CN214224383U - Special temperature measuring instrument - Google Patents
Special temperature measuring instrument Download PDFInfo
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- CN214224383U CN214224383U CN202120532347.6U CN202120532347U CN214224383U CN 214224383 U CN214224383 U CN 214224383U CN 202120532347 U CN202120532347 U CN 202120532347U CN 214224383 U CN214224383 U CN 214224383U
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- special temperature
- pressure sensor
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Abstract
The utility model provides a special temperature measuring instrument, belonging to the technical field of seawater measurement, which comprises a shell, a sealing cover and a circuit board; the end part of the shell is provided with a connecting part, the connecting part is provided with a first opening part along the axis, a fixed lining is poured in the shell, and a wire channel is reserved on the fixed lining along the axis; the sealing cover is provided with an inner cavity and an outer cavity in sequence from inside to outside, the outer cavity is in threaded connection with the connecting portion, in practical application, the pressure sensor is used for detecting a pressure value of seawater, the thermistor is used for detecting a temperature value of the seawater, the pressure sensor and the thermistor respectively send the detected pressure value and temperature value to the amplifying filter, the pressure value and temperature value are sent to the analog-to-digital converter after filtering processing of the amplifying filter, digital signals are converted by the analog-to-digital converter and sent to the main control chip, the main control chip is communicated with a user through the RS-232 communication chip, and the pressure value and temperature value of the seawater can be sent to the user.
Description
Technical Field
The utility model discloses the seawater measurement technology field particularly, relates to a special temperature measuring instrument.
Background
Oceans are very important to strategic positions of coastal national social and economic development and national safety, and the coastline of China is long and the sea area is wide, so that the oceans have great significance for research, development and utilization of oceans; the detection device who commonly uses is temperature sensor in sea water temperature, and when temperature sensor placed and measured sea water temperature in the sea water, along with transferring the increase of degree of depth, pressure also can be bigger and bigger, and the stone sand in the ocean, plankton also can form certain impact force to temperature sensor, consequently, temperature sensor's probe wall is than thick, can influence the response speed of the sea water temperature that temperature sensor detected.
At present, the requirement of a high-precision temperature sensor is high in China, then the high-precision temperature sensor starts late in China, due to the fact that the high-precision temperature sensor is required by special equipment and is subjected to reasons such as appearance and size, the existing high-precision temperature sensor is poor in confidentiality, an internal circuit is often short-circuited, the detected numerical value is low in accuracy, and great difficulty is brought to seawater measurement.
SUMMERY OF THE UTILITY MODEL
In order to compensate above not enough, the utility model provides a special temperature measuring instrument aims at solving the current poor and not high problem of numerical value accuracy that detects of high accuracy temperature sensor security.
The utility model discloses a realize like this:
the utility model provides a special temperature measuring instrument, include:
the cable connector comprises a shell, wherein a connecting part is arranged at the end part of the shell, a first opening part is arranged on the connecting part along the axis, a fixed lining is poured in the shell, and a wire channel is reserved on the fixed lining along the axis;
the sealing cover is sequentially provided with an inner cavity and an outer cavity from inside to outside, the outer cavity is in threaded connection with the connecting part, the inner cavity is connected with a connector through packaging glue, the top of the sealing cover is provided with a second opening part communicated with the inner cavity, and the connector is respectively connected with a pressure sensor and a thermistor through a first lead and a second lead;
the circuit board is arranged below the fixed lining, and a voltage reduction chip, an RS-232 communication chip, a main control chip, an analog-to-digital converter and an amplification filter are respectively installed on the circuit board.
In an embodiment of the present invention, a rechargeable battery is disposed below the circuit board.
In an embodiment of the present invention, the joint is provided with a seal ring between the inner cavity and the joint.
The utility model discloses an in one embodiment, rechargeable battery's output with step-down chip input electricity is connected, step-down chip with analog to digital converter's output all with main control chip's input communication connection, main control chip's output with RS-232 communication chip's input communication connection, pressure sensor with thermistor's output with amplifier's input communication connection, amplifier's output with analog to digital converter's input communication connection.
In an embodiment of the present invention, the fixed lining is made of vulcanized rubber.
In an embodiment of the present invention, the pressure sensor is a piezoresistive pressure sensor.
In an embodiment of the present invention, the housing employs a laser welding technique to ensure sealing.
In an embodiment of the present invention, the encapsulation adhesive is epoxy adhesive.
In an embodiment of the present invention, an insulating glue is bonded between the first wire and the joint and between the second wire and the joint.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the sealing cover is detachably connected with the connecting part through threads, so that the connecting part of the wire inside the sealing cover has strong sealing performance, and can be conveniently and timely replaced under the condition that the connector is damaged, and waiting time is saved.
(2) In practical application, the pressure sensor is used for detecting the pressure value of seawater, the thermistor is used for detecting the temperature value of seawater, the pressure sensor and the thermistor respectively send the detected pressure value and temperature value to the amplifying filter, the pressure value and temperature value are sent to the analog-to-digital converter through filtering processing of the amplifying filter, digital signals are converted by the analog-to-digital converter and sent to the main control chip, the main control chip is communicated with a user through the RS-232 communication chip, and the pressure value and temperature value of seawater can be sent to the user.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a special temperature measuring instrument according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a circuit board structure of a special temperature measuring instrument according to an embodiment of the present invention.
Description of reference numerals: 10-shell, 11-connecting part, 111-first opening part, 12-fixed lining, 121-lead channel, 13-rechargeable battery, 20-sealing cover, 21-outer cavity, 22-inner cavity, 221-packaging adhesive, 222-second opening part, 23-joint, 24-sealing ring, 25-pressure sensor, 251-first lead, 26-thermistor, 261-second lead, 30-circuit board, 31-voltage reduction chip, 32-RS-232 communication chip, 33-main control chip, 34-analog-digital converter and 35-amplifying filter.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Examples
Referring to the attached drawings 1-2, the utility model provides a technical scheme: a special temperature measuring instrument comprises a shell 10, a sealing cover 20 and a circuit board 30;
referring to fig. 1-2, a connecting portion 11 is disposed at an end of a housing 10, the connecting portion 11 has a first opening 111 along an axis, a fixed liner 12 is poured into the housing 10, and a wire passage 121 is reserved along the axis of the fixed liner 12; the sealing cover 20 is sequentially provided with an inner cavity 22 and an outer cavity 21 from inside to outside, the outer cavity 21 is in threaded connection with the connecting part 11, the inner cavity 22 is bonded with a joint 23 through packaging glue 221, the top of the sealing cover 20 is provided with a second opening part 222 communicated with the inner cavity 22, and the joint 23 is respectively connected with a pressure sensor 25 and a thermistor 26 through a first lead 251 and a second lead 261; the circuit board 30 is disposed below the fixed lining 12, and the voltage reduction chip 31, the RS-232 communication chip 32, the main control chip 33, the analog-to-digital converter 34 and the amplification filter 35 are respectively mounted on the circuit board 30.
In this embodiment, the sealing cover 20 is detachably connected to the connecting portion 11 through a screw thread, so that the wire connecting portion inside the sealing cover 20 has a strong sealing performance, and can be replaced in time when the connector 23 is damaged, thereby saving the waiting time.
It should be noted that the thermistor 26 is made of oxides of high-purity transition metals such as Mn, Cu, and Ni through precipitation, pulverization, isostatic pressing, and high-temperature sintering at 1200-1400 ℃, and various types of thermistors 26 are made by combining advanced semiconductor cutting and scribing processes, glass sealing, and epoxy processes.
As an embodiment of the present invention, further, a rechargeable battery 13 is disposed below the circuit board 30; can provide sufficient power supply for the instrument and is convenient for the instrument to carry.
As an embodiment of the present invention, further, a sealing ring 24 is disposed between the joint 23 and the inner cavity 22; the sealability between the joint 23 and the sealing cover 20 is improved to prevent moisture permeation.
As an embodiment of the present invention, further, the output end of the rechargeable battery 13 is electrically connected to the input end of the voltage-reducing chip 31, the output ends of the voltage-reducing chip 31 and the analog-to-digital converter 34 are both in communication connection with the input end of the main control chip 33, the output end of the main control chip 33 is in communication connection with the input end of the RS-232 communication chip 32, the output ends of the pressure sensor 25 and the thermistor 26 are in communication connection with the input end of the amplifying filter 35, and the output end of the amplifying filter 35 is in communication connection with the input end of the analog-to-digital converter 34; in practical application, the pressure sensor 25 is used for detecting a pressure value of seawater, the thermistor 26 is used for detecting a temperature value of seawater, the pressure sensor 25 and the thermistor 26 respectively send the detected pressure value and temperature value to the amplifying filter 35, the pressure value and temperature value are sent to the analog-to-digital converter 34 after being filtered by the amplifying filter 35, digital signals are converted by the analog-to-digital converter 34 and sent to the main control chip 33, the main control chip 33 is communicated with a user through the RS-232 communication chip 32, and the pressure value and temperature value of seawater can be sent to the user.
As an embodiment of the present invention, further, the fixed inner liner 12 is made of vulcanized rubber; when pouring, the lead wires connecting the circuit board 30 and the connector 23 are poured into a whole with the fixed lining 12, so that a separation band is formed inside the housing 10, moisture cannot enter the cavity of the circuit board 30, and the tightness of the cavity of the circuit board 30 is ensured.
As an embodiment of the present invention, further, the pressure sensor 25 is a piezoresistive pressure sensor; the sensitivity of the instrument is improved, thereby ensuring the accuracy of the instrument.
As an embodiment of the present invention, further, the housing 10 employs a laser welding technique to ensure sealing.
As an embodiment of the present invention, further, the encapsulation adhesive 221 is epoxy resin adhesive; the short circuit between the connector 23 and the circuit board 30 at the first opening 111 can be prevented by using the epoxy resin adhesive with shock and vibration elimination.
As an embodiment of the present invention, further, an insulating adhesive is bonded between the first conducting wire 251 and the second conducting wire 261 and the joint 23; the isolation of the joint is enhanced, and electric shock accidents are avoided.
Specifically, this special temperature measuring instrument's theory of operation: the sealing cover 20 is detachably connected with the connecting part 11 through threads, so that the connecting part of the lead in the sealing cover 20 has stronger sealing performance, and can be replaced conveniently in time under the condition that the joint 23 is damaged, thereby saving the waiting time; in practical application, the pressure sensor 25 is used for detecting a pressure value of seawater, the thermistor 26 is used for detecting a temperature value of seawater, the pressure sensor 25 and the thermistor 26 respectively send the detected pressure value and temperature value to the amplifying filter 35, the pressure value and temperature value are sent to the analog-to-digital converter 34 after being filtered by the amplifying filter 35, digital signals are converted by the analog-to-digital converter 34 and sent to the main control chip 33, the main control chip 33 is communicated with a user through the RS-232 communication chip 32, and the pressure value and temperature value of seawater can be sent to the user.
It should be noted that the specific model specifications of the rechargeable battery 13, the thermistor 26, the voltage reduction chip 31, the RS-232 communication chip 32, the main control chip 33, the analog-to-digital converter 34, and the amplification filter 35 need to be determined by type selection according to the actual specification of the device, and the specific type selection calculation method adopts the prior art in the field, and therefore, detailed description is omitted.
The power supply and the principle of the rechargeable battery 13, the thermistor 26, the voltage reduction chip 31, the RS-232 communication chip 32, the main control chip 33, the analog-to-digital converter 34 and the amplification filter 35 will be clear to those skilled in the art and will not be described in detail herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A special temperature measuring instrument, comprising:
the cable connector comprises a shell (10), wherein a connecting part (11) is arranged at the end part of the shell (10), a first opening part (111) is arranged on the connecting part (11) along the axis, a fixed lining (12) is poured inside the shell (10), and a wire channel (121) is reserved on the fixed lining (12) along the axis;
the sealing cover (20) is sequentially provided with an inner cavity (22) and an outer cavity (21) from inside to outside, the outer cavity (21) is in threaded connection with the connecting part (11), the inner cavity (22) is bonded with a joint (23) through packaging glue (221), the top of the sealing cover (20) is provided with a second opening part (222) communicated with the inner cavity (22), and the joint (23) is respectively connected with a pressure sensor (25) and a thermistor (26) through a first lead (251) and a second lead (261);
the circuit board (30), the circuit board (30) set up the below of fixed inside lining (12), install step-down chip (31), RS-232 communication chip (32), main control chip (33), adc (34) and amplifier filter (35) on circuit board (30) respectively.
2. A special temperature measuring instrument according to claim 1, characterized in that a rechargeable battery (13) is arranged below the circuit board (30).
3. A special temperature measuring instrument according to claim 1, characterized in that a sealing ring (24) is arranged between the joint (23) and the inner cavity (22).
4. A special temperature measuring instrument as claimed in claim 2, wherein the output terminal of the rechargeable battery (13) is electrically connected to the input terminal of the voltage-reducing chip (31), the output terminals of the voltage-reducing chip (31) and the analog-to-digital converter (34) are both connected to the input terminal of the main control chip (33) in communication, the output terminal of the main control chip (33) is connected to the input terminal of the RS-232 communication chip (32) in communication, the output terminals of the pressure sensor (25) and the thermistor (26) are connected to the input terminal of the amplifying filter (35) in communication, and the output terminal of the amplifying filter (35) is connected to the input terminal of the analog-to-digital converter (34) in communication.
5. A special temperature measuring instrument according to claim 1, characterized in that the fixed lining (12) is made of vulcanized rubber.
6. A specific temperature measuring instrument according to claim 1, wherein the pressure sensor (25) is a piezoresistive pressure sensor.
7. A special temperature measuring instrument according to claim 1, characterized in that the housing (10) is laser welded to ensure sealing.
8. A special temperature measuring instrument according to claim 1, characterized in that the encapsulating glue (221) is epoxy glue.
9. A special temperature measuring instrument according to claim 1, characterized in that an insulating glue is glued between the first and second conductors (251, 261) and the joint (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120532347.6U CN214224383U (en) | 2021-03-15 | 2021-03-15 | Special temperature measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120532347.6U CN214224383U (en) | 2021-03-15 | 2021-03-15 | Special temperature measuring instrument |
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| Publication Number | Publication Date |
|---|---|
| CN214224383U true CN214224383U (en) | 2021-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120532347.6U Active CN214224383U (en) | 2021-03-15 | 2021-03-15 | Special temperature measuring instrument |
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| CN (1) | CN214224383U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114486056A (en) * | 2021-12-27 | 2022-05-13 | 武汉航空仪表有限责任公司 | Miniaturized pressure sensor |
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2021
- 2021-03-15 CN CN202120532347.6U patent/CN214224383U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114486056A (en) * | 2021-12-27 | 2022-05-13 | 武汉航空仪表有限责任公司 | Miniaturized pressure sensor |
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