CN107170198A - It is a kind of to detect warning device from bed - Google Patents
It is a kind of to detect warning device from bed Download PDFInfo
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- CN107170198A CN107170198A CN201710347552.3A CN201710347552A CN107170198A CN 107170198 A CN107170198 A CN 107170198A CN 201710347552 A CN201710347552 A CN 201710347552A CN 107170198 A CN107170198 A CN 107170198A
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- 230000032683 aging Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
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- 239000011551 heat transfer agent Substances 0.000 description 1
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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
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- Gerontology & Geriatric Medicine (AREA)
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- Accommodation For Nursing Or Treatment Tables (AREA)
- Emergency Alarm Devices (AREA)
- Invalid Beds And Related Equipment (AREA)
Abstract
Warning device is detected from bed the invention discloses one kind, including：Control module, collection information unit, host node, network node, collection information unit include：First infrared node unit, the second infrared node unit, first pressure node unit and second pressure node unit, collection information unit is used for the triggering state for gathering 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 send the state of personnel to be detected to control module, and the state that control module is used to treat testing staff is monitored.Using apparatus of the present invention, by gathering the triggering state of information unit, and then detected personnel state may determine that.The present invention can help to home for destitute, hospital etc. in real time in monitoring ward personnel from bed situation, improve the timely disposal ability of the emergencies such as reply pendant bed, have the advantages that to be easily installed, reliable and secure, cheap.
Description
Technical field
The invention belongs to sensor detection field, warning device is detected from bed more particularly, to one kind.
Background technology
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, within following half a century, and China's aged's accounting will rise to 22% from 10%.By
Need 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, contribute to nursing staff to enter emergency in time
The effect of row processing but video monitoring is not good, and monitoring range is extremely limited, and dangerous situation occurs for once old people and is in regard
Outside the scope of frequency monitoring, rescue processing will be caused not in time, influence old man's is healthy.
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 situation occurs in the vicinity of bed, is particularly susceptible generation during from bed, for this case, detects and alarms from bed
Device technique constantly improve.In current research, it can detect that the sensor of 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, REID and ZigBee-network technology are largely used to build local network, to realize in each single biography
Heat transfer agent and control command are transmitted between sensor node.How while sensor network is simplified, increase sensor can be monitored
The human body physical state arrived, is the research direction of monitoring system.
As can be seen here, prior art has that monitoring range is extremely limited, the timely processing energy of the emergency such as reply pendant bed
Hypodynamic technical problem.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, warning device is detected from bed the invention provides one kind, its
Purpose be to provide it is a kind of it is safe and reliable, can monitoring range it is wide and be easily installed detect warning device from bed, thus solve existing
It is extremely limited with the presence of technology monitoring range, the technical problem of the timely disposal ability deficiency of the emergency such as reply pendant bed.
To achieve the above object, warning device is detected from bed the invention provides one kind, including：Control module, collection letter
Interest statement member, host node, network node,
Collection information unit includes：First infrared node unit, the second infrared node unit, first pressure node unit and
Second pressure node unit,
Collection information unit is used for the triggering state for gathering 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 send the state of personnel to be detected to control module,
The state that control module is used to treat testing staff is monitored.
Further, collection information unit and host node pass through network section by wired connection, host node and control module
Point connection, such connected mode is while transmission information quality is ensured, 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
Member includes：First infrared single-chip microcomputer, the first infrared distance sensor being connected with the first infrared single-chip microcomputer, when having object gear the
When before the probe of one infrared distance sensor, the delivery outlet output analog voltage of the first infrared single-chip microcomputer, analog voltage
The first infrared node unit is triggered during more than the first preset value.
Further, the first preset value is the value in actual use according to different users of service setting.
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 microcomputer, the first pressure sensor and first pressure pad being connected with first pressure single-chip microcomputer, when there is pressure
When power is acted on first pressure pad, the delivery outlet of first pressure single-chip microcomputer output analog voltage, analog voltage is more than
First pressure node unit is triggered during the second preset value.
