CN203074705U - Posture monitoring system - Google Patents
Posture monitoring system Download PDFInfo
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- CN203074705U CN203074705U CN 201220553751 CN201220553751U CN203074705U CN 203074705 U CN203074705 U CN 203074705U CN 201220553751 CN201220553751 CN 201220553751 CN 201220553751 U CN201220553751 U CN 201220553751U CN 203074705 U CN203074705 U CN 203074705U
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Abstract
Provided is a posture monitoring system which is suitable for being worn by a user. The posture monitoring system comprises a plurality of posture measuring units, a prompt unit and an information processing unit. The prompt unit comprises at least one earphone suitable for being worn, prompt signals comprise voice signals, and a signal input end of the earphone is connected with a signal output end of the information processing unit. When a body posture of the user wearing the posture monitoring system tilts, the information processing unit controls the earphone to send the voice signals to prompt the user to adjust the body posture. The voice signals of the earphone is controlled by the information processing unit and changes along with the tilt angles of the user. By means of the posture monitoring system, the user can adjust postures timely and accurately according to information provided by the system, thereby being good in reliability and high in universality.
Description
Technical field
This utility model relates to the electronic monitoring technical field, particularly a kind of attitude monitoring system.
Background technology
Sensation and consciousness (being designated hereinafter simply as perception) are the bases in the human knowledge world, feel to be meant that the individual attribute of objective things is by the reflection of sensory organ in human brain; Consciousness then is that objective things act on sensory organ, its various attributes in human brain through comprehensive, by means of the formed a kind of overall impression of experience in the past.Disturbance of perception refers to perception generation ANOMALOUS VARIATIONS or obvious not normal state, it is the most general wherein to belong to the spatial perception obstacle especially, its influence for the patient is also maximum, the variation that people around the spatial perception impaired patients often can't correctly be experienced or object take place at aspects such as size, orientation, distances, the patient is easy to take place when standing and walk edgewisely topple over, very dangerous, therefore, need a kind of device that disturbance of perception patient's body attitude is monitored, and when this patient has the trend of toppling over, in time the patient is reminded.
U.S.'s scientific paper " Tactile Situation Awareness System:ProprioceptiveProstheses for Sensory Deficiencies(is at sense organ disappearance person's tactilely-perceptible system) ", (AH Rupert-Aviation, space, and environmental medicine, 2000) disclose a kind of tactilely-perceptible system, this system comprises gravitational vectors measuring instrument, mechanical type tactual stimulation generator and processing unit with matching.When the wearer equips this system, the gravitational vectors measuring instrument can be measured the deflection angle of wearer's center of gravity, and this angle information is converted to signal of telecommunication input processing unit, processing unit is compared this signal and preset value, if the hidden danger that this deflection angle exists the wearer to topple over, processing unit commander tactual stimulation generator reminds the wearer to adjust the body posture of oneself to wearer's limbs dispensing tactual stimulation.But, a kind of alerting pattern of the only tactile stimulation of this tactilely-perceptible system, for the disturbance of perception person of amblyaphia, this system can't realize its purpose of design, versatility is relatively poor.
In order to increase versatility, the attitude monitoring system can be used for reference the disclosed a kind of student's reading and writing posture reminder of Chinese patent CN2101286U, and this reminiscences is made up of housing and circuit part.Housing is made of earplug head and back cover, and there is lanyard in earplug head top system, and groove is arranged in the back cover, and rear shell cover is on the earplug head.Circuit part is that range finding K switch, battery and piezoelectric ceramic piece HTD are connected in respectively on the pin of music integrated block IC.The conductive metal balls of range finding K switch is at electrode slice with have between the corner electrode sheet, and entire circuit partly is loaded in the back cover.The student adjusts the reminiscences angle by the reading and writing extreme position of bowing, and when being lower than extreme position as head, conductive metal balls is rolled, is communicated with two pole pieces, sounds, and reminds the student to rectify posture.This reminiscences utilizes sound as alerting pattern, can be in time the wearer of amblyaphia be carried out sound prompting, but if the technology of this reminiscences is directly used in the attitude monitoring system, then have following deficiency: 1. this reminiscences comes connection circuit by conductive metal balls contact conducting strip, alarm sound only has quiet and the two states of speaking, the wearer only can know that inclination has taken place the attitude of oneself, and can't know own towards which direction inclination, more can't know the degree that oneself tilts, under the situation of only wearing a reminiscences, the wearer can't in time correctly adjust the attitude of oneself according to the information that reminiscences provided; 2. conductive metal balls is freely rolled in housing under the effect of gravity, metal ball body is easy to touch conducting strip (being that non-inclination reason causes circuit turn-on) because of other external force effects such as inertia that produce of turning round of external magnetic field or human body, thereby the generation false alarm, poor reliability.
