than i ∗ M Proof Each root key can authenticate at most M initial keys, since the common derived keys must come from key ... groups which root keys are shared between U and V, if U and V share i root keys and the common auxiliary node picks all the i ∗ M initial keys of the total i key groups, these keys will be authenticated ... of preloaded root keys M=4 M=8 M = 16 Figure 4: The number of preloaded initial keys versus the number of preloaded root keys varying with different size of key group initial keys preloaded in...

Ngày tải lên: 21/06/2014, 17:20

... if it has a common key ID with both end sensor nodes N1 and N2 For a probability of sharing one key space of 30%, each sensor node carries 20 keys from a key pool of 1000 keys Therefore, each ... each sensor node has a unique node identifier in the network (node ID); (b) each sensor node stores a list of keys or the information necessary to set up a secure link (DDHV scheme) (2) After sensor ... searching process When the probability of sharing a secret is 30%, each sensor node carries 20 keys randomly from a key pool of 1000 The key ID identifiers require 10 bits to represent them in a binary...

Ngày tải lên: 21/06/2014, 22:20

... Before the deployment of any sensor node, m sets of keys are selected from a large key pool The m keys form a key chain which will be sent to each sensor node One key is selected between the nodes, ... based on the new generated key and one of the old keys These two keys become the key for this transmission Other sensor nodes make use of the same method When the sensor node transmits data to ... pertaining to the key Furthermore, each node includes the records of not more than three keys, two old keys and one newly generated key When the new key is generated, the oldest key will be updated...

Ngày tải lên: 21/06/2014, 23:20

... shared keys between sensors in WSNs In the first strategy, all sensor nodes share the same session key, while in the second case each sensor node shares a unique key with each of the remaining n − sensors, ... choice but to use symmetric -key cryptographic systems In symmetric -key cryptographic systems, keys have to be installed onto sensors before deployment Nodes then use shared keys to conduct secure ... and key revocation in existing nodes are not easy for this network In [10] a seed-based key deployment strategy to discover shared keys, in a more energy-efficient manner, is described All the keys...

Ngày tải lên: 22/06/2014, 22:20

... Differential capacitive acceleration sensors with: double beamsand (b) four symmetrical beams 60 Figure 3.19 Calibration set-up consisting of the rotating disk, circuits and the capacitive acceleration sensor ... frequency 58 List of Figures Figure 1.1 A compression type piezoelectric accelerometer arrangement Figure 1.2: Piezoresistive acceleration sensor Figure 1.3 Capacitive measurement of acceleration Figure ... 14 14 15 3.4 Simulation Result 3.4.1 Single Capacitive Accelerometer 3.4.2 Differential Capacitive Accelerometer with a Single Beam 3.4.3 Differential Capacitive Accelerometer with Two Symmetric...

Ngày tải lên: 25/03/2015, 11:44

... reserved Touch Channel vs Key vs PCB Electrode  touch channel does not necessarily mean key Touch Controller Matrix Configuration Ch0 Ch1 Ch2 Ch3 Ch4 Ch5 Ch6 Ch7 Key1 Key2 Key3 Key4 Key5 Key6 Key7 ... Applications Application Touch Functions System Functions • Security Keypad • LEDs, buzzer, communication • Blood Pressure monitor • keys • Buzzer, communication • Printer • 16 keys • LEDs, buzzer, ... Inc All rights reserved Touch Sensor IC Analog Analog 3 Why Use Capacitive Touch Interfaces  Audience:  Can you name some interfaces that would benefit from capacitive touch interfaces?  Why?...

Ngày tải lên: 22/06/2015, 14:04

... micro pressure sensors 1.3.1 Micro piezoresistive pressure sensor 1.3.2 Micro capacitive pressure sensor 1.3.3 Micro resonant pressure sensor ... micro piezoresistive pressure sensor 1.4 (a) cross section and (b) top view of micro capacitive pressure sensor 10 1.5 Cross section view of micro resonant pressure sensor 11 1.6 ... required to be operated in touch mode for good linearity Figure 1.7 shows one of the pressure sensors in biomedical applications The capacitive pressure sensor comprises a pressure dependent capacitance...

Ngày tải lên: 11/09/2015, 21:53

... for the PICDEM Touch Sense Demo Board © 2009 Microchip Technology Inc AN1250 Paired Keys Press Matrix Keys Implementation The paired keys press is similar to the multiple key press with the ... two single keys being pressed and a single paired press key Matrix keys use a set of capacitive touch sensors arranged in rows and columns to provide a maximum number of buttons or keys with respect ... each of the actual keys, capacitive coupling also increases the amount of capacitance seen by each of the sensor inputs FIGURE 5: PAIRED KEY PRESS CAPACITIVE TOUCH SENSOR KEYS CTMU Channel: It...

Ngày tải lên: 11/01/2016, 17:03

... at unpressed speed else Average at pressed speed © 2009 Microchip Technology Inc PRESSED AVERAGE if ( Raw < Pressed Avg OR (Raw < Unpressed Threshold AND Prev Raw Unpressed Threshold) ) Pressed ... PRESSES Button press simulation is managed in two sections The ‘Button Press %’ field determines the sensitivity, or deviation, of the press The larger the number value, the more “firm” the press ... EXAMPLE 7: EXAMPLE 3: UNPRESSED AVERAGE DETECTION DECISION if ( Debounce shows pressed ) if ( Raw < Unpressed Threshold ) Button is pressed else Button is released else if ( Raw > Pressed Threshold...

