CN201731887U

CN201731887U - Cascade unit for sensors

Info

Publication number: CN201731887U
Application number: CN 201020523209
Authority: CN
Inventors: 荆元祥; 刘琳辉; 宋大维; 苍晓羽; 刘琦
Original assignee: No703 Inst Of China Chip Heavy Ind Group Co
Current assignee: No703 Inst Of China Chip Heavy Ind Group Co; 703th Research Institute of CSIC
Priority date: 2010-09-09
Filing date: 2010-09-09
Publication date: 2011-02-02
Anticipated expiration: 2020-09-09

Abstract

The utility model discloses a cascade unit for sensors, which relates to a cascade unit and solves the problems that the existing cascade unit has big error in the measuring result due to the shifting of the acting point of force caused by inconsistency of performances of various sensors, and is easily subjected to electromagnetic interference, thus enabling the obtained data to be unstable. As for the cascade unit, a No.1 electric connector, four No.2 electric connectors and two No.3 connectors are all fixed on the edge of a shell; a circuit board is fixed inside the shell; and an upper cover of the shell seals the opening of the shell and is electrically connected with the shell. The cascade unit for sensors is suitable for being used for cascade connection of sensors.

Description

The sensor cascade unit

Technical field

The utility model relates to a kind of cascade unit.

Background technology

At present, the sensor cascade unit of developing both at home and abroad and producing is divided into three kinds of tandem, parallel and series parallel types.Wherein the tandem cascade unit adopts direct current bridge to realize that each sensor bridge needs separate bridge power supply, and the complexity of system is higher; Simultaneously, increased the total output impedance of sensor after the series connection, brought interference easily, caused measurement result error to occur, and output valve to be carried out addition when series connection, the also corresponding addition of error, the error of measurement result is bigger.Parallel cascade unit only uses a reference power source, and system architecture is comparatively simple, and output impedance is less; When signal was in parallel, the thought that coincidence senser merges made error cancel out each other, and precision is higher, but its output amplitude is less.Total output voltage of the electric bridge of series parallel type cascade unit or electric current are the twice of single bridge output.Three kinds of above-mentioned cascade systems all are easier to be subjected to electromagnetic interference (EMI) in signals transmission, and then cause display device data presented instability.

The utility model content

The utility model is in order to solve existing cascade unit because the measuring result error that the inconsistent point of force application skew that causes of each sensor performance produces is big, and be vulnerable to electromagnetic interference (EMI) and cause the data problem of unstable that obtains, thereby provide a kind of novel sensor cascade unit.

The sensor cascade unit, it comprises circuit board, an electric connector, four No. two electric connectors and two No. three electric connectors, and the element on the circuit board comprises No. one to ten No. two resistance, a potentiometer, No. two potentiometers, No. three potentiometers, No. four potentiometers, No. five potentiometers and No. six potentiometers; 1 pin of an electric connector is connected with 2 pin, and 2 pin of an electric connector are connected with an end of an end of the adjustable end of an end of an end of the adjustable end of an end of an end of a potentiometer, No. two potentiometers, No. two potentiometers, No. three potentiometers, No. four potentiometers, No. four potentiometers, No. five potentiometers, No. six potentiometers and the adjustable end of No. six potentiometers simultaneously; The other end of the other end of the adjustable end of the other end of a potentiometer and a potentiometer, the other end of No. two potentiometers, No. three potentiometers and the adjustable end of No. three potentiometers, No. four potentiometers is connected with 1 pin of No. two electric connectors respectively; The adjustable end of the other end of the other end of No. five potentiometers, No. six potentiometers and No. six potentiometers is connected with 1 pin of two No. three electric connectors respectively; 3 pin of an electric connector are connected with 2 pin of four No. two electric connectors and 2 pin of two No. three electric connectors simultaneously; 4 pin of an electric connector are connected with 3 pin of four No. two electric connectors and 3 pin of two No. three electric connectors simultaneously; 5 pin of an electric connector are connected with an end of an end of an end of No. two resistance, No. four resistance, No. six resistance and an end of No. eight resistance simultaneously; The other end of the other end of the other end of the other end of No. two resistance, No. four resistance, No. six resistance and No. eight resistance is connected with 4 pin of four No. two electric connectors respectively; 6 pin of an electric connector are connected with an end of an end of an end of a resistance, No. three resistance, No. five resistance and an end of No. seven resistance simultaneously; The other end of the other end of the other end of the other end of a described resistance, No. three resistance, No. five resistance and No. seven resistance is connected with 5 pin of four No. two electric connectors respectively; 7 pin of an electric connector are connected with an end of No. ten resistance and an end of ten No. two resistance simultaneously; The other end of the other end of No. ten resistance and ten No. two resistance 4 pin of two No. three electric connectors respectively is connected; 8 pin of an electric connector are connected with an end of No. nine resistance and an end of ride on Bus No. 11 resistance simultaneously; The other end of the other end of No. nine resistance and ride on Bus No. 11 resistance is connected with 5 pin of two No. three electric connectors simultaneously.

It also comprises housing and case top lid, and an electric connector, four No. two electric connectors and two No. three electric connectors all are fixed on the edge of housing; Circuit board is fixed on enclosure interior, and case top lid is electrically connected with the opening sealing of housing and with housing.

Beneficial effect: present embodiment is transformed to one tunnel measuring-signal by the potentiometer on the circuit board respectively with the measuring-signal of 4 tunnel measuring-signal and 2 tunnel, has eliminated the signal transmission error and can guarantee that signal reliably is sent to and measured the display device place; The connection mode that the utility model adopts has reduced because the point of force application that each sensor performance is inconsistent and alignment error causes is offset the error that produces, and measuring accuracy is higher; And can prevent electromagnetic interference (EMI) effectively, the measurement data of acquisition is stable.

Description of drawings

Fig. 1 is a structural representation of the present utility model; Fig. 2 is a circuit connection diagram of the present utility model.

Embodiment

Embodiment one, this embodiment is described in conjunction with Fig. 1 and Fig. 2, the sensor cascade unit, it comprises circuit board 4, electric connector 51, four No. two electric connectors 52 and two No. three electric connectors 53, and the element on the circuit board 4 comprises No. one to ten No. two resistance, potentiometer W1, No. two potentiometer W2, No. three potentiometer W3, No. four potentiometer W4, No. five potentiometer W5 and No. six potentiometer W6; 1 pin of an electric connector 51 is connected with 2 pin, and 2 pin of an electric connector 51 are connected with the end of the end of the adjustable end of the end of the end of the adjustable end of the end of the end of a potentiometer W1, No. two potentiometer W2, No. two potentiometer W2, No. three potentiometer W3, No. four potentiometer W4, No. four potentiometer W4, No. five potentiometer W5, No. six potentiometer W6 and the adjustable end of No. six potentiometer W6 simultaneously; The other end of the other end of the adjustable end of the other end of a potentiometer W1 and a potentiometer W1, the other end of No. two potentiometer W2, No. three potentiometer W3 and the adjustable end of No. three potentiometer W3, No. four potentiometer W4 is connected with 1 pin of No. two electric connectors 52 respectively; The adjustable end of the other end of the other end of No. five potentiometer W5, No. six potentiometer W6 and No. six potentiometer W6 is connected with 1 pin of two No. three electric connectors 53 respectively; 3 pin of an electric connector 51 are connected with 2 pin of four No. two

electric connectors

52 and 2 pin of two No. three electric connectors 53 simultaneously; 4 pin of an electric connector 51 are connected with 3 pin of four No. two electric connectors 52 and 3 pin of two No. three electric connectors 53 simultaneously; 5 pin of an electric connector 51 are connected with an end of an end of an end of No. two resistance R 2, No. four resistance R 4, No. six resistance R 6 and an end of No. eight resistance R 8 simultaneously; The other end of the other end of the other end of the other end of No. two resistance R 2, No. four resistance R 4, No. six resistance R 6 and No. eight resistance R 8 is connected with 4 pin of four No. two electric connectors 52 respectively; 6 pin of an electric connector 51 are connected with an end of an end of an end of a resistance R 1, No. three resistance R 3, No. five resistance R 5 and an end of No. seven resistance R 7 simultaneously; The other end of the other end of the other end of the other end of a described resistance R 1, No. three resistance R 3, No. five resistance R 5 and No. seven resistance R 7 is connected with 5 pin of four No. two electric connectors 52 respectively; 7 pin of an electric connector 51 are connected with an end of No. ten resistance R 10 and an end of ten No. two resistance R 12 simultaneously; The other end of the other end of No. ten resistance R 10 and ten No. two resistance R 12 4 pin of two No. three electric connectors 53 respectively is connected; 8 pin of an electric connector 51 are connected with an end of No. nine resistance R 9 and an end of ride on Bus No. 11 resistance R 11 simultaneously; The other end of the other end of No. nine resistance R 9 and ride on Bus No. 11 resistance R 11 is connected with 5 pin of two No. three electric connectors 53 simultaneously.

The difference of embodiment two, this embodiment and embodiment one described sensor cascade unit is, it comprises that also housing 1 and 2, numbers electric connectors of case top lid 51, four No. two electric connectors 52 and two No. three electric connectors 53 all are fixed on the edge of housing 1; Circuit board 4 is fixed on housing 1 inside, and case top lid 2 is electrically connected with the opening sealing of housing 1 and with housing 1.

The preferred anti-environment high density small circular of electric connector of installing on the housing 1 of present embodiment connects separation connector fast, is used to strengthen the shielding and the sealing of cascade unit.Four No. two available 5 cores of electric connector 52 signal input interfaces or 6 core interfaces, No. one electric connector 51 signal output interfaces can be selected 7 core interfaces for use.

The difference of the sensor cascade unit that embodiment three, embodiment and embodiment two are stated is, it also comprises conductive rubber pad 6, and a described electric connector 51, four No. two electric connectors 52 and two No. three electric connectors 53 all are fixed on the edge of housing 1 by conductive rubber pad 6.

The difference of the sensor cascade unit that embodiment four, embodiment and embodiment three are stated is that it also comprises conductive rubber strip 7, seals and is electrically connected by conductive rubber strip 7 between described housing 1 and the case top lid 2.

In the present embodiment, the conductive rubber strip of installing on the housing 17 adopts the design of liner overlap joint.Between housing 1 and case top lid 2, use the wire mesh pad lap seal seam crossing of round belt rubber core, the sealing and the EMI interference shielding of connector shell is provided.At the screw tightening place, also use packing ring to shield.Gasket material is selected good springiness, anticorrosive and low resistivity material, and reaching not only can electromagnetic screen but also can water vapor seal and the effect of slip-off preventing.

Claims

1. sensor cascade unit, it is characterized in that: it comprises circuit board (4), an electric connector (51), four No. two electric connectors (52) and two No. three electric connectors (53), and the element on the circuit board (4) comprises resistance, a potentiometer (W1), No. two potentiometers (W2), No. three potentiometers (W3), No. four potentiometers (W4), No. five potentiometers (W5) and No. six potentiometers (W6) No. one to ten No. two; 1 pin of an electric connector (51) is connected with 2 pin, and 2 pin of an electric connector (51) are connected with an end of a potentiometer (W1), an end of No. two potentiometers (W2), the adjustable end of No. two potentiometers (W2), an end of No. three potentiometers (W3), an end of No. four potentiometers (W4), the adjustable end of No. four potentiometers (W4), an end of No. five potentiometers (W5), an end of No. six potentiometers (W6) and the adjustable end of No. six potentiometers (W6) simultaneously; The other end of the other end of the adjustable end of the other end of a potentiometer (W1) and a potentiometer (W1), the other end of No. two potentiometers (W2), No. three potentiometers (W3) and the adjustable end of No. three potentiometers (W3), No. four potentiometers (W4) is connected with 1 pin of No. two electric connectors (52) respectively; The adjustable end of the other end of the other end of No. five potentiometers (W5), No. six potentiometers (W6) and No. six potentiometers (W6) is connected with 1 pin of two No. three electric connectors (53) respectively; 3 pin of an electric connector (51) are connected with 2 pin of four No. two electric connectors (52) and 2 pin of two No. three electric connectors (53) simultaneously; 4 pin of an electric connector (51) are connected with 3 pin of four No. two electric connectors (52) and 3 pin of two No. three electric connectors (53) simultaneously; 5 pin of an electric connector (51) are connected with an end of No. two resistance (R2), an end of No. four resistance (R4), an end of No. six resistance (R6) and an end of No. eight resistance (R8) simultaneously; The other end of the other end of the other end of the other end of No. two resistance (R2), No. four resistance (R4), No. six resistance (R6) and No. eight resistance (R8) is connected with 4 pin of four No. two electric connectors (52) respectively; 6 pin of an electric connector (51) are connected with an end of a resistance (R1), an end of No. three resistance (R3), an end of No. five resistance (R5) and an end of No. seven resistance (R7) simultaneously; The other end of the other end of the other end of the other end of a described resistance (R1), No. three resistance (R3), No. five resistance (R5) and No. seven resistance (R7) is connected with 5 pin of four No. two electric connectors (52) respectively; 7 pin of an electric connector (51) are connected with an end of No. ten resistance (R10) and an end of ten No. two resistance (R12) simultaneously; The other end of the other end of No. ten resistance (R10) and ten No. two resistance (R12) 4 pin of two No. three electric connectors (53) respectively is connected; 8 pin of an electric connector (51) are connected with an end of No. nine resistance (R9) and an end of ride on Bus No. 11 resistance (R11) simultaneously; The other end of the other end of No. nine resistance (R9) and ride on Bus No. 11 resistance (R11) is connected with 5 pin of two No. three electric connectors (53) simultaneously.

2. sensor cascade unit according to claim 1, it is characterized in that it also comprises housing (1) and case top lid (2), an electric connector (51), four No. two electric connectors (52) and two No. three electric connectors (53) all are fixed on the edge of housing (1); Circuit board (4) is fixed on housing (1) inside, and case top lid (2) is electrically connected with the opening sealing of housing (1) and with housing (1).

3. the sensor cascade unit of stating according to claim 2, it is characterized in that it also comprises conductive rubber pad (6), a described electric connector (51), four No. two electric connectors (52) and two No. three electric connectors (53) all are fixed on the edge of housing (1) by conductive rubber pad (6).

4. the sensor cascade unit of stating according to claim 3 is characterized in that it also comprises conductive rubber strip (7), seals and is electrically connected by conductive rubber strip (7) between described housing (1) and the case top lid (2).