CN200945289Y

CN200945289Y - Double-CPU liquid droplet monitoring device

Info

Publication number: CN200945289Y
Application number: CN 200620027221
Authority: CN
Inventors: 杨尊峰; 曹金玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-09-04
Filing date: 2006-09-04
Publication date: 2007-09-12
Anticipated expiration: 2016-09-04

Abstract

The utility model relates to a double-CPU liquid droplet monitoring device, comprising a housing and a measurement control circuit arranged in the housing, wherein the measurement control circuit comprises two singlechips, and the two singlechips are bidirectionally connected by a data line. In order to improve safety, the utility model adopts two CPU main chips, has reliable failure alarming function, and has automatic detection and automatic control function. The utility model can complete transfusion speed collection and speed regulation, and at the same time, also continuously carry on self state detection. By strict safety arithmetic to determine the state of the device, only under the normal state of the device, the apparatus will enter into the working procedure, otherwise, the apparatus will immediately stop working, and send out a plurality of alarm signals, finally realizes the operable safety requirements of that: the apparatus may have failures, but by no means has medical failures and is an transfusion measurement control device with sky-high safety factor.

Description

Two CPU dropping liquid measure and control devices

Technical field

This utility model belongs to medical instruments field, relates to a kind of pair of CPU dropping liquid measure and control device, is particularly suited for monitoring and controlling the process of whole transfusion.

Background technology

Transfusion work is a time-consuming job of taking a lot of work, and in electronic technology and microcomputer technology highly developed today, realize the process of infusing, speed detects automatically, further the realization transfusion speed is controlled automatically, is not very difficult thing, and people also develop various products.Investigation according to us shows, the transfusion auto-measuring, and band especially with better function is controlled the infusion set of function automatically, and the popularization rate is very low.Because as electronic product, all there is life problems, all may break down.But from medical angle, the fault that has does not allow to take place, such as out of control, hypervelocity.Therefore, more need to develop transfusion measure and control device with high safety coefficient.

Summary of the invention

Problem to be solved in the utility model is, overcome the deficiencies in the prior art, a kind of pair of CPU dropping liquid measure and control device is provided, high at transfusion class medical treatment measure and control device to security requirement, must be perfectly safe, and electronic component, device and the CPU master chip of reality all have service life, must break down, this reality and sharp-pointed contradiction propose the design of two CPU: that is to say, in a transfusion measurement and control instrument, adopt two CPU master chips.They not only finish automatic detection and control work automatically, strict safety Design is more arranged, then by tight security algorithm, determine the state of device, only under the normal condition of unit state, instrument just can enter working procedure, otherwise, to quit work at once, and send multiple alarm signal.Final realization instrument may break down, but the practicable security requirement of medical fault will never occur.Increase CPU so again and more positive meaning arranged improving safety? the answer is in the negative for we.Because electronic technology is very ripe now, the life-span of CPU is all more than 3 years.In normal the use, the probability that two CPU damage simultaneously is lower, and what we pursued is when improper fault occurring, has at least 1 CPU in time to report to the police, and termination work does not have medical fault, just can achieve the goal.

This utility model solves its technical problem and takes following technical scheme to realize:

According to a kind of pair of CPU dropping liquid measure and control device that this utility model provides, comprise the telemetry circuit of installing in housing and the housing, telemetry circuit comprises two single-chip microcomputers, two single-chip microcomputers are by the two-way connection of data wire.

It is to take following technical scheme further to realize that this utility model solves its technical problem:

Aforesaid two single-chip microcomputers, wherein first single-chip microcomputer connects photosignal shaping circuit, control module, liquid crystal display, first warning circuit, first power sense circuit and radio alarming circuit respectively; Second singlechip connects photosignal shaping circuit, control module, second warning circuit, second source testing circuit and keyboard respectively, and two-way connection wireless communication line.

This utility model compared with prior art has significant advantage and beneficial effect, and this device is not only powerful, easy to operate, and security measures is proper, can not guarantee the purpose of medical fault.Owing to adopting two cpu chip structures, not only can realize detecting automatically and automatic control function, perfect syndrome check and warning function are more arranged.Two CPU can finish transfusion speed collection and speed adjusting, and also constantly carry out ego state simultaneously and detect: 1. supply voltage detects.2. periodic the communicating with one another between two CPU.3. periodic wireless contact communication with PC.4. the comparison of Shu Ye speed and setting speed.5. remain the detection and the judgement of liquid measure.6. in the control procedure controlled quentity controlled variable of motor with the change quantitative analysis and the judgement of liquid droping speed.If find above-mentioned loss of form, and through confirming as significant trouble, two CPU will utilize the means of reporting to the police separately: first warning, second warning, radio alarming, wireless telecommunications etc. produce alarm signal.So just avoid occurring the generation that out of control, hypervelocity etc. causes medical fault.

The specific embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.

Description of drawings

Fig. 1 is an overall structure sketch map of the present utility model;

Fig. 2 is a telemetry circuit theory diagram of the present utility model;

Fig. 3 is circuit theory diagrams of the present utility model;

Among the figure: 1. speed regulating structure is carried out in 16. transmissions of housing 2. liquid crystal displays 3. dropping liquid display lamps 4. keyboards 5. charger sockets 6. sensor sockets 7. on and off switch 8. control valves 9. photosignal shaping circuits 10. wireless communication lines 11. first warning circuits 12. radio alarming circuit 13. second warning circuits 14. drive circuits 15. motors

The specific embodiment:

Below in conjunction with accompanying drawing and preferred embodiment, the specific embodiment, structure, feature and effect thereof that foundation this utility model is provided, describe in detail as after.

See also Fig. 1～3, a kind of pair of CPU dropping liquid measure and control device, comprise the telemetry circuit of installing in housing 1 and the housing, telemetry circuit comprises two single-chip microcomputer ICPU, IICPU, two single-chip microcomputer ICPU, IICPU are by the two-way connection of data wire, photosignal shaping circuit 9 is connected with two single-chip microcomputers respectively, and the first single-chip microcomputer ICPU is link control module, liquid crystal display 2, first warning circuit 11, the first power sense circuit R5, R6 and radio alarming circuit 12 respectively; Second singlechip IICPU is link control module, second warning circuit 13, second source testing circuit R7, R8 and keyboard 4 respectively, and connects wireless communication line 10.Control module is made up of drive circuit 14, motor 15 and transmission execution speed regulating structure 16, and wherein drive circuit is connected with motor, and motor connects transmission and carries out speed regulating structure.Single-chip microcomputer can adopt the MSP430 of little power consumption, be shaped on one on the case panel and can insert the sensor socket 5 of pick off to photosignal shaping circuit 9, also be shaped on one on the case panel and can insert the charger socket 6 of charger to power supply, be shaped on a control valve 8 and dropping liquid display lamp 3 on the case panel, supply voltage 3.6V can be by rechargeable battery powered.

In the time of between drop is by transmitting tube D1 and receiving tube D2, after photosignal amplifies through audion T1, T2, colelctor electrode at T2 produces a negative pulse, through a numeration of photoelectricity shaping circuit 9 back outputs pulse, give ICPU and IICPU simultaneously, under the timing routine of two CPU cooperated, IICPU calculated liquid droping speed V2 at that time, gives ICPU.ICPU compares the V1 that V2 is calculated with itself, just can determine the correctness of velocity process module.In addition, the operational factor of device such as total amount of infusion m0, setting speed V0, permissible velocity deviation VE can pass through keyboard 4 or wireless telecommunications 10, is input to IICPU, and then sends ICPU to by IICPU.ICPU can be correct at that time V1 with V0 relatively, and deviation is during less than VE, then normally operation.If deviation during greater than VE, then can calculate the needed controlled quentity controlled variable C1 of control corresponding module, ICPU issues II CPU to this controlled quentity controlled variable, after checking through II CPU, judges correctly, then sends controlled quentity controlled variable C2 to control module.At this moment, control module then feeds back to ICPU to controlled quentity controlled variable, and ICPU and receive correct feedback information then begins to gather the dropping liquid signal after the time-delay, assert regulating effect at last.If deviation then stops the speed governing program less than permissible variation VE at this moment, otherwise, above-mentioned speed governing work continued.In the adjustment process, the change amount of controlled quentity controlled variable and speed must satisfy certain algorithm that concerns, otherwise, will be as the malfunctioning warning of control.Simultaneously device can be periodically the result parameter of operation: liquid droping speed, parameters such as dropping liquid amount, residue liquid measure, remaining time, unit state.Issue II CPU by I CPU, examine nurse's night shift room is issued in the back by radio receiving transmitting module control microcomputer by II CPU again, the control microcomputer then can calculate the correctness of the data of sending out of judging each extension set, normally move when correct, can follow examining of corresponding extension set process secondary by wireless communication networks when makeing mistakes, still be error result, then main frame alarm after secondary is examined, allow the artificial handling failure of nursing staff on duty, stop dropping liquid or exchange device more.

First power sense circuit is made up of resistance R 5, R6, and R5, R6 voltage division signal offer I CPU, do the sampled signal of supply voltage.

