CN104061986A - Balance circuit - Google Patents
Balance circuit Download PDFInfo
- Publication number
- CN104061986A CN104061986A CN201310095000.XA CN201310095000A CN104061986A CN 104061986 A CN104061986 A CN 104061986A CN 201310095000 A CN201310095000 A CN 201310095000A CN 104061986 A CN104061986 A CN 104061986A
- Authority
- CN
- China
- Prior art keywords
- module
- voltage
- output terminal
- pressure sensitive
- indicating
- 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.)
- Granted
Links
Abstract
A balance circuit comprises the components of: a first pressure sensing module, a second pressure sensing module, a first voltage amplifying module, a second voltage amplifying module, a first indicating module and a second indicating module. The balance circuit senses the weight of a reference weight through the first pressure sensing module and converts the weight of the reference weight to a voltage signal, and correspondingly amplifies the voltage signal through the first voltage amplifying module and transmits to the first indicating module. The second pressure sensing module and the second voltage amplifying module convert the weight of an object to be weighted to the voltage signal and furthermore perform amplification and outputting to the second indicating module. The first indicating module and the second indicating module compare the values of the received voltage signals and correspondingly output an indicating signal according to the comparison result. A user determines whether the object to be weighted is consistent with the weight of the reference weight according to the output indicating signal. The balance circuit finishes the function of the weight through small number of electronic elements. Therefore the balance circuit of the invention has advantages of low cost and simple structure.
Description
Technical field
The present invention relates to balance circuit, particularly relate to a kind of simple, balance circuit that cost is low.
Background technology
Balance is a kind of weighing apparatus, is the instrument of weighing mass of object.It is made according to lever principle, at the two ends of lever, respectively has a shallow bid, and counterweight is put in one end, and the other end is put the object that will claim, pointer is equipped with in lever central authorities, and during the balance of two ends, the quality at two ends (weight) equates.In existing balance weighing apparatus system, mostly by structure, reach balance, this design complexity of the balance weighing apparatus by constitutional balance processing procedure and cost are higher.
Summary of the invention
Based on this, be necessary to provide a kind of simple and low balance circuit of cost.
A balance circuit, comprising: the first pressure sensitive module, the second pressure sensitive module, the first voltage amplification module, second voltage amplification module, the first indicating module and the second indicating module;
Described the first pressure sensitive module comprises the power access end for being connected with power supply, the output and ground being connected with described the first voltage amplification module;
Described the first voltage amplification module comprises the input end being connected with described the first pressure sensitive module, the output and ground being connected with described the first indicating module;
Described the second pressure sensitive module comprises the power access end for being connected with power supply, the output and ground being connected with described second voltage amplification module;
Described second voltage amplification module comprises the input end being connected with described the second pressure sensitive module, the output and ground being connected with described the second indicating module;
Described the first indicating module comprises input end and output terminal, and described the second indicating module comprises input end and output terminal;
Described the first indicating module comprises the input end being connected with described the first voltage amplification module and the output terminal being connected with described second voltage amplification module;
Described the second indicating module comprises the input end being connected with described second voltage amplification module and the output terminal being connected with described the first voltage amplification module;
Described the first pressure sensitive module is for responding to the weight with reference to counterweight, and with reference to the weight of counterweight, be converted to voltage signal and export to described the first voltage amplification module, described the first voltage amplification module is for amplifying voltage signal and being transferred to described the first indicating module;
Described the second pressure sensitive module is for responding to the weight of article to be measured, and the weight of article to be measured is converted to voltage signal exports to described second voltage amplification module, described second voltage amplification module is for amplifying voltage signal and being transferred to described the second indicating module;
The voltage signal size that described the first indicating module and described the second indicating module relatively receive, if the voltage signal that the voltage signal that described the first indicating module receives receives higher than described the second indicating module, described the first indicating module sends indicator signal; If the voltage signal that the voltage signal that described the first indicating module receives receives lower than described the second indicating module, described the second indicating module sends indicator signal; If the voltage signal that described the first indicating module receives equals the voltage signal that described the second indicating module receives, described the first indicating module and described the second indicating module all do not send indicator signal.
