CN102088281B - Electric switching device based on body fluid PH value in alimentary canal - Google Patents
Electric switching device based on body fluid PH value in alimentary canal Download PDFInfo
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- CN102088281B CN102088281B CN 200910241752 CN200910241752A CN102088281B CN 102088281 B CN102088281 B CN 102088281B CN 200910241752 CN200910241752 CN 200910241752 CN 200910241752 A CN200910241752 A CN 200910241752A CN 102088281 B CN102088281 B CN 102088281B
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Abstract
The present invention provides an electric switching device based on body fluid PH (potential of hydrogen) value in alimentary canal, the device comprises: a signal generation module, used for generating a control signal of a first level or a second level according to the different body fluid PH values; and a control module, electrically connected with the signal generation module and used for generating a corresponding switching signal according to the control signal. Wherein the original state of the control module is a non-working state, when the control signal is in the first level, the control module continues to remain in the working state or changes from the non-working state to the working state, and generates the switching signal of a third level; and when the control signal is in the second level, the control module continues to remain in the non-working state or changes from the working state to the non-working state, and generates the switching signal of a fourth level. The switching signal can automatically switch on or switch off a detection and/or a treatment device electrically connected with the electric switching device, so as to complete the detection and/or treatment for specific area in the alimentary canal.
Description
Technical field
The present invention relates to the electric switchgear of automatic switch, relate in particular to a kind of electric switchgear based on pH value of body in the alimentary canal.
Background technology
Along with the development of the technology such as semiconductor, transducer, new material, the mini-medical of the swallowing detection that occurs in recent years and/or treatment electronic installation can directly enter patient's alimentary canal and carry out test-and-treat.The alimentary canal of human body is one to be risen from the oral cavity, extends for pharynx, oesophagus, stomach, small intestine, large intestine, finally anus very long flesh pipeline.The mini-medical the swallowed device of prior art is under the condition that does not have other reference position informations, be difficult to identify its residing position in human body alimentary canal, therefore, the mini-medical swallowed of prior art detects and/or operating state just opened and enter by the treatment electronic installation in swallowing, and can't just detect accurately when this electronic installation arrives gastral privileged site and execute and control.The mini-medical of can swallowing detects and/or the treatment electronic installation is swallowed to from the oral cavity detects or executes and control the position and need certain hour, and this electronic installation generally is to rely on the battery in the device that power supply is provided, therefore, this device power consumption loss of prior art is serious, and is higher to the power consumption designing requirement of this electronic installation.In addition, the long unsettled possibility of device that increased of this electronic installation opening time.
Summary of the invention
The purpose of this invention is to provide a kind of electric switchgear based on pH value of body in the alimentary canal, to solve the deficiency that to swallow in the prior art and open when mini-medical detects and/or the treatment electronic installation is swallowed in the oral cavity.
The invention provides a kind of electric switchgear based on pH value of body in the alimentary canal, comprising: signal generator module, for the control signal that produces the first level or second electrical level according to the difference of pH value of body; Control module, be electrically connected with described signal generator module, and according to described control signal generation switching signal, the initial condition of described control module is non operating state, when described control signal is in the first level, described control module continues to keep operating state or becomes operating state from non operating state, and produce the described switching signal of the 3rd level, when described control signal is in second electrical level, described control module continues to keep non operating state or becomes non operating state from operating state, and produces the described switching signal of the 4th level.
Further, described signal generator module comprises: signal detection module is used for producing corresponding detection signal according to the difference of the acid-base value of body fluid; Signal processing module is electrically connected with described signal detection module, and described detection signal is processed, and produces corresponding described control signal.
Further, described signal detection module comprises: reference electrode is loaded with constant potential; Input electrode, close with described reference electrode, be used for obtaining induced voltage signal in body fluid and described reference electrode coupling; The acid-base value detection module is electrically connected with described input electrode, is used for described induced voltage signal is processed, and produces described detection signal.
Further, signal generator module comprises: the first electrode; The second electrode, close with described the first electrode, and described the first electrode and the certain thickness electrically non-conductive material that can in the body fluid of specific acid basicity, dissolve of the second electrode surface parcel; The connecting and disconnecting of the circuit detection module, be electrically connected with described the first electrode and the second electrode, for detection of whether conducting between described the first electrode and the second electrode, if conduct, then produce the control signal of described the first level, otherwise produce the control signal of stating second electrical level.
Further, comprise timer in the described control module, timer is used for timing when described switching signal switches to the 3rd level since the 4th level, and when clocking value reached the first timing value, described control module produced the switching signal of described the 4th level.
Further, described timer also be used for when control module in working order, timing when described switching signal switches to the 4th level since the 3rd level, and when clocking value reached the second timing value, described control module produced the switching signal of described the 3rd level.
The invention provides a kind of electric switchgear based on pH value of body in the alimentary canal, after but the swallowing type mini-medical with this electric switchgear detects and/or the treatment electronic installation enters human body alimentary canal, this electric switchgear is judged electric switchgear and detection and therapeutic system gastral zone of living in by the active detecting to the acid-base value of body fluid in the alimentary canal, and automatically open or close according to the switching signal that produces and detect and/or therapeutic system, thereby finish detection and/or treatment to specific region in the alimentary canal.In addition, but the swallowing type mini-medical with this electric switchgear detects and/or therapeutic system is only just opened the specific region in entering alimentary canal, therefore has low in energy consumption, reliability high.
Description of drawings
Fig. 1 is the theory diagram based on the electric switchgear of pH value of body in the alimentary canal of the embodiment of the invention one;
Fig. 2 is the theory diagram of the signal detection module of one embodiment of the invention;
Fig. 3 is the theory diagram of reference electrode, input electrode and acid-base value detection module and the signal processing module of one embodiment of the invention;
Fig. 4 is the theory diagram of reference electrode, input electrode, acid-base value detection module and the signal processing module of another embodiment of the present invention;
Fig. 5 is the theory diagram of the amplification module of one embodiment of the invention;
Fig. 6 is the theory diagram of the control module of one embodiment of the invention;
Fig. 7 is the reference electrode of one embodiment of the invention and the structural representation of input electrode;
Fig. 8 is the theory diagram based on the electric switchgear of pH value of body in the alimentary canal of the embodiment of the invention two;
Fig. 9 is first electrode of one embodiment of the invention and the schematic diagram of the electrically non-conductive material that the second electrode outer wrapping can be dissolved in the body fluid of specific acid basicity;
Figure 10 is that first electrode of one embodiment of the invention and the second electrode are exposed to the schematic diagram in the body fluid.
Among the figure: 101, control signal; 102, switching signal; 103, detection signal; 104, induced voltage signal; 1041, the first induced voltage signal; 1042, the second induced voltage signal; 105, amplification voltage signal; 106, filtering voltage signal; 1071, the first amplification voltage signal; 1072, the second amplification voltage signal; 111, reference electrode; 112, input electrode; 1121, the first input electrode; 1122, the second input electrode; 113, the first amplifier; 114, the second amplifier; 115, the 3rd amplifier; 121, the first electrode; 122, the second electrode; 123, the electrically non-conductive material that in the body fluid of specific acid basicity, dissolves; 124, closure casing; 125, body fluid.
Embodiment
Following examples are used for explanation the present invention, but are not used for limiting the scope of the invention.
Embodiment one
Fig. 1 is the theory diagram based on the electric switchgear of pH value of body in the alimentary canal of the embodiment of the invention one.As shown in Figure 1, electric switchgear based on pH value of body in the alimentary canal comprises signal generator module and control module, signal generator module and control module are electrically connected, and signal generator module comprises signal detection module and signal processing module, and signal detection module and signal processing module are electrically connected.Signal generator module produces the control signal 101 of the first level or second electrical level according to the difference of the acid-base value of body fluid.Control module produces corresponding switching signal 102 according to control signal 101, the initial condition of control module is non operating state, when control signal 101 is in the first level, control module continues to keep operating state or becomes operating state from non operating state, and produce the switching signal 102 of the 3rd level, when control signal 101 was in second electrical level, control module continued to keep non operating state or becomes non operating state from operating state, and produces the switching signal 102 of the 4th level.The mini-medical electronic installation (not shown in figure 1) receiving key signal 102 that can swallow when switching signal 102 is the 3rd level, makes the mini-medical electronic installation in running order to diagnose and/or to treat; When switching signal 102 is the 4th level, the mini-medical electronic installation is quit work.In an embodiment of the present invention, the first level and the 3rd level are high level, and second electrical level and the 4th level are low levels.
As shown in Figure 1, further, signal generator module comprises signal detection module and signal processing module, signal detection module produces detection signal 103 according to the difference of the acid-base value of body fluid, signal processing module is electrically connected with signal detection module, detection signal 103 is processed, produced switching signal 102.
Fig. 2 is the theory diagram of the signal detection module of one embodiment of the invention.As shown in Figure 2, signal detection module comprises reference electrode 111, input electrode 112 and acid-base value detection module, and reference electrode is loaded with constant potential, for example is electrically connected with the positive pole of battery, input electrode 112 is close with reference electrode 111, and the acid-base value detection module is electrically connected with input electrode 112.By obtaining induced voltage signal 104 with the reference electrode coupling, the acid-base value detection module produces detection signal 103 according to induced voltage signal 104 to input electrode 112 in as the body fluid of conducting medium.
Fig. 3 is the theory diagram of reference electrode, input electrode, acid-base value detection module and the signal processing module of one embodiment of the invention.As shown in Figure 3, input electrode comprises the first input electrode 1121 and the second input electrode 1122.It is close to participate in electrode 111 and the first input electrode 1121 and the second input electrode 1122.Reference electrode 111 is electrically connected with the positive pole of battery, battery provides constant electromotive force, after the mini-medical device of can swallowing enters alimentary canal, participate in to be full of body fluid between electrode 111 and the first input electrode 1121 and the second input electrode 1122, body fluid is conducting medium, and owing to participate between electrode 111 and the first input electrode 1121 and the second input electrode 1122 apart from very near, therefore the first input electrode 1121 and the second input electrode 1122 will be coupled with reference electrode 111 respectively, obtain the first induced voltage signal 1041 and the second induced voltage signal 1042.In an embodiment of the present invention, the first input electrode 1121 surface-coated ion-sensitive material film, for example five oxidation two tantalum films.The insensitive material film of the second input electrode 1122 surface-coated ions, for example polytetrafluoroethylene film.Therefore the first input electrode 1121 surface-coated ion-sensitive material films obtain the first different induced voltage signals 1041 in the body fluid of the first input electrode 1121 different pH values of diverse location in the organism alimentary canal; The second input electrode 1122 surface-coated have the insensitive material of ion, therefore obtain metastable the second induced voltage signal 1042 in the body fluid of the second input electrode 1122 various different pH values in the organism alimentary canal.
The acid-base value detection module is electrically connected with input electrode, produces detection signal according to induced voltage signal.As shown in Figure 3, the acid-base value detection module comprises signal amplification module, filtration module and electric voltage frequency modular converter.The signal amplification module is electrically connected with the first input electrode 1121 and the second input electrode 1122, and the first induced voltage signal 1041 and the second induced voltage signal 1042 are carried out the signal amplification, obtains amplification voltage signal 105.Filtration module is electrically connected with the acid-base value detection module, amplification voltage signal 105 is carried out filtering process, and obtains filtering voltage signal 106.The electric voltage frequency modular converter is electrically connected with filtration module, filtering voltage signal 106 is converted to detection signal 103, voltage controlled oscillator in the electric voltage frequency modular converter is converted to the digital oscillator signal with certain frequency to the filtering voltage signal 106 of input, and digital oscillator signal is exactly detection signal 103 here.There are corresponding relation in the frequency of oscillation value of this numeral oscillator signal and the acid-base value of alimentary canal body fluid, and for example the pH value of frequency of oscillation value and body fluid is linear.
Signal processing module receives detection signal, and detection signal is processed the generation control signal.As shown in Figure 3, signal processing module comprises counting module and average value processing and comparison module.Counting module receives detection signal 103 as clock signal, periodically at Preset Time the clock number of clock signal 103 is counted, and obtains frequency values.Average value processing and comparison module average processing to the frequency values that obtains within several cycles, and frequency values and predeterminated frequency value scope after the processing compare, if the frequency values after processing is in predeterminated frequency value scope, think then in the alimentary canal that herein acid-base value satisfies the condition of coupling, it is the position that the mini-medical electronic installation need to detect and/or diagnose, average value processing and comparison module produce the control signal 101 of the first level, and the control signal 101 of namely average value processing and comparison module generation is the first level; If the frequency values after processing is not in predeterminated frequency value scope, think then in the alimentary canal that herein acid-base value does not satisfy the condition of coupling, average value processing and comparison module produce the control number 101 of second electrical level, and also the control signal 101 with regard to average value processing and comparison module generation is second electrical levels.
Fig. 4 is the theory diagram of reference electrode, input electrode, acid-base value detection module and the signal processing module of another embodiment of the present invention.As shown in Figure 4, reference electrode is identical with embodiment shown in Figure 3 with input electrode.
The acid-base value detection module is electrically connected with input electrode, produces detection signal according to induced voltage signal.As shown in Figure 4, the acid-base value detection module comprises the signal amplification module, the signal amplification module is electrically connected with the first input electrode 1121 and the second input electrode 1122, and the first induced voltage signal 1041 and the second induced voltage signal 1042 are carried out signal amplify, obtain amplification voltage signal, amplification voltage signal is exactly detection signal 103.
Signal processing module receives detection signal, and detection signal is processed the generation control signal.As shown in Figure 4, signal processing module comprises the signal comparison module, the signal comparison module receives detection signal 103, the magnitude of voltage of detection signal 103 and predeterminated voltage value are compared, if the magnitude of voltage of detection signal 103 is greater than the predeterminated voltage value, then signal processing module produces the control signal 101 of the first level, otherwise signal processing module produces the control signal 101 of second electrical level.For example, the signal comparison module is Schmidt trigger or voltage comparator.
Fig. 5 is the theory diagram of the signal amplification module of one embodiment of the invention.As shown in Figure 5, the signal amplification module comprises the first amplifier 113, the second amplifier 114 and the 3rd amplifier 115.The first amplifier 113 is electrically connected with the first input electrode 1121, amplifies the first induced voltage signal 1041 and obtains the first amplification voltage signal 1071.The second amplifier 114 is electrically connected with the second input electrode 1122, amplify the second induced voltage signal 1042 and obtain the second amplification voltage signal 1072, the 3rd amplifier 115 receives the first amplification voltage signal 1071 and the second amplification voltage signal 1072, the first amplification voltage signal 1071 and the second amplification voltage signal 1072 respectively as two inputs, difference to the first amplification voltage signal 1071 and the second amplification voltage signal 1072 is amplified, and obtains amplification voltage signal.This amplification voltage signal is sent into filtration module in as shown in Figure 4 the acid-base value detection module as amplification voltage signal 105, carries out signal filtering and processes.Perhaps this amplification voltage signal is sent into signal comparison module in as shown in Figure 5 the signal processing module as detection signal 103, carries out voltage ratio.
In an embodiment of the present invention, the first amplifier 113, the second amplifier 114 and the 3rd amplifier 115 are MOSFET (Metal Oxide Semiconductor Field EffectTransistor, metal oxide semiconductor field effect tube) circuit.As shown in Figure 5, the first input electrode 1121 and the second input electrode 1122 are electrically connected with the grid of the input transistors of the grid of the input transistors of the first amplifier 113 and the second amplifier 114 respectively, therefore, the first induced voltage signal 1041 that the first input electrode 1121 and reference electrode 111 couplings obtain is as the grid voltage of the first amplifier 113, and the second induced voltage signal 1042 that the second input electrode 1122 and reference electrode 111 couplings obtain is as the grid voltage of the second amplifier 114.
Fig. 6 is the theory diagram of the control module of another embodiment of the present invention.As shown in Figure 6, control module reception control signal 101, and according to the corresponding switching signal 102 of control signal 101 generations, the initial condition of control module is non operating state, when control signal 101 is in the first level, control module continues to keep operating state or becomes operating state from non operating state, and produce the switching signal 102 of the 3rd level, when control signal 101 is in second electrical level, control module continues to keep non operating state or becomes non operating state from operating state, and produces the switching signal 102 of the 4th level.Further, control module comprises timer, and when switching signal 102 switched to the 3rd level from the 4th level, timer began timing, and when clocking value reached the first timing value, control module produced the switching signal 102 of the 4th level.Like this, when control module in working order and produce the switching signal 102 of the 3rd level, make the work of mini-medical device and make after the time of its work the first timing value, control module produces the switching signal 102 of the 4th level, and the mini-medical device is quit work.
Further, when control module in working order and switching signal 102 when switching to the 4th level from the 3rd level, timer begins timing, when clocking value reaches the second timing value, control module produces the switching signal 102 of the 3rd level, makes the mini-medical device in running order.Like this, when control module in working order, control module can open and close the mini-medical device repeatedly, makes the mini-medical device repeatedly enter diagnosis and/or therapeutic state and halted state.
Be encapsulated in the closure casing corrosion-resistant and that the material of organism safety is made, not with gastral body fluid environmental exposure based on acid-base value detection module, signal processing module and the control module of the electric switchgear of pH value of body in the alimentary canal.Also encapsulating the part of the needs sealing of the mini-medical electronic installation that is electrically connected with electric switchgear in the closure casing.Reference electrode and input electrode are exposed outside closure casing.Reference electrode and input electrode adopt the good conductivity such as platinum, corrosion-resistant and the metal material of organism safety made, closure casing adopts oxirane material corrosion-resistant and that organism is safe to make, in the acid-base environment of organism alimentary canal body fluid, be corroded preventing, also avoid closure casing to cause the induced voltage signal on the input electrode error to occur to the consumption of Acidity of Aikalinity ion.
Fig. 7 is the reference electrode of one embodiment of the invention and the structural representation of input electrode.As shown in Figure 7, there is depression in the closure casing surface, and for example cylindricality caves in, and the inwall of depression is reference electrode 111, and the positive pole of the battery that reference electrode 111 is interior with being encapsulated in closure casing is electrically connected.Have on the lower surface of depression the first input electrode 1121 and the second input electrode 1122, the first input electrodes 1121 and the second input electrode 1122 respectively be encapsulated in closure casing in signal amplification module electricity link to each other.The first input electrode 1121 surface coverage have the ion-sensitive material film, and the second input electrode 1122 surface coverage have the insensitive material film of ion.After closure immerses the gastral body fluid of organism, body fluid is filled among the depression, so that be full of alimentary canal body fluid between reference electrode 111 and the first input electrode 1121 and the second input electrode 1122, alimentary canal body fluid is conducting medium, therefore, the first input electrode 1121 obtains the first induced voltage signal with reference electrode 111 couplings, and the second input electrode 1122 obtains the second induced voltage signal with reference electrode 111 couplings.
Embodiment two
Fig. 8 be the embodiment of the invention two the theory diagram based on the electric switchgear of pH value of body in the alimentary canal.As shown in Figure 8, electric switchgear based on pH value of body in the alimentary canal comprises signal generator module and control module, signal generator module comprises the first electrode 121, the second electrode 122 and connecting and disconnecting of the circuit detection module, the first electrode 121 and the second electrode 122 are close, and the first electrode and the certain thickness electrically non-conductive material that can dissolve in the body fluid of specific acid basicity of the second electrode surface parcel.The connecting and disconnecting of the circuit detection module is electrically connected with the first electrode 121 and the second electrode 122.Whether the connecting and disconnecting of the circuit detection module detects between the first electrode 121 and the second electrode 122 and conducts, if conduct, then the connecting and disconnecting of the circuit detection module produces the control signal 101 of the first level, otherwise produces the control signal 101 of stating second electrical level.Control module produces corresponding switching signal 102 according to control signal 101, the initial condition of control module is non operating state, when control signal 101 is in the first level, control module continues to keep operating state or becomes operating state from non operating state, and produce the switching signal 102 of the 3rd level, when control signal 101 was in second electrical level, control module continued to keep non operating state or becomes non operating state from operating state, and produces the switching signal 102 of the 4th level.The mini-medical electronic installation that can swallow (not shown among Fig. 8) receiving key signal 102 when switching signal 102 is the 3rd level, makes the mini-medical electronic installation in running order to diagnose and/or to treat; When switching signal 102 is the 4th level, the mini-medical electronic installation is quit work.In an embodiment of the present invention, the first level and the 3rd level are high level, and second electrical level and the 4th level are low levels.
Fig. 9 is first electrode of one embodiment of the invention and the schematic diagram of the electrically non-conductive material that the second electrode outer wrapping can be dissolved in the body fluid of specific acid basicity.As shown in Figure 9, the first electrode 121 and the second electrode 122 near but do not contact and the certain thickness electrically non-conductive material 123 that can in the body fluid of specific acid basicity, dissolve of the coated outside of the first electrode 121 and the second electrode 122.Connecting and disconnecting of the circuit detection module and control module are encapsulated in the closure casing 124, and the first electrode 121 of parcel electrically non-conductive material 123 and the second electrode 122 are outside closure casing 124.The acid-base value of body fluid is different in the gastral zones of different of organism, and for example the body fluid in the stomach is highly acid, and the body fluid in the small intestine enteron aisle is neutral.After the mini-medical electronic installation that is electrically connected with electric switchgear enters the organism alimentary canal, be wrapped in the first electrode 121 and the second electrode 122 outsides electrically non-conductive material 123 so that between the first electrode 121 and the second electrode 122 without conducting medium, be in off state between the first electrode 121 and the second electrode 122, the break-make testing circuit produces the control signal 101 of second electrical level.Figure 10 is that first electrode of one embodiment of the invention and the second electrode are exposed to the schematic diagram in the body fluid.As shown in figure 10, the first electrode 121 and the second electrode 122 are exposed in the body fluid 125.The electrically non-conductive material that can dissolve in the body fluid of specific acid basicity that is wrapped in the first electrode 121 and the second electrode 122 outsides will dissolve after the certain hour in the body fluid 125 of gastral specific acid basicity environment.The electrically non-conductive material that for example is wrapped in the first electrode 121 and the second electrode 122 outsides is the enteric coating that can dissolve in the neutral solution of small intestine enteron aisle, will dissolve after a period of time in the body fluid of enteric coating in enteron aisle.After electrically non-conductive material 123 has dissolved in the body fluid of gastral specific acid basicity, the first electrode 121 and the second electrode 122 are exposed in the body fluid 125, the body fluid 125 that is rich in ion becomes dielectric, makes between the first electrode 121 and the second electrode 122 to conduct.The first electrode 121 links to each other with break-make testing circuit electricity with the second electrode 122, and when being electric conducting state between the first electrode 121 and the second electrode 122, the break-make testing circuit produces the control signal 101 of the first level.
In the previous embodiment, other modules except reference electrode, input electrode, the first electrode and the second electrode all can be realized by solid-state integrated circuit, thereby make electric switchgear have volume little, low in energy consumption, in the gastral characteristics such as the accurate switch in position that need, very suitable and existing mini-medical detects and the therapeutic system integrated installation, thereby Effective Raise is to gastral test-and-treat ability.
Claims (13)
1. the electric switchgear based on pH value of body in the alimentary canal is characterized in that, comprising:
Signal generator module is for the control signal that produces the first level or second electrical level according to the difference of pH value of body;
Control module, be electrically connected with described signal generator module, and according to described control signal generation switching signal, the initial condition of described control module is non operating state, when described control signal is in the first level, described control module continues to keep operating state or becomes operating state from non operating state, and produce the described switching signal of the 3rd level, when described control signal is in second electrical level, described control module continues to keep non operating state or becomes non operating state from operating state, and produces the described switching signal of the 4th level;
Wherein, described signal generator module comprises:
Signal detection module is used for producing corresponding detection signal according to the difference of pH value of body;
Signal processing module is electrically connected with described signal detection module, and described detection signal is processed, and produces corresponding described control signal;
Described signal processing module comprises:
Counting module receives described detection signal as clock signal, is used for periodically counting the clock number of described clock signal in the scheduled time, obtains frequency values;
Average value processing and comparison module, be electrically connected with described counting module, be used for described frequency values is averaged processing, and frequency values and predeterminated frequency value scope after the processing compare, if the frequency values after the described processing is in described predeterminated frequency value scope, then produce the control signal of described the first level, otherwise produce the control signal of described second electrical level.
2. according to the described electric switchgear of claim l, it is characterized in that described the first level and the 3rd level are high level, described second electrical level and the 4th level are low levels.
3. electric switchgear according to claim 1 is characterized in that, described signal detection module comprises:
Reference electrode is loaded with constant potential;
Input electrode, close with described reference electrode, be used for obtaining induced voltage signal in body fluid and described reference electrode coupling;
The acid-base value detection module is electrically connected with described input electrode, is used for described induced voltage signal is processed, and produces described detection signal.
4. electric switchgear according to claim 3 is characterized in that, described input electrode comprises:
The first input electrode is used for obtaining the first induced voltage signal in body fluid and described reference electrode coupling;
The second input electrode is used for obtaining the second induced voltage signal in body fluid and described reference electrode coupling;
Described acid-base value detection module is electrically connected with described the first input electrode and the second input electrode, is used for producing described detection signal according to described the first induced voltage signal and the second induced voltage signal.
5. electric switchgear according to claim 4 is characterized in that, described the first input electrode surface-coated ion-sensitive material, the insensitive material of described the second input electrode surface-coated ion.
6. electric switchgear according to claim 4 is characterized in that, described acid-base value detection module comprises:
The signal amplification module is electrically connected with described the first input electrode and the second input electrode, is used for amplifying described the first induced voltage signal and the second induced voltage signal, obtains amplification voltage signal;
Filtration module is electrically connected with described signal amplification module, is used for that described amplification voltage signal is carried out filtering and processes, and obtains the filtering voltage signal;
The electric voltage frequency modular converter is electrically connected with described filtration module, is used for described filtering voltage signal is converted to digital oscillator signal, and described digital oscillator signal is described detection signal.
7. electric switchgear according to claim 6 is characterized in that, described signal amplification module comprises:
The first amplifier is electrically connected with described the first input electrode, is used for amplifying described the first induced voltage signal, obtains the first amplification voltage signal;
The second amplifier is electrically connected with described the second input electrode, is used for amplifying described the second induced voltage signal, obtains the second amplification voltage signal;
The 3rd amplifier, with described the first amplifier be connected amplifier electric and be connected, be used for amplifying the difference signal of described the first amplification voltage signal and the second amplification voltage signal, obtain described amplification voltage signal.
8. electric switchgear according to claim 7, it is characterized in that, described the first amplifier, the second amplifier and the 3rd amplifier are the MOSFET circuit, described the first input electrode is electrically connected with the grid of the input transistors of described the first amplifier, and described the second input electrode is electrically connected with the grid of the input transistors of described the second amplifier.
9. according to each described electric switchgear among the claim l to 6, it is characterized in that, comprise timer in the described control module, timer is used for timing when described switching signal switches to the 3rd level since the 4th level, and when clocking value reached the first timing value, described control module produced the switching signal of described the 4th level.
10. electric switchgear according to claim 9, it is characterized in that, described timer also be used for when control module in working order, timing when described switching signal switches to the 4th level since the 3rd level, and when clocking value reached the second timing value, described control module produced the switching signal of described the 3rd level.
11. electric switchgear according to claim 3 is characterized in that, described acid-base value detection module, signal processing module and control module are encapsulated in the closure casing, and described reference electrode and input electrode are exposed outside described closure casing.
12. electric switchgear according to claim 11 is characterized in that, described housing is by corrosion-resistant and the material of organism safety made, and described reference electrode and input electrode are by having conductivity, corrosion-resistant and the material of organism safety made.
13. according to claim 11 or 12 described electric switchgears, it is characterized in that there is depression on described closure casing surface, the inner surface of described depression is described reference electrode, and described input electrode is at the lower surface of depression.
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2009
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004006982A2 (en) * | 2002-07-15 | 2004-01-22 | Insulet Corporation | Self-contained, automatic transcutaneous physiologic sensing system |
| CN1774239A (en) * | 2003-01-29 | 2006-05-17 | 埃-皮尔制药公司 | Active drug delivery in the gastrointestinal tract |
| CN201115663Y (en) * | 2007-09-20 | 2008-09-17 | 广州医学院第一附属医院 | Anti-electromagnetic interference upper alimentary tract PH value detection circuit |
| CN101453204A (en) * | 2007-11-21 | 2009-06-10 | E.G.O.电气设备制造股份有限公司 | Operating device for an electrical device and method of operating an operating device |
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