Liquid leakage monitoring module and control monitoring system

Abstract

The invention provides a liquid leakage monitoring module and a control monitoring system, the liquid leakage monitoring module comprises a liquid leakage monitoring sensor, a micro liquid leakage detection alarm module and a power supply access module, the output end of the liquid leakage monitoring sensor is connected with the input end of the micro liquid leakage detection alarm module, and the output end of the micro liquid leakage detection alarm module is connected with the power supply access module; the output end of the micro-leakage detection alarm module is connected to the control system, and the control system is further connected to an operation control interface of the medical temperature controller; the input end of the power supply access module is connected to a given power supply, and the output end of the power supply access module is connected to the micro liquid leakage detection alarm module and the liquid leakage monitoring sensor so as to supply power to the micro liquid leakage detection alarm module and the liquid leakage monitoring sensor. According to the application, the micro liquid leakage signal identification is realized through the micro liquid leakage detection alarm module, the liquid leakage detection precision is improved, and the operation safety of the medical temperature controller is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical electronic equipment, and particularly relates to a liquid leakage monitoring module and a control monitoring system. BACKGROUND

[0002] The medical temperature control instrument is widely used in medical scenes such as operation heat preservation and postoperative temperature adjustment, and it realizes precise temperature control through circulating cooling liquid and other media. If the device leaks cooling liquid, it may damage the internal circuit of the instrument, cause a short circuit fault, and even affect the medical environment and threaten the safety of patients due to liquid leakage.

[0003] To overcome the above technical problems, the liquid leakage monitoring scheme provided in the prior art is insufficient in identifying weak liquid leakage signals, and cannot meet the high-precision and high-reliability monitoring requirements in medical scenarios, resulting in the inability to accurately monitor the internal liquid leakage of the medical temperature control instrument, which may delay the monitoring of the liquid leakage and delay the processing opportunity. SUMMARY

[0004] Therefore, the present application aims to at least provide a liquid leakage monitoring module and a control monitoring system, which can realize the identification of small liquid leakage signals through a micro-liquid leakage detection alarm module, improve the liquid leakage detection accuracy, and ensure the safe operation of the medical temperature control instrument.

[0005] The present application mainly includes the following aspects: In a possible implementation, the liquid leakage monitoring sensor is fixed on the base of the medical temperature control instrument.

[0006] In a possible implementation, the micro-liquid leakage detection alarm module includes a comparison circuit and a vibration and alarm driving circuit, wherein the input end of the comparison circuit is connected to the output end of the liquid leakage monitoring sensor, the output end of the comparison circuit is connected to the input end of the vibration and alarm driving circuit, and the output end of the vibration and alarm driving circuit is connected to the control system.

[0007] In a possible implementation, the micro-liquid leakage detection alarm module includes a comparison circuit and a vibration and alarm driving circuit, wherein the input end of the comparison circuit is connected to the output end of the liquid leakage monitoring sensor, the output end of the comparison circuit is connected to the input end of the vibration and alarm driving circuit, and the output end of the vibration and alarm driving circuit is connected to the control system.

[0008] In a possible implementation, the comparison circuit comprises a liquid leakage signal input interface, a voltage division component, a signal pull-up component, a filter component and a comparison chip, wherein the first connection end of the liquid leakage signal input interface is connected to the output end of the liquid leakage monitoring sensor and the non-inverting input pin of the comparison chip respectively, the second connection end of the liquid leakage signal input interface is grounded, the first connection end of the voltage division component is grounded through the filter component, the second connection end of the voltage division component is connected to the non-inverting input pin of the comparison chip and the first connection end of the liquid leakage signal input interface respectively, the third connection end of the voltage division component is connected to a given voltage, the fourth connection end of the voltage division component is grounded, the fifth connection end of the voltage division component is connected to a given reference power supply, the sixth connection end of the voltage division component is connected to the inverting input pin of the comparison chip, the output pin of the comparison chip is connected to the input end of the oscillation and alarm driving circuit and the given voltage through the signal pull-up component respectively, the negative electrode of the power supply of the comparison chip is grounded, and the positive electrode of the power supply of the comparison chip is connected to the given voltage.

[0009] In a possible implementation, the oscillation and alarm driving circuit comprises an oscillation alarm signal generation component, an optocoupler switch, an alarm component and an alarm driving component, wherein the input end of the oscillation alarm signal generation component is connected to the output end of the comparison circuit, the output end of the oscillation alarm signal generation component is connected to the input side of the optocoupler switch, the output side of the optocoupler switch is connected to the control input end of the alarm driving component, and the output end of the alarm driving component is connected to the alarm component and the control system respectively.

[0010] In a possible implementation, the oscillation alarm signal generation component comprises a conduction resistance, a control switch, a first oscillation resistance, a second oscillation resistance and an oscillation capacitor, wherein one end of the conduction resistance is connected to the output end of the comparison circuit, the other end of the conduction resistance is connected to the control end of the control switch, the first connection end of the control switch is connected to a given voltage, the second connection end of the control switch is connected to one end of the oscillation capacitor and the input side anode pin of the optocoupler switch through the first oscillation resistance respectively, the input side cathode pin of the optocoupler switch is grounded, the other end of the oscillation capacitor is connected to the output side emitter pin of the optocoupler switch and the ground through the second oscillation resistance respectively, and the output side collector of the optocoupler switch is connected to the control end of the alarm driving component; the first connection end of the alarm driving component is connected to a given voltage, and the second connection end of the alarm driving component is connected to the alarm component and the control system respectively.

[0011] In a possible implementation, the alarm component comprises an indicator light alarm unit and a buzzer, wherein the input end of the indicator light alarm unit and the input end of the buzzer are both connected to the output end of the alarm driving component, and the output end of the indicator light alarm unit and the output end of the buzzer are both grounded.