The utility model content
Technical problem to be solved in the utility model is that attitude monitoring system poor reliability of the prior art and wearer can't in time correctly adjust own attitude according to the information that this system provides, and provide a kind of wearer to come in time correctly to adjust own attitude and good reliability according to the information that system provides, the attitude monitoring system that versatility is higher.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is as follows:
A kind of attitude monitoring system is suitable for the wearer and wears, and comprising:
Some attitude measurements unit is used to measure wearer's body posture, and described attitude measurement unit places wearer's body surface;
Tip element is used for sending cue to the wearer;
Information process unit, its signal input part links to each other with the unitary signal output part of each described attitude measurement, and signal output part links to each other with the signal input part of described Tip element;
Described Tip element comprises the earphone that at least one is suitable for wearing, and described cue comprises acoustical signal, and the signal input part of described earphone is connected with the signal output part of described information process unit; When wearer's body posture run-off the straight, described information process unit is controlled the described earphone signal of sounding, and the prompting wearer adjusts the body posture of oneself; The acoustical signal of described earphone is subjected to the control of described information process unit and changes according to the angle that wearer's body tilts.
In the above-mentioned attitude monitoring system, the volume of described earphone is subjected to the control of described information process unit and is directly proportional with the angle of wearer's body inclination.
In the above-mentioned attitude monitoring system, the acoustical signal of described earphone is the intermittent sound signal, and the angle that frequency tilts along with wearer's body increases and increases.
In the above-mentioned attitude monitoring system, described earphone is one, and the built-in two kinds of acoustical signals of described information process unit comprise left-leaning prompt tone and Right deviation prompt tone, with the direction of prompting wearer inclination.
In the above-mentioned attitude monitoring system, described earphone is two, is worn on wearer's left and right sides ear respectively, and described information process unit is when wearer's body posture run-off the straight, the described earphone of control incline direction respective side or the opposition side signal of sounding, the prompting wearer adjusts the attitude of oneself.
In the above-mentioned attitude monitoring system, described earphone is two, be worn on wearer's left and right sides ear respectively, described information process unit is when wearer's body posture run-off the straight, control two described earphones signal of sounding simultaneously, the built-in two kinds of acoustical signals of described information process unit comprise left-leaning prompt tone and Right deviation prompt tone, with the direction of prompting wearer inclination.
In the above-mentioned attitude monitoring system, described Tip element also comprises two half of and right half of vibration units in a left side that are arranged at described wearer's body respectively, described cue involving vibrations signal, the signal input part of two described vibration units all is connected with the signal output part of described information process unit; Described information process unit can be when wearer's body posture run-off the straight, and the described vibration unit of control incline direction respective side or opposition side sends vibration signal, and the prompting wearer adjusts the attitude of oneself.
In the above-mentioned attitude monitoring system, the Oscillation Amplitude of described vibration unit is subjected to the control of described information process unit and is directly proportional with the angle of wearer's body inclination.
In the above-mentioned attitude monitoring system, also comprise:
Mode selecting unit is used to select the prompt modes of described Tip element, and described mode selecting unit is connected with described information process unit.
In the above-mentioned attitude monitoring system, described attitude measurement unit is the attitude gyro.
In the above-mentioned attitude monitoring system, described earphone is the white noise earphone.
Technique scheme of the present utility model has the following advantages compared to existing technology:
1. attitude monitoring system of the present utility model, comprise some attitude measurements unit, Tip element and information process unit, wherein Tip element comprises the earphone that at least one is suitable for wearing, cue comprises acoustical signal, and the signal input part of earphone is connected with the signal output part of information process unit; When wearer's body posture run-off the straight, the information process unit control earphone signal of sounding, the prompting wearer adjusts the body posture of oneself; The acoustical signal of earphone is subjected to the control of information process unit and changes according to the angle that wearer's body tilts.Such design, when the wearer's body angle change, the acoustical signal that earphone sends changes simultaneously, and the wearer can be known the degree that own body posture tilts by the difference of acoustical signal, thereby in time correctly adjusts the attitude of oneself; And earphone is subjected to the control of information process unit, extraneous magnetic field and the human body inertia that produces that turns round generally can not have influence on whole system, has reduced the possibility that false alarm takes place monitoring system in these cases, has improved the reliability of attitude monitoring system.
2. attitude monitoring system of the present utility model, the volume of earphone are subjected to the control of information process unit and are directly proportional with the angle of wearer's body inclination.Along with the wearer's body angle of inclination increases, the volume of earphone also increases, and this prompting mode causes wearer's attention by improving volume, directly effectively, points out effective.
3. attitude monitoring system of the present utility model, the acoustical signal of earphone are the intermittent sound signal, and the angle that frequency tilts along with wearer's body increases and increases.Because audition exists the wearer of obstacle can not in time perceive the variation of volume, and utilizes the change of frequency that this class wearer is reminded the scope of application that can enlarge the attitude monitoring system, has promoted the versatility of equipment.
4. attitude monitoring system of the present utility model, earphone is two, is worn on wearer's left and right sides ear respectively, and information process unit is when wearer's body posture run-off the straight, the earphone of control incline direction respective side or the opposition side signal of sounding, the prompting wearer adjusts the attitude of oneself.Such design, the direction that can remind the wearer to tilt intuitively reduces the wearer and thinks deeply the time of reaction, thereby the wearer can be in a short period of time in time adjusted self attitude, has promoted the effect of attitude monitoring system.
5. attitude monitoring system of the present utility model, also comprise two half of and right half of vibration units in a left side that are arranged at wearer's body respectively, cue involving vibrations signal, the signal input part of two vibration units all are connected with the signal output part of information process unit; Information process unit can be when wearer's body posture run-off the straight, and the vibration unit of control incline direction respective side or opposition side sends vibration signal, and the prompting wearer adjusts the attitude of oneself.Such design, cue comprise acoustical signal and vibration signal simultaneously, and for the wearer of dysaudia, vibration signal can play prompting wearer's effect, has promoted the versatility and the result of use of attitude monitoring system.
6. attitude monitoring system of the present utility model also comprises mode selecting unit, is used to select the prompt modes of Tip element, and mode selecting unit is connected with information process unit.Such design, wearer or other people can be as required, and the signal that selects a sound, vibration signal or two kinds of signals have promoted the versatility and the result of use of attitude monitoring system together as prompt modes.
7. attitude monitoring system of the present utility model, earphone are the white noise earphone.The penetration capacity of white noise can reflect by force and not, is more prone to cause wearer's attention as the auditory tone cues signal, has promoted the prompting effect of attitude monitoring system.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, according to specific embodiment of the utility model also in conjunction with the accompanying drawings, this utility model is described in further detail, wherein below
Fig. 1 is the theory diagram of this utility model embodiment one;
Fig. 2 is the theory diagram of this utility model embodiment two;
Fig. 3 is the theory diagram of this utility model embodiment three;
Fig. 4 is the theory diagram of this utility model embodiment four.
Reference numeral is expressed as among the figure: 1-Tip element, 11-earphone, 12-vibration unit, 2-information process unit, 3-attitude gyro, 4-mode selecting unit.
The specific embodiment
Embodiment one
As shown in Figure 1, it is the preferred embodiment of this utility model attitude monitoring system, described attitude monitoring system is a kind of life auxiliary device, being suitable for the wearer wears, in the present embodiment, described attitude monitoring system comprises some attitude measurements unit, Tip element 1, information process unit 2 and mode selecting unit 4.
The body surface that described attitude measurement unit is used to measure wearer's body posture and places the wearer, in the present embodiment, described attitude measurement unit is an attitude gyro 3, and the unitary number of described attitude measurement is one, and described attitude gyro 3 is arranged on wearer's back.
The signal input part of described information process unit 2 links to each other with the unitary signal output part of each described attitude measurement, and the signal output part of described information process unit 2 links to each other with the signal input part of described Tip element 1.
Described Tip element 1 is used for sending cue to the wearer, described Tip element 1 comprises at least one earphone that is suitable for wearing 11 and two half of and right half of vibration units 12 in a left side that are arranged at described wearer's body respectively, the signal input part of described earphone 11 and two described vibration units 12 all is connected with the signal output part of described information process unit 2, and described cue comprises acoustical signal and vibration signal.In the present embodiment, the number of described earphone 11 is two, is worn on wearer's left and right sides ear respectively.Further, described earphone 11 is the white noise earphone.Described information process unit 2 can be when wearer's body posture run-off the straight, and the described vibration unit 12 of control incline direction respective side or opposition side sends vibration signal, and the prompting wearer adjusts the attitude of oneself.The Oscillation Amplitude of described vibration unit 12 is subjected to the control of described information process unit 2 and is directly proportional with the angle of wearer's body inclination.
Described mode selecting unit 4 is used to select the prompt modes of described Tip element 1, and described mode selecting unit 4 is connected with described information process unit 2.
The job step of described attitude monitoring system is as follows:
1. model selection: wearer or other people can be by the described mode selecting unit 4 of operation, select the prompt modes of described Tip element 1, in the present embodiment, described prompt modes comprises acoustical signal prompt modes, vibration signal prompt modes and mixed signal prompt modes (being the pattern that acoustical signal and vibration signal are pointed out the wearer simultaneously);
2. monitoring, monitor in real time to the attitude situation of wearer's body each described attitude measurement unit, and monitoring result is real-time transmitted to described information process unit 2, in the present embodiment, monitor in real time by the attitude situation of 3 pairs of wearer's body of described attitude gyro;
3. information processing, described information process unit 2 gathers the unitary monitoring result of each described attitude measurement, calculate the inclination angle beta of wearer's attitude, and inclination angle beta and predetermined angle α (absolute value of α is more than or equal to 0 degree) compared, when wearer's body posture run-off the straight, be inclination angle beta more than or equal to predetermined angle α, the described Tip element of described information process unit 2 controls reminds the wearer to adjust the attitude of oneself.In the present embodiment, when wearer's body posture run-off the straight, described information process unit 2 is controlled the described earphone 11 of incline direction respective side or opposition side and described vibration unit 12 sound signal and vibration signal respectively, and the prompting wearer adjusts the attitude of oneself;
4. prompting, the Oscillation Amplitude of the acoustical signal of described earphone 11 and described vibration unit 12 all is subjected to the control of described information process unit 2 and changes according to the angle that wearer's body tilts, in the present embodiment, the acoustical signal of described earphone 11 is the intermittent sound signal, and the angle that frequency tilts along with wearer's body increases and increases.The wearer is by the variation of the cue of the described Tip element 1 of perception, and active adjustment is carried out to self human body attitude in cognitive self angle of inclination.
Embodiment two
As shown in Figure 2, be another embodiment of the present utility model.
Different with embodiment one is, in the present embodiment, the unitary number of described attitude measurement is two, and two described attitude gyros 3 are separately positioned on wearer's back and waist.And in the present embodiment, described information process unit 2 built-in two kinds of acoustical signals comprise left-leaning prompt tone and Right deviation prompt tone, with the direction of prompting wearer inclination.When wearer's body posture run-off the straight, two described earphones 11 of described information process unit 2 controls send left-leaning prompt tone (or Right deviation prompt tone) simultaneously, and the described vibration unit 12 of control incline direction respective side or opposition side sends vibration signal, and the prompting wearer adjusts the attitude of oneself.
Different with embodiment one, in the present embodiment, the acoustical signal of described earphone 11 is a continuous signal, and the volume of described earphone 11 is subjected to the control of described information process unit 2 and is directly proportional with the angle of wearer's body inclination.
Embodiment three
As shown in Figure 3, be another embodiment of the present utility model.
Different with embodiment one, in the present embodiment, described earphone 11 is one, and described information process unit 2 built-in two kinds of acoustical signals comprise left-leaning prompt tone and Right deviation prompt tone, with the direction of prompting wearer inclination.When wearer's body posture run-off the straight, the described earphone 11 of described information process unit 2 controls sends left-leaning prompt tone (or Right deviation prompt tone), and the described vibration unit 12 of control incline direction respective side or opposition side sends vibration signal, and the prompting wearer adjusts the attitude of oneself.
Different with embodiment one, in the present embodiment, the acoustical signal of described earphone 11 is a continuous signal, and the volume of described earphone 11 is subjected to the control of described information process unit 2 and is directly proportional with the angle of wearer's body inclination.
Embodiment four
As shown in Figure 4, be another embodiment of the present utility model.
Different with embodiment one, in the present embodiment, described Tip element 1 does not comprise described vibration unit 12, and correspondingly, described attitude monitoring system does not comprise mode selecting unit 4.
The job step of described attitude monitoring system is as follows:
1. monitoring, monitor in real time to the attitude situation of wearer's body each described attitude measurement unit, and monitoring result is real-time transmitted to described information process unit 2, in the present embodiment, monitor in real time by the attitude situation of 3 pairs of wearer's body of described attitude gyro;
2. information processing, described information process unit 2 gathers the unitary monitoring result of each described attitude measurement, calculate the inclination angle beta of wearer's attitude, and inclination angle beta and predetermined angle α (absolute value of α is more than or equal to 0 degree) compared, when wearer's body posture run-off the straight, inclination angle beta is more than or equal to predetermined angle α, and the described Tip element of described information process unit 2 controls reminds the wearer to adjust the attitude of oneself.In the present embodiment, when wearer's body posture run-off the straight, the described earphone 11 of described information process unit 2 control incline direction respective side or the opposition side signal of sounding, the prompting wearer adjusts the attitude of oneself;
3. prompting, the acoustical signal of described earphone 11 is subjected to the control of described information process unit 2 and changes according to the angle that wearer's body tilts, in the present embodiment, the acoustical signal of described earphone 11 is the intermittent sound signal, and the angle that frequency tilts along with wearer's body increases and increases.The wearer is by the variation of the cue of the described Tip element 1 of perception, and active adjustment is carried out to self human body attitude in cognitive self angle of inclination.
In other embodiments, described attitude measurement unit further is inclination sensor, angular acceleration transducer etc., as long as can measure wearer's body posture, can realize the purpose of this utility model.
In other embodiments, the number of described vibration unit 12 can also be four, six or eight, and described vibration unit 12 can be arranged on half of and right one side of something in a left side of wearer's body symmetrical or asymmetricly.
In other embodiments, described earphone 11 can also be a common headphones, and corresponding, described acoustical signal also can be common acoustical signal.Compare with the white noise earphone, the cost of common headphones is lower.
In other embodiments, the angle that the Oscillation Amplitude of the frequency of the volume of continuous acoustical signal or intermittent sound signal and described vibration unit 12 can also be selected to be designed to tilt with wearer's body in the described earphone 11 is inversely proportional to.
Obviously, the foregoing description only is for example clearly is described, and is not the qualification to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among the protection domain of this utility model creation.
Claims (10)
1. an attitude monitoring system is suitable for the wearer and wears, and comprising:
Some attitude measurements unit is used to measure wearer's body posture, and described attitude measurement unit places wearer's body surface;
Tip element (1) is used for sending cue to the wearer;
Information process unit (2), its signal input part links to each other with the unitary signal output part of each described attitude measurement, and signal output part links to each other with the signal input part of described Tip element (1);
It is characterized in that: described Tip element (1) comprises at least one earphone that is suitable for wearing (11), and described cue comprises acoustical signal, and the signal input part of described earphone (11) is connected with the signal output part of described information process unit (2); When wearer's body posture run-off the straight, described information process unit (2) is controlled described earphone (11) signal of sounding, and the prompting wearer adjusts the body posture of oneself; The acoustical signal of described earphone (11) is subjected to the control of described information process unit (2) and changes according to the angle that wearer's body tilts.
2. attitude monitoring system according to claim 1 is characterized in that: the volume of described earphone (11) is subjected to the control of described information process unit (2) and is directly proportional with the angle of wearer's body inclination.
3. attitude monitoring system according to claim 1 and 2 is characterized in that: described earphone (11) is one.
4. attitude monitoring system according to claim 1 and 2, it is characterized in that: described earphone (11) is two, be worn on wearer's left and right sides ear respectively, described information process unit (2) is when wearer's body posture run-off the straight, the described earphone (11) of control incline direction respective side or the opposition side signal of sounding, the prompting wearer adjusts the attitude of oneself.
5. attitude monitoring system according to claim 1 and 2, it is characterized in that: described earphone (11) is two, be worn on wearer's left and right sides ear respectively, described information process unit (2) is when wearer's body posture run-off the straight, control two described earphones (11) signal of sounding simultaneously, the built-in two kinds of acoustical signals of described information process unit (2) comprise left-leaning prompt tone and Right deviation prompt tone, with the direction of prompting wearer inclination.
6. attitude monitoring system according to claim 1 and 2, it is characterized in that: described Tip element (1) also comprises two half of and right half of vibration units (12) in a left side that are arranged at described wearer's body respectively, described cue involving vibrations signal, the signal input part of two described vibration units (12) all are connected with the signal output part of described information process unit (2); Described information process unit (2) can be when wearer's body posture run-off the straight, and the described vibration unit (12) of control incline direction respective side or opposition side sends vibration signal, and the prompting wearer adjusts the attitude of oneself.
7. attitude monitoring system according to claim 6 is characterized in that: the Oscillation Amplitude of described vibration unit (12) is subjected to the control of described information process unit (2) and is directly proportional with the angle of wearer's body inclination.
8. attitude monitoring system according to claim 7 is characterized in that, also comprises:
Mode selecting unit (4) is used to select the prompt modes of described Tip element (1), and described mode selecting unit (4) is used to select the pattern of described cue, and described mode selecting unit (4) is connected with described information process unit (2).
9. attitude monitoring system according to claim 8 is characterized in that: described attitude measurement unit is attitude gyro (3).
10. attitude monitoring system according to claim 9 is characterized in that: described earphone (11) is the white noise earphone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220553751 CN203074705U (en) | 2012-10-26 | 2012-10-26 | Posture monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220553751 CN203074705U (en) | 2012-10-26 | 2012-10-26 | Posture monitoring system |
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| CN203074705U true CN203074705U (en) | 2013-07-24 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102973274A (en) * | 2012-10-26 | 2013-03-20 | 中国人民解放军空军航空医学研究所 | Posture monitoring system |
| CN103617708A (en) * | 2013-12-06 | 2014-03-05 | 曹志国 | Intelligent posture correction reminding method |
| CN107548560A (en) * | 2015-03-11 | 2018-01-05 | 霍尼韦尔国际公司 | It is automatically turned on and closes the system and method for the equipment of the accurate recording for personal voice exposure measurement |
| CN110493471A (en) * | 2019-08-28 | 2019-11-22 | 重庆医药高等专科学校 | One kind is corrected sitting posture pre- myopia prevention system and method based on intelligent mobile terminal |
-
2012
- 2012-10-26 CN CN 201220553751 patent/CN203074705U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102973274A (en) * | 2012-10-26 | 2013-03-20 | 中国人民解放军空军航空医学研究所 | Posture monitoring system |
| CN103617708A (en) * | 2013-12-06 | 2014-03-05 | 曹志国 | Intelligent posture correction reminding method |
| CN107548560A (en) * | 2015-03-11 | 2018-01-05 | 霍尼韦尔国际公司 | It is automatically turned on and closes the system and method for the equipment of the accurate recording for personal voice exposure measurement |
| CN107548560B (en) * | 2015-03-11 | 2020-05-12 | 霍尼韦尔国际公司 | System and method for automatically turning on and off a device for accurate recording of personal sound exposure measurements |
| CN110493471A (en) * | 2019-08-28 | 2019-11-22 | 重庆医药高等专科学校 | One kind is corrected sitting posture pre- myopia prevention system and method based on intelligent mobile terminal |
| CN110493471B (en) * | 2019-08-28 | 2021-05-14 | 重庆医药高等专科学校 | Sitting posture correction myopia prevention system and method based on intelligent mobile terminal |
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Granted publication date: 20130724 Termination date: 20131026 |