CN107170198B - One kind detecting warning device from bed - Google Patents
One kind detecting warning device from bed Download PDFInfo
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- CN107170198B CN107170198B CN201710347552.3A CN201710347552A CN107170198B CN 107170198 B CN107170198 B CN 107170198B CN 201710347552 A CN201710347552 A CN 201710347552A CN 107170198 B CN107170198 B CN 107170198B
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/04—Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons
- G08B21/0438—Sensor means for detecting
- G08B21/0461—Sensor means for detecting integrated or attached to an item closely associated with the person but not worn by the person, e.g. chair, walking stick, bed sensor
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
Abstract
The invention discloses one kind to detect warning device from bed, it include: control module, acquire information unit, host node, network node, acquiring information unit includes: the first infrared node unit, second infrared node unit, first pressure node unit and second pressure node unit, acquisition information unit is used to acquire the triggering state of each node, input host node, the triggering state that host node passes through each node, obtain the state of personnel to be detected, network node is used to the state of personnel to be detected being sent to control module, the state that control module is used to treat testing staff is monitored.Using apparatus of the present invention, by acquiring the triggering state of information unit, and then detected personnel state may determine that.The present invention can help to personnel in the real time monitoring ward such as home for destitute, hospital from bed situation, improve the timely processing capacity of the emergencies such as reply falling from bed, have many advantages, such as to be easily installed, is reliable and secure, cheap.
Description
Technical field
The invention belongs to sensor detection fields, detect warning device from bed more particularly, to one kind.
Background technique
With the rapidly increase of aged's quantity, demand sustainable growth of the society to medical rehabilitation and monitoring device.I
State is currently under aging society, and within the following half a century, China's aged's accounting will rise to 22% from 10%.By
It needs to concentrate on most of the time and energy in work in young labour, the elderly is often stay-at-home alone to be in, and lacks necessity
Monitoring and treatment.Old man is sent into the main trend that home for destitute concentrates treatment to be increasingly becoming Chinese society.Using video figure
As be monitored come the activity situation to old man be home for destitute traditional method, facilitate nursing staff to emergency in time into
Row processing but video monitoring it is ineffective, and monitoring range is extremely limited, the raw dangerous situation of once old human hair and in view
Except the range of frequency monitoring, it will lead to rescue processing not in time, influence the health of old man.
The old man for living in home for destitute alone spends the most of the time in bed, according to data statistics, 80% in old man room
Tumble happens near bed, is particularly susceptible generation during from bed, for this case, detects and alarms from bed
Device technique constantly improve.In current research, the sensor for being able to detect human body physical state is widely used in prison
In control system, including infrared sensor, pressure sensor and ultrasonic sensor etc..Wireless sensor network, individual and from group
Knitmesh network, Radio Frequency Identification Technology and ZigBee-network technology are largely used to building local network, to realize in each single biography
Heat transfer agent and control command are transmitted between sensor node.How while simplifying sensor network, increasing sensor can be monitored
The human body physical state arrived is monitoring systematic research direction.
It can be seen that there are monitoring ranges is extremely limited for the prior art, the timely processing energy of the emergencies such as reply falling from bed
Hypodynamic technical problem.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides one kind detects warning device from bed,
Be designed to provide it is a kind of safe and reliable, can monitoring range it is wide and what is be easily installed detects warning device from bed, thus solve existing
It is extremely limited with the presence of technology monitoring range, the technical problem of the timely processing capacity deficiency of emergencies such as reply falling from bed.
To achieve the above object, the present invention provides one kind detects warning device from bed, comprising: control module, acquisition letter
Interest statement member, host node, network node,
Acquisition information unit include: the first infrared node unit, the second infrared node unit, first pressure node unit and
Second pressure node unit,
Acquisition information unit is used to acquire the triggering state of each node, inputs host node,
Host node obtains the state of personnel to be detected by the triggering state of each node,
Network node is used to the state of personnel to be detected being sent to control module,
The state that control module is used to treat testing staff is monitored.
Further, information unit and host node are acquired, network section is passed through by wired connection, host node and control module
Point connection, for such connection type while guaranteeing to transmit information quality, structure is most simple.