[0012] In a possible implementation, the power access module includes a power access interface, an access switch, and an anti-interference component, wherein a first connection end of the power access interface is connected to a power input pin of the access switch, a second connection end of the power access interface is grounded, a power output pin of the access switch is led out to a given voltage and grounded through the anti-interference component.

[0013] In a second aspect, the embodiments of the present application provide a control monitoring system applied to a medical temperature control instrument, the control monitoring system including a plurality of operation safety monitoring modules and a control system integrated in the medical temperature control instrument, the plurality of operation safety monitoring modules being connected to the control system respectively, the plurality of operation safety monitoring modules including the liquid leakage monitoring module, the liquid level detection module, the pressure detection module, the water temperature detection module, the body temperature detection module, the sheath detection module, and the water pump speed control and speed feedback module in any possible implementation of the first aspect; the liquid leakage monitoring module monitors a liquid leakage signal and transmits the liquid leakage signal to the control system; the liquid level detection module monitors a water tank liquid level and transmits the water tank liquid level to the control system; the pressure detection module monitors a waterway pressure value and transmits the waterway pressure value to the control system; the water temperature detection module monitors a liquid temperature sent into a sheath of the medical temperature control instrument and transmits the liquid temperature to the control system; the body temperature detection module monitors a body temperature of a treated person and feeds back the body temperature to the control system; the sheath detection module is used for detecting whether the sheath falls off in a treatment process and transmitting a detection result to the control system; and the water pump speed control and speed feedback module delivers the liquid processed by the temperature control module to the sheath waterway according to a speed indicated by a speed control instruction issued by the control system, and reads a water pump speed in real time and feeds back the water pump speed to the control system; if the control system detects at least one of the following: liquid leakage, the water tank liquid level being lower than a safe liquid level, the waterway pressure value not being in a safe pressure range, the liquid temperature not being in a safe temperature range, the body temperature of the treated person not being in a safe body temperature range, the sheath falling off in the treatment process, and the water pump speed being inconsistent with an instruction speed, the control system determines that the medical temperature control instrument is in an abnormal operation state, and controls the medical temperature control instrument to stop operation.

[0014] In a possible implementation, the control monitoring system further includes an electromagnetic valve control module, a temperature control module, and a screen communication module, the electromagnetic valve control module controls a liquid flow direction in a waterway of the medical temperature control instrument in response to an on-off control instruction issued by the control system, the temperature control module controls a liquid temperature flowing into the sheath waterway in response to a temperature control instruction issued by the control system, and the screen communication module provides a visual interactive window, generates working state setting information of the medical temperature control instrument in response to an operation on the visual interactive window, and transmits the working state setting information to the control system, and the control system adjusts a working state of the medical temperature control instrument based on the working state setting information.

[0015] The liquid leakage monitoring module and the control monitoring system provided by the embodiment of the present application comprise a liquid leakage monitoring sensor, a micro liquid leakage detection alarm module and a power access module, wherein the output end of the liquid leakage monitoring sensor is connected to the input end of the micro liquid leakage detection alarm module, the output end of the micro liquid leakage detection alarm module is connected to the control system, and the control system is further connected to the operation control interface of the medical temperature controller; the input end of the power access module accesses a given power supply provided by a power supply system, the given power supply provides a given voltage, and the output end of the power access module accesses the micro liquid leakage detection alarm module, the liquid leakage monitoring sensor and the control system to supply power to the micro liquid leakage detection alarm module, the liquid leakage monitoring sensor and the control system. The micro liquid leakage detection alarm module is used to realize micro liquid leakage signal identification, improve the liquid leakage detection precision and ensure the operation safety of the medical temperature controller.

[0016] In order to make the above objectives, characteristics and advantages of the present application more apparent, clear and easy to understand, the following preferred embodiments are specifically described below, and the accompanying drawings are referred to for detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be considered as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 Fig. 1 shows a structure schematic diagram of a liquid leakage monitoring module provided by the embodiment of the present application; Figure 2 Fig. 2 shows a structure schematic diagram of a power access module provided by the embodiment of the present application; Figure 3 Fig. 3 shows a structure schematic diagram of a liquid leakage monitoring module provided by the embodiment of the present application; Figure 4 Fig. 4 shows a structure schematic diagram of a control monitoring system provided by the embodiment of the present application. DETAILED DESCRIPTION

[0019] To make the purposes, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. It should be understood that the drawings in the present application only serve the purpose of description and illustration, and are not used to limit the scope of protection of the present application. In addition, it should be understood that the schematic drawings are not drawn to scale. The flowcharts used in the present application show the operations implemented according to some embodiments of the present application. It should be understood that the operations of the flowcharts can not be implemented in sequence, and the steps without logical context relationship can be reversed in sequence or implemented simultaneously. In addition, one or more other operations can be added to the flowcharts or one or more operations can be removed from the flowcharts under the guidance of the content of the present application.

[0020] In addition, the described embodiments are only some of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0021] At present, the general liquid leakage monitoring scheme has problems such as poor adaptability, delayed response, high false alarm rate, etc. Specifically, the traditional liquid leakage detection circuit has poor performance in weak liquid leakage signal identification, anti-medical equipment electromagnetic interference, etc., and cannot meet the high-precision and high-reliability monitoring requirements of medical scenes, resulting in the inability to achieve precise monitoring of the internal liquid leakage of the medical temperature controller. The result may cause delay in monitoring the liquid leakage and delay in handling. Based on this, the embodiments of the present application provide a liquid leakage monitoring module and a control monitoring system, which realize micro liquid leakage signal identification through a micro liquid leakage detection alarm module, improve liquid leakage detection precision, and ensure the safe operation of the medical temperature controller. Specifically as follows: Please refer to Figure 1 , Figure 1 Fig. 1 shows a structure schematic diagram of a liquid leakage monitoring module provided by an embodiment of the present application. As shown in Figure 1 , the liquid leakage monitoring module is applied to a medical temperature controller. The liquid leakage monitoring module includes a liquid leakage monitoring sensor 10, a micro liquid leakage detection alarm module 11, and a power access module 12. The output end of the liquid leakage monitoring sensor 10 is connected to the input end of the micro liquid leakage detection alarm module 11. The output end of the micro liquid leakage detection alarm module 11 is connected to a control system 20. The control system 20 is also connected to an operation control interface of the medical temperature controller. The control system 20 controls the operation of the medical temperature controller through the operation control interface of the medical temperature controller.

[0022] The input end of the power access module 12 accesses a given power supply provided by a power supply system, the given power supply provides a given voltage VCC, the given voltage VCC is a working voltage corresponding to the liquid leakage monitoring module, and the output end of the power access module 12 accesses the micro-liquid leakage detection alarm module 11, the liquid leakage monitoring sensor 10 and the control system 20 to supply power to the micro-liquid leakage detection alarm module 11, the liquid leakage monitoring sensor 10 and the control system 20.

[0023] In a preferred embodiment, the power access module 12 includes a power access interface, an access switch and an anti-interference component, the first connection end of the power access interface is connected to the power input pin of the access switch, the second connection end of the power access interface is grounded, the power output pin of the access switch leads out the given voltage and is grounded through the anti-interference component, specifically, the power access interface realizes the access of the given power supply, the access switch is used for on-off of the given power supply, and the anti-interference component is used for filtering high-frequency interference of the given voltage.

[0024] Specifically, please refer to Figure 2 , Figure 2 A structure diagram of a power access module provided by an embodiment of the application is shown. As Figure 2 shown, the anti-interference component selects a first capacitor C1, and the access switch SW1 selects a switch with a model number of SK-12D02-VG7, wherein the first connection end of the power access interface P1 is connected to the first pin of the access switch SW1, the second connection end of the power access interface P1 is grounded GND, the second pin of the access switch SW1 leads out the given voltage VCC and is grounded GND through the first capacitor C1, the third pin of the access switch SW1 is suspended, and the fourth pin and the fifth pin of the access switch SW1 are grounded GND.

[0025] In a preferred embodiment, please refer to Figure 3 , Figure 3 A structure diagram of a liquid leakage monitoring module provided by an embodiment of the application is shown. The micro-liquid leakage detection alarm module 11 includes a comparison circuit 110 and a shock and alarm driving circuit 111, wherein the input end of the comparison circuit 110 is connected to the output end of the liquid leakage monitoring sensor 10 (i.e. the detection electrode of the liquid leakage monitoring sensor 10), the output end of the comparison circuit 110 is connected to the input end of the shock and alarm driving circuit 111, and the output end of the shock and alarm driving circuit 111 is connected to the control system.

[0026] In a preferred embodiment, the comparison circuit 110 includes a liquid leakage signal input interface, a voltage division component, a signal pull-up component, a filter component and a comparison chip U1, as Figure 3As shown, the voltage divider assembly 1101 includes a first voltage divider resistor R1 (10K), a second voltage divider resistor R2 (10K), a third voltage divider resistor R3 (10K), and a fourth voltage divider resistor R4 (10K). The signal pull-up assembly uses a pull-up resistor R. s1 (10K), the filter component uses the second capacitor C2 (100nF), and the comparator chip U1 uses the LM393DT comparator chip.

[0027] In one specific embodiment, such as Figure 3 As shown, under the above device selection, the first connection terminal of the leakage signal input interface P2 is connected to the detection electrode P3 of the leakage monitoring sensor 10 and the non-inverting input pin +IN1 of the comparator chip U1, respectively. The second connection terminal of the leakage signal input interface P2 is grounded to GND. One end of the first voltage divider resistor R1 serves as the first connection terminal of the voltage divider component 1101 and is grounded to GND through the second capacitor C2. The other end of the first voltage divider resistor R1 serves as the second connection terminal of the voltage divider component 1101 and is connected to the non-inverting input pin +IN1 of the comparator chip U1, the first connection terminal of the leakage signal input interface P2, and one end of the second voltage divider resistor R2, respectively. The other end of resistor R2 serves as the third connection terminal of voltage divider component 1101, connected to the given voltage VCC. One end of the third voltage divider resistor R3 serves as the fourth connection terminal of voltage divider component 1101, grounded. The other end of the third voltage divider resistor R3 serves as the sixth connection terminal of voltage divider component 1101, connected to one end of the fourth voltage divider resistor R4 and the inverting input pin -IN1 of the comparator chip. The other end of the fourth voltage divider resistor R4 serves as the fifth connection terminal of voltage divider component 1101, connected to the given reference power supply VDD (3.3V). The output pin OUT1 of comparator chip U1 is connected to the input terminal of oscillation and alarm drive circuit 111 and the pull-up resistor R1. s1 With the given voltage VCC applied, the negative power supply terminal V- of the comparator chip U1 is grounded to GND, and the positive power supply terminal V+ of the comparator chip U1 is connected to the given voltage VCC. The non-inverting input pin +IN2, the inverting input pin -IN2, and the output pin OUT2 of the comparator chip U1 are left floating.

[0028] Specifically, the leakage detection sensor utilizes the conductivity of liquids. When leakage occurs, the corresponding detection electrode is turned on, converting the physical leakage event into an electrical signal that is transmitted to the comparison circuit. In this application, the size of the leakage detection sensor is the same as that of the medical temperature controller base and is installed and fixed on the medical temperature controller base, which facilitates fixation and provides a more comprehensive leakage detection range.

