CN202853841U - Bus type multichannel pressure acquisition device - Google Patents
Bus type multichannel pressure acquisition device Download PDFInfo
- Publication number
- CN202853841U CN202853841U CN 201220580634 CN201220580634U CN202853841U CN 202853841 U CN202853841 U CN 202853841U CN 201220580634 CN201220580634 CN 201220580634 CN 201220580634 U CN201220580634 U CN 201220580634U CN 202853841 U CN202853841 U CN 202853841U
- Authority
- CN
- China
- Prior art keywords
- pin
- chip microcomputer
- housing
- pressure
- acquisition device
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to a bus type multichannel pressure acquisition device which can be used to effectively solve detection problems with a pressure system. The bus type multichannel pressure acquisition device adopts the following technical scheme: the bus type multichannel pressure acquisition device comprises a housing and a detection circuit; the housing is provided with an upper cover, and one end of the housing is installed with an external socket; the detection circuit is arranged in the housing, and the detection circuit comprises a pressure sensor which is arranged in the housing, a single chip microcomputer, a power module and a CAN transceiver module, wherein the single chip microcomputer, the power module and the CAN transceiver module are installed on a circuit board, the pressure sensor is connected with the input end of the single chip microcomputer, the output end of the single chip microcomputer is connected with the input end of the CAN transceiver module, and the power module is connected with the power supply end of the pressure sensor, the power supply end of the single chip microcomputer and the power supply end of the CAN transceiver module separately. According to the utility model, advantages of simple, novel and unique structure, convenient utilization and good effects can be realized, the device can be effectively used to monitor the pressure of a vehicle engine system, and at the same time, the pressure of ten portions of an engine can be detected, and pressure signals are transmitted to an upper computer through the CAN transceiver module bus, so the real-time performance and the reliability of a pressure detection system can be greatly improved.
Description
Technical field
The utility model relates to electrical equipment, particularly a kind of bus type multichannel pressure acquisition device.
Background technology
Pressure is that Industry Control and automotive power are controlled requisite parameter.Traditional pressure detection mode mainly is by pressure transducer pressure signal to be become resistance signal, voltage or current signal.There are the shortcomings such as function is simple, precision is low, long-distance transmissions poor reliability in this traditional detection mode.The development of modern monitoring technique is had higher requirement to the detection of pressure system.
Summary of the invention
For above-mentioned situation, for overcoming the defective of prior art, the purpose of the utility model just provides a kind of bus type multichannel pressure acquisition device, can effectively solve the test problems to pressure system.
The technical scheme that the utility model solves is, comprise housing and testing circuit, loam cake is arranged on the housing, one end is equipped with external socket, testing circuit places in the housing, described testing circuit comprises and is contained in the pressure transducer in the housing and is contained in single-chip microcomputer, power module and CAN transceiver module on the wiring board, pressure transducer links to each other with the input end of single-chip microcomputer, the output terminal of single-chip microcomputer links to each other with the input end of CAN transceiver module, power module connects respectively the feeder ear of pressure transducer, single-chip microcomputer, CAN transceiver module, during use, pressure transducer links to each other with measured medium.
The utility model is simple in structure, novel unique, easy to use, effective, can be effective to the pressure of monitor vehicle engine system, detect simultaneously the pressure at ten positions of engine, and pressure signal is passed through CAN transceiver module bus transfer to host computer, greatly improved real-time and the reliability of pressure detecting system.
Description of drawings
Fig. 1 is structural profile front view of the present utility model.
Fig. 2 is circuit block diagram of the present utility model.
Fig. 3 is the power module circuitry schematic diagram of this practical parental type.
Fig. 4 is one-chip computer module circuit theory diagrams of the present utility model.
Fig. 5 is CAN transceiver module circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.
By Fig. 1,2 provide, the utility model comprises housing and testing circuit, loam cake 2 is arranged on the housing 1, one end is equipped with external socket 3, testing circuit places in the housing, described testing circuit comprises and is contained in the pressure transducer 9 in the housing and is contained in single-chip microcomputer 12 on the wiring board, power module 10 and CAN transceiver module 13, pressure transducer links to each other with the input end of single-chip microcomputer, the output terminal of single-chip microcomputer links to each other with the input end of CAN transceiver module, power module connects respectively pressure transducer, single-chip microcomputer, the feeder ear of CAN transceiver module, during use, pressure transducer links to each other with measured medium 11.
In order to guarantee result of use, between described external socket 3 and the pressure transducer 9 wave filter 8 is housed, wiring board 5 is equipped with through pillar 6 in pressure transducer top, and single-chip microcomputer, CAN transceiver module, power module are contained on the wiring board;
There is seal gasket 7 described pressure transducer bottom between wiring board 5 and pressure transducer top on O RunddichtringO 10 is contained in bottom surface in the housing; Described loam cake 2 is connected and fixed through screw 4 with housing 1;
Described single-chip microcomputer is the one-chip computer module U2 of PIC18F4580QFP, 32 pin of single-chip microcomputer are through the light emitting diode L1 ground connection of resistance R 23 and series connection, between 30 pin of single-chip microcomputer, 31 pin crystal oscillator ZT is housed, and through capacitor C 5, C6 ground connection, 18 pin meet capacitor C 4, resistance R 3, diode D1 through resistance R 2, capacitor C 4 ground connection, resistance R 3, diode D1 and joining power+5V;
Described power module comprises integration module U4(model 78M05, three terminal regulator) and integration module U3(model 21009), the 2 pin ground connection of integration module U4,1 pin meets capacitor C 1 one ends, diode D2 negative pole one end, capacitor C 19 1 ends and power supply 12V, capacitor C 19, diode D2, capacitor C 1 earth, 3 pin of integration module U4 meet direct earth capacitance C2, C3 and power supply+5V in parallel, 1 pin of integration module U3,4 pin ground connection, 2 pin meet power supply+5V, and 6 pin connect direct earth capacitance C16, C17 in parallel and 22 pin (AN3 pin) of single-chip microcomputer U2;
The transmitting-receiving integrated package U1 that described CAN transceiver module is model 82C250, through the minus earth of ground connection diode D3, D4,8 pin are through resistance R 1 ground connection respectively for 6 pin, 7 pin of transmitting-receiving integrated package U1,2 pin ground connection, 3 pin meet power supply 5V, and through capacitor C 25 ground connection, 4 pin connect 11 pin of single-chip microcomputer U2.
Working condition of the present utility model is, whole harvester partly is comprised of housing, pressure core body, wave filter, wiring board, loam cake etc., pressure transducer is at first measured system pressure, then signal is delivered to Chip Microcomputer A N mouth and carried out A/D conversion, data operation, the data communication device after the computing is crossed the CAN transceiver module and is passed to host computer.Power module provides accurate reference power supply for pressure transducer, single-chip microcomputer, CAN.
Wave filter mainly plays anti-electromagnetic interference (EMI) conduction, and the metal sealing rubber cushion can play the effect of sealing, has strengthened again the anti-electromagnetic interference performance of device, has also reduced the external radiation interference of device.
Shell adopts aluminium alloy, and namely firm weight is light again.Connector and gib screw, bullet pad all adopt stainless steel material, and be namely corrosion-resistant attractive in appearance again.
The utility model takes full advantage of microprocessor and bussing technique, and it, detects 10 road tested pressure sources in conjunction with novel digital modulate circuit, CAN bus circuit in real time take existing pressure-sensing device as detecting the basis.
This pressure acquisition device has broken away from that the conventional pressure sensor wiring is complicated, the weakness of signal long-distance transmissions poor reliability, integrate measurement, conditioning, bus transfer, reduced in a large number the wiring of pressure system, so that system is compacter, attractive in appearance, install, safeguard efficient and convenient, greatly improved real-time and the reliability of pressure detecting system.
Claims (7)
1. bus type multichannel pressure acquisition device, comprise housing and testing circuit, it is characterized in that, loam cake (2) is arranged on the housing (1), one end is equipped with external socket (3), testing circuit places in the housing, described testing circuit comprises and is contained in the pressure transducer (9) in the housing and is contained in single-chip microcomputer (12) on the wiring board, power module (10) and CAN transceiver module (13), pressure transducer links to each other with the input end of single-chip microcomputer, the output terminal of single-chip microcomputer links to each other with the input end of CAN transceiver module, and power module connects respectively pressure transducer, single-chip microcomputer, the feeder ear of CAN transceiver module.
2. bus type multichannel pressure acquisition device according to claim 1, it is characterized in that, between described external socket (3) and the pressure transducer (9) wave filter (8) is housed, wiring board (5) is equipped with through pillar (6) in pressure transducer top, and single-chip microcomputer, CAN transceiver module, power module are contained on the wiring board.
3. bus type multichannel pressure acquisition device according to claim 1 is characterized in that, there is seal gasket (7) described pressure transducer bottom between wiring board (5) and pressure transducer top on O RunddichtringO (10) is contained in bottom surface in the housing.
4. bus type multichannel pressure acquisition device according to claim 1 is characterized in that, described loam cake (2) is connected and fixed through screw (4) with housing (1).
5. bus type multichannel pressure acquisition device according to claim 1, it is characterized in that, 32 pin of described single-chip microcomputer U2 are through the light emitting diode L1 ground connection of resistance R 23 and series connection, between 30 pin of single-chip microcomputer, 31 pin crystal oscillator ZT is housed, and through capacitor C 5, C6 ground connection, 18 pin meet capacitor C 4, resistance R 3, diode D1 through resistance R 2, capacitor C 4 ground connection, resistance R 3, diode D1 and joining power+5V.
6. bus type multichannel pressure acquisition device according to claim 1, it is characterized in that, described power module comprises integration module U4 and integration module U3, the 2 pin ground connection of integration module U4,1 pin meets capacitor C 1 one ends, diode D2 negative pole one end, capacitor C 19 1 ends and power supply 12V, capacitor C 19, diode D2, capacitor C 1 earth, 3 pin of integration module U4 meet direct earth capacitance C2, C3 and power supply+5V in parallel, 1 pin of integration module U3,4 pin ground connection, 2 pin meet power supply+5V, and 6 pin connect direct earth capacitance C16, C17 in parallel and 22 pin of single-chip microcomputer U2.
7. bus type multichannel pressure acquisition device according to claim 1, it is characterized in that, described CAN transceiver module is transmitting-receiving integrated package U1,6 pin of transmitting-receiving integrated package U1,7 pin are respectively through the minus earth of ground connection diode D3, D4,8 pin are through resistance R 1 ground connection, 2 pin ground connection, and 3 pin meet power supply 5V, and through capacitor C 25 ground connection, 4 pin connect 11 pin of single-chip microcomputer U2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220580634 CN202853841U (en) | 2012-11-07 | 2012-11-07 | Bus type multichannel pressure acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220580634 CN202853841U (en) | 2012-11-07 | 2012-11-07 | Bus type multichannel pressure acquisition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202853841U true CN202853841U (en) | 2013-04-03 |
Family
ID=47985025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220580634 Expired - Lifetime CN202853841U (en) | 2012-11-07 | 2012-11-07 | Bus type multichannel pressure acquisition device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202853841U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478375A (en) * | 2017-07-24 | 2017-12-15 | 中国北方车辆研究所 | Bus type multichannel pressure acquisition sensing device |
-
2012
- 2012-11-07 CN CN 201220580634 patent/CN202853841U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478375A (en) * | 2017-07-24 | 2017-12-15 | 中国北方车辆研究所 | Bus type multichannel pressure acquisition sensing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202837403U (en) | Portable tester for mud resistivity | |
| CN103900928B (en) | Full-automatic shale gas content testing analyzer | |
| CN203564234U (en) | Electrocardiosignal acquisition device based on USB (Universal Series Bus) transmission | |
| CN201016859Y (en) | Electric vehicle mounted testing device | |
| CN201035075Y (en) | EDA9133 synthetic electric power monitoring instrument | |
| CN102200562B (en) | Power-supply ground detection device | |
| CN201364171Y (en) | Digital composite sensor | |
| CN202853841U (en) | Bus type multichannel pressure acquisition device | |
| CN217760960U (en) | Indicator diagram and vibration data testing device for beam-pumping well | |
| CN201335718Y (en) | Bubble-type water gauge | |
| CN207036280U (en) | A kind of novel sensor | |
| CN202947986U (en) | Portable carrier catalysis methane detection alarm apparatus | |
| CN202110400U (en) | Portable test controller for indicator diagram of marine diesel | |
| CN202486859U (en) | Vehicle-mounted data recorder of vehicle gearbox | |
| CN203607597U (en) | Device for conversion connection of double-core wave detector with four-core socket and two-core socket | |
| CN205176148U (en) | Portable electromagnetic radiation measures appearance | |
| CN203812059U (en) | A remote measurement and control terminal apparatus | |
| CN209961797U (en) | Function tester for rotation speed sensor of electric control engine | |
| CN203310850U (en) | Signal conditioning device of mining vibration acceleration sensor | |
| CN210270114U (en) | Fault detector for heavy-duty mechanized bridge erection system | |
| Ji et al. | GPRS-based data real-time transmission system of water-quality monitoring | |
| CN207439444U (en) | Transmission sensors detector | |
| CN202002991U (en) | Multifunctional inspection instrument for electric energy meter | |
| CN205283735U (en) | Security protection control display terminal and control system thereof | |
| CN206038040U (en) | Multiport refrigerant caliber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |