CA2285781A1 - Toothbrush timing and motion sensing system - Google Patents
Toothbrush timing and motion sensing system Download PDFInfo
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- CA2285781A1 CA2285781A1 CA 2285781 CA2285781A CA2285781A1 CA 2285781 A1 CA2285781 A1 CA 2285781A1 CA 2285781 CA2285781 CA 2285781 CA 2285781 A CA2285781 A CA 2285781A CA 2285781 A1 CA2285781 A1 CA 2285781A1
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Abstract
The invention, in it's simplest form, is a toothbrush system with a motion sensor that detects and measures the time period when a threshold level of brushing motion is occurring. The system stops measuring the brushing time period when the brushing motion falls below the threshold motion level. A timer accumulates the periods of brushing and an indicator mechanism notifies the user when the brushing period reaches a predetermined brushing time interval. The indicator results are stored for a certain time period allowing the indicator to be monitored. The device is readily adaptable to fit over existing toothbrushes via an elastomeric sleeve or be incorporated into a new toothbrush.
Description
TOOTHBRUSH TIMING AND MOTION SENSING SYSTEM
BACKGROUND OF THE INVENTION
FIELD OF THE INVENTION
The present invention relates to an improved toothbrush system for ensuring adequate motion and time of brushing. More specifically, the invention relates to a means of monitoring a user's toothbrushing motion activity in combination with a timing system and an indicating means.
to BACKGROUND ART
The most common causes for dental problems are cavities and periodontitis.
Periodontitis refers to the gradual deterioration of matter surrounding the tooth, and cavities refer to spaces or pits formed in a tooth by decay. Bacteria that eventually lead to dental problems if not properly treated cause both periodontitis and cavities.
There are many ways to reduce or eliminate the harmful bacteria, thereby limiting tooth decay and periodontal problems. A healthy diet with the recommended vitamins and minerals is important. In addition, a regular regime of brushing and flossing combined with dental 2o examinations are the best known methods for preserving ones teeth.
Proper brushing and flossing removes food residues and plaque build-up, decreasing the bacteria around the teeth. It is recommended that a person brush their teeth three times a day, using the correct motion and activity for two minutes. However, it has been noted that a large number of people do not follow these guidelines. Most people do not brush for the suggested two minute time interval, without the proper motion, and not three times per day.
There is a problem with the training and monitoring of children to assure that they regularly and adequately brush their teeth. Children are more apt to skip brushing or do a superficial job at brushing unless closely supervised. Without attentive supervision, a child may merely wet the toothbrush and barely place the brush in their mouth.
Close parental attention is not always possible. Three minute egg-timers and other timers of all sorts have been known to be used, but absent parental supervision, these are not reliable indicators of actual, effective brushing time and action. Parents, and their well-intended children, need a better system for self monitoring and parental monitoring of everyday brushing activities during the child's formative years.
Besides children, the older population also needs a mechanism to keep track of brushing time. The elderly tend to have a lessened attentive span and have difficulty in assessing time to periods, especially if inflicted with a cognitive disease. As the number of senior citizens increases the need for a toothbrushing aid increases. A timer with an indicator appropriate for elder persons would provide the means for proper brushing time.
There have been various attempts to mark the length of time a person brushes by providing acoustic and/or visual aids. The prior art toothbrush timer and signaling devices lack the necessary elements to make them effective and commercially viable.
U.S. Patent 5,673,451 discloses an instructional toothbrush that has an indicator means incorporated into the toothbrush. The indicator acknowledges when the toothbrush is being operated with a lateral motion to close the switch in series with the indicator. The switch is angularly positioned so that a lateral motion completes the circuit and activates the indicator. No timing circuitry is disclosed.
An adaptive load sensor toothbrush is shown in U.S. Patent 5,784,742, wherein the electric load of the toothbrush drive is an indication of the pressure exerted on the teeth. Too much pressure causes an indicator to warn the user to decrease the force or pressure. A similar variation is disclosed in U.S. Patent 5,493,747.
In U.S. patent 4,788,734, a toothbrush is equipped with an indicator means, either sound 3o visual or a combination, and is activated by a switch. A computer means has timing circuitry which measures a predetermined time period before activating the indicator means indicating that the brushing period is completed. Similarly, U.S. Patent 5,438,726 has a manual switch that is used to set a counter and indicate when completed. No motion sensing mechanism is discussed.
A programmable device which emits an audible alarm to indicate when a pre-selected tooth brushing times is completed activated by the insertion of the toothbrush into the device is shown in U.S. patent. 5,184,959. There is no motion sensor to indicate whether the person paused after placing the toothbrush head into the device or whether the user paused while brushing.
1o An electric toothbrush with a timer is discussed in U.S. Patent 4,450,599 wherein the timer is activated when the pressure exerted on the bristles exceeds a predetermined level. This unit tracks the actual time the minimum pressure is applied.
A sensing electronic toothbrush is described in U.S. patent 5,133,102 wherein current is caused to flow through the toothbrush by grasping the brush and bringing it into contact with the teeth. There is no particular motion required once the current path is established.
Many people also fail to replace toothbrushes as often as is recommended. An older toothbrush does not provide the necessary bristle action to clean away debris and can damage gums.
2o An improper brushing due to an old toothbrush may give a false impression of cleaning because the user brushed for the proper amount of time.
The prior art devices do not have the necessary features and elements to be effective in measuring the actual brushing time and reporting this information to the user.
What is needed is a device that measures the time that the toothbrush is actually brushing the teeth. The device should not count the non-brushing times where the user pauses or stops brushing. Such a device should be cost-effective to manufacture and market, and be adaptable to existing manual toothbrushes. This device should employ an indicator means that stores the brushing results for a certain interval so that a parent or guardian can check to see if the teeth were brushed properly.
BACKGROUND OF THE INVENTION
FIELD OF THE INVENTION
The present invention relates to an improved toothbrush system for ensuring adequate motion and time of brushing. More specifically, the invention relates to a means of monitoring a user's toothbrushing motion activity in combination with a timing system and an indicating means.
to BACKGROUND ART
The most common causes for dental problems are cavities and periodontitis.
Periodontitis refers to the gradual deterioration of matter surrounding the tooth, and cavities refer to spaces or pits formed in a tooth by decay. Bacteria that eventually lead to dental problems if not properly treated cause both periodontitis and cavities.
There are many ways to reduce or eliminate the harmful bacteria, thereby limiting tooth decay and periodontal problems. A healthy diet with the recommended vitamins and minerals is important. In addition, a regular regime of brushing and flossing combined with dental 2o examinations are the best known methods for preserving ones teeth.
Proper brushing and flossing removes food residues and plaque build-up, decreasing the bacteria around the teeth. It is recommended that a person brush their teeth three times a day, using the correct motion and activity for two minutes. However, it has been noted that a large number of people do not follow these guidelines. Most people do not brush for the suggested two minute time interval, without the proper motion, and not three times per day.
There is a problem with the training and monitoring of children to assure that they regularly and adequately brush their teeth. Children are more apt to skip brushing or do a superficial job at brushing unless closely supervised. Without attentive supervision, a child may merely wet the toothbrush and barely place the brush in their mouth.
Close parental attention is not always possible. Three minute egg-timers and other timers of all sorts have been known to be used, but absent parental supervision, these are not reliable indicators of actual, effective brushing time and action. Parents, and their well-intended children, need a better system for self monitoring and parental monitoring of everyday brushing activities during the child's formative years.
Besides children, the older population also needs a mechanism to keep track of brushing time. The elderly tend to have a lessened attentive span and have difficulty in assessing time to periods, especially if inflicted with a cognitive disease. As the number of senior citizens increases the need for a toothbrushing aid increases. A timer with an indicator appropriate for elder persons would provide the means for proper brushing time.
There have been various attempts to mark the length of time a person brushes by providing acoustic and/or visual aids. The prior art toothbrush timer and signaling devices lack the necessary elements to make them effective and commercially viable.
U.S. Patent 5,673,451 discloses an instructional toothbrush that has an indicator means incorporated into the toothbrush. The indicator acknowledges when the toothbrush is being operated with a lateral motion to close the switch in series with the indicator. The switch is angularly positioned so that a lateral motion completes the circuit and activates the indicator. No timing circuitry is disclosed.
An adaptive load sensor toothbrush is shown in U.S. Patent 5,784,742, wherein the electric load of the toothbrush drive is an indication of the pressure exerted on the teeth. Too much pressure causes an indicator to warn the user to decrease the force or pressure. A similar variation is disclosed in U.S. Patent 5,493,747.
In U.S. patent 4,788,734, a toothbrush is equipped with an indicator means, either sound 3o visual or a combination, and is activated by a switch. A computer means has timing circuitry which measures a predetermined time period before activating the indicator means indicating that the brushing period is completed. Similarly, U.S. Patent 5,438,726 has a manual switch that is used to set a counter and indicate when completed. No motion sensing mechanism is discussed.
A programmable device which emits an audible alarm to indicate when a pre-selected tooth brushing times is completed activated by the insertion of the toothbrush into the device is shown in U.S. patent. 5,184,959. There is no motion sensor to indicate whether the person paused after placing the toothbrush head into the device or whether the user paused while brushing.
1o An electric toothbrush with a timer is discussed in U.S. Patent 4,450,599 wherein the timer is activated when the pressure exerted on the bristles exceeds a predetermined level. This unit tracks the actual time the minimum pressure is applied.
A sensing electronic toothbrush is described in U.S. patent 5,133,102 wherein current is caused to flow through the toothbrush by grasping the brush and bringing it into contact with the teeth. There is no particular motion required once the current path is established.
Many people also fail to replace toothbrushes as often as is recommended. An older toothbrush does not provide the necessary bristle action to clean away debris and can damage gums.
2o An improper brushing due to an old toothbrush may give a false impression of cleaning because the user brushed for the proper amount of time.
The prior art devices do not have the necessary features and elements to be effective in measuring the actual brushing time and reporting this information to the user.
What is needed is a device that measures the time that the toothbrush is actually brushing the teeth. The device should not count the non-brushing times where the user pauses or stops brushing. Such a device should be cost-effective to manufacture and market, and be adaptable to existing manual toothbrushes. This device should employ an indicator means that stores the brushing results for a certain interval so that a parent or guardian can check to see if the teeth were brushed properly.
SUMMARY OF THE INVENTION
The invention, in it's simplest form, is a battery powered electronic circuit with a motion sensor that detects and signals when a threshold level of brushing motion is occurnng and stops signaling when the brushing motion falls below the threshold motion level. The device is readily adaptable to fit over existing manual toothbrushes or be incorporated into a new manual toothbrush.
A timer accumulates the time of proper brushing motion up to the desired minimum time, and an indicator mechanism notified the user when the time limit is met. The indicator results are stored for a certain time interval allowing the indicator to be monitored.
The circuit includes a signal holding feature, which retains the indicator of a proper length brushing. This allows a child to demonstrate to the parent, that the sequence was completed properly and allow the parent to monitor brushing with lesser supervision.
One embodiment of the circuit includes a counter that counts the total cycles of use and an indicator signals when the toothbrush should be replaced.
The circuit may be integrated into a toothbrush handgrip attachment, or even integrated into a toothbrush design. Such a design may feature replaceable brush sections or elements.
Timing the duration of the shaking motion monitors toothbrush use. Adequate brushing is indicated when a certain period of cumulative motion is detected. The indication is held for a period of time, allowing a parent to confirm the successful brushing.
The anticipation of a successful indication also encourages children to keep brushing until the predetermined period of time has elapsed.
Allows parents to confirm that the children have brushed their teeth with the adequate motion for an adequate time interval.
The invention, in it's simplest form, is a battery powered electronic circuit with a motion sensor that detects and signals when a threshold level of brushing motion is occurnng and stops signaling when the brushing motion falls below the threshold motion level. The device is readily adaptable to fit over existing manual toothbrushes or be incorporated into a new manual toothbrush.
A timer accumulates the time of proper brushing motion up to the desired minimum time, and an indicator mechanism notified the user when the time limit is met. The indicator results are stored for a certain time interval allowing the indicator to be monitored.
The circuit includes a signal holding feature, which retains the indicator of a proper length brushing. This allows a child to demonstrate to the parent, that the sequence was completed properly and allow the parent to monitor brushing with lesser supervision.
One embodiment of the circuit includes a counter that counts the total cycles of use and an indicator signals when the toothbrush should be replaced.
The circuit may be integrated into a toothbrush handgrip attachment, or even integrated into a toothbrush design. Such a design may feature replaceable brush sections or elements.
Timing the duration of the shaking motion monitors toothbrush use. Adequate brushing is indicated when a certain period of cumulative motion is detected. The indication is held for a period of time, allowing a parent to confirm the successful brushing.
The anticipation of a successful indication also encourages children to keep brushing until the predetermined period of time has elapsed.
Allows parents to confirm that the children have brushed their teeth with the adequate motion for an adequate time interval.
An object of the invention is a toothbrush timing and motion sensing system comprising a computing means, wherein the computing means has a timing means for measuring periods of active brushing, and wherein the computing means calculates a total active brushing time by adding the periods of active brushing that occur within a predetermined allowable time interval, and determines a successful brushing period when the total active brushing time exceeds a predetermined brushing time interval. There is a motion sensor connected to the computing means, wherein the motion sensor detects a brushing motion, and wherein the brushing motion determines the periods of active brushing. An indicator means for indicating completion of the successful brushing period, wherein the indicator has a means for holding the indicator means. A
1 o power source is connected to the computing means, the indicator, and the motion sensor.
A further object of the invention, wherein the indicator means is a light emitting diode.
Another object further comprises a speaker, wherein the indicator means includes a sound indicator.
And another object wherein the power source is a disposable battery. It is also possible to have an AC power source.
2o An object further providing the computing means as a microcontroller.
Yet a further object of the invention, wherein the motion sensor is a steel ball encased within a metallic cylinder, and wherein the cylinder has a first wire and a second wire separately disposed on one end of the cylinder, and the sensor detects when the ball contacts the first and second wire.
And another object, wherein the motion sensor comprises a sealed metallic cylinder with a spring having a fixed end and a free end, wherein the spring is fixedly attached at the fixed end to a first end of the cylinder, and wherein a first wire is connected to the first end and a second 3o wire is connected to the free end of the spring.
1 o power source is connected to the computing means, the indicator, and the motion sensor.
A further object of the invention, wherein the indicator means is a light emitting diode.
Another object further comprises a speaker, wherein the indicator means includes a sound indicator.
And another object wherein the power source is a disposable battery. It is also possible to have an AC power source.
2o An object further providing the computing means as a microcontroller.
Yet a further object of the invention, wherein the motion sensor is a steel ball encased within a metallic cylinder, and wherein the cylinder has a first wire and a second wire separately disposed on one end of the cylinder, and the sensor detects when the ball contacts the first and second wire.
And another object, wherein the motion sensor comprises a sealed metallic cylinder with a spring having a fixed end and a free end, wherein the spring is fixedly attached at the fixed end to a first end of the cylinder, and wherein a first wire is connected to the first end and a second 3o wire is connected to the free end of the spring.
Yet another object, wherein the computing means counts each brushing motion, and wherein the computing means determines a successful brushing period when the count exceeds a predetermined successful brushing count.
Another object includes an engagable toothbrush head that engages the toothbrush handle.
An object of the invention is for a toothbrush timing and motion sensing system comprising a toothbrush sleeve having a handle portion on a first end and a toothbrush engaging portion on a second end, wherein electronic components are mounted in the handle portion.
There is a l0 computing means, wherein the computing means has a timing means for measuring periods of active brushing, and wherein the computing means calculates a total active brushing time by adding the periods of active brushing that occur within a predetermined allowable time interval, and determines a successful brushing period when the total active brushing time exceeds a predetermined brushing time interval. There is a motion sensor connected to the computing means, wherein the motion sensor detects a brushing motion, and wherein the brushing motion determines the periods of active brushing. The system further provides an indicator means for indicating completion of the successful brushing period, wherein the indicator has a means for holding the indicator means. There is also a power source connected to the computing means, the indicator, and the motion sensor.
2o Additional object includes the handle portion with a removeable end cap, so that the battery can be replaced.
Another object wherein the sleeve is an elastomeric material with an easy-gripping surface.
An object of the invention includes a method for improving the tooth brushing process using a toothbrush with timing and motion sensing means, comprising the steps of maintaining the toothbrush in a sleep mode when not in use. Detecting when the toothbrush is being used in a 3o manner that triggers a motion sensor. Measuring active toothbrushing periods, and ceasing to measure said periods if the user stops using the toothbrush in a manner that triggers the motion sensor. Adding the active toothbrushing periods within a time interval to produce a total brushing period. Comparing the total brushing period to a predetermined brushing time period. Indicating a successful brushing results when the total brushing period exceeds the predetermined brushing time period. Holding the successful brushing results for a monitoring period, and resetting the system and returning to the low sleep mode.
A further object includes the step of playing an audible indication when the total brushing period exceeds the predetermined brushing time period.
1o Objects and advantages of the present invention will become readily apparent to those skilled in this art from the following detailed description, wherein I have shown and described only a preferred embodiment of the invention, simply by way of illustration of the best mode contemplated by me on carrying out my invention.
Other objects, features and advantages are apparent from description in conjunction with the accompanying claims, drawings and specification.
BRIEF DESCRIPTION OF THE DRAWINGS
2o FIG. 1 a basic block diagram of the toothbrush elements;
FIG. 2 illustrates a layout of the components onto a circuit board;
FIG. 3 is a schematic of the toothbrush timing and motion system;
FIG. 4 is an illustration of the toothbrush timing and motion system incorporated into a handle;
FIG. 5 is an illustration of the toothbrush timing and motion system incorporated into a sleeve that conforms to the handle of an existing toothbrush;
FIG. 6 is a detailed depiction of the motion sensing mechanism incorporating a rolling ball;
FIG. 7 is a detailed depiction of the motion sensing mechanism incorporating a spring.
DESCRIPTION OF THE PREFERRED EMBODIMENT
In the basic block diagram of FIG. 1, a motion sensor 10 is connected to a computing means 20. The computing means is energized by a power source 30. An indicator communicates with a user and is controlled by the computing means 20. The power source 30 can be a battery, household AC, or solar. In the preferred embodiment, for ease and safety, a 1o battery is utilized. The batteries may be replaceable or rechargeable, however in the preferred embodiment it is non-replaceable and the unit is disposable.
FIG. 2 illustrates a possible packaging layout 22 for the invention on a component board 25. A battery 50 is fitted onto the board 25, and a processor or microcontroller 60, visual indicator 45, audible indicator 40 and motion sensor 10 are all connected to the board 25. The design is implemented using a microcontroller 60, which is essentially a complete computer on a single chip, and permits the present invention to be fabricated within a small package, easily incorporated into a tooth brushing handle or as a sleeve. The modern microcontrollers 60 are extremely low power devices that run for long period of time on a single battery cell 50.
As shown in FIG. 2, the computing means 20 can be a microcontroller or microprocessor, and is connected to at least one type of indicator. Typically, an audible indicator 40, and/or visual indicator 45 are installed and indicate the results as determined by the microcontroller that monitors the motion sensor 10. A visual indicator 45, such as an LED or LCD, also retains the brushing results for later viewing. The audible indicator 40 can be a beeper, bell, or play a melody or tune. Other indicating means include a vibration means, or a combination of indicator means.
The motion sensor 10 can be any of the many types of mechanical "switches"
which open 3o and close upon being shaken. A logical vibration sensor is one embodiment where a spring and _g_ cylinder type switch or rolling ball type switch similar to the type found in flashing sneakers is used as the motion sensor 10.
A circuit schematic is shown in FIG. 3, wherein a battery 50 is tied to the microcontroller 60 and provides the necessary power source. Vibration sensor 80 is tied to an input on the microcontroller 60 and also pulled up to the battery power through a resistor 70. When the vibration sensor 80 is open circuit, the microcontroller 60 input is at the battery voltage, and when the vibration sensor 80 is closed circuit, the microcontroller 60 input is at ground voltage.
1o The microcontroller 60 turns the LEDI 90 visual indicator on and off, by controlling the voltage on the outl pin. When set to voltage Vss, current flows from battery 50 through LED1 90 and through current limiting resistor 100, and the LED 1 90 generates light.
When the microcontroller 60 sets outl pin to voltage Vdd, no current flows through the LED1 90, and hence no light is generated.
The speaker 110 makes sound when the voltage from microcontroller 60 pin out2 changes between Vdd and Vss. When microcontroller 60 pin out2 is set to Vdd, current flows through the speaker 110 to ground. When microcontroller 60 pin out2 is set to Vss, current flow stops. This start and stop control of current flow through speaker 110 generates sound.
The circuitry can be embedded inside the toothbrush handle 170, as show in FIG. 4. The circuit board and components 22 are encased in a sealed handle 170. The visual indicator 45 can protrude through the handle exterior, but for watertightness, an opaque covering of the handle 170 could cover the visual indicator 45. The toothbrush portion 150 can be affixed to the handle 170 so that the entire unit is disposed of when the brush is worn or the battery dies. The microcontroller 60 can also be programmed to inform the user when a new brush is required, indicating the life expectancy of the unit, such as a flashing LED.
In another embodiment, the handle 170 has an interface 160 that allows for 3o interconnecting a toothbrush portion 150 to a handle portion 170. The manufacturer can place the electronics in the handle with detachable or replaceable brush heads. This allows the user to replace the toothbrush portion 150 as needed, desired, or instructed, while still using the same battery. It is also within the scope of the invention to employ a replaceable battery. Various interconnecting means are possible, including a toothbrush portion 150 with a stem having a retainer clip that would interconnect with a mating slot in the toothbrush handle 170. The system can be designed to accept current toothbrush heads that are industry standards.
The electronics can also be embedded in a sleeve 200, as shown in FIG. 5, which slips over the handle of an existing toothbrush. The inner sleeve section 210 is designed to fit any standard toothbrush, and has a width W and a length L designed to firmly affix the standard 1o toothbrush to the handle 170. The advantage of situating the circuitry in a sleeve 200 is that it allows the toothbrush to be replaced while using the same battery. The toothbrush can easily be replaced as worn, while the electronics remains fixed in the sealed end 220.
The sleeve 200 allows users to select their own style and brand of toothbrush and still provide the benefits of the present invention. The sleeve 200 is an elastomeric material that fits almost any toothbrush handle snugly. There can be an end cap or retention means for sealing the electronics yet still allowing for battery replacement, although in the preferred embodiment it is sealed.
The length L of the sleeve must be sufficient to firmly grasp the handle and not allow excessive slippage. The length L ranges from one inch to six inches, depending on whether the 2o brush is an adult or child's toothbrush. The adult toothbrush tends to be longer than a child's toothbrush. The handle of an adult toothbrush is approximately six inches from the gripping end to the beginning of the bristles. For adult brushes, a larger length L is used to firmly retain and hold the toothbrush. The overall length of the present invention is kept to a minimum by incorporating the components onto a single component board in the end of the handle.
The sleeve is also designed for easy grasping, especially by a child or the elderly. The soft exterior and enlarged gripping surface makes it easier to hold and brush.
FIG. 6 shows one embodiment of the motion sensor as a tube 260, sealed at both ends, with a metal ball 250 inside. Two wires 270, 280 enter one end of the tube and extend just a little bit into the tube. When the tube is tilted, the metal ball 250 rolls back and forth. When the ball 250 reaches the end with the two wires and contacts the two wires, an electrical circuit is created across the wires. The motion sensor therefore behaves as an electrical switch with switch closure when the ball 250 is at one end of the tube.
Another embodiment is shown in FIG. 7, where a spring 320 is loosely fitted inside a metal cylinder 260. The spring 320 and cylinder 260 are firmly attached to a common plane at one end such that the spring 320 is not touching the walls of the cylinder 260. A first wire 310 is attached to the spring and a second wire 300 is attached to the cylinder at this fixed end. When shaken, the spring 320 at the untethered end touches the cylinder wall, creating an electrical to circuit across the two wires. The type and length of the spring and the distances of the wire and cylinder are variables that determine the amount of motion required to make the sensor function properly.
Both of these sensors are found in flashing sneakers. The ball-in-tube sensor has better directional discrimination, while the spring-in-cylinder sensor is more sensitive to any motion in any axis.
The firmware inside the microcontroller functions as follows: when no vibrations are detected, the microcontroller is in low power sleep mode. Once constant vibrations are detected, 2o the timer is started. By keeping the device in low power sleep mode until constant vibrations are detected preserves the life of the battery during the start-up time where a user wets the brush, and adds toothpaste. This time period is not counted towards the overall brushing time.
The timer advances when consistent motion is detected. During periods having little or no motion, such as when the toothbrush is placed down or is being wet, the timer is paused. When the cumulative time of motion reaches the predetermined period within an overall predetermined time interval, the indicator is activated. The rate and length of the indication can be programmed as to extend the battery life.
3o In the preferred embodiment the indicator will show the successful brushing indication for sixty (60) minutes. This allows ample time for a parent to confirm the brushing. After this "hold" period expires, the timer is reset and the microcontroller is returned to a low power sleep mode.
The period of active brushing is set for two (2) minutes according to present dental guidelines. The overall time interval within which the periods of active brushing are accumulated is approximately five (5) minutes.
An audible beeper is used to generate a short tone or melody when the brushing period has expired. This allows the user to know when to stop without looking at the visible indicator.
to The audible/visual indicator can also be used to inform the user when the toothbrush has to be replaced.
The computation of brush time and brush replacement period can be computed based on the number of times the motion sensor switch is triggered. The microprocessor can count the number of successful triggering motions and store the number in memory. Thus, a time interval of brushing can be augmented with a motion count to extend the time interval if the user is a 'lazy' brusher.
The motion sensor unit also can be used to set a minimum threshold of movement required to trigger the counting. In the ball and wire embodiment, the unit is disposed so that the motion causes the ball to roll back and forth to trigger the circuit. The weight of the ball, the length of the cylinder and the placement of the wires can be used to alter the threshold levels.
With the spring embodiment, the type of spring, number of coils, length of spring, can all be used to change the dynamics of the trigger. The threshold level will emulate the minimum activity required for adequate brushing.
The invention also incorporates a means of altering the time intervals of the toothbrush system. The user can set the total allowable time interval for measuring the active brushing periods in order to customize the system. The user can also alter the active brushing period 3o required in order to obtain a successful brushing indication. This customization increases the flexibility so the user can adapt the system to the user's lifestyle and habits.
The foregoing description of the preferred embodiment of the invention has been presented for the purpose of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed. Many modifications and variations are possible in light of the above teachings.
The invention is susceptible of many variations, all within the scope of the claims. The preferred embodiment described here and illustrated in the figures should not be construed as in any way limiting.
l0 No warranty is expressed or implied as to the actual degree of safety, security or support of any particular specimen of the invention in whole or in part, due to differences in actual production designs, materials and use of the products of the invention.
Another object includes an engagable toothbrush head that engages the toothbrush handle.
An object of the invention is for a toothbrush timing and motion sensing system comprising a toothbrush sleeve having a handle portion on a first end and a toothbrush engaging portion on a second end, wherein electronic components are mounted in the handle portion.
There is a l0 computing means, wherein the computing means has a timing means for measuring periods of active brushing, and wherein the computing means calculates a total active brushing time by adding the periods of active brushing that occur within a predetermined allowable time interval, and determines a successful brushing period when the total active brushing time exceeds a predetermined brushing time interval. There is a motion sensor connected to the computing means, wherein the motion sensor detects a brushing motion, and wherein the brushing motion determines the periods of active brushing. The system further provides an indicator means for indicating completion of the successful brushing period, wherein the indicator has a means for holding the indicator means. There is also a power source connected to the computing means, the indicator, and the motion sensor.
2o Additional object includes the handle portion with a removeable end cap, so that the battery can be replaced.
Another object wherein the sleeve is an elastomeric material with an easy-gripping surface.
An object of the invention includes a method for improving the tooth brushing process using a toothbrush with timing and motion sensing means, comprising the steps of maintaining the toothbrush in a sleep mode when not in use. Detecting when the toothbrush is being used in a 3o manner that triggers a motion sensor. Measuring active toothbrushing periods, and ceasing to measure said periods if the user stops using the toothbrush in a manner that triggers the motion sensor. Adding the active toothbrushing periods within a time interval to produce a total brushing period. Comparing the total brushing period to a predetermined brushing time period. Indicating a successful brushing results when the total brushing period exceeds the predetermined brushing time period. Holding the successful brushing results for a monitoring period, and resetting the system and returning to the low sleep mode.
A further object includes the step of playing an audible indication when the total brushing period exceeds the predetermined brushing time period.
1o Objects and advantages of the present invention will become readily apparent to those skilled in this art from the following detailed description, wherein I have shown and described only a preferred embodiment of the invention, simply by way of illustration of the best mode contemplated by me on carrying out my invention.
Other objects, features and advantages are apparent from description in conjunction with the accompanying claims, drawings and specification.
BRIEF DESCRIPTION OF THE DRAWINGS
2o FIG. 1 a basic block diagram of the toothbrush elements;
FIG. 2 illustrates a layout of the components onto a circuit board;
FIG. 3 is a schematic of the toothbrush timing and motion system;
FIG. 4 is an illustration of the toothbrush timing and motion system incorporated into a handle;
FIG. 5 is an illustration of the toothbrush timing and motion system incorporated into a sleeve that conforms to the handle of an existing toothbrush;
FIG. 6 is a detailed depiction of the motion sensing mechanism incorporating a rolling ball;
FIG. 7 is a detailed depiction of the motion sensing mechanism incorporating a spring.
DESCRIPTION OF THE PREFERRED EMBODIMENT
In the basic block diagram of FIG. 1, a motion sensor 10 is connected to a computing means 20. The computing means is energized by a power source 30. An indicator communicates with a user and is controlled by the computing means 20. The power source 30 can be a battery, household AC, or solar. In the preferred embodiment, for ease and safety, a 1o battery is utilized. The batteries may be replaceable or rechargeable, however in the preferred embodiment it is non-replaceable and the unit is disposable.
FIG. 2 illustrates a possible packaging layout 22 for the invention on a component board 25. A battery 50 is fitted onto the board 25, and a processor or microcontroller 60, visual indicator 45, audible indicator 40 and motion sensor 10 are all connected to the board 25. The design is implemented using a microcontroller 60, which is essentially a complete computer on a single chip, and permits the present invention to be fabricated within a small package, easily incorporated into a tooth brushing handle or as a sleeve. The modern microcontrollers 60 are extremely low power devices that run for long period of time on a single battery cell 50.
As shown in FIG. 2, the computing means 20 can be a microcontroller or microprocessor, and is connected to at least one type of indicator. Typically, an audible indicator 40, and/or visual indicator 45 are installed and indicate the results as determined by the microcontroller that monitors the motion sensor 10. A visual indicator 45, such as an LED or LCD, also retains the brushing results for later viewing. The audible indicator 40 can be a beeper, bell, or play a melody or tune. Other indicating means include a vibration means, or a combination of indicator means.
The motion sensor 10 can be any of the many types of mechanical "switches"
which open 3o and close upon being shaken. A logical vibration sensor is one embodiment where a spring and _g_ cylinder type switch or rolling ball type switch similar to the type found in flashing sneakers is used as the motion sensor 10.
A circuit schematic is shown in FIG. 3, wherein a battery 50 is tied to the microcontroller 60 and provides the necessary power source. Vibration sensor 80 is tied to an input on the microcontroller 60 and also pulled up to the battery power through a resistor 70. When the vibration sensor 80 is open circuit, the microcontroller 60 input is at the battery voltage, and when the vibration sensor 80 is closed circuit, the microcontroller 60 input is at ground voltage.
1o The microcontroller 60 turns the LEDI 90 visual indicator on and off, by controlling the voltage on the outl pin. When set to voltage Vss, current flows from battery 50 through LED1 90 and through current limiting resistor 100, and the LED 1 90 generates light.
When the microcontroller 60 sets outl pin to voltage Vdd, no current flows through the LED1 90, and hence no light is generated.
The speaker 110 makes sound when the voltage from microcontroller 60 pin out2 changes between Vdd and Vss. When microcontroller 60 pin out2 is set to Vdd, current flows through the speaker 110 to ground. When microcontroller 60 pin out2 is set to Vss, current flow stops. This start and stop control of current flow through speaker 110 generates sound.
The circuitry can be embedded inside the toothbrush handle 170, as show in FIG. 4. The circuit board and components 22 are encased in a sealed handle 170. The visual indicator 45 can protrude through the handle exterior, but for watertightness, an opaque covering of the handle 170 could cover the visual indicator 45. The toothbrush portion 150 can be affixed to the handle 170 so that the entire unit is disposed of when the brush is worn or the battery dies. The microcontroller 60 can also be programmed to inform the user when a new brush is required, indicating the life expectancy of the unit, such as a flashing LED.
In another embodiment, the handle 170 has an interface 160 that allows for 3o interconnecting a toothbrush portion 150 to a handle portion 170. The manufacturer can place the electronics in the handle with detachable or replaceable brush heads. This allows the user to replace the toothbrush portion 150 as needed, desired, or instructed, while still using the same battery. It is also within the scope of the invention to employ a replaceable battery. Various interconnecting means are possible, including a toothbrush portion 150 with a stem having a retainer clip that would interconnect with a mating slot in the toothbrush handle 170. The system can be designed to accept current toothbrush heads that are industry standards.
The electronics can also be embedded in a sleeve 200, as shown in FIG. 5, which slips over the handle of an existing toothbrush. The inner sleeve section 210 is designed to fit any standard toothbrush, and has a width W and a length L designed to firmly affix the standard 1o toothbrush to the handle 170. The advantage of situating the circuitry in a sleeve 200 is that it allows the toothbrush to be replaced while using the same battery. The toothbrush can easily be replaced as worn, while the electronics remains fixed in the sealed end 220.
The sleeve 200 allows users to select their own style and brand of toothbrush and still provide the benefits of the present invention. The sleeve 200 is an elastomeric material that fits almost any toothbrush handle snugly. There can be an end cap or retention means for sealing the electronics yet still allowing for battery replacement, although in the preferred embodiment it is sealed.
The length L of the sleeve must be sufficient to firmly grasp the handle and not allow excessive slippage. The length L ranges from one inch to six inches, depending on whether the 2o brush is an adult or child's toothbrush. The adult toothbrush tends to be longer than a child's toothbrush. The handle of an adult toothbrush is approximately six inches from the gripping end to the beginning of the bristles. For adult brushes, a larger length L is used to firmly retain and hold the toothbrush. The overall length of the present invention is kept to a minimum by incorporating the components onto a single component board in the end of the handle.
The sleeve is also designed for easy grasping, especially by a child or the elderly. The soft exterior and enlarged gripping surface makes it easier to hold and brush.
FIG. 6 shows one embodiment of the motion sensor as a tube 260, sealed at both ends, with a metal ball 250 inside. Two wires 270, 280 enter one end of the tube and extend just a little bit into the tube. When the tube is tilted, the metal ball 250 rolls back and forth. When the ball 250 reaches the end with the two wires and contacts the two wires, an electrical circuit is created across the wires. The motion sensor therefore behaves as an electrical switch with switch closure when the ball 250 is at one end of the tube.
Another embodiment is shown in FIG. 7, where a spring 320 is loosely fitted inside a metal cylinder 260. The spring 320 and cylinder 260 are firmly attached to a common plane at one end such that the spring 320 is not touching the walls of the cylinder 260. A first wire 310 is attached to the spring and a second wire 300 is attached to the cylinder at this fixed end. When shaken, the spring 320 at the untethered end touches the cylinder wall, creating an electrical to circuit across the two wires. The type and length of the spring and the distances of the wire and cylinder are variables that determine the amount of motion required to make the sensor function properly.
Both of these sensors are found in flashing sneakers. The ball-in-tube sensor has better directional discrimination, while the spring-in-cylinder sensor is more sensitive to any motion in any axis.
The firmware inside the microcontroller functions as follows: when no vibrations are detected, the microcontroller is in low power sleep mode. Once constant vibrations are detected, 2o the timer is started. By keeping the device in low power sleep mode until constant vibrations are detected preserves the life of the battery during the start-up time where a user wets the brush, and adds toothpaste. This time period is not counted towards the overall brushing time.
The timer advances when consistent motion is detected. During periods having little or no motion, such as when the toothbrush is placed down or is being wet, the timer is paused. When the cumulative time of motion reaches the predetermined period within an overall predetermined time interval, the indicator is activated. The rate and length of the indication can be programmed as to extend the battery life.
3o In the preferred embodiment the indicator will show the successful brushing indication for sixty (60) minutes. This allows ample time for a parent to confirm the brushing. After this "hold" period expires, the timer is reset and the microcontroller is returned to a low power sleep mode.
The period of active brushing is set for two (2) minutes according to present dental guidelines. The overall time interval within which the periods of active brushing are accumulated is approximately five (5) minutes.
An audible beeper is used to generate a short tone or melody when the brushing period has expired. This allows the user to know when to stop without looking at the visible indicator.
to The audible/visual indicator can also be used to inform the user when the toothbrush has to be replaced.
The computation of brush time and brush replacement period can be computed based on the number of times the motion sensor switch is triggered. The microprocessor can count the number of successful triggering motions and store the number in memory. Thus, a time interval of brushing can be augmented with a motion count to extend the time interval if the user is a 'lazy' brusher.
The motion sensor unit also can be used to set a minimum threshold of movement required to trigger the counting. In the ball and wire embodiment, the unit is disposed so that the motion causes the ball to roll back and forth to trigger the circuit. The weight of the ball, the length of the cylinder and the placement of the wires can be used to alter the threshold levels.
With the spring embodiment, the type of spring, number of coils, length of spring, can all be used to change the dynamics of the trigger. The threshold level will emulate the minimum activity required for adequate brushing.
The invention also incorporates a means of altering the time intervals of the toothbrush system. The user can set the total allowable time interval for measuring the active brushing periods in order to customize the system. The user can also alter the active brushing period 3o required in order to obtain a successful brushing indication. This customization increases the flexibility so the user can adapt the system to the user's lifestyle and habits.
The foregoing description of the preferred embodiment of the invention has been presented for the purpose of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed. Many modifications and variations are possible in light of the above teachings.
The invention is susceptible of many variations, all within the scope of the claims. The preferred embodiment described here and illustrated in the figures should not be construed as in any way limiting.
l0 No warranty is expressed or implied as to the actual degree of safety, security or support of any particular specimen of the invention in whole or in part, due to differences in actual production designs, materials and use of the products of the invention.
Claims (20)
1. A toothbrush timing and motion sensing system comprising a computing means, wherein said computing means has a timing means for measuring periods of active brushing, and wherein said computing means calculates a total active brushing time by adding said periods of active brushing that occur within a predetermined allowable time interval, and determines a successful brushing period when said total active brushing time exceeds a predetermined brushing time interval;
a motion sensor connected to said computing means, wherein said motion sensor detects a brushing motion, and wherein said brushing motion determines said periods of active brushing;
an indicator means for indicating completion of said successful brushing period, wherein said indicator has a means for holding said indicator means; and a power source connected to said computing means, said indicator, and said motion sensor.
a motion sensor connected to said computing means, wherein said motion sensor detects a brushing motion, and wherein said brushing motion determines said periods of active brushing;
an indicator means for indicating completion of said successful brushing period, wherein said indicator has a means for holding said indicator means; and a power source connected to said computing means, said indicator, and said motion sensor.
2. The toothbrush timing and motion sensing system according to claim 1, wherein said indicator means is a light emitting diode.
3. The toothbrush timing and motion sensing system according to claim 1, further comprising a speaker, and wherein said indicator means includes a sound indicator.
4. The toothbrush timing and motion sensing system according to claim 1, wherein said power source is a disposable battery.
5. The toothbrush timing and motion sensing system according to claim 1, wherein said power source is AC.
6. The toothbrush timing and motion sensing system according to claim 1, wherein said computing means is a microcontroller.
7. The toothbrush timing and motion sensing system according to claim 1, wherein said motion sensor is a steel ball encased within a metallic cylinder, and wherein said cylinder has a first wire and a second wire separately disposed on one end of said cylinder, and said sensor detects when said ball contacts said first and second wire.
8. The toothbrush timing and motion sensing system according to claim 1, wherein said motion sensor comprises a sealed metallic cylinder with a spring having a fixed end and a free end, wherein said spring is fixedly attached at said fixed end to a first end of said cylinder, and wherein a first wire is connected to said first end and a second wire is connected to said free end of said spring.
9. The toothbrush timing and motion sensing system according to claim 1, wherein said computing means counts each said brushing motion, and wherein said computing means determines a successful brushing period when said count exceeds a predetermined successful brushing count.
10. The toothbrush timing and motion sensing system according to claim 1, further comprising an engagable toothbrush head that engages said toothbrush handle.
11. A toothbrush timing and motion sensing system comprising a toothbrush sleeve having a handle portion on a first end and a toothbrush engaging portion on a second end, wherein electronic components are mounted in said handle portion;
a computing means, wherein said computing means has a timing means for measuring periods of active brushing, and wherein said computing means calculates a total active brushing time by adding said periods of active brushing that occur within a predetermined allowable time interval, and determines a successful brushing period when said total active brushing time exceeds a predetermined brushing time interval;
a motion sensor connected to said computing means, wherein said motion sensor detects a brushing motion, and wherein said brushing motion determines said periods of active brushing;
an indicator means for indicating completion of said successful brushing period, wherein said indicator has a means for holding said indicator means; and a power source connected to said computing means, said indicator, and said motion sensor.
a computing means, wherein said computing means has a timing means for measuring periods of active brushing, and wherein said computing means calculates a total active brushing time by adding said periods of active brushing that occur within a predetermined allowable time interval, and determines a successful brushing period when said total active brushing time exceeds a predetermined brushing time interval;
a motion sensor connected to said computing means, wherein said motion sensor detects a brushing motion, and wherein said brushing motion determines said periods of active brushing;
an indicator means for indicating completion of said successful brushing period, wherein said indicator has a means for holding said indicator means; and a power source connected to said computing means, said indicator, and said motion sensor.
12. The toothbrush timing and motion sensing system according to claim 11, wherein said handle portion has a removeable end cap.
13. The toothbrush timing and motion sensing system according to claim 11, wherein said sleeve is an elastomeric material with an easy-gripping surface.
14. The toothbrush timing and motion sensing system according to claim 11, wherein said indicator means is a light emitting diode.
15. The toothbrush timing and motion sensing system according to claim 11, further comprising a speaker, and wherein said indicator means includes a sound indicator.
16. The toothbrush timing and motion sensing system according to claim 11, wherein said motion sensor is a steel ball encased within a metallic cylinder, and wherein said cylinder has a first wire and a second wire separately disposed on one end of said cylinder, and said sensor detects when said ball contacts said first and second wire.
17. The toothbrush timing and motion sensing system according to claim 11, wherein said motion sensor comprises a sealed metallic cylinder with a spring having a fixed end and a free end, wherein said spring is fixedly attached at said fixed end to a first end of said cylinder, and wherein a first wire is connected to said first end and a second wire is connected to said free end of said spring.
18. The toothbrush timing and motion sensing system according to claim 11, wherein said computing means counts each said brushing motion, and wherein said computing means determines a successful brushing period when said count exceeds a predetermined successful brushing count.
19. A method for improving the tooth brushing process using a toothbrush with timing and motion sensing means, comprising the steps:
maintaining said toothbrush in a sleep mode when not in use;
detecting when said toothbrush is being used in a manner that triggers a motion sensor;
measuring active toothbrushing periods;
ceasing to measure said periods if said user stops using said toothbrush in a manner that triggers said motion sensor;
adding said active toothbrushing periods within a time interval to produce an total brushing period;
comparing said total brushing period to a predetermined brushing time period;
indicating a successful brushing results when said total brushing period exceeds said predetermined brushing time period;
holding said successful brushing results for a monitoring period; and resetting said system and returning to said low sleep mode.
maintaining said toothbrush in a sleep mode when not in use;
detecting when said toothbrush is being used in a manner that triggers a motion sensor;
measuring active toothbrushing periods;
ceasing to measure said periods if said user stops using said toothbrush in a manner that triggers said motion sensor;
adding said active toothbrushing periods within a time interval to produce an total brushing period;
comparing said total brushing period to a predetermined brushing time period;
indicating a successful brushing results when said total brushing period exceeds said predetermined brushing time period;
holding said successful brushing results for a monitoring period; and resetting said system and returning to said low sleep mode.
20. A method for improving the tooth brushing process according to claim 19, further comprising the step of playing an audible indication when said total brushing period exceeds said predetermined brushing time period.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10380798P | 1998-10-09 | 1998-10-09 | |
| US60/103,807 | 1998-10-09 | ||
| US28350099A | 1999-04-01 | 1999-04-01 | |
| US09/283,500 | 1999-04-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2285781A1 true CA2285781A1 (en) | 2000-04-09 |
Family
ID=31720047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2285781 Abandoned CA2285781A1 (en) | 1998-10-09 | 1999-10-08 | Toothbrush timing and motion sensing system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2285781A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103099423A (en) * | 2012-12-10 | 2013-05-15 | 张晶 | Toothbrush |
| WO2018089888A1 (en) * | 2016-11-14 | 2018-05-17 | Colgate-Palmolive Company | Oral care system and method |
-
1999
- 1999-10-08 CA CA 2285781 patent/CA2285781A1/en not_active Abandoned
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103099423A (en) * | 2012-12-10 | 2013-05-15 | 张晶 | Toothbrush |
| WO2018089888A1 (en) * | 2016-11-14 | 2018-05-17 | Colgate-Palmolive Company | Oral care system and method |
| CN108066030A (en) * | 2016-11-14 | 2018-05-25 | 高露洁-棕榄公司 | Oral care systems and method |
| RU2712406C1 (en) * | 2016-11-14 | 2020-01-28 | Колгейт-Палмолив Компани | Oral care system and method |
| AU2017356208B2 (en) * | 2016-11-14 | 2020-10-29 | Colgate-Palmolive Company | Oral care system and method |
| US10835028B2 (en) | 2016-11-14 | 2020-11-17 | Colgate-Palmolive Company | Oral care system and method |
| CN108066030B (en) * | 2016-11-14 | 2021-09-17 | 高露洁-棕榄公司 | Oral care system and method |
| US11602216B2 (en) | 2016-11-14 | 2023-03-14 | Colgate-Palmolive Company | Oral care system and method |
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