CN101566832A - Intelligent controller for multifunctional anti-bedsore care bed - Google Patents
Intelligent controller for multifunctional anti-bedsore care bed Download PDFInfo
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- CN101566832A CN101566832A CNA2009100137164A CN200910013716A CN101566832A CN 101566832 A CN101566832 A CN 101566832A CN A2009100137164 A CNA2009100137164 A CN A2009100137164A CN 200910013716 A CN200910013716 A CN 200910013716A CN 101566832 A CN101566832 A CN 101566832A
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Abstract
The invention discloses an intelligent controller for a multifunctional anti-bedsore care bed, which solves the problems of poor safety, high cost, inconvenient operation and the like of the prior control device for an anti-bedsore care bed, and has the advantages of friendly human-machine interface, convenient operation, perfect error protective measures, low manufacturing cost and the like. The structure comprises that a control panel circuit performs liquid crystal display and keystroke operation treatment; a master control board circuit receives an operating command from the control panel circuit through a master control core circuit, and an output drive circuit of the master control board is connected with a relay output board circuit; a signal input circuit detects the bed body position; the relay output board circuit receives a control signal from the output drive circuit to control the motion of a motor; simultaneously, a multi-motor operation detection circuit and a multi-motor fault detection circuit send the detected operation and fault signals to the signal input circuit; and the control panel circuit exchanges information with the master control board circuit through RS485 serial communication to form a master-slave mode control structure.
Description
Technical field
The present invention relates to a kind of care bed control device, relate in particular to a kind of intelligent controller for multifunctional anti-bedsore care bed.
Background technology
Multifunctional bedsore-proof nursing bed is to aim at that paralytic and long-term bed can not be taken care of oneself patient and a kind of bed accessory of designing, have automatically stand up, bed surface lifts multinomial functions such as stern and left and right sides translation alternately, automatically, can reduce the pressing time of patient body pressurized position muscle effectively, help blood circulation and aeration-drying, avoid the generation of pressure ulcer, alleviate the patient suffering, also can alleviate the labour intensity that the patient accompanies and attends to greatly simultaneously.Anti-bedsore care bed in the past controller adopts Programmable Logic Controller (PLC) as control module more, based on sequential control, lacks the emergency protection measure, do not have display interface intuitively, and cost is higher.
Summary of the invention
Purpose of the present invention is exactly bad in order to solve at present anti-bedsore care bed control device security; cost is higher; problems such as operation inconvenience; provide a kind of have simple in structure; man-machine interface close friend; easy to operate, the intelligent controller for multifunctional anti-bedsore care bed of advantage such as the emergency protection measure is perfect, and cost is low.
For achieving the above object, the present invention adopts following technical scheme:
A kind of intelligent controller for multifunctional anti-bedsore care bed, it comprises control panel circuit, master control board circuit and relay output board circuit; Wherein,
The control panel circuit carries out liquid crystal display and button operation, and to master control board circuit transmit operation order, and the operating state of retaking of a year or grade master control board circuit shows in real time;
The master control board circuit is connected with relay output board circuit by output driving circuit by the operational order of master control core circuit reception control panel circuit; Carry out a body position by signal input circuit and detect, ensure that the bed body can not cause damage because of misoperation;
Relay output board circuit receives the output driving circuit control signal, controls a plurality of batching spindle motors and the work of a plurality of direct current push-rod electric machine that is installed on the body by many circuit for controlling motor; Operation and fault-signal that while many motors operation detecting circuit and many electrical faults testing circuit will detect are sent into signal input circuit;
By the mode exchange message of RS485 serial communication, form the control structure of master-slave mode between control panel circuit and the master control board circuit.
Described control panel circuit comprises single-chip microcomputer U01, hardware watchdog U02, RS485 serial ports modular converter U03, LCD MODULE and 4*4 keyboard array; The P1 mouth of single-chip microcomputer U01 connects the 4*4 keyboard array and carries out the key scan detection; P0 mouth bus is connected with the bus of LCD MODULE, and the liquid crystal control signal wire inserts the P2 mouth; Serial line interface RXD, the TXD of single-chip microcomputer U01 inserts U03 and carries out the RS485 level conversion, by P3.3 mouth control transmission and the switching that receives of U01; Hardware watchdog U02 finishes electrification reset and program run monitoring, does not produce feeding-dog signal at the P3.2 mouth and sends reset signal after 2.5 seconds, guarantees that U01 does not crash; The control panel circuit sends action command according to the keyboard operation order to the master control board circuit as main frame, and the operating state data of continuous retaking of a year or grade master control board circuit, shows with hanzi form by LCD MODULE.
Described master control core circuit comprises that single-chip microcomputer U1, hardware watchdog U2, the conversion of RS485 serial ports U3, data address latch U4, power down keep RAM U5, write signal code translator U6 and read signal code translator U7.U1, U4, U5 form the single-chip data memory read write circuit of standard, and U5 is not power down of the 2K byte RAM of interior charged pool, do not have and write indegree restriction, the various real-time status data that are used for preserving operational process; Hardware watchdog U2 finishes electrification reset and program run monitoring, does not produce feeding-dog signal at the P3.5 of U1 mouth and sends reset signal after 2.5 seconds, guarantees that U1 does not crash; Serial line interface RXD, the TXD of U1 inserts U3 and carries out the RS485 level conversion, the master control board circuit connects as slave and is operated in accepting state at ordinary times, send with the switching that receives and control by P3.4, receive the order of control panel circuit after, carry out corresponding operating and foldback status information; Read signal code translator U7 exports 8 tunnel gating signals by the RD read signal combination decoding of address wire and U1, can read the input of 8*8 way switch amount signal at most; Write signal code translator U6 exports 4 tunnel gating signals by the WR signal combination decoding of address wire and U1, and maximum can be exported 4*8 way switch amount signal.
Described signal input circuit comprises 6 road signals of two angular transducers, each angular transducer is installed in respectively on the body batching spindle motor, the pulse signal of each angular transducer output expression turned position, turn signal and initial point signal totally 3 tunnel, two angular transducers all are connected with latch U10,1024 pulses of angular transducer revolution output, pulse signal pulsewidth＞80ms, the every 5ms of U1 regularly reads pulse signal, carry out plus-minus counting according to turn signal and initial point signal number of pulses, being saved to power down keeps among the RAM U5, thereby determine the batching shaft position, and guaranteed that power down re-powers back U1 and still can judge the batching shaft position; Signal input circuit also comprises seven pairs of travel switches, and they are installed on seven electric pushrods of a body, and every pair of travel switch is formed by a high-order travel switch and a low level travel switch; Each is connected with latch U9 with latch U8 travel switch, and latch U8 and latch U9 are as input buffering, and under the control of U1 to read decoder U7 output gating signal, signal condition is read in timesharing;
The switching value signal of direct current push-rod electric machine run signal and fault-signal harvester generation is simultaneously sent into latch U11 and latch U12, under the gating signal control of read decoder U7, regularly operation and the fault-signal to seven road push-rod electric machines reads judgement to U1 by U11 and U12.
Described output driving circuit comprises the driving of 9 pairs of relay K 1, K2, on 2 batching spindle motors and 7 direct current push-rod electric machines a pair of relay is installed respectively; All relays are driven by 3 groups of driving circuits, and every group of identical and each self-driven 7 relay of drives structure, the output latch latch signal of every group of driving circuit are respectively from WY0, WY1, the WY2 of write decoder U6;
Wherein the structure of one group of driving circuit comprises an output latch U13, No. 7 photoelectrical couplers, 7 road driver U14 and corresponding resistors, U1 sends relay action signal, under the gating signal WY0 of write decoder U6 output control, be latched into the output terminal of U13, transmit signals to the input end of the driver U14 of 24V power work by photoelectrical coupler, 7 actuatings of relay of control after U14 drives, resistance R P6 is an optocoupler input current-limiting resistance, resistance R P5, RP7 form divider resistance, so that the input high-low level of U14 reaches the level requirement of regulation.