Further, the second preset value is the value in actual use according to different users of service setting.
Further, host node includes：Host node single-chip microcomputer, transport module, portable power source module, transport module is used for will
Host node information is sent to network node.
Further, the first infrared node unit is arranged in the middle of the head of a bed, and the second infrared node unit is arranged 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 arranged on above and below bed
The ground of bed side, network node and host node are arranged on the side of the bunk bed side of bed.
Further, using the triggering state for gathering information unit when device works, the shape of the detected personnel detected
State includes：Couch, sit up, being sitting in bedside, standing, doubtful pendant bed, pendant bed and from bed.
Further, when device works, including：
(1) current state of personnel is detected to couch, and host node continues to obtain the triggering state of collection information unit, such as
Really the first infrared node unit triggers, first pressure node unit and second pressure node unit are not triggered, then NextState is
Sit up；If the first infrared node unit is not triggered, the second infrared node unit triggers, first pressure node unit and second is pressed
Power node unit is not triggered, then NextState is doubtful pendant bed；If the first infrared node unit and the second infrared node unit
Do not trigger, first pressure node unit and the triggering of second pressure node unit, then NextState is pendant bed；
(2) current state of personnel is detected to sit up, and host node continues to obtain the triggering state of collection information unit, such as
Really the first infrared node unit is not triggered, 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 is not triggered, first pressure node
Unit and second pressure node unit are not triggered, then NextState is to couch；
(3) current state of personnel is detected to be sitting in bedside, and host node continues to obtain the triggering shape of collection information unit
State, if the first infrared node unit and the second infrared node unit are not triggered, first pressure node unit and second pressure section
Dot element has any one triggering, then NextState is standing；If the first infrared node unit triggers, first pressure node list
Member and second pressure node unit are not triggered, then NextState is to sit up；
(4) current state of personnel is detected to stand, and host node continues to obtain the triggering state of collection information unit, such as
Fruit collection information unit is not triggered, then NextState is from bed；If the first infrared node unit and the second infrared node unit
Do not trigger, first pressure node unit and the triggering of second pressure node unit, then NextState is pendant bed；If the second infrared section
Dot element is triggered, and first pressure node unit and second pressure node unit have any one triggering, then NextState is to be sitting in
Bedside；
(5) current state for being detected personnel is doubtful pendant bed, and host node continues to obtain the triggering shape of collection information unit
State, if collection information unit is not triggered, NextState is to couch；If the first infrared node unit triggers, first pressure
Node unit and second pressure node unit are not triggered, then NextState is to sit up；If the first infrared node unit and second
Infrared node unit is not triggered, first pressure node unit and the triggering of second pressure node unit, then NextState is pendant bed；
(6) it is pendant bed to be detected the current state of personnel, 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 collection information unit, if collection information unit is not triggered,
NextState is from bed；
(7) current state for being detected personnel is that, from bed, host node continues to obtain the triggering state of collection information unit, such as
Really the first infrared node unit and the second infrared node unit are not triggered, first pressure node unit and second pressure node unit
There is any one triggering, then NextState is standing.
In general, by the contemplated above technical scheme of the present invention compared with prior art, with following advantages：
(1) apparatus of the present invention, by gathering the triggering state of information unit, judge to be detected personnel's shape using host node
State.Present invention can apply to room from bed monitoring, can also be applied to multiple rooms from bed monitoring, the present invention can have
Help home for destitute, hospital etc. in real time in monitoring ward personnel from bed situation, improve the timely place of the emergencies such as reply pendant bed
Reason ability, has the advantages that to be easily installed, reliable and secure, cheap.
(2) present invention collection information unit includes 4 and node unit, improves recognition accuracy, adds network node
With the demand of control module, the unexpected old man that can happen suddenly in time provides help.
(3) it is preferred, detected during present invention work from bed/return bed process feature operating 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
Operating state helps to judge the current condition of personnel to be detected, effectively increases detection efficiency and the degree of accuracy.
Brief description of the drawings
Fig. 1 is a kind of structural representation that warning device is detected from bed；
Fig. 2 is a kind of floor map that warning device is detected from bed；
Fig. 3 is a kind of scheme of installation that warning device is detected from bed；
Fig. 4 is the structural representation of the first infrared node unit in the embodiment of the present invention；
Fig. 5 is the structural representation of the first infrared node cell enclosure in the embodiment of the present invention；
Fig. 6 is the structural representation of first pressure node unit in the embodiment of the present invention；
Fig. 7 is the structural representation of host node in the embodiment of the present invention；
Fig. 8 is the structural representation of host node shell in the embodiment of the present invention；
Fig. 9 (a) is from bed/return bed process state of couching schematic diagram in the embodiment of the present invention；
Fig. 9 (b) is sat up view from bed/return bed process in the embodiment of the present invention；
Fig. 9 (c) is from bed/return bed process to be sitting in bedside view in the embodiment of the present invention；
Fig. 9 (d) is from bed/return bed process standing view in the embodiment of the present invention；
Fig. 9 (e) is from bed/return bed process from bed view in the embodiment of the present invention；
Fig. 9 (f) is from bed/return bed process pendant bed view in the embodiment of the present invention；
Figure 10 is a kind of flow chart that alarm method is detected from bed；
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 of the figs, identical reference is used for representing identical element or structure, wherein：
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.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
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 each embodiment of invention described below
Not constituting conflict each other can just be mutually combined.
As shown in figure 1, a kind of include from bed detection warning device：Control module, collection information unit, host node, network
Node, collection information unit includes：First infrared node unit, the second infrared node unit, first pressure node unit and
Two pressure node units, collection information unit is used for the triggering state for gathering each node, inputs host node, 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 send the state of personnel to be detected to control mould
Block, the state that control module is used to treat testing staff is monitored.
It is preferred that, as shown in Fig. 2 a kind of include from bed detection warning device：Collection for testing staff from bed state
Information unit, collection information unit includes：First infrared node unit 1, the second infrared node unit 2, first pressure node list
Member 3 and second pressure node unit 4, for receive information and uploads the host node 5 of ZigBee-network node, for each node with
The RS485 buses 6 for communicating and powering between host node, for transmitting host node information to the ZigBee-network node of control module
7, and bed 8.
Number of nodes of the present invention has 4, improves recognition accuracy, adds ZigBee-network node and control module
Demand, the unexpected old man that can happen suddenly in time provides 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
The infrared node unit 2 of acromere dot element 1 and second is horizontally arranged at proper height above the head of a bed of bed 8, and the first infrared section
The horizontal level of dot element 1 is in the centre of bed 8, and the horizontal level of the second infrared node unit 2 is in the bed close to bed 8
At side so that personnel trigger two infrared nodes from bed or when returning bed and produce the time differences；First pressure node unit 3 and second pressure
Node unit 4 is horizontally arranged at the ground of the bunk bed side of bed 8, and first pressure node unit 3 and second pressure node list
The total length and the length of bed 8 of member 4 are roughly the same so that measurement range is wider；Host node 5 is arranged on the bunk bed one of bed 8
The side of side, is easy to link with infrared node and pressure node, receives the triggering information of each node；RS485 buses 6 are arranged on
Bed 8 is leaned to one side, and connects the EBI of all parts, as far as possible hidden, compact to install, and makes overall appearance succinct, ZigBee-network
Node 7 in host node 5 by connecting the corresponding component triggering information transmission that receives host node 5 to control module.
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：First infrared single-chip microcomputer 9, the first infrared distance sensor 10 being connected with the first infrared single-chip microcomputer 9, the first infrared section
The infrared power module 12 of dot element RS485 buses 11 and first, power supply mode is that host node is that total system is powered, and simplifies system
Complexity, node shell designed, designed, overall compact is attractive in appearance, and the first infrared single-chip microcomputer 9 can use model
Stm8s103F3P6 singlechip chip, the first infrared distance sensor 10 is infrared using Sharp GP2Y0A02YK0F diffusing reflection formulas
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 microcomputer 9
The analog voltage of output changes therewith, judges whether the first infrared node unit is triggered according to the size of analog voltage,
First infrared node unit R S485 buses 11 use four-wire system full-duplex communication mode, and wherein logical signal uses differential signal
Transmission, earth signal is connected with miscellaneous part earth signal, and power supply signal is connected with miscellaneous part power supply signal, plays total system simultaneously
Power supply function, the first power module 12 uses ASM1117 voltage stabilizing chip circuits.
As shown in figure 5, the first infrared node cell enclosure 13 is fixed on metope using screw, is difficult to take off using T-shaped
Fall, compact overall structure is attractive in appearance, for encapsulating the first infrared single-chip microcomputer and its connected all parts；Wherein the first infrared node
Cell enclosure probe interface 14 is used for the transmitting terminal probe and receiving terminal probe for drawing 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 EBI 15 is used
In drawing the first infrared node unit R S485 buses 11 to RS485 buses 6, information transfer 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 microcomputer 16, the resistance-type first pressure sensor 17 being connected with first pressure single-chip microcomputer 16, the first pressure
Power node unit RS485 buses 18 and first pressure power module 19, and encapsulate first pressure single-chip microcomputer 16 and its connected
The first pressure pad 20 of all parts；
In embodiments of the present invention, first pressure single-chip microcomputer 16 can use model stm8f10f3p6 monolithic movement
Piece, resistance-type first pressure sensor 17 embeds two layers of tin-foil plate, fills equally distributed circle between two layers of tin-foil plate up and down and leads to
Hole sponge, when there is pressure to act on pressure pad, two layers of tin-foil plate is in contact by round tube hole up and down, first pressure single-chip microcomputer
The analog voltage of 16 delivery outlet output changes therewith, judges whether pressure node is touched according to the size of analog voltage
Hair, first pressure node unit RS485 buses 18 use four-wire system half-duplex operation mode, and wherein logical signal is believed using difference
Number transmission, earth signal is connected with other module earth signals, and power supply signal is connected with other modular power source signals, plays total system same
When power supply function, first pressure power module 19 use ASM1117 voltage stabilizing chip circuits, first pressure pad 20 use coat of paint material
Material, is formed by needlework sewing, with softness, waterproof, anti-skidding function, and is unlikely to deform, easy cleaning is arranged, wherein first
Pressure pad RS485 interfaces 21 are used to draw first pressure node unit RS485 buses 18 to RS485 buses 6, carry out information transfer
With power supply supply.
As shown in fig. 7, host node includes：Host node single-chip microcomputer 22, the host node RS485 being connected with host node single-chip microcomputer 22
Bus 23, ZigBee module 24, portable power source module 25.
As shown in figure 8, host node shell 26 is used to encapsulate host node single-chip microcomputer 22 and its connected all parts.
In embodiments of the present invention, host node single-chip microcomputer 22 can use model stm8f10f3p6 singlechip chip,
And with switching device, system-wide work and stopping are can control, host node RS485 buses 23 use four-wire system full-duplex communication
Mode, wherein logical signal are transmitted using differential signal, and earth signal is connected with other module earth signals, power supply signal and other portions
Part power supply signal is connected, and plays total system power supply function simultaneously, the mode of operation that host node RS485 buses 23 are inquired using samsara
Refresh the first infrared node unit 1, the second infrared node unit 2, first pressure node unit 3 and second pressure node list successively
The triggering state information of member 4, and send and collect to host node 5, ZigBee module 24 uses CC2530 integrated chip modules, is used for
Each sensor information that host node 5 is received is sent to ZigBee-network node 7, is easy to control module to monitor, portable power source
The small volume of module 25, is easy to encapsulation, capacity is 2600mA, is that total system is powered, host node shell 26 is fixed on using screw
Leaning to one side for bed 8, difficult for drop-off, compact overall structure is attractive in appearance, and is easy to be connected RS485 buses 6 with other modules, wherein moving
The traverse of power module 25 is encapsulated, and host node shell charge port 27 is used to charge for portable power source module 25, host node shell bus
Interface 28 is used to draw host node RS485 buses 23 to RS485 buses 6, carries out information transfer and power supply supply, host node shell
Switch mouth 29 is used for the switch for drawing host node single-chip microcomputer 22, is easy to switch and initialize total system, host node shell ZigBee
Interface 30 is used for the antenna for drawing ZigBee module 24, strengthens signal intensity.
Detect includes from bed/time bed process feature operating state：Couch 31, sit up 32, be sitting in bedside 33, stand 34, from
Bed 35, falls bed 36.The single-chip microcomputer of each node gathers the output analog voltage of sensor, judges that first is infrared by single-chip microcomputer 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 couches 31 lies in the middle section of bed 8 for personnel, shown in such as Fig. 9 (a), now
Any node will not be triggered；As shown in Fig. 9 (b), state sits up 32 is sitting in the middle section of bed 8 for personnel, now 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 sat for personnel
In the side of the bunk bed of bed 8, now personnel's body blocks the front of the second infrared node unit 2, and pin steps down in first pressure section
On dot element 3 or second pressure node unit 4, the first infrared node unit 2 of triggering and first pressure node unit 3 or second are pressed
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, now personnel
Pin is stepped down on first pressure node unit 3 or second pressure node unit 4, triggering 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 stood in position farther out, will not now trigger any section
Point；As shown in Fig. 9 (f), state pendant bed 36 is that personnel fall to ground, and now personnel's body is pressed in first pressure node unit 3
On second pressure node unit 4, while triggering first pressure node unit 3 and second pressure node unit 4.
From bed ,/time bed process feature operating state is personnel from bed/returns several typical actions occurred during bed
State, can be detected by sensor node work in combination, and extracting these characteristic action states contributes to judgement personnel's current
Condition, effectively increases detection efficiency and the degree of accuracy.
As shown in Figure 10, it is a kind of to make use of FSM algorithms from bed detection alarm method, including：
From bed detect FSM algorithms by detect from bed/return bed process feature operating state based on, with limited state and
The behavior founding mathematical models such as transfer and action between these states, enumerating all characteristic action states according to actual conditions can
The tandem that can occur, the actual body situation of personnel is judged by different tandems.
In embodiments of the present invention, represent 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 represents triggering, and N-state represents not trigger, and X state representations are appointed
Meaning state；First pressure node unit 3 and second pressure node unit 4 have such as lower node：P-state represents triggering, N-state table
Show and do not trigger, X state representation free positions；O state represents total system free position, | | state representation total system or state；Tool
Body algorithm comprises the steps：
(1) current state of personnel is detected to couch；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 are not triggered, into step (2)；If first is red
Acromere dot element is not triggered, and the second infrared node unit triggers, first pressure node unit and second pressure node unit are not touched
Hair, into step (5)；If the first infrared node unit and the second infrared node unit are not triggered, first pressure node unit
Triggered with second pressure node unit, into step (6)；
(2) current state of personnel is detected to sit up, and host node continues to obtain the triggering state of collection information unit, such as
Really the first infrared node unit is not triggered, the second infrared node unit triggers, first pressure node unit and second pressure node
Unit has any one triggering, into step (3)；If the first infrared node unit is not triggered, the second infrared node unit is to appoint
Meaning state, first pressure node unit and second pressure node unit are not triggered, return to step (1)；
(3) current state of personnel is detected to be sitting in bedside, and host node continues to obtain the triggering shape of collection information unit
State, if the first infrared node unit and the second infrared node unit are not triggered, first pressure node unit and second pressure section
Dot element has any one triggering, into 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 are not triggered, return to step (2)；
(4) current state of personnel is detected to stand, and host node continues to obtain the triggering state of collection information unit, such as
Fruit collection information unit is not triggered, into step (7)；If the first infrared node unit and the second infrared node unit are not touched
Hair, first pressure node unit and the triggering of second pressure node unit, into 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 to touch
Hair, return to step (3)；
(5) now judge to be detected the doubtful pendant bed of personnel, host node continues to obtain the triggering state of collection information unit, such as
Fruit collection information unit is not triggered, return to 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 are not triggered, return to step (2)；If the first infrared section
Dot element and the second infrared node unit are not triggered, first pressure node unit and the triggering of second pressure node unit, into step
Suddenly (6)；
(6) it is pendant bed to be detected the current state of personnel, and host node is sent out by ZigBee module to ZigBee-network node
Warning message is sent, reminds control module to implement emergent management, host node continues to obtain the triggering state of collection information unit, if
Collection information unit is not triggered, into step (7)；
(7) current state for being detected personnel is that, from bed, host node continues to obtain the triggering state of collection information unit, such as
Really the first infrared node unit and the second infrared node unit are not triggered, first pressure node unit and second pressure node unit
There are any one triggering, return to step (4).
Further, described distance threshold scope is 1m-1.5m, and each infrared collecting time interval is 10ms.
In order to illustrate further each sensor node status information transmission process in the embodiment of the present invention, 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 buses and pressure node RS485 buses are set to receive shape
State, the order for the inquiry status information that host node is sent is received by RS485 buses, if receiving inquiry command, into step
Suddenly (S2)；If not receiving inquiry command, step (S1) is maintained；
(S2) infrared node RS485 buses and pressure node RS485 buses are set to transmission state, by the first infrared node
Unit, the second infrared node unit, first pressure node unit and second pressure node unit triggering state it is total by RS485
Line is sent to host node, after the completion of sending information, return to step (S1).
In order to illustrate further primary node status information reception process in the embodiment of the present invention, and ZigBee-network section
The working method of point, is described in detail host node in conjunction with Figure 12 and receives each sensor node status information and transmission to ZigBee nets
The implementation process of network node is as follows：
(T1) after systematic parameter initialization, house dog judges and state is recovered, and sets the host node RS485 of host node total
Line is set to transmission state, to the first infrared node unit, the second infrared node unit, first pressure node unit and the second pressure
Power node unit sends the order of inquiry status information successively, after being sent completely, and host node RS485 buses are set to receive shape
State；If each sensor node receives inquiry command, into step (T2)；If sensor node does not receive inquiry life
Order, into 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, sends to host node, and judges personnel's current state according to from bed detection FSM algorithms, if personnel
State is pendant bed, into step (T4)；If personnel state is not pendant bed, return to step (T1)；
(T3) do not receive inquiry command sensor node will not more new state, host node carries out the sensor node
Mark and counting, if mark and counting reach 3 times, send this information to ZigBee-network node, notify control module to enter
Row processing；If mark and counting are not up to 3 times, return to step (T1)；
(T4) host node sends the information that personnel fall bed to ZigBee-network node, notifies that control module is handled,
After the completion of processing, return to 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, it is not used to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the invention etc., it all should include
Within protection scope of the present invention.
Claims (8)
1. a kind of detect warning device from bed, it is characterised in that including：Control module, collection information unit, host node, network
Node,
The collection information unit includes：First infrared node unit, the second infrared node unit, first pressure node unit and
Second pressure node unit,
The collection information unit is used for the triggering state for gathering 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 send the state of personnel to be detected to control module,
The state that the control module is used to treat testing staff is monitored, if personnel to be detected fall bed, starts alarm.