The second source testing circuit is made up of resistance R 7, R8, and R7, R8 voltage division signal offer II CPU, do the sampled signal of supply voltage.

Adjusting liquid droping speed of the present utility model is that drive circuit 14, motor 15 and transmission execution speed regulating structure 16 realize that its can improve the function of device on the one hand, finishes automatic speed regulation, alleviates medical personnel's workload through control module; On the other hand, if out of control, hypervelocity can cause medical fault.The design of two CPU also produces at this point just, and whole control process is a closed loop, and control software is proceed step by step, approaches step by step, avoids overshoot, hypervelocity as far as possible.In case improper phenomenon occurs: during faults such as speed is ultrafast, super slow, the rapid change amount of speed and controlled quentity controlled variable ratio are not normal, after control is examined through secondary, still can't enter normal condition.Two CPU then utilize warning hands section separately; Sound equipment and radio alarming send alarm signal, allow medical personnel handle, and avoid occurring medical fault.

The utlity model has following function:

1, realizes detecting automatically and automatic control function.

2, the major parameter that shows dropping liquid automatically.

1. A: speed (ml/ minute), (drip/minute)

2. B: surplus (ml)

3. C: when surplus (time: divide)

3, can inquire about other parameter

1. the total amount of infusing (ml) is by " function ", " 2 ".

2. dropping liquid amount (ml) is by " dripping ".

The 3. defeated time (time: divide) by " function ", " time ".

4, realize the automatic fault warning

1. stifled pin is reported to the police: fault 0-speed (drip/minute), and send successive monophone report to the police " tick-tick-tick-... ".

2. speed prompting: fault 1-is slow partially; Fault 2-is fast.Fast or slow partially numerical value during-20%--40%, through overregulating, fails to reach the setting requirement at+20%-+40% when liquid droping speed, just can send three times " tick-tick-ticking-" of monophone sound equipment prompting.Generally can not take place.

3. overspeed alarming: fault 3-is super slow; Fault 4-is ultrafast.Fast or slow partially when liquid droping speed, surpass setting speed+40 and at-40% o'clock, and through overregulating when invalid, just can send successive three acoustic alarm signals: " ticking tick-ticks ticks-... ", after this press any key, just can stop to report to the police, enter debugging mode.This fault generally can not take place.

4. low pressure alarming: show " under-voltage ", and send successive monophone report to the police " tick-tick-tick-... ".

5. control malfunctioning: show fault 6, and send successive monophone report to the police " tick-tick-tick-... ".

5, the progress of work is predicted automatically

1. stop the liquid prompting: when the medicinal liquid residue that can fail equals 8ml, send three times " tick-tick-ticking-" of monophone sound equipment prompting, at this moment show " surplus 8ml ".

2. stopping liquid reports to the police: when residue medicinal liquid during less than 3ml, device can send three times three sound equipment " ticking tick-ticks tick-tick tick-" automatically, at this moment shows " surplus 3ml ".

3. stopping liquid shuts down automatically: when the residue medicinal liquid equaled 1ml, device is shutdown automatically, showed that at this moment " surplus 1ml " " finishes ".

6, clock function: by " function ", " 6 ", can work as clock and use, show: the time: divide: second.

7, keyboard parameter is provided with function: by keyboard operation, can check and import various parameters.(transfusion total amount (ml), speed (drip/minute), permissible variation (drip/minute), residual liquid (ml), time (time: divide: second) etc.

8, the real-time observing and controlling function of Wireless Networking:, can realize the radio fest and control function of networking in real time by wireless communication networks.Above-mentioned all operational factors, state and process all can be transmitted and be presented on the main frame of nurse's night shift room.The nurse can control the transfusion process of each sick bed in night shift room.

This utility model can work alone by unit, by instrument keyboard input operational factor, finishes auto-measuring and auto-control work then.If online network-type system, operational factor can be imported by the PC keyboard from the main frame of nurse's night shift room, sends on the equipment of corresponding measurement and control instrument through wireless communication networks then.

Claims

1. a two CPU dropping liquid measure and control device comprises the telemetry circuit of installing in housing and the housing, and it is characterized in that: telemetry circuit comprises two single-chip microcomputers, and two single-chip microcomputers are by the two-way connection of data wire.

2. a kind of pair of CPU dropping liquid measure and control device according to claim 1, it is characterized in that: described two single-chip microcomputers, wherein first single-chip microcomputer connects photosignal shaping circuit, control module, liquid crystal display, first warning circuit, first power sense circuit and radio alarming circuit respectively; Second singlechip connects photosignal shaping circuit, control module, second warning circuit, second source testing circuit and keyboard respectively, and two-way connection wireless communication line.