CN103499397A - Wireless intelligent temperature measuring and control instrument - Google Patents
Wireless intelligent temperature measuring and control instrument Download PDFInfo
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- CN103499397A CN103499397A CN201310469449.8A CN201310469449A CN103499397A CN 103499397 A CN103499397 A CN 103499397A CN 201310469449 A CN201310469449 A CN 201310469449A CN 103499397 A CN103499397 A CN 103499397A
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Abstract
The invention relates to a wireless intelligent temperature measuring and control instrument, which comprises a step-down circuit, a high and low frequency filter circuit, a signal operational amplifying circuit, a reference voltage comparison circuit, a relay drive circuit, a data comparison circuit, a power supply control circuit, a step-down rectification filter circuit and a passive temperature measurement probe. The input end of the step-down circuit is wirelessly connected with a sensor of the passive temperature measurement probe, and the step-down circuit, the high and low frequency filter circuit, the signal operational amplifying circuit, the reference voltage comparison circuit and the relay drive circuit are electrically connected in sequence; the input end of the step-down rectification filter circuit is a power supply connecting terminal, and the step-down rectification filter circuit, the power supply control circuit, the data comparison circuit and the relay drive circuit are electrically connected in sequence. The wireless intelligent temperature measuring and control instrument provided by the invention has the advantages that the test precision is high, maintenance and replacement do not need to be performed frequently, and the use cost is low.
Description
Technical field
The present invention is specifically related to a kind of intelligent wireless temperature measurement-control instrument.
Background technology
Existing high-voltaghe compartment and electric cabinet can produce very high temperature in actual moving process, need to be to its Real-Time Monitoring, to prevent that high-voltaghe compartment and electric cabinet from operating at too high temperature, the temperature test of high-voltaghe compartment and electric cabinet probe was all in the situation that wired connection is uploaded to main frame analyzed by temperature signal in the past.
In the process of equipment operation, due to the close high-temperature part of wire that the temperature test probe connects, can impel the flexible circuit conductor corrosion and ageing, therefore, need often safeguard and change, and in maintenance and Renewal process, if the maintainer does not slightly note bringing the potential safety hazards such as electric shock; In addition, in the process of design, the designer also will consider to walk the reserved of line position on product, for design brings a lot of troubles; And temperature test probe is directly to be connected with temperature controller by wire, not only increased material cost, and electric wire is understood the coupled interference of increase between electric after bundling.
Due to the sensor output of described temperature test probe is analog quantity, need to and then be transferred to temperature controller through a very long section lead, will cause like this signal to weaken, the temperature controller that allows that can not be sensitive receives signal, thereby affected main frame, signal is differentiated and frequently to be made mistakes, finally cause product at high temperature to move and the phenomenon that occurs burning.
Summary of the invention
The objective of the invention is: a kind of intelligent measurement and control of temperature instrument of radio communication is provided, and not only measuring accuracy is high, safe, and does not need often to safeguard and change, and use cost is low, to overcome the deficiencies in the prior art.
In order to achieve the above object, technical scheme of the present invention: a kind of intelligent wireless temperature measurement-control instrument,
Comprise reduction voltage circuit, low-and high-frequency filtering circuit, signal discharge circuit, reference voltage comparator circuit, relay drive circuit, data comparison circuit, power control circuit and decompression rectifier filter circuit and passive temperature probe;
The input end of described reduction voltage circuit is connected with the sensor wireless of passive temperature probe, the output terminal of reduction voltage circuit is electrically connected to the input end of low-and high-frequency filtering circuit, the output terminal of low-and high-frequency filtering circuit is electrically connected to the input end of signal discharge circuit, the output terminal of signal discharge circuit is electrically connected to the input end of reference voltage comparator circuit, the output terminal of reference voltage comparator circuit is electrically connected to the corresponding link of relay drive circuit, and power control circuit is electrically connected to the corresponding link of reference voltage comparator circuit;
The input end of described decompression rectifier filter circuit is power connector end, the output terminal of decompression rectifier filter circuit is electrically connected to the input end of power control circuit, the output terminal of power control circuit is electrically connected to the input end of data comparison circuit, and the output terminal of data comparison circuit is electrically connected to the corresponding link of relay drive circuit.
In technique scheme, described power control circuit comprises power circuit and filtering circuit, and the output terminal of power circuit is electrically connected to the input end of filtering circuit; The output terminal of decompression rectifier filter circuit is electrically connected to the input end of power circuit, and the input end of reference voltage comparator circuit and data comparison circuit is electrically connected to the corresponding output terminal of filtering circuit respectively.
In technique scheme, described power circuit comprises the first power supply integrated chip U3, second source integrated chip U4 and the 3rd power supply integrated chip U5, the input end of the input end of the input end of the first power supply integrated chip U3, second source integrated chip U4 and the 3rd power supply integrated chip U5 is electrically connected to the corresponding output terminal of decompression rectifier filter circuit respectively, and the output terminal of the output terminal of the first power supply integrated chip U3, second source integrated chip U4 and the output terminal of the 3rd power supply integrated chip U5 are electrically connected to the corresponding input end of filtering circuit respectively.
In technique scheme, the model of described the first power supply integrated chip U3 is 7805, and the model that the model of second source integrated chip U4 is 7905, the three power supply integrated chip U5 is 7812.
In technique scheme, described decompression rectifier filter circuit comprises reduction voltage circuit, rectification circuit and filtering circuit, the input end of reduction voltage circuit is power connector end, the output terminal of reduction voltage circuit is electrically connected to the input end of rectification circuit, the output terminal of rectification circuit is electrically connected to the input end of filtering circuit, and the output terminal of filtering circuit is electrically connected to the input end of power control circuit.
In technique scheme, described reduction voltage circuit comprises transformer T, rectification circuit comprises the first rectifier bridge D1 and the second rectifier bridge D2, and the secondary coil T1 of transformer is electrically connected to the input end of the first rectifier bridge D1, and the secondary coil T2 of transformer is electrically connected to the input end of the second rectifier bridge D2.
The good effect that the present invention has is: after adopting above-mentioned intelligent wireless temperature measurement-control instrument, during use, passive temperature probe is arranged on to the position that needs thermometric in high-voltaghe compartment or electric cabinet, the high-tension electricity of 220v is by step-down rectifier filtering, be converted to direct current, then the safety value of setting with data comparison circuit is compared, in equipment running process, rising along with temperature, the sensor output digit signals of passive temperature probe sends to reduction voltage circuit with wireless mode, carry out successively low-and high-frequency filtering and signal and amplify processing, and compare with the reference voltage that the reference voltage comparator circuit is set, if excess Temperature, relay drive circuit output relay switching value drives peripheral equipment control, by external unit, given the alarm, temperature in the operational process of energy real-time watch device of the present invention, not only measuring accuracy is high, safe, and do not require frequent maintenance and replacement, reduced use cost.
The accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of a kind of concrete enforcement of the present invention.
Embodiment
Below in conjunction with accompanying drawing and the embodiment that provides, the present invention is further illustrated, but be not limited to this.
As shown in Figure 1, a kind of intelligent wireless temperature measurement-control instrument, comprise reduction voltage circuit 1, low-and high-frequency filtering circuit 2, signal discharge circuit 3, reference voltage comparator circuit 4, relay drive circuit 5, data comparison circuit 6, power control circuit 7, decompression rectifier filter circuit 8 and passive temperature probe 9;
The input end of described reduction voltage circuit 1 is connected with the sensor wireless of passive temperature probe 9, the output terminal of reduction voltage circuit 1 is electrically connected to the input end of low-and high-frequency filtering circuit 2, the output terminal of low-and high-frequency filtering circuit 2 is electrically connected to the input end of signal discharge circuit 3, the output terminal of signal discharge circuit 3 is electrically connected to the input end of reference voltage comparator circuit 4, the output terminal of reference voltage comparator circuit 4 is electrically connected to the corresponding link of relay drive circuit 5, and power control circuit 7 is electrically connected to the corresponding link of reference voltage comparator circuit 4;
The input end of described decompression rectifier filter circuit 8 is power connector end, the output terminal of decompression rectifier filter circuit 8 is electrically connected to the input end of power control circuit 7, the output terminal of power control circuit 7 is electrically connected to the input end of data comparison circuit 6, and the output terminal of data comparison circuit 6 is electrically connected to the corresponding link of relay drive circuit 5.
