Haptic health feedback monitoring

A haptic health feedback monitor includes a health parameter monitor that detects a health parameter. A haptic feedback generator receives the health parameter and compares it to a predetermined level. If the health parameter reaches or exceeds the level, a type of haptic feedback to generate is determined. The type of feedback may depend on which predetermined level is reached or exceeded. The haptic feedback generator then generates the determined type of haptic feedback.

FIELD OF THE INVENTION

One embodiment of the present invention is directed to a haptic feedback system. More particularly, one embodiment of the present invention is directed to a system that generates haptic feedback based on monitored health parameters.

BACKGROUND INFORMATION

In the medical profession today, the advent of high technology has provided a myriad of impressive diagnostic tools. However the focus of this medical technology has been on diagnosis of acute conditions, rather than advanced warnings and preventive advice. Routine “checkups” are the recognized method of monitoring a person's health. Such examinations provide a physician with information relating to the patient's condition. However, unless a patient's checkup is fortuitously scheduled for a time at which symptoms of an ensuing illness are just developing, the checkup may not be effective in helping to detect the onset of an adverse medical condition.

Portable health monitors have been developed in the past which monitor body/health parameters specific to a particular medical condition. In some cases these monitors record specific parameter data, while in others they provide an output to the patient which is indicative of the physical parameters they sense. Some monitors simply provide an alarm when the parameters reach a pre-set level of particular concern. Others such as portable heart rate monitors provide a digital display of heart rate to the patient. Still others record heart rate over time. Patients use such heart rate monitors to warn them of high heart rates. Athletes use them to ensure that their physical training includes periods of elevated heart rate thought to be sufficient to promote conditioning. Similar monitors also exist for measuring other parameters.

Known methods of alerting users of health parameters are fairly limited. In many instances, a user needs to be alerted or informed of parameters without having to look at a specific display or listen for a distinctive noise. Based on the foregoing, there is a need for an improved system and method for monitoring and alerting a user of health parameters.

SUMMARY OF THE INVENTION

One embodiment is a haptic health feedback monitor that includes a health parameter monitor that detects a health parameter. A haptic feedback generator receives the health parameter and compares it to a predetermined level. If the health parameter reaches or exceeds the level, a type of haptic feedback to generate is determined. The type of feedback may depend on which predetermined level is reached or exceeded. The haptic feedback generator then generates the determined type of haptic feedback.

DETAILED DESCRIPTION

Embodiments of the present invention may include kinesthetic feedback (such as active and resistive force feedback) and/or tactile feedback (such as vibration, texture, and heat), more generally known collectively as “haptic feedback”, to provide health parameters to a user. Haptic feedback can provide cues that enhance and simplify the user interface. Specifically, vibration effects, or vibrotactile haptic effects, may be useful in providing cues to users of electronic devices to alert the user to specific events, or provide realistic feedback to create greater sensory immersion within a simulated or virtual environment. One embodiment is a health monitoring system in which haptic feedback is used to alert a user of health parameter levels.

FIG. 1is a plan view of a health monitoring system30in accordance with one embodiment that monitors health parameters of a user. The system includes a health parameter monitor32coupled to a haptic feedback generator34. Health parameter monitor32may be any type of device for monitoring health parameters. For example, embodiments that are used for disease management may monitor blood glucose, blood pressure, ambulatory ECG, respiratory, temperature, heart rate, blood salinity, blood electrolytes, hormones, blood iron, blood alcohol, etc. Embodiments that are used for healthy lifestyle management may include monitoring for temperature, heart rate, blood pressure, amount of work or rate of work performed, etc.

One embodiment of haptic parameter monitor32may be a chest strap, as shown inFIG. 1, that includes a variety of parametric sensors that can detect health parameters non-invasively. Other embodiments may detect health parameters in a more invasive method such as through sampling of blood or other body fluids. Health parameter monitor32may include a processor and memory.

In one embodiment, haptic feedback generator34is any type of device that is capable of communicating with health parameter monitor32to receive measured health parameters, and is capable of applying haptic feedback to a user in response to the health parameters. Haptic feedback generator34may be worn on the user's wrist, as shown inFIG. 1, or on any other portion of the user's body, including as a glove on a hand, a belt around the waist, a shoe or clothing or accessories such as a shirt, pants, undergarments, sunglasses, ear-pieces, rings, bracelets, necklaces, etc. Haptic feedback generator34may also be a device that is not “attached” to the user's body but still is able to apply haptic feedback that can be detected by the user. For example, a cellular telephone that can be slipped in the user's pocket may be used to apply a haptic feedback to the user. Further, haptic feedback generator34may be housed in the same physical device as health parameter monitor32.

FIG. 2is a block diagram of health monitoring system30in accordance with one embodiment. Health parameter monitor32is in communications with haptic feedback generator34via communication link36. Communication link may be any type of interface for communicating data, including wired, wireless, radio, infra-red (“IR”), etc. Health parameter monitor32and haptic feedback generator34include communication modules (not shown) for facilitating data communications via communication link36.

Processor12can decide what haptic effects are to be played and the order in which the effects are played based on high level parameters which are based on information from the monitor32regarding health parameter values falling outside of or reaching predefined levels. In general, the high level parameters that define a particular haptic effect include magnitude, frequency, duration, attack level, attack time, fade level and fade time. These high level parameters can also be dynamically changed. Individual haptic effects can also be grouped together to form more complex haptic effects or timelines.

Processor12outputs the control signals to drive circuit16which includes electronic components and circuitry used to supply actuator18with the required electrical current and voltage to cause the desired haptic effects. Actuator18is a haptic device that generates a vibration on the body of haptic feedback generator34or in some other area so that it can be felt by the user. Actuator18may be, for example, an electromagnetic actuator such as an Eccentric Rotating Mass (“ERM”) in which an eccentric mass is moved by a motor, a Linear Resonant Actuator (“LRA”) in which a mass attached to a spring is driven back and forth, or a “smart material” such as piezoelectric, electro-active polymers or shape memory alloys.

Memory20can be any type of storage device, such as random access memory (“RAM”) or read-only memory (“ROM”). Memory20stores instructions executed by processor12. Memory20may also be located internal to processor12, or any combination of internal and external memory. Memory20further stores data of measured parameters from haptic parameter monitor32so that it can be used at a later time.

Haptic feedback generator34can generate multiple types of haptic effects to communicate different information to the user. For example, for vibration based haptic effects, high amplitude, high frequency vibration can communicate one type of information, while low amplitude, low frequency vibration can communicate another type of information. Similarly, for temperature based haptic effects, a cold temperature or hot temperature may communicate two or more types of information. Other examples of possible haptic effects that can be varied to communicate more than one type of information include humidity levels (e.g., wet or dry) or the rigidity of generator34(e.g., it can be changed from loose and floppy to tight/constricting and rigid). All permutations and combinations of the various types of haptic feedback can be combined in embodiments to create compelling haptic effects. The use of varying patterns of haptic effects can also be used to communicate different information to the user. A limitless number of haptic patterns could be used to communicate a plethora of health-related information by varying not only the individual haptic effect amplitude, frequency and duration parameters, but by varying the durations between these haptic effects and by combining the same or dissimilar haptic effects into unique patterns for the purpose of this communication. For example, in one embodiment the application of a series of short duration haptic effects repeated at a set interval can communicate one type of information and the application of a series of long duration haptic effects at a different interval can communicate another type of information.

Many health parameters monitored by health parameter monitor32have various levels that may be of interest to a user. For example, for a measured heart rate a user might desire a haptic feedback when the heart rate exceeds a predetermined level (e.g., 180 beats per minute (“bpm”)). However, some athletes attempt to get their heart rate within various “zones” such as Zone 1 (50-60% of maximum heart rate); Zone 2 (60-70% of maximum heart rate); Zone 3 (70-80% of maximum heart rate); Zone 4 (80-90% of maximum heart rate); Zone 5 (90-100% of maximum heart rate). For these users, it is beneficial to receive a different type of haptic effect when entering each zone. Similarly, one level of blood glucose may generate one type of haptic effect, while a second level, which may indicate that medication or other steps must be undertaken immediately, may generate another type of haptic effect.

FIG. 3is a flow diagram of the functionality of health monitoring system30in accordance with one embodiment. In one embodiment, the functionality of the flow diagram ofFIG. 3is implemented by software stored in or loaded into memory and executed by a processor. In other embodiments, the functionality can be performed by hardware, or any combination of hardware and software. Further, any of the functionally may be performed by either monitor32or generator34.

At104, haptic feedback generator34compares the health parameter to a predetermined level, such as zone 2 heart rate, mildly high blood glucose level, etc.

At106, based on the comparison, generator34determines a type of haptic feedback to generate.

At108, the haptic feedback parameters are compiled and sent to the haptic device (e.g., actuator drive circuit16and vibration actuator18) to create the haptic feedback. Therefore, the particular haptic feedback that is generated will depend on the type determined at106. Similarly, different levels at104will result in a different type of haptic feedback being generated at108.

In addition to generating haptic feedback at108to provide an alert to the user, in some embodiments the haptic feedback itself may counteract the health parameter. For example, if the type of haptic feedback is temperature based, a rising temperature can be counteracted by the application of a cold temperature haptic effect. or moisture released in response to the body suffering from arid conditions.

Further, the haptic feedback alert can be generated remotely from health parameter monitor32and can be applied to a user other than the user wearing health parameter monitor32. For example, in combat situations, medics could be informed of a soldier's need for medical attention or more generally alerted to the need for medical attention for a group of soldiers based on an average of the group's vital stats readings. Further, those who care for the elderly or the physically disabled can be alerted for the need for medical attention or other type of assistance, or it can be used to remotely monitor children.

In one embodiment, health parameter monitor32further includes a Global Positioning System (“GPS”) that generates information regarding the geographic location of the user. In one embodiment, the GPS information can be used after the alert has been triggered to assist in guiding medical or monitoring personal to the person needing attention. In one embodiment, after triggering a haptic health alert and communicating vital health information to the monitoring staff, the system can enter a GPS mode that provides guidance through a series of haptic effects of increasing amplitude, frequency, duration or patterns that assist in pinpointing the location of the person needing attention. In one embodiment, the haptic effects, in addition to being generated at a remote user, can also be used as a two-way communication system in sending one or more haptic effects to the injured person, letting them know a number of relevant facts such as: the alert has been sent; the alert has been received; help is on the way; GPS pinpointing has been activated; or the relative position or distance of medical assistance.