Ngày tải lên: 11/01/2016, 17:03

... pop-up bar of keyboard choices You can choose from a standard keyboard, a split keyboard, a drawing palette, or an extended keyboard that includes the Windows key, Alt keys, and Ctrl keys Split ... extended keyboard along the bottom half of your touch device screen The split keyboard groups the keys along the outer edges of the touch device, which is perfect if you’re working with the touch ... automatically 4  What’s new in Office 2013 for touch devices? Extended keyboard Hide keyboard Change the size of displayed keys Drawing Standard panel keyboard 1: About this book Big new features...

Ngày tải lên: 07/04/2014, 15:07

... our method a node that has lost some keys gets a probabilistic opportunity (that diminishes with the number of lost keys) to recover the missing keys from the key chain, and the rate at which this ... ki+1 | m into extracted key and m (9) hash extracted key m + times and store in trial key (10) if trial key matches current key (11) replace current key with extracted key (12) else discard packet ... all sensor nodes Each sensor node also holds a public/private key pair, and the base-station knows the public key of each sensor node that is to receive the broadcast data Note that the public keys...

Ngày tải lên: 21/06/2014, 11:20

... public key of all gateways (including its own) {PG j | ≤ r j ≤ G}, its private key PG j , and the public keys of all sensor u | ≤ i ≤ N } in the network These keys are nodes {Pni embedded in the sensor ... the sensor nodes in its cluster along with their IDs and public keys At this point, the public keys of sensor nodes and gateways are authenticated Now, each gateway G j will ask its one-hop sensor ... each gateway Sensor node ni , i ∈ {1, , N } Area covered by each sensor node Gateway G j , j ∈ {1, , G} Symmetric key between sensor node ni and ni Public and private key of sensor node...

Ngày tải lên: 21/06/2014, 11:20

... Networking Key establishment Predistribution (deterministic approach) Single master key All pairwise keys Random keys In-Situ Predistribution (probabilistic approach) Random pairwise keys Under ... stored PRFs to generate key spaces containing random keys Then the service sensor securely deliver a set of pairwise keys to each associated worker sensor, as long as the worker sensor conveys the ... pseudo-random key generator seeded by the node id Each sensor computes the key identifiers and preloads the corresponding keys based on its unique id Two sensors can determine whether they have a common key...

Ngày tải lên: 21/06/2014, 20:20

... 40 30 30 20 20 10 10 10 15 20 25 Ideal key (from same sensor) Correct key (from same BSN) Incorrect key (without key optimization) Incorrect key (with key optimization) To account for the channel ... computed as E xd [n] E v[n] 10 15 20 25 Ideal key (from same sensor) Correct key (from same BSN) Incorrect key (without key optimization) Incorrect key (with key optimization) Figure 9: INTRAS data ... Processing A single BSN Ear sensor Shoulder sensor A simple mobile health topology BSN Health care professionals Server Wrist sensor Knee sensor BSN Server BSN Ankle sensor BSN (a) BSN (b) Figure...

Ngày tải lên: 22/06/2014, 00:20

... presence of very small air bubble size in oil, three capacitive sensors are used placed extremely tightly outside the pipeline Types of the capacitive sensors have more advantages in comparison with ... and Simulations A Mathematical background Capacitive sensors convert a change in location, distance, or dielectrics to electrical signals Capacitive sensors detect any changes in the three parameters ... bubble is center of capacitive sensor, both position and have alsmost the same sensitive detection and the sensing is less sensitive than case of position and position [7] Capacitive sensors are small...

Ngày tải lên: 24/06/2015, 08:17

... parameter of the investigated liquid and occurring inside of the capacitive sensor Similar structure of this proposed capacitive sensor can be reduced to a micrometer size for using in microfluidic ... industry, pharmacy, chemical analysis and synthesis, and so on 2 Fluidic capacitive sensor and electronic circuit design A capacitive sensor based on a change of capacitance corresponds to permittivity ... capacitance when the something changes inside the capacitive sensor by a change of permittivity and conductivity In this paper, a three-electrode capacitive sensor is used to detect objects inside the...

Ngày tải lên: 16/12/2017, 13:16

Ngày tải lên: 06/08/2012, 15:04

... leave looks could me Aren't you Hang on b 10 a a known get on have in common argue keep in touch lost touch stay friends used to eat out usually visit Did you use to wear used to go didn't use ... GRAMMAR a Large quantity: many LISTENING LISTENING a lC David get on got to get get to know get in touch got rid of getting READING a 2c a Marie Will unless b too much very few too many lots of c ... a 2.1 6.1 3.1 exciting embarrassed interested 8.1 b tired worrying boring excited interesting depressing embarrassed HOW WORDS WORK 3a 4e 4a 5g 6d 7e READING On foot or by metro From metro stations...

Ngày tải lên: 07/08/2012, 09:49