CN210198571U - Temperature measurement monitoring device - Google Patents
Temperature measurement monitoring device Download PDFInfo
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- CN210198571U CN210198571U CN202020076760.1U CN202020076760U CN210198571U CN 210198571 U CN210198571 U CN 210198571U CN 202020076760 U CN202020076760 U CN 202020076760U CN 210198571 U CN210198571 U CN 210198571U
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Abstract
The utility model discloses a temperature measurement monitoring device, which comprises a processor, an infrared temperature measurement probe, a PT100 temperature measurement probe, a display unit, a communication interface circuit, a relay output circuit and a switching value input circuit; the infrared temperature measuring probe and the PT100 temperature measuring probe can acquire the temperature ranging from-50 ℃ to 1030 ℃, the display unit displays the acquired temperature, the communication interface circuit enables the device to have a communication function, the relay output circuit enables the device to control a load through the relay, and the switching value input circuit can convert external on and off states into voltage signals to be transmitted to the processor, so that the device has the functions of switching signal acquisition and control. It is visible, the utility model discloses a temperature measurement monitoring device collects temperature measurement, communication, switching value input and load control function in an organic whole, can satisfy different field user demands.
Description
Technical Field
The utility model relates to an electric control technical field especially relates to a temperature measurement monitoring device.
Background
In the field of power control, monitoring control devices are needed, which usually have a large number of switching value inputs and a large number of passive/active output nodes, but most of these devices do not have a temperature measurement function, especially a non-contact high temperature detection function, such as measuring a high temperature of about 1000 ℃. An ordinary temperature measuring instrument generally only has a low-temperature measuring function and cannot meet the use requirement.
And at present, a control device with the functions of temperature measurement, communication, switching value input, load and the like is not available,
resulting in a limited range of use.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned not enough, the utility model discloses the technical problem that will solve is: provides a multifunctional temperature measurement
The monitoring device integrates the functions of temperature measurement, communication, switching value input and load control, and can be full of
Meets the use requirements of different fields.
In order to solve the technical problem, the technical scheme of the utility model is that:
a temperature measurement monitoring device comprises a processor and further comprises: the infrared temperature measuring probe is used for measuring high temperature and is electrically connected with the processor through a current-voltage conversion circuit, and the current-voltage conversion circuit is used for converting temperature signals collected by the infrared temperature measuring probe into corresponding voltage signals and transmitting the voltage signals to the processor; the PT100 temperature measurement probe is used for measuring the ambient temperature, the PT100 temperature measurement probe is electrically connected with the processor through a signal processing circuit, and the signal processing circuit is used for converting the resistance value of the PT100 temperature measurement probe, which changes along with the temperature change, into a corresponding voltage signal and transmitting the voltage signal to the processor; the display unit is electrically connected with the processor, and the processor is used for controlling the display unit to display the temperatures measured by the infrared temperature measuring probe and the PT100 temperature measuring probe; and the processor
A communication interface circuit electrically connected, the communication interface circuit comprising a communication interface; a relay output circuit electrically connected to the processor, the relay output circuit including a relay output; and the switching value input circuit is electrically connected with the processor and comprises a switching value input end.
The device comprises a main circuit board and a display circuit board, wherein the processor, the current-voltage conversion circuit, the signal processing circuit, the communication interface circuit, the relay output circuit and the switching value input circuit are arranged on the main circuit board, and the display unit is arranged on the display circuit board.
Preferably, the communication interface circuit is a 485 interface circuit.
Preferably, the device comprises two paths of relay output circuits which are respectively and electrically connected with the processor.
Preferably, the device comprises six switching value input circuits respectively electrically connected with the processor.
Preferably, the device further comprises a switching power supply electrically connected with the processor, wherein the switching power supply comprises an input end, a +5V output end, a-12V output end, a +12V output end and a +24V output end; and the switching power supply is arranged on the main circuit board.
Preferably, the display unit comprises a nixie tube and a driving circuit which are electrically connected, and the driving circuit is electrically connected with the processor.
Preferably, the infrared temperature measuring probe is electrically connected with the current-voltage conversion circuit through two cables, one cable is used for transmitting electric signals, and the other cable is used for supplying power.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
the utility model discloses a temperature measurement monitoring device, including the treater, be used for measuring the infrared temperature probe of high temperature, be used for measuring the PT100 temperature probe of ambient temperature, display element, communication interface circuit, relay output circuit and switching value input circuit; the infrared temperature measuring probe is electrically connected with the processor through the current-voltage conversion circuit, and the current-voltage conversion circuit is used for converting temperature signals collected by the infrared temperature measuring probe into corresponding voltage signals and transmitting the voltage signals to the processor; the PT100 temperature measuring probe is electrically connected with the processor through the signal processing circuit, the resistance value of the PT100 temperature measuring probe, which changes along with the temperature change, is converted into a corresponding voltage signal and transmitted to the processor, and the processor controls the display unit to display the temperature according to the electric signals transmitted by the current-voltage conversion circuit and the signal processing circuit. Because of infrared temperature probe can be at 1 meter within range non-contact detection temperature to gather the temperature range and reach 1000 ℃, PT100 temperature probe can gather ambient temperature, and minimum temperature to-50 ℃ make the utility model discloses a temperature measurement monitoring device possesses the temperature measurement function, and the temperature range is from-50 ℃ to 1030 ℃, can satisfy the different temperature measurement demands of multi-field.
The communication interface circuit makes the device have communication function.
The relay output circuit makes the device control the load through the relay.
The switching value input circuit can convert external on and off states into voltage signals and transmit the voltage signals to the processor, so that the device has the functions of switching signal acquisition and control.
To sum up, the utility model discloses a temperature measurement monitoring device, with infrared temperature probe, PT100 temperature probe, communication interface, switching value input control, load control and the temperature display is integrated integrative, makes this device have multiple functions concurrently to satisfy the user demand in many fields.
Drawings
FIG. 1 is a schematic structural view of the temperature measurement monitoring device of the present invention;
FIG. 2 is a schematic diagram of the connection of an infrared temperature probe and a current-voltage conversion circuit;
FIG. 3 is a schematic view of the arrangement inside the temperature measuring and monitoring device of the present invention;
fig. 4 is a circuit diagram of a signal processing circuit according to the present invention;
in the figure: the temperature measuring device comprises a 1-infrared temperature measuring probe, a 2-PT100 temperature measuring probe, a 3-nixie tube, a 4-communication line, a 5-power line, a 6-switching value input line, a 7-infrared cable, a 8-main circuit board, a 9-display circuit board and a 10-PT100 cable.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 4, a temperature measurement monitoring device includes a processor, an infrared temperature measurement probe for measuring a high temperature, a PT100 temperature measurement probe for measuring an ambient temperature, and a display unit. The infrared temperature measuring probe is electrically connected with the processor through the current-voltage conversion circuit, and the current-voltage conversion circuit is used for converting temperature signals collected by the infrared temperature measuring probe into corresponding voltage signals and transmitting the voltage signals to the processor; the PT100 temperature measuring probe is electrically connected with the processor through the signal processing circuit, and the resistance value of the PT100 temperature measuring probe, which changes along with the temperature change, is converted into a corresponding voltage signal to be transmitted to the processor; the display unit is electrically connected with the processor, and the processor is used for controlling the display unit to display the temperature detected by the infrared temperature measuring probe and the PT100 temperature measuring probe. Because of infrared temperature probe can be at 1 meter within range non-contact detection temperature to gather the temperature range and reach 1000 ℃, PT100 temperature probe can gather ambient temperature, and minimum temperature to-50 ℃ make the utility model discloses a temperature measurement monitoring device possesses the temperature measurement function, and the temperature range is from-50 ℃ to 1030 ℃, can satisfy the different temperature measurement demands in many fields.
As shown in fig. 3, the apparatus includes a main circuit board on which a processor, a current-voltage conversion circuit, and a signal processing circuit are provided, and a display unit provided on the display circuit board.
As shown in fig. 1 and fig. 3, the apparatus further includes a communication interface circuit electrically connected to the processor, the communication interface circuit includes a communication interface, and the communication interface circuit is disposed on the main circuit board, wherein the communication interface circuit is preferably a 485 interface circuit. The 485 interface circuit comprises a 485 communication chip, the 485 interface circuit realizes the two-wire 485 communication function, adopts multiple MODBUS protocols and is suitable for multiple occasions; wherein Modbus is a serial communication protocol. The communication interface circuit enables the device to have a communication function.
As shown in fig. 3, the main circuit board is further provided with two relay output circuits respectively electrically connected with the processor, and each relay output circuit comprises a relay output end; each relay is provided with a load capacity of 220V/5A. The relay output circuit makes the device drive the relay, and controls the load through the relay.
As shown in fig. 3, six switching value input circuits are further disposed on the main circuit board, each switching value input circuit is electrically connected to the processor, and each switching value input circuit includes a switching value input terminal. And the six switching value input circuits convert external on and off states into voltage signals and send the voltage signals to the processor for judgment. The six-way switching value input circuit enables the device to have the function of detecting the input state signal.
As shown in fig. 3, the main circuit board is further provided with a switching power supply, and the switching power supply is electrically connected with the processor and includes an input terminal, +5V output terminal, -12V output terminal, +12V output terminal, and +24V output terminal. The input 220V alternating current is converted into +5V, +12V, -12V, +24V direct current power supply to be provided for each circuit.
As shown in fig. 1, the display unit in this example includes a nixie tube and a driving circuit electrically connected to the processor, and five 8-segment nixie tubes are used to display the temperature. The display unit is not limited to the nixie tube listed above, and a display screen can be used.
As shown in fig. 2, the infrared temperature measuring probe is electrically connected to the current-voltage conversion circuit through two cables, and the two cables are used for transmitting electrical signals and supplying power. The current-voltage conversion circuit used in the embodiment comprises an RCV420 chip, wherein the positive phase input end of the RCV420 chip is connected with one end of a cable, the other end of the cable is connected with an infrared temperature measurement probe, and the output end of the RCV420 chip is electrically connected with a processor. The RCV420 chip can convert 4-20 mA current into 0-5V voltage.
In fig. 2, 7 are two cables of the infrared temperature measuring probe. The RCV420 chip corresponds to a in fig. 2. After the switching power supply is connected with 220V alternating current, the +24V voltage is output to the infrared temperature measuring probe, which is equivalent to a battery (+ 5V) in fig. 2, and the RCV420 chip works by utilizing the +12V voltage and the-12V voltage output by the switching power supply.
As shown in FIG. 4, the circuit is a bridge type temperature measuring circuit, and two cables of the PT100 temperature measuring probe are respectively connected with a PT _ PINA1 end and a PT _ PINA2 end in the bridge type temperature measuring circuit. The bridge temperature measuring circuit adopts a TL431 chip U1 and a divider resistor to generate a 4.22V reference power supply; the resistors R1, R2, PT100 and R3 form a measuring bridge, wherein R3 is a high-precision 82-omega resistor, when the resistance value of the PT100 is unequal to that of R3, the measuring bridge outputs a mV-level voltage signal, the mV-level voltage signal is amplified by a chip U2 of TP1544A to be an ideal voltage signal Vout and transmitted to an A/D port of the processor, and the processor determines the resistance value of the PT100 by judging the voltage, so that the temperature value is measured.
The utility model discloses because of using infrared temperature probe to carry out the non-contact temperature measurement, make it still have following advantage:
1. the non-contact measurement does not need to contact the inside or the surface of the measured temperature field, so that the state of the measured temperature field cannot be interfered, and the device is not damaged by the temperature field;
2. the temperature measurement range is wide, and the device can work at normal temperature or under the allowed condition because the device adopts non-contact temperature measurement, so that the device is not in a higher or lower temperature field;
3. the temperature measuring speed is high, namely the response time is high, and the temperature can be fixed in a short time as long as the infrared radiation of the target is received;
4. the accuracy is high, the infrared temperature measurement cannot damage the temperature distribution of an object as the contact temperature measurement, and therefore the measurement precision is high;
5. the sensitivity is high, the radiation energy can be greatly changed as long as the temperature of the object is slightly changed, the temperature can be easily measured, the temperature measurement and the temperature distribution measurement of a small temperature field and the temperature measurement of a moving object or a rotating object can be carried out, the use is safe, and the service life is long.
The above-mentioned preferred embodiments of the present invention are not intended to limit the present invention, and any modifications made within the spirit and principles of the present invention, equivalent to the improvement of the temperature monitoring device, should be included within the scope of the present invention.
Claims (8)
1. The utility model provides a temperature measurement monitoring device, includes the treater, its characterized in that still includes:
the infrared temperature measuring probe is used for measuring high temperature and is electrically connected with the processor through a current-voltage conversion circuit, and the current-voltage conversion circuit is used for converting temperature signals collected by the infrared temperature measuring probe into corresponding voltage signals and transmitting the voltage signals to the processor;
the PT100 temperature measurement probe is used for measuring the ambient temperature, the PT100 temperature measurement probe is electrically connected with the processor through a signal processing circuit, and the signal processing circuit is used for converting the resistance value of the PT100 temperature measurement probe, which changes along with the temperature change, into a corresponding voltage signal and transmitting the voltage signal to the processor;
the display unit is electrically connected with the processor, and the processor is used for controlling the display unit to display the temperatures measured by the infrared temperature measuring probe and the PT100 temperature measuring probe;
a communication interface circuit electrically connected to the processor, the communication interface circuit comprising a communication interface;
a relay output circuit electrically connected to the processor, the relay output circuit including a relay output;
and the switching value input circuit is electrically connected with the processor and comprises a switching value input end.
2. The temperature measuring and monitoring device according to claim 1, wherein the device comprises a main circuit board and a display circuit board, the processor, the current-voltage converting circuit, the signal processing circuit, the communication interface circuit, the relay output circuit and the switching value input circuit are arranged on the main circuit board, and the display unit is arranged on the display circuit board.
3. The temperature measurement monitoring device according to claim 1, wherein the communication interface circuit is a 485 interface circuit.
4. The temperature measurement monitoring device of claim 1, wherein the device comprises two relay output circuits electrically connected to the processor.
5. The temperature monitoring device of claim 1, wherein the device includes six switching value input circuits each electrically connected to the processor.
6. The thermometric monitoring apparatus of claim 2, further comprising a switching power supply electrically connected to the processor, the switching power supply comprising an input, +5V output, -12V output, +12V output, and +24V output;
and the switching power supply is arranged on the main circuit board.
7. The temperature measuring and monitoring device according to any one of claims 1 to 6, wherein the display unit comprises a nixie tube and a driving circuit electrically connected, and the driving circuit is electrically connected with the processor.
8. The temperature measuring and monitoring device of claim 7, wherein the infrared temperature measuring probe is electrically connected to the current-voltage conversion circuit through two cables.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020076760.1U CN210198571U (en) | 2020-01-15 | 2020-01-15 | Temperature measurement monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020076760.1U CN210198571U (en) | 2020-01-15 | 2020-01-15 | Temperature measurement monitoring device |
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| CN210198571U true CN210198571U (en) | 2020-03-27 |
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| CN202020076760.1U Active CN210198571U (en) | 2020-01-15 | 2020-01-15 | Temperature measurement monitoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763814A (en) * | 2020-11-25 | 2021-05-07 | 国网宁夏电力有限公司检修公司 | Novel special fire control sensor of electric power |
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2020
- 2020-01-15 CN CN202020076760.1U patent/CN210198571U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763814A (en) * | 2020-11-25 | 2021-05-07 | 国网宁夏电力有限公司检修公司 | Novel special fire control sensor of electric power |
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