Described many circuit for controlling motor have 9 the tunnel, each road includes a pair of relay K 1, K2, the move left and right of elongation, shortening and the bed surface of the rotating of their switching controls direct current push-rod electric machines or batching spindle motor and then control push rod, the normally closed contact interlocking connection of relay K 1, K2 cause power supply short circuit when preventing misoperation;
Operation detecting circuit only detects push-rod electric machine, have 7 the tunnel, each road includes diode D1, the D2 that is connected in the direct current push-rod electric machine loop, current-limiting resistance R4 and optocoupler U30, electric current when motor normally moves can produce pressure drop at D1, D2 two ends, after the R4 current limliting, can make optocoupler U30 input end luminous, produce run signal at output terminal; If not this run signal generation then can be judged to be the electric motor loop open circuit during operation of direct current push-rod electric machine;
Failure detector circuit only detects push-rod electric machine, have 7 the tunnel, each road comprises the resettable fuse R3 that is connected in the electric motor loop, current-limiting resistance R5 and optocoupler U31, electric current is in normal range during the motor operation, and the resistance of R3 is very little, and the pressure drop of generation is also very little, deficiency is so that the input end of optocoupler U31 is luminous, and optocoupler output terminal no signal is exported; When overload or short trouble took place motor, electric current significantly increased, and it is big that the resistance of R3 becomes rapidly, thereby produce bigger pressure drop at two ends, and this voltage makes optocoupler U31 input end luminous after the R5 current limliting, produces fault-signal at output terminal; These signals are monitored in the collection of master control board circuit signal input circuit, suspend the bed body and carry out action after failure judgement takes place, and avoid causing the damage of a body, and failure message are delivered to control panel carry out audible alarm and the demonstration of LCD failure message.Intelligent controller of the present invention aims at multifunctional bedsore-proof nursing bed and development and Design, as controlling core, can control 7 electric pushrods of a body and forward and reverse motion of 2 batching spindle motors respectively with single-chip microcomputer by relay in conjunction with hardware circuits such as peripheral isolation drive; Controller detects bed body action position and batching axle rotational angle simultaneously, according to different bed body action requirements, controls each mechanical hook-up coordination, finishes every body action function.
Characteristics of the present invention are:
1. controller adopts the composition structure of master-slave mode, has reasonably distributed control function, has simplified the hardware configuration of each several part, has alleviated the work of treatment of single-chip microcomputer.
2. adopt the Chinese character LCD, ocular and clear ground shows course of action, bed body position and the failure message of bed body.
3. adopt angular transducer control control batching shaft position, overcome the cumulative errors that is produced with time control, accurately reliable.
4. adopt testing circuits such as PTC resettable fuse and current detecting, by the overload fault and the open fault of each electric pushrod of single-chip microcomputer intelligent decision, but fast shut-off output stops action, guarantees that the bed body can not destroy because of mechanical fault causes bed structure.
5. adopt DC-DC insulating power supply, photoelectricity coupling, protection from transients diode devices such as (TVS), solved the strong interference that is produced when relay connects the DC load break-make effectively, guaranteed the reliability service of controller.
6. have the power-failure memory function, if the power down in the course of the work of bed body, controller can write down breakpoint automatically, after restoring electricity, by " time-out/continuation " key, can continue to carry out former action from breakpoint location.
7. the compound keys operation by regulation when powering on can enter the stand-alone debugging state, and each mechanical hook-up single movement of may command is convenient to debugging and maintenance.
The invention has the beneficial effects as follows: this intelligent controller has simple and direct guidance panel intuitively; various operational orders only need one-key operation; possesses Chinese character liquid crystal display window simultaneously; the duty and the positional information that can dynamically show a body; man-machine interface close friend; easy to operate, the emergency protection measure is perfect, and cost is low.
Description of drawings
Fig. 1 is an electrical diagram of the present invention;
Fig. 2 is a control panel circuit electrical schematic diagram;
Fig. 3 is a master control core circuit electrical schematic diagram;
Fig. 4 is the signal input circuit electrical schematic diagram;
Fig. 5 is the output driving circuit electrical schematic diagram;
Fig. 6 is a relay output board circuit electrical schematic diagram;
Fig. 7 is the plan structure synoptic diagram of existing bed body;
Fig. 8 is the side structure synoptic diagram of Fig. 7.