2. it is as claimed in claim 1 a kind of from bed detection warning device, it is characterised in that the collection information unit and main section
Point is by wired connection, and host node and control module are connected by network node.
A kind of detect warning device from bed 3. as claimed in claim 1, it is characterised in that the first infrared node unit with
The structure of second infrared node unit is identical, and the first infrared node unit includes：First infrared single-chip microcomputer 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 output analog voltage of single-chip microcomputer, the first infrared node unit when being more than the first preset value of analog voltage is touched
Hair.
A kind of detect warning device from bed 4. as claimed in claim 1, it is characterised 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 microcomputer 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 output analog voltage of machine, first pressure node unit when being more than the second preset value of analog voltage is triggered.
5. it is as claimed in claim 1 a kind of from bed detection warning device, it is characterised in that the host node includes：Host node
Single-chip microcomputer, transport module, portable power source module, transport module are used to send host node information to network node.
6. it is as claimed in claim 1 a kind of from bed detection warning device, it is characterised in that the first infrared node unit peace
In the middle of the head of a bed, the second infrared node unit is arranged on head of a bed edge, first pressure node unit and second pressure node list
Member is arranged on the ground of bed bunk bed side, and network node and host node are arranged on the side of the bunk bed side of bed.
7. it is as claimed in claim 6 a kind of from bed detection warning device, it is characterised in that collection is utilized when described device works
The triggering state of information unit, the state of the detected personnel detected includes：Couch, sit up, being sitting in bedside, it is standing, doubtful
Fall bed, pendant bed and from bed.
8. it is as claimed in claim 7 a kind of from bed detection warning device, it is characterised in that when described device works, including：
(1) current state of personnel is detected to couch, and host node continues to obtain the triggering state of collection information unit, if the
One infrared node unit triggers, first pressure node unit and second pressure node unit are not triggered, then NextState is to sit up；
If the first infrared node unit is not triggered, the second infrared node unit triggers, first pressure node unit and second pressure section
Dot element is not triggered, then NextState is doubtful pendant bed；If the first infrared node unit and the second infrared node unit are not touched
Hair, first pressure node unit and the triggering of second pressure node unit, then NextState is pendant bed；
(2) current state of personnel is detected to sit up, and host node continues to obtain the triggering state of collection information unit, if the
One infrared node unit is not triggered, 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 is not triggered, first pressure node unit
Do not triggered with second pressure node unit, then NextState is to couch；
(3) current state of personnel is detected to be sitting in bedside, and host node continues to obtain the triggering state of collection information unit, such as
Really the first infrared node unit and the second infrared node unit are not triggered, first pressure node unit and second pressure node unit
There is any one triggering, then NextState is standing；If the first infrared node unit triggers, first pressure node unit and
Two pressure node units are not triggered, then NextState is to sit up；
(4) current state of personnel is detected to stand, and host node continues to obtain the triggering state of collection information unit, if adopted
Collection information unit is not triggered, then NextState is from bed；If the first infrared node unit and the second infrared node unit are not touched
Hair, first pressure node unit and the triggering of second pressure node unit, then NextState is pendant 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 for being detected personnel is doubtful pendant bed, and host node continues to obtain the triggering state of collection information unit, such as
Fruit collection information unit is not triggered, then NextState is to couch；If the first infrared node unit triggers, first pressure node list
Member and second pressure node unit are not triggered, then NextState is to sit up；If the first infrared node unit and the second infrared section
Dot element is not triggered, first pressure node unit and the triggering of second pressure node unit, then NextState is pendant bed；
(6) it is pendant bed to be detected the current state of personnel, 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 collection information unit, it is next if collection information unit is not triggered
State is from bed；
(7) current state for being detected personnel is that, from bed, host node continues to obtain the triggering state of collection information unit, if the
One infrared node unit and the second infrared node unit are not triggered, and first pressure node unit and second pressure node unit, which have, appoints
One triggering of meaning, then NextState is standing.
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| CN107170198B (en) | 2019-07-09 |
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