Wireless temperature and pressure comprehensive tester

Abstract

The utility model relates to a wireless temperature and pressure comprehensive tester, which comprises a main body structure, a temperature sensor, a pressure sensor and a data processing unit, the temperature sensor is detachably fixed outside the main body structure; the pressure sensor is fixed on the outer surface of the body structure; the main body structure comprises a shell and an inner layer; the shell is a closed shell and surrounds the periphery of the inner layer; the inner layer comprises a first blocking layer, a heat insulation layer and a second blocking layer which are arranged from outside to inside, and a containing cavity is formed in the second blocking layer; the data processing unit is fixedly arranged in the accommodating cavity and is electrically connected with the temperature sensor and the pressure sensor; the data processing unit transmits test results of the temperature sensor and the pressure sensor regularly in batches. The wireless temperature and pressure comprehensive tester has the advantages of being low in power consumption, capable of wirelessly transmitting data in real time, capable of replacing the temperature measuring sensor, suitable for high-temperature and high-pressure harsh environments, capable of measuring steam temperature in a large sterilizer test pack and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature and pressure calibration testing, in particular to a wireless temperature and pressure comprehensive tester. Background Art

[0002] The calibration of sterilizers, constant temperature test equipment, and atmospheric pressure test chambers requires calibrating the temperature and pressure parameters in an effectively sealed space. If traditional wired temperature sensors and pressure sensors are used for point-by-point calibration, it is easy to encounter problems such as the lack of reserved measurement ports on the object to be measured, making calibration impossible, or poor sealing of the reserved ports during calibration, prone to leakage, resulting in inaccurate calibration data. Currently, many enterprises have developed wireless temperature and pressure test sensors for calibrating test equipment.

[0003] Existing wireless temperature and pressure testers generally adopt the following several methods:

[0004] 1) Temperature and pressure integrated, but the temperature probe is built-in; however, in the test of such wireless temperature and pressure testers, it is difficult for the temperature probe to quickly reach equilibrium with the environment, unable to quickly measure the temperature and pressure in an effectively sealed space, nor to quickly calibrate; in addition, the temperature test range of this measurement device is generally (-40~150)°C, and the test accuracy is generally ±0.10°C, which is not suitable for the metrological detection of equipment such as large sterilizers and tunnel ovens; if the lowest temperature is generally -40°C, it is not applicable to ultra-low temperature refrigerators at -80°C; or if the highest temperature reaches 140°C, it does not meet the technical requirements in JJF1308 "Calibration Specification for Thermometers of Medical Thermal Sterilization Equipment" and JJF 2088 "Calibration Specification for Temperature, Pressure, and Time Parameters of Large Steam Sterilizers" that the measurement range of the temperature collector should not be lower than 150°C; the measurement range is relatively narrow and cannot meet the highest and / or lowest temperature requirements of various devices.

[0005] 2) The temperature probe is an external armored platinum resistance; however, such temperature probes cannot be placed flexibly and naturally, and are not suitable for calibrating large sterilizers that require the temperature probe to be placed flexibly and naturally inside the test package, easily causing the problem that the probe lifts the test package, forming a gap, and the sterilizing steam is easy to invade the probe, unable to truly test the thermal penetration of the sterilizer. Therefore, the existing wireless temperature and pressure test devices have the problem of a single sensor and are not suitable for detecting the temperature inside various devices (such as large sterilizers);

[0006] In addition, the above wireless temperature (pressure) system also lacks the real-time transmission function. The calibration data needs to be read through a card reader after the test to collect the data, and it is impossible to transmit the data in a timely manner during the test and adjust the parameters of the equipment in a timely manner; moreover, the above wireless temperature (pressure) system has a large amount of recorded data, the wireless sensor consumes a large amount of power, and the battery power consumption is large, and the battery needs to be frequently replaced. Content of the Utility Model

[0007] Based on this, the purpose of the present utility model is to provide a wireless temperature and pressure comprehensive tester, which has the advantages of low power consumption, wireless real-time data transmission, replaceable temperature sensors, being applicable to harsh environments of high temperature and high pressure, and being able to measure steam temperature in a large sterilizer test package, etc.

[0008] A wireless temperature and pressure comprehensive tester includes a main body structure, a temperature sensor, a pressure sensor, and a data processing unit; the temperature sensor is detachably fixed outside the main body structure; the pressure sensor is fixed on the outer surface of the main body structure; the main body structure includes an outer shell and an inner layer; the outer shell is a closed shell surrounding the outer periphery of the inner layer; the inner layer includes a first barrier layer, a heat insulation layer, and a second barrier layer arranged from outside to inside, and a receiving cavity is provided inside the second barrier layer; the data processing unit is fixedly arranged in the receiving cavity and is electrically connected to the temperature sensor and the pressure sensor; the data processing unit transmits the test results of the temperature sensor and the pressure sensor in batches at regular intervals.

[0009] Compared with the prior art, the wireless temperature and pressure comprehensive tester of the present invention protects the internal data processing unit through a three-layer inner layer heat insulation design, enabling it to be used normally in harsh temperature and pressure environments and having a large measurement range. The wireless temperature and pressure comprehensive tester of the present invention adopts an external detachable temperature sensor, and appropriate specifications of temperature sensors can be selected and replaced according to different test requirements in different test scenarios, realizing the diversification of the application scenarios of the wireless temperature and pressure tester, meeting the metrological calibration of various large and small steam sterilizers and environmental test equipment within 150°C; moreover, both the temperature sensor and the pressure sensor of this application are externally arranged outside the main body structure, and the accuracy of the test results is relatively high. The data processing unit of the wireless temperature and pressure comprehensive tester of the present invention transmits the test results in a batch-by-batch and timed manner. On the one hand, it can transmit test data in real time, avoiding the problem that calibration data can only be read after the test is completed and the test equipment cannot be optimized and adjusted in a timely manner; on the other hand, by adopting the method of transmitting test results in batches at regular intervals, the problem of excessive invalid data recording is avoided, thereby reducing the energy consumption of the wireless temperature and pressure comprehensive tester and solving the problem of large battery power consumption for real-time transmission.

[0010] Further, the heat insulation layer is silica aerogel. The porosity is 80 - 99.8%, the specific surface area is 200 - 1000m 2 / g, and the density is 3kg / m 3, with a thermal conductivity of 0.012 W / (m·K), and the thickness of the thermal insulation layer is (1.5 - 2.0) mm. The above-mentioned silica aerogel thermal insulation layer can isolate a large amount of external heat, which is beneficial to improving the heat preservation and insulation effect of the wireless temperature and pressure comprehensive tester.

[0011] Furthermore, the first barrier layer and the second barrier layer are made of glass fiber. Glass fiber has the advantages of good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength, which is beneficial to improving the heat preservation and insulation effect of the wireless temperature and pressure comprehensive tester and ensuring the safety and reliability of the circuit. The first barrier layer not only isolates heat but also plays a supporting role for the thermal insulation layer and the second barrier layer.

[0012] Furthermore, the outer shell is made of 316L stainless steel. 316L stainless steel has good corrosion resistance under high temperature and high pressure and can be used in a sterilization environment; in addition, it also has good tensile and compressive strength, can be used inside a pressure vessel, and is not easily affected by external impacts and vibrations.

[0013] Furthermore, the wireless temperature and pressure comprehensive tester further includes an aviation connector externally disposed on the main body structure; there is also an interface provided on the main body, and the aviation connector is connected to the main body structure through the interface; the aviation connector includes a jack connector and a pin connector, and the jack connector and the pin connector are detachably connected; the temperature sensor is fixed on the jack connector. The aviation connector has the characteristics of waterproof, high temperature and high pressure resistance, and can meet the requirements of the test range of the wireless temperature and pressure tester; and the tester can select a temperature sensor with appropriate specifications, dimensions, and materials and a jack connector matching the temperature sensor to replace according to the test requirements of the test scenario, so as to realize the diversification of the application scenarios of the wireless temperature and pressure comprehensive tester and meet the metrological calibration of various large and small steam sterilizers and environmental test equipment within 150°C.

[0014] Furthermore, the jack connector includes a jack sleeve and a locking nut fixed on the surface of the jack sleeve. The locking nut includes a fixed end and a first connection end, and the fixed end is fixed on the outer surface of the jack sleeve; the pin connector includes a pin sleeve, and the pin sleeve includes a second connection end and a third connection end. The outer diameter of the second connection end is adapted to the inner diameter of the first connection end; the first connection end is connected to the second connection end; the third connection end is connected to the interface.

[0015] Furthermore, a sealing ring is provided at the position where the inside of the pin connector is connected to the jack sleeve. When the jack connector and the pin connector are connected, the jack sleeve of the jack connector presses the sealing ring, which is beneficial to improving the sealing performance of the aviation connector.

[0016] Furthermore, the data processing unit includes a power supply and a circuit board. The circuit board is provided with a signal acquisition module, a signal processing and data calculation module, a storage module, and a wireless data communication module. The signal acquisition module acquires the test results of the temperature sensor and the pressure sensor and converts them into signals for output to the signal processing and data calculation module. The signal processing and data calculation module acquires the signals, processes, converts, and calculates them, and then outputs data to the storage module. The storage module stores the data. The wireless data communication module batches and obtains the data from the storage module and transmits it to the outside. The signal acquisition time interval of the signal acquisition module is set as t, and the data transmission time interval of the wireless data communication module is set as T, where T = nt. The data processing unit transmits the test results in a batch-timed manner. On the one hand, it can transmit the test data in real time, avoiding the problem that the calibration data can only be read after the experiment is completed and the test equipment cannot be optimized and adjusted in time. On the other hand, by using the batch-timed transmission method for the test results, the problem of excessive recording of invalid data is avoided, thereby reducing the energy consumption of the wireless temperature and pressure integrated tester and solving the problem of large battery power consumption for real-time transmission.

[0017] Furthermore, 1s ≤ t ≤ 1h, n ≥ 10, T ≥ 2min.

[0018] For better understanding and implementation, the present invention will be described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the wireless temperature and pressure integrated tester of the present invention;

[0020] Figure 2 is a cross-sectional view of the aviation connector of the present invention;

[0021] Figure 3 is a schematic diagram of batch-timed transmission of the wireless temperature and pressure integrated tester of the present invention, the communication converter, and the computer;

[0022] Figure 4 is a flowchart of batch-timed transmission of the wireless temperature and pressure integrated tester of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The normal operating temperature of electronic components, batteries, etc. is generally (-40 to 85)°C. For test equipment in high-temperature and high-pressure environments, efficient thermal insulation design for electronic components, etc. needs to be carried out inside to ensure the normal operation of the circuit board. The circuit board is the core component of the wireless temperature and pressure tester. Since the electronic components on the circuit board are sensitive to temperature, the ambient temperature of the circuit board should be controlled at (-30 to 80)°C preferably. The test time (including heating, cooling, and thermal equilibrium time) of general sterilizers is less than 1.5 h, and the detection time of other environmental test equipment can be completed within 1 h.

[0024] Therefore, the wireless temperature and pressure comprehensive tester of the present invention adopts a main structure of 316L stainless steel shell / fiberglass barrier layer / silica aerogel thermal insulation layer / fiberglass barrier layer, and an aviation connector detachable external installation temperature sensor, enabling it to maintain good metrological performance in harsh environments. Its test ambient temperature range is (-90 to 160)°C, the ambient pressure range is (0 to 0.8) MPa, and it can realize the diversification of the application scenarios of the wireless temperature and pressure comprehensive tester, meeting the test requirements of general sterilizers and most other environmental test equipment.

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention.

[0026] It should be clear that the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative work belong to the scope protected by the embodiments of the present application.

[0027] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms "a", "the", and "said" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0028] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims. In the description of the present application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects and do not have to be used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0030] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In addition, in the description of the present application, unless otherwise stated, "a plurality of" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0032] It should be understood that the embodiments of the present application are not limited to the exact structures already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the embodiments of the present application is only limited by the appended claims.

[0033] Embodiment

[0034] Please refer to Figures 1-2, the wireless temperature and pressure integrated tester of the present invention includes a main body structure 1, an aviation connector 2, a temperature sensor 3, a pressure sensor 4, and a data processing unit 5; the main body structure includes a housing 12 and an inner layer 14; the temperature sensor 3 is detachably fixed outside the main body structure 1.

[0035] The housing 12 is a closed shell that surrounds the outer periphery of the inner layer 14. Preferably, the housing 12 is made of 316L stainless steel.

[0036] The inner layer 14 includes a first barrier layer 142, a heat insulation layer 144, and a second barrier layer 146 arranged from outside to inside. An accommodation cavity 1462 is provided inside the second barrier layer 146; the first barrier layer 142 and the second barrier layer 146 are made of glass fiber; the heat insulation layer is silica aerogel with a porosity of 80-99.8% and a specific surface area of 200-1000m 2 / g, a density of 3kg / m 3 , a thermal conductivity of 0.012W / (m·K), and the thickness of the heat insulation layer is (1.5-2.0)mm; an interface 148 is also provided on the main body structure 1. The interface 148 penetrates through the housing 12 and the inner layer 14. The interface 148 connects the outside of the main body structure 1 with the accommodation cavity 1462, and the inner wall of the interface 148 is provided with internal threads.

[0037] The aviation connector 2 is externally disposed on the main body structure 1 and is connected to the main body structure 1 through the interface 148; the aviation connector 2 includes a jack connector 22 and a pin connector 24, and the jack connector 22 and the pin connector 24 are detachably connected; the jack connector 22 includes a jack sleeve 222 and a locking nut 224 fixed on the surface of the jack sleeve 222. The locking nut 224 includes a fixed end 2242 and a first connection end 2244. The fixed end 2242 of the locking nut 224 is fixed on the outer surface of the jack sleeve 222, and the inner surface of the first connection 2244 end is provided with internal threads; the pin connector 24 includes a pin sleeve 242. