CN203630008U - System for remotely and automatically detecting abrasive particles of lubricating oil - Google Patents
System for remotely and automatically detecting abrasive particles of lubricating oil Download PDFInfo
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- CN203630008U CN203630008U CN201320715809.3U CN201320715809U CN203630008U CN 203630008 U CN203630008 U CN 203630008U CN 201320715809 U CN201320715809 U CN 201320715809U CN 203630008 U CN203630008 U CN 203630008U
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- lubricating oil
- microprocessor
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Abstract
The utility model relates to a system for remotely and automatically detecting abrasive particles of lubricating oil. The system comprises an upper computer and a capacitive sensor, and also comprises a measurement circuit for detecting abrasive particles of lubricating oil, wherein the measurement circuit for detecting abrasive particles of lubricating oil comprises a general packet radio service (GPRS) wireless module, a microprocessor, a micro capacitance detection chip and a transceiver; the upper computer and the GPRS wireless module perform data transmission through a wireless network; the GPRS wireless module is sequentially connected with the microprocessor and the micro capacitance detection chip through the transceiver; the capacitive sensor is connected with the micro capacitance detection chip through a shielding line. The system has the beneficial effects that an annular plate capacitive sensor in a differential structure is adopted, and the measurement sensitive field distribution is uniform; an AD7747 micro capacitance detection chip is adopted on the measurement part, and the measurement accuracy and reliability are improved; remote measurement is realized by adopting the GPRS wireless module and the upper computer; the abrasive particles of lubricating oil are remotely and controllably measured at low cost.
Description
Technical field
The utility model relates to a kind of system that detects lubricating oil abrasive particle, and particularly a kind of remote auto detects the system of lubricating oil abrasive particle.
Background technology
The conventional plane-parallel capacitor of current lubricating oil abrasive particle detection system capacitive transducer or circular arc plate capacitors, measure sensitivity distribution inequality; Measure portion circuit mostly adopts the circuit of discrete component composition, and measuring accuracy is poor, and reliability is low; Can only realize close-in measurement.
Summary of the invention
In view of the deficiency that prior art exists, the system that the utility model provides a kind of remote auto to detect lubricating oil abrasive particle, the ring-type polar-plate-type capacitive transducer of employing differential configuration, measures sensitivity distribution even; Adopt GPRS wireless module and host computer to realize remote measurement.
The utility model for achieving the above object, the technical scheme adopting is: a kind of remote auto detects the system of lubricating oil abrasive particle, comprise host computer, capacitive transducer, it is characterized in that: also comprise the metering circuit that detects lubricating oil abrasive particle, the metering circuit of described detection lubricating oil abrasive particle comprises, GPRS wireless module, microprocessor, micro-capacitance detecting chip, transceiver, described host computer and GPRS wireless module carry out data transmission by wireless network, GPRS wireless module by transceiver successively with microprocessor, micro-capacitance detecting chip connects, capacitive transducer is connected with micro-capacitance detecting chip by shielding line.
The beneficial effects of the utility model are: adopt the ring-type polar-plate-type capacitive transducer of differential configuration, measure sensitivity distribution even; Adopt GPRS wireless module and host computer to realize remote measurement; Low cost, remote controlled measurement lubricating oil abrasive particle are realized.
Accompanying drawing explanation
Fig. 1 is that circuit of the present utility model connects block diagram;
Fig. 2 is the metering circuit schematic diagram that the utility model detects lubricating oil abrasive particle;
Fig. 3 is the metering circuit measure portion process flow diagram that the utility model detects lubricating oil abrasive particle.
Embodiment
As shown in Figure 1, 2, remote auto detects the system of lubricating oil abrasive particle, comprise host computer, capacitive transducer, also comprise the metering circuit that detects lubricating oil abrasive particle, the metering circuit that detects lubricating oil abrasive particle comprises, GPRS wireless module, microprocessor, micro-capacitance detecting chip, transceiver, host computer and GPRS wireless module carry out data transmission by wireless network, and GPRS wireless module and microprocessor adopt asynchronous communication means through transceiver; Microprocessor and micro-capacitance detecting chip interface agreement are I
2c universal serial bus; Micro-capacitance detecting chip is connected with capacitive transducer.
The metering circuit that detects lubricating oil abrasive particle is specifically connected to: 16 pin of micro-capacitance detecting chip are leaded up to resistance R 2 and resistance R 1, capacitor C 1, C2, one end of C3, 14 pin of micro-capacitance detecting chip connect and meet power supply VCC, another road is connected with 29 pin of microprocessor, 1 pin is connected with 31 pin of microprocessor and the other end of resistance R 1, 2 pin are connected with 20 pin of microprocessor, 13 pin and capacitor C 1, C2, the other end of C3 connects and ground connection, 7 pin, 8 pin are connected with capacitive transducer by shielding line, 3 pin connect shielding line crust, 34 pin of microprocessor, 35 pin respectively with 10 pin of transceiver, 9 pin connect, 7 pin of transceiver, 8 pin are connected with GPRS wireless module RXD port and TXD port respectively.
Capacitive transducer adopts the ring-type polar-plate-type capacitive transducer of differential configuration, and micro-capacitance detecting chip adopts AD7747 high-accuracy capacitor digital conversion chip, and microprocessor adopts MSP430F169 chip, and transceiver adopts MAX3232ESE chip.
As shown in Figure 3, detect the measuring method of the metering circuit of lubricating oil abrasive particle, step is as follows:
The first step, first carries out the initialization of clock, timer and serial ports to microprocessor;
Second step, judges whether the sense command from host computer;
The 3rd step, if having, the micro-capacitance detecting chip of initialization, makes it normally work by request for utilization; If no, return to the sense command of second step wait host computer;
The 4th step, reads the value of micro-capacitance detecting chip status register, judges whether conversion completes;
The 5th step, if complete, microprocessor reads transformation result from the numerical value register of micro-capacitance detecting chip; If do not complete, return to the 4th step, wait converts;
The 6th step, returns to host computer by transformation result, returns to the sense command next time of rear wait host computer.
Principle of work: the ring-type polar-plate-type capacitive transducer that adopts differential configuration, electric field line between ring-type pole plate is evenly inner between pole plate, and outside comparatively disperses, and the path that lubricating oil abrasive particle passes through is all along electric field inside, so there is not edge effect, the sensitivity distribution of measurement is even; The micro-capacitance detecting chip volume of AD7747 is little, and inside has powerful electric capacity/digital conversion function, and electric capacity is directly changed into digital quantity from analog quantity, and measuring accuracy and reliability are high; Introduce GPRS wireless module, solved can only limited distance transmission problem, realized host computer remote auto and detected lubricating oil abrasive particle.
Claims (2)
1. the system of a remote auto detection lubricating oil abrasive particle, comprise host computer, capacitive transducer, it is characterized in that: also comprise the metering circuit that detects lubricating oil abrasive particle, the metering circuit of described detection lubricating oil abrasive particle comprises, GPRS wireless module, microprocessor, micro-capacitance detecting chip, transceiver, described host computer and GPRS wireless module carry out data transmission by wireless network, GPRS wireless module by transceiver successively with microprocessor, micro-capacitance detecting chip connects, capacitive transducer is connected with micro-capacitance detecting chip by shielding line, described capacitive transducer adopts the ring-type polar-plate-type capacitive transducer of differential configuration.
2. remote auto according to claim 1 detects the system of lubricating oil abrasive particle, it is characterized in that: the metering circuit of described detection lubricating oil abrasive particle is specifically connected to: 16 pin of micro-capacitance detecting chip are leaded up to resistance R 2 and resistance R 1, capacitor C 1, C2, one end of C3, 14 pin of micro-capacitance detecting chip connect and meet power supply VCC, another road is connected with 29 pin of microprocessor, 1 pin is connected with 31 pin of microprocessor and the other end of resistance R 1, 2 pin are connected with 20 pin of microprocessor, 13 pin and capacitor C 1, C2, the other end of C3 connects and ground connection, 7 pin, 8 pin are connected with capacitive transducer by shielding line, 3 pin connect shielding line crust, 34 pin of microprocessor, 35 pin respectively with 10 pin of transceiver, 9 pin connect, 7 pin of transceiver, 8 pin are connected with GPRS wireless module RXD port and TXD port respectively, micro-capacitance detecting chip adopts AD7747 high-accuracy capacitor digital conversion chip, and microprocessor adopts MSP430F169 chip, and transceiver adopts MAX3232ESE chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320715809.3U CN203630008U (en) | 2013-11-14 | 2013-11-14 | System for remotely and automatically detecting abrasive particles of lubricating oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320715809.3U CN203630008U (en) | 2013-11-14 | 2013-11-14 | System for remotely and automatically detecting abrasive particles of lubricating oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203630008U true CN203630008U (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320715809.3U Expired - Lifetime CN203630008U (en) | 2013-11-14 | 2013-11-14 | System for remotely and automatically detecting abrasive particles of lubricating oil |
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| CN (1) | CN203630008U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558128A (en) * | 2013-11-14 | 2014-02-05 | 中环天仪股份有限公司 | System for remotely and automatically detecting lubrication oil abrasive particles |
-
2013
- 2013-11-14 CN CN201320715809.3U patent/CN203630008U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558128A (en) * | 2013-11-14 | 2014-02-05 | 中环天仪股份有限公司 | System for remotely and automatically detecting lubrication oil abrasive particles |
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