In an embodiment, described the first pressure sensitive module comprises pressure transducer RS1 and filter capacitor C1 therein,
The input end of described pressure transducer RS1 for being connected with power supply, earth terminal ground connection, output terminal is connected with one end of described filter capacitor C1, the other end ground connection of described filter capacitor C1;
The input end of described pressure transducer RS1 is the voltage incoming end of described the first pressure sensitive module, the points of common connection of the output terminal of described pressure transducer RS1 and described filter capacitor C1 is the output terminal of described the first pressure sensitive module, and the earth terminal of the earth terminal of described pressure transducer RS1 and described filter capacitor C1 is the earth terminal of described the first pressure sensitive module.
In an embodiment, described the second pressure sensitive module comprises pressure transducer RS2 and filter capacitor C2 therein,
The input end of described pressure transducer RS2 for being connected with power supply, earth terminal ground connection, output terminal is connected with one end of described filter capacitor C2, the other end ground connection of described filter capacitor C2;
The input end of described pressure transducer RS2 is the power access end of described the second pressure sensitive module, the points of common connection of the output terminal of described pressure transducer RS2 and described filter capacitor C2 is the output terminal of described the second pressure sensitive module, and the earth terminal of the earth terminal of described pressure transducer RS2 and described filter capacitor C2 is the earth terminal of described the second pressure sensitive module.
In an embodiment, described the first voltage amplification module comprises divider resistance R5, feedback resistance R7, filter capacitor C3 and operational amplifier U2A therein,
Described divider resistance R5 one end is connected with the normal phase input end of described operational amplifier U2A, described feedback resistance R7 is parallel between the normal phase input end and output terminal of described operational amplifier U2A, described filter capacitor C3 one end is connected with the output terminal of described operational amplifier U2A, other end ground connection;
The free end of described divider resistance R5 is the input end of described the first voltage amplification module, the points of common connection of the output terminal of described operational amplifier U2A and described filter capacitor C3 is the output terminal of described the first voltage amplification module, and the inverting input of described operational amplifier U2A is the earth terminal of described the first voltage amplification module.
In an embodiment, described second voltage amplification module comprises divider resistance R6, feedback resistance R8, filter capacitor C4 and operational amplifier U2B therein,
Described divider resistance R6 one end is connected with the normal phase input end of described operational amplifier U2B, described feedback resistance R8 is parallel between the normal phase input end and output terminal of described operational amplifier U2B, described filter capacitor C4 one end is connected with the output terminal of described operational amplifier U2B, other end ground connection;
The free end of described divider resistance R6 is the input end of described second voltage amplification module, the points of common connection of the output terminal of described operational amplifier U2B and described filter capacitor C4 is the output terminal of described second voltage amplification module, and the inverting input of described operational amplifier U2B is the earth terminal of described second voltage amplification module.
Therein in an embodiment, described the first indicating module is LED 3, the positive pole of described LED 3 is connected with the output terminal of described the first voltage amplification module, and the negative pole of described LED 3 is connected with the output terminal of described second voltage amplification module.
Therein in an embodiment, described the second indicating module is LED 2, the positive pole of described LED 2 is connected with the output terminal of described second voltage amplification module, and the negative pole of described LED 2 is connected with the output terminal of described the first voltage amplification module.
Therein in an embodiment, also comprise the power module being connected with described the second pressure sensitive module with described the first pressure sensitive module respectively, described power module comprises earth terminal and for exporting the output terminal of direct supply, described power module comprises lithium battery BT and switch S 1, the positive pole of described lithium battery is connected with one end of described switch S 1, and the other end of described switch S 1 is connected with described the second pressure sensitive module with described the first pressure sensitive module.
Therein in an embodiment, also comprise the voltage indicating module being connected away from one end of described lithium battery BT with described switch S 1, described voltage indicating module comprises divider resistance R3, divider resistance R4, operational amplifier U1 and LED 1,
Described divider resistance R3 is connected with the output terminal of described power module with one end after described divider resistance R4 series connection, other end ground connection, the points of common connection of described divider resistance R3 and described divider resistance R4 is connected with the inverting input of described operational amplifier U1, the normal phase input end input reference voltage of described operational amplifier U1, the output terminal of described operational amplifier U1 is connected with the positive pole of described LED 1, the minus earth of described LED 1.
Therein in an embodiment, described voltage indicating module also comprises divider resistance R2, voltage stabilizing diode Z1 and divider resistance R1, described divider resistance R2 and described voltage stabilizing diode Z1 are series between the output and ground of described power module, the plus earth of described voltage stabilizing diode Z1, the points of common connection of the negative pole of described voltage stabilizing diode and described divider resistance R2 is connected with the normal phase input end of described operational amplifier U1, one end of described divider resistance R1 is connected with the negative pole of LED 1, other end ground connection.
