CN105373161A - Hot compress device - Google Patents
Hot compress device Download PDFInfo
- Publication number
- CN105373161A CN105373161A CN201510869196.2A CN201510869196A CN105373161A CN 105373161 A CN105373161 A CN 105373161A CN 201510869196 A CN201510869196 A CN 201510869196A CN 105373161 A CN105373161 A CN 105373161A
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- China
- Prior art keywords
- controller
- electric
- controlled switch
- heating pad
- application device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
- G05D23/303—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature using a sensing element having a resistance varying with temperature, e.g. thermistor
- G05D23/306—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature using a sensing element having a resistance varying with temperature, e.g. thermistor using semiconductor devices
Abstract
The present invention provides a hot compress device, belonging to the field of the medical instrument technology. The hot compress device comprises a first controller, a second controller, at least one group of driving circuits, at least one heating pad and at least one group of temperature sensors. Each heating pad corresponds to one group of temperature sensors and one group of driving circuits; each group of temperature sensors includes a first temperature sensor and a second temperature sensor; and each group of driving circuits includes a first electronic control switch and a second electronic control switch, and the first electronic control switch is a non-contact electronic control switch. The first temperature sensor and the second temperature sensor are respectively connected with the heating pad, the first controller and the second controller. The first controller is connected with the input end of the first electronic control switch, the second controller is connected with the control end of the second electronic control switch, and the first electronic control switch, the second electronic control switch and the heating pad are respectively connected with a power supply. The hot compress device is able to realize the thermostatic control with high precision so as to prevent patients from feeling hot and hot, and has a temperature dual-protection function and high safety.
Description
Technical field
The invention belongs to technical field of medical instruments, relate to a kind of hot application device.
Background technology
Ancestral's medical science thinks the operation using warm mode can improve local meridian qi and blood, and eliminate the wet disease and evil such as to stagnate of wind-cold damp pathogen, qi and blood stasis, phlegm, reach the methods for the treatment of of vital QI recovered after pathogens eliminated object, be called the method for pressing ancient times, the modern times are referred to as hot compress.Herbal fomentation has good curative effect in chronic bone and joint diseases such as treatment knee osteoarthritis, chronic lumbar strain etc., but the therapeutic equipment being suitable for clinical practice is less, and a lot of Chinese medicine hot compress therapeutic still uses the method for artificial hot compress.
Along with modern science and technology incorporate tcm clinical practice treatment, current existing minority is used for therapeutic equipment or the herbal fomentation instrument of clinical herbal fomentation.Although these hot compress instruments or hot compress controller all refer to temperature and arrange and controlling functions, can be the temperature that clinical hot compression therapy provides 40 DEG C ~ 55 DEG C, all there is common deficiency or defect in its temperature-controlling system.The first, these hot compress instruments nearly all adopt a formula temperature to control at present, and position formula controls to be a kind of ON/OFF computer heating control mode of carrying out according to the height of measuring tempeature and set temperature.So temperature is in vibration all the time, control accuracy is low, and patient has heat suddenly to neglect cold sensation; Second, if do not consider that temperature control system breaks down, cause the problem of scalding malpractice, namely how to avoid, when temperature control system lost efficacy or fault causes temperature control to raise as more than 60 DEG C, causing tissue to produce irreversible severe scald accident generation problem.
Summary of the invention
The object of the present invention is to provide one can regulate temperature effective in fault-resistant, the hot application device that security is high by continuous precise.
In order to achieve the above object, solution of the present invention is:
A kind of hot application device, comprises the first controller, second controller, at least one group of driving circuit, at least one heating pad and at least one group of temperature sensor; The corresponding one group of temperature sensor of each heating pad and one group of driving circuit; Often organize described temperature sensor and comprise the first temperature sensor and the second temperature sensor; Often organize described driving circuit and comprise the first electric-controlled switch and the second electric-controlled switch, the first electric-controlled switch is contactless electric control switch; First temperature sensor connects corresponding described heating pad and the first controller, and the second temperature sensor connects corresponding described heating pad and second controller, to send the temperature of the described heating pad of correspondence to the first controller and second controller respectively; First controller connects the input end of the first electric-controlled switch, second controller connects the control end of the second electric-controlled switch, the described heating pad of the first electric-controlled switch, the second electric-controlled switch and correspondence is sequentially connected in series on power supply, to control the first electric-controlled switch and the second electric-controlled switch work by the first controller and second controller according to the temperature of described heating pad.
Described hot application device also comprises transformer, and the first electric-controlled switch, the second electric-controlled switch are connected power supply by described transformer after connecting successively with the heating pad of correspondence.
One output terminal of the first electric-controlled switch connects an output terminal of described transformer, another output terminal connects a normally opened contact of the second electric-controlled switch, another normally opened contact of second electric-controlled switch connects an input end of corresponding described heating pad, and another input end of described heating pad connects another output terminal of described transformer.
First electric-controlled switch is solid-state relay.
Second electric-controlled switch is electromagnetic relay.
Described hot application device also comprises human and machine interface unit, and described human and machine interface unit is connected with the first controller and second controller networking respectively by RS485 serial ports.
Described hot application device comprises eight heating pads, eight groups of corresponding temperature sensors and eight groups of driving circuits.
First controller and second controller are PLC.
First controller is connected with described driving circuit by I/O interface with second controller.
Be integrated with pid control module and Pulse width modulation module in first controller, control to carry out PID according to the temperature of described heating pad and realize the control to the first electric-controlled switch in a pulsed fashion.
Owing to adopting such scheme, the invention has the beneficial effects as follows: hot application device of the present invention can control to carry out continuous temperature adjustment with PID, control accuracy is high, finishing temperature tends towards stability in the treatment temperature of setting, continuous output controlling is achieved by PWM technology, namely can realize high-precision thermostatic control, solve the problem that patient has sometimes hot and sometimes cold sensation; Meanwhile, this hot application device possesses dual-temperature safeguard function, due to a difficult problem that temperature control system trouble or failure causes scald accident to occur when solving clinical herbal fomentation.
Accompanying drawing explanation
Fig. 1 is the structural representation of hot application device in one embodiment of the invention;
Fig. 2 is the structural representation of the driving circuit of hot application device in Fig. 1.
In accompanying drawing: 1, human and machine interface unit; 2, RS485 serial ports; 3, the first controller; 4, second controller; 51, solid-state relay; 52, electromagnetic relay; 6, heating pad; 71, the first temperature sensor; 72, the second temperature sensor; 8, transformer.
Embodiment
Below in conjunction with accompanying drawing illustrated embodiment, the present invention is further illustrated.
The present invention proposes a kind of hot application device, at least one group of driving circuit, transformer 8, at least one heating pad and at least one group of temperature sensor that this hot application device is comprised human and machine interface unit 1, the first controller 3 be connected by RS485 serial ports 2 networking with human and machine interface unit 1 and second controller 4, is connected by I/O interface with the first controller 3 and second controller 4.
The corresponding one group of temperature sensor of each heating pad and one group of driving circuit.Often organize temperature sensor and comprise the first temperature sensor and the second temperature sensor; Often organize driving circuit and comprise the first electric-controlled switch and the second electric-controlled switch, the first electric-controlled switch is contactless electric control switch.
Fig. 1 shows the structural representation of hot application device in one embodiment of the invention; Fig. 2 shows the driving circuit connection diagram of this hot application device.Shown in suspension points as in Figure 1 and Figure 2, this hot application device can comprise multiple heating pad, driving circuit and the temperature sensor organizing correspondence with it more.
In the present embodiment, the first controller 3 and second controller 4 are PLC, are respectively PLC (A) and PLC (B); And be integrated with pid control module and Pulse width modulation module in the first controller 3.First electric-controlled switch is solid-state relay 51, and the second electric-controlled switch is electromagnetic relay 52.Be described with the hot compress terminal comprising solid-state relay 51, electromagnetic relay 52, first temperature sensor 71, second temperature sensor 72 and heating pad 6 below.
First temperature sensor 71 connects corresponding heating pad 6 and the first controller 3, second temperature sensor 72 connects corresponding heating pad 6 and second controller 4, to send the temperature of the heating pad 6 of correspondence to the first controller 3 and second controller 4 respectively.
First controller 3 connects the input end of solid-state relay 51, and second controller 4 connects the control end of electromagnetic relay 52.The heating pad 6 of solid-state relay 51, electromagnetic relay 52 and correspondence is connected successively, and connect power supply by transformer 8, work with the temperature of the heating pad 6 being gathered by the first controller 3 and second controller 4 according to the first temperature sensor 71 and the second temperature sensor 72 and send control solid-state relay 51 and electromagnetic relay 52, thus the control realized the power supply state of heating pad 6 and the break-make of circuit, and then realize controlling the temperature of heating pad 6.Be specially: an output terminal of an output terminal connection transformer 8 of solid-state relay 51, another output terminal connects a normally opened contact of electromagnetic relay 52, another normally opened contact of electromagnetic relay 52 connects an input end of heating pad 6, another output terminal of another input end connection transformer 8 of heating pad 6.
In this hot application device, the temperature controlled heating system that it is core that the first controller 3, solid-state relay 51 and the first temperature sensor 71 form with the first controller 3.Operationally, treatment temperature (i.e. target temperature) is set by regulating human and machine interface unit (i.e. touch-screen) 1 and starts this hot application device afterwards, first controller 3 draws deviate by comparing with temperature settings according to the temperature of the heating pad 6 obtained from the first temperature sensor 71, through the calculating of pid control module, export PID result of calculation and the numerical value be converted between 0 ~ 1000, this numerical value between 0 ~ 1000 is the pulse width time parameter that PWM controls to need, a recurrence interval of I/O output terminal of the first controller 3 is 1000 milliseconds, pulse width is the pwm pulse signal of 0 ~ 1000 pulse width time parameter that pid control module calculates, solid-state relay 51 receives the I/O pulse command synchronous driver output pulse 24VAC of the first controller 3, thus the accurate stepless control realized the temperature of heating pad 6.PID+PWM module in first controller 3 is when carrying out thermostatic control, and temperature control precision can reach ± 0.7 DEG C.Treating temperature as arranged is 49 DEG C, and the PID+PWM carried out through this temperature controlled heating system controls, and the temperature of heating pad tends towards stability at 49 DEG C ± 0.7 DEG C, gives the heat supply of Chinese medicament hot compress device constant temperature.As can be seen here, the temperature controlled heating system be made up of the first controller 3, solid-state relay 51, first temperature sensor 71, can realize the stepless control to heating pad 6 temperature, solve patient perceptions to sometimes hot and sometimes cold problem.
Meanwhile, in this hot application device, the Faulty Temperature control system that the composition such as the first controller 3, second controller 4, electromagnetic relay 52 and the second temperature sensor 72 is core with second controller 4.Operationally, when starting hot compress instrument after regulating human and machine interface unit (i.e. touch-screen) 1 to arrange treatment temperature, the I/O output terminal of second controller 4 sends to the electromagnetic relay 52 in driving circuit 5 and goes code, the normally opened contact of electromagnetic relay 52 is connected, and can obtain normal working voltage with the temperature controlled heating system that the first controller 3 is core.When the temperature of the heating pad 6 that second controller 4 obtains from the second temperature sensor 72 is greater than the first temperature (the present embodiment being 58 DEG C), if such as now the first temperature sensor 71 comes off from heating pad 6, human and machine interface unit 1 displays temperature is room temperature, thus cause the constant temperature of heating pad 6 to raise, when this temperature be elevated to be greater than 58 DEG C time, second controller 4 will send overtemperature alarm by RS485 serial ports 2 to the first controller 3 and human and machine interface unit 1 simultaneously.First controller 3 will be " 0 " by its I/O output pulse width, and the recurrence interval is still the pulse command of 1000 milliseconds, and indicating solid-state relay 51 is closed and exported, and heating pad 6 stops heating, thus avoids high temperature scald accident to occur.When the temperature of heating pad 6 drop to be less than the second temperature (in the present embodiment, being 54 DEG C) time, second controller 4 sends releasing overtemperature alarm signal by RS485 serial ports 2 to the first controller 3 and human and machine interface unit 1 simultaneously, and the temperature that the first controller 3 can recover aforementioned normal digital PID+PWM controls working method.Thus achieve the first degree of reviewing protection of this hot application device, and similar self-healing function, do not need manual intervention.
