CN205493825U - Human body component analyzer - Google Patents
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- CN205493825U CN205493825U CN201620046880.0U CN201620046880U CN205493825U CN 205493825 U CN205493825 U CN 205493825U CN 201620046880 U CN201620046880 U CN 201620046880U CN 205493825 U CN205493825 U CN 205493825U
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- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
The utility model discloses a human body component analyzer, include: detection electrode unit, controlling means and analytical equipment, the detection electrode unit is connected with controlling means, and controlling means and analytical equipment are connected, detection electrode unit and people's physical contact for output measuring current gathers the detected signal, and wherein, the measuring current of a plurality of frequencies can be exported to the detection electrode unit, the frequency and the receiving detection signal of controlling means control survey electric current, controlling means will detect signal transmission to analytical equipment, and analytical equipment carries out the analysis based on the detected signal to body composition. The utility model discloses a human body component analyzer adopts the multifrequency mode to carry out biological impedance and measures, can cover human extracellular composition and intracellular composition and measure required whole frequencies for measuring result is more accurate, and have characteristics such as the elimination of electrode tip contact impedance, cable impedance elimination in excess supply, the improvement of weight accuracy, can obtain more accurate organism and become the subdata.
Description
Technical field
This utility model relates to human body component detection technique field, particularly relates to a kind of bioelectrical impedance analysis instrument.
Background technology
Human body is made up of moisture, protein, fat and mineral etc., and these four material is the basis of composition human body, and the balance between them is extremely important to health.Bioelectrical impedance analysis instrument is that one is measured the method for bio-electrical impedance (BIA) and determined the instrument of human body component.It uses faint, human body sensory less than alternating constant current, by human body hands, foot be connected with electrode, measurement each ingredient of human body impedance value.Body fat mass in human body is electrical insulator, and muscle moisture is more, and for easy conductive body, if fat content is many, muscle is few, and when electric current passes through, biochemistry resistance value is of a relatively high；Otherwise, biochemical resistance value is relatively low.By information above, the mathematical model according to all ages and classes, sex and different crowd can be with quantitative analysis human body composition.The human body component that bioelectrical impedance analysis instrument records has: 8 kinds of compositions such as intracellular fluid, extracellular fluid, total water, body fat, body protein, muscle, lean body mass and mineral.
Bioelectrical impedance analysis instrument is not the instrument of diagnosis specified disease, but a kind of quick mensuration human body component instrument that experimenter's health is estimated, it can be used for the purposes of following several respects: hospital: department of endocrinology (mainly curing diabetes), Cardiovascular Section, fat-reducing outpatient service and the clinical nutrition section office etc. of each great synthesis hospital；Beauty parlor: the client of liposuction and weight reducing can be carried out body composition measurement and body composition evaluation；Gymnasium: to carrying out the people of body-building for a long time, carry out body composition measurement before and after per stage body-building, in order to monitoring quantity of motion size at any time；Sports team: athlete can carry out body weight monitoring, and close observation athletic body composition and situation of change, correctly judge the fat in athlete's body and Lean mass, in order to improve sports achievement；Sanatorium: can be used for physical examination daily in sanatorium and the diagnosis of senile disease (such as: hypertension, diabetes, hyperlipidemia etc.)；Other: are as in the place such as kindergarten, Senior Citizen Activity Center.
But, traditional bioelectrical impedance analysis instrument measures great majority and uses unifrequency to measure, and the effect that different frequency penetrates body fat and cell wall is different, if using unifrequency, electric current is difficult to penetration cell wall, can only measure the general ECW of human body and other composition.Further, the surface measuring motor can be because the oxygen in air or air humidity spontaneously form oxygenatedchemicals, the accuracy that impact is measured.
Utility model content
In view of this, a technical problem to be solved in the utility model is to provide a kind of bioelectrical impedance analysis instrument.
A kind of bioelectrical impedance analysis instrument, including: detecting electrode unit, control device and analytical equipment；Described detecting electrode unit is connected with described control device, and described control device is connected with analytical equipment；Described detecting electrode unit and human contact, be used for exporting measurement electric current acquisition testing signal, and wherein, described detecting electrode unit can export the measurement electric current of multiple frequency；Described control device controls the frequency of described measurement electric current and receives described detection signal；Described detection signal is sent to described analytical equipment by described control device.
According to an embodiment of the present utility model, further, described control device includes: sinusoidal signal generator module；Described sinusoidal signal generator module produces the sine-shaped measurement electric current being applied on described detecting electrode unit, and wherein, the frequency of described measurement electric current includes: 1kHz, 5kHz, 50kHz, 250kHz, 500kHz, 1000kHz.
According to an embodiment of the present utility model, further, the quantity of described detecting electrode unit is 4；Wherein, what 2 described detecting electrode unit were fixed on bioelectrical impedance analysis instrument holds on handle, and 2 described detecting electrode unit are fixed on the pedal of bioelectrical impedance analysis instrument.
According to an embodiment of the present utility model, further, described detecting electrode unit includes: the first detecting electrode, described second detecting electrode；Described first detecting electrode and described second detecting electrode all with human contact, described first detecting electrode export described measurement electric current, described second detecting electrode gather described detection signal.
According to an embodiment of the present utility model, further, electrode drive circuit module；Described detecting electrode unit, described electrode drive circuit module and described control device are sequentially connected with.
According to an embodiment of the present utility model, further, the quantity of described electrode drive circuit module is 4；Described electrode drive circuit module and described detecting electrode unit are that one_to_one corresponding is arranged.
According to an embodiment of the present utility model, further, described electrode drive circuit module includes: the first signal isolating transformer, secondary signal isolating transformer；The primary coil of described first signal isolating transformer is connected with described first detecting electrode, and the secondary coil of described first signal isolating transformer is connected with described control device；The primary coil of described secondary signal isolating transformer is connected with described second detecting electrode, and the secondary coil of described secondary signal isolating transformer is connected with described control device.
According to an embodiment of the present utility model, further, described electrode drive circuit module includes: the first voltage follower, the second voltage follower；The two ends of described first voltage follower are connected with described first detecting electrode, described control device respectively；The two ends of described second voltage follower are connected with described second detecting electrode, described control device respectively.
According to an embodiment of the present utility model, further, described electrode drive circuit module includes: filtration module；Described filtration module is connected with described second detecting electrode, described control device respectively.
According to an embodiment of the present utility model, further, body weigher；Described body weigher is connected with described control device, and the body weight information of detection is sent to described control device.
According to an embodiment of the present utility model, further, described body weigher includes: sensor assembly, power supply circuits module, signal amplifying and conditioning circuit module and analog-to-digital conversion module；Wherein, described sensor assembly, described signal amplifying and conditioning circuit module and described analog-to-digital conversion module are sequentially connected with；Described analog-to-digital conversion module is connected with described control device.
According to an embodiment of the present utility model, further, described power supply circuits module includes: operational amplifier, PNP type triode and voltage stabilizing chip；The VREF foot output reference voltage of described voltage stabilizing chip；Described VREF foot is connected by the positive input terminal of the first resistance and described operational amplifier, forms first line；One end ground connection of the second resistance, the other end is connected with the outfan of described operational amplifier, forms the second circuit；One end of first electric capacity connects on the second line are each, and the other end is connected in described first line and its junction point is between described second resistance and described outfan；One end ground connection of the second electric capacity, the other end is connected in described first line and its junction point is between the junction point and described second resistance of described first electric capacity；The negative input end of described operational amplifier is connected with the colelctor electrode of described audion by the 4th resistance, forms tertiary circuit；One end ground connection of the 3rd resistance, the other end are connected on described tertiary circuit and it connects node between described 4th resistance and described negative input end；The Input voltage terminal of described operational amplifier is connected with the base stage of described audion, and, described Input voltage terminal is connected with the emitter stage of described audion by the 5th resistance；One end of 3rd electric capacity is connected on described 5th resistance and described emitter stage line, other end ground connection；One end of power supply output lead is connected on described tertiary circuit and its junction point is between described 4th resistance and described colelctor electrode；One end of 4th electric capacity is connected on described power supply output lead, other end ground connection.
According to an embodiment of the present utility model, further, including power isolation module；Described control device is connected with power supply by described power isolation module respectively with described analytical equipment.
According to an embodiment of the present utility model, further, including printer, audio output device and touch display screen；Described printer is connected with described analytical equipment, and described audio output device is connected with described analytical equipment and described control device respectively, and described touch display screen is connected with described analytical equipment and described control device respectively.
According to an embodiment of the present utility model, further, including memory module and communication module；Described memory module is connected with described analytical equipment；Described communication module is connected with described analytical equipment and described control device respectively, and described communication module includes: Ethernet unit, 2G/3G radio-cell, GPRS unit, wifi unit
Bioelectrical impedance analysis instrument of the present utility model, multifrequency mode is used to carry out biological impedance, the whole frequencies needed for the outer composition of human body cell and cellular content measurement can be covered, make measurement result more accurate, and have the elimination of electrode tip contact impedance, long cable impedance eliminates, measured body weight accuracy carries high, biological component data more accurately can be obtained, and there is good human-computer interaction interface and abundant communication interface, it is possible to be convenient for measuring the mutual of data and management.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the module composition schematic diagram of an embodiment according to bioelectrical impedance analysis instrument of the present utility model；
Fig. 2 is the main frame front view of an embodiment according to bioelectrical impedance analysis instrument of the present utility model；
Fig. 3 is the main frame top view of an embodiment according to bioelectrical impedance analysis instrument of the present utility model；
Fig. 4 is the schematic diagram that human body impedance measured by bioelectrical impedance analysis instrument of the present utility model；
Fig. 5 is the schematic diagram of the impedance of the detecting electrode measurement hands of bioelectrical impedance analysis instrument of the present utility model；
Fig. 6 is the schematic diagram of the impedance of the detecting electrode measurement foot of bioelectrical impedance analysis instrument of the present utility model；
Fig. 7 is that the multifrequency of bioelectrical impedance analysis instrument of the present utility model measures the circuit diagram forming loop；
Fig. 8 is the module diagram of the body weigher of an embodiment according to bioelectrical impedance analysis instrument of the present utility model；
Fig. 9 is the schematic diagram of the signal amplifying and conditioning circuit module of body weigher of the present utility model；
Figure 10 is the schematic diagram of the power supply circuits module of body weigher of the present utility model.
Detailed description of the invention
With reference to the accompanying drawings this utility model is described more fully, exemplary embodiment of the present utility model is wherein described.Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, all other embodiments that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.Below in conjunction with each figure and embodiment, the technical solution of the utility model is carried out many descriptions.
" first ", " second " hereinafter etc., for distinguishing on describing, do not have other special implication.
As it is shown in figure 1, this utility model provides a kind of bioelectrical impedance analysis instrument to include: detecting electrode unit 181,182,183,184, control device 12 and analytical equipment 11.The quantity of detecting electrode unit can be one or more.Detecting electrode unit is connected with controlling device 12, controls device 12 and is connected with analytical equipment 11.Detecting electrode unit 181,182,183,184 and human contact, output measurement electric current acquisition testing signal, detecting electrode unit 181,182,183,184 can export the measurement electric current of multiple frequency.Control device 12 to control measure the frequency of electric current and receive detection signal.Controlling device 12 and detection signal is sent to analytical equipment 11, human body component is analyzed by analytical equipment 11 based on detection signal.
Control device 12 to include: sinusoidal signal generator module.Sinusoidal signal generator module produces and is applied to detecting electrode unit 181, the sine-shaped measurement electric current on 182,183,184.The frequency measuring electric current includes: 1kHz, 5kHz, 50kHz, 250kHz, 500kHz, 1000kHz etc..Controlling device 12 uses constant-current source to apply the of short duration AC signal of the controlled about 100-500 μ A of size to human body, is used for gathering human body impedance.
Bioelectrical impedance analysis instrument in above-described embodiment, uses multi-frequency measurement circuit, mixes multi-frequency in the measurements, it is possible to cover the whole frequencies needed for the outer composition of human body cell and cellular content measurement so that measurement result is more accurate.The stability of result that this bioelectrical impedance analysis instrument measures, accuracy, repeatability is used all to be far superior to the result of traditional product.
As shown in Figure 2,3, the quantity of detecting electrode unit is 4.What 2 detecting electrode unit were fixedly mounted on bioelectrical impedance analysis instrument holds on handle 21, and 2 detecting electrode unit are fixedly mounted on the pedal 22 of bioelectrical impedance analysis instrument.Detecting electrode unit includes: first detecting electrode the 23, second detecting electrode 24.First detecting electrode 23 all contacts with human body (hands, foot) with the second detecting electrode 24, and electric current, the second detecting electrode 24 acquisition testing signal are measured in the first detecting electrode 23 output.
The driving electric current being applied to load (human body) of the first detecting electrode 23 output, has the advantages that current values is constant, and constant being beneficial to of electric current eliminates external disturbance.Impedance signal, as signals collecting end, is sampled, is collected by the second detecting electrode 24, and its input impedance is the biggest, and anti-interference is the strongest.
As shown in Figure 4, detecting electrode unit uses A, B bipolar electrode sheet way of contact, is connected with the limbs of human body, and first detecting electrode the 23, second detecting electrode 24 is respectively A, B electrode.Assuming that contact impedance is ZA, ZB, A (or B) the excitation constant current micro-electric current output producing safety, B (or A) carry out sampling input.
At the foot electrode (with the torch pole) electrode contact as common measurement human body impedance, owing to human body skin has contact resistance, parasitic capacitive reactance, reactance, it is equivalent to contact impedance Z, if not eliminated, this contact impedance Z can be added to when then measuring in the middle of circuit sampling, affect the stability of sampling precision and repetitive measurement.
As shown in Figure 5,6, measuring electric current and flowed into human body by A point, measure voltage and gathered by B point, the resistance value now recorded is the human body impedance of-C point that crosses of virtual A Yu B.The electrode measurement mode of the most traditional transceiver is changed into A point input current signal, the mode that B point takes out the transmitting terminal of voltage signal, collection terminal is separated, solves because the accuracy of sampled result that causes of the factors such as the contact impedance series connection of A point or B point and repeated bad problem.
C point is real human body impedance measuring point, the characteristic of A (or B) some constant-current source, the electric current determining input human body will not be affected by ZA, owing to B (or A) point is high impedance sampling input, during the relatively small skin contact impedance ZB of superposition, can ignore the ZB impact on sampling input impedance, sampled point is still equivalent to C point, eliminates skin contact impedance.
During using, the metal body surface of detecting electrode can be because oxygen or air humidity in air spontaneously form oxygenatedchemicals, and these compounds can improve the contact resistance on surface.At present, the method reducing contact resistance is substantially by covering different conducting mediums.
In bioelectrical impedance analysis instrument of the present utility model, electrode drive circuit module is set, the quantity of electrode drive circuit module can be one or more, such as, the quantity of electrode drive circuit module is 4, electrode drive circuit module 171,172,173,174 with detecting electrode unit 181,182,183,184 arrange for one_to_one corresponding and connect.Electrode drive circuit module and control device 12 connect, and electrode drive circuit module has several functions, such as, and isolation, voltage stabilizing, filtering etc..
Electrode drive circuit module includes: the first signal isolating transformer, secondary signal isolating transformer.The primary coil of the first signal isolating transformer and the first detecting electrode connect, and the secondary coil of the first signal isolating transformer is connected with controlling device.The primary coil of secondary signal isolating transformer and the second detecting electrode connect, and the secondary coil of secondary signal isolating transformer is connected with controlling device.
Use isolating transformer that the first detecting electrode 23 output is measured electric current and the second detecting electrode 24 acquisition testing signal is effectively isolated, it is beneficial to promote human-body safety coefficient, the stability that enhancing signal gathers, it can be avoided that back end signal was surprisingly applied to human body application part when losing efficacy, reduce the risk of the back end signal of Human Tolerance.
In one embodiment, electrode drive circuit module includes: the first voltage follower, the second voltage follower.The two ends of the first voltage follower are connected with the first detecting electrode, control device 12 respectively.The two ends of the second voltage follower are connected with the second detecting electrode, control device 12 respectively.
Use voltage follower, make output signal be equivalent to a constant pressure source, do not affected by circuit below, the isolation of front stage circuit is got up so that it is be independent of each other.Electrode drive circuit module also includes: filtration module.Filtration module is connected with the second detecting electrode 24, control device respectively, and the detection signal that the second detecting electrode 24 gathers can be filtered processing by filtration module, improves the accuracy of detection.