Above-mentioned balance circuit is converted to voltage signal by the first pressure sensitive module induction with reference to the weight of counterweight and with reference to the weight of counterweight, and correspondingly by the first voltage amplification module, voltage signal is amplified and is transferred to the first indicating module.The second pressure sensitive module and second voltage amplification module are converted to the weight of article to be measured voltage signal and amplify, and export to the second indicating module.The first indicating module and the second indicating module relatively receive voltage signal size and export indicator signal according to comparative result correspondence.User judges that according to the indicator signal of output whether article to be measured are with consistent with reference to counterweight weight.Above-mentioned balance circuit adopts less electronic component to complete the function of balance weighing apparatus, thereby above-mentioned balance circuit cost is lower and simple in structure.
Accompanying drawing explanation
Fig. 1 is the module map of balance circuit;
Fig. 2 is the schematic diagram of balance circuit.
Embodiment
As shown in Figure 1, be the module map of balance circuit.
A balance circuit, comprising: the first pressure sensitive module 101, the second pressure sensitive module 103, the first voltage amplification module 105, second voltage amplification module 107, the first indicating module 109 and the second indicating module 111.
The first pressure sensitive module 101 comprises the power access end for being connected with power supply, the output and ground being connected with the first voltage amplification module 105.
The first voltage amplification module 105 comprises the input end being connected with the first pressure sensitive module 101, the output and ground being connected with the first indicating module 109.
The second pressure sensitive module 103 comprises the power access end for being connected with power supply, the output and ground being connected with second voltage amplification module 107.
Second voltage amplification module 107 comprises the input end being connected with the second pressure sensitive module 103, the output and ground being connected with the second indicating module 111.
The first indicating module 109 comprises input end and output terminal, and the second indicating module 111 comprises input end and output terminal.
The first indicating module 109 comprises the input end being connected with the first voltage amplification module 105 and the output terminal being connected with second voltage amplification module 107.
The second indicating module 111 comprises the input end being connected with second voltage amplification module 107 and the output terminal being connected with the first voltage amplification module 105.
The first pressure sensitive module 101 is for responding to the weight with reference to counterweight, and with reference to the weight of counterweight, be converted to voltage signal and export to the first voltage amplification module 105, the first voltage amplification modules 105 for voltage signal being amplified and being transferred to the first indicating module 109.
The second pressure sensitive module 103 is for responding to the weight of article to be measured, and the weight of article to be measured is converted to voltage signal exports to second voltage amplification module 107, second voltage amplification module 107 is for amplifying voltage signal and being transferred to the second indicating module 111.
The voltage signal size that the first indicating module 109 and the second indicating module 111 relatively receive, if the voltage signal that the voltage signal that the first indicating module 109 receives receives higher than the second indicating module 111, the first indicating module 109 sends indicator signal; If the voltage signal that the voltage signal that the first indicating module 109 receives receives lower than the second indicating module 111, the second indicating module 111 sends indicator signal; If the voltage signal that the first indicating module 109 receives equals the voltage signal that the second indicating module 111 receives, the first indicating module 109 and the second indicating module 111 all do not send indicator signal.
The first pressure sensitive module 101 is for responding to the weight with reference to counterweight, and with reference to the weight of counterweight, is converted to voltage signal and exports to the first voltage amplification module 105.The first pressure sensitive module 101 is used to balance circuit that reference voltage signal is provided.
In like manner, the second pressure sensitive module 103 is for responding to the weight of article to be measured, and the weight of article to be measured is converted to voltage signal exports to second voltage amplification module 107.The second pressure sensitive module 103 is for the weight of article to be measured is converted to voltage signal, thereby makes comparisons with the reference voltage signal of the first pressure sensitive module 101.
The first voltage amplification module 105 is exported to the first indicating module 109 after the voltage signal of the first pressure sensitive module 101 outputs is amplified.Because balance circuit is for weighing the article of little weight, and the voltage signal of the first pressure sensitive module 101 outputs is directly proportional to the weight of counterweight.Therefore, the first pressure sensitive module 101 is less according to the voltage signal of the weight conversion with reference to counterweight, thereby amplifies by 105 pairs of reference voltage signals of the first voltage amplification module, for the normal work of the first indicating module 109 provides enough large voltage signal.
In like manner, second voltage amplification module 107 is exported to the second indicating module 111 after the voltage signal of the second pressure sensitive module 103 outputs is amplified.Balance circuit is for weighing the article of little weight, and the voltage signal of the second induction module output is directly proportional to the weight of article to be measured.Therefore, the second pressure sensitive module 103 is less according to the voltage signal of the weight conversion of article to be measured.Thereby by 107 pairs of voltage signals of second voltage amplification module, amplify, for the normal work of the second indicating module 111 provides enough large voltage signal.
The first indicating module 109 and the second indicating module 111 are for exporting indicator signal according to the voltage signal receiving.Particularly, the voltage signal size that the first indicating module 109 and the second indicating module 111 relatively receive, if the voltage signal that the first indicating module 109 receives is greater than the voltage signal that the second indicating module 111 receives, the first indicating module 109 is exported indicator signals, and the weight with reference to counterweight that weighs less than of article to be measured is described.If the voltage signal that the second indicating module 111 receives is greater than the voltage signal that the first indicating module 109 receives, the second indicating module 111 output indicator signals, illustrate that the weight of article to be measured is higher than the weight with reference to counterweight.If the voltage signal equal and opposite in direction that the first indicating module 109 and the second indicating module 111 receive, does not all export indicator signal, illustrate that the weight of article to be measured is consistent with the weight with reference to counterweight.
Incorporated by reference to Fig. 2.
The first pressure sensitive module 101 comprises pressure transducer RS1 and filter capacitor C1.
The input end of pressure transducer RS1 for being connected with power supply, earth terminal ground connection, output terminal is connected with one end of filter capacitor C1, the other end ground connection of filter capacitor C1.
The input end of pressure transducer RS1 is the voltage incoming end of the first pressure sensitive module 101, the points of common connection of the output terminal of pressure transducer RS1 and filter capacitor C1 is the output terminal of the first pressure sensitive module 101, and the earth terminal of the earth terminal of pressure transducer RS1 and filter capacitor C1 is the earth terminal of the first pressure sensitive module 101.
The second pressure sensitive module 103 comprises pressure transducer RS2 and filter capacitor C2.
The input end of pressure transducer RS2 for being connected with power supply, earth terminal ground connection, output terminal is connected with one end of filter capacitor C2, the other end ground connection of filter capacitor C2.
The input end of pressure transducer RS2 is the power access end of the second pressure sensitive module 103, the points of common connection of the output terminal of pressure transducer RS2 and filter capacitor C2 is the output terminal of the second pressure sensitive module 103, and the earth terminal of the earth terminal of pressure transducer RS2 and filter capacitor C2 is the earth terminal of the second pressure sensitive module 103.
The first voltage amplification module 105 comprises divider resistance R5, feedback resistance R7, filter capacitor C3 and operational amplifier U2A.
Divider resistance R5 one end is connected with the normal phase input end of operational amplifier U2A, and feedback resistance R7 is parallel between the normal phase input end and output terminal of operational amplifier U2A, and filter capacitor C3 one end is connected with the output terminal of operational amplifier U2A, other end ground connection.
The free end of divider resistance R5 is the input end of the first voltage amplification module 105, the points of common connection of the output terminal of operational amplifier U2A and filter capacitor C3 is the output terminal of the first voltage amplification module 105, and the inverting input of operational amplifier U2A is the earth terminal of the first voltage amplification module 105.
Second voltage amplification module 107 comprises divider resistance R6, feedback resistance R8, filter capacitor C4 and operational amplifier U2B.
Divider resistance R6 one end is connected with the normal phase input end of operational amplifier U2B, and feedback resistance R8 is parallel between the normal phase input end and output terminal of operational amplifier U2B, and filter capacitor C4 one end is connected with the output terminal of operational amplifier U2B, other end ground connection.
The free end of divider resistance R6 is the input end of second voltage amplification module 107, the points of common connection of the output terminal of operational amplifier U2B and filter capacitor C4 is the output terminal of second voltage amplification module 107, and the inverting input of operational amplifier U2B is the earth terminal of second voltage amplification module 107.
The first indicating module 109 is LED 3, and the positive pole of LED 3 is connected with the output terminal of the first voltage amplification module 105, and the negative pole of LED 3 is connected with the output terminal of second voltage amplification module 107.
The second indicating module 111 is LED 2, and the positive pole of LED 2 is connected with the output terminal of second voltage amplification module 107, and the negative pole of LED 2 is connected with the output terminal of the first voltage amplification module 105.
Balance circuit also comprises the power module 113 being connected with the second pressure sensitive module 103 with the first pressure sensitive module 101 respectively, power module 113 comprises earth terminal and for exporting the output terminal of direct supply, power module 113 comprises lithium battery BT and switch S 1, the positive pole of lithium battery is connected with one end of switch S 1, and the other end of switch S 1 is connected with the second pressure sensitive module 103 with the first pressure sensitive module 101.
Balance circuit also comprises the voltage indicating module 115 being connected away from one end of lithium battery BT with switch S 1, and voltage indicating module 115 comprises divider resistance R3, divider resistance R4, operational amplifier U1 and LED 1.
Divider resistance R3 is connected with the output terminal of power module with one end after divider resistance R4 series connection, other end ground connection, the points of common connection of divider resistance R3 and divider resistance R4 is connected with the inverting input of operational amplifier U1, the normal phase input end input reference voltage of operational amplifier U1, the output terminal of operational amplifier U1 is connected with the positive pole of LED 1, the minus earth of LED 1.
Voltage indicating module 115 also comprises divider resistance R2, voltage stabilizing diode Z1 and divider resistance R1, divider resistance R2 and voltage stabilizing diode Z1 are series between the output and ground of power module 113, the plus earth of voltage stabilizing diode Z1, the points of common connection of the negative pole of voltage stabilizing diode and divider resistance R2 is connected with the normal phase input end of operational amplifier U1, one end of divider resistance R1 is connected with the negative pole of LED 1, other end ground connection.
During lithium battery BT undertension, the voltage of the inverting input of voltage indicating module 115 input is lower than reference voltage, and operational amplifier U1 exports high level, and LED 1 is lighted, and prompting user charges to lithium battery BT.
Based on above-mentioned all embodiment, the principle of work of balance circuit is as follows:
Closing Switch S1, lithium battery BT is to pressure transducer RS1 and pressure transducer RS2 power supply.After pressure transducer RS1 is under pressure, the 1 pin voltage of pressure transducer RS1 changes, and via after filter capacitor C1 filtering, voltage signal being transferred to the first voltage amplification module 105.The first voltage amplification module 105 arranges the amplification coefficient of operational amplifier U2A by divider resistance R5 and feedback resistance R7.Operational amplifier U2A is according to the amplification coefficient amplification voltage signal of setting, and the voltage signal after operational amplifier U2A amplifies is exported to LED 3 after via filter capacitor C3 filtering.
After switch S 1 closure, pressure transducer RS2 also starts working.After pressure transducer RS2 is under pressure, the 1 pin voltage of pressure transducer RS2 changes, and via after filter capacitor C2 filtering, voltage signal being transferred to second voltage amplification module 107.Second voltage amplification module 107 arranges the amplification coefficient of operational amplifier U2B by divider resistance R6 and feedback resistance R8.Operational amplifier U2B is according to the amplification coefficient amplification voltage signal of setting, and the voltage signal after operational amplifier U2B amplifies is exported to LED 2 after via filter capacitor C4 filtering.
At LED 2 and LED 3, all receive after voltage signal, LED 2 and LED 3 are controlled self conducting and cut-off according to the voltage signal size receiving separately.Because the positive pole of LED 2 is connected with the negative pole of LED 3, the negative pole of LED 2 is connected with the positive pole of LED 3.Therefore, LED 2 is luminous, and to send the condition of indicator signal be that the voltage signal of second voltage amplification module 107 output is higher than the voltage signal of the first voltage amplification module 105 outputs to LED 2.In like manner, LED 3 is luminous, and to send the condition of indicator signal be that the voltage signal of second voltage amplification module 107 output is lower than the voltage signal of the first voltage amplification module 105 outputs to LED 3.When the voltage signal of second voltage amplification module 107 outputs equals the voltage signal of the first voltage amplification module 105 outputs, the positive pole of LED 2 and LED 3 are not all lighted.
Above-mentioned balance circuit is converted to voltage signal by the first pressure sensitive module 101 induction with reference to the weight of counterweight and with reference to the weight of counterweight, and correspondingly by the first voltage amplification module 105, voltage signal is amplified and is transferred to the first indicating module 109.The second pressure sensitive module 103 and second voltage amplification module 107 are converted to the weight of article to be measured voltage signal and amplify, and export to the second indicating module 111.The first indicating module 109 and the second indicating module 111 relatively receive voltage signal size and export indicator signal according to comparative result correspondence.User judges that according to the indicator signal of output whether article to be measured are with consistent with reference to counterweight weight.Above-mentioned balance circuit adopts less electronic component to complete the function of balance weighing apparatus, thereby above-mentioned balance circuit cost is lower and simple in structure.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a balance circuit, is characterized in that, comprising: the first pressure sensitive module, the second pressure sensitive module, the first voltage amplification module, second voltage amplification module, the first indicating module and the second indicating module;
Described the first pressure sensitive module comprises the power access end for being connected with power supply, the output and ground being connected with described the first voltage amplification module;
Described the first voltage amplification module comprises the input end being connected with described the first pressure sensitive module, the output and ground being connected with described the first indicating module;
Described the second pressure sensitive module comprises the power access end for being connected with power supply, the output and ground being connected with described second voltage amplification module;
Described second voltage amplification module comprises the input end being connected with described the second pressure sensitive module, the output and ground being connected with described the second indicating module;
Described the first indicating module comprises input end and output terminal, and described the second indicating module comprises input end and output terminal;
Described the first indicating module comprises the input end being connected with described the first voltage amplification module and the output terminal being connected with described second voltage amplification module;
Described the second indicating module comprises the input end being connected with described second voltage amplification module and the output terminal being connected with described the first voltage amplification module;
Described the first pressure sensitive module is for responding to the weight with reference to counterweight, and with reference to the weight of counterweight, be converted to voltage signal and export to described the first voltage amplification module, described the first voltage amplification module is for amplifying voltage signal and being transferred to described the first indicating module;
Described the second pressure sensitive module is for responding to the weight of article to be measured, and the weight of article to be measured is converted to voltage signal exports to described second voltage amplification module, described second voltage amplification module is for amplifying voltage signal and being transferred to described the second indicating module;
The voltage signal size that described the first indicating module and described the second indicating module relatively receive, if the voltage signal that the voltage signal that described the first indicating module receives receives higher than described the second indicating module, described the first indicating module sends indicator signal; If the voltage signal that the voltage signal that described the first indicating module receives receives lower than described the second indicating module, described the second indicating module sends indicator signal; If the voltage signal that described the first indicating module receives equals the voltage signal that described the second indicating module receives, described the first indicating module and described the second indicating module all do not send indicator signal.
2. balance circuit according to claim 1, is characterized in that, described the first pressure sensitive module comprises pressure transducer RS1 and filter capacitor C1,
The input end of described pressure transducer RS1 for being connected with power supply, earth terminal ground connection, output terminal is connected with one end of described filter capacitor C1, the other end ground connection of described filter capacitor C1;
The input end of described pressure transducer RS1 is the voltage incoming end of described the first pressure sensitive module, the points of common connection of the output terminal of described pressure transducer RS1 and described filter capacitor C1 is the output terminal of described the first pressure sensitive module, and the earth terminal of the earth terminal of described pressure transducer RS1 and described filter capacitor C1 is the earth terminal of described the first pressure sensitive module.
3. balance circuit according to claim 1, is characterized in that, described the second pressure sensitive module comprises pressure transducer RS2 and filter capacitor C2,
The input end of described pressure transducer RS2 for being connected with power supply, earth terminal ground connection, output terminal is connected with one end of described filter capacitor C2, the other end ground connection of described filter capacitor C2;
The input end of described pressure transducer RS2 is the power access end of described the second pressure sensitive module, the points of common connection of the output terminal of described pressure transducer RS2 and described filter capacitor C2 is the output terminal of described the second pressure sensitive module, and the earth terminal of the earth terminal of described pressure transducer RS2 and described filter capacitor C2 is the earth terminal of described the second pressure sensitive module.
4. balance circuit according to claim 1, is characterized in that, described the first voltage amplification module comprises divider resistance R5, feedback resistance R7, filter capacitor C3 and operational amplifier U2A,
Described divider resistance R5 one end is connected with the normal phase input end of described operational amplifier U2A, described feedback resistance R7 is parallel between the normal phase input end and output terminal of described operational amplifier U2A, described filter capacitor C3 one end is connected with the output terminal of described operational amplifier U2A, other end ground connection;
The free end of described divider resistance R5 is the input end of described the first voltage amplification module, the points of common connection of the output terminal of described operational amplifier U2A and described filter capacitor C3 is the output terminal of described the first voltage amplification module, and the inverting input of described operational amplifier U2A is the earth terminal of described the first voltage amplification module.
5. balance circuit according to claim 1, is characterized in that, described second voltage amplification module comprises divider resistance R6, feedback resistance R8, filter capacitor C4 and operational amplifier U2B,
Described divider resistance R6 one end is connected with the normal phase input end of described operational amplifier U2B, described feedback resistance R8 is parallel between the normal phase input end and output terminal of described operational amplifier U2B, described filter capacitor C4 one end is connected with the output terminal of described operational amplifier U2B, other end ground connection;
The free end of described divider resistance R6 is the input end of described second voltage amplification module, the points of common connection of the output terminal of described operational amplifier U2B and described filter capacitor C4 is the output terminal of described second voltage amplification module, and the inverting input of described operational amplifier U2B is the earth terminal of described second voltage amplification module.
6. balance circuit according to claim 1, it is characterized in that, described the first indicating module is LED 3, the positive pole of described LED 3 is connected with the output terminal of described the first voltage amplification module, and the negative pole of described LED 3 is connected with the output terminal of described second voltage amplification module.
7. balance circuit according to claim 1, it is characterized in that, described the second indicating module is LED 2, the positive pole of described LED 2 is connected with the output terminal of described second voltage amplification module, and the negative pole of described LED 2 is connected with the output terminal of described the first voltage amplification module.
8. balance circuit according to claim 1, it is characterized in that, also comprise the power module being connected with described the second pressure sensitive module with described the first pressure sensitive module respectively, described power module comprises earth terminal and for exporting the output terminal of direct supply, described power module comprises lithium battery BT and switch S 1, the positive pole of described lithium battery is connected with one end of described switch S 1, and the other end of described switch S 1 is connected with described the second pressure sensitive module with described the first pressure sensitive module.
9. balance circuit according to claim 8, it is characterized in that, also comprise the voltage indicating module being connected away from one end of described lithium battery BT with described switch S 1, described voltage indicating module comprises divider resistance R3, divider resistance R4, operational amplifier U1 and LED 1
Described divider resistance R3 is connected with the output terminal of described power module with one end after described divider resistance R4 series connection, other end ground connection, the points of common connection of described divider resistance R3 and described divider resistance R4 is connected with the inverting input of described operational amplifier U1, the normal phase input end input reference voltage of described operational amplifier U1, the output terminal of described operational amplifier U1 is connected with the positive pole of described LED 1, the minus earth of described LED 1.
10. balance circuit according to claim 9, it is characterized in that, described voltage indicating module also comprises divider resistance R2, voltage stabilizing diode Z1 and divider resistance R1, described divider resistance R2 and described voltage stabilizing diode Z1 are series between the output and ground of described power module, the plus earth of described voltage stabilizing diode Z1, the points of common connection of the negative pole of described voltage stabilizing diode and described divider resistance R2 is connected with the normal phase input end of described operational amplifier U1, one end of described divider resistance R1 is connected with the negative pole of LED 1, other end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310095000.XA CN104061986B (en) | 2013-03-22 | 2013-03-22 | Balance circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310095000.XA CN104061986B (en) | 2013-03-22 | 2013-03-22 | Balance circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104061986A true CN104061986A (en) | 2014-09-24 |
| CN104061986B CN104061986B (en) | 2016-04-13 |
Family
ID=51549809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310095000.XA Expired - Fee Related CN104061986B (en) | 2013-03-22 | 2013-03-22 | Balance circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104061986B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483877A (en) * | 2014-12-08 | 2015-04-01 | 蚌埠天光传感器有限公司 | Analog input digital type force measurement indicator |
