SU560183A1 - Method of compensating the resistance of wires and contacts of a multipoint measuring bridge switch - Google Patents
Method of compensating the resistance of wires and contacts of a multipoint measuring bridge switchInfo
- Publication number
- SU560183A1 SU560183A1 SU2111053A SU2111053A SU560183A1 SU 560183 A1 SU560183 A1 SU 560183A1 SU 2111053 A SU2111053 A SU 2111053A SU 2111053 A SU2111053 A SU 2111053A SU 560183 A1 SU560183 A1 SU 560183A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- resistance
- contacts
- wires
- compensating
- bridge
- Prior art date
Links
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Description
ченных к потенциальным зажимам измер емого резистора. Вольтметры 10 и 11 предназначены дл измерени падений напр жени на проводах и контактах коммутатора, подключенных к токовым зажимам измер емого резистора. На чертеже прин ты также следуюш ,ие обозначени : 12 - уравновешиваюющее плечо моста, 13 и 14 - плечи отношени моста, 15 - индикатор баланса моста, 16 и 17 - омметры, предназначенные дл измерени сопротивлений плеч отношени моста , 18 - делитель напр жени , введенного в измерительную диагональ моста, 19 - вольтметр , служащий дл измерени этого напр жени , 20 - шина питани моста, 21 - шина подключени дополнительного источника напр жени .to potential terminals of the measured resistor. Voltmeters 10 and 11 are designed to measure voltage drops on the wires and contacts of the switch connected to the current terminals of the measured resistor. In the drawing, the following symbols are also accepted: 12 - balancing shoulder of the bridge, 13 and 14 - shoulders of the bridge ratio, 15 - bridge balance indicator, 16 and 17 ohmmeters, designed to measure the resistance of the shoulders of the bridge ratio, 18 - voltage divider, entered into the measuring diagonal of the bridge, 19 is a voltmeter used to measure this voltage, 20 is the power supply bus of the bridge, 21 is the bus connecting an additional voltage source.
Схема работает следуюш,им образом.The scheme works in the following way.
При разомкнутых контактах 4, 5, 8 и 9 и отключенном индикаторе 15 производитс измерение сопротивлени илеча 14 с помош,ью омметра 16 и суммарного сопротивлени плеч 13 и 14 с помош,ью омметра 17. Напр жение питани моста подаетс по шине 20.When the contacts 4, 5, 8 and 9 are open and the indicator 15 is turned off, the resistance of the sensor 14 is measured with the aid, an ohmmeter 16 and the total resistance of the shoulders 13 and 14 with the aid, an ohmmeter 17. The power supply voltage of the bridge is fed through bus 20.
Затем с помопдью контактов 4 и 5 подключаетс измер емый резистор 1. Балансировка моста осуш,ествл етс изменением сопротивлени плеча 12 до тех пор, пока индикатор 15 не будет установлен в нейтральное положение . При этом напр жение на зажимах индикатора 15 равно нулю.Then, using pins 4 and 5, a resistor 1 is connected. Balancing of the bridge is dried, and the resistance of the shoulder 12 is changed until the indicator 15 is in the neutral position. In this case, the voltage at the terminals of the indicator 15 is zero.
Если часть падени напр жени на проводах и контактах коммутатора (равную отношению сопротивлени плеча отношени моста , противоположного плечу, в которое включены компенсируемые провода и контакты коммутатора, к суммарному сопротивлению плеч отношени моста), ввести в измерительную диагональ последовательно с индикатором баланса, вли ние сопротивлени проводов и контактов коммутатора на равновесиеIf a part of the voltage drop on the wires and contacts of the switch (equal to the ratio of the shoulder resistance of the bridge ratio, opposite the shoulder in which the compensated wires and contacts of the switch are included, to the total resistance of the shoulders of the bridge ratio), enter the measurement diagonal in series with the balance indicator switch wires and contacts on balance
мостовой схемы будет исключено. Тем самым исключаетс погрешность измерени сопротивлени резистора 1 (из-за вли ни сопротивлени проводов и контактов коммутатора).bridge circuit will be excluded. This eliminates the measurement error of the resistance of resistor 1 (due to the influence of the resistance of the wires and the contacts of the switch).
Дополнительного повышени напр жени питани моста дл сохранени его чувствительности не требуетс .There is no need to further increase the supply voltage of the bridge to maintain its sensitivity.
Использование предлагаемого способа компенсации сопротивлени проводов и контактов коммутатора обеспечивает повышенную чувствительность схемы, а следовательно, и точность измерени без существенного увеличени напр жени питани .Using the proposed method of compensating for the resistance of the wires and contacts of the switch provides increased circuit sensitivity and, consequently, measurement accuracy without a significant increase in the supply voltage.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2111053A SU560183A1 (en) | 1975-03-07 | 1975-03-07 | Method of compensating the resistance of wires and contacts of a multipoint measuring bridge switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2111053A SU560183A1 (en) | 1975-03-07 | 1975-03-07 | Method of compensating the resistance of wires and contacts of a multipoint measuring bridge switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU560183A1 true SU560183A1 (en) | 1977-05-30 |
Family
ID=20611992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU2111053A SU560183A1 (en) | 1975-03-07 | 1975-03-07 | Method of compensating the resistance of wires and contacts of a multipoint measuring bridge switch |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU560183A1 (en) |
-
1975
- 1975-03-07 SU SU2111053A patent/SU560183A1/en active
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