[0029] In a specific embodiment, the first voltage dividing resistor R1 (10K) and the second voltage dividing resistor R2 (10K) form a first voltage dividing assembly to collect the voltage monitored by the liquid leakage monitoring sensor, the third voltage dividing resistor R3 (10K) and the fourth voltage dividing resistor R4 (10K) form a second voltage dividing assembly connected to a given reference power supply VDD to provide a reference voltage, specifically, the first voltage dividing assembly takes power from a given voltage VCC, and a liquid leakage detection voltage is generated between the first voltage dividing resistor R1 and the second voltage dividing resistor R2 and input to the non-inverting input pin +IN1 of the comparison chip U1, and the second voltage dividing assembly takes power from the given reference power supply and forms a fixed reference voltage between the third voltage dividing resistor R3 and the fourth voltage dividing resistor R4 (because R3=R4, so in the ideal case, the reference voltage is VDD / 2, and the actual reference voltage is affected by the resistance accuracy), and the reference voltage is input to the inverting input pin -IN1 of the comparison chip U1.

[0030] The second capacitor C2 is a filter capacitor, and the two ends of the liquid leakage signal input interface P2 are respectively connected to the two ends of the detection electrode of the liquid leakage monitoring sensor 10, which cooperates with the first voltage dividing assembly to convert the physical liquid leakage signal into a liquid leakage detection voltage and input to the non-inverting input pin +IN1 of the comparison chip U1, and the second capacitor C2 filters out high-frequency interference in the liquid leakage detection voltage.

[0031] In this application, because the LM393DT is a collector open circuit output, an external pull-up resistor R s1 is needed to make the LM393DT stable output high and low levels to drive the rear stage oscillation and alarm driving circuit 111.

[0032] In this application, the inverting input pin -IN1 of the comparison chip U1 is connected to the reference voltage, and the non-inverting input pin +IN1 of the comparison chip U1 is connected to the liquid leakage detection voltage, and the working logic of the comparison chip U1 is as follows: 1) When the liquid leakage detection voltage V+in is greater than the reference voltage V-in, the output pin OUT1 of the comparison chip U1 outputs a high level (close to VCC).

[0033] Specifically, when no liquid leakage occurs, VCC=5V, and the liquid leakage signal input interface P2 is open, at this time: V+in=VCC×(R1 / (R1+R2))=5V×0.5=2.5V, V-in=VDD×(R3 / (R3+R4))=3.3V×0.5=1.65V, V+in>V-in, the output pin OUT1 of the comparison chip U1 outputs a high level.

[0034] 2) When the liquid leakage detection voltage V+in is less than the reference voltage V-in, the output pin OUT1 of the comparison chip U1 outputs a low level (close to GND).

[0035] In the event of a leak, VCC=5V, and the leak signal input interface P2 is short-circuited. At this time: V+in=GND=0V, V-in = 3.3V × 0.5 = 1.65V When V+in < V-in, the output pin OUT1 of the comparator chip U1 outputs a low level.

[0036] This application introduces a micro-leakage detection and alarm module, such as... Figure 3 The comparison circuit 110 shown uses precise voltage division to set the reference voltage, adapting to the leakage signal characteristics of medical temperature controllers (such as the weak signal in the early stage of coolant leakage), and realizes the identification of small leakage signals. The comparison chip U1 in the comparison circuit 110 adopts an anti-electromagnetic interference design, which can adapt to the complex electromagnetic environment of the hospital (such as the high-frequency signal of surgical equipment) and reduce the false alarm rate of leakage detection.

[0037] In a preferred embodiment, such as Figure 3 As shown, the oscillation and alarm drive circuit 111 includes an oscillation alarm signal generation component 1110, an optocoupler switch U2 (selected model PC817), an alarm component 1111, and an alarm drive component T1 (selected signal is a PNP transistor). The input terminal of the oscillation alarm signal generation component 1110 is connected to the output terminal OUT1 of the comparator chip U1, the output terminal of the oscillation alarm signal generation component 1110 is connected to the input side of the optocoupler switch U2, the output side of the optocoupler switch U2 is connected to the control input terminal of the alarm drive component T1, and the output terminal of the alarm drive component T1 is connected to the alarm component 1111 and the control system 20 respectively.

[0038] In one specific embodiment, such as Figure 3 As shown, the oscillation alarm signal generation component 1110 includes an on-resistor R. G1 (Selected model is 1K), control switch T2 (selected model is PNP transistor), first oscillation resistor R F1 (Selected model is 4.7K), second oscillation resistor R F2 (Select model 1K) and oscillation capacitor C F (Selected model is 100μF), where the on-resistance R G1 It is the base bias resistor that controls the switch T2, and together with the signal received from the comparator circuit, controls the conduction state of T2.

[0039] Preferably, the on-resistance R G1 One end is connected to the output terminal OUT1 of the comparator chip U1, and the on-resistance R G1The other end is connected to the control terminal (base) of control switch T2. The first connection terminal (emitter) of control switch T2 is connected to the given voltage VCC. The second connection terminal (collector) of control switch T2 is connected to the first oscillation resistor R. F1 Connected to the oscillation capacitor C respectively F One end of the optocoupler is connected to the anode pin on the input side of the optocoupler U2, and the cathode pin on the input side of the optocoupler U2 is grounded to GND. The oscillation capacitor C F The other end is connected to the output emitter pin of optocoupler switch U2 and through the second oscillation resistor R. F2 Grounded to GND, the output collector of optocoupler switch U2 is connected to the control terminal (base) of alarm drive component T1, the first connection terminal (emitter) of alarm drive component T1 is connected to the given voltage VCC, and the second connection terminal (collector) of alarm drive component T1 is connected to alarm component 1111 and control system 20 respectively.

[0040] In a preferred embodiment, such as Figure 3 As shown, the alarm component 1111 includes an indicator light alarm unit and a buzzer BZ. The indicator light alarm unit includes an indicator LED and a current-limiting resistor R. G2 (Selected model 100Ω), wherein the anode of the indicator LED is connected to the output terminal (collector) of the alarm drive assembly T1 as the input terminal of the indicator alarm unit, the input terminal of the buzzer BZ is connected to the output terminal (collector) of the alarm drive assembly T1, and the cathode of the indicator LED is connected to the current limiting resistor R. G2 One end, current-limiting resistor R G2 The other end is grounded to GND as the output terminal of the indicator alarm unit, and the output terminal of the buzzer BZ is grounded to GND.

[0041] In one specific embodiment, the given voltage VCC is controlled by switch T2 and the first oscillation resistor R. F1 Give the oscillation capacitor C F Charging, oscillating capacitor C F When the voltage rises to a certain level, the LED inside the optocoupler switch U2 turns on and emits light, triggering the phototransistor inside the optocoupler switch U2. At this time, the optocoupler is turned on, the alarm drive component T1 is turned on, and the oscillation capacitor C... F Then through the second oscillation resistor R F2 After discharge and voltage drop, optocoupler switch U2 turns off, and alarm drive component T1 is cut off. This cycle repeats, forming an oscillation and generating a periodic electrical signal. In this application, the first oscillation resistor R... F1 Second oscillation resistor R F2 The oscillation capacitor C is determined by the combination of factors. F The charging and discharging time affects the overall oscillation frequency.

[0042] R G2The current-limiting resistor of the indicator LED protects the indicator LED, and the alarm driving component T1 serves as a switch tube for amplifying current to drive the buzzer BZ.

[0043] Specifically, the light-emitting diode inside the optocoupler switch U2 is controlled by the oscillation signal output by the oscillation alarm signal generating component 1110, and under the action of the received oscillation signal, the light-emitting diode is turned on / off to generate a light signal. The phototriode inside the optocoupler switch U2 senses the light signal generated by the light-emitting diode inside the optocoupler switch U2, and is turned on / off correspondingly. As can be seen, the optocoupler switch U2 in the present application not only transmits the front-stage oscillation signal, but also isolates the front-stage and rear-stage circuits to avoid interference.

[0044] Further, the oscillation signal output by the optocoupler switch U2 controls the alarm driving component T1 to be turned on / off. When the alarm driving component T1 is turned on, the given voltage VCC is supplied to the buzzer BZ through the alarm driving component T1, and at the same time, the indicator LED (through R G2 , limiting current) is lit, realizing “acoustic and light alarm”; when the alarm driving component T1 is turned off, the indicator LED is extinguished, and the buzzer BZ stops generating, ending the “acoustic and light alarm”.

[0045] Further, the output end of the alarm driving component T1 is also connected to the control system 20. The control system 20 can also determine whether there is liquid leakage by monitoring the level signal output by the output end of the alarm driving component T1. Specifically, when the alarm driving component T1 is turned on, the output end of the alarm driving component T1 outputs a high-level signal, determining that there is liquid leakage. At this time, on the one hand, the indicator and the buzzer give a liquid leakage prompt, and on the other hand, the control system 20 can control the medical temperature controller to stop running through the running control interface of the medical temperature controller. When the alarm driving component T1 is turned off, the output end of the alarm driving component T1 outputs a low-level signal, determining that there is no liquid leakage, and the indicator and the buzzer stop alarming, and the control system 20 controls the medical temperature controller to run normally through the running control interface of the medical temperature controller.

[0046] In the present application, the optocoupler switch U2 is used to isolate the connection circuit between the liquid leakage monitoring and control system, so as to ensure the temperature control accuracy of the medical temperature controller. The indicator alarm unit, the buzzer and the control system 20 are used to monitor the liquid leakage situation, realizing a triple alarm network for the liquid leakage situation, adapting to the medical environment, ensuring that the liquid leakage event is found in time, and ensuring that the medical temperature controller is cut off in time when it enters an abnormal running state, avoiding threatening the safety of patients.

[0047] In a preferred embodiment, as shown in Figure 3 the liquid leakage monitoring module provided by the present application has the following working principle: In the case that the medical temperature controller does not leak: the detection electrode P3 corresponding to the liquid leakage monitoring sensor 10 is open, the reverse input pin of the comparison chip U1 inputs a stable reference voltage, and the liquid leakage detection voltage is greater than the reference voltage, the output pin OUT1 of the comparison chip U1 outputs a high level, the oscillation and alarm driving circuit 111 is not triggered, the indicator light LED is not lit, the buzzer BZ does not sound, and the control system 20 detects that the alarm driving component T1 outputs a low level, that is, it is determined that no liquid leakage occurs.

[0048] In the case that the medical temperature controller leaks: the detection electrode P3 corresponding to the liquid leakage monitoring sensor 10 is conductive, the liquid leakage monitoring sensor 10 inputs a varying electrical signal to the comparison circuit, the comparison chip U1 identifies that the liquid leakage detection voltage is less than the reference voltage, the output pin OUT1 of the comparison chip U1 outputs a low level, the signal is isolated by the optocoupler switch U2, drives the indicator light LED1 to flash and the buzzer BZ to sound, respectively, the control system 20 monitors that the alarm driving component T1 outputs a high level, determines that liquid leakage occurs, and stops the medical temperature controller through the operation control interface of the medical temperature controller.

[0049] Based on the same application concept, the embodiments of the present application also provide a control monitoring system applied to a medical temperature controller, which comprises a plurality of operation safety monitoring modules and a control system integrated in the medical temperature controller, and the plurality of operation safety monitoring modules are connected to the control system.

[0050] Please refer to Figure 4 , Figure 4 The structure schematic diagram of the control monitoring system provided by the embodiments of the present application is shown. As shown in Figure 4 , the plurality of operation safety monitoring modules comprise the liquid leakage monitoring module 40, the liquid level detection module 41, the pressure detection module 42, the water temperature detection module 43, the body temperature detection module 44, the sheath detection module 45 and the water pump speed control and speed feedback module 46 provided by any of the above embodiments, and the control monitoring system further comprises an electromagnetic valve control module 47, a temperature control module 48, a screen communication module 49, a power module 50 and a power system 51.

[0051] Among them, the power module 50 provides two voltage inputs to supply the power system 51, specifically, the two voltage inputs are AC voltage AC220V and DC voltage DC24V, the power system 51 supports both AC voltage input and DC voltage input, specifically, the power system 51 processes the voltage conversion of any one input power (AC220V or DC24V) to obtain the required voltage of the control monitoring system, so as to realize the power supply of the control monitoring system.

[0052] In a preferred embodiment, the liquid leakage monitoring module 40 provided by any of the embodiments of the present application monitors the liquid leakage signal and transmits it to the control system 20. The specific working process of the liquid leakage monitoring module 40 is as described above, and will not be described in detail here.

[0053] In a preferred embodiment, the liquid level detection module 41 monitors the water tank liquid level and transmits it to the control system.

[0054] The pressure detection module 42 monitors the waterway pressure value and transmits it to the control system 20.

[0055] The water temperature detection module 43 monitors the temperature of the liquid sent into the medical temperature control instrument sheath and transmits it to the control system 20.

[0056] The body temperature detection module 44 monitors the body temperature of the person being treated and feeds it back to the control system.

[0057] The sheath detection module 45 is used to detect whether the sheath falls off during treatment and transmits the detection result to the control system.

[0058] The water pump speed control and speed feedback module 46 delivers the liquid processed by the temperature control module to the sheath waterway at the speed indicated by the speed control instruction issued by the control system, and reads the water pump speed in real time and feeds it back to the control system.

[0059] In a preferred embodiment, the control system performs the following operations: based on the liquid leakage result signal (output by the alarm driving component T1 output end) output by the collected liquid leakage monitoring module 40, it is determined whether liquid leakage occurs, so as to Figure 3 For example, when the liquid leakage result signal is high, it is determined that liquid leakage occurs, and when the liquid leakage result signal is low, it is determined that liquid leakage does not occur.

[0060] The control system 20 performs the following operations: based on the water tank liquid level transmitted by the liquid level detection module 41, it compares the water tank liquid level with the safe liquid level. If the water tank liquid level is greater than or equal to the safe liquid level, it indicates that the water tank liquid level in the medical temperature control equipment is normal, and if the water tank liquid level is less than the safe liquid level, it indicates that the water tank liquid level in the medical temperature control equipment is abnormal, and the liquid level abnormality prompt is performed through the screen communication module 49.

[0061] The control system 20 performs the following operations: based on the waterway pressure value transmitted by the pressure detection module 42, it determines whether the waterway pressure value is within the safe pressure range (generally, the safe pressure range is 0 Kpa ~ 40 Kpa when the waterway is normally running), if the waterway pressure value is not within the safe pressure range and exceeds the maximum safe pressure threshold 80 Kpa, it indicates that the waterway in the medical temperature control instrument equipment may be in at least any of the following states: waterway blockage, no connection to the sheath waterway, no loop formed, at this time it is determined that the waterway pressure is abnormal, if the waterway pressure value is within the safe pressure range, it indicates that the waterway pressure is in a normal state.

[0062] The control system 20 performs: based on the liquid temperature delivered by the water temperature detection module 43 into the medical temperature controller sheath, determine whether the liquid temperature is in a safe temperature range, specifically, determine whether the liquid temperature is greater than the preset over-temperature temperature or lower than the preset low-temperature temperature, if the liquid temperature is greater than the preset over-temperature temperature or lower than the preset low-temperature temperature, it is determined that the liquid temperature is abnormal, if the liquid temperature is less than or equal to the preset over-temperature temperature and greater than or equal to the preset low-temperature temperature, it indicates that the liquid temperature is in a normal state.

[0063] In this application, for the water temperature detection module 43, two temperature sensors are arranged inside, which redundantly collect the liquid temperature into the medical temperature controller sheath, which prevents the temperature sensor from failing to detect effectively and improves the safety of the instrument.

[0064] The control system 20 performs: based on the body temperature delivered by the body temperature detection module 44, determine whether the body temperature of the treated person is in a safe body temperature range, if the body temperature of the treated person is in a safe body temperature range, it indicates that the body temperature of the treated person is normal, if the body temperature of the treated person is not in a safe body temperature range, it indicates that the body temperature of the treated person is abnormal.

[0065] In this application, the sheath detection module 45 is mainly used to detect whether the sheath is detached, specifically, in the visual window provided by the screen communication module 49, a corresponding sheath detection trigger control is set, in response to the operation performed on the sheath detection trigger control, the sheath detection module 45 corresponding detection function is turned on or turned off, specifically, the control system 20 collects the control signal of the user triggering the sheath detection module 45 through the screen communication module 49, based on the opening or closing of the sheath detection module 45 indicated by the control signal, control the sheath detection module 45 to open or close, when the sheath detection module 45 is opened, detect the type of the sheath and whether the sheath is detached during the treatment process, when the sheath detection module 45 is closed, it does not affect the normal treatment of the sheath. The control system 20 performs: when the sheath detection module 45 is turned on, and the treatment process is started, the sheath detection module 45 is used to determine whether the sheath is detached, if the sheath is detached, it indicates that the sheath is in an abnormal state at this time.

[0066] The control system 20 also performs: when the sheath detection module 45 is turned off, it is detected that the sheath waterway has started to work without being connected to the medical temperature controller, at this time, the waterway pressure value in the medical temperature controller will exceed the safe pressure range, at this time, cooperate with the pressure detection module 42, through the visual window provided by the screen communication module 49, prompt the user to connect the sheath.

[0067] In the present application, the water pump speed control and speed feedback module 46 delivers the liquid processed by the temperature control module 48 to the sheath water circuit based on the speed indicated by the speed control instruction issued by the control system 20. Specifically, the water pump speed control and speed feedback module 46 controls the speed of the water pump based on the PWM speed signal of the control system. The control system 20 compares the real-time reading of the water pump speed with the instruction speed indicated by the speed control instruction, and if the water pump speed is inconsistent with the instruction speed, it indicates that the water pump speed is abnormal.

[0068] In the present application, the control system also monitors the sheath state, liquid level state, liquid temperature state in the sheath of the medical temperature control instrument, body temperature state of the person being treated, leakage state, water circuit pressure state, and water pump state based on the monitoring data transmitted by the leakage monitoring module 40, liquid level detection module 41, pressure detection module 42, water temperature detection module 43, body temperature detection module 44, sheath detection module 45, and water pump speed control and speed feedback module 46 during the treatment process of the medical temperature control instrument. If any of the above states is abnormal, it is determined that the medical temperature control instrument is in an abnormal operating state, and the medical temperature control instrument is stopped. In the present application, stopping the medical temperature control instrument at least includes stopping the water pump, stopping the temperature control module, and controlling the PWM output to the water pump.

[0069] At least one of the following conditions: the water tank liquid level is lower than the safe liquid level, the water circuit pressure value is not in the safe pressure range, the liquid temperature is not in the safe temperature range, the body temperature of the person being treated is not in the safe body temperature range, the sheath falls off during the treatment process, and the water pump speed is inconsistent with the instruction speed, determines that the medical temperature control instrument is in an abnormal operating state, and the medical temperature control instrument is stopped.

[0070] In a preferred embodiment, the electromagnetic valve control module 47 controls the flow direction of the liquid in the water circuit of the medical temperature control instrument in response to the on-off control instruction issued by the control system.

[0071] Specifically, when the electromagnetic valve control module 47 is opened, the electromagnetic valve water circuit is connected to the water tank, and the sheath is filled with liquid. The water circuit flows through the water tank, water pump, electromagnetic valve, temperature control module water circuit, water pipe, sheath, and then flows into the water tank to form a closed loop. When the electromagnetic valve control module 47 is closed, the water circuit circulates the liquid in the sheath. The water circuit flows through the water pump, temperature control component water circuit, water pipe, sheath, and then flows into the water pump to form a closed loop.

[0072] The screen communication module 48 provides a visual interactive window, generates working state setting information for the medical temperature control instrument in response to an operation on the visual interactive window, and transmits the working state setting information to the control system, and the control system adjusts the working state of the medical temperature control instrument based on the working state setting information, and specifically, the visual interactive window supports configuration of at least any one of the following items: a treatment mode, a treatment temperature, a treatment time, starting treatment, and stopping treatment.

[0073] The screen communication module 48 also supports display of data collected by any of the above-mentioned operation safety monitoring modules, and the specific content or interactive operation of the screen communication module 48 is not limited here.

[0074] The temperature control module 49 controls the temperature of the liquid flowing into the sheath waterway in response to a temperature control instruction issued by the control system, and specifically, the temperature of the liquid flowing into the sheath waterway is raised or lowered.

[0075] The application has the following advantages: 1. Adapt to medical scenarios: The medical temperature control instrument designed by the application is adapted to the medical environment requirements in terms of sensor layout, anti-interference design, and alarm mode, and solves the adaptability problem of general circuits in medical scenarios.

[0076] 2. High-precision monitoring: By introducing the comparison circuit provided by the application, small liquid leaks (such as 0.5 mL / h slow leakage) can be accurately identified, the response time of the liquid leak is short (≤0.5 seconds), and the risk of device failure or medical risk caused by the expansion of the liquid leak is effectively avoided.

[0077] 3. High reliability: By selecting medical-grade components and electromagnetic isolation design, the false alarm rate is reduced (≤1%), the stability of the temperature control instrument is ensured, and the safety of the medical equipment is improved.

[0078] 4. The entire liquid leak monitoring module adopts a modular design and can be conveniently integrated into the existing medical temperature control instrument mainboard.

[0079] In summary, the application solves the problem of lack of precision, reliability, and adaptability of existing medical temperature control instruments for liquid leak monitoring, provides key technical support for safe operation of medical equipment and stable medical environment, and has significant medical value and promotion prospects.

[0080] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system and the device described above can refer to the corresponding process in the foregoing method embodiment, and will not be repeated here. In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. The device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and there can be another division manner in actual implementation, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some communication interfaces, devices or units, and can be electrical, mechanical or other forms.

[0081] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., they can be located in one place or distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0082] In addition, the functional units in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit.

[0083] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a non-volatile computer readable storage medium executable by a processor. Based on this understanding, the technical solutions of the present application essentially or the parts that contribute to the prior art or the parts of the technical solutions can be embodied in the form of software products, and the computer software products are stored in a storage medium, including a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment of the present application. The foregoing storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, and various program code storage media.

[0084] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A leak monitoring module, characterized by, The leakage monitoring module is applied to a medical temperature controller, and comprises a leakage monitoring sensor, a micro-leakage detection alarm module and a power access module, The output end of the leakage monitoring sensor is connected to the input end of the micro-leakage detection alarm module, and the output end of the micro-leakage detection alarm module is connected to the control system, and the control system is further connected to the operation control interface of the medical temperature controller; The input end of the power access module accesses a given power supply provided by a power supply system, the given power supply provides a given voltage, and the output end of the power access module accesses the micro-leakage detection alarm module, the leakage monitoring sensor and the control system to supply power to the micro-leakage detection alarm module, the leakage monitoring sensor and the control system.

2. The leakage monitoring module of claim 1, wherein, The size of the leakage monitoring sensor is consistent with the size of the base of the medical temperature controller, and the leakage monitoring sensor is fixedly installed on the base of the medical temperature controller.

3. The leakage monitoring module of claim 1, wherein, The micro-leakage detection alarm module comprises a comparison circuit and a vibration and alarm driving circuit, The input end of the comparison circuit is connected to the output end of the leakage monitoring sensor, the output end of the comparison circuit is connected to the input end of the vibration and alarm driving circuit, and the output end of the vibration and alarm driving circuit is connected to the control system.

4. The leakage monitoring module of claim 3, wherein, The comparison circuit comprises a leakage signal input interface, a voltage division component, a signal pull-up component, a filter component and a comparison chip, The first connection end of the leakage signal input interface is respectively connected to the output end of the leakage monitoring sensor and the non-inverting input pin of the comparison chip, the second connection end of the leakage signal input interface is grounded, the first connection end of the voltage division component is grounded through the filter component, the second connection end of the voltage division component is connected to the non-inverting input pin of the comparison chip and the first connection end of the leakage signal input interface, the third connection end of the voltage division component is connected to the given voltage, the fourth connection end of the voltage division component is grounded, the fifth connection end of the voltage division component is connected to the given reference power supply, the sixth connection end of the voltage division component is connected to the inverting input pin of the comparison chip, the output pin of the comparison chip is respectively connected to the input end of the vibration and alarm driving circuit and the given voltage through the signal pull-up component, the power negative electrode of the comparison chip is grounded, and the power positive electrode of the comparison chip is connected to the given voltage.

5. The leak monitoring module of claim 3, wherein, The vibration and alarm driving circuit comprises a vibration alarm signal generation component, an optical coupling switch, an alarm component and an alarm driving component, The input end of the vibration alarm signal generation component is connected to the output end of the comparison circuit, the output end of the vibration alarm signal generation component is connected to the input side of the optical coupling switch, the output side of the optical coupling switch is connected to the control input end of the alarm driving component, and the output end of the alarm driving component is respectively connected to the alarm component and the control system.

6. The leakage monitoring module of claim 5, wherein, The vibration alarm signal generation component comprises a conduction resistance, a control switch, a first vibration resistance, a second vibration resistance and a vibration capacitor, One end of the conduction resistance is connected to the output end of the comparison circuit, the other end of the conduction resistance is connected to the control end of the control switch, the first connection end of the control switch is connected to the given voltage, the second connection end of the control switch is connected to one end of the oscillation capacitor and the input side anode pin of the optocoupler switch through the first oscillation resistance respectively, the input side cathode pin of the optocoupler switch is grounded, the other end of the oscillation capacitor is connected to the output side emitter pin of the optocoupler switch and grounded through the second oscillation resistance respectively, and the output side collector of the optocoupler switch is connected to the control end of the alarm driving assembly. The first connection end of the alarm driving assembly is connected to the given voltage, and the second connection end of the alarm driving assembly is connected to the alarm assembly and the control system respectively.

7. The leakage monitoring module of claim 5, wherein, The alarm assembly comprises an indicator light alarm unit and a buzzer, The input end of the indicator light alarm unit and the input end of the buzzer are connected to the output end of the alarm driving assembly, and the output end of the indicator light alarm unit and the output end of the buzzer are grounded.

8. The leakage monitoring module of claim 1, wherein, The power supply access module comprises a power supply access interface, an access switch and an anti-interference assembly, The first connection end of the power supply access interface is connected to the power supply input pin of the access switch, the second connection end of the power supply access interface is grounded, the power supply output pin of the access switch leads out the given voltage and is grounded through the anti-interference assembly.

9. A control monitoring system characterized by, The control monitoring system applied to the medical temperature control instrument comprises a plurality of running safety monitoring modules and a control system integrated in the medical temperature control instrument, and the plurality of running safety monitoring modules are connected to the control system respectively, The plurality of running safety monitoring modules comprise the liquid leakage monitoring module, the liquid level detection module, the pressure detection module, the water temperature detection module, the body temperature detection module, the sheath detection module and the water pump speed control and speed feedback module according to any one of claims 1-8; The liquid leakage monitoring module monitors the liquid leakage signal and transmits it to the control system; The liquid level detection module monitors the water tank liquid level and transmits it to the control system; The pressure detection module monitors the waterway pressure value and transmits it to the control system; The water temperature detection module monitors the liquid temperature sent into the sheath of the medical temperature control instrument and transmits it to the control system; The body temperature detection module monitors the body temperature of the treated person and feeds back to the control system; The sheath detection module is used for detecting whether the sheath falls off in the treatment process and transmitting the detection result to the control system; The water pump speed control and speed feedback module delivers the liquid processed by the temperature control module to the sheath waterway according to the speed indicated by the speed control instruction issued by the control system, and reads the water pump speed in real time and feeds back to the control system; If the control system detects at least one of the following conditions: liquid leakage, water tank liquid level lower than the safe liquid level, waterway pressure value not in the safe pressure range, the liquid temperature not in the safe temperature range, the body temperature of the treated person not in the safe body temperature range, the sheath falling off in the treatment process, and the water pump speed inconsistent with the instruction speed, it is determined that the medical temperature control instrument is in an abnormal running state, and the medical temperature control instrument is controlled to stop running.

10. The control monitoring system of claim 9, wherein, The control monitoring system further comprises an electromagnetic valve control module, a temperature control module and a screen communication module, The electromagnetic valve control module controls the liquid flow direction in the water circuit of the medical temperature controller in response to the on-off control instruction issued by the control system. The temperature control module controls the temperature of the liquid flowing into the sheath water circuit in response to the temperature control instruction issued by the control system. The screen communication module provides a visual interactive window, generates working state setting information for the medical temperature controller in response to the operation on the visual interactive window, and transmits the working state setting information to the control system, so that the control system adjusts the working state of the medical temperature controller based on the working state setting information.

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