Handheld devices

The chip is a standalone microsensor system that does not need any external measurement equipment for sensor control and readout. The sensor system chip has been connected to a computer via an f C-to-USB converter box, i.e., in this box is a microcontroller that translates the I C format coming from the chip into USB format for the computer or laptop. The power supply of the chip is also provided by the USB connection. The sensor system can be read out directly by a microcontroller and is, therefore, well suited for handheld devices or distributed sensor networks. 

A handheld thermocouple measurement device and an IR temperature sensor are very important to have for understanding the performance of the extruder. These devices have been discussed previously in this chapter. In many of the case studies presented later, the extrudate temperature was measured by immersing a handheld thermocouple probe into the extrudate. The entire probe length is immersed or draped in the extrudate to minimize heat conduction to cooler parts of the probe. The highest temperature measured is the reported value. If it is unsafe to measure the extrudate temperature using a handheld device, then an IR temperature sensor is used to estimate the discharge temperature. 

Several different types of operable devices based on this simple design schematic have been successfully fabricated by ICx Technologies, under the name Fido. The simphcity of the method allows for the use of a small amount of associated optics and electronics. As a result, complete, portable handheld devices weighing less than 2 lb (Figure 8) have been developed and successfully tested for personnel, vehicle. 

The ideal scenario would be to have the power of a traditional IR analyzer but with the cost and simplicity of a simple filter device, or even better to reduce the size down to that of a sensor (such as the spectral detector mentioned earlier) or a simple handheld device. This is not far-fetched, and with technologies emerging from the telecommunications industry, the life science industry and even nanotechnology, there can be a transition into analyzer opportunities for the future. There is definitely room for a paradigm shift, with the understanding that if an analyzer becomes simpler and less expensive to implement then the role of analyzers/sensor can expand dramatically. With part of this comes the phrase good enough is OK - there is no need for the ultimate in versatility or sophistication. Bottom line is that even in process instrumentation, simple is beautiful. 

The commercially available Fido and Fido XT explosives detection systems are both handheld devices as shown in Figure 9.5. The Fido incorporates the sampling head directly into the body of the device. The XT version includes a tethered extension for the inlet that allows the sampling head to be separated from the rest of the instrument. The sampling head is mounted on a pistol grip so that sampling can be performed more conveniently (Fig. 9.6). 

G.3.3.3 Liquid Crystal Displays (LCDs). Liquid crystalline polymers, first intro-dnced in Section 1.3.6.3, are ntilized for a different type of computer and television display, the liquid crystal display (LCD). Most of today s laptop computers and handheld devices ntilize color flat panel displays where the light transmission from the... 

Level a tool of varying length (made of wood, plastic, or a metal beam) that contains calibrated air bubble tube or tubes, used to ensure that work is vertically plumb or horizontally level (Note Newer leveling devices make use of laser technology and electronics and may be handheld devices that do the same job.) hand level, laser level... 

From the top, the client layer resides on an end user s desktop, laptop, or handheld device, which is typically, but not limited to, a Windows PC with a Web browser. Usually a Web-based client layer is called thin client, which is lightweight. The programs that run inside the browser are typically JavaScript, VB Script, Java Applets, ActiveX, or Web browser plug-in. Using a rich client such as. NET or Java Swing is another choice, although this book focuses on a Web-based architecture. 

As shown in Fig. 13.3, the patient is provided with a handheld device called the patient s programming unit, by which the patient can initiate... 

Harmonic analyzers or harmonic meters are relatively simple instruments for measuring and recording harmonic distortion data. Typically, harmonic analyzers contain a meter with a waveform display screen, voltage leads, and current probes. Some of the analyzers are handheld devices and others are intended for tabletop use. Some instruments provide a snapshot of the waveform and harmonic distortion pertaining to the instant during which the measurement is made. Other instruments are capable of recording snapshots as well as a continuous record of harmonic distortion over time. Obviously, units that provide more information cost more. Depending on the... 

The physical forms of readout and alarms depend on the status of the instrumentation. A handheld device with LCD display and input buttons/pads is adopted by most manufacturers. An audio alarm is also available. An on-screen menu-driven method is used for setting up user features such as display content and styles. A historical glucose graph is also available. 

Contact lenses are attractive formats for fluorescence-based sensing, as they are optically transparent, easily accessible, and are sufficiently inexpensive to be disposable. A handheld device for patients to self-test has been developed to excite and measure fluorescence from lenses (Figure 10.9) and some limited clinical trials have been performed.143 144 However, the efficacy of using tear fluid to manage diabetes... 

There exist a number of readout techniques based on optical beam deflection, variation in capacitance, piezoresistance, and piezoelectricity. Piezoelectricity is more suited for a detection method based on resonance frequency than the method based on cantilever bending. The capacitive method is not suitable for liquid-based applications. The piezoresistive readout has many advantages, and it is ideally suited for handheld devices. 

Haber, L., Nance, P., Maier, A., Price, P., Olajos, E., Bickford, L., McConnell, M., Klauenberg, B.J. (2007). Human effectiveness and risk characterization of oleoresin capsicum (OC) and pelargonic acid vanillylamide (PAVA or nonivamide) handheld devices. Air Force Research Laboratory, DTIC Technical Report No. ADA476262, May 1. 

Convenient to use Perception Access from computer, handheld device, phone Service accessible from device 100%... 

Electronic flashcards You can use these 150 flashcard-style questions to review your knowledge of A+ concepts. They are available for PCs and handheld devices. You can download the questions right into your Palm device for quick and convenient reviewing anytime, anywhere—without your PC ... 

Program. Based on IMS technology, the ICAM upgrades the CAM with improved reliability and maintainability. It is a handheld device for real-time detection of low levels of nerve and mustard vapors and is capable of both day and night operation. More than 6,000 ICAMs have been procured to date. 

With Rx Inhand , developers have a powerful tool for creating stand-alone handheld applications. This drug navigation and drug utilization review (DUR) engine enables developers to easily create systems for use by physicians to write prescriptions and to screen them on a handheld device for possible medication errors, thus potentially minimizing adverse medical events. 

In healthcare, we are today at a crossroads of yet, another of many notable technical developments. Personal computers have become ubiquitous and easier to use for healthcare professionals and patients. The newly available mobile or handheld devices have become more practical for real-time computing. Through the Internet or hand-eld device, there is ready access to a patient s medical information. With these tools, the art of practicing medicine is truly about to change. An electronic information resource for the Internet and for handheld devices, as for other platforms, requires that the data meet specific standards of reliability. First DataBank information is tried and true, a tested, authoritative source of such information. 

How will the prescription information get to the correct provider What devices will physicians use to interface with the system Computers, handheld devices ... 

---