CN2534582Y - Body fat measuring apparatus - Google Patents

Abstract

The utility model discloses a fat measuring device, including two electrode couples. Two connection points of the two electrode couples are both current-path electrodes, namely, a measuring electrode and four loops are formed between electrodes. Through CPU trial calculation, the utility model can eliminate the impedance among fingers and avoid the impact of finger dampness, coarseness and contact area on body impedance, thus getting the right body impedance and further accurately measuring the fat value.

Description

The body fat measurement mechanism

The utility model relates to the measurement of fat, especially a kind of body fat measurement mechanism, four wherein set contacts are that current path forms electrode, it also is potential electrode, and utilize the compute mode of CPU inside, make it can accurately record body impedance, and then calculate and learn body fat, the humidity of order finger, roughness, the unlikely measurement result that influences of contact area size.

Body fat more (promptly fat) be though the person may not directly draw equal sign with disease, but learns from a lot of medical experiments is reported, the number of body fat definitely and healthy direct correlation, especially cardiovascular this respect arranged.Yet, can only learn generally whether people's body bone is too obese, and can't obtain the clearer and more definite numerical value of its body fat by the mode of eyes observation in early days; Recent years, promptly there is the dealer to develop and the device that to measure body fat numerical value, body fat measurement mechanism as No. the 366277th, Taiwan patent announcement, this body fat measurement mechanism mainly comprises two electrode pairs, when pushing two electrode pairs respectively with two hand fingers, in wherein the current path formation electrode 1a of an electrode pair and the current path formation electrode 2a of another electrode pair form a loop (seeing also shown in Figure 7) with health respectively, continue and utilize wherein that the potential electrode 1b of an electrode pair and the potential electrode 2b of another electrode pair carry out the measurement of voltage, with in above-mentioned loop, borrow its electric current to decay in time, and the variation of measuring voltage, and try to achieve impedance, again the resistance value of being tried to achieve is delivered to CPU to carry out the computing of arithmetic expression, learnt the body fat value with measurement.

Just, this measurement mode, still not satisfactory on practice, its main cause is that its measured value can be subjected to pointing humidity, roughness reaches and the influence of the long-pending size of each electrode contact surface, so its body fat value that records may produce very big discrepancy with the body fat value of reality.

Given this a situation, special the utility model, its fundamental purpose of proposing, provide a kind of body fat measurement mechanism, can avoid the influence of the problems such as size of humidity, roughness and contact area that body impedance pointed, and try to achieve correct body impedance, and then accurately predict body fat.

The technical solution of the utility model is: it has two electrode pairs, and the two point of two electrode pairs is all current path and forms electrode, also is potential electrode, and makes and form loop, four roads between each electrode, continues through the tentative calculation of CPU, the impedance that is produced between finger can be removed.

Body fat measurement mechanism of the present utility model can be avoided the influence of the problems such as size of humidity, roughness and contact area that body impedance pointed, and try to achieve correct body impedance, and then accurately predict body fat.

Below be accompanying drawing of the present utility model:

Fig. 1: the vertical view that is body fat measurement mechanism of the present utility model;

Fig. 2: the upward view that is body fat measurement mechanism of the present utility model;

Fig. 3: the formed loop of each contact synoptic diagram that is body fat measurement mechanism of the present utility model;

Fig. 4: the overall architecture calcspar that is body fat measurement mechanism of the present utility model;

Fig. 5: another embodiment that is body fat measurement mechanism of the present utility model;

Fig. 6: the another embodiment that is body fat measurement mechanism of the present utility model;

Fig. 7: the contact loop synoptic diagram that is the body fat measurement mechanism of prior art.

Below in conjunction with accompanying drawing the utility model is further described:

At first, see also Fig. 1,2, shown in 4, it lies in and sets up a display screen 11 (LCDdisplay) on the body 1, this display screen 11 links to each other with CPU, and set up power switch 12 respectively in two sides of display screen 11, last adjustment key 13, under adjust key 14 and set mode selecting key 15, in order to opening with power switch 12, close power supply, whether supply power is given CPU4 to control this power supply unit 5 (Power supply), and by the selection of setting mode selecting key 15, and go up and adjust key 13, adjust pushing of key 14 down, with height, the related data input of body weight etc., and in CPU4 is temporary in storer 6 (Memory); Continue and set up two groups of electrode pairs 2,3 in body 1 appropriate location, and the two electrode 2a, 2b, 3a, the 3b that make two electrode pairs 2,3 are, and current path forms electrode, it also is potential electrode, and when the user pushes electrode 2a, 2b, 3a, the 3b of two electrode pairs 2,3 respectively with second-hand thumb and other fingers (as forefinger), obtain an impedance (below see also Fig. 3) and CPU4 is informed in measured impedance in all measuring between finger and electrode 2a, 2b, 3a, 3b and on the finger, health, carry out tentative calculation with the operation program that makes CPU4 comply with its setting and move; Wherein, the thumb of hand is r with the little impedance that contacts between electrode 2a ₁, the impedance of thumb is R ₁, other fingers of hand are r with the little impedance that contacts between electrode 2b ₂, the impedance of other fingers is R ₂, the thumb of another hand is r with the little impedance that contacts between electrode 3a ₃, the thumb impedance is R ₃, be r with the little impedance of contacting of electrode 3b as for other fingers of another hand ₄, the impedance of other fingers is R ₄, the impedance of health is called R _BImpedance r continues ₁And impedance R ₁Compose in series impedance R _{On the L}, impedance r ₂And impedance R ₂String is set as a R _{Under the L}, impedance r ₃With impedance R ₃Be concatenated into an impedance R _{On the R}, and impedance r ₄With impedance R ₄Serial connection forms R _{Under the R}In view of the above, make the thumb handled between electrode 2a, electrode 2b and other fingers and form a loop, electrode 3a, electrode 3b also constitute a loop through thumb and other fingers of another hand, and other fingers of the thumb that electrode 2a and electrode 3b system handle, health, another hand are formed the loop, as between electrode 2b and electrode 3a, the thumb of other fingers of then handling, health, another hand forms a loop, and can obtain following formula by above-mentioned each loop: (1) r ₁+ R ₁+ r ₂+ R ₂(2) r ₃+ R ₃+ r ₄+ R ₄(3) r ₁+ R ₁+ R _B+ r ₄+ R ₄(4) r ₂+ R ₂+ R _B+ r ₃+ R ₃With it simplification: (1) R _{On the L}+ R _{Under the L}(2) R _{On the R}+ R _{Under the R}(3) R _{On the L}+ R _B+ R _{Under the R}(4) R _{Under the L}+ R _B+ R _{On the R}Again will $\frac{\left(3\right)+\left(4\right)-\left(1\right)-\left(2\right)}{2}$ Can obtain R _BValue:

It is that current path forms electrode, also is the means of potential electrode that the utility model utilizes each electrode contact, make between each electrode 2a, 2b, 3a, the 3b of two groups of electrode pairs 2,3 and all intersect to form the loop, and the impedance that its measurement is learnt is sent to CPU4 to carry out the calculating of above-mentioned arithmetic expression, and accurately obtain body impedance value, i.e. R _BValue goes out correct body fat with further tentative calculation.

Because the Design Mode of electrode of the present utility model and the tentative calculation of arithmetic expression thereof, the little impedance of contact that is produced in the time of can be with the finger contact electrode, and the impedance of finger deletion make the unlikely body impedance R that influences of impedance of the little impedance of contact, finger _BValue that is to say, even if everyone finger humidity difference, thickness difference, contact electrode area difference, and make the little impedance of contact, when finger impedance changes, when its through after internal arithmetic of CPU, just can be with it deletion, cut only surplus at last body impedance R _BValue, with when measuring body fat is worth, the humidity of not pointed, fineness degree, contact electrode area Different Effects, and make measured body impedance R _BIt is more accurate to be worth.

In addition, see also shown in Figure 5ly, it is another embodiment of the present utility model, and it also sets up two groups of electrode pairs 7,8 on body 1, and this two electrode pair 7,8 respectively has two electrode 7a, 7b, 8a, 8b, and between electrode 8a, electrode 8b an impedance R decided at the higher level but not officially announced _XMake electrode 8a form virtual connection point, when second-hand thumb and other fingers (as forefinger) are pushed electrode 7a, 7b, 8a, the 8b of two electrode pairs 7,8 respectively, just can and point between finger and electrode 7a, 7b, 8b, measure an impedance on the health, wherein, the contact impedance between the thumb of hand and electrode 7a is r ₅, the impedance on the thumb is R ₅, other fingers of hand are r with the little impedance that contacts between electrode 7b ₆, the impedance on other fingers is R ₆, other fingers of another hand are r with the little impedance that contacts between electrode 8b ₇, the impedance of other fingers is R ₇, the impedance of health is R _BImpedance r continues ₅And impedance R ₅Compose in series impedance R _{On the L}, impedance r ₆And impedance R ₆String is set as a R _{Under the L}, impedance r ₇With impedance R ₇Be concatenated into a R _{On the L}In view of the above, make the thumb handled between electrode 7a, electrode 7b and other fingers and form a loop, also constitute a loop between electrode 8a, electrode 8b through the thumb of another hand and other fingers, and other fingers of the thumb that electrode 7a and electrode 8b handle, health, another hand are formed the loop, as between electrode 7b and electrode 8a, other fingers of then handling, health, other fingers of another hand, thumb form a loop, and can obtain following formula by above-mentioned each loop:

(1)r ₅+R ₅+r ₂+R ₂

(2)r ₅+R ₅+R _B+r ₇+R ₇

(3)r ₆+R ₆+R _B+r ₇+R ₇+R _x

(4)R _x

With it simplification: (1) R _{On the L}+ R _{Under the L}(2) R _{On the L}+ R _B+ R _{Under the L}(3) R _{On the L}+ R _B+ R _{Under the L}+ R _x(4) R _xAgain will

Can obtain:

In CPU4, preset a set R again, _{Under the R}Value, and set above-mentioned arithmetic expression (R _B+ R _{Under the R}) deduct this predetermined R _{Under the R}Value obtains R _BValue.

In addition, body fat measurement mechanism of the present utility model, also can be made into form (as shown in Figure 6) as weighing scale, in also establish on its body 9 a big display screen 91, power switch 92, on adjust key 93, adjust key 94 and set mode selecting key 95 down, because the body fat measurement mechanism of this moment is designed to be as weighing scale, so when the user stands on the body 91, the weight data that can directly institute's scale be got transfers to the CPU4 place, then still need lean on upper and lower adjustment key 93,94 and set mode selecting key 95 settings, input as for other related datas that can't measure; In view of the above, the Ren Erdian that utilizes two soles forms the loop with after electrode 2a, 2b, [7a, 7b], 3a, 3b, [8a, 8b] contact, and measures and calculate body impedance R _BValue after the computing of CPU, just can obtain the body fat measured value again.

Claims (3)

1, a kind of body fat measurement mechanism, it is provided with in body can be for the enter key of input related data data, and there is demonstration to import the display screen of data and measurement result, and the data of input can be temporary in the storer, in addition, on body, still establish four only respectively for the thumb of hand and other fingers, the thumb of another hand and the electrode that other finger contacts are pushed, and will be sent to the CPU place, to carry out inner tentative calculation work by resulting numerical value behind second-hand thumb and other finger presses electrodes; It is characterized in that:

These four electrodes are that current path forms electrode, it also is potential electrode, therefore, when second-hand thumb and other finger presses on the electrode respectively, just can make four electrodes close and form loop, four roads, these loops comprise on the other hand thumb to the thumb of other fingers, another hand to other fingers, thumb on the other hand through health to other fingers of another hand, on the other hand other fingers through the thumb of health to another hand, comply with above-mentioned loop after the CPU tentative calculation continue the impedance at each position that will record, can obtain body impedance R accurately _BValue, and then calculate correct body fat.

2, body fat measurement mechanism as claimed in claim 1 is characterized in that: wherein, in wherein between two paired electrodes with an impedance R decided at the higher level but not officially announced _XBe connected with, making wherein, an electrode forms the virtual connection point, and make that each electrode is that current path forms electrode, it also is potential electrode, when second-hand thumb and other finger presses on the electrode respectively, just can make and form loop, four roads between four electrodes, these loops comprise on the other hand thumb to the thumb of other fingers, another hand to other fingers, thumb on the other hand through health to other fingers of another hand, on the other hand other fingers through the thumb of health to another hand, comply with above-mentioned loop after the CPU tentative calculation continue the impedance at each position that will record, can obtain body impedance R accurately _BValue, and then calculate correct body fat.

3, body fat measurement mechanism as claimed in claim 1 or 2 is characterized in that: wherein, this body fat measurement mechanism can be made into analog restatement form, for the body impedance R that measures the lower part of the body _BValue, and after the CPU computing, obtain body fat measured value accurately.

Images