There is own impedance in transmission cable, the impedance embodied simultaneously for different frequency is different, and, in traditional product, human limb is directly connected by long cable with impedance signal Acquisition Circuit, and the impedance of long cable itself is entered in superposition, additionally, weak signal in long cable is highly susceptible to the interference of external interference source, causes sampled data misalignment.
Bioelectrical impedance analysis instrument of the present utility model is adding electrode drive circuit module at the detecting electrode of human contact, and electrode drive circuit module can be implemented as circuit board, may be mounted at detecting electrode.Electrode drive circuit module can reduce the line length of signal transmission, reduces interference；And; voltage follower in electrode drive circuit module makes output signal be equivalent to a constant pressure source, can eliminate the impact of cable impedance, and use isolating transformer to be isolated by front stage circuit; play insulation blocking, use filtration module to play the effect of signal filtering.
As it is shown in fig. 7, bioelectrical impedance analysis instrument of the present utility model produces the two paths of differential signals of opposite in phase by differential signal generator, then selected the people's body loop connected by analog switch, such as left hand and left foot, the right hand and right crus of diaphragm etc..Bioelectrical impedance analysis instrument of the present utility model selects to gather the two ends of signal by analog switch, and such as left hand and right crus of diaphragm, the right hand and left foot etc., on detecting electrode, the order of loading frequency is followed successively by: 5khz, 50khz, 250khz, 500khz, 1khz, 1mhz.By the direct current signal input analytical equipment containing impedance information being analyzed, calculating after the signal collected is carried out difference, filtering again, the resistance value needed i.e. can be obtained.
Bioelectrical impedance analysis instrument of the present utility model is provided with power isolation module, controls device 12 and is connected with power supply by power isolation module respectively with analytical equipment 11.Such as, power supply is civil power 220VAC, and civil power, after the isolation of power isolation module, is carried on control device 12 and analytical equipment 11.Power isolation module can be multiple isolation module of the prior art.Digital signal and analogue signal are all isolated by bioelectrical impedance analysis instrument of the present utility model, stable, it is ensured that digital communication normal, and ensure the signals security being applied on human body.
In one embodiment, control device 12 and can be implemented as single-chip microcomputer, single board computer, integrated circuit etc..Analytical equipment 11 can be implemented as single-chip microcomputer, single board computer, PC etc..Analytical equipment 12, based on detection signal, body weight information and personal information, calculates human body component parameter according to human body component detection formula and extrapolates human body indicators.Personal information includes: age, sex, height etc..Human body indicators includes: body fat percentage, basal metabolic rate, standard body weight, target weight etc..Analytical equipment 11 is according to human body indicators and individual sports, diet information generation nutrition curve, dietary recommendation.
Analytical equipment 11 can become grading information analyse diet nutritional scientifically and instruct in conjunction with individual motion, diet, sleep and various body, in the way of nutrition curve, individual nutriture is displayed, make every experimenter can have one to the nutrition of self intuitively, clearly recognize, and according to take in nutrient number provide the dietary recommendation of science, it is to avoid cause the problems such as malnutrition, nutrient imbalance or overnutrition.
Bioelectrical impedance analysis instrument of the present utility model is provided with printer 13, audio output device 15, touches display screen 14, memory module and communication module 16.Printer 13 is connected with analytical equipment 11, it is possible to print analysis result etc..Audio output device 15 is connected with analytical equipment 11 and control device 12 respectively, it is possible to play control command, analysis result etc..Touch display screen 14 to be connected with analytical equipment 11 and control device 12 respectively, multiple instruction can be inputted, and control and analysis result can be shown.Memory module is connected with analytical equipment 11, is used for storing analysis result etc..Communication module 16 respectively with analytical equipment 11 and control device 12 and be connected, communication module includes: Ethernet unit, 2G/3G radio-cell, GPRS unit, wifi unit etc., for receiving and sending messages or communicating with other equipment.
Bioelectrical impedance analysis instrument in above-described embodiment, it is provided that man-machine dialog interface, uses contact action mode, optimizes interactive experience；The form exported by printed report, presents measurement data in time；There is sound prompt function, during somatometry, testee operation posture and points for attention can be pointed out, reduce the operation easier of experimenter；Measurement data can preserve in the local database in real time, and provides outside access interface, it is achieved networking also can carry out data summarization and management.
Body weigher 19 is connected with controlling device 12, is sent to the body weight information of detection control device 12.Body weight information is as the Back ground Information of bioelectrical impedance analysis, the underlying parameter calculated for human body Component Model, if measuring inaccurate or measuring stability, poor repeatability, it will amplify the output result affecting other compositions.
As shown in Figure 8, body weigher includes: sensor assembly 41, power supply circuits module 44, signal amplifying and conditioning circuit module 42 and analog-to-digital conversion module 43.Sensor assembly 41, signal amplifying and conditioning circuit module 42 and analog-to-digital conversion module 43 are sequentially connected with.Analog-to-digital conversion module 43 is connected with controlling device 12, is sent to control device 12 by the body weight information after conversion, and body weight information is sent to analytical equipment 11 and is analyzed by control device 12.Sensor assembly 41 can individually be powered by power supply circuits module 44, it is also possible to be powered signal amplifying and conditioning circuit module 42 and analog-to-digital conversion module 43 simultaneously.
As it is shown in figure 9, signal amplifying and conditioning circuit module can have multiple implementation, such as, the signal amplifying and conditioning circuit module with signal protection function is used to be amplified the signal of sensor assembly collection processing.VA14, VA15, VA21, VA22 are pressure-sensitive protection device, and the signal for outside input is accomplished effectively to protect.R236, C388 and R240, C92 can effectively protect signal to be in steady statue, it is to avoid cause the distortion of rear class output signal when inputting unsettled.160 times of operation amplifier circuits of the dual input that U47A, U47B are, amplify the signal that body weight sensor sends, utilize C502, C503 enhancing signal stability.
As shown in Figure 10, power supply circuits module can use various ways, and such as, power supply circuits module includes: operational amplifier U66A, PNP type triode Q2 and voltage stabilizing chip U71.The VREF foot output reference voltage of voltage stabilizing chip U71.VREF foot is connected by the positive input terminal (3) of the first resistance R256 and operational amplifier U66A, forms first line.One end ground connection of the second resistance R257, the other end is connected with the outfan 1 of operational amplifier U66A, forms the second circuit.
One end of first electric capacity C390 is connected on the second circuit, and the other end is connected in first line and its junction point is between the second resistance R257 and outfan 1.One end ground connection of the second electric capacity C389, the other end is connected in first line and its junction point is between the junction point and the second resistance R257 of the first electric capacity C390.
The negative input end 2 of operational amplifier U66A is connected by the colelctor electrode C of the 4th resistance R258 and audion Q2, forms tertiary circuit.One end ground connection of the 3rd resistance R259, the other end are connected on tertiary circuit and it connects node and is positioned between the 4th resistance R258 and negative input end (2).The Input voltage terminal 8 of operational amplifier U66A is connected with base stage B of audion Q2, and, Input voltage terminal 8 is connected by the emitter E of the 5th resistance R255 and audion Q2.
One end of 3rd electric capacity C351 is connected on the 5th resistance R255 and emitter E line, other end ground connection.One end of power supply output lead is connected on tertiary circuit and its junction point is between the 4th resistance R258 and colelctor electrode C.One end of 4th electric capacity C391 is connected to power on output lead, other end ground connection.It is that sensor assembly is powered that power supply output lead exports stable voltage.
Power supply circuits module uses constant voltage source to be powered body weight sensor, use the steady voltage source reference source as power supply circuits of 2.5V, utilize the empty short principle of positive-negative input end equivalence of operational amplifier, 2.5V reference voltage source is accessed in the bleeder circuit of R258, R259, Q2, through the ratio calculation of the 3 to 5 of R258 and R259, there is provided stable+4V voltage at outfan, can power with the high-precision power of support weight sensor.
The bioelectrical impedance analysis instrument that above-described embodiment provides, multifrequency mode is used to carry out biological impedance, the whole frequencies needed for the outer composition of human body cell and cellular content measurement can be covered, make measurement result more accurate, and have the elimination of electrode tip contact impedance, long cable impedance eliminates, measured body weight accuracy carries high, it is possible to obtain biological component data more accurately.
Method and system of the present utility model may be achieved in many ways.Such as, method and system of the present utility model can be realized by software, hardware, firmware or software, hardware, any combination of firmware.For the said sequence of step of method merely to illustrate, the step of method of the present utility model is not limited to order described in detail above, unless specifically stated otherwise.Additionally, in certain embodiments, this utility model also can be embodied as the program recorded in the recording medium, these programs include for realizing the machine readable instructions according to method of the present utility model.Thus, this utility model also covers the record medium stored for performing the program according to method of the present utility model.
Description of the present utility model is given for the sake of example and description, and is not exhaustively or this utility model to be limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present utility model and actual application are more preferably described, and makes those of ordinary skill in the art it will be appreciated that this utility model thus design are suitable to the various embodiments with various amendments of special-purpose.
Claims (15)
1. a bioelectrical impedance analysis instrument, it is characterised in that including:
Detecting electrode unit, control device and analytical equipment；
Described detecting electrode unit is connected with described control device, described control device and described point
Analysis apparatus connects；Described detecting electrode unit and human contact, be used for exporting measurement electric current and adopting
Collection detection signal, wherein, described detecting electrode unit can export the measurement electricity of multiple frequency
Stream；Described control device controls the frequency of described measurement electric current and receives described detection signal；Institute
State control device and described detection signal is sent to described analytical equipment.
2. bioelectrical impedance analysis instrument as claimed in claim 1, it is characterised in that:
Described control device includes: sinusoidal signal generator module；
Described sinusoidal signal generator module produces the sine wave being applied on described detecting electrode unit
The measurement electric current of shape, wherein, the frequency of described measurement electric current includes: 1kHz, 5kHz,
50kHz、250kHz、500kHz、1000kHz。
3. bioelectrical impedance analysis instrument as claimed in claim 1 or 2, it is characterised in that:
The quantity of described detecting electrode unit is 4；
Wherein, what 2 described detecting electrode unit were fixed on bioelectrical impedance analysis instrument holds on handle, and 2
Individual described detecting electrode unit is fixed on the pedal of bioelectrical impedance analysis instrument.
4. bioelectrical impedance analysis instrument as claimed in claim 3, it is characterised in that:
Described detecting electrode unit includes: the first detecting electrode, the second detecting electrode；
Described first detecting electrode and described second detecting electrode all with human contact, described first inspection
Surveying electrode and export described measurement electric current, described second detecting electrode gathers described detection signal.
5. bioelectrical impedance analysis instrument as claimed in claim 4, it is characterised in that also include:
Electrode drive circuit module；Described detecting electrode unit, described electrode drive circuit module and
Described control device is sequentially connected with.
6. bioelectrical impedance analysis instrument as claimed in claim 5, it is characterised in that:
The quantity of described electrode drive circuit module is 4；
Described electrode drive circuit module and described detecting electrode unit are that one_to_one corresponding is arranged.
7. bioelectrical impedance analysis instrument as claimed in claim 6, it is characterised in that:
Described electrode drive circuit module includes: the first signal isolating transformer, secondary signal are isolated
Transformator；
The primary coil of described first signal isolating transformer is connected with described first detecting electrode, institute
The secondary coil stating the first signal isolating transformer is connected with described control device；Described secondary signal
The primary coil of isolating transformer is connected with described second detecting electrode, and the isolation of described secondary signal becomes
The secondary coil of depressor is connected with described control device.
8. bioelectrical impedance analysis instrument as claimed in claim 6, it is characterised in that:
Described electrode drive circuit module includes: the first voltage follower, the second voltage follower；
The two ends of described first voltage follower fill with described first detecting electrode, described control respectively
Put connection；The two ends of described second voltage follower respectively with described second detecting electrode, described control
Device processed connects.
9. bioelectrical impedance analysis instrument as claimed in claim 6, it is characterised in that:
Described electrode drive circuit module includes: filtration module；Described filtration module is respectively with described
Second detecting electrode, described control device connect.
10. bioelectrical impedance analysis instrument as claimed in claim 3, it is characterised in that including:
Body weigher；Described body weigher is connected with described control device, will detection
Body weight information be sent to described control device.
11. bioelectrical impedance analysis instrument as claimed in claim 10, it is characterised in that:
Described body weigher includes: sensor assembly, power supply circuits module, signal amplify
Conditioning circuit module and analog-to-digital conversion module；Wherein, described sensor assembly, described signal amplify
Conditioning circuit module and described analog-to-digital conversion module are sequentially connected with；Described analog-to-digital conversion module is with described
Control device to connect.
12. bioelectrical impedance analysis instrument as claimed in claim 11, it is characterised in that:
Described power supply circuits module includes: operational amplifier (U66A), PNP type triode
And voltage stabilizing chip (U71) (Q2)；
The VREF foot output reference voltage of described voltage stabilizing chip (U71)；Described VREF foot leads to
The positive input terminal (3) crossing the first resistance (R256) and described operational amplifier (U66A) connects,
Form first line；One end ground connection of the second resistance (R257), the other end and described operation amplifier
The outfan (1) of device (U66A) connects, and forms the second circuit；First electric capacity (C390)
One end connects on the second line are each, and the other end is connected in described first line and it connects
Point is positioned between described second resistance (R257) and described outfan (1)；Second electric capacity
(C389) one end ground connection, the other end is connected in described first line and its junction point is positioned at
Between junction point and described second resistance (R257) of described first electric capacity (C390)；
The negative input end (2) of described operational amplifier (U66A) by the 4th resistance (R258) with
The colelctor electrode (C) of described audion (Q2) connects, and forms tertiary circuit；3rd resistance
(R259) one end ground connection, the other end are connected on described tertiary circuit and it connects node and is positioned at
Between described 4th resistance (R258) and described negative input end (2)；Described operational amplifier
(U66A) Input voltage terminal (8) is connected with the base stage (B) of described audion (Q2),
Further, described Input voltage terminal (8) is by the 5th resistance (R255) and described audion
(Q2) emitter stage (E) connects；One end of 3rd electric capacity (C351) is connected to the described 5th
On resistance (R255) and described emitter stage (E) line, other end ground connection；
One end of power supply output lead is connected on described tertiary circuit and its junction point is positioned at described the
Between four resistance (R258) and described colelctor electrode (C)；One end of 4th electric capacity (C391) is even
It is connected on described power supply output lead, other end ground connection.
13. bioelectrical impedance analysis instrument as claimed in claim 1, it is characterised in that including:
Power isolation module；Described control device and described analytical equipment are respectively by described power supply
Isolation module is connected with power supply.
14. bioelectrical impedance analysis instrument as claimed in claim 1, it is characterised in that including:
Printer, audio output device and touch display screen；
Described printer is connected with described analytical equipment, and described audio output device is respectively with described
Analytical equipment and described control device connect, described touch display screen respectively with described analytical equipment
Connect with described control device.
15. bioelectrical impedance analysis instrument as claimed in claim 1, it is characterised in that including:
Memory module and communication module；
Described memory module is connected with described analytical equipment；Described communication module respectively with described analysis
Device and described control device connect, and described communication module includes: Ethernet unit, 2G/3G
Radio-cell, GPRS unit, wifi unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620046880.0U CN205493825U (en) | 2016-01-19 | 2016-01-19 | Human body component analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620046880.0U CN205493825U (en) | 2016-01-19 | 2016-01-19 | Human body component analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205493825U true CN205493825U (en) | 2016-08-24 |
Family
ID=56722535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620046880.0U Active CN205493825U (en) | 2016-01-19 | 2016-01-19 | Human body component analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205493825U (en) |
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2016
- 2016-01-19 CN CN201620046880.0U patent/CN205493825U/en active Active
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240808 Address after: Room 405, 4th Floor, Building 1, No. 33 Tianhua Street, Daxing District, Beijing 102600 Patentee after: Beijing Huachen Ruiyue Biomedical Technology Co.,Ltd. Country or region after: China Address before: No. 33 Tianhua Street, Biomedical Industry Base, Daxing District, Beijing 102600 Patentee before: BEIJING SIHAI HUACHEN TECHNOLOGY CO.,LTD. Country or region before: China |