CN104776881A - Liquid level density sensor provided with magnetic floating balls - Google Patents

Liquid level density sensor provided with magnetic floating balls Download PDF

Info

Publication number
CN104776881A
CN104776881A CN 201410016359 CN201410016359A CN104776881A CN 104776881 A CN104776881 A CN 104776881A CN 201410016359 CN201410016359 CN 201410016359 CN 201410016359 A CN201410016359 A CN 201410016359A CN 104776881 A CN104776881 A CN 104776881A
Authority
CN
Grant status
Application
Patent type
Prior art keywords
signal
liquid
density
float
circuit
Prior art date
Application number
CN 201410016359
Other languages
Chinese (zh)
Inventor
陈佳亿
罗运龙
陈威宇
郑兆凯
Original Assignee
桓达科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Abstract

The invention discloses a liquid level density sensor provided with magnetic floating balls. An actuation rod is sleeved with a first floating ball and a second floating ball different in specific gravity; the second floating ball is coated with a housing of the first floating ball in a coverage manner; a through hole is formed in the housing of the first floating ball; when the actuation rod extends into a container, liquid in the container flows into the housing of the first floating ball through the through hole, so that both the first floating ball and the second floating ball can float on the surface of the liquid in the container; the distances from two magnetic elements of the first and second floating balls to the liquid surface are different, so that the distance change forms a linear relation with the measured liquid density only; the sensor is arranged on the actuation rod, so that the accuracy of the liquid measured at present can be quickly and correctly calculated according to the linear relation when the liquid density is calculated by a pulse signal receiving and transmitting time difference.

Description

具磁性浮球的液位密度感测器 Magnetic float level with the density sensor

技术领域 FIELD

[0001] 本发明是有关一种液位密度感测器,尤指一种具磁性浮球的液位密度感测器。 [0001] The present invention relates to a liquid level sensor density, especially the density level sensor of one kind having a magnetic float.

背景技术 Background technique

[0002] 一般在高压液体控制设备或储存槽内往往会以具磁性浮球的液位密度感测器进行液体液位或密度的量测,请参阅图8所示,为现有具磁性浮球的液位密度感测器,其包含: [0002] Usually in the high-pressure liquid storage tank control device or level tends to float density sensor is performed with a magnetic liquid level or density measurement, refer to FIG. 8, with a conventional magnetic floating level density sensor ball, comprising:

[0003] 一作动杆60,其包含一中空管体及一感应线61 ;其中该感应线61穿设并固定于该中空管体内; [0003] an actuating lever 60, which comprises a hollow tube 61 and a sensing line; wherein the sensing line 61 passes through and is fixed to the hollow tube body;

[0004] 一感测装置50,设置于该作动杆60的中空管体的一端,并包含有一具运算功能的控制器51,该控制器与该感应线61电连接; [0004] a sensing device 50, disposed in the actuator rod end of the hollow tube 60, and the controller 51 includes an arithmetic function, the controller is electrically connected to the sensing line 61;

[0005] 一第一浮球70,包含有一外壳71、一浮体72、一第一磁性元件73及一第二磁性元件74 ;其中该外壳71具有一穿孔711供该该第一浮球70套设于该作动杆60上并可沿该作动杆60轴向移动;该浮体72设置于该外壳71接近该感测器50 —端,使该第一浮球70接近该感测器50 —端浮于液面;该第一磁性元件73设置于该外壳71内邻近该浮体72 —端;该第二磁性元件74设置于该外壳71内远离该浮体72 —端;及 [0005] a first float 70, includes a housing 71, 72, a first magnetic element and a second magnetic element 73 a float 74; wherein the housing 71 has a through hole 711 for the float of the first sleeve 70 provided on the actuating rod 60 and the actuating rod 60 along the axial direction of movement; the floating body 72 disposed in the housing 71 in proximity to the sensor 50 - terminal, so that the first float 70 approaches the sensor 50 - end of the float to the liquid surface; the first magnetic member 73 disposed within the housing 71 adjacent to the float 72 - end; the second magnetic member 74 disposed within the housing 71 remote from the float 72 - end; and

[0006] —第二浮球80,设置于该第一浮球70的外壳71内并具有一通孔81及一第三磁性元件82 ;该通孔81供该第二浮球80套设于该作动杆60上,且位于该第一浮球70的第一磁性元件73及第二磁性元件74之间并可沿该作动杆60轴向移动;又,该第三磁性元件82的两极分别朝向该第一磁性元件73及第二磁性元件74,且该第三磁性元件82的两极分别与该第一磁性元件73及第二磁性元件74互斥以防止该第二浮球80于移动中会因磁力而吸附于该第一浮球70具有磁性元件的一端影响测量结果。 [0006] - a second float 80 disposed within the housing 71 with a first float 70 and a third magnetic member 81 and a through hole 82; the second through-hole 81 for the float 80 provided in the sleeve actuating rod 60, and a first magnetic element located in the first direction between the float 70 and 73 and the second magnetic element 74 of the actuator rod 60 moves axially; and, the third magnetic element 82 of the bipolar respectively toward the first magnetic element 73 and the second magnetic element 74, and the third magnetic element 82, respectively, the poles of the first magnetic element 73 and the second magnetic member 74 to prevent the second mutex float 80 to move It will be adsorbed by the magnetic force of the first float having a magnetic element 70 at one end affect the measurement results.

[0007] 现有具磁性浮球的液位密度感测器在使用时,将该作动杆60远离该感测器50的一端插入待测液体中,并使该感测器50露出液面,此时,该第一浮球70接近该感测器50 —端会因该浮体72而浮在该待测液体液面上,而该第一浮球70的第一磁性元件73因邻近该浮体72而与液面接近,因此当该感测器50的控制器51则通过该感应线61输出一脉冲信号,该脉冲信号经过该第一磁性元件73的位置时,会受到磁场影响输出一磁致效应信号,该控制器则可依据发出脉冲信号至接收到该磁致效应信号的时间推算出该第一磁性元件73于该作动杆60上的位置,并进一步计算得出该待测液体高度;又,因该第一浮球70的外壳71上的穿孔711,该待测液体会流入该外壳71中,该第二浮球80则会因浮力、重力以及该第三磁性元件82与该第一浮球70的第一磁性元件73及第二磁性元件74的磁力之间 [0007] Level with the density of conventional magnetic float sensor, in use, the end of the actuator rod 60 away from the sensor 50 is inserted in the test liquid, and the liquid level sensor 50 is exposed in this case, the first float 70 approaches the sensor 50-- will be a first end of the first magnetic element 73 of the float 70 adjacent that of the float 72 floats on the liquid level to be measured, because with the floating body 72 near the liquid surface, so that when the sensor outputs a pulse signal controller 50 of the sensing lines 51 through 61, the pulse signal passes through the position of the first magnetic element 73, the magnetic field affects the output will be a magnetoresistive effect signal, the controller may be sent to the receiving pulse signal according to the time of the magnetoresistive effect calculate the position of the signal of the first magnetic element 73 on the actuator rod 60, and further the calculated test liquid height; and, because of the perforations 711 on the housing 71 of the first float 70, the liquid sample flows into the housing 71, the second float 80 will be due to buoyancy, gravity and the third magnetic element 82 the magnetic force between the first magnetic element 73 of the first float 70 and the second magnetic element 74 and 力平衡,而位在该第一磁性元件73及第二磁性元件74之间,该控制器51通过上述手段以感应线61分别取得该第一磁性元件73、第二磁性元件74及第三磁性元件82于该作动杆60上的位置,并推算出该第三磁性元件82与该第一磁性元件73及第二磁性元件74之间的距离,该控制器51依据该距离计算出该待测液体的密度。 Force balance, and located between the first magnetic element 73 and the second magnetic element 74, the controller 51 obtains the first magnetic element 73 by the sensing line 61 are the means described above, the second magnetic element 74 and third magnetic member 82 in position on the actuator rod 60, and to calculate the third magnetic element 82 and the distance between the first magnetic element 74 and the second magnetic element 73, the controller 51 is calculated according to the distance to be the the measured density of the liquid.

[0008] 请再配合参阅图9,其纵轴为待测液体的密度(单位为千克/立方厘米),其横轴为该第三磁性元件82与该第一磁性元件73及第二磁性元件74之间的距离(单位为英寸),通过观察可得知当待测液体密度提高时,该第二浮球80会因为浮力提高而越接近该第一浮球70具有浮体72 —端,同时该第二浮球80的第三磁性元件82也会越接近该第一浮球70的第一磁性元件73而远离第二磁性元件74,当待测液体密度降低时则相反;该感测器50的控制器51则依据图上二条特性曲线来计算待测液体的密度,但是在实际操作因该第三磁性元件82与该第一磁性元件73及该第二磁性元件74分别互斥关系而导致该二条特性曲线为为非线性曲线,除非以复杂计算式才能计算出精准待测液体密度,否则容易出现误差而使计算结果不精确。 [0008] Please refer to FIG. 9 with their longitudinal axis is the density of liquid to be measured (in kg / cm), for the horizontal axis 82 and the third magnetic element and the second magnetic member 73 of the first magnetic element when (in inches) by observing that when the test fluid density can be improved, since the second float 80 will be closer to the increased buoyancy of the distance between the first float 74 floating body 70 having a 72 - end, while the second float 80 of the third magnetic element 82 will approach the first magnetic element 70 of the first float 73 away from the second magnetic element 74, when lowering the density of the liquid to be measured is the opposite; the sensor the controller 5150 is based on two characteristic curves in FIG calculating the density of the liquid to be measured, but in practice because of the third magnetic element 82 and the first magnetic element 73 and the second magnetic element 74 are mutually exclusive relationship this leads to two characteristic curve is non-linear curve, measured accurately unless the calculated density of the liquid formula to calculate the complex, prone to errors or inaccurate results of the calculation.

发明内容 SUMMARY

[0009] 有鉴于现有具磁性浮球的液位密度感测器的缺陷,故本发明主要目的是提供一种可简单计算液体密度且相容于多相介面液体的具磁性浮球的液位密度感测器。 [0009] In view of the level sensor prior density with the magnetic float defects, it is the main object of the present invention is to provide a simple calculation on the liquid density and compatible with magnetic float liquid multiphase liquid interface bit density sensor.

[0010] 为达到前述目的本发明所使用的主要技术手是令具磁性浮球的液位密度感测器包含有: [0010] In order to achieve the object of the main technical means used in the present invention is to make the density of the liquid level float having a magnetic sensor comprising:

[0011] 一作动杆,其包含一中空管体及一感应线;其中该感应线穿设并固定于该中空管体内; [0011] an actuating lever, which comprises a hollow tube and a sensing line; wherein the induction line passes through and is fixed to the hollow tube body;

[0012] 一感测器,设置于该作动杆的中空管体的一端,并包含有一具运算功能的控制电路,该控制电路与该感应线电连接; [0012] a sensor disposed at an end of the hollow tube body as a lever, and the control circuit includes a calculation function, the control circuit is electrically connected to the sensing line;

[0013] 至少一第一浮球,其包含有: [0013] at least a first float, which comprises:

[0014] 一外壳,其具有二相对的第一穿孔及至少一通孔;该相对的二第一穿孔供该作动杆插置于其中,使该外壳套设于该作动杆上并可沿该作动杆轴向移动;该通孔贯穿形成于该外壳上,供使待测液体流入该外壳; [0014] a housing having two opposite first through hole and at least one through hole; the first two opposite perforations for the interposed wherein actuation rod so that the outer shell disposed along the actuating rod and the axial movement of the actuator rod; through the through hole formed on the housing for the liquid to be measured flows into the housing;

[0015] —第一磁性兀件;固定于该外壳内与该作动杆垂直且远离该感测器的一面; [0015] - a first magnetic member Wu; fixed to the actuation rod is perpendicular to and away from the sensor within the housing side;

[0016] 一第二浮球;设置于该外壳内并具有二相对的第二穿孔及一第二磁性元件;二相对的第二穿孔供该作动杆插置于其中,使该第二浮球套设于该作动杆上并可沿该作动杆轴向移动;该第二磁性兀件固定于该第二浮球远离该第一浮球的第一磁性兀件一端;又,该第二浮球的比重小于该第一浮球;及 [0016] a second float; disposed within the housing and having two opposite second perforation and a second magnetic element; a second two opposite perforations for the interposed wherein actuation rod, so that the second floating ball sleeve disposed along the actuating rod and the actuating rod moves axially; Wu the second magnetic member fixed to the second float float away from the first end of the first magnetic member Wu; and, the the second specific gravity is smaller than the first float float; and

[0017] 其中该第一磁性元件及第二磁性元件之间的距离差与该待测液体的密度呈直线线性关系,故该控制电路计算出该第一浮球的第一磁性元件对应该感应线的位置,与对应该第一浮球的第二浮球的第二磁性元件对应该感应线的位置后,即以第一磁性元件及第二磁性元件之间的距离差,对照该直线线性关系以计算出该待测液体的密度。 [0017] wherein a distance between the first magnetic element and the second magnetic element differential linear relation to the linear density of the liquid to be tested, so the control circuit calculates the first magnetic element of the first float sensor should the position of the line, the straight line of linear position should be after a second magnetic sensing element of the second line of the first float float, i.e. the distance between the first magnetic element and the second magnetic element difference control relationship to calculate the density of the test liquid.

[0018] 使用者在使用本发明具磁性浮球的液位密度感测器时,先将作动杆伸入容器内,容器内液体会通过通孔流入第一浮球外壳内,如此第一及第二浮球均可浮在该容器液面上,且该第一及第二浮球的二磁性元件位置与液面恰呈不同距离,因此该距离变化只与所测量的液体密度呈直线线性关系;使得该作动杆上的感测器计算液体密度时,即能快速且正确地依据直线线性关系计算目前量测液体的精确度。 [0018] When the user level using a density sensor of the present invention having a magnetic float, the first actuator rod extends into the container, liquid in the container will flow into the housing through the through hole of the first float, such that the first and a second float can float on the liquid surface of the container, and the first and second magnetic element position of the second float and the liquid level was just at different distances, and thus only the change in distance measured liquid density linear linear; such that when the actuator rod sensor for calculating the liquid density, i.e., quickly and accurately measure the accuracy of the calculation of liquid based on the current linear linear relationship.

附图说明 BRIEF DESCRIPTION

[0019] 此处所说明的附图用来提供对本发明的进一步理解,构成本申请的一部分,并不构成对本发明的限定。 [0019] The drawings described herein are provided for further understanding of the present invention, constitute a part of this application, do not limit the present invention. 在附图中: In the drawings:

[0020] 图1为本发明具磁性浮球的液位密度感测器的第一较佳实施例的侧视剖面图。 A sectional side view [0020] FIG. 1 a first preferred embodiment of the present invention having a density of magnetic float liquid level sensor.

[0021] 图2为本发明具磁性浮球的液位密度感测器的第一较佳实施例的立体外观图。 [0021] Fig 2 a perspective external view of a first preferred embodiment of the present invention having a density of magnetic float liquid level sensor.

[0022] 图3为本发明具磁性浮球的液位密度感测器的第一较佳实施例的控制电路的电路方块图。 [0022] FIG. 3 is a circuit block diagram of a control circuit of a first preferred embodiment of the present invention having a density of magnetic float liquid level sensor.

[0023] 图4A为本发明具磁性浮球的液位密度感测器的第一较佳实施例的使用状态侧视剖面图。 State of the first preferred embodiment using a side cross-sectional view [0023] FIG. 4A with the present invention, the density of the magnetic float level sensor.

[0024] 图4B为本发明具磁性浮球的液位密度感测器的第一较佳实施例的另一使用状态侧视剂面图。 [0024] FIG. 4B a side view of another use state view of a first preferred embodiment agents embodiment of the present invention having a density magnetic float liquid level sensor.

[0025] 图5为对应图4A及图4B的液位密度感测器的信号输出图。 [0025] FIG. 5 is a signal corresponding to the output level of the density sensor of FIG. 4A and 4B.

[0026] 图6为本发明具磁性浮球的液位密度感测器的特性曲线图。 Characteristic curve [0026] FIG. 6 of the present invention having a density of magnetic float liquid level sensor.

[0027] 图7A为本发明具磁性浮球的液位密度感测器的第二较佳实施例的使用状态侧视剖面图。 [0027] FIG. 7A side sectional view of a second preferred embodiment of the use state of the present invention having a density of magnetic float liquid level sensor.

[0028] 图7B至7D为对应图7A的液位密度感测器的信号输出图。 [0028] FIGS. 7B to 7D of FIG signal output level corresponding to the density sensor 7A.

[0029] 图8为现有具磁性浮球的液位密度感测器的第一浮球的侧视剖面图。 A sectional side view of a first float [0029] FIG. 8 is a conventional magnetic float having a density level sensor.

[0030] 图9为现有具磁性浮球的液位密度感测器的第一浮球的特性曲线图。 [0030] FIG. 9 is a characteristic of a first float level sensor prior density with the magnetic float graph.

[0031] 附图标号说明: [0031] Reference numerals:

[0032] 10感测器 11控制电路 [0032] 10 sensor 11 control circuit

[0033] 12内部电路 121信号接收模块 [0033] 12 internal circuit signal reception module 121

[0034] 122信号对比模块 123信号补偿模块 [0034] 122 signal comparison module 123 a signal compensation module

[0035] 124信号输出模块 13外部电路 [0035] 124 external circuit signal output module 13

[0036] 131晶体管 132脉冲放电模块 [0036] 131 transistor 132 is pulsed discharge module

[0037] 133线圈 134放大器 [0037] The coil 134 Amplifier 133

[0038] 135信号比较器 20作动杆 [0038] The comparator 135 signals the actuator rod 20

[0039] 21感应线 30第一浮球 [0039] 30 of the first sensing line 21 float

[0040] 31外壳 311第一穿孔 [0040] The first through hole 311 of the housing 31

[0041] 312通孔 32第一磁性元件 [0041] 312 through-holes 32 of the first magnetic element

[0042] 33第二浮球 331第二穿孔 [0042] The second through hole 33 of the second float 331

[0043] 332第二磁性元件 40温度感测电路 [0043] The second magnetic element 332 of the temperature sensing circuit 40

[0044] 41温度感测器 42冷点补偿器 [0044] 41 cold spot temperature sensor compensator 42

[0045] 43增益器 44模拟数字转换器 [0045] 43 gain analog to digital converter 44

[0046] 50感测器 51控制器 [0046] 50 sensor 51 controller

[0047] 60作动杆 61感应线 [0047] 60 actuating lever 61 sensing line

[0048] 70第一浮球 71外壳 [0048] The housing 70 of the first float 71

[0049] 711穿孔 72浮体 [0049] The perforations 72 of the floating body 711

[0050] 73第一磁性元件 74第二磁性元件 [0050] The first magnetic element 73 second magnetic element 74

[0051] 80第二浮球 81通孔 [0051] The through hole 80 of the second float 81

[0052] 82第三磁性元件 [0052] 82 third magnetic element

具体实施方式 Detailed ways

[0053] 以下配合图式及本发明的较佳实施例,进一步阐述本发明为达成预定发明目的所采取的技术手段。 Preferred [0053] with the following drawings and embodiments of the present invention, further illustrate the technical means of the present invention to achieve the intended purpose of the invention taken.

[0054] 请参阅图1及图2所示,本发明具磁性浮球的液位密度感测器的第一实施例包含有一感测器10、一作动杆20及一第一浮球30。 [0054] Please refer to FIG. 1 and FIG. 2, a first embodiment of the present invention having a magnetic float level sensor comprises a density sensor 10, an actuator rod 20, and a first float 30.

[0055] 该感测器10具有一控制电路11,该控制电路11具运算功能。 [0055] The sensor 10 has a control circuit 11, 11 of the arithmetic function control circuit.

[0056] 该作动杆20为一中空管体且一端与该感测器10连接,该作动杆20具有一感应线21,该感应线21设置于该作动杆20内且与该感测器10的控制电路11电连接。 [0056] The actuator rod 20 is a hollow tube with one end connected to the sensor 10, the actuation lever 20 has a sensing line 21, the line sensor 21 is disposed on the actuator rod 20 and the inner 11 the sensor control circuit 10 is electrically connected.

[0057] 该第一浮球30具有一外壳31、一第一磁性兀件32及一第二浮球33 ;该外壳31具有二相对的第一穿孔311及二通孔312 ;该相对的二第一穿孔311供该作动杆20插置于其中,使该外壳31套设于该作动杆20上并可沿该作动杆20轴向移动;该通孔312贯穿成形于该外壳31供待测液体流入该外壳31 ;该第一磁性元件32设置该外壳31内远离该感测器10 一端;该第二浮球33设置于该外壳31内并具有二相对的第二穿孔331及一第二磁性兀件332 ;该二相对的第二穿孔331供该作动杆20插置于其中,使该第二浮球33套设于该作动杆20上并可沿该作动杆20轴向移动;该第二磁性元件332设置于该第二浮球33远离该第一浮球30的第一磁性元件32—端磁性元件;其中该第二浮球33的比重小于该第一浮球30的比重;该第二浮球33的材质为发泡材料;该第一及第二磁性元件32、332包含有N1、Co或Fe等化学元素;该 [0057] The first float 30 has a housing 31, a first magnetic member 32 and a second Wu float 33; the housing 31 has two opposite perforations 311 and two first through holes 312; the two opposite a first perforation 311 for the actuation lever 20 which is interposed, so that the housing 31 is sleeved on the actuating rod 20 is movable along the actuation rod 20 moves axially; through the through-hole 312 formed in the housing 31 for the test liquid flows into the housing 31; the first magnetic member 32 disposed within the housing 31 away from the sensor 10 at one end; the second float 33 is provided in the housing 31 and has two opposite perforations 331 and a second a second magnetic member 332 Wu; the two opposite perforations 331 for the second actuation rod 20 which is interposed, so that second float 33 is sleeved on the actuating rod 20 is movable along the actuating lever 20 axial movement; the second magnetic element 332 disposed at the second end of the float 33 away from the magnetic element 32- first magnetic element 30 of the first float; wherein the proportion of the second float 33 is smaller than the first a specific gravity of float 30; the second float 33 made of foamed material; said first and second magnetic element contains 32,332 like N1, Co or Fe chemical elements; the 第一及第二磁性元件32、332的形状为环形、柱形、立方形或不规则形任。 The first and second magnetic element is annular in shape 32,332, cylindrical, cubic or any irregular shape.

[0058] 请参阅图3所示,该感测器10的控制电路11具有一内部电路12及一外部电路13。 [0058] Please refer to FIG. 3, the control circuit 10 of the sensor 11 having an internal circuit 12 and an external circuit 13.

[0059] 该内部电路12通过该外部电路13与该感测器20的感应线21电连接且包含有一信号接收模块121、一信号对比模块122及一信号输出模块124 ;该信号接收模块121用以通过该外部电路13取得磁致效应信号;该信号对比模块122则依据该磁致效应信号计算该待测液体的高度及密度,当要进行测量时,该信号输出模块124输出一起始触信号至该外部电路。 [0059] The internal circuit 12 through the external circuit 13 is electrically connected to the sensor 21 and the sensing line 20 includes a signal receiving module 121, a signal comparison module 122, and a signal output module 124; the signal receiving module 121 with through the external circuit 13 to obtain magnetoresistive effect signal; the signal comparison module 122 to calculate the height and density of the test liquid according to the magnetoresistive effect signal, when to be measured, the signal output module 124 outputs a start signal contact to the external circuit.

[0060] 该外部电路13与该内部电路12及该作动杆20的感应线21电连接且具有一晶体管131、一脉冲放电模块132、一线圈133、一放大器134及一信号比较器135 ;该晶体管131与该内部电路12的信号输出模块124及该脉冲放电模块132电连接,且作为一开关使用并依据上述起始触信号驱动该脉冲放电模块132输出一脉冲信号至该感应线21,当该脉冲信号该经过该感应线21对应该第一浮球30的第一磁性元件32及第二浮球33的第二磁性元件332时,该感应线21会因磁场改变产生振动及磁场向量变化并于该第一磁性元件32及第二磁性元件332在作动杆20上的位置分别输出一第一磁致效应信号及第二磁致效应信号,其中该第一及第二磁致效应信号于该感应线21上的传递速度相同;该线圈133设置于该感应线21远离该感测器20的一端且与该感应线21电连接以接收该第一及第二磁致效应信号;该放大 [0060] The external circuit 13 circuit and the inner 12 and the actuation lever induction line 20 21 is connected and having a transistor 131, a pulse discharge module 132, a coil 133, an amplifier 134 and a signal of the comparator 135; signal output module 131 of the transistor circuit 124 and the interior 12 of the discharge pulse module 132 is electrically connected to, and used as a driving switch and a touch signal based on the above pulse discharge start module 132 outputs a pulse signal to the sensing line 21, when the pulse signal through the line 21 corresponding to the first sensing float 332 when the second magnetic element 32 first magnetic element 33 and the second float 30 of the sensing lines 21 and produces vibration magnetic field vector due to change and changes in the first magnetic element 32 and the second magnetic element 332 outputs a first signal and a second magnetoresistive effect magnetoresistive effect signal on the position of the actuator rod 20, wherein the first and second magneto-effect identical to the signal transmission speed on the sense line 21; the coil 133 to the sensing line 21 is provided at one end remote from the sensor 20 and connected to receive the first and second magneto-electric effect and the sensing signal line 21; the zoom 器134与该线圈133电连接以取得且放大该二磁致效应信号;该信号比较器135与该放大器134电连接以取得该二放大过后的磁致效应信号由模拟信号转换成数字信号后输出至该内部电路12 ;其中该晶体管131可为一金属氧化物半导体场效晶体管。 134 connected to the coil 133 electrically in order to obtain and amplify the two magnetoresistive effect signal; the signal of the comparator 135 is electrically connected to the amplifier 134 to obtain the effect signal magnetoresistive the two amplified after the output from the analog signal into a digital signal 12 to the internal circuit; wherein the transistor 131 may be a metal oxide semiconductor field effect transistor. [0061 ] 请参阅图4A及图4B、图5及图6所示,其中该图4A对应该图5中A部分至图5中C部分,图5中A部分的纵轴代表该脉冲信号,图5中B部分的纵轴代表该第二磁致效应信号,图5中C部分的纵轴代表该第一磁致效应信号,横轴t则皆为时间;其中图4B对应图5中D部分至图5中F部分,图5中D部分的纵轴代表该脉冲信号,图5中E部分的纵轴代表该第二磁致效应信号,图5中F部分的纵轴代表该第一磁致效应信号,横轴t则皆为时间;图6的纵轴代表密度,横轴则代表第一及第二磁致效应信号输出时间差;使用者在使用本发明具磁性浮球的液位密度感测器时,先将该作动杆20插置于待测液体中并令该感测器10露出,该第一浮球30则会浮于液面,并依据该待测液体的密度呈现不同的吃水深度,而该待测液体则有部分液体通过该外壳31上的的通孔312流入该第一浮球30内直到里外液面齐 [0061] Please refer to FIGS. 4A and 4B, the FIG. 5 and FIG. 6, FIG. 4A on which the portion A should be 5 to FIG. 5 part C, Figure 5 the vertical axis represents the pulse signals A portion, the vertical axis represents the B portion of the FIG. 5 signal of the second magnetoresistive effect, the ordinate represents the portion C in FIG. 5 of the first magnetoresistive effect signal, and the horizontal axis t are all the time; Figure 4B corresponds to FIG. 5 D FIG 5 F section to section, the vertical axis of FIG. 5 in part D of the pulse signal representative of the vertical axis represents the ordinate represents the portion E in FIG. 5 of the second magnetoresistive effect signals, in FIG. 5 F portion of the first magneto-effects signal, and the horizontal axis are all the time t; FIG. 6 the vertical axis represents the density, and the abscissa represents the signal output of the first and second magnetic effect induced by a time difference; user level using the present invention with the magnetic float when the density sensor, the first actuating lever 20 is interposed enabling the liquid to be measured and the sensor 10 is exposed, the first float 30 will float on the liquid surface, and the density of the liquid to be tested according to presents a different draft, which liquid sample is a liquid part through the through hole until the inside housing 31 312 flows outside the liquid level in the first flush float 30 ,该第二浮球33则浮于该第一浮球内的液面,并使该第二磁性元件332大致切齐液面;待该二浮球皆静止不动时,该感测器10的控制电路11的内部电路12的信号输出模块124输出一起始触信号至该外部电路13以驱动该晶体管131进而使该脉冲放电模块132输出一脉冲信号至该感应线21,当该脉冲信号该经过该感应线21对应该第一浮球30的第一磁性元件32及第二浮球33的第二磁性元件332时,该感应线21会因磁场改变产生振动及磁场向量变化并于该第一磁性兀件32及第二磁性兀件332在作动杆20上的位置分别输出一第一磁致效应信号及第二磁致效应信号;该第一及第二磁致效应信号由该线圈133接收并输出至该放大器134放大该二磁致效应信号后再输出至该信号比较器135将该二磁致效应信号由模拟转换成数字信号后输出至该内部电路12的信号接收模块121,该信号对比模块122通 The second float 33 floating on the liquid surface within the first float, and the second magnetic element 332 is substantially flush cut level; float when the two are to be stationary, the sensor 10 signal output module internal circuit of the control circuit 11, 12 of the 124 outputs an initial touch signal to the external circuit 13 to drive the transistor 131 and thus make the pulse 132 outputs a pulse signal to the sensing line 21 and discharge module, when the pulse signal through the line 21 corresponding to the first sensing float 332 when the first magnetic element 30 second magnetic element 32 and the second float 33, the magnetic flux lines 21 due to the magnetic field vector and change the vibration and change in the second a magnetic Wu Wu member 32 and the second magnetic member 332 in position on the actuator rod 20 are respectively output a first signal and a second magnetoresistive effect magnetoresistive effect signal; the first and second signals generated by the magneto coil effect 133 receives and outputs to the amplifier 134 amplifies the two magnetoresistive effect signal 135 and then output to the two magnetoresistive effect signal is output to the internal circuit 12. the signal receiving module 121 into digital signals by an analog signal of the comparator, the comparison module 122 through signal 该信号接收模块121取得该二磁致效应信号,并计算输出该脉冲信号及接收该第二磁致效应信号传至该信号对比模块122的时间差,以此时间差计算该待测液体高度(因该第二浮球上的第二磁性元件大致与液面齐平),因为接收该第二磁致效应信号的线圈133装置于该感应线21远离该感测器20的一端,即为该感应线21接近容纳待测液体的容器底部的一端,可进一步得知该第二磁性元件332与该线圈133的距离为待测液体的高度,该第二磁致效应信号由该感应线21对应该第二磁性元件332位置的传递至该线圈133,由以上叙述可得知,该待测液体高度与该第二磁致效应信号传递至该线圈133的关系为:待测液体高度=第二磁致效应信号于该感应线21上的传递速度X该控制电路11输出脉冲信号及接收到该第二磁致效应信号的时间差。 The signal receiving module 121 acquires the two magnetoresistive effect signal, and outputs the pulse signal, and calculates the received signal to the second magnetoresistive effect signal comparison module 122 of the time difference, the time difference in order to calculate the height of the liquid to be measured (by the a second magnetic member on the float is substantially flush with the second level), since the receiving coil the second magnetoresistive effect device 133 to the sensing signal line 21 away from the end of the sensor 20, namely the sensing line 21 near the bottom end of the liquid receiving container to be measured, and that further the distance from the second magnetic element 332 and the height of the coil 133 is a liquid sample, the second signal generated by the magnetoresistive effect sensing lines 21 pairs should first 332 passed the position of the coil to the second magnetic element 133, can be learned from the above description, the effect of the test liquid level signal to the actuator coil 133 and the relationship of the second magnet is: height = second liquid sample magneto effect on the signal transmission speed to the sensing line 21 to the X control circuit 11 outputs the pulse signal and the reception time of the effect of the second magneto-difference signal.

[0062] 以下揭露本发明液位密度感测器依据该第一磁致效应信号与第二磁致效应信号之间的时间差判断该待测液体的密度计算该液体密度的详细过程。 [0062] The following disclosure of the present invention, the level sensor based on the density difference between the effect of the time signal and the second signal of the first magneto magnetoresistive effect determination of the density of the liquid to be tested during the detailed calculation of the liquid density.

[0063] 由观察图4A及图4B可得知,图4A的待测液体与图4B的待测液体高度相同,图4A的第一磁性元件32与该第二磁性元件332之间的距离为dl,图4B的第一磁性元件32与该第二磁性元件332之间的距离为d2,因该第二磁体332的位置固定切齐液面,而该第一磁性元件32的位置则会随待测液体密度而变动,密度越高则该第一浮球30的吃水深度则会因浮力上升而减少,进而带动该第一磁性元件32高度提升而缩短与该第二磁性元件332之间的距离,由dl>d2此观察结果可得知图4A的待测液体密度小于图4B的待测液体密度,再请配合观察图5可得知,图4A及图4B的脉冲信号输出时间一致,该第二磁性元件332因该图4A及图4B的待测液体高度相同而位于该作动杆20上相同位置,而对应该第二磁性元件332位置的第二磁致效应信号输出时间也大致相同,但是该图4A及图4B的第一磁性兀件32则因为待 [0063] The observation can be seen from FIGS. 4A and 4B, FIG. 4A and FIG liquid sample liquid to be measured at the same height. 4B, a first magnetic element 32 of FIG. 4A and the distance between the second magnetic element 332 DL, FIG. 4B, a first magnetic element 32 and the distance between the second magnetic element 332 is d2, depending on the position of the second magnet 332 is fixed cut flush liquid surface, and the position will be with the first magnetic element 32 measured liquid density changes, the higher the density of the first draft the float 30 rises due to buoyancy will be reduced, thereby bringing the first magnetic element 32 and the height of the lift shortened between the second magnetic element 332 distance from dl> d2 this observation can be measured liquid density that is less than FIG 4A 4B, the density of the liquid sample, and then can make with that observed in FIG. 5, the pulse signal output FIGS. 4A and 4B same time, the second magnetic element 332 by the fluid test 4A and 4B located at the same height and the same position on the actuator rod 20, and the second magnetoresistive effect signal output time corresponding to the second position of the magnetic element 332 is also substantially the same, but the first magnetic 4A and FIG. 4B Wu member 32 to be because 液体密度不同而高度不同,因此该图4A的第一磁致效应信号输出时间是晚于该图4B的第一磁致效应信号输出时间,通过观察图5中B部分、图5中C部分、图5中E部分及图5中F部分可得知该图4A的第一及第二磁致效应信号输出时间差tl大于图4B的第一及第二磁致效应信号输出时间差t2,由以上叙述可得知,第一磁性元件32与该第二磁性元件332之间的距离正比于第一及第二磁致效应信号输出时间差,也意即待测液体的密度反比于第一及第二磁致效应信号输出时间差,该内部电路12的信号对比模块122依据该第一及第二磁致效应信号输出时间差计算待测液体的密度。 Liquids of different densities and different in height, the first magnetic actuator in FIG. 4A the effect signal output time is later than the output signal of the first magnetoresistive effect time of FIG. 4B, by observing the section B in FIG. 5, portion C in FIG. 5, in part E and part F of FIG. 5 in FIG. 5 may output signals that effect the actuation of the first and second magnetic FIG. 4A is greater than a first time difference between tl and the second magnetoresistive effect signal output time difference t2 of FIG. 4B, by the above described can be learned, a first magnetic element 32 and the distance between the second magnetic element 332 is proportional to the output signal of the first and second magnetic effects induced by the time difference, which means also inversely proportional to the density of the liquid to be measured first and second magnetic induced response time difference signal output, a signal comparison module 122 of the internal circuit 12 outputs a signal induced response time difference calculating density of the liquid to be measured based on the first and second magnet.

[0064] 又,再进一步观察图4A及图4B可得知,图4A及图4B的第二浮球33已分别贴齐于该第一浮球30的外壳31邻近及远离该感测器10的一端;图4A代表的是本发明具磁性浮球的液位密度感测器所能测量的最低待测液体密度,如果待测液体密度低于该最低待测液体密度,该第一浮球30则会整个沉入该待测液体,并压迫外壳31内的第二浮球33使该第二浮球33无法浮于液面,该第二磁性元件332位于液面之下,进而使待测液体高度测量出现误差;而图4B代表的是本发明具磁性浮球的液位密度感测器所能测量的最高待测液体密度,如果待测液体密度高于该最低待测液体密度,该第一浮球30则会整个浮出该待测液体,并带动外壳31内的第二浮球33浮出液面,使该第二磁体332位于液面之上,进而使待测液体高度测量出现误差;又由上述说明可得知,该第二磁性元件332的位置会影 [0064] and, further observed FIGS. 4A and 4B can be known, the second float 33 of FIGS. 4A and 4B are respectively attached flush to the housing 31 adjacent the first float 30 and sensor 10 away from the end; FIG. 4A represents the minimum density of the test liquid with the density of magnetic float level sensor of the present invention can be measured, if the measured liquid density below the minimum liquid sample density, the first float 30 will sink into the whole liquid sample, and presses the second float 33 within the housing 31 such that the second can not float 33 floating on the liquid surface, the second magnetic element 332 is located below the liquid level, thereby enabling to be measuring the liquid level measurement error occurs; and Figure 4B represents the highest density of the liquid to be tested with the present invention a magnetic float level sensor can measure the density, the minimum density of the liquid to be measured if the density is higher than liquid sample, the first float 30 will float the whole liquid sample, and a second drive float floating within the housing 31 33 surface, so that the second magnet 332 is located above the liquid surface, thereby enabling the height of the test liquid measurement error occurs; and can be learned from the above description, the second magnetic element 332 positions will Movies 待测液体密度的测量,因此,待测液体的密度须介于该最低待测液体密度与最高待测液体密度之间才能令本发明具磁性浮球的液位密度感测器正常运作;再配合观察图6可得知待测液体密度与第一及第二磁致效应信号输出时间差呈一线性关系,且时间差tl所对应的密度即为最低待测液体密度,而时间差t2所对应的密度则为最高待测液体密度,又因密度与时间差关系是呈线性,当所测得时间差介于tl与t2之间时,可直接以线性关系计算,举例来说,假使测得时间差为t (t2〈t〈tl),可通过线性关系推得,对应t的“待测液体密度”为“最高液体密度+t X (最低液体密度-最高液体密度)/ (tl-t2) ”,相较于现有具磁性浮球的液位密度感测器所测得呈现双曲线关系的密度与距离更容易计算。 Measured liquid density measurement, and therefore, the density of the liquid to be measured can be interposed between the lowest liquid to be tested so that the density of the test liquid with the highest density of the present invention having a density magnetic float level sensor is functioning properly; then FIG 6 that may be observed with the test fluid density of the first and second magneto-time difference signal output effect showed a linear relationship, and the time difference tl is the lowest density corresponding to the density of the test liquid, and the time t2 corresponding to the density difference was the highest measured liquid density, because the density is a linear relationship between the time difference, between tl and t2 when the difference between the measured time, a linear relationship can be calculated directly, for example, if the measured time difference T ( t2 <t <tl), a linear relationship can be obtained by push, t corresponding to the "measured liquid density" as "the highest density of the liquid + t X (minimum liquid density - maximum liquid density) / (tl-t2)", compared to easier to compute in the conventional sensor having a magnetic float level density measured by the density hyperbolic curve presented distance.

[0065] 此外,由于储存时的温度会影响待测液体的体积,当温度提高时,待测液体的体积膨胀,使该待测液体的高度上升,而当温度下降时,该待测液体的体积收缩,使该待测液体的高度下降,使管理者难以确认该待测液体的储存量,因此通常本领域会订有一标准温度(例如摄氏25度),且通常管理者会取该标准温度时的待测液体高度作为该待测液体的实际储存量,请参阅图3所示,该控制电路11可进一步具有一温度感测电路40,而该内部电路12则进一步具有一信号补偿模块123,其中该温度感测电路40包含有一温度感测器41、一冷点补偿器42、二增益器43及二模拟数字转换器44 ;该温度感测器41与其中一增益器43电连接,该增益器43再电连接至其中一模拟数字转换器44,该数字模拟转换器44再电连接至该内部电路12的信号对比模块122,该温度感测器41依据待测液体 [0065] Further, since the temperature during storage will affect the volume of liquid to be measured, when the temperature is increased, the volume expansion of the liquid to be measured, increase the height of the test liquid, and when the temperature drops, the test liquid volume shrinkage, the height of the liquid sample is lowered, making it difficult to confirm the manager of the storage amount of liquid to be tested, the present art will therefore generally have a standard set temperature (e.g. 25 degrees Celsius), and generally will take the standard temperature manager when the height of the liquid to be tested as the actual storage amount of liquid to be measured, see FIG. 3, the control circuit 11 may further have a temperature sensing circuit 40, and the internal circuit 12 further has a signal compensation module 123 wherein the temperature sensing circuit 40 includes a temperature sensor 41, a cold spot compensator 42, two 43 and two gain analog to digital converter 44; and wherein the temperature sensor 41 is electrically connected to a gain device 43, this gain is then electrically connected to 43 wherein an analog to digital converter 44, the digital-analog converter 44 and then electrically connected to the internal circuit 12 of the signal comparison module 122, the temperature sensor 41 based on the fluid test 度输出一温度信号再通过该增益器43及该数字模拟转换器44放大并转换该温度信号后再输出至该信号补偿模块123 ;该冷点补偿器42则与另一增益器43电连接,该增益器43再电连接至另一数字模拟转换器44,该数字模拟转换器44再电连接至该内部电路12的信号补偿模块123,该冷点感测器42依据待测液体温度输出一冷点补偿信号再通过该增益器43及该数字模拟转换器44放大并转换该冷点补偿信号后再输出至该信号补偿模块123,而该信号补偿模块123则依据该温度信号及该冷点补偿信号输出一补偿信号至该信号对比模块122,使该信号对比模块122在计算该待测液体高度时依据该补偿信号一并进行液位高度补偿,即依据该待测液体储存时的温度;当该待测液体的温度高于该标准温度时,调降该信号对比模块122所实际计算的该待测液体的高度;当该待测液体的温度低于该 A temperature of the output signal is then amplified and converted signal is output to the temperature compensation module 123 and then the signal through the gain unit 43 and the digital-analog converter 44; cold spot of the compensator 42 is electrically connected to a further gain of 43, the gain 43 is then electrically connected to another digital-analog converter 44, the digital-analog converter 44 and then electrically connected to the internal circuit 12 of the signal compensation module 123, the cold spot temperature of the liquid sensor 42 outputs a measured basis then through the cold spot to the gain compensation signal 43 and the digital-analog converter 44 converts the amplified and then cold spot compensation signal output to the signal compensation module 123, and the signal compensation module 123 according to the signal and the cold spot temperature outputting a compensation signal to compensation signal of the signal comparison module 122, so that the signal level comparison module 122 for collectively height compensation according to the compensation signal in the calculation of the liquid level to be measured, i.e. the temperature at which the test fluid storage basis; when the temperature of the liquid to be measured is higher than the standard temperature, the actual cut 122 calculates the signal comparison module the level of the liquid to be tested; when the temperature of the liquid to be measured is below the 标准温度时,调高该信号对比模块122所实际计算的该待测液体的高度;通过该信号补偿模块123及该温度感测电路40,使该管理者能以该待测液体于该标准温度时的高度得知该待测液体的实际储存量。 When the standard temperature, the height of 122 to increase the signal comparison module actually calculated the test liquid; this signal compensation module 123 and the temperature sensing circuit 40, so that the managers can test the temperature of the liquid in the standard that the actual height of the storage amount of liquid to be measured.

[0066] 请参阅图7A所示,此为本发明具磁性浮球的液位密度感测器的第二实施例用以测量一双相介面待测液体且包含有一感测器10、一作动杆20及二第一浮球30,其中该双相介面由上而下分别为空气/第一液体及第一液体/第二液体,比重由大至小则为第二液体>第一液体> 空气,而该二第一浮球30则分别位于空气/第一液体及第一液体/第二液体介面,本实施例除具有二第一浮球30且位于第一液体/第二液体介面的第一浮球30的比重大于位于空气/第一液体的第一浮球30,其余结构及原理皆与上述第一实施例相同。 [0066] Please refer to FIG. 7A, the present invention has a density level of the magnetic sensor of the second embodiment of the float for measuring a two-phase liquid and the test interface includes a sensor 10, an actuator rod two first float 20 and 30, wherein the bipolar air interface respectively from top to bottom / first liquid and a first liquid / second liquid, from large to small specific gravity compared with a second liquid> first liquid> air , while the two first float 30 located air / liquid a first liquid and a first / second fluid interface, in addition to the present embodiment having two first float 30 and located between the first liquid / liquid interface of the second a specific gravity of float 30 is greater than / the first float 30 is located a first liquid air, the remaining structure and principle are the same as in the first embodiment.

[0067] 请再配合参阅图7B至7D所示,图7B的纵轴代表脉冲信号;图7C的纵轴代表位于空气/第一液体的第一浮球30的磁致效应信号;图7D的纵轴代表位于第一液体/第二液体介面的第一浮球30的磁致效应信号,横轴t则皆为时间,因为对应图7C的第一浮球30较接近该感测器10,磁致效应信号的输出顺序依序为对应图7C的第一浮球30的第二磁致效应信号,再来是对应图7C的第一浮球30的第一磁致效应信号,接下来是对应图7D的第一浮球30的第二磁致效应信号,再来是对应图7D的第一浮球30的第一磁致效应信号,该控制电路11以接收到对应图7C的第二磁致效应信号的时间计算出该第一待测液体高度,再以接收到对应图7D的第二磁致效应信号的时间计算出该第二待测液体高度;又,该控制电路11以接收到对应图7C的第一浮球30的第一及第二磁致效应信号之间的时间差tl计算该第 [0067] Please referring to FIG. 7B to 7D, the vertical axis represents the pulse signal of FIG. 7B; FIG. 7C, the vertical axis represents the signal of the magnetic effects induced by the first air float / the first liquid 30; FIG. 7D the first float is located in a first vertical axis represents liquid / liquid interface of the second magnetoresistive effect signal 30, the horizontal axis t are all the time, as a first float corresponding to FIG. 7C 30 10 closer to the sensor, magnetoelastic effect signal output order sequentially as the second magneto-effect signal corresponding to a first float 30 of the FIG. 7C, corresponding to the first magnetic actuator is again signals of the first effect of the float 30 in FIG 7C, followed by the corresponding FIG. 7D second float first magnetoresistive effect signal 30, again corresponding to a first magnetic effect is first actuation signal 30, the float of FIG. 7D, the control circuit 11 to receive a corresponding view of a second magnetic actuation 7C time effect of the first signal to calculate the height of the liquid sample, and then to receive the second time corresponding to FIG. 7D magnetoelastic effect signal calculated height of the second liquid to be tested; and, the control circuit 11 to receive the corresponding the time between the first and second magneto-effect signal in FIG. 7C first float 30 of the calculated difference tl 待测液体密度;该控制电路11以接收到对应图7D的第一浮球30的第一及第二磁致效应信号之间的时间差t2计算该第二待测液体密度,且因为该第二浮球33被包覆于对应的第一浮球30之内,并不会出现脱离该第一浮球30的情况。 Measured liquid density; the control circuit 11 to the time between the first and second magnetoresistive effect a first received signal corresponding to FIG. 7D float 30 calculates the second difference t2 measured liquid density, and since the second the float 33 is coated on the first float 30 corresponding to, and will not float out of the first case 30.

[0068] 由该第二较佳实施例可得知,该控制电路11依据接收到的二第二磁致效应信号分别判断该第一及第二液体高度,该控制电路11又以各第一浮球30的二磁致效应信号的时间差来计算该第一及第二液体密度,通过上述手段便可同时计算多相介面的液体高度及山/又ο [0068] can be seen from the second preferred embodiment, the control circuit 11 based on the two received signals the second magnetoresistive effect determines the first and second liquid height, 11 in turn each of the first control circuit float two magnetically induced response time difference signal to calculate the density of the first and second liquid, and the liquid level can be also calculated by the above-described mountain multiphase interface means / and ο 30 of

[0069] 综上所述,本发明具磁性浮球的液位密度感测器确实以一种易于测量密度的方式测量待测液体密度,因此提升了精确性以及减少了校正上的麻烦;又,该第二浮球33被该第一浮球30完整包覆,使该第二浮球33上的第二磁性元件332与该第一浮球30上的第一磁性元件32之间的距离限制于一定范围内,进一步提高测量的精确性,且通过调整该第一浮球30及第二浮球33的比重可使使用者能够以本发明测量不同密度的待测液体。 [0069] In summary, the present invention has a density magnetic float level sensor is actually measured in an easy way to measure the density of the test liquid density, and therefore improve the accuracy and reduces the trouble of calibration; and the second float 33 is covering the complete first float 30, the second magnetic member on the second float 33 332 and the distance between the first magnetic element 32 on the first float 30 limited to a certain range, to further improve the accuracy of measurement, and by adjusting the specific gravity allows the user to first float and a second float 30 is capable of measuring 33 different densities of liquids to be tested to the present invention.

[0070] 以上所述的具体实施例,对本发明的目的、技术方案和有益效果进行了进一步详细说明,所应理解的是,以上所述仅为本发明的具体实施例而已,并不用于限定本发明的保护范围,凡在本发明的精神和原则之内,所做的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。 [0070] The foregoing specific embodiments of the object, technical solutions, and advantages of the invention will be further described in detail, should be understood that the above descriptions are merely embodiments of the present invention, it is not intended to limit the scope of the present invention, all within the spirit and principle of the present invention, any changes made, equivalent substitutions and improvements should be included within the scope of the present invention.

Claims (14)

1.一种具磁性浮球的液位密度感测器,其特征在于,包含有: 一作动杆,其包含一中空管体及一感应线;其中所述感应线穿设并固定于所述中空管体内; 一感测器,设置于所述作动杆的中空管体的一端,并包含有一具运算功能的控制电路,所述控制电路与所述感应线电连接; 至少一第一浮球,其包含有: 一外壳,其具有二相对的第一穿孔及至少一通孔;二相对的第一穿孔供所述作动杆插置于其中,使所述外壳套设于所述作动杆上并可沿所述作动杆轴向移动;所述通孔贯穿形成于所述外壳上,供使待测液体流入所述外壳;一第一磁性元件,固定于所述外壳内与所述作动杆垂直且远离所述感测器的一面;一第二浮球,设置于所述外壳内并具有二相对的第二穿孔及一第二磁性元件;二相对的第二穿孔供所述作动杆插置于其中,使所述第二浮球套设于所述 A magnetic sensor having a density float of the liquid level, characterized in that, comprising: an actuator rod, which comprises a hollow tube and a sensing line; wherein the induction line passes through and is fixed to the said hollow tube body; a sensor disposed at an end of the hollow tube for the rod, and the control circuit includes a calculation function, said control circuit and electrically connected to the sensing lines; at least one a first float, comprising: a housing having two opposite first through hole and at least one through hole; two opposite perforations for the first actuating lever interposed wherein the outer shell is provided to the Shuzuo rod and movable along said axial movement of the actuator rod; through the through hole formed on the housing for the liquid to be measured into said enclosure; a first magnetic member fixed to the housing within the actuator rod perpendicular and away from the sensor side; a second float, disposed within the housing and having two opposite second perforation and a second magnetic element; a second two opposite perforations for the interposed actuator rod wherein the sleeve is provided in the second float 动杆上并可沿所述作动杆轴向移动;所述第二磁性元件固定于所述第二浮球远离所述第一浮球的第一磁性元件一端;又,所述第二浮球的比重小于所述第一浮球'及其中所述第一磁性元件及第二磁性元件之间的距离差与所述待测液体的密度呈直线线性关系,故所述控制电路计算出所述第一浮球的第一磁性元件对应所述感应线的位置,与对应所述第一浮球的第二浮球的第二磁性元件对应所述感应线的位置后,即以第一磁性元件及第二磁性元件之间的距离差,对照所述直线线性关系以计算出所述待测液体的密度。 Rod and movable along said axial movement of the actuator rod; said second magnetic element is fixed to said second float away from the first magnetic element float a first end; and a second floating the density of the liquid to be measured and the distance difference between the specific gravity of the float is smaller than said first 'and said first magnetic element and the second linear magnetic element linear relationship, it is calculated by the control circuit after the position of the first magnetic element of the said first float corresponding sensing line and a corresponding one of said second float float first magnetic element a second position corresponding to said sensing line, i.e., a first magnetic the distance between the magnetic element and the second difference element, the linear control linear relationship to calculate the density of the liquid to be measured.
2.根据权利要求1所述的液位密度感测器,其特征在于,所述控制电路依据所述第一浮球内的第二浮球的第二磁性元件对应所述感应线的位置,以计算出所述待测液体的高度。 The density of the fluid level sensor as claimed in claim 1, wherein said first control circuit according to the second magnetic element in a second float position of the float corresponding to said sensing line, to calculate the height of the test liquid.
3.根据权利要求1或2所述的液位密度感测器,其特征在于,包含有多个第一浮球的比重不同,越远离所述感测器的第一浮球的比重越重;且所述多个第一浮球内的第二浮球比重不同,越远离所述感测器的第二浮球的比重越重。 The density of the liquid level sensor of claim 1 or claim 2, wherein a plurality of different specific gravity comprising a first float, the specific gravity of the weight away from the first float sensor ; and a specific gravity different from the plurality of second float within the first float, the heavier specific gravity of the second sensor away from the float.
4.根据权利要求2所述的液位密度感测器,其特征在于,所述控制电路计算出所述待测液体的密度的步骤包含有: 输出一脉冲信号至所述感应线,当所述脉冲信号经过所述第一及第二磁性元件时会分别产生一第一磁致效应信号及第二磁致效应信号,其中所述第一及第二磁致效应信号于所述感应线上的传递速度为相同且固定; 接收返回的所述第一及第二磁致效应信号; 计算第一及第二磁致效应信号的时间差,且所述第一及第二磁致效应信号于不同待测液体密度的时间差与所述待测液体的密度呈直线线性关系,其中所述时间差与第一及第二磁性元件之间的距离差关系为: 第一及第二磁致效应信号的时间差=第一及第二磁性元件之间的距离差/磁致效应信号的传递速度;及以时间差对应直线线性关系,求得所述待测液体密度。 According to claim density level sensor of claim 2, wherein said control circuit calculates the step density of the test liquid comprising: outputting a pulse signal to the sensing line, when the said pulse signal passes through the first and second magnetic elements respectively produce a first signal and a second magnetoresistive effect magnetoresistive effect signal, wherein said first and second signals in said magneto-inductive line effects the transmission speed is the same and is fixed; receiving said return first and second magnetoelastic effect signal; calculating a first time and a second magnetoresistive effect a difference signal, and the first and second signals at different magnetoresistive effect time difference measured liquid density and the density of the liquid to be measured linearly linear relationship, wherein a relationship between the distance difference and the time difference between the first and second magnetic elements: a first and second time difference signals magnetoelastic effect = distance between the first and the second magnetic element difference / magneto signal transmission speed effect; and a time corresponding to a difference straight linear relationship, the determined density of the liquid to be tested.
5.根据权利要求3所述的液位密度感测器,其特征在于,所述控制电路计算出所述待测液体的密度的步骤包含有: 输出一脉冲信号至所述感应线,当所述脉冲信号经过所述第一及第二磁性元件时会分别产生一第一磁致效应信号及第二磁致效应信号,其中所述第一及第二磁致效应信号于所述感应线上的传递速度相同且固定; 接收返回的所述第一及第二磁致效应信号; 计算第一及第二磁致效应信号的时间差,且所述第一及第二磁致效应信号于不同待测液体密度的时间差与所述待测液体的密度呈直线线性关系,其中所述时间差与第一及第二磁性元件之间的距离差关系为: 第一及第二磁致效应信号的时间差=第一及第二磁性元件之间的距离差/磁致效应信号的传递速度'及以时间差对应直线线性关系,求得所述待测液体密度。 5. The level of the density sensor as claimed in claim 3, wherein said control circuit calculates the step density of the test liquid comprising: outputting a pulse signal to the sensing line, when the said pulse signal passes through the first and second magnetic elements respectively produce a first signal and a second magnetoresistive effect magnetoresistive effect signal, wherein said first and second signals in said magneto-inductive line effects and fixing the same transmission speed; receiving said first and second magnetic return effect actuation signal; calculating a first time and a second magnetoresistive effect a difference signal, and the first and second signals to a magnetoelastic effect to be different time difference measuring liquid density and the density of the liquid to be measured linearly linear relationship, wherein a relationship between the distance difference and the time difference between the first and second magnetic elements: a first and second time difference signals magnetoelastic effect = the distance between the first and second differential magnetic element / magneto signal transmission speed effect "and the time difference corresponds to a linear relationship between linear, the determined density of the liquid to be tested.
6.根据权利要求2所述的液位密度感测器,其特征在于,所述控制电路计算出所述待测液体高度的步骤包含有: 输出一脉冲信号至所述感应线,当所述脉冲信号经过所述第二磁性元件时会产生一第二磁致效应信号; 计算所述控制电路输出脉冲信号及接收到所述第二磁致效应信号的时间差:及以所述时间差求得所述待测液体高度,其中待测液体高度与时间差的关系为: 待测液体高度=时间差X第二磁致效应信号于所述感应线上的传递速度。 The density of the liquid level sensor as claimed in claim 2, wherein said control circuit calculates the step height of the liquid sample comprising: outputting a pulse signal to the sensing line, when the past the second pulse signal generates a second magnetic element magnetoresistive effect signal; calculating said control circuit outputs a pulse signal and receiving the second magneto-time effect of the difference signal: the time difference obtained and to the the height of said liquid sample, wherein the test liquid and the height relationship is a time difference: difference in time measured X = height of liquid a second signal to said magneto-inductive effects of the line transmission speed.
7.根据权利要求4所述的液位密度感测器,其特征在于,所述控制电路包含有一外部电路及一内部电路,其中: 所述外部电路与所述感应线及所述内部电路电连接且具有: 一线圈,用以接收所述磁致效应信号; 一放大器,其与所述线圈电连结且放大所述磁致效应信号; 一信号比较器,其与所述放大器电连接以取得放大过后的磁致效应信号后将所述磁致效应信号由模拟信号转换成数字信号后输出至所述内部电路; 一晶体管,与所述内部电路电连接且作为一开关使用'及一脉冲放电电路,与所述晶体管电连接且输出所述脉冲信号至所述感应线;及所述内部电路与所述外部电路电连接且具有: 一信号接收模块,用以接收来自所述外部电路输入的磁致效应信号; 一信号对比模块,其依据所述磁致效应信号计算所述待测液体的密度;及一信号输出模块,其输出 The density of the liquid level sensor as claimed in claim 4, wherein said control circuit comprises an external circuit and an internal circuit, wherein: the external circuit and the sensing line and the internal electrical circuit connection and having: a coil for receiving said magnetoresistive effect signal; an amplifier, which is electrically connected to the coil of the magnetic actuator and effect signal amplification; a signal comparator connected to said amplifier circuit to obtain after the magnetoresistive effect magnetoresistive effect signal after amplification outputted by the analog signal into a digital signal to said internal circuit; a transistor is electrically connected to the internal circuit and a switch using the 'discharge pulse and as a circuit, electrically connected to the transistor and outputs the pulse signal to the sensing line; and the internal circuit is electrically connected to the external circuit and having: a signal receiving module for receiving input from the external circuit magnetoelastic effect signal; a signal comparison module magnetoresistive effect according to the density of the liquid to be measured is calculated signal; and a signal output module that outputs 起始触信号至所述外部电路驱动所述脉冲信号输出所述磁致效应信号。 The external drive circuit to the pulse signal output start signal of the magnetoresistive effect contact signal.
8.根据权利要求5所述的液位密度感测器,其特征在于,所述控制电路包含有一外部电路及一内部电路,其中: 所述外部电路与所述感应线及所述内部电路电连接且具有: 一线圈,用以接收所述磁致效应信号; 一放大器,其与所述线圈电连结且放大所述磁致效应信号; 一信号比较器,其与所述放大器电连接以取得放大过后的磁致效应信号后将所述磁致效应信号由模拟信号转换成数字信号后输出至所述内部电路; 一晶体管,与所述内部电路电连接且作为一开关使用'及一脉冲放电电路,与所述晶体管电连接且输出所述脉冲信号至所述感应线;及所述内部电路与所述外部电路电连接且具有: 一信号接收模块,用以接收来自所述外部电路输入的磁致效应信号; 一信号对比模块,其依据所述磁致效应信号计算所述待测液体的密度;及一信号输出模块,其输出 A density according to the level sensor of claim 5, wherein said control circuit comprises an external circuit and an internal circuit, wherein: the external circuit and the sensing line and the internal electrical circuit connection and having: a coil for receiving said magnetoresistive effect signal; an amplifier, which is electrically connected to the coil of the magnetic actuator and effect signal amplification; a signal comparator connected to said amplifier circuit to obtain after the magnetoresistive effect magnetoresistive effect signal after amplification outputted by the analog signal into a digital signal to said internal circuit; a transistor is electrically connected to the internal circuit and a switch using the 'discharge pulse and as a circuit, electrically connected to the transistor and outputs the pulse signal to the sensing line; and the internal circuit is electrically connected to the external circuit and having: a signal receiving module for receiving input from the external circuit magnetoelastic effect signal; a signal comparison module magnetoresistive effect according to the density of the liquid to be measured is calculated signal; and a signal output module that outputs 起始触信号至所述外部电路驱动所述脉冲信号输出所述磁致效应信号。 The external drive circuit to the pulse signal output start signal of the magnetoresistive effect contact signal.
9.根据权利要求7所述的液位密度感测器,其特征在于,所述内部电路进一步包含有一信号补偿模块; 所述控制电路进一步包含有一温度感测电路,其具有: 一温度感测器,其依据所述待测液体温度输出一温度信号; 一增益器,与所述温度感测器电连接且放大所述温度信号; 一模拟数字转换器,与所述增益器及所述内部电路的信号补偿模块电连接,且将所述温度信号由模拟信号转换成数字信号后输出至所述信号补偿模块;及其中所述信号补偿模块依据所述温度信号输出一补偿信号至所述信号对比模块,所述信号对比模块则依据所述补偿信号对所述计算出的待测液体的高度进行液位高度补偿。 The density level according to claim 7, said sensor, wherein said internal circuit further comprises a signal compensation module; the control circuit further includes a temperature sensing circuit, comprising: a temperature sensing whose output according to the measured temperature of a liquid temperature signal; a gain device, electrically connected to the temperature sensor and the temperature signal amplification; an analog to digital converter, said gain device and the interior of the signal compensation circuit module is electrically connected to the temperature signal and the output from the analog signal into a digital signal to the signal compensation module; said signal compensation module according to the temperature signal and outputting a compensation signal to the signal comparison module, the comparison module is a signal based on the compensation signal to compensate for the height of the liquid level of the liquid to be measured is calculated.
10.根据权利要求7所述的液位密度感测器,其特征在于,所述内部电路进一步包含有一信号补偿模块; 所述控制电路进一步包含有一温度感测电路,其具有: 一冷点补偿器,其依据所述待测液体温度输出一冷点补偿信号; 一增益器,与所述冷点补偿器电连接且放大所述冷点补偿信号; 一模拟数字转换器,与所述增益器及所述内部电路的信号补偿模块电连接,且将所述冷点补偿信号由模拟信号转换成数字信号后输出至所述信号补偿模块;及其中所述信号补偿模块依据所述冷点补偿信号输出一补偿信号至所述信号对比模块,所述信号对比模块则依据所述补偿信号对所述计算出的待测液体的高度进行液位高度补m\-ΖΧ ο 10. The density level sensor according to claim 7, wherein said internal circuit further comprises a signal compensation module; the control circuit further includes a temperature sensing circuit, having: a cold point compensation whose output according to the temperature of a cold spot test liquid compensation signal; a gain is connected to the cold spot of the compensator and amplified electrical cold spot compensation signal; an analog-digital converter, the gain of and a signal compensation module electrically connected to the internal circuit, and the cold spot of the compensating signal output from the analog signal into a digital signal to the signal compensation module; and wherein the signal compensation module according to the cold spot compensation signal outputting a compensation signal to the signal comparison module, the comparison module is a signal based on the compensation signal of the liquid level height of the fill m the calculated liquid test \ -ΖΧ ο
11.根据权利要求7所述的液位密度感测器,其特征在于,所述内部电路进一步包含有一信号补偿模块; 所述控制电路进一步包含有一温度感测电路,其具有: 一温度感测器,其依据所述待测液体温度输出一温度信号; 一冷点补偿器,其依据待测液体温度输出一冷点补偿信号; 两增益器,分别与所述温度感测器及所述冷点补偿器电连接以分别取得所述温度信号及所述冷点补偿信号,并分别放大所述温度信号及所述冷点补偿信号; 两模拟数字转换器,分别与所述两增益器电连接,且共同与所述内部电路的信号补偿模块电连接,并分别将所述温度信号及所述冷点补偿信号由模拟信号转换成数字信号后输出至所述信号补偿模块;及其中所述信号补偿模块依据所述温度信号及所述冷点补偿信号输出一补偿信号至所述信号对比模块,所述信号对比模块则依据所 11. The density level sensor according to claim 7, wherein said internal circuit further comprises a signal compensation module; the control circuit further includes a temperature sensing circuit, comprising: a temperature sensing whose output according to the measured temperature of a liquid temperature signal; a cold spot compensator which outputs a compensation signal based on the cold spot temperature of the liquid to be tested; two gain device, each of the cold and the temperature sensor point compensation is electrically connected to said temperature signal respectively, to obtain the cold spot and the compensation signal, and amplify said temperature signal and the compensation signal cold spot; two analog to digital converters, respectively connected electrically to the two gain and commonly connected to the electric signal compensation module internal circuit, respectively, and the cold spot temperature signal and the compensation signal output from the analog signal into a digital signal to the signal compensation module; and wherein the signal compensating module according to the temperature signal and the compensation signal output of the cold spot is a compensation signal to the signal comparison module, the comparison module is based on the signal 述补偿信号对所述计算出的待测液体的高度进行液位高度补偿。 Said compensation signal calculated height of the liquid level to be measured for height compensation.
12.根据权利要求1或2所述的液位密度感测器,其特征在于,所述第一及第二磁性元件包含有N1、Co或Fe任一种化学元素。 12. The density level sensor according to claim 1 or claim 2, characterized in that the first and second magnetic elements with N1, Co or Fe any chemical element.
13.根据权利要求1或2所述的液位密度感测器,其特征在于,所述第一及第二磁性元件的形状为环形、柱形、立方形或不规则形任一种。 Claim 13. The density level of the sensor 1 or 2, characterized in that the shape of the first and the second magnetic element is an annular, cylindrical, cubic or any irregular shape.
14.根据权利要求1或2所述的液位密度感测器,其特征在于,所述第二浮球的材质为发泡材料。 Claim 14. The density level of the sensor 1 or 2, characterized in that said second float is made of foamed material.
CN 201410016359 2014-01-14 2014-01-14 Liquid level density sensor provided with magnetic floating balls CN104776881A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201410016359 CN104776881A (en) 2014-01-14 2014-01-14 Liquid level density sensor provided with magnetic floating balls

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201410016359 CN104776881A (en) 2014-01-14 2014-01-14 Liquid level density sensor provided with magnetic floating balls

Publications (1)

Publication Number Publication Date
CN104776881A true true CN104776881A (en) 2015-07-15

Family

ID=53618493

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201410016359 CN104776881A (en) 2014-01-14 2014-01-14 Liquid level density sensor provided with magnetic floating balls

Country Status (1)

Country Link
CN (1) CN104776881A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105675437A (en) * 2015-12-29 2016-06-15 长沙学院 Displacement difference solution density measuring equipment and measuring equipment thereof
CN106827819A (en) * 2017-02-15 2017-06-13 长兴水木机电有限公司 Printer ink feeding device with refining function

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2611880Y (en) * 2003-03-26 2004-04-14 哈尔滨海外高科技开发有限公司 Liquid level, density and temp transducer
CN2681122Y (en) * 2004-03-19 2005-02-23 徐晗 Multipoint on-line density measuring transducer
CN101371110A (en) * 2006-01-30 2009-02-18 富兰克林燃料系统公司 Liquid height and density measurement equipment
CN202057392U (en) * 2011-05-11 2011-11-30 北京航天金泰星测技术有限公司 Complex sensor
CN102341689A (en) * 2009-01-06 2012-02-01 维德-鲁特公司 Magnetostrictive liquid density detector
KR101141961B1 (en) * 2012-01-12 2012-05-04 (주) 다인레벨 Liquid level and density measurement apparatus
US20120152016A1 (en) * 2010-07-26 2012-06-21 Veeder-Root Company Magnetostrictive probe having phase separation float assembly
CN102778254A (en) * 2011-05-11 2012-11-14 北京航天金泰星测技术有限公司 On-line liquid detection device and density calibration system and density calibration method thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2611880Y (en) * 2003-03-26 2004-04-14 哈尔滨海外高科技开发有限公司 Liquid level, density and temp transducer
CN2681122Y (en) * 2004-03-19 2005-02-23 徐晗 Multipoint on-line density measuring transducer
CN101371110A (en) * 2006-01-30 2009-02-18 富兰克林燃料系统公司 Liquid height and density measurement equipment
CN102341689A (en) * 2009-01-06 2012-02-01 维德-鲁特公司 Magnetostrictive liquid density detector
US20120152016A1 (en) * 2010-07-26 2012-06-21 Veeder-Root Company Magnetostrictive probe having phase separation float assembly
CN202057392U (en) * 2011-05-11 2011-11-30 北京航天金泰星测技术有限公司 Complex sensor
CN102778254A (en) * 2011-05-11 2012-11-14 北京航天金泰星测技术有限公司 On-line liquid detection device and density calibration system and density calibration method thereof
KR101141961B1 (en) * 2012-01-12 2012-05-04 (주) 다인레벨 Liquid level and density measurement apparatus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
任波等: "磁致伸缩液位传感器机理研究", 《传感器技术》 *
李一博等: "基于磁致伸缩效应的液体密度在线测量方法", 《天津大学学报》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105675437A (en) * 2015-12-29 2016-06-15 长沙学院 Displacement difference solution density measuring equipment and measuring equipment thereof
CN106827819A (en) * 2017-02-15 2017-06-13 长兴水木机电有限公司 Printer ink feeding device with refining function
CN106827819B (en) * 2017-02-15 2018-05-01 永春县裕顺工业设计有限公司 The printer ink feed device having a function screed

Similar Documents

Publication Publication Date Title
US5471873A (en) Densimeter
US20060248952A1 (en) A method and apparatus for fluid density sensing
US7278311B1 (en) Liquid level and density measurement device
US6301795B1 (en) Tilt sensor using magnet and magnetic sensor
US2637999A (en) Marine wave meter
JP2005037264A (en) Force-detecting sensor
US7199578B2 (en) Measurement device including a hall sensor disposed in a magnetic tube
US3964317A (en) Densimeter
US20130106400A1 (en) Proximity electric current sensing device and method
US20070229064A1 (en) Motion transducer for motion related to the direction of the axis of an eddy-current displacement sensor
US20090265132A1 (en) Device and method for determining the density of a fluid
US6998838B2 (en) Linear position sensor having enhanced sensing range to magnet size ratio
US7870793B1 (en) Transit time flow sensor with enhanced accuracy
JP2005257551A (en) Flowrate sensor
CN201382773Y (en) Far field double transmitting array casing damage instrument sensor
US3286523A (en) Liquid level gauge
CN101122639A (en) Austenitic stainless steel tube inner oxide magnetic damage-free detection device
CN102749266A (en) Fluid property measuring device and fluid density measuring method
RU2384484C1 (en) Fuel measurement capacitive system
US20130022075A1 (en) Temperature sensor having means for in-situ calibration
JPS5673317A (en) Thermal-type flow meter
Liu et al. High spatial resolution Hall sensor array for edge plasma magnetic field measurements
Asfour et al. A high dynamic range GMI current sensor
Di Sante Time domain reflectometry-based liquid level sensor
CN101563585A (en) Method and sensor arrangement for determining the position and/or change of position of a measured object relative to a sensor

Legal Events

Date Code Title Description
C06 Publication
EXSB Decision made by sipo to initiate substantive examination