公开(公告)号：MY173896A

公开(公告)日：2020-02-26

申请号：MYPI20090198

申请日：2009-01-16

Applicant: MIMOS BERHAD

Inventor： NABIHAH RAZALI ,  ROHANA MUSA ,  YUZMAN YUSOFF ,  MOHD SHAHIMAN SULAIMAN ,  HASMAYADI ABDUL MAJID ,  WEE LEONG SON ,  HANIF CHE LAH ,  ROHAYA ABDUL WAHAB ,  TAN KONG YEW ,  SHARIFAH SALEH ,  NAZALIZA OTHMAN ,  ROZAIMAH BAHARIM

Abstract: A readout interface circuit for a humidity sensor, particularly FEF sensor (10) is described. The readout interface circuit comprises a phase detector (20), a charge pump (30), a half wave rectifier (50) and two low pass filters (40, 42). The phase detector (20) is configured to produce output voltage proportional to the phase difference of signals from FEF sensor. The charge pump (30) is configured to control the current flow of phase detector to provide a linear output of phase detector. The first low pass filter (40) suppress noise level of charge pump output. The half wave rectifier (50) extracts the signal magnitude of sensor output. The second low pass filter (42) extract DC level of output of half wave rectifier. The output of first low pass filter (40) carries phase difference information of humidity and the output of second low pass filter (42) carries voltage output of humidity.

公开(公告)号：MY168005A

公开(公告)日：2018-10-10

申请号：MYPI20090197

申请日：2009-01-16

Applicant: MIMOS BERHAD

Inventor： NABIHAH RAZALI ,  SHARIFAH SALEH ,  NAZALIZA OTHMAN ,  MOHAMAD FAIZAL HASHIM ,  ROZAIMAH BAHARIM ,  AGUS SANTOSO TAMSIR ,  ROHANA MUSA ,  YUZMAN YUSOFF ,  MOHD SHAHIMAN SULAIMAN ,  HASMAYADI ABDUL MAJID ,  WEE LEONG SON ,  HANIF CHE LAH ,  ROHAYA ABDUL WAHAB ,  TAN KONG YEW

IPC: G01N5/02 ,  G01D5/243 ,  G01N27/00

Abstract: A SINGLE DIE SOLUTION OF AN INTEGRATED SENSOR SYSTEM (10) FOR READING SOIL MOISTURE IS DESCRIBED. THE INTEGRATED SENSOR SYSTEM (10) FOR A FRINGING ELECTRIC FIELD SENSOR (12) COMPRISES A READOUT INTERFACE CIRCUIT (14), AND AN ANALOG TO DIGITAL CONVERTER (16). THE SENSOR (12) MEASURES MOISTURE AND CREATES AN ANALOG ELECTRICAL SIGNAL WHICH MATCHES THE MOISTURE LEVEL. THE READOUT INTERFACE CIRCUIT (14) AMPLIFIES THE ANALOG SIGNAL, AND THE ANALOG TO DIGITAL CONVERTER CONVERTS THE ANALOG SIGNAL INTO DIGITAL SIGNAL. THE OUTPUT OF THE INTEGRATED SENSOR PROVIDES A DIGITAL OUTPUT OF MOISTURE READINGS. FIG. 1

公开(公告)号：MY173978A

公开(公告)日：2020-03-02

申请号：MYPI20090068

申请日：2009-01-08

Applicant: MIMOS BERHAD

Inventor： NABIHAH RAZALI ,  ROZAIMAH BAHARIM ,  ROHANA MUSA ,  YUZMAN YUSOFF ,  MOHD SHAHIMAN SULAIMAN ,  HASMAYADI ABDUL MAJID ,  WEE LEONG SON ,  HANIF CHE LAH ,  ROHAYA ABDUL WAHAB ,  TAN KONG YEW ,  SHARIFAH SALEH ,  NAZALIZA OTHMAN

Abstract: An adaptable readout interface circuit ( 1 0) comprising three operational amplifiers (11, 12, 13), a plurality of resistors (25, 26, 27), an adjustable gain resistor (15) and an offset voltage provider ( 16) is described. The first operational amplifier ( 11) is configured as an analog buffer wherein the output terminal provides feedback to its negative input terminal. An ion sensor (17) coupled to the positive terminal of the first operational amplifier. The second operational amplifier (12) is configured as an analog buffer wherein the output terminal provides feedback to its negative input terminal. A reference electrode (18) coupled to the positive terminal of the second operational amplifier. A gain resistor (15) is coupled to the negative terminal of the third operational amplifier to configure the third operational amplifier (13) as a gain amplifier. The output voltage of third operational amplifier provides an adjusted sensitivity and direct current level of ion sensor reading

公开(公告)号：MY159250A

公开(公告)日：2016-12-30

申请号：MYPI20085220

申请日：2008-12-22

Applicant: MIMOS BERHAD

Inventor： WEE LEONG SON ,  TAN KONG YEW ,  SHARIFAH SALEH ,  NAZALIZA OTHMAN ,  HASMAYADI ABDUL MAJID ,  ROZAIMAH BAHARIM ,  MOHD SHAHIMAN SULAIMAN ,  ROHANA MUSA ,  NABIHAH RAZALI ,  YUZMAN YUSOFF ,  HANIF CHE LAH ,  ROHAYA ABDUL WAHAB

IPC: G01N27/00

Abstract: AN INTEGRATED SENSOR AND SENSOR INTERFACING SYSTEM FOR MULTIPLE SENSORS IN MONITORING CROPS IS DESCRIBED. AN ION SENSITIVE FIELD EFFECT TRANSISTOR SENSOR (12) IS USED FOR MONITORING SOIL PH. A FRINGING ELECTRIC FIELD SENSOR (14) IS USED FOR MONITORING SOIL MOISTURE. A PLURALITY OF ION SELECTIVE ELECTRODE SENSORS (16) IS USED FOR MONITORING ION CONCENTRATIONS. A PLURALITY OF READOUT INTERFACE CIRCUITS (22, 24, 26) COUPLED TO THE SENSORS TO CONDITION THE SENSOR READING. AN ANALOG MULTIPLEXER (18) IS INTERFACED WITH ALL ABOVE MENTIONED READOUT INTERFACE CIRCUIT AND PROGRAMMED TO SELECT THE DESIRED SENSOR TO BE READ AT DIFFERENT INTERVALS. AN ANALOG TO DIGITAL CONVERTER (20) CONVERTS THE ANALOG OUTPUT OF MULTIPLEXER INTO DIGITAL SIGNAL, WHEREIN THE OUTPUT OF ANALOG TO DIGITAL CONVERTER PROVIDES READINGS FOR MULTIPLE SENSORS.

公开(公告)号：WO2011043641A2

公开(公告)日：2011-04-14

申请号：PCT/MY2010000188

申请日：2010-09-30

Applicant: MIMOS BERHAD ,  YUZMAN YUSOFF ,  ROHANA MUSA ,  WEE LEONG SON ,  NABIHAH RAZALI ,  NAZALIZA OTHMAN ,  ROZAIMAH BAHARIM ,  HASMAYADI ABDUL MAJID ,  ROHAYA ABDUL WAHAB ,  SHARIFAH SALEH ,  HANIF CHE LAH ,  TAN KONG YEW ,  MOHD SHAHIMAN SULAIMAN

Inventor： YUZMAN YUSOFF ,  ROHANA MUSA ,  WEE LEONG SON ,  NABIHAH RAZALI ,  NAZALIZA OTHMAN ,  ROZAIMAH BAHARIM ,  HASMAYADI ABDUL MAJID ,  ROHAYA ABDUL WAHAB ,  SHARIFAH SALEH ,  HANIF CHE LAH ,  TAN KONG YEW ,  MOHD SHAHIMAN SULAIMAN

IPC: H03M1/12

CPC classification number: H03M1/1225 ,  H03M1/0695 ,  H03M1/168 ,  H03M1/442

Abstract: A shared gain-stage circuit of a pipelined analog-to-digital converter (ADC) that allows for sharing at least one multiplying digital-to-analog converter (MDAC) (102) and at least one sub-ADC (104) between two successive stages. The at least one MDAC (102) comprises an amplifier (106), a first feedback capacitor (108), a second feedback capacitor (110), at least two sampling capacitors (112), a plurality of reference voltages and a sub- DAC (114).

Abstract translation: 流水线模数转换器（ADC）的共享增益级电路允许共享至少一个乘法数模转换器（MDAC）（102）和至少一个子ADC（104） 连续的阶段。 所述至少一个MDAC（102）包括放大器（106），第一反馈电容器（108），第二反馈电容器（110），至少两个采样电容器（112），多个参考电压和子DAC （114）。