CN201444065U - Liquid level temperature sensor - Google Patents
Liquid level temperature sensor Download PDFInfo
- Publication number
- CN201444065U CN201444065U CN 200920015220 CN200920015220U CN201444065U CN 201444065 U CN201444065 U CN 201444065U CN 200920015220 CN200920015220 CN 200920015220 CN 200920015220 U CN200920015220 U CN 200920015220U CN 201444065 U CN201444065 U CN 201444065U
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- liquid level
- temperature
- switch module
- resistance
- sensor
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Abstract
The utility model relates to a liquid level temperature sensor, belonging to the technical field of sensors. A sensor circuit comprises a liquid level inductive switch module, a temperature-sensitive switch module, a main conducting wire resistor and conducting wires and adopts the connection mode that the liquid level inductive switch module, the temperature-sensitive switch module and the main conducting wire resistor are connected in series by the conducting wires. The utility model has the advantages that the sensor can simultaneously detect a liquid level signal and a temperature signal, directly detects the connection status of a signal circuit of the sensor, has simple structure, saves the costs of signal detection and engineering construction, reduces the quantity of signal detection circuits, can control and detect the opening state or the closing state of an electromagnetic valve and works stably and reliably.
Description
Technical field
The utility model belongs to sensor technical field, particularly a kind of liquid level and temperature sensor.
Background technology
At present, detecting fire-water pond, fire water box, radiator, when the liquid level of fuel tank or oil tank or temperature, Level Detection and temperature detection are as an important ring of commercial Application, various sensing detection modes are arranged, adopting magnetic float liquid level switch to carry out in the mode of liquid level monitoring with using microswitch and mercury cut-off, processing and installation process complexity to sensor, at the bottom of the transducer sensitivity, middle connecting circuit complexity, liquid level inductive switch and temperature-sensitive switch are not cascaded by lead simultaneously, can't realize the integrated detection of liquid level signal and temperature signal.
Summary of the invention
Deficiency at the prior art existence, the utility model provides a kind of liquid level and temperature sensor, liquid level inductive switch and temperature-sensitive switch are cascaded by lead, detect liquid level signal and temperature signal simultaneously to reach, and the purpose of the connection status of while detecting sensor signal circuit.
The technical solution of the utility model is achieved in that this sensor circuit comprises liquid level inducted switch module, temperature-sensitive switch module, lead main resistor and lead.
The connection of this sensor circuit is: liquid level inducted switch module, temperature-sensitive switch module and lead main resistor are connected by lead.
Wherein the liquid level inducted switch module comprises liquid level inductive switch and resistance, and liquid level inductive switch and resistance are in parallel, and the two is split or integrated.
Wherein the temperature-sensitive switch module comprises temperature-sensitive switch and resistance, and temperature-sensitive switch and resistance are in parallel, and the two is split or integrated.
Wherein the quantity of liquid level inducted switch module is at least 1.
Wherein the quantity of temperature-sensitive switch module is at least 1.
The utility model course of work: the constant pressure source power output end connects the high-side current sampling resistor, the high-side current sampling resistor is the input end of resistance in series Rn and the utility model liquid level and temperature sensor successively, the output terminal of liquid level and temperature sensor is connected to the earth terminal of constant pressure source, liquid level and temperature sensor is put into supervising device (as fire-water pond, fire water box, radiator, fuel tank or oil tank) in, liquid level and temperature to supervising device detect, connecting line between liquid level and temperature sensor and supervising device, the input and the output line that are liquid level and temperature sensor open circuit, during short circuit, the resistance sizes of whole current path changes, change by the electric current on the high-side current sampling resistor, obtain corresponding current signal, when the switch of sensor internal because of outside liquid level and variation of temperature generation conducting, disconnect when changing, the resistance of internal resistance changes thereupon, respective change also will take place in size of current thereupon, obtain corresponding electric current change information by the detection to electric current.
Arrive or leave corresponding position as the magnetic float, its switch is with closure or release, thereby cause two resistance between the extension line to change, the voltage that is applied thereto, electric current will cause corresponding change, to temperature-sensitive switch, when temperature is below or above certain numerical value, closure or release will appear in temperature-sensitive switch, cause two resistance between the extension line to change, the voltage that is applied thereto, corresponding change will take place in electric current, pass through input, amplify, conversion processing circuit is learnt liquid level that it is concrete and temperature information and the fault whether short interruption has taken place.
Advantage of the present utility model: can detect liquid level signal and temperature signal simultaneously by this sensor, and the connection status of direct detecting sensor signal circuit, simple in structure, save input cost and engineering construction cost, reduce the open and-shut mode of signal deteching circuit may command and detection solenoid valve, working sensor is reliable and stable.
Description of drawings
Fig. 1 is 1 one kinds of liquid level and temperature sensor electrical schematic diagrams of the utility model embodiment;
Fig. 2 is 2 one kinds of liquid level and temperature sensor electrical schematic diagrams of the utility model embodiment;
Fig. 3 is 3 one kinds of liquid level and temperature sensor electrical schematic diagrams of the utility model embodiment.
Among the figure: K liquid level inductive switch, S temperature-sensitive switch, Rc lead main resistor, R resistance.
Embodiment
The detailed structure of a kind of liquid level and temperature sensor of the utility model is illustrated in conjunction with the embodiments.
Embodiment 1
This sensor circuit as shown in Figure 1, the quantity that present embodiment is chosen the liquid level inducted switch module is 3, the quantity of temperature-sensitive switch module is 2, the quantity of lead main resistor is 1, and a liquid level inductive switch K and a resistance R compose in parallel a liquid level inducted switch module, a temperature-sensitive switch S and a resistance R and compose in parallel a temperature-sensitive switch module; Wherein the resistance R value is 510 Ω in the first liquid level inducted switch module, the resistance R value is 1K Ω in the second liquid level inducted switch module, the resistance R value is 1.5K Ω in the 3rd liquid level inducted switch module, resistance S value is 1.8K Ω in the first temperature-sensitive switch module, and resistance S value is 5.6K Ω in the second temperature-sensitive switch module; Lead main resistor Rc value is 510 Ω.
The connection of this sensor circuit is: lead main resistor R
CBy lead connect the successively first liquid level inducted switch module, the second liquid level inducted switch module and the 3rd liquid level inducted switch module, the 3rd liquid level inducted switch module is by lead connect the successively first temperature-sensitive switch module and the second temperature-sensitive switch module.
Wherein liquid level inductive switch and resistance are in parallel in the liquid level inducted switch module, the two is split or integrated, when the liquid level inductive switch causes the break-make of switch because of the variation of sensing outside liquid level, to cause the variation of the resistance of whole sensor inside, thereby cause that the electric current and voltage that is applied on the sensor changes, the resistance of each resistance can be adjusted as required, and the number that is parallel with the liquid level inductive switch of resistance also can be adjusted according to actual needs.
Wherein temperature-sensitive switch and resistance are in parallel in the temperature-sensitive switch module, the two is split or integrated, when switch causes the break-make of switch because of sensing outside temperature variation, to cause the variation of the resistance of whole sensor inside, cause that the electric current and voltage that is applied on the sensor changes, the resistance of each resistance is adjusted as required, and the number that is parallel with the temperature-sensitive switch of resistance also can be adjusted according to actual needs.
Arrive or leave corresponding position as the magnetic float, its switch is with closure or release, thereby cause two resistance between the extension line to change, the voltage that is applied thereto, electric current will cause corresponding change, to temperature-sensitive switch, when temperature is below or above certain numerical value, closure or release will appear in temperature-sensitive switch, cause two resistance between the extension line to change, the voltage that is applied thereto, corresponding change will take place in electric current, pass through input, amplify, conversion processing circuit is learnt liquid level that it is concrete and temperature information and the fault whether short interruption has taken place.
Embodiment 2
This sensor circuit as shown in Figure 2, the quantity that present embodiment is chosen the liquid level inducted switch module is 4, the quantity of temperature-sensitive switch module is 1, the quantity of lead main resistor is 2, is the first lead main resistor R
C1With the second lead main resistor R
C2, the liquid level inductive switch is the dry-reed tube switch of band magnetic float.
A this sensor circuit liquid level inductive switch K and resistance R as shown in Figure 2 composes in parallel a liquid level inducted switch module, a temperature-sensitive switch S and a resistance R and composes in parallel a temperature-sensitive switch module; Wherein the resistance R value is 510 Ω in the first liquid level inducted switch module, the resistance R value is 1K Ω in the second liquid level inducted switch module, the resistance R value is 1.5K Ω in the 3rd liquid level inducted switch module, the resistance R value is 1.8K Ω in the 4th liquid level inducted switch module, and resistance S value is 5.6K Ω in the temperature-sensitive switch module; The first lead main resistor R
C1Value is 510 Ω, the second lead main resistor R
C2Value is 2K Ω.
This sensor circuit connects: the first lead main resistor R
C1By lead connect the successively first liquid level inducted switch module, the second liquid level inducted switch module, the 3rd liquid level inducted switch module and the 4th liquid level inducted switch module, the 4th liquid level inducted switch module is by lead series connection temperature-sensitive switch module, and the temperature-sensitive switch module is by the lead second lead main resistor R that connects
C2
This sensor circuit as shown in Figure 3, the quantity that present embodiment is chosen the liquid level inducted switch module is 2, the quantity of temperature-sensitive switch module is 2, the quantity of lead main resistor is 1, the liquid level inductive switch is the dry-reed tube switch of band magnetic float.
A this sensor circuit liquid level inductive switch K and resistance R as shown in Figure 3 composes in parallel a liquid level inducted switch module, a temperature-sensitive switch S and a resistance R and composes in parallel a temperature-sensitive switch module; Wherein the resistance R value is 430 Ω in the first liquid level inducted switch module, and the resistance R value is 630 Ω in the second liquid level inducted switch module, and resistance S value is 1.5K Ω in the first temperature-sensitive switch module, and resistance S value is 3.3K Ω in the second temperature-sensitive switch module; Lead main resistor R
CValue is 1.2K Ω.
The connection of this sensor circuit is: lead main resistor R
CBy lead connect the successively first liquid level inducted switch module and the second liquid level inducted switch module, the second liquid level inducted switch module is by lead connect the successively first temperature-sensitive switch module and the second temperature-sensitive switch module.
Claims (5)
1. liquid level and temperature sensor, it is characterized in that: this sensor comprises liquid level inducted switch module, temperature-sensitive switch module, lead main resistor and lead; The connection of this sensor circuit is: liquid level inducted switch module, temperature-sensitive switch module and lead main resistor are connected by lead.
2. by the described a kind of liquid level and temperature sensor of claim 1, it is characterized in that described liquid level inducted switch module comprises liquid level inductive switch and resistance, liquid level inductive switch and resistance are in parallel, and the two is split or integrated.
3. by the described a kind of liquid level and temperature sensor of claim 1, it is characterized in that described temperature-sensitive switch module comprises temperature-sensitive switch and resistance, temperature-sensitive switch and resistance are in parallel, and the two is split or integrated.
4. by the described a kind of liquid level and temperature sensor of claim 1, it is characterized in that the quantity of described liquid level inducted switch module is at least 1.
5. by the described a kind of liquid level and temperature sensor of claim 1, it is characterized in that the quantity of described temperature-sensitive switch module is at least 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920015220 CN201444065U (en) | 2009-07-10 | 2009-07-10 | Liquid level temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920015220 CN201444065U (en) | 2009-07-10 | 2009-07-10 | Liquid level temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201444065U true CN201444065U (en) | 2010-04-28 |
Family
ID=42548749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920015220 Expired - Fee Related CN201444065U (en) | 2009-07-10 | 2009-07-10 | Liquid level temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201444065U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052798A (en) * | 2016-06-30 | 2016-10-26 | 珠海格力智能装备有限公司 | Liquid level sensing device and liquid level detection method |
| CN109060076A (en) * | 2018-08-02 | 2018-12-21 | 重庆川仪自动化股份有限公司 | Resistance sensor and measuring system |
| EP3754850A1 (en) * | 2019-06-18 | 2020-12-23 | TE Connectivity Norge AS | Sensor assembly for measuring the level of a liquid |
| CN112239840A (en) * | 2020-10-22 | 2021-01-19 | 太仓巨仁光伏材料有限公司 | A go up tin stove liquid level warning induction system for preparing photovoltaic solder strip |
-
2009
- 2009-07-10 CN CN 200920015220 patent/CN201444065U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052798A (en) * | 2016-06-30 | 2016-10-26 | 珠海格力智能装备有限公司 | Liquid level sensing device and liquid level detection method |
| WO2018001155A1 (en) * | 2016-06-30 | 2018-01-04 | 珠海格力智能装备有限公司 | Liquid level sensing device and liquid level detection method |
| CN109060076A (en) * | 2018-08-02 | 2018-12-21 | 重庆川仪自动化股份有限公司 | Resistance sensor and measuring system |
| EP3754850A1 (en) * | 2019-06-18 | 2020-12-23 | TE Connectivity Norge AS | Sensor assembly for measuring the level of a liquid |
| US11300439B2 (en) | 2019-06-18 | 2022-04-12 | Te Connectivity Norge As | Sensor assembly for measuring the level of a liquid |
| CN112239840A (en) * | 2020-10-22 | 2021-01-19 | 太仓巨仁光伏材料有限公司 | A go up tin stove liquid level warning induction system for preparing photovoltaic solder strip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100428 Termination date: 20120710 |