| CN107003189A (en) * | 2014-12-05 | 2017-08-01 | 株式会社村田制作所 | Sensor assembly |
| CN113783534A (en) * | 2021-09-15 | 2021-12-10 | 武汉市聚芯微电子有限责任公司 | Feedback type audio power amplifying circuit, audio amplifying device and electronic device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1391000A (en) * | 1972-06-27 | 1975-04-16 | Mettler Instrumente Ag | Electrical balance assemblies |
| DE2839016A1 (en) * | 1978-09-07 | 1980-03-20 | Keiper Trainingsysteme Gmbh | High accuracy balance with short switch=on period - contains microprocessor evaluation circuit with automatically balancing analogue comparator stage |
| CN201392237Y (en) * | 2008-12-19 | 2010-01-27 | 上海精密科学仪器有限公司 | Balance anti-interference self-correction circuit |
| CN201955133U (en) * | 2010-12-03 | 2011-08-31 | 张艺馨 | Electronic trebuchet model |
| CN102288273A (en) * | 2011-07-04 | 2011-12-21 | 孟凡强 | Electro-optical analytical balance |
| CN102768060A (en) * | 2012-08-14 | 2012-11-07 | 昆山大百科实验室设备工程有限公司 | Multifunctional high-accuracy electronic balance |
| CN102778272A (en) * | 2012-08-14 | 2012-11-14 | 昆山大百科实验室设备工程有限公司 | Simple microbalance |
| CN102809412A (en) * | 2012-08-14 | 2012-12-05 | 昆山大百科实验室设备工程有限公司 | High-performance electromagnetic scale |
-
2013
- 2013-03-22 CN CN201310095000.XA patent/CN104061986B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1391000A (en) * | 1972-06-27 | 1975-04-16 | Mettler Instrumente Ag | Electrical balance assemblies |
| DE2839016A1 (en) * | 1978-09-07 | 1980-03-20 | Keiper Trainingsysteme Gmbh | High accuracy balance with short switch=on period - contains microprocessor evaluation circuit with automatically balancing analogue comparator stage |
| CN201392237Y (en) * | 2008-12-19 | 2010-01-27 | 上海精密科学仪器有限公司 | Balance anti-interference self-correction circuit |
| CN201955133U (en) * | 2010-12-03 | 2011-08-31 | 张艺馨 | Electronic trebuchet model |
| CN102288273A (en) * | 2011-07-04 | 2011-12-21 | 孟凡强 | Electro-optical analytical balance |
| CN102768060A (en) * | 2012-08-14 | 2012-11-07 | 昆山大百科实验室设备工程有限公司 | Multifunctional high-accuracy electronic balance |
| CN102778272A (en) * | 2012-08-14 | 2012-11-14 | 昆山大百科实验室设备工程有限公司 | Simple microbalance |
| CN102809412A (en) * | 2012-08-14 | 2012-12-05 | 昆山大百科实验室设备工程有限公司 | High-performance electromagnetic scale |
Non-Patent Citations (1)
| Title |
|---|
| 顾申申等: "电子天平中数字电路的CPLD实现", 《微计算机信息》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107003189A (en) * | 2014-12-05 | 2017-08-01 | 株式会社村田制作所 | Sensor assembly |
| CN104483877A (en) * | 2014-12-08 | 2015-04-01 | 蚌埠天光传感器有限公司 | Analog input digital type force measurement indicator |
| CN113783534A (en) * | 2021-09-15 | 2021-12-10 | 武汉市聚芯微电子有限责任公司 | Feedback type audio power amplifying circuit, audio amplifying device and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104061986B (en) | 2016-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206583968U (en) | A kind of charging pile measures calibration equipment | |
| CN107741571B (en) | Battery voltage detection circuit | |
| CN104061986B (en) | Balance circuit | |
| CN201716103U (en) | Vibration detection device for micro-variation capacitance pole tower | |
| CN210015156U (en) | Current detection circuit, device and electric product | |
| CN103018571A (en) | Dual-coupling type on-line monitoring device of ground impedance of electric transmission line | |
| CN103245366A (en) | Vibration signal differentiating circuit | |
| CN203101474U (en) | Electrification detector for high-voltage electric system | |
| CN201215505Y (en) | Digital weighing controller | |
| CN202471283U (en) | Sensing clip for jointly acquiring temperature and voltage of tandem lead-acid battery | |
| CN205049679U (en) | Residual current transformer sampling circuit | |
| CN103575434A (en) | Pressure detection circuit | |
| CN203881863U (en) | Zero-crossing switching detecting device for reactive compensation capacitor | |
| CN203632664U (en) | Portable fault detector for remote power-collecting system equipment | |
| CN202548231U (en) | Detection device for substation merging unit | |
| CN203117697U (en) | Current monitoring module | |
| CN113654962A (en) | High-precision two-wire system industrial dust detection device | |
| CN205749663U (en) | A kind of current monitoring device | |
| CN204575721U (en) | DC component detection circuit | |
| CN205947366U (en) | Intelligent travel suitcase | |
| CN205910814U (en) | Vehicle accident detects help -calling system | |
| CN205156848U (en) | With meet an emergency test equipment of cell -phone through wi -Fi operation | |
| CN203465371U (en) | Line inspection apparatus for network communication cable | |
| CN207321096U (en) | A kind of not output current detection circuit and Switching Power Supply altogether | |
| CN203037738U (en) | Three-phase electric energy meter realized by and based on ADE7755 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20190322 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |