CN102488522A - Human body sitting posture detecting system based on Zigbee acceleration sensing network and human body sitting posture detecting method - Google Patents

Human body sitting posture detecting system based on Zigbee acceleration sensing network and human body sitting posture detecting method Download PDF

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Publication number
CN102488522A
CN102488522A CN2011103736545A CN201110373654A CN102488522A CN 102488522 A CN102488522 A CN 102488522A CN 2011103736545 A CN2011103736545 A CN 2011103736545A CN 201110373654 A CN201110373654 A CN 201110373654A CN 102488522 A CN102488522 A CN 102488522A
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human body
sitting posture
zigbee
axis acceleration
zigbee network
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宁磊
乔宁
姜开元
杨明川
梁东宇
王伟
王振永
郭庆
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Harbin Institute of Technology
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Harbin Institute of Technology
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Abstract

A human body sitting posture detecting system based on a Zigbee acceleration sensing network and a human body sitting posture detecting method relate to human body sitting posture detecting system and detecting method, and aim to solve the problems of the conventional human body sitting posture detecting and correcting system such as low intelligent degree, and poor flexibility because people need to wear detecting and correcting equipment. In the detecting system, data acquired by a triaxial acceleration sensor is emitted to a Zigbee network through a Zigbee network emitter, a Zigbee network receiver receives the data and converts the data into an inclined angle through an upper computer, and a human body sitting posture detection result is obtained through judging the inclined angle based on a preset threshold. When the system is used, the triaxial acceleration sensor and the Zigbee network emitter are fixed on a to-be-detected human body and in the same height with shoulders, then the detection can be realized through the Zigbee network, and the intelligent degree is high; meanwhile, the triaxial acceleration sensor and the Zigbee network emitter are small in size and light in weight, so that the detecting system flexibility is high. The invention is suitable for human body sitting posture detection.

Description

Human body sitting posture detection system and detection method based on Zigbee acceleration sensing network
Technical field
The present invention relates to human body sitting posture detection system and detection method.
Background technology
Along with popularizing of the development of information technology, the Internet; Increasing operating type becomes current remote control by previous do-it-yourself, people be sitting in a computer that connects network just can accomplish such as instant message browse, shopping online, remote monitoring, the strange land exchanges and through individual PC completion such as operations such as thesis writing, graphic plotting, science calculating.No matter be in such information huge explosion epoch, be various official documents and correspondence staff or adolescent student, and they also will bend over one's desk working for a long time, learn after utilizing computer.So, because symptoms such as the hunchback that abnormal sitting posture really causes, cervical spondylosis, scapulohumeral periarthritis, xerophthalmia, myopia are brought increasing puzzlement to people.Therefore, the probability that corrects a mistake promptly sitting posture and keep correct sitting posture to take place with reduction such as diseases such as hunchback, or alleviating the misery of being brought by these diseases is the problem demanding prompt solution that current society faces.
At present, the motility and the intelligent level of sitting posture corrective system are lower, and heavy study and work task makes people have no time to wear the calibration equipment of complicated operation again of thick and heavy while.The raising of the microminiaturization of wireless singlechip and pick off, low power consumption technology; And virtual instrument technique universal make the design of sitting posture corrective system be able to towards portable, low-cost, intelligentized direction develops, and is the optimum selection of intelligent sitting posture corrective system.
Summary of the invention
The present invention is that existing human body sitting posture gesture detects and the intelligent degree of corrective system is low and cause the problem of very flexible owing to wearing detection and calibration equipment in order to solve, thereby a kind of human body sitting posture detection system and detection method based on Zigbee acceleration sensing network is provided.
Based on the human body sitting posture detection system of Zigbee acceleration sensing network, it comprises 3-axis acceleration sensor, Zigbee network emitter, Zigbee network receiver and host computer, and 3-axis acceleration sensor is connected through lead with Zigbee network emitter; The 3-axis acceleration signal output part of 3-axis acceleration sensor is connected with the 3-axis acceleration signal input part of Zigbee network emitter; The signal transmitting terminal of Zigbee network emitter is through the signal receiving end wireless connections of Zigbee network and Zigbee network receiver; The 3-axis acceleration signal output part of Zigbee network receiver is connected with the 3-axis acceleration signal input part of host computer.
3-axis acceleration sensor in the said system is fixed on the position more than the chest of human body to be detected, start-up system then, said human body sitting posture detection method is realized by following steps:
Step 1,3-axis acceleration sensor are gathered the 3-axis acceleration information of human body in real time, and said 3-axis acceleration information is emitted to the Zigbee network through Zigbee network emitter;
Step 2, Zigbee network receiver receive 3-axis acceleration information from the Zigbee network, and are sent to host computer;
Step 3, host computer convert the 3-axis acceleration value of the human body that step 2 receives into the human body angle of inclination; And judge whether the human body angle of inclination that obtains surpasses preset inclination threshold value; If judged result is then exported judged result for being, and with this result as the human body sitting posture testing result; If judged result is then carried out next human body sitting posture constantly and is detected for not.
The method that 3-axis acceleration sensor described in the step 1 is gathered the 3-axis acceleration value of human body is specially:
Represent the rotation of a coordinate system with the form of Eulerian angles, establishing OLMN is position fixing system, establishes OX 0Y 0Z 0Be moving coordinate system, position fixing system overlaps with moving coordinate system when initial, when moving coordinate system around M axle rotational angle θ with around N axle rotational angle
Figure BDA0000111097170000021
Afterwards, moving axes X 0Y 0Z 0The position become OXYZ;
That is:
Figure BDA0000111097170000022
In the formula: X 0, Y 0And Z 0When being respectively initial position, the X of 3-axis acceleration sensor 0Axle, Y 0Axle and Z 0Acceleration output valve axially;
Then, through formula:
Figure BDA0000111097170000023
Obtain the 3-axis acceleration value of human body.
Beneficial effect: the present invention in use, with 3-axis acceleration sensor and Zigbee network emitter be fixed on human body to be detected and with the shoulder equal-height position, can realize detecting through the Zigbee network, intelligent degree is high; Simultaneously, because little, the light weight of volume of 3-axis acceleration sensor and Zigbee network emitter, therefore, the motility of detection system is higher.
Description of drawings
Fig. 1 is a structural representation of the present invention; Fig. 2 is the schematic flow sheet of the inventive method.
The specific embodiment
The specific embodiment one, combination Fig. 1 explain this specific embodiment; Human body sitting posture detection system based on Zigbee acceleration sensing network; It comprises 3-axis acceleration sensor 1, Zigbee network emitter 2, Zigbee network receiver 3 and host computer 4, and 3-axis acceleration sensor 1 and Zigbee network emitter 2 are connected through lead; The 3-axis acceleration signal output part of 3-axis acceleration sensor 1 is connected with the 3-axis acceleration signal input part of Zigbee network emitter 2; The signal transmitting terminal of Zigbee network emitter 2 is through the signal receiving end wireless connections of Zigbee network and Zigbee network receiver 3; The 3-axis acceleration signal output part of Zigbee network receiver 3 is connected with the 3-axis acceleration signal input part of host computer 4.
This embodiment also comprises supply module, and said supply module is used to equipment working power is provided.Zigbee network emitter 2 adopts the 3V lithium coin cells, and Zigbee network receiver 3 adopts two joint No.5 cells.Host computer 4 adopts PC, and the internal operation of said PC has the human-computer interaction interface with real-time explicit user sitting posture state and in PC, sets the correct sitting posture angle.
The wearing mode of native system:
Zigbee wireless transmitting terminals 3 is fixed on about 3 centimeters under the neck (specifically look people's height and decide, get final product with height such as shoulder grade), and Zigbee wireless receiving end links to each other with PC, opens the host computer User Interface.The wireless receiving end not only can link to each other with PC and also can work alone, and carries out wrong sitting posture through LCDs and reminds.
Advantage of the present invention is: 1) through introducing the Zigbee wireless access technology, realized the data acquisition of user's sitting posture; 2) this equipment low-power consumption, low cost, volume are little, highly sensitive; 3) radiationless, the no region limits of international WLAN frequency range, data transmission credibility height; 4) the free setting of sitting posture corrected threshold, tired study and work is reminded; 5) wearing mode is flexible, pastes or utilize elastic threads to fix around the shirtfront to get final product.
The difference of the said human body sitting posture detection system based on Zigbee acceleration sensing network of the specific embodiment two, this specific embodiment and the specific embodiment one is; It also comprises LCDs 5, and the signal input part of said LCDs 5 is connected with the shows signal outfan of Zigbee network receiver 3.
The difference of the specific embodiment three, this specific embodiment and the specific embodiment one or two said human body sitting posture detection systems based on Zigbee acceleration sensing network is; Zigbee network emitter 2, Zigbee network receiver 3 all adopt the CC2430 module to realize; Built-in 8051 microcontrollers are kernel in the said CC2430 module, and integratedly can be operated in the 2.4GHz frequency range and can support the SimpliciTI consensus standard.
The difference of the said human body sitting posture detection system based on Zigbee acceleration sensing network of the specific embodiment four, this specific embodiment and the specific embodiment three is, adopts serial mode to communicate by letter between the 3-axis acceleration signal output part of Zigbee network receiver 3 and the 3-axis acceleration signal input part of host computer 4.
The difference of the said human body sitting posture detection system based on Zigbee acceleration sensing network of the specific embodiment five, this specific embodiment and the specific embodiment one, two or four is that the model of 3-axis acceleration sensor 1 is MMA7361.
Model is that the 3-axis acceleration sensor 1 of MMA7361 has the function of measuring three axial accelerations.
The specific embodiment six, based on the human body sitting posture detection method based on Zigbee acceleration sensing network of the specific embodiment one; 3-axis acceleration sensor in the human body sitting posture detection system 1 is fixed on the position more than the chest of human body to be detected; Start-up system then, said human body sitting posture detection method is realized by following steps:
Step 1,3-axis acceleration sensor 1 be the 3-axis acceleration information of collection human body in real time, and said 3-axis acceleration information is emitted to the Zigbee network through Zigbee network emitter 2;
Step 2, Zigbee network receiver 2 receive 3-axis acceleration information from the Zigbee network, and are sent to host computer 4:
Step 3, host computer 4 convert the 3-axis acceleration value of the human body that step 2 receives into the human body angle of inclination; And judge whether the human body angle of inclination that obtains surpasses preset inclination threshold value; If judged result is then exported judged result for being, and with this result as the human body sitting posture testing result; If judged result is then carried out next human body sitting posture constantly and is detected for not.
The method that 3-axis acceleration sensor described in the step 11 is gathered the 3-axis acceleration value of human body is specially:
Represent the rotation of a coordinate system with the form of Eulerian angles, establishing OLMN is position fixing system, establishes OX 0Y 0Z 0Be moving coordinate system, position fixing system overlaps with moving coordinate system when initial, when moving coordinate system around M axle rotational angle θ with around N axle rotational angle
Figure BDA0000111097170000041
Afterwards, moving axes X 0Y 0Z 0The position become OXYZ;
That is:
Figure BDA0000111097170000042
In the formula: X 0, Y 0And Z 0When being respectively initial position, the X of 3-axis acceleration sensor 0Axle, Y 0Axle and Z 0Acceleration output valve axially;
Then, through formula:
Figure BDA0000111097170000043
Obtain the 3-axis acceleration value of human body.
In this embodiment, Zigbee network emitter 2 utilizes self integrated AD sampling function, and the data of coupled 3-axis acceleration sensor 1 are gathered, and launches through the wireless transmit chip that CC2430 is embedded; After Zigbee network receiver 3 receives 3-axis acceleration data 1,, give the PC host computer with data passes through self integrated UART function (serial ports).Simultaneously, receptor becomes angle of inclination through formula (2) method with the 3-axis acceleration data transaction with the PC host computer, makes the judgement that whether surpasses the inclination threshold value simultaneously, and then realizes the detection of human body sitting posture in the space.
Though the embodiment that the present invention disclosed as above, the embodiment that described content just adopts for the ease of understanding the present invention is not in order to limit the present invention.Technical staff under any the present invention in the technical field; Under the prerequisite of spirit that does not break away from the present invention and disclosed and scope; Can do any modification and variation what implement in form and on the details; But scope of patent protection of the present invention still must be as the criterion with the scope that appending claims was defined.

Claims (7)

1. based on the human body sitting posture detection system of Zigbee acceleration sensing network; It is characterized in that: it comprises 3-axis acceleration sensor (1), Zigbee network emitter (2), Zigbee network receiver (3) and host computer (4), and 3-axis acceleration sensor (1) is connected through lead with Zigbee network emitter (2); The 3-axis acceleration signal output part of 3-axis acceleration sensor (1) is connected with the 3-axis acceleration signal input part of Zigbee network emitter (2); The signal transmitting terminal of Zigbee network emitter (2) is through the signal receiving end wireless connections of Zigbee network and Zigbee network receiver (3); The 3-axis acceleration signal output part of Zigbee network receiver (3) is connected with the 3-axis acceleration signal input part of host computer (4).
2. according to the said human body sitting posture detection system of claim 1 based on Zigbee acceleration sensing network; It is characterized in that it also comprises LCDs (5), the signal input part of said LCDs (5) is connected with the shows signal outfan of Zigbee network receiver (3).
3. according to the said human body sitting posture detection system of claim 1 based on Zigbee acceleration sensing network; It is characterized in that Zigbee network emitter (2), Zigbee network receiver (3) all adopt the CC2430 module to realize; Built-in 8051 microcontrollers are kernel in the said CC2430 module, and the integrated wireless receiving and dispatching standard that can be operated in the 2.4GHz frequency range and can support the SimpliciTI agreement.
4. according to the said human body sitting posture detection system of claim 1, adopt serial mode to communicate by letter between the 3-axis acceleration signal output part that it is characterized in that Zigbee network receiver (3) and the 3-axis acceleration signal input part of host computer (4) based on Zigbee acceleration sensing network.
5. according to the said human body sitting posture detection system based on Zigbee acceleration sensing network of claim 1, the model that it is characterized in that 3-axis acceleration sensor (1) is MMA7361.
6. based on the human body sitting posture detection method of claim 1; It is characterized in that: the above position of chest that will be fixed on human body to be detected based on the 3-axis acceleration sensor (1) in the human body sitting posture detection system of Zigbee acceleration sensing network; Start-up system then, said human body sitting posture detection method is realized by following steps:
The 3-axis acceleration information that step 1,3-axis acceleration sensor (1) are gathered human body in real time, and said 3-axis acceleration information is emitted to the Zigbee network through Zigbee network emitter (2);
Step 2, Zigbee network receiver (2) receive 3-axis acceleration information from the Zigbee network, and are sent to host computer (4);
Step 3, host computer (4) convert the 3-axis acceleration value of the human body that step 2 receives into the human body angle of inclination; And judge whether the human body angle of inclination that obtains surpasses preset inclination threshold value; If judged result is for being; Then export judged result, and with this result as the human body sitting posture testing result; If judged result is then carried out next human body sitting posture constantly and is detected for not.
7. the human body sitting posture detection method based on Zigbee acceleration sensing network according to claim 6 is characterized in that the method for the 3-axis acceleration value of 3-axis acceleration sensor described in the step 1 (1) collection human body is specially:
Represent the rotation of a coordinate system with the form of Eulerian angles, establishing OLMN is position fixing system, establishes OX 0Y 0Z 0Be moving coordinate system, position fixing system overlaps with moving coordinate system when initial, when moving coordinate system around M axle rotational angle θ with around N axle rotational angle
Figure FDA0000111097160000021
Afterwards, moving axes X 0Y 0Z 0The position become OXYZ;
That is:
Figure FDA0000111097160000022
In the formula: X 0, Y 0And Z 0When being respectively initial position, the X of 3-axis acceleration sensor 0Axle, Y 0Axle and Z 0Acceleration output valve axially;
Then, through formula:
Obtain the 3-axis acceleration value of human body.
CN2011103736545A 2011-11-22 2011-11-22 Human body sitting posture detecting system based on Zigbee acceleration sensing network and human body sitting posture detecting method Pending CN102488522A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116250830A (en) * 2023-02-22 2023-06-13 武汉易师宝信息技术有限公司 Human body posture judging and identifying system, device and method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010122174A1 (en) * 2009-04-24 2010-10-28 Commissariat A L'energie Atomique Et Aux Energies Alternatives System and method for determining the posture of a person
CN101934135A (en) * 2010-07-26 2011-01-05 南京理工大学 Physical ability automated test system
CN201727615U (en) * 2010-01-06 2011-02-02 孟宪超 Wireless sitting posture correcting device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010122174A1 (en) * 2009-04-24 2010-10-28 Commissariat A L'energie Atomique Et Aux Energies Alternatives System and method for determining the posture of a person
CN201727615U (en) * 2010-01-06 2011-02-02 孟宪超 Wireless sitting posture correcting device
CN101934135A (en) * 2010-07-26 2011-01-05 南京理工大学 Physical ability automated test system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116250830A (en) * 2023-02-22 2023-06-13 武汉易师宝信息技术有限公司 Human body posture judging and identifying system, device and method

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Application publication date: 20120613