The model that passive temperature probe 9 of the present invention is preferentially selected is ZY6000T, and it can be fixed on the thermal source object, utilizes conduction principle, and the central processing unit that the heat source temperature of test is inner by it sends wireless instructions.
As shown in Figure 1, described power control circuit 7 comprises power circuit 7-1 and filtering circuit 7-2, and the output terminal of power circuit 7-1 is electrically connected to the input end of filtering circuit 7-2; The output terminal of decompression rectifier filter circuit 8 is electrically connected to the input end of power circuit 7-1, and the input end of reference voltage comparator circuit 4 and data comparison circuit 6 is electrically connected to the corresponding output terminal of filtering circuit 7-2 respectively.
As shown in Figure 1, described power circuit 7-1 comprises the first power supply integrated chip U3, second source integrated chip U4 and the 3rd power supply integrated chip U5, the input end of the input end of the input end of the first power supply integrated chip U3, second source integrated chip U4 and the 3rd power supply integrated chip U5 is electrically connected to the corresponding output terminal of decompression rectifier filter circuit 8 respectively, and the output terminal of the output terminal of the first power supply integrated chip U3, second source integrated chip U4 and the output terminal of the 3rd power supply integrated chip U5 are electrically connected to the corresponding input end of filtering circuit 7-2 respectively.
The model of described the first power supply integrated chip U3 is 7805, and the model that the model of second source integrated chip U4 is 7905, the three power supply integrated chip U5 is 7812.
Described decompression rectifier filter circuit 8 comprises reduction voltage circuit 8-1, rectification circuit 8-2 and filtering circuit 8-3, the input end of reduction voltage circuit 8-1 is power connector end, the output terminal of reduction voltage circuit 8-1 is electrically connected to the input end of rectification circuit 8-2, the output terminal of rectification circuit 8-2 is electrically connected to the input end of filtering circuit 8-3, and the output terminal of filtering circuit 8-3 is electrically connected to the input end of power control circuit 7.
Described reduction voltage circuit 8-1 comprises transformer T, rectification circuit 8-2 comprises the first rectifier bridge D1 and the second rectifier bridge D2, and the secondary coil T1 of transformer is electrically connected to the input end of the first rectifier bridge D1, the secondary coil T2 of transformer is electrically connected to the input end of the second rectifier bridge D2.
The course of work of the present invention, during use, passive temperature probe 9 is arranged on to the position that needs thermometric in high-voltaghe compartment or electric cabinet, the high-tension electricity of 220v is by decompression rectifier filter circuit 8 step-down rectifier filtering, be converted to direct current and deliver to power control circuit 7, and the safety value of setting with data comparison circuit 6 is compared, in equipment running process, rising along with temperature, the sensor of passive temperature probe 9 can send in reduction voltage circuit 1 with binary wireless mode, carrying out low-and high-frequency filtering and signal discharge circuit 3 by low-and high-frequency filtering circuit 2 carries out signal and amplifies and process, and compare with the reference voltage that reference voltage comparator circuit 4 is set, if excess Temperature, relay drive circuit 5 output relay switching values drive peripheral equipment control, and give the alarm, temperature in the operational process of energy real-time watch device of the present invention, not only measuring accuracy is high, safe, do not require frequent maintenance and replacement yet, reduced use cost.
Claims (6)
1. an intelligent wireless temperature measurement-control instrument is characterized in that:
Comprise reduction voltage circuit (1), low-and high-frequency filtering circuit (2), signal discharge circuit (3), reference voltage comparator circuit (4), relay drive circuit (5), data comparison circuit (6), power control circuit (7), decompression rectifier filter circuit (8) and passive temperature probe (9);
The input end of described reduction voltage circuit (1) is connected with the sensor wireless of passive temperature probe (9), the output terminal of reduction voltage circuit (1) is electrically connected to the input end of low-and high-frequency filtering circuit (2), the output terminal of low-and high-frequency filtering circuit (2) is electrically connected to the input end of signal discharge circuit (3), the output terminal of signal discharge circuit (3) is electrically connected to the input end of reference voltage comparator circuit (4), the output terminal of reference voltage comparator circuit (4) is electrically connected to the corresponding link of relay drive circuit (5), power control circuit (7) is electrically connected to the corresponding link of reference voltage comparator circuit (4),
The input end of described decompression rectifier filter circuit (8) is power connector end, the output terminal of decompression rectifier filter circuit (8) is electrically connected to the input end of power control circuit (7), the output terminal of power control circuit (7) is electrically connected to the input end of data comparison circuit (6), and the output terminal of data comparison circuit (6) is electrically connected to the corresponding link of relay drive circuit (5).
2. intelligent wireless temperature measurement-control instrument according to claim 1, it is characterized in that: described power control circuit (7) comprises power circuit (7-1) and filtering circuit (7-2), and the output terminal of power circuit (7-1) is electrically connected to the input end of filtering circuit (7-2); The output terminal of decompression rectifier filter circuit (8) is electrically connected to the input end of power circuit (7-1), and the input end of reference voltage comparator circuit (4) and data comparison circuit (6) is electrically connected to the corresponding output terminal of filtering circuit (7-2) respectively.
3. intelligent wireless temperature measurement-control instrument according to claim 2, it is characterized in that: described power circuit (7-1) comprises the first power supply integrated chip U3, second source integrated chip U4 and the 3rd power supply integrated chip U5, the input end of the first power supply integrated chip U3, the input end of the input end of second source integrated chip U4 and the 3rd power supply integrated chip U5 is electrically connected to the corresponding output terminal of decompression rectifier filter circuit (8) respectively, the output terminal of the first power supply integrated chip U3, the output terminal of the output terminal of second source integrated chip U4 and the 3rd power supply integrated chip U5 is electrically connected to the corresponding input end of filtering circuit (7-2) respectively.
4. intelligent wireless temperature measurement-control instrument according to claim 3, it is characterized in that: the model of described the first power supply integrated chip U3 is 7805, the model that the model of second source integrated chip U4 is 7905, the three power supply integrated chip U5 is 7812.
5. intelligent wireless temperature measurement-control instrument according to claim 1, it is characterized in that: described decompression rectifier filter circuit (8) comprises reduction voltage circuit (8-1), rectification circuit (8-2) and filtering circuit (8-3), the input end of reduction voltage circuit (8-1) is power connector end, the output terminal of reduction voltage circuit (8-1) is electrically connected to the input end of rectification circuit (8-2), the output terminal of rectification circuit (8-2) is electrically connected to the input end of filtering circuit (8-3), and the output terminal of filtering circuit (8-3) is electrically connected to the input end of power control circuit (7).
6. intelligent wireless temperature measurement-control instrument according to claim 5, it is characterized in that: described reduction voltage circuit (8-1) comprises transformer T, rectification circuit (8-2) comprises the first rectifier bridge D1 and the second rectifier bridge D2, and the secondary coil T1 of transformer is electrically connected to the input end of the first rectifier bridge D1, the secondary coil T2 of transformer is electrically connected to the input end of the second rectifier bridge D2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310469449.8A CN103499397A (en) | 2013-10-10 | 2013-10-10 | Wireless intelligent temperature measuring and control instrument |
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| CN201310469449.8A CN103499397A (en) | 2013-10-10 | 2013-10-10 | Wireless intelligent temperature measuring and control instrument |
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| CN103499397A true CN103499397A (en) | 2014-01-08 |
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| FR2641405A1 (en) * | 1988-12-30 | 1990-07-06 | Lenoir Raoul Ets | Device for monitoring the temperature of a coil former supplied with direct current, especially an electromagnet coil former |
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Patent Citations (9)
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| FR2641405A1 (en) * | 1988-12-30 | 1990-07-06 | Lenoir Raoul Ets | Device for monitoring the temperature of a coil former supplied with direct current, especially an electromagnet coil former |
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| CN103117662A (en) * | 2013-03-08 | 2013-05-22 | 滁州学院 | PWM (pulse width modulation) chopping NC (numerical control) AC (Alternating Current) power supply |
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Application publication date: 20140108 |