Further, the structure of the first infrared node unit and the second infrared node unit is identical, the first infrared node list
The first infrared distance sensor that member includes: the first infrared single-chip microcontroller, is connect with the first infrared single-chip microcontroller, when having object gear the
When before the probe of one infrared distance sensor, the delivery outlet of the first infrared single-chip microcontroller exports analog voltage, and analog voltage is big
The first infrared node unit is triggered when the first preset value.
Further, the first preset value is the value set in actual use according to different users of service.
Further, first pressure node unit is identical with the structure of second pressure node unit, first pressure node list
Member includes: first pressure single-chip microcontroller, the first pressure sensor connecting with first pressure single-chip microcontroller and first pressure pad, when there is pressure
When power is acted on first pressure pad, the delivery outlet of first pressure single-chip microcontroller exports analog voltage, and analog voltage is greater than the
First pressure node unit is triggered when two preset values.
Further, the second preset value is the value set in actual use according to different users of service.
Further, host node includes: host node single-chip microcontroller, transmission module, mobile power source module, and transmission module is used for will
Host node information is sent to network node.
Further, the first infrared node unit is mounted among the head of a bed, and the second infrared node unit is mounted on head of a bed side
Edge and the first infrared node unit sustained height, first pressure node unit and second pressure node unit are mounted on bed or more
The ground of bed side, network node and host node are mounted on the side for going to bed side of bed.
Further, the triggering state of acquisition information unit, the shape of the personnel to be detected detected are utilized when device works
State includes: to lie down, sit up, being sitting in bedside, standing, doubtful falling from bed, falling from bed and from bed.
Further, when device works, comprising:
(1) current state of personnel to be detected is to lie down, and host node continues to obtain the triggering state of acquisition information unit, such as
Fruit the first infrared node unit triggers, first pressure node unit and second pressure node unit do not trigger, then NextState is
It sits up；If the first infrared node unit does not trigger, the second infrared node unit triggers, first pressure node unit and second is pressed
Power node unit does not trigger, then NextState is doubtful falling from bed；If the first infrared node unit and the second infrared node unit
It does not trigger, first pressure node unit and the triggering of second pressure node unit, then NextState is falling from bed；
(2) current state of personnel to be detected is to sit up, and host node continues to obtain the triggering state of acquisition information unit, such as
Fruit the first infrared node unit does not trigger, the second infrared node unit triggers, first pressure node unit and second pressure node
Unit has any one triggering, then NextState is to be sitting in bedside；If the first infrared node unit does not trigger, first pressure node
Unit and second pressure node unit do not trigger, then NextState is to lie down；
(3) current state of personnel to be detected is to be sitting in bedside, and host node continues to obtain the triggering shape of acquisition information unit
State, if the first infrared node unit and the second infrared node unit do not trigger, first pressure node unit and second pressure section
Dot element has any one triggering, then NextState is to stand；If the first infrared node unit triggers, first pressure node list
Member and second pressure node unit do not trigger, then NextState is to sit up；
(4) current state of personnel to be detected is to stand, and host node continues to obtain the triggering state of acquisition information unit, such as
Fruit acquisition information unit does not trigger, then NextState is from bed；If the first infrared node unit and the second infrared node unit
It does not trigger, first pressure node unit and the triggering of second pressure node unit, then NextState is falling from bed；If the second infrared section
Dot element triggering, first pressure node unit and second pressure node unit have any one triggering, then NextState is to be sitting in
Bedside；
(5) current state of personnel to be detected is doubtful falling from bed, and host node continues to obtain the triggering shape of acquisition information unit
State, if acquisition information unit does not trigger, NextState is to lie down；If the first infrared node unit triggers, first pressure
Node unit and second pressure node unit do not trigger, then NextState is to sit up；If the first infrared node unit and second
Infrared node unit does not trigger, and first pressure node unit and the triggering of second pressure node unit, then NextState is falling from bed；
(6) current state of personnel to be detected is falling from bed, and host node sends warning message to network node, reminds control mould
Block implements emergent management, and host node continues to obtain the triggering state of acquisition information unit, if acquisition information unit does not trigger,
NextState is from bed；
(7) current state of personnel to be detected is from bed, and host node continues to obtain the triggering state of acquisition information unit, such as
Fruit the first infrared node unit and the second infrared node unit do not trigger, first pressure node unit and second pressure node unit
There is any one triggering, then NextState is to stand.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, have the advantage that
(1) apparatus of the present invention judge personnel's shape to be detected using host node by acquiring the triggering state of information unit
State.Present invention can apply to monitoring for room from bed, also can be applied to monitoring from bed for multiple rooms, the present invention can have
Help personnel in the real time monitoring ward such as home for destitute, hospital from bed situation, improve the timely place of the emergencies such as reply falling from bed
Reason ability has many advantages, such as to be easily installed, is reliable and secure, cheap.
(2) present invention acquisition information unit includes 4 and node unit, improves recognition accuracy, increases network node
With the demand of control module, the unexpected old man that can happen suddenly in time provides help.
(3) preferably, detect when the invention works from bed/return bed process feature action state be personnel to be detected from
Bed/return several typical action states occurred during bed, can be detected by node unit work in combination, extract these features
Action state helps to judge the current physical condition of personnel to be detected, effectively increases detection efficiency and accuracy.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram from bed detection warning device；
Fig. 2 is a kind of floor map from bed detection warning device；
Fig. 3 is a kind of scheme of installation from bed detection warning device；
Fig. 4 is the structural schematic diagram of the first infrared node unit in the embodiment of the present invention；
Fig. 5 is the structural schematic diagram of the first infrared node cell enclosure in the embodiment of the present invention；
Fig. 6 is the structural schematic diagram of first pressure node unit in the embodiment of the present invention；
Fig. 7 is the structural schematic diagram of host node in the embodiment of the present invention；
Fig. 8 is the structural schematic diagram of host node shell in the embodiment of the present invention；
Fig. 9 (a) is in the embodiment of the present invention from bed/time bed process state of couching schematic diagram；
Fig. 9 (b) is to sit up status diagram in the embodiment of the present invention from bed/return bed process；
Fig. 9 (c) is to be sitting in bedside status diagram from bed/time bed process in the embodiment of the present invention；
Fig. 9 (d) is in the embodiment of the present invention from bed/time bed process standing status diagram；
Fig. 9 (e) is from bed/time bed process in the embodiment of the present invention from bed status diagram；
Fig. 9 (f) is in the embodiment of the present invention from bed/time bed process falling from bed status diagram；
Figure 10 is a kind of flow chart from bed detection alarm method；
Figure 11 is communication process schematic diagram between each node in the embodiment of the present invention；
Figure 12 is that host node communicates and alarm flow schematic diagram with ZigBee-network node in the embodiment of the present invention.
In all the appended drawings, identical appended drawing reference is used to denote the same element or structure, in which:
R1 is the first infrared node unit, and R2 is the second infrared node unit, and P1 is first pressure node unit, and P2 is
Two pressure node units.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
As shown in Figure 1, a kind of include: control module, acquire information unit, host node, network from bed detection warning device
Node, acquisition information unit include: the first infrared node unit, the second infrared node unit, first pressure node unit and the
Two pressure node units, acquisition information unit are used to acquire the triggering state of each node, input host node, and host node passes through each section
The triggering state of point, obtains the state of personnel to be detected, and network node is used to the state of personnel to be detected being sent to control mould
Block, the state that control module is used to treat testing staff are monitored.
Preferably, as shown in Fig. 2, a kind of from bed detection warning device includes: acquisition for testing staff from bed state
Information unit, acquisition information unit includes: the first infrared node unit 1, the second infrared node unit 2, first pressure node list
Member 3 and second pressure node unit 4, for receiving information and uploading the host node 5 of ZigBee-network node, for each node with
The RS485 bus 6 for communicating and powering between host node, for transmitting the ZigBee-network node of host node information to control module
7 and bed 8.
Number of nodes of the present invention has 4, improves recognition accuracy, increases ZigBee-network node and control module
Demand, the unexpected old man that can happen suddenly in time provide help.
As shown in figure 3, a kind of detect warning device in actual use from bed, the Bed cushion wall of bed 8 is placed；First is red
Acromere dot element 1 and the second infrared node unit 2 are horizontally arranged at proper height above the head of a bed of bed 8, and the first infrared section
The horizontal position of dot element 1 is in the centre of bed 8, and the horizontal position of the second infrared node unit 2 is in the bed close to bed 8
At side, so that personnel are from bed or when returning bed, two infrared nodes of triggering generate the time difference；First pressure node unit 3 and second pressure
Node unit 4 is horizontally arranged at the ground that bed 8 goes to bed side, and first pressure node unit 3 and second pressure node list
The total length and 8 length of bed of member 4 are roughly the same, so that measurement range is wider；What host node 5 was mounted on bed 8 goes to bed one
The side of side receives the triggering information of each node convenient for linking with infrared node and pressure node；RS485 bus 6 is mounted on
Bed 8 is leaned to one side, and the bus interface of all parts is connected, and hidden as far as possible, compact installation keeps overall appearance succinct, ZigBee-network
The received triggering information of host node 5 is sent to control module by connecting corresponding component in host node 5 by node 7.
The structure of first infrared node unit and the second infrared node unit is identical, as shown in figure 4, the first infrared node list
Member includes: the first infrared single-chip microcontroller 9, the first infrared distance sensor 10 connecting with the first infrared single-chip microcontroller 9, the first infrared section
Dot element RS485 bus 11 and the first infrared power module 12, power supply mode are that host node is total system power supply, simplify system
Complexity, node shell designed, designed, overall compact is beautiful, and the first infrared single-chip microcontroller 9 can use model
The singlechip chip of stm8s103F3P6, the first infrared distance sensor 10 are infrared using Sharp GP2Y0A02YK0F diffusing reflection formula
Distance measuring sensor, when there is object gear before the probe of the first infrared distance sensor 10, the delivery outlet of the first infrared single-chip microcontroller 9
The analog voltage of output changes correspondingly, and judges whether the first infrared node unit is triggered according to the size of analog voltage,
First infrared node unit R S485 bus 11 uses four-wire system full-duplex communication mode, and wherein logical signal uses differential signal
Transmission, earth signal are connect with other component earth signal, and power supply signal is connect with other component power supply signal, plays total system simultaneously
Power supply function, the first power module 12 use ASM1117 voltage stabilizing chip circuit.
As shown in figure 5, the use of the first infrared node cell enclosure 13 is T-shaped, it is fixed on metope using screw, is not easy to take off
It falls, compact overall structure is beautiful, for encapsulating the first infrared single-chip microcontroller and its connected all parts；Wherein the first infrared node
Cell enclosure probe interface 14 is used to draw the transmitting terminal probe and receiving end probe of the first infrared distance sensor 10, and can adjust
The detection angles up and down of whole first infrared distance sensor, practical, the first infrared node cell enclosure bus interface 15 is used
In drawing the first infrared node unit R S485 bus 11 to RS485 bus 6, information transmission and power supply supply are carried out.
First pressure node unit is identical with the structure of second pressure node unit, as shown in fig. 6, first pressure node list
Member includes: first pressure single-chip microcontroller 16, the resistance-type first pressure sensor 17 connecting with first pressure single-chip microcontroller 16, the first pressure
Power node unit RS485 bus 18 and first pressure power module 19, and encapsulate first pressure single-chip microcontroller 16 and its connected
The first pressure pad 20 of all parts；
In embodiments of the present invention, first pressure single-chip microcontroller 16 can use the monolithic machine core of model stm8f10f3p6
Piece, resistance-type first pressure sensor 17 embed two layers of tin-foil plate, and it is logical that equally distributed circle is filled between upper layer and lower layer tin-foil plate
Hole sponge, when there is pressure to act on pressure pad, upper layer and lower layer tin-foil plate is in contact by round tube hole, first pressure single-chip microcontroller
The analog voltage of 16 delivery outlet output changes correspondingly, and judges whether pressure node is touched according to the size of analog voltage
Hair, first pressure node unit RS485 bus 18 use four-wire system half-duplex operation mode, and wherein logical signal is believed using difference
Number transmission, earth signal connect with other module earth signals, and power supply signal is connect with other modular power source signals, and it is same to play total system
When power supply function, first pressure power module 19 use ASM1117 voltage stabilizing chip circuit, first pressure pad 20 use coat of paint material
Material, is sewed by needlework, has the function of softness, waterproof, anti-skidding, and be unlikely to deform, easy cleaning is arranged, wherein first
Pressure pad RS485 interface 21 carries out information transmission for drawing first pressure node unit RS485 bus 18 to RS485 bus 6
It is supplied with power supply.
As shown in fig. 7, host node includes: host node single-chip microcontroller 22, the host node RS485 being connect with host node single-chip microcontroller 22
Bus 23, ZigBee module 24, mobile power source module 25.
As shown in figure 8, host node shell 26 is for encapsulating host node single-chip microcontroller 22 and its connected all parts.
In embodiments of the present invention, host node single-chip microcontroller 22 can use the singlechip chip of model stm8f10f3p6,
And there is switching device, it can control system-wide work and stopping, host node RS485 bus 23 uses four-wire system full-duplex communication
Mode, wherein logical signal is transmitted using differential signal, and earth signal is connect with other module earth signals, power supply signal and other portions
Total system power supply function simultaneously, the operating mode that host node RS485 bus 23 is inquired using circulation are played in the connection of part power supply signal
Successively refresh the first infrared node unit 1, the second infrared node unit 2, first pressure node unit 3 and second pressure node list
The triggering state information of member 4, and send and summarize to host node 5, ZigBee module 24 uses CC2530 integrated chip module, is used for
Each sensor information that host node 5 is received is sent to ZigBee-network node 7, monitors convenient for control module, mobile power source
25 small volume of module, convenient for encapsulation, capacity 2600mA powers for total system, and host node shell 26 is fixed on using screw
Leaning to one side for bed 8, not easily to fall off, compact overall structure is beautiful, and convenient for connecting RS485 bus 6 with other modules, wherein moving
The encapsulation of 25 traverse of power module, host node shell charge port 27 are used to charge for mobile power source module 25, host node shell bus
Interface 28 carries out information transmission and power supply supply, host node shell for drawing host node RS485 bus 23 to RS485 bus 6
Switch mouth 29 is used to draw the switch of host node single-chip microcontroller 22, convenient for switching and initializing total system, host node shell ZigBee
Interface 30 is used to draw the antenna of ZigBee module 24, enhances signal strength.
Detecting from bed/return bed process feature action state includes: to lie down 31, sits up 32, is sitting in bedside 33, stands 34, from
Bed 35, falling from bed 36.The output analog voltage of the single-chip microcontroller acquisition sensor of each node, judges that first is infrared by single-chip microcontroller output
Whether node unit, the second infrared node unit and first pressure node unit, second pressure node unit are triggered.
In embodiments of the present invention, state, which lies down, 31 lies in 8 middle section of bed for personnel, as shown in Fig. 9 (a), at this time
Any node will not be triggered；As shown in Fig. 9 (b), state, which sits up, 32 is sitting in 8 middle section of bed for personnel, at this time personnel's body
The front of the first infrared node unit 1 is blocked, the first infrared node unit 1 is triggered；As shown in Fig. 9 (c), state 33 is personnel's seat
In the side that bed 8 is gone to bed, personnel's body blocks the front of the second infrared node unit 2 at this time, and foot steps down in first pressure section
On dot element 3 or second pressure node unit 4, the first infrared node unit 2 and first pressure node unit 3 or the second pressure are triggered
Power node unit 4；As shown in Fig. 9 (d), state 34 is that personnel have just left bed 8 and stood near bed 8, at this time personnel
Foot steps down on first pressure node unit 3 or second pressure node unit 4, triggers first pressure node unit 3 or second pressure
Node unit 4；As shown in Fig. 9 (e), state 35 is that personnel leave bed 8 and station compared with distant positions, will not trigger any section at this time
Point；As shown in Fig. 9 (f), state falling from bed 36 is that personnel fall to ground, and personnel's body is pressed in first pressure node unit 3 at this time
On second pressure node unit 4, while triggering first pressure node unit 3 and second pressure node unit 4.
/ returning bed process feature action state is personnel from bed/several typical actions occurred during returning bed from bed
State can be detected by sensor node work in combination, and extracting these characteristic action states facilitates the current of judgement personnel
Physical condition effectively increases detection efficiency and accuracy.
It is as shown in Figure 10, a kind of that FSM algorithm being utilized from bed detection alarm method, comprising:
From bed detect FSM algorithm by detect from bed/return bed process feature action state based on, with limited state and
The behaviors founding mathematical models such as transfer and movement between these states, enumerating all characteristic action states according to the actual situation can
The tandem that can occur, the actual body situation of personnel is judged by different tandems.
In embodiments of the present invention, indicate that the first infrared node unit 1, second is red with state vector [R1, R2, P1, P2]
The triggering state of acromere dot element 2, first pressure node unit 3 and second pressure node unit 4, wherein the first infrared node
Unit 1, the second infrared node unit 2 have following state: B state indicates that triggering, N-state expression do not trigger, and X state indicates to appoint
Meaning state；First pressure node unit 3 and second pressure node unit 4 have such as lower node: P-state indicates triggering, N-state table
Show and do not trigger, X state indicates free position；O state indicates total system free position, | | state indicates total system or state；Tool
Body algorithm includes the following steps:
(1) current state of personnel to be detected is to lie down；If the first infrared node unit triggers, the second infrared node list
Member is free position, and first pressure node unit and second pressure node unit do not trigger, enters step (2)；If first is red
Acromere dot element does not trigger, and the second infrared node unit triggers, first pressure node unit and second pressure node unit do not touch
Hair, enters step (5)；If the first infrared node unit and the second infrared node unit do not trigger, first pressure node unit
It is triggered with second pressure node unit, enters step (6)；
(2) current state of personnel to be detected is to sit up, and host node continues to obtain the triggering state of acquisition information unit, such as
Fruit the first infrared node unit does not trigger, the second infrared node unit triggers, first pressure node unit and second pressure node
Unit has any one triggering, enters step (3)；If the first infrared node unit does not trigger, the second infrared node unit is to appoint
Meaning state, first pressure node unit and second pressure node unit do not trigger, return step (1)；
(3) current state of personnel to be detected is to be sitting in bedside, and host node continues to obtain the triggering shape of acquisition information unit
State, if the first infrared node unit and the second infrared node unit do not trigger, first pressure node unit and second pressure section
Dot element has any one triggering, enters step (4)；If the first infrared node unit triggers, the second infrared node unit is
Free position, first pressure node unit and second pressure node unit do not trigger, return step (2)；
(4) current state of personnel to be detected is to stand, and host node continues to obtain the triggering state of acquisition information unit, such as
Fruit acquisition information unit does not trigger, enters step (7)；If the first infrared node unit and the second infrared node unit do not touch
Hair, first pressure node unit and the triggering of second pressure node unit, enter step (6)；If the first infrared node unit is
Free position, the second infrared node unit triggers, first pressure node unit and second pressure node unit have any one touching
Hair, return step (3)；
(5) the doubtful falling from bed of personnel to be detected is judged at this time, and host node continues to obtain the triggering state of acquisition information unit, such as
Fruit acquisition information unit does not trigger, return step (1)；If the first infrared node unit triggers, the second infrared node unit is
Free position, first pressure node unit and second pressure node unit do not trigger, return step (2)；If the first infrared section
Dot element and the second infrared node unit do not trigger, first pressure node unit and the triggering of second pressure node unit, into step
Suddenly (6)；
(6) current state of personnel to be detected is falling from bed, and host node is sent out by ZigBee module to ZigBee-network node
Warning message is sent, control module is reminded to implement emergent management, host node continues to obtain the triggering state of acquisition information unit, if
Acquisition information unit does not trigger, enters step (7)；
(7) current state of personnel to be detected is from bed, and host node continues to obtain the triggering state of acquisition information unit, such as
Fruit the first infrared node unit and the second infrared node unit do not trigger, first pressure node unit and second pressure node unit
There are any one triggering, return step (4).
Further, the distance threshold range is 1m-1.5m, and each infrared collecting time interval is 10ms.
In order to further explain each sensor node status information transmission process in the embodiment of the present invention, now in conjunction with Figure 11
The implementation process that each sensor node transmission status information is described in detail is as follows:
(S1) after system initialization, infrared node RS485 bus and pressure node RS485 bus are set as receiving shape
State receives the order for the inquiry status information that host node is sent by RS485 bus, if receiving inquiry command, into step
Suddenly (S2)；If not receiving inquiry command, maintain step (S1)；
(S2) infrared node RS485 bus and pressure node RS485 bus are set as transmission state, by the first infrared node
Unit, the second infrared node unit, the triggering state of first pressure node unit and second pressure node unit are total by RS485
Line is sent to host node, after the completion of sending information, return step (S1).
In order to further explain primary node status information reception process and ZigBee-network section in the embodiment of the present invention
The working method of point receives each sensor node status information now in conjunction with Figure 12 detailed description host node and is sent to ZigBee net
The implementation process of network node is as follows:
(T1) after system parameter initialization, house dog judgement and state are restored, and the host node RS485 that host node is arranged is total
Line is set as transmission state, to the first infrared node unit, the second infrared node unit, first pressure node unit and the second pressure
Power node unit successively sends the order of inquiry status information, and after being sent completely, host node RS485 bus is set as receiving shape
State；If each sensor node receives inquiry command, (T2) is entered step；If sensor node does not receive inquiry life
It enables, enters step (T3)；
(T2) the first infrared node unit, the second infrared node unit, first pressure node unit and second pressure node
Unit updates node state, host node is sent to, and judge personnel's current state according to from bed detection FSM algorithm, if personnel
State is falling from bed, enters step (T4)；If personnel state is not falling from bed, return step (T1)；
(T3) sensor node for not receiving inquiry command not will be updated state, and host node carries out the sensor node
Label and count, if label and counting reach 3 times, send this information to ZigBee-network node, notice control module into
Row processing；If label and counting not up to 3 time, return step (T1)；
(T4) information of personnel's falling from bed is sent to ZigBee-network node by host node, and notice control module is handled,
After the completion of processing, return step (T1)；
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (5)
1. a kind of detect warning device from bed characterized by comprising control module, acquisition information unit, host node, network
Node,
The acquisition information unit include: the first infrared node unit, the second infrared node unit, first pressure node unit and
Second pressure node unit,
The acquisition information unit is used to acquire the triggering state of each node, inputs host node,
The host node judges the state of personnel to be detected by the triggering state of each node,
The network node is used to the state of personnel to be detected being sent to control module,
The state that the control module is used to treat testing staff is monitored, if personnel's falling from bed to be detected, starting alarm；
The first infrared node unit is mounted among the head of a bed, and the second infrared node unit is mounted on head of a bed edge, the first pressure
Power node unit and second pressure node unit are mounted on the ground that bed goes to bed side, and network node and host node are mounted on
The side for going to bed side of bed；
The triggering state detected from bed when warning device works using acquisition information unit, the personnel's to be detected detected
State includes: to lie down, sit up, being sitting in bedside, standing, doubtful falling from bed, falling from bed and from bed；
When the detection warning device work from bed, comprising:
(1) current state of personnel to be detected is to lie down, and host node continues to obtain the triggering state of acquisition information unit, if the
One infrared node unit triggers, first pressure node unit and second pressure node unit do not trigger, then NextState is to sit up；
If the first infrared node unit does not trigger, the second infrared node unit triggers, first pressure node unit and second pressure section
Dot element does not trigger, then NextState is doubtful falling from bed；If the first infrared node unit and the second infrared node unit do not touch
Hair, first pressure node unit and the triggering of second pressure node unit, then NextState is falling from bed；
(2) current state of personnel to be detected is to sit up, and host node continues to obtain the triggering state of acquisition information unit, if the
One infrared node unit does not trigger, the second infrared node unit triggers, first pressure node unit and second pressure node unit
There is any one triggering, then NextState is to be sitting in bedside；If the first infrared node unit does not trigger, first pressure node unit
It is not triggered with second pressure node unit, then NextState is to lie down；
(3) current state of personnel to be detected is to be sitting in bedside, and host node continues to obtain the triggering state of acquisition information unit, such as
Fruit the first infrared node unit and the second infrared node unit do not trigger, first pressure node unit and second pressure node unit
There is any one triggering, then NextState is to stand；If the first infrared node unit triggers, first pressure node unit and
Two pressure node units do not trigger, then NextState is to sit up；
(4) current state of personnel to be detected is to stand, and host node continues to obtain the triggering state of acquisition information unit, if adopted
Collection information unit does not trigger, then NextState is from bed；If the first infrared node unit and the second infrared node unit do not touch
Hair, first pressure node unit and the triggering of second pressure node unit, then NextState is falling from bed；If the second infrared node list
Member triggering, first pressure node unit and second pressure node unit have any one triggering, then NextState is to be sitting in bedside；
(5) current state of personnel to be detected is doubtful falling from bed, and host node continues to obtain the triggering state of acquisition information unit, such as
Fruit acquisition information unit does not trigger, then NextState is to lie down；If the first infrared node unit triggers, first pressure node list
Member and second pressure node unit do not trigger, then NextState is to sit up；If the first infrared node unit and the second infrared section
Dot element does not trigger, and first pressure node unit and the triggering of second pressure node unit, then NextState is falling from bed；
(6) current state of personnel to be detected is falling from bed, and host node sends warning message to network node, reminds control module real
Emergent management is applied, host node continues to obtain the triggering state of acquisition information unit, next if acquisition information unit does not trigger
State is from bed；
(7) current state of personnel to be detected is from bed, and host node continues to obtain the triggering state of acquisition information unit, if the
One infrared node unit and the second infrared node unit do not trigger, and first pressure node unit and second pressure node unit, which have, appoints
It anticipates one and triggers, then NextState is to stand.
2. as described in claim 1 a kind of from bed detection warning device, which is characterized in that the acquisition information unit and main section
Point is connected with control module by network node by wired connection, host node.
A kind of detect warning device from bed 3. as described in claim 1, which is characterized in that the first infrared node unit with
The structure of second infrared node unit is identical, and the first infrared node unit includes: the first infrared single-chip microcontroller and the first infrared monolithic
First infrared distance sensor of machine connection, when there is object gear before the probe of the first infrared distance sensor, first is infrared
The delivery outlet of single-chip microcontroller exports analog voltage, and the first infrared node unit is touched when analog voltage is greater than the first preset value
Hair.
A kind of detect warning device from bed 4. as described in claim 1, which is characterized in that the first pressure node unit with
The structure of second pressure node unit is identical, and first pressure node unit includes: first pressure single-chip microcontroller and first pressure monolithic
The first pressure sensor and first pressure pad of machine connection, when there is pressure to act on first pressure pad, first pressure monolithic
The delivery outlet of machine exports analog voltage, and first pressure node unit is triggered when analog voltage is greater than the second preset value.
5. as described in claim 1 a kind of from bed detection warning device, which is characterized in that the host node includes: host node
Single-chip microcontroller, transmission module, mobile power source module, transmission module are used to host node information being sent to network node.
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| CN108764190B (en) * | 2018-06-04 | 2021-09-24 | 山东财经大学 | Video monitoring method for off-bed and on-bed states of old people |
| CN113096357B (en) * | 2021-04-06 | 2022-04-22 | 西安理工大学 | Sudden danger condition judgment method for monitoring bed state of elderly living alone |
| CN113288064B (en) * | 2021-05-31 | 2023-02-17 | 青岛海尔空调器有限总公司 | Method, device and equipment for sending alarm information |
| CN113671489B (en) * | 2021-08-09 | 2023-10-17 | 珠海格力电器股份有限公司 | State reminding method and device, electronic equipment and computer readable storage medium |
| CN115100818B (en) * | 2022-06-16 | 2023-05-12 | 浙江中医药大学附属第三医院 | Portable body position discernment reminding device that tumbles |
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| CN104484978A (en) * | 2014-11-25 | 2015-04-01 | 重庆邮电大学 | Old people on-chair falling alarming system based on Zigbee |
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| CN101833849A (en) * | 2009-03-13 | 2010-09-15 | 上海研祥智能科技有限公司 | Device for monitoring daily life of patients in wireless mode |
| CN103824418A (en) * | 2013-02-07 | 2014-05-28 | 贝辛电子科技（上海）有限公司 | Off-bed monitoring alarm system, alarm device and alarm method and bed |
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