In addition, in the process that this hot application device runs, following fault likely occurs and causes the temperature of heating pad 6 too high, such as, the first temperature sensor 71 on heating pad 6 breaks down, and causes actual temperature higher than measured temperature; First controller 3 breaks down, and the pulse command causing its I/O port to export is always conducting, thus makes solid-state relay 51 be in conducting state all the time; Or solid-state relay 51 is breakdown causes permanent conduction etc.If in these cases, the constant temperature of heating pad 6 raises, when being greater than the 3rd temperature (in the present embodiment being 60 DEG C), after second controller 4 obtains this temperature value from the second temperature sensor 72, out code will be sent to electromagnetic relay 52 by its I/O port, adopt physics mode to cut off the operating voltage of heating pad 6, and can not automatically recover, restart this hot application device after whole control system must be closed and manual ON electromagnetic relay 52.Meanwhile, second controller 4 sends temperature fault by RS485 serial ports 2 to human and machine interface unit 1 and reports to the police and close prompting, thus achieves the second degree of reviewing protection to heating cushion 6, and can not automatically recover, and must restart after closing control system.If although adopt Thermal Cutoffs to substitute electromagnetic relay 52 also can realize this function, its precision is lower, may disturb the normal work of this hot application device; Secondly, once there is the too high phenomenon of said temperature, Thermal Cutoffs can not work being destroyed again, and carries out the needs of repeated authentication test when cannot meet production testing.
In the present embodiment, the first controller and second controller all adopt the PLC of mitsubishi FX2N series, form by a FX2N-16MT-001 and two FX2N-4AD-PT; The model of solid-state relay 51 is JGX-6FA, and control voltage is 3 ~ 35VDC, and load voltage is alternating current 220V AC; Electromagnetic relay 52 adopts HK4100F-24V; The power of heating pad 6 is 40W; First temperature sensor 71 and the second temperature sensor 72 all adopt PT100; The power of transformer 8 is 300W, and output voltage is 24VAC.The temperature adjustable extent of this hot application device is 40 DEG C ~ 54 DEG C, and accuracy of temperature control is ± 0.7 DEG C, can comprise 8 separate treatment terminals, namely comprise eight heating pads, eight groups of corresponding temperature sensors and eight groups of driving circuits.
Hot application device of the present invention can control to carry out continuous temperature adjustment with PID, control accuracy is high, and finishing temperature tends towards stability in the treatment temperature of setting, achieves continuous output controlling by PWM technology, namely can realize high-precision thermostatic control, solve the problem that patient has sometimes hot and sometimes cold sensation; Meanwhile, this hot application device possesses dual-temperature safeguard function, due to a difficult problem that temperature control system trouble or failure causes scald accident to occur when solving clinical herbal fomentation.
Above-mentioned is can understand and apply the invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to embodiment here, those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.
Claims (10)
1. a hot application device, is characterized in that: comprise the first controller, second controller, at least one group of driving circuit, at least one heating pad and at least one group of temperature sensor; The corresponding one group of temperature sensor of each heating pad and one group of driving circuit;
Often organize described temperature sensor and comprise the first temperature sensor and the second temperature sensor; Often organize described driving circuit and comprise the first electric-controlled switch and the second electric-controlled switch, the first electric-controlled switch is contactless electric control switch;
First temperature sensor connects corresponding described heating pad and the first controller, and the second temperature sensor connects corresponding described heating pad and second controller, to send the temperature of the described heating pad of correspondence to the first controller and second controller respectively;
First controller connects the input end of the first electric-controlled switch, second controller connects the control end of the second electric-controlled switch, the described heating pad of the first electric-controlled switch, the second electric-controlled switch and correspondence is sequentially connected in series on power supply, to control the first electric-controlled switch and the second electric-controlled switch work by the first controller and second controller according to the temperature of described heating pad.
2. hot application device according to claim 1, is characterized in that: described hot application device also comprises transformer, and the first electric-controlled switch, the second electric-controlled switch are connected power supply by described transformer after connecting successively with the heating pad of correspondence.
3. hot application device according to claim 2, it is characterized in that: an output terminal of the first electric-controlled switch connects an output terminal of described transformer, another output terminal connects a normally opened contact of the second electric-controlled switch, another normally opened contact of second electric-controlled switch connects an input end of corresponding described heating pad, and another input end of described heating pad connects another output terminal of described transformer.
4. hot application device according to claim 1, is characterized in that: the first electric-controlled switch is solid-state relay.
5. hot application device according to claim 1, is characterized in that: the second electric-controlled switch is electromagnetic relay.
6. hot application device according to claim 1, is characterized in that: described hot application device also comprises human and machine interface unit, and described human and machine interface unit is connected with the first controller and second controller networking respectively by RS485 serial ports.
7. hot application device according to claim 1, is characterized in that: described hot application device comprises eight heating pads, eight groups of corresponding temperature sensors and eight groups of driving circuits.
8. hot application device according to claim 1, is characterized in that: the first controller and second controller are PLC.
9. hot application device according to claim 8, is characterized in that: the first controller is connected with described driving circuit by I/O interface with second controller.
10. hot application device according to claim 1, it is characterized in that: in the first controller, be integrated with pid control module and Pulse width modulation module, control to carry out PID according to the temperature of described heating pad and realize the control to the first electric-controlled switch in a pulsed fashion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510869196.2A CN105373161A (en) | 2015-12-02 | 2015-12-02 | Hot compress device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510869196.2A CN105373161A (en) | 2015-12-02 | 2015-12-02 | Hot compress device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105373161A true CN105373161A (en) | 2016-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510869196.2A Pending CN105373161A (en) | 2015-12-02 | 2015-12-02 | Hot compress device |
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| Country | Link |
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| CN (1) | CN105373161A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018473A (en) * | 2016-07-15 | 2016-10-12 | 东华大学 | Rapid thermal resistance testing device for warm clothing material |
| CN108096713A (en) * | 2017-12-18 | 2018-06-01 | 西安豪丰工业科技实业有限公司 | The hot application device and its temperature-rising method that a kind of controllable temperature rises |
| CN108762338A (en) * | 2018-08-14 | 2018-11-06 | 滁州国康医疗仪器有限公司 | Electric pad temperature control equipment |
| CN111623409A (en) * | 2018-04-28 | 2020-09-04 | 侯苏华 | Networking method of geothermal pad and geothermal pad |
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| CN204798117U (en) * | 2015-08-06 | 2015-11-25 | 童领 | Warm palace hot compress bag |
| CN205158171U (en) * | 2015-12-02 | 2016-04-13 | 平湖邑飞光电科技有限公司 | Fomentation device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018473A (en) * | 2016-07-15 | 2016-10-12 | 东华大学 | Rapid thermal resistance testing device for warm clothing material |
| CN108096713A (en) * | 2017-12-18 | 2018-06-01 | 西安豪丰工业科技实业有限公司 | The hot application device and its temperature-rising method that a kind of controllable temperature rises |
| CN111623409A (en) * | 2018-04-28 | 2020-09-04 | 侯苏华 | Networking method of geothermal pad and geothermal pad |
| CN108762338A (en) * | 2018-08-14 | 2018-11-06 | 滁州国康医疗仪器有限公司 | Electric pad temperature control equipment |
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Application publication date: 20160302 |
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