JPS5931418A - Measuring device of remaining amount of fuel for vehicle - Google Patents

Abstract

PURPOSE:To measure the remaining amount of the fuel in a tank accurately and to detect mixing foreign matter by providing an electrode couple arranged in the fuel tank, electrostatic capacity detecting means, remaining fuel amount arithmetic means, and contents abnormality detecting means. CONSTITUTION:The electrode couple 11 are arranged as opposed to each other in the fuel in the fuel tank. A CR oscillator 26 is connected to the electrode couple 11 and its oscillation frequency is varied according to the electrostatic capacity between the electrode couple 11. Then, the mean period measurement part 281 of a signal processing circuit 28 counts a pulse sequence outputted from a frequency divider 27 by a specific number and finds a mean period on the basis of required time for the counting. Then, a mean processing part 282 averages mean period data supplied from the measurement part 281. Then, a foreign matter mixture discrimination part 283 compares said mean data with a specific threshold value to discriminate the mixture of foreign matter in the fuel tank, etc. Further, a remaining amount arithmetic part 284 performs specific remaining amount value arithmetic on the basis of the mean period data from the processing part 282.

Description

[Detailed description of the invention]

This excuse is to stop the remaining fuel 11f1 in the fuel tank.
can fill l1llll 1- and burn 1
It is possible to detect abnormalities in the contents such as water entering the tank, fuel change'ζ: I, Tatsumi type fuel being mixed in, or L defective fuel 11ζ supply, etc. Concerning meat fuel Zanshū measurement equipment. As is well known, when water gets into the fuel tank, the water ratio Φ is the ratio of fuel liquid to 41, and since sushi is usually crowded, water gradually accumulates at the bottom of the fuel tank, and eventually the inside of the tank. 16 or J: A river of poor combustion in the nozzle (16)
Become a prisoner. . -Zoko C゛, Yorito Kide had previously filed a patent application filed in 1985, 2727210.
We have proposed an electrostatic capacitance E11-type mixed water detection device that utilizes the 18-character force. "
As shown in Figure 1, there is a filter device ff/1 inserted into the fuel tank/1 and at the F end of the Iζ fuel output pipe system.
3 is fixed. At the bottom of this Noirta device 33, electrode plates /la and 'Ill are arranged oppositely at 41τ with a minute gap between them.
-1 has been completed. Water detector 5 +111 becomes electric 14 [j4 a, /
Lead wires 6a and 61+ come out from l+ -F' :P
L is taken out and through these lead wires 1) the signal from the acknowledgment detector 5 is as shown in FIG.
, - supplied. 0
What is the frequency variable element in the filter, for example, a tie with 4 resistors? IC (N E 55 total 5) etc. is constructed from a known CR light 1,1 circuit. Therefore, the pulse train 1 output from the zero scale oscillator 6 [・
'\/via the variable 1φ converter 7, corresponding to the frequency 1. = j
:N current current n causes 1φ, and this DC voltage is applied to comparator 8.
It is discriminated, and the alarm device 9 is driven by the fr-specific output of A.
: Composed of sea urchins. As shown in Figure 1, 7IT-1-10 is connected to a resistive value type 5I meter, which is not small in the figure, through a lever 11, and the output voltage of this potentiometer is Δ7.
/D change 1φ circuit is digitally changed to 1 (l!), and based on this digital 18 bow, the remaining fuel level is 1ift on the body side. If foreign matter such as water enters the C1 fuel tank 1 through the fuel extraction pipe 2, the water that has entered the interior will accumulate at the bottom of the filter device 3 because the specific gravity of water is higher than that of fuel i1. .Well, the relative dielectric constant εS of water is 404R culm I compared to the dielectric constant of fuel as in the previous IIB SilJ.
Since C1 is active, when this J condition occurs, the capacitance between the electrode plates 4a and 4b composing the water detector 5 °^'+
fill has increased significantly (no, along with this, c11 oscillation%:
6's oscillation frequency is significantly lower (J lower, simultaneous Cm I",
, 'The output voltage f1 of the V transformer 7 is significantly

[J increases. -e]ノ'z,l'',,' The output voltage of the V converter 7 is 'i!jlt+fir)
+! When this happens, the alarm 9 is activated by the discrimination output of the comparator 8, and the alarm 9 is activated to notify that water has entered the retank. J, Ui: 4M formation, 1, muddy water detection j!!j Q In the case of Q l~, electrode plates 4a and 4b are provided near the bottom of the tank facing downwardly, and the It is effective for detecting cheap foreign substances such as water, sea urchin, water, etc., based on the change in capacitance. I put diesel oil in the middle of the day.) Jf like lζ
7) Use of tanen 21 or five-in seven-kire 7:= j
There is a problem that if the specific gravity of the fuel is 6 or 1, lighter than the fuel P1, it cannot be detected effectively. Sen IJ, the applicant previously filed a patent application 1986-69f131+'
F j+, set aside 241 straight 2 in the fuel tank
A top plate of two electrodes is arranged in one direction, the capacitance around the electrode is changed to a frequency via a CR, and this frequency is multiplied by +, We have proposed a new 4I-electrostatic capacitance h1 type medium Ryogawa fuel residual IT measurement device to calculate the tank internal combustion 11 remaining t11 for 1, and this 'F% fl'l is J, 11 is 1
Since the remaining fuel amount 11C1 that has been controlled by 1 varies by -C depending on the dielectric and the table of ``H1 rule'' in the tank, it is possible to effectively detect the intrusion of objects 1 and t into the fuel tank. 11
The knowledge that it is 1 is jq. In addition, this capacitance type medium fuel residual + r + measurement side branch, J, -) "Cit7 +) 81 measurement 1po 1 is,
Since it corresponds to the sum of the dielectric constants of each layer of the tank contents, it is possible to effectively detect the problem regardless of the ratio of the cheap mixed water. Detection￥! By installing a dedicated detector for detecting foreign objects, as in the previous example, it became unnecessary, and the effectiveness of the device was reduced by 11 bits. This was done in view of the technical cost (because the purpose was to measure the amount of fuel remaining in the tank).
In addition to being able to accurately measure h1, it is also possible to actually detect the presence of 11'-substances in the fuel tank.
Kill J, sea urchin! ζ Medium-sized meat 11 Remains of old skewers 1
1. The object of the present invention is to accomplish the following: 1. To achieve the above object, 1. To achieve this, when there is M111 fuel remaining in the fuel tank, a pair of electrodes whose -C capacitance changes depending on the amount of fuel remaining is installed in the fuel tank. ;Totoshi, this? ``Detect capacitance vessels for one pole month as appropriate, and transfer the detected static capacitances to pi'.
i 11i' (based on J
, then 0(,-1 detected '/':, 6
'i' 1 ton of electric capacity M field (1iil if the contents of the fuel tank are also detected) S J, sea urchin 15:
(This is the 41st example of this invention.)
Details (3-Explain) based on Fig. 16. Figs.
FIG. 9 is a diagram showing an example of the notification, and FIG. Iil'g Processing Immediate Circuit The processing circuit is shown in blocks.
Figure 1 shows the signal processing circuit shown in Figure 10.
1 data ("IM completed!," indicates the completion of the bar 1ζ and r'tl in the case (jb 11th diagram, 12th
The figure is Figure 11 (this; i sentence tJ": ; fisi "11 ampicotag execution system l11/[-1 genome (showing 14 formations (j] []-] g17-1) ';J! In Figure 9, ?l:i pole 111 is in the fuel in the fuel tank (2nd floor i^sa IJ and opposite west 111).
Since the value is 0, ξJ1 is /i'+b, so it is
I/l+ is explained in Figure 4 ~ Negative) according to Figure 81. /As shown in Figures I, J, and Li, the outside A of the fuel tank 12 is made of A, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, The inside is inside the upper 2L 12a. The spawn 1 is directly connected to the rH and the side surface, and is divided into 1 and 13°74, which prevents the sudden movement of the fuel 15. Prevents the generation of sound +t, L
/'ir is configured like this. On the surface of the baffle plate 13.1/l, electrode plates 16, 17.18 are arranged facing each other with a certain gap between them, and these electrode plates 16, 17, 18 are arranged as shown in FIG.

[1] Baffle plate and IPPI3/tK -1, rivet l-2n ('Bara-nor plate 1
3. I am looking for a replacement for the 1/I. Baffle plate 13.14 (1) A predetermined gap is provided between the four edges of the fuel tank bottom wall (1) and the bottom wall of the fuel tank. Some bullets @: The lower end of the baffle plate 13.1/l (J is the upper sill 12.a) 18 joint part roars 7 lunge 21)
0 and 1 fixed number installation - 1 Rane, Makoichi: Rare's baffle (
The flange 21 of k13.14 has a relatively high quality.
j''4t 11, Li positioning river 1 blade notch 22 is provided. Other l), 'i' part 12a [, 1 This baffle plate 13.1/l is installed ) A protrusion 23 for positioning is provided in the notch 22 of the flange 21 on the side of the baffle plate 13.1/I according to the direction shown in FIG. 2 cars J”, sea urchin, electrode plate 1G
, 171, l >, S) C) 1 Hahnssolle l-
24, the lower end is connected to 1, and the lower end is connected to 1 of 12a through a straight line harness.
L box 2 fixed on the outside! The circuit board in j (predetermined 'rIi 14+ k Iu I; L
End 1'C! H continuation jS it, Y il',. Next (, -5th) Figure (J1! Rii (', CR oscillator 2
6, 13.1/I and the electrode plate 16 are attached to the baffle 41.
, 17, 1 F3 is connected to 474 pairs of electric currents ll1i, and these 1゛h (J knee to the capacitance e11 formed between the ship and 1) changes its oscillation frequency. For example, it can be constructed from a known CR oscillation circuit mainly based on a timer IC (Nr'555, etc.).Next. , the outline of the processing of sending a Jet to the immediate circuit 28 in the Jin 8 area is explained by referring to the function block in Fig. 10 (see Fig. 119).
Jru. First, the average frequency measurement section 281 counts the pulse train output from the frequency divider 27 to a certain number (7 pulses), and calculates the average frequency based on the required time. Next, ζ, the average processing unit 282 calculates 11j average period h
1 measuring section 281 to 11 (supplied 4 average cycle data to 1
11146 using the averaging processing method (Kotokudokoso = J-ru. Next, C1 Yimono mixed 1'11 Separate part 28.'11.r, b
' IT CL, the average processing unit 282 supplies the average processing unit 282? , , -, , 71 is compared with a predetermined threshold value to determine whether cheap substances have been mixed into the fuel tank. Fuel police? 'i
λ1 to 9130 and Han i! , output light(), to this J
1J is displayed on the fuel warning light 30, indicating that the vehicle is crowded. Next, the fortune-telling in the remaining performance frame section 28-41 is set to 1t11.'C', the average processing section 282
According to the average period of 1 supplied from
Perform the predetermined remainder #N 1ii'i calculation and burn 1 remainder t1
・1 幭(,-ta・1respond・”<n) Output the ship data, and this is output!,: The 31st (followed by the 7th digital indicator; /))/, i-remaining numerical data. F'll 'h Small device 29 does not display the fuel 1' + 1 remaining usage. The 11 body is shown in Fig. 11, and the microcombi 1-1.
, J, -), it is possible to execute the sysdef 1 program shown in Figure 12. [1] An input interface 311 for taking in the output of the frequency divider 27 and the input interface 311 for taking in the output of the frequency divider 27, and sending the output to the display 29 as required. , and an output interface I 312 for sending and covering the warning message to the combustion warning light 30, and an input interface 241 to the input interface Y 311.
'U Frequency divider 27 /) 11 Pulses are supplied to the Brilliant town counter (hereinafter referred to as the first counter) 313, which is controlled by the number 1 to town.
'+ lflfuγ1(and then [1 pulse is emitted (1
Sururi [1 Tsukushi Summer - Nerator 314 and "Tonkuji" The clock pulses output from Nereku 31/I are counted up and synced (
On the first step, this is referred to as the second counter) 315, and the system l[: 1 for storing 1 gram OM, r) - 1° storage area and R A M'! J to +7,
-) τ consists of lζ memo 9 part 316 and the following
Entry interface J chair 311. Output interface 7 - "chair 312, first horn" sink 313. ri 1] horn 7 ji [
Nerator 314. The second counter 311) is composed of a CPU 317 that centrally controls the second counter 311) and the second counter 316. Next, refer to No. [1-11・-1~] in Figure 12.
), the operation of this first embodiment device will be systematically explained.
1°, t(r, bu[] When the gram is s/l-1・1, suftubu(1) is executed, and the first count 313 is L;
l: 51jl The number of pulses necessary for measuring the gradient h1 is set to 1 core/, and 17 is added to the 2 number 1. 7 Here (11r of ``numerical value/''), consider the fluctuation range in which the output frequency of the frequency divider 27 changes while the fuel tank changes from an empty state to a full state. In this embodiment, while the fuel tank changes from an empty state to a state of 1 cycle, the output of the frequency generator 27 is approximately 1.
-1z・-○, 5117 fluctuates within n range J.
With the composition (\reC1゜follow・), provisional 1. m Z-1
0 and 1. , ? 'If the average circumference w1 of 10 pulses is measured by ()J, -'1, 10 seconds to 51 seconds will be lost. Next, when step (2) is executed, first light 1+/i 0 is set to the second horn '131h. The number 12 counter 31E3 is outputted from the 1st pulse generator 3314, and the 1st pulse is output from the 1st counter 31E3. Candy, like 112 says < 2
' 01,1 pulse required 11.1 time Chi9↓/:'
Ru1! B' (there is. Next, when (, Sunotsu 1 (3)) is fruited, (', l1
Ll 317 repeats q''1111 no counter 313 number 1 - f'', and until the it number Mi becomes 0, 1 mi 5 machine (c:). Desirably, divide the frequency output. 7
11vI was completed, the counter 31
The number of 3 (white is Odo' is the same as +1.!l (,:, the execution usage of step (3) is Yl-Sdo<Ksu, walc and sap (/I) is the actual i) When step (/l) is executed, (3
[, It, '1 point (-') second counter 315
The d1 value of is taken and stored in the 1:q register in the working register. Here, the second counter 31! j is the first counter, "l 13 G;
Since the number 2 (straight 7 set 1) was kicked 1- by O at the ll'i point, the i'11 point ``'' mentor 3
The it Yl value of 13 was O! i+:;i
The 111 value of the second non-counter 31 Fi is -11, which indicates the difference between the L frequency division pulse/0^1 minute (!), which is the average of the frequency division pulse/1^1 minute. Kaimei (4
2 corresponds to 1 (1 white and 1). Then, when Sfutsubu (!3) is executed, sl is equalized and the contents of register are changed to the predetermined base +1!-hl'i'
Is it less than or equal to M +, i hs I;r, It-
5C, i7i 1+l/l sink contents! +51
Always is determined. Contents in here (, fuel tank!) b''-1 As usual (in the fuel tank 1 tank (・If the two are 11 shi large, 11- in Yoshiaki), light rain 4-1; r no 12. In the fuel tank, if the solin is oxidized and decomposed (if the chlorine increases), then in the fuel tank there will be 1-) and J' 1 - 1) If 17 people are involved, then 1
1-water (1 series λ-ha゛, 1-water, 1-water, 1-water)
In addition, the dielectric constant ε of gasoline is 11141, which is 2. 1, methanol 4.13G, :l',
'Tanol is 25° water +; extremely high 180 culm.
l'l 'a';I'%! l. Well, the contents of the average Kaimei register I vary by +141 within a predetermined range from 9 to 7). If J, Tsu-C tank internal combustion] moves by 1:6, the average Kawaaki)-ta value will be
101) 6 culm degree variable ribs ZI rusinoto and 1 each. LY--) (', LL)l'IIl'1M+
As for the 11 white, fill the tank full with Karin and enter the lζ state σ) j1717 heavy l-ta about 151
It is set to 8 culms and 1q. This unity, the aforementioned J, and the inside δ in the eel fuel tank ()
If the object 5"-1 always becomes '1, the execution result of step (5) is NO. Then, τ step (9) is executed i-7 (, fuel 21f'+"r ff :10. There are 13 in the tank (ii/1.
The fact that j 7i4 is '1' is shown in Table 1. 41.1.73 = I L, τ, C in the fuel tank
If the content 51 described above is not the same as 71, the execution result of step (5) is
Subsequently, step (6) is executed 4. In step (6), a new 1111
zji A average value is as follows: 1. −, J, is obtained. l-[(Δ-1)'△]・l' = +(1,,・'△
)・]- Microphone for recording 1 set of 4 pieces [l-1
Mbikota's! Detailed explanation of 111 works.
niR [! 1 (i content GC? IT, Wl 1
! lrImi('l' If lll'l (A 1
) i'A Put the lever 41 into the register for calculation c71.
Multiply by lir + 1, = '△ (Similarly, R river l/
Sistani-11, 'i record (!Q, i'5 'L!,
'、Next A"C famous performance CI l/ The content stored in the sister is 1111 Di (1,
1),' A I ・l--1(1,/△)・-1-
How do you store this weight in the register 1'1? Here, under the 11th grade ship register "l: 2=I
The first width of the first width (Δ 1), ·'Δ and the first width of the first width are 1. Pair 'I Le No. 211 comic f
j IJ 1lri 1,' A toshi'C1'f,
11 multiple functions of 2 h each! If river J, then = 1 nbi J-ta in J: In the binary evolution deduction, 2 11 overlaps ii
1iIG, L A, 1 Nojista's trespassing line/There is a special edition B to collect. +1: /-11) octopus for 1 person (yodo・i)
The fluctuation of the Φ average ship is suppressed eastward 2 ＼ 7 Next, C, when step (7) is executed, the 1111 weight average value register is Then, 11t is added to the contents of T', and the next generation is phosphor/no internal combustion engine.
i() is in love with l+lt register Q 1゜Q= [(1'-II)/l'3] xN here(,13
) llI'1 ふ 1'l fai ct when the tank is empty
-,,a; The average circumference is set to 7 digits, and N (f) 1ifi corresponds to the capacity of the fuel tank. Next, when step (8) is completed, the contents of the remaining month value register Q are supplied to the digital display 30 via the output terminal 7-choice 312, and the display 30I is thereby supplied with the remaining fuel value register Q. The hanging value will be digitally displayed, for example, 11A, 1''/.Thus, according to this first embodiment device +3=, if an abnormality occurs in the contents in the soot layer tank, the warning light will be turned on. 1! Immediately notify the driver of this (・ki,
:LlContents-'1:Always) 1C in 1 condition
et, c7 average circle j! I] Used in the combustion slope residual R value operation B'7 after applying the summation and averaging of 7'-1 (I put it in, and even though the fuel in the tank fluctuated, it was still true that the fuel in the tank was unstable.
t l;j There is also an effect song that does not change. Next, FIG.
2 Practical Examples and Colors) [I Marri 1] 1-pitcher's system, bu [1 grano, small 1-) 11-chi 17
= There is C′ to l. In addition, before, i+! The same as the first embodiment. For the constituent parts, the same numbers are used.
1゜The feature of this second embodiment device 7'7 is that it measures whether the contents of the fuel tank are present or not.
) If the discrimination is reversed based on II Kenshu Akira-j゛-ta, is it the base of Zono? I got 11 rides, and last time I went to 111.
This is due to the fact that ``1'' was used, which is the addition of a predetermined textbook to the equal-circumference light day. The average circumference of
r+u Ct; ifl Judgment based on relative standards 1) ゛ (There is.) 3E・J When (10) is executed sequentially, the 1Jth register (hereinafter referred to as the average period register) stores the t17 average period clear data of the renewal.
−[11 stores the average i-data, and 1.1+
Contents 11 that have been stored in the average cycle register Ta so far this time, a register for storing the previous average cycle data (hereinafter referred to as the previous average cycle register)
Φm is sent to Ja-. Next, when (11) is executed, the tank is calculated by the following formula based on the contents of the current average river register Ta and the contents of the previous average circle + 11 register l''a-. It is determined whether the contents are abnormal.■'a≦Ha'l-1ti42 Here, the value of C・, the value of M/ is calculated as follows: The contents of the current average period register l-a and the previous average period register l”a
- The content of the difference is set to 6 slightly more arbitrarily. Therefore, while refueling with normal gasoline at a gas station, etc. aI? (incorrect in -) and high dielectric constant)
) Rule 1 - Rule etc./] If So 1 is i'l, -['a >I'a -+ fvl 2 This article A'1
is established, this utilization step r2/(9) is executed, η, fuel alarm? -1130, the contents of the tank (...) are 5+, and the alarm is always notified.
Always go to [Fuel] If J So 1 is exhausted, then Su 7 Tsu 1 (1
Is 2) true? −1, the J3 addition vehicle average processing is performed as usual, and then (゛゛j・7(7), (8)) is executed, and the addition!4′i average (based on required) ζ combustion +
1 residue (1r1 is displayed on the remaining 1ii1 person indicator)
: Jj in Jj and bad fuel or) full = 1-ru etc.
, if a cheap item with a high dielectric constant is 1C, the fuel tank will be full / 1' before (3 houses / 11 periods / -,
It was discovered that it was possible to reliably prevent the contamination of cheap products.
Residual^1111 measuring device, %J7 Another example (hereinafter referred to as the third embodiment) of the microcombinator system 7 mg (1 gun 11; 1 (rif [1-1- 11-Toguru. 1h'1 character LL of this third embodiment, J of the second embodiment
,') 1. 2) 1j9j at f sorin stands etc.
j) ”(: Bad fuel
Gun 1 is broken, and this is phase 11'l 1'2 shi'
(Judgment based on the detected weighted average value;, ;,-C
It is J, Unishita-t).・J-iCwaI3, when sl-゛tsuzo (1) to (/l) is executed, 17 yen yen (corresponding to J fuel remaining) is set in vI7 yen yen register T. data is stored. Next, when sumitub (13) is executed, the contents of the register for storing the latest weighted average value (hereinafter referred to as the weighted average value register) [1], 7I-
, and the contents of the average period register (2) stored in i5J, a new city average period is determined by the following formula. F(A-1)/A]・Tb+(1,,/A)・T, and this newly sought item II [average 11r, I was confused, this time, Canada, China, and Japan ship register 1 river) The contents of are updated, and at the same time, the register for storing the previous 11th I"iyu 11uniform 11r1 (hereinafter, this is added previously) ) -1-II -IL l
;L, 'E t'L MacC this time +111 iF vP uniform 11r Rujista 11) memorized (ki I'shi (i! ζ inside'δ
is sent 'l'/l 5° then C, Sujtsu 7 (14)
When hN is executed, the contents of the current weighted average value register Tb and the contents of the previous weighted average 1ft register T11' are used to determine whether there is an abnormality in the tank contents. It will be done. . 1 River] ≦llll -+M 3 Here, enter the numerical value at the 11r mouth of 4J, normal <'r ノJ Sorin is stagnant in the brick tank. April Jru 11
) and TI)-, one person was killed every six people. Therefore, the normal fuel at the gas station /) Soo 1
When you are in a situation where you are in a state of confusion, always [1) 2;; -) If allure or stage fuel, etc. is poured, "b. I'll-1M3's plan 1'1 is successful, and step (1/I) fruit tJ
Utilization is NO, I:, becomes. Here -C, this is the phase between the 13th embodiment and the second embodiment) ηc,'II+:%+'I'll'r% Ni Kelj,! 1% Vessel and 1. / T 1'+if times (1) addition! [1 + 1 勺 (target [1)' is 11t] is zuiCwa + 3 This means that when fuel is poured into the fuel tank, the fuel in the tank is normally 11
1 FJI h Sfutubu (13
), the weighted averaging process η and J, -) suppresses the 1'1' variation in fuel fluctuation in the tank, and increases the detection rate by 1'1'.
It is making the 8-Yori 1-1- the 1- direction. Therefore, if the determination is No in the swift button (14), Stella 1 (9) is executed, a warning light is turned on, and an abnormality in the contents in the tank is notified.
If the execution result of step 4) is Y I-E S, sub-items (7) and (8) are executed normally and the remaining item indicator 2 is displayed.
In 9, the fuel remaining in the tank ^1 is always displayed (- and I- < ν1゜Next, Fig. 15 shows the fuel remaining in the vehicle related to the evening light b)! IIT side device Other implementation 1
+lI (hereinafter referred to as the 4th execution 1st column)'s shift 111'II shifter's sizmbu [1 gram is shown 4) [1-dit·-1-(· exists). 41, go to the first part; the same as the third embodiment;
The 121 mold of this fourth embodiment is 1!1, and the average Zhou Ming deck which is sequentially 1! Compare with 1, 1. to determine if there is an abnormality in the contents of the fuel tank.
, ／、：especially le)ru. When (4) is executed, the average Kaimei register [is the average yen corresponding to the remaining fuel] 11] ノ"-Yu is executed. 811 is remembered. Next, when Sfutub (1!'i) is written as 1'i2, it is successively 1!1, - the contents under the average period register, and the contents of the average period register/11'.
(, the following formula is used to determine the contents inside the tank (!' i.
4 C1, Il-Constant! 'C fuel fil is fuel tank IJ?
1 or h
The contents of 'h and Kato r'111 ship register]' are set to 2. 1; r while refueling at a gas station, etc.
(-r l:H)iil or al-d]-ru etc. 7J
If the law fails, the fruit fr of (1!i)
Conjugation (, L direct J) is NO and IC, followed by C short (
9) is executed and an abnormality is reported in the tank as described above. If normal fuel is poured into this, The execution result of Stella/(1・!'5) is YES, and then Sfutub (6), (7), and (8) are executed in sequence.
The fuel remaining in the tank may not be displayed normally on the remaining fuel indicator. Here, the effect of the fourth embodiment on the Song Dynasty is as follows: 1. In other words, in the device of the third embodiment, the In particular, I have determined that there is an abnormality in the contents of the tank, but with this method, there is a risk that the master craftsman who makes the determination will not be able to do so. To Jlt, "do=fbe(!()'s (9 b1 judgment target using 1 weighted weighted consideration) C can be obtained now! Average yen 111 '1 data, 21, and the response t/l is 1-sali 7-.
. Next, Fig. 16 shows this invention with 4 threads per thread and 1 yen for light rain.
Other real IA of the remaining 1d measurement iPV +91 (hereinafter referred to as the fifth embodiment) my/,y l: ] 1
Indicates the system program 1-1 of the program 1-1. Norm: +-
f-17-l・c′・a certain 1゜′<+: In the first
Components that are the same as those in the FA 'I embodiment are given the same reference numerals and explanations will be omitted. Characteristics of this fifth embodiment Koen [;1, Previous i [i [i] To finally compare the content abnormality in the tank (+1 and 1, 2 fuel remaining 41M1! t1 and 1), 1 , -) C was determined. 1j rope), suftubu (1) ) (2) n (3
) → (/l) ÷ (6) -' (When 16> is executed sequentially, the latest fuel i11 remaining quantity is allocated ↑0 register (hereinafter, this is referred to as the current remaining quantity value register) Q a tJ is calculated by adding Φ averaging processing (-) to NIZ average period f'-ta, and calculating M based on the data after this 1111 small 51' averaging 9! processing.
), the requested fuel balance is stored. Same 11
．． %, -E
11′l, i(h j′Jsa1Jda register (hereinafter,
This is transferred to the previous server (referred to as a distribution register) Qa-. Next, when step (17) is executed, the contents of the register Qa and the previous fuel out!
Based on i41/+the contents of register Qa-, it is determined whether the contents of the retank are abnormal according to the following formula. Qa≦Oa'IM5 Here, a few (one night at M5 is before) a small IkoJ, U (this gas station ↑ 9 C1 evening (burned fuel in one unk) 1-Gree In the state where A's fuel is normal, A's fuel is normal, A's l-3 () is placed on the loading platform, and the contents of this pinch hitter 1 field register and the previous time's 511 value register are; Therefore, if erroneous fuel or alniol is poured at a gas station, etc., the execution of step (17) is immediately followed by NO and <', followed by step (1). f)) is executed before C1)!1;do lit 14;
I: The contents of Tatsumi are human and Iki 1! Kotodo 4i: A). On the other hand, C, 21's failure +1 is i], and step (17) execution chapter 1! ) 'r-5''> and one A + Ljc and Sj Tsu J (8) executes (cut,
j1 always 1 fuel + 1 remaining 51 value display or 1
゜Here 1 h of each example; 1 Ming C (,) obviously 1l-J, urchin, lql 4q ;j, 1 i1f1J fuel + 1 remaining 1r'! ffl'itl'l N Neck G, L
,! 41'l 1f' outside the C fuel, arranged in a direction in the tank
Electrode λ whose capacitance ﾛ1 value changes depending on +
1 and the capacitance Lβ data corresponding to the capacitance 1ffi between the mold 14i X4.
Based on the capacitance -) - the fuel in the tank
1 Remaining fuel storage means 1 Fl-J The capacitance h・1) Detects the movement of the contents of the fuel tank. 11I^ with 1 stage of normal detection
What I got (・there are 7) 11), fuel remaining in the tank 111
11'l The contents of the tank! In addition to being able to detect the same 11 blue +: 4 times as usual, it seems that the cause of the constant movement in the tank is due to the contamination of foreign matter. Is it possible to effectively detect this regardless of the situation?
r'l YQ Ri f+l'I(1) It is no longer necessary to perform separate measurements for rif measurements, and it is now possible to perform a separate measurement for each unit of the device. 1 , Figure+n+0) nil llj 1. '; 1
ij2 Ming-'11 figure is Honkawa 1F/ci people first 1; 2
Plan 1) Partially cutaway side view of the fuel discrimination tank of water detection tank 11" and "1" (showing 14 configuration), Figure 12 is 4<
A cross-sectional view of the configuration of the detector, Figure 3 shows the mixed water detection wave i,
Figure 179, 9'
1/11 sol l; L 7ti J4i ri・1 no ft
Figure 5 shows the condition of part of the J fuel oil tank (1) with a notch missing (1).
OIJ leV l -VI lit If/i then1
'21, No. 7 Fig. 1 Plan view of 44i-1,
Fig. 8 is a diagram showing the same configuration, and Fig. 1) is a diagram showing the basic electrical ◇ ((14 components) of the 65-bar measurement equipment for vehicle fuel according to the present invention. , Figure 10 is shown in Figure 9]
The r1 axis of the signal processing circuit shown in Figure 11 shows the function block [1 block diagram; Figure, 1st
Figure 2 shows the system program of the micro-1 computer of the first embodiment. ri11
4 is a flowchart of the device of the third embodiment, FIG. 15 is a flow chart of the device of the fourth embodiment, and FIG. 16 is a flowchart of the device of the fifth embodiment. -1 to C-1,
11...711i Pole pair 26... Rg: Oscillator 27... Frequency divider 28... (rli j'U processing circuit 29...
...Remaining 2j''1 Person indicator 30...Fuel y' color light 281...H1i equal circumference light measuring section?82...Averaging processing section 283...Foreign matter detection section 2 B 4 ”・YQ Ili'l aid 97 part 3
31...Micro-1 pump 311...
Input interface 312...Output interface 313...911 Counter 31'l...
...Second counter 310...Meeting section 317...CI') 11 1, "1st edition applicant Nishoku Jikoku Chuo Co., Ltd. 1 2" Fig. 5 5 Fig. 6 Fig. 7 Figure 8 Figure 12 Figure 13 Figure 14 Figure 15

Claims (1)

[Claims] (1) A pair of electrodes that are oriented oppositely in a fuel tank and whose capacitance PI'1llll'l changes depending on the fuel remaining on the ship;
Said Den 11! A capacitance detection means that detects the capacitance data corresponding to the capacitance (1) between the i pairs; calculates the remaining fuel value in the tank based on the capacitance 641j-ta. and a means for determining the remaining fuel amount;
' - 1 - 1 - 1 - 4 - 1 - 4 - 1 - 4 - 1 - 4 - 1 - 4 - 1 - 4 - 1 - 4 - 1 - 4 - 1 - 1 - 1 - 1 - 1 - 1 - 4 - 1 - 4 - 1 - 1 - 1 - 4 - 1 - 4 A
tF? .