Wherein, 1. control panel circuit, 2. master control board circuit, 3. relay output board circuit, 4. master control core circuit, 5. signal input circuit, 6. isolated from power mu balanced circuit, 7. output driving circuit, 8. operation detecting circuit, 9. failure detector circuit, 10. batching spindle motor, 11. the direct current push-rod electric machine, circuit for controlling motor more than 12..
Embodiment
The invention will be further described below in conjunction with accompanying drawing and embodiment.
Among Fig. 1, it comprises control panel circuit 1, master control board circuit 2 and relay output board circuit 3; Wherein,
Master control board circuit 2 is connected with relay output board circuit 3 by output driving circuit 7 according to action request by the operational order of master control core circuit 4 reception control panel circuit 1, coordinates forward and reverse motion of each mechanical hook-up of control bed body; Carry out a body position by signal input circuit 5 and detect, ensure that the bed body can not cause damage because of misoperation;
Relay output board circuit 3 receives output driving circuit 7 control signals, works by a plurality of batching spindle motors 10 and a plurality of direct current push-rod electric machine 11 that many circuit for controlling motor controls are installed on the body; Operation and fault-signal that while many motors operation detecting circuit 8 and many electrical faults testing circuit 9 will detect are sent into signal input circuit 5;
By the mode exchange message of RS485 serial communication, form the control structure of master-slave mode between control panel circuit 1 and the master control board circuit 2.
Among Fig. 2, control panel circuit 1 mainly is made up of single-chip microcomputer U01, hardware watchdog U02, RS485 serial ports conversion U03, LCD MODULE and 4*4 keyboard array.The P1 mouth of single-chip microcomputer U01 connects the 4*4 push-button array and carries out the key scan detection; P0 mouth bus is connected with the bus of LCD, and the liquid crystal control signal wire inserts the P2 mouth; Serial line interface RXD, the TXD of single-chip microcomputer U01 inserts U03 and carries out the RS485 level conversion, by P3.3 mouth control transmission and the switching that receives of U01.Hardware watchdog U02 finishes electrification reset and program run monitoring, does not produce feeding-dog signal at the P3.2 mouth and sends reset signal after 2.5 seconds, guarantees that U01 does not crash.LCD LCD can show 2*10 Chinese character, and interior band Hanzi font library is supported parallel bus interface.Working method be control panel as main frame, send action command according to the keyboard operation order to master control board, and the continuous data such as operating state of retaking of a year or grade master control board, LCD shows with hanzi form by liquid crystal.
Among Fig. 3, master control borad core circuit 4 is the core of master control board, mainly keeps RAM U5, write signal code translator U6 and read signal code translator U7 to form by single-chip microcomputer U1, hardware watchdog U2, the conversion of RS485 serial ports U3, data address latch U4, power down.U1, U4, U5 form the single-chip data memory read write circuit of standard, and not power down of the 2K byte RAM of charged pool in U5 selects for use does not write the indegree restriction, the various real-time status data that are used for preserving operational process.Hardware watchdog U2 finishes electrification reset and program run monitoring, does not produce feeding-dog signal at the P3.5 of U1 mouth and sends reset signal after 2.5 seconds, guarantees that U1 does not crash.Serial line interface RXD, the TXD of U1 insert U3 and carry out the RS485 level conversion, and master control borad connects as slave and is operated in accepting state at ordinary times, send with the switching that receives to be controlled by P3.4, receive the order of control panel after, carry out corresponding operating and foldback status information.Because the position input signal of bed body and driving output are a lot, the interface resource on the single-chip microcomputer sheet can not meet the demands, and has therefore carried out the expansion of input/output port.U7 by address wire and RD read signal combination decoding, can export 8 tunnel gating signals for reading the input signal code translator, can read the input of 8*8 way switch amount signal at most.U6 by address wire and the decoding of WR signal combination, can export 4 tunnel gating signals for writing the output signal code translator, and maximum can be exported 4*8 way switch amount signal.By expanding the quantitative requirement that has satisfied the input and output of bed body, and divided RAM, read to import and write the address realm of output by the address wire unification, not having the address to intersect conflicts, as long as to different addresses MOVX instruction manipulation, can finish functions such as different reading and writing datas and input and output during programming.
The purpose of selecting not power down RAM for use is to consider when having a power failure suddenly in the bed body action, can preserve the operating state of power-cut time, as move kind, working time and angle position etc., the bed body enters halted state automatically when re-powering, by behind " time-out/continuation " key, the bed body can continue to carry out the preceding uncompleted action of power down, avoids the position out of control.
Among Fig. 4, signal input circuit 5 is the stimulus part of master control board, mainly is made up of external input signal and input latch.The bed body has used 7 electric pushrods altogether, every push rod all has high-order and 2 travel switch signals of low level, has 14 way switch amount signals like this, by 2 No. 8 latch U8 and U9 as input buffering, under the control of U1 to read decoder output gating signal, signal condition is read in timesharing.The left and right sides translation motion of bed body is finished by 2 batching spindle motors, in order accurately to control the shift position, be equipped with angular transducer respectively, each angular transducer output signal is: pulse signal, turn signal and the initial point signal totally 3 tunnel of expression turned position is connected with 2 angular transducer signals by the U10 latch.Exportable 1024 pulses of angular transducer revolution, because the operation of batching axle is slower, pulse signal pulsewidth＞80ms, so method that adopts every 5ms regularly to read, in conjunction with software digital filter acquisition pulse signal, carry out plus-minus counting according to turn signal and initial point signal number of pulses, be saved among the not power down RAM U5, thereby determine the batching shaft position, and guaranteed that power down re-powers back U1 and still can judge the batching shaft position.In order to monitor the ruuning situation of motor, also 7 road push-rod electric machine run signal and fault-signal have been carried out acquisition testing, signal is the switching value signal, and U1 under the gating signal control of read decoder, regularly reads judgement by latch U11 and U12.
Among Fig. 5, output driving circuit 7 is the output control part of master control board, wherein 7 the road drives the output circuit composition as shown in Figure 5, mainly is made up of output latch U13, photoelectrical coupler, 7 road driver U14 and corresponding resistor.Because control main board is the 5V power work, relay is the 24V power work, the control signal of U1 output need just can make the relay regular event through overdrive circuit, main control circuit produced when reducing the actuating of relay and disturb, 5V and 24V working power adopt mutual isolated form, therefore use the photoelectricity coupled circuit that control signal is sent to driving circuit.The actuating signal that U1 sends under the gating signal WY0 of write decoder output control, is latched into the output terminal of U13, transmits signals to the input end of the driver U14 of 24V power work by photoelectrical coupler, drives the back pilot relay through U14 and moves.Resistance R P6 is an optocoupler input current-limiting resistance, and resistance R P5, RP7 form divider resistance, so that the input high-low level of U14 reaches the level requirement of regulation.
Among Fig. 6, many circuit for controlling motor 12 have 9 the tunnel, each road includes a pair of relay K 1, K2, the move left and right of elongation, shortening and the bed surface of the rotating of their switching controls direct current push-rod electric machines or batching spindle motor and then control push rod, the normally closed contact interlocking connection of relay K 1, K2 cause power supply short circuit when preventing misoperation;
8 of operation detecting circuits detect push-rod electric machine, have 7 the tunnel, each road includes diode D1, the D2 that is connected in the direct current push-rod electric machine loop, current-limiting resistance R4 and optocoupler U30, electric current when motor normally moves can produce pressure drop at D1, D2 two ends, after the R4 current limliting, can make optocoupler U30 input end luminous, produce run signal at output terminal; If not this run signal generation then can be judged to be the electric motor loop open circuit during operation of direct current push-rod electric machine;
9 of failure detector circuits detect push-rod electric machine, have 7 the tunnel, each road comprises the resettable fuse R3 that is connected in the electric motor loop, current-limiting resistance R5 and optocoupler U31, electric current is in normal range during the motor operation, and the resistance of R3 is very little, and the pressure drop of generation is also very little, deficiency is so that the input end of optocoupler U31 is luminous, and optocoupler output terminal no signal is exported; When overload or short trouble took place motor, electric current significantly increased, and it is big that the resistance of R3 becomes rapidly, thereby produce bigger pressure drop at two ends, and this voltage makes optocoupler U31 input end luminous after the R5 current limliting, produces fault-signal at output terminal; These signals are monitored in the collection of master control board circuit signal input circuit, suspend the bed body and carry out action after failure judgement takes place, and avoid causing the damage of a body, and failure message are delivered to control panel carry out audible alarm and the demonstration of LCD failure message.
Two batching spindle motors do not have special-purpose operation and failure detector circuit, and their detection is finished in conjunction with the angular transducer signal.When the batching spindle motor normally moves, angular transducer will send pulse and turn signal, can judge the malfunction of batching spindle motor by software approach, if do not have corresponding pulse signal to produce during the operation of batching spindle motor, then can be judged as the batching spindle motor breaks down, suspend and carry out the bed body action, carry out corresponding alarm.Emergency protection has just comprised all motors of bed body like this, and safeguard measure is perfect.
The 12V and the 5V DC voltage of 6 outputs of isolated from power mu balanced circuit and 24V isolated from power.
Fig. 7, Fig. 8 have provided the structural representation of existing bed body, and wherein batching spindle motor 10 is distributed in the both sides of a body, and direct current push-rod electric machine 11 has 7, and wherein the both sides, front and back end of bed body respectively have one, place three respectively at bed body middle part.
Claims (6)
1. an intelligent controller for multifunctional anti-bedsore care bed is characterized in that, it comprises control panel circuit, master control board circuit and relay output board circuit; Wherein,
The control panel circuit carries out liquid crystal display and button operation, and to master control board circuit transmit operation order, and the operating state of retaking of a year or grade master control board circuit shows in real time;
The master control board circuit is connected with relay output board circuit by output driving circuit by the operational order of master control core circuit reception control panel circuit; Carry out a body position by signal input circuit and detect, ensure that the bed body can not cause damage because of misoperation;
Relay output board circuit receives the output driving circuit control signal, controls a plurality of batching spindle motors and the work of a plurality of direct current push-rod electric machine that is installed on the body by many circuit for controlling motor; Operation and fault-signal that while many motors operation detecting circuit and many electrical faults testing circuit will detect are sent into signal input circuit;
By the mode exchange message of RS485 serial communication, form the control structure of master-slave mode between control panel circuit and the master control board circuit.
2. intelligent controller for multifunctional anti-bedsore care bed as claimed in claim 1 is characterized in that, described control panel circuit comprises single-chip microcomputer U01, hardware watchdog U02, RS485 serial ports modular converter U03, LCD MODULE and 4*4 keyboard array; The P1 mouth of single-chip microcomputer U01 connects the 4*4 keyboard array and carries out the key scan detection; P0 mouth bus is connected with the bus of LCD MODULE, and the liquid crystal control signal wire inserts the P2 mouth; Serial line interface RXD, the TXD of single-chip microcomputer U01 inserts U03 and carries out the RS485 level conversion, by P3.3 mouth control transmission and the switching that receives of U01; Hardware watchdog U02 finishes electrification reset and program run monitoring, does not produce feeding-dog signal at the P3.2 mouth and sends reset signal after 2.5 seconds, guarantees that U01 does not crash; The control panel circuit sends action command according to the keyboard operation order to the master control board circuit as main frame, and the operating state data of continuous retaking of a year or grade master control board circuit, shows with hanzi form by LCD MODULE.
3. intelligent controller for multifunctional anti-bedsore care bed as claimed in claim 1, it is characterized in that described master control core circuit comprises that single-chip microcomputer U1, hardware watchdog U2, the conversion of RS485 serial ports U3, data address latch U4, power down keep RAM U5, write signal code translator U6 and read signal code translator U7; U1, U4, U5 form the single-chip data memory read write circuit of standard, and U5 is not power down of the 2K byte RAM of interior charged pool, do not have and write indegree restriction, the various real-time status data that are used for preserving operational process; Hardware watchdog U2 finishes electrification reset and program run monitoring, does not produce feeding-dog signal at the P3.5 of U1 mouth and sends reset signal after 2.5 seconds, guarantees that U1 does not crash; Serial line interface RXD, the TXD of U1 inserts U3 and carries out the RS485 level conversion, the master control board circuit connects as slave and is operated in accepting state at ordinary times, send with the switching that receives and control by P3.4, receive the order of control panel circuit after, carry out corresponding operating and foldback status information; Read signal code translator U7 exports 8 tunnel gating signals by the RD read signal combination decoding of address wire and U1, can read the input of 8*8 way switch amount signal at most; Write signal code translator U6 exports 4 tunnel gating signals by the WR signal combination decoding of address wire and U1, and maximum can be exported 4*8 way switch amount signal.
4. intelligent controller for multifunctional anti-bedsore care bed as claimed in claim 1, it is characterized in that, described signal input circuit comprises 6 road signals of two angular transducers, each angular transducer is installed in respectively on the body batching spindle motor, the pulse signal of each angular transducer output expression turned position, turn signal and initial point signal totally 3 tunnel, two angular transducers all are connected with latch U10,1024 pulses of angular transducer revolution output, pulse signal pulsewidth＞80ms, the every 5ms of U1 regularly reads pulse signal, carry out plus-minus counting according to turn signal and initial point signal number of pulses, being saved to power down keeps among the RAM U5, thereby determine the batching shaft position, and guaranteed that power down re-powers back U1 and still can judge the batching shaft position; Signal input circuit also comprises seven pairs of travel switches, and they are installed on seven electric pushrods of a body, and every pair of travel switch is formed by a high-order travel switch and a low level travel switch; Each is connected with latch U9 with latch U8 travel switch, and latch U8 and latch U9 are as input buffering, and under the control of U1 to read decoder U7 output gating signal, signal condition is read in timesharing;
The switching value signal of direct current push-rod electric machine run signal and fault-signal harvester generation is simultaneously sent into latch U11 and latch U12, under the gating signal control of read decoder U7, regularly operation and the fault-signal to seven road push-rod electric machines reads judgement to U1 by U11 and U12.
5. intelligent controller for multifunctional anti-bedsore care bed as claimed in claim 1 is characterized in that, described output driving circuit comprises the driving of 9 pairs of relay K 1, K2, on 2 batching spindle motors and 7 direct current push-rod electric machines a pair of relay is installed respectively; All relays are driven by 3 groups of driving circuits, and every group of identical and each self-driven 7 relay of drives structure, the output latch latch signal of every group of driving circuit are respectively from WY0, WY1, the WY2 of write decoder U6;
Wherein the structure of one group of driving circuit comprises an output latch U13, No. 7 photoelectrical couplers, 7 road driver U14 and corresponding resistors, U1 sends relay action signal, under the gating signal WY0 of write decoder U6 output control, be latched into the output terminal of U13, transmit signals to the input end of the driver U14 of 24V power work by photoelectrical coupler, 7 actuatings of relay of control after U14 drives, resistance R P6 is an optocoupler input current-limiting resistance, resistance R P5, RP7 form divider resistance, so that the input high-low level of U14 reaches the level requirement of regulation.
6. intelligent controller for multifunctional anti-bedsore care bed as claimed in claim 1, it is characterized in that, described many circuit for controlling motor have 9 the tunnel, each road includes a pair of relay K 1, K2, the move left and right of elongation, shortening and the bed surface of the rotating of their switching controls direct current push-rod electric machines or batching spindle motor and then control push rod, the normally closed contact interlocking connection of relay K 1, K2 cause power supply short circuit when preventing misoperation;
Operation detecting circuit only detects push-rod electric machine, have 7 the tunnel, each road includes diode D1, the D2 that is connected in the direct current push-rod electric machine loop, current-limiting resistance R4 and optocoupler U30, electric current when motor normally moves can produce pressure drop at D1, D2 two ends, after the R4 current limliting, can make optocoupler U30 input end luminous, produce run signal at output terminal; If not this run signal generation then can be judged to be the electric motor loop open circuit during operation of direct current push-rod electric machine;
Failure detector circuit only detects push-rod electric machine, have 7 the tunnel, each road comprises the resettable fuse R3 that is connected in the electric motor loop, current-limiting resistance R5 and optocoupler U31, electric current is in normal range during the motor operation, and the resistance of R3 is very little, and the pressure drop of generation is also very little, deficiency is so that the input end of optocoupler U31 is luminous, and optocoupler output terminal no signal is exported; When overload or short trouble took place motor, electric current significantly increased, and it is big that the resistance of R3 becomes rapidly, thereby produce bigger pressure drop at two ends, and this voltage makes optocoupler U31 input end luminous after the R5 current limliting, produces fault-signal at output terminal; These signals are monitored in the collection of master control board circuit signal input circuit, suspend the bed body and carry out action after failure judgement takes place, and avoid causing the damage of a body, and failure message are delivered to control panel carry out audible alarm and the demonstration of LCD failure message.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357050A (en) * | 2011-10-21 | 2012-02-22 | 深圳市泰乐康科技有限公司 | Position display device for medical bed |
| CN102436197A (en) * | 2011-10-12 | 2012-05-02 | 南通医疗器械有限公司 | Control universal circuit board for medical equipment |
| CN103830059A (en) * | 2014-03-26 | 2014-06-04 | 吴小玲 | Multifunctional array type stand column bed |
| CN104678797A (en) * | 2014-11-17 | 2015-06-03 | 杭州新时空电动汽车有限公司 | Control device for battery cabin door of alternating current mode-based electric vehicle |
| CN106354040A (en) * | 2016-10-18 | 2017-01-25 | 湖北航天技术研究院总体设计所 | Isolation type electric push rod control method and device with in-place feedback function |
| CN108964052A (en) * | 2018-09-05 | 2018-12-07 | 佛山市三创针织有限公司 | A kind of three power levels of double alternating current inputs |
| CN110037637A (en) * | 2019-03-14 | 2019-07-23 | 佛山市百斯特电器科技有限公司 | A kind of dish-washing machine power down process method |
| CN112003479A (en) * | 2020-09-01 | 2020-11-27 | 中车青岛四方车辆研究所有限公司 | Digital quantity acquisition circuit and acquisition method |
| CN113885392A (en) * | 2021-10-18 | 2022-01-04 | 卡斯柯信号有限公司 | Fuse-free discrete output safety state escape protection system for safety output |
-
2009
- 2009-01-05 CN CN 200910013716 patent/CN101566832B/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436197A (en) * | 2011-10-12 | 2012-05-02 | 南通医疗器械有限公司 | Control universal circuit board for medical equipment |
| CN102357050A (en) * | 2011-10-21 | 2012-02-22 | 深圳市泰乐康科技有限公司 | Position display device for medical bed |
| CN103830059A (en) * | 2014-03-26 | 2014-06-04 | 吴小玲 | Multifunctional array type stand column bed |
| CN104678797A (en) * | 2014-11-17 | 2015-06-03 | 杭州新时空电动汽车有限公司 | Control device for battery cabin door of alternating current mode-based electric vehicle |
| CN104678797B (en) * | 2014-11-17 | 2017-12-05 | 杭州新时空电动汽车有限公司 | It is a kind of based on the batteries of electric automobile hatch door control device for changing power mode |
| CN106354040A (en) * | 2016-10-18 | 2017-01-25 | 湖北航天技术研究院总体设计所 | Isolation type electric push rod control method and device with in-place feedback function |
| CN106354040B (en) * | 2016-10-18 | 2019-10-08 | 湖北航天技术研究院总体设计所 | A kind of isolated form electric pushrod control method and device with feedback function in place |
| CN108964052A (en) * | 2018-09-05 | 2018-12-07 | 佛山市三创针织有限公司 | A kind of three power levels of double alternating current inputs |
| CN110037637A (en) * | 2019-03-14 | 2019-07-23 | 佛山市百斯特电器科技有限公司 | A kind of dish-washing machine power down process method |
| CN112003479A (en) * | 2020-09-01 | 2020-11-27 | 中车青岛四方车辆研究所有限公司 | Digital quantity acquisition circuit and acquisition method |
| CN113885392A (en) * | 2021-10-18 | 2022-01-04 | 卡斯柯信号有限公司 | Fuse-free discrete output safety state escape protection system for safety output |
| CN113885392B (en) * | 2021-10-18 | 2024-04-26 | 卡斯柯信号有限公司 | Fuse-free discrete output safety state escape protection system for safety output |
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