CN104777525A - Method and system for detecting whether person exists on bed based on pressure sensor - Google Patents
Method and system for detecting whether person exists on bed based on pressure sensor Download PDFInfo
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- CN104777525A CN104777525A CN201410014642.7A CN201410014642A CN104777525A CN 104777525 A CN104777525 A CN 104777525A CN 201410014642 A CN201410014642 A CN 201410014642A CN 104777525 A CN104777525 A CN 104777525A
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Abstract
The invention provides a method and system for detecting whether a person exists on a bed based on a pressure sensor. According to the method disclosed by the invention, firstly, a reference empty bed value sensed and measured by the pressure sensor is sampled and recorded, and then based on the present value sensed and measured by the pressure sensor and the reference empty bed value, the situation whether a person exists on the bed is determined. The method is simple and easy to implement, and the behavior that special people such as patients leave the bed can be effectively monitored.
Description
Technical field
The present invention relates to monitoring field, particularly relate to and a kind ofly detect the method and system whether bed having people based on pressure transducer.
Background technology
Sensor (transducer/sensor) is as a kind of pick-up unit, measured information can be experienced, and the information that can will experience, the information being for conversion into electric signal or other desired forms according to certain rules exports, to meet the requirements such as the transmission of information, process, storage, display, record and control, it is the primary link realizing automatically detecting and automatically controlling.
Common sensor has: resistance sensor, variable-frequency power sensor, LOAD CELLS, resistance strain type sensor, piezoresistive transducer, thermal resistance sensor, laser sensor, Hall element, temperature sensor, radio temperature sensor, intelligent sensor, light sensor, biology sensor, vision sensor, displacement transducer, pressure transducer, ultrasound distance sensor, integrated temperature sensor, liquid level sensor, vacuum sensor, capacitance object position sensor, antimony electrode acidity sensor, acid, alkali, salinity sensor, conductivity sensor etc.Wherein, pressure transducer is a kind of sensor the most conventional in industrial practice, it mainly utilizes piezoelectric effect manufacture to form, and can be widely used in numerous industries such as water conservancy and hydropower, railway traffic, intelligent building, production automatic control, Aero-Space, military project, petrochemical industry, oil well, electric power, boats and ships, lathe, pipeline.
Such as, be in the Chinese patent literature of 200810190826.3 at application number, disclose a kind of pressure transducer be applied in vehicle stabilization control device.The wiring board that this pressure transducer is included in electronic control panel is formed and comprise press-fit terminal contact terminal, slidably with contact the compression-style fittings of press-fit terminal and the spring being connected compression-style fittings and press-fit terminal movably.This pressure transducer is arranged in hydraulic pressure unit and with the wiring board of electronic control unit and contacts to sense braking oil pressure.
Again such as, be in the Chinese patent literature of 200980145116.1 at application number, disclose a kind of pressure transducer.This pressure transducer has: the pressure chamber with a little opening and a big uncork, the pressure sensor with pressure receiving plane and diaphragm; This diaphragm closes described big uncork; The described pressure receiving plane of this pressure sensor closes described little opening; This pressure transducer is suitable as the air bag sensor of vehicle.
But, how based on pressure transducer monitoring from bed behavior specific crowds such as patients, become those skilled in the art's technical issues that need to address.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide and a kind ofly detect the method and system whether bed having people based on pressure transducer.
For achieving the above object and other relevant objects, the invention provides and a kind ofly detect the method whether bed having people based on pressure transducer, it at least comprises:
Sample and record that pressure transducer senses with reference to empty bed value;
The currency sensed based on described pressure transducer and describedly determine whether bed has people with reference to empty bed value.
Preferably, whether described detection on bed based on pressure transducer has the method for people also to comprise: the quiescent value that described pressure transducer of sampling senses, and judges whether described pressure transducer exists fault based on described quiescent value.
Preferably, whether described detection on bed based on pressure transducer has the method for people also to comprise: by the empty bed value selecting multiple duration to exceed predetermined threshold in predetermined amount of time, and based on selected go out those empty bed values revise described with reference to empty bed value; More preferably, described predetermined amount of time is 24 hours.
Preferably, every predetermined space, the value that described pressure transducer senses is sampled.
The present invention also provides a kind of and detects the detection system whether bed having people based on pressure transducer, and it at least comprises:
Logging modle, for sample and record that pressure transducer senses with reference to empty bed value;
Judge module, for the currency that senses based on described pressure transducer and describedly determine whether bed has people with reference to empty bed value.
Preferably, whether described detection on bed based on pressure transducer has the detection system of people also to comprise: fault determination module, for the quiescent value that described pressure transducer of sampling senses, and judge whether described pressure transducer exists fault based on described quiescent value.
Preferably, whether described detection on bed based on pressure transducer has the detection system of people also to comprise: correcting module, for by the empty bed value selecting multiple duration to exceed predetermined threshold in predetermined amount of time, and based on selected go out those empty bed values revise described with reference to empty bed value; More preferably, described predetermined amount of time is 24 hours.
As mentioned above, of the present inventionly detect the method and system whether bed having people based on pressure transducer, there is following beneficial effect: be simple and easy to execute, can effective monitoring patient wait specific crowd from bed behavior, guarantee the safety of such crowd.
Accompanying drawing explanation
Fig. 1 is shown as the process flow diagram detecting the method whether bed having people based on pressure transducer of the present invention.
Fig. 2 is shown as and of the present inventionly detects the detection system schematic diagram whether bed having people based on pressure transducer.
Element numbers explanation
1 detection system
11 logging modles
12 judge modules
S1 ~ S2 step
Embodiment
Below by way of specific instantiation, embodiments of the present invention are described, those skilled in the art the content disclosed by this instructions can understand other advantages of the present invention and effect easily.The present invention can also be implemented or be applied by embodiments different in addition, and the every details in this instructions also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present invention.
Refer to Fig. 1 and Fig. 2.It should be noted that, the diagram provided in the present embodiment only illustrates basic conception of the present invention in a schematic way, then only the assembly relevant with the present invention is shown in graphic but not component count, shape and size when implementing according to reality is drawn, it is actual when implementing, and the kenel of each assembly, quantity and ratio can be a kind of change arbitrarily, and its assembly layout kenel also may be more complicated.
As shown in Figure 1, the invention provides and a kind ofly detect the method whether bed having people based on pressure transducer.Wherein, method according to the present invention has been come mainly through the detection system in computer equipment, and this detection system to include but not limited to be arranged in computer equipment and can realize the such as application module, operating system, processing controller etc. of the present invention program.Wherein, this computer equipment includes but not limited to: personal computer, server etc.
In step sl, described detection system sample and record that pressure transducer senses with reference to empty bed value.
Wherein, described with reference to empty bed value be pressure transducer is installed bed on be placed with the things such as bed board mattress after, the value that this pressure transducer senses.
Particularly, the empty bed value that described detection system senses every predetermined space sampled pressure sensor, and determine with reference to empty bed value based on the empty bed value of sampling in a period of time; Wherein, described predetermined space can be determined based on actual, such as, and 5 seconds, 1 second etc.
Such as, described detection system based on the mean value of the empty bed value of sampling in a period of time as with reference to empty bed value.
Again such as, described detection system is based in the empty bed value of sampling in a period of time, and frequency of occurrences soprano is as with reference to empty bed value.
In step s 2, the currency that senses based on described pressure transducer of described detection system and describedly determine whether bed has people with reference to empty bed value.
Particularly, the currency that described pressure transducer senses by described detection system and describedly to compare with reference to empty bed value, when described currency and the described difference with reference to empty bed value exceed predetermined difference value threshold value, then judges that bed has people, otherwise judges on bed unmanned; Wherein, described detection system can determine based on judged result repeatedly whether bed has people.
Wherein, described predetermined difference value threshold value sets based on practical situation, and such as, for monitoring on cot whether have people, then described predetermined difference value threshold value is no more than 15 jin usually; Again such as, on the bed of monitoring adult, whether have people, then described predetermined difference value threshold value is no more than 30 kilograms etc. usually.
Such as, described detection system to be sampled the currency that described pressure transducer senses every predetermined space, and by each currency and describedly to compare with reference to empty bed value, if in continuous 1 minute, currency that each sampling obtains and describedly to compare with reference to empty bed value, judged result has been people, then determine that bed has people.
As a kind of optimal way, method of the present invention also comprises step S0.
In step so), described detection system is sampled the quiescent value that described pressure transducer senses, and judges whether described pressure transducer exists fault based on described quiescent value.
Wherein, described quiescent value be pressure transducer is installed bed on when not placing the things such as bed board mattress, the value that this pressure transducer senses.
Particularly, the quiescent value that described detection system sampled pressure sensor senses, if this quiescent value is 0, then determines that this pressure transducer breaks down.
As a kind of optimal way, method of the present invention also comprises step S3.
In step s3, described detection system by the empty bed value selecting multiple duration to exceed predetermined threshold in predetermined amount of time, and based on selected go out those empty bed values revise described with reference to empty bed value.
Wherein, described predetermined amount of time is preferably 24 hours.
Such as, the value that when described detection system to add up in 24 hours this days on all beds nobody every day, described pressure transducer senses, then picks out the numerical value of duration more than 5 minutes and assembles one group of data; Calculate the mean value of these group data subsequently, finally using this mean value as with reference to empty bed value.
Under pressure transducer is crushed on cabinet base for a long time, it likely becomes more and more responsive, and measured value is likely increasing, so described detection system is ceaselessly revised with reference to empty bed value every day; Usually, this with reference to empty bed value can be milder slowly become large along with the time.
As shown in Figure 2, the invention provides and a kind ofly detect the detection system whether bed having people based on pressure transducer.Wherein, this detection system 1 at least comprises: logging modle 11 and judge module 12.
Described logging modle 11 sample and record that pressure transducer senses with reference to empty bed value.
Wherein, described with reference to empty bed value be pressure transducer is installed bed on be placed with the things such as bed board mattress after, the value that this pressure transducer senses.
Particularly, the empty bed value that described logging modle 11 senses every predetermined space sampled pressure sensor, and determine with reference to empty bed value based on the empty bed value of sampling in a period of time; Wherein, described predetermined space can be determined based on actual, such as, and 5 seconds, 1 second etc.
Such as, described logging modle 11 based on the mean value of the empty bed value of sampling in a period of time as with reference to empty bed value.
Again such as, described logging modle 11 is based in the empty bed value of sampling in a period of time, and frequency of occurrences soprano is as with reference to empty bed value.
The currency that described judge module 12 senses based on described pressure transducer and describedly determine whether bed has people with reference to empty bed value.
Particularly, the currency that described pressure transducer senses by described judge module 12 and describedly to compare with reference to empty bed value, when described currency and the described difference with reference to empty bed value exceed predetermined difference value threshold value, then judge that bed has people, otherwise judge on bed unmanned; Wherein, described judge module 12 can determine based on judged result repeatedly whether bed has people.
Wherein, described predetermined difference value threshold value sets based on practical situation, and such as, for monitoring on cot whether have people, then described predetermined difference value threshold value is no more than 15 jin usually; Again such as, on the bed of monitoring adult, whether have people, then described predetermined difference value threshold value is no more than 30 kilograms etc. usually.
Such as, described judge module 12 to be sampled the currency that described pressure transducer senses every predetermined space, and by each currency and describedly to compare with reference to empty bed value, if in continuous 1 minute, currency that each sampling obtains and describedly to compare with reference to empty bed value, judged result has been people, then determine that bed has people.
As a kind of optimal way, described detection system 1 also comprises: fault determination module.
Described fault determination module is sampled the quiescent value that described pressure transducer senses, and judges whether described pressure transducer exists fault based on described quiescent value.
Wherein, described quiescent value be pressure transducer is installed bed on when not placing the things such as bed board mattress, the value that this pressure transducer senses.
Particularly, the quiescent value that described fault determination module sampled pressure sensor senses, if this quiescent value is 0, then determines that this pressure transducer breaks down.
As a kind of optimal way, this described detection system 1 also comprises: correcting module.
Described correcting module by the empty bed value selecting multiple duration to exceed predetermined threshold in predetermined amount of time, and based on selected go out those empty bed values revise described with reference to empty bed value.
Wherein, described predetermined amount of time is preferably 24 hours.
Such as, the value that when described correcting module to add up in 24 hours this days on all beds nobody every day, described pressure transducer senses, then picks out the numerical value of duration more than 5 minutes and assembles one group of data; Calculate the mean value of these group data subsequently, finally using this mean value as with reference to empty bed value.
Under pressure transducer is crushed on cabinet base for a long time, it likely becomes more and more responsive, and measured value is likely increasing, so described correcting module is ceaselessly revised with reference to empty bed value every day; Usually, this with reference to empty bed value can be milder slowly become large along with the time.
In sum, whether to detect bed on have the method and system of people can realize specific crowd, such as, the child on hospital bed, old man etc. monitor from bed behavior if the present invention is based on pressure transducer, guarantees the safety etc. of those crowds.So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (9)
1. detect the method whether bed having people based on pressure transducer, it is characterized in that, whether described detection on bed based on pressure transducer has the method for people at least to comprise:
Sample and record that pressure transducer senses with reference to empty bed value;
The currency sensed based on described pressure transducer and describedly determine whether bed has people with reference to empty bed value.
2. according to claim 1ly detect the method whether bed having people based on pressure transducer, characterized by further comprising: the quiescent value that described pressure transducer of sampling senses, and judge whether described pressure transducer exists fault based on described quiescent value.
3. according to claim 1ly detect the method whether bed having people based on pressure transducer, characterized by further comprising: by the empty bed value selecting multiple duration to exceed predetermined threshold in predetermined amount of time, and based on selected go out those empty bed values revise described with reference to empty bed value.
4. according to claim 3ly detect the method whether bed having people based on pressure transducer, it is characterized in that: described predetermined amount of time is 24 hours.
5. according to claim 1ly detect the method whether bed having people based on pressure transducer, it is characterized in that: every predetermined space, the value that described pressure transducer senses is sampled.
6. detect the detection system whether bed having people based on pressure transducer, it is characterized in that, whether described detection on bed based on pressure transducer has the detection system of people at least to comprise:
Logging modle, for sample and record that pressure transducer senses with reference to empty bed value;
Judge module, for the currency that senses based on described pressure transducer and describedly determine whether bed has people with reference to empty bed value.
7. according to claim 6ly detect the detection system whether bed having people based on pressure transducer, characterized by further comprising:
Based on described quiescent value, fault determination module, for the quiescent value that described pressure transducer of sampling senses, and judges whether described pressure transducer exists fault.
8. according to claim 6ly detect the detection system whether bed having people based on pressure transducer, characterized by further comprising: correcting module, for by the empty bed value selecting multiple duration to exceed predetermined threshold in predetermined amount of time, and based on selected go out those empty bed values revise described with reference to empty bed value.
9. according to claim 8ly detect the detection system whether bed having people based on pressure transducer, it is characterized in that: described predetermined amount of time is 24 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410014642.7A CN104777525A (en) | 2014-01-13 | 2014-01-13 | Method and system for detecting whether person exists on bed based on pressure sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410014642.7A CN104777525A (en) | 2014-01-13 | 2014-01-13 | Method and system for detecting whether person exists on bed based on pressure sensor |
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| CN104777525A true CN104777525A (en) | 2015-07-15 |
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| CN201410014642.7A Pending CN104777525A (en) | 2014-01-13 | 2014-01-13 | Method and system for detecting whether person exists on bed based on pressure sensor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106941711A (en) * | 2016-01-04 | 2017-07-11 | ***通信集团公司 | Method, the device of a kind of base station and base station energy-saving with detecting user |
| CN106963166A (en) * | 2017-03-30 | 2017-07-21 | 南京信息工程大学 | A kind of adaptively changing and the intelligent bed and its method of work of carrier contact portion stress |
| CN107170071A (en) * | 2017-05-10 | 2017-09-15 | 安庆师范大学 | Games timing method based on pressure sensor |
| CN108095728A (en) * | 2017-12-14 | 2018-06-01 | 南通大学 | The unexpected of survey is sentenced based on self-adaptive pressure and nurses equipment from bed |
| CN108670592A (en) * | 2018-05-29 | 2018-10-19 | 利辛县风雅颂机电科技有限公司 | A kind of rescue ambulance of automatic recycling sick bed and disinfection |
| CN114295283A (en) * | 2021-12-13 | 2022-04-08 | 深圳数联天下智能科技有限公司 | Piezoelectric sensor fault detection method, device, equipment and medium |
| CN115024615A (en) * | 2022-06-29 | 2022-09-09 | 慕思健康睡眠股份有限公司 | User state sensing method and device, intelligent mattress and storage medium |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106941711A (en) * | 2016-01-04 | 2017-07-11 | ***通信集团公司 | Method, the device of a kind of base station and base station energy-saving with detecting user |
| CN106963166A (en) * | 2017-03-30 | 2017-07-21 | 南京信息工程大学 | A kind of adaptively changing and the intelligent bed and its method of work of carrier contact portion stress |
| CN107170071A (en) * | 2017-05-10 | 2017-09-15 | 安庆师范大学 | Games timing method based on pressure sensor |
| CN108095728A (en) * | 2017-12-14 | 2018-06-01 | 南通大学 | The unexpected of survey is sentenced based on self-adaptive pressure and nurses equipment from bed |
| CN108095728B (en) * | 2017-12-14 | 2020-06-05 | 南通大学 | Accidental bed-leaving nursing equipment based on self-adaptive pressure judgment and measurement |
| CN108670592A (en) * | 2018-05-29 | 2018-10-19 | 利辛县风雅颂机电科技有限公司 | A kind of rescue ambulance of automatic recycling sick bed and disinfection |
| CN114295283A (en) * | 2021-12-13 | 2022-04-08 | 深圳数联天下智能科技有限公司 | Piezoelectric sensor fault detection method, device, equipment and medium |
| CN115024615A (en) * | 2022-06-29 | 2022-09-09 | 慕思健康睡眠股份有限公司 | User state sensing method and device, intelligent mattress and storage medium |
| CN115024615B (en) * | 2022-06-29 | 2023-08-15 | 慕思健康睡眠股份有限公司 | User state sensing method and device, intelligent mattress and storage medium |
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Application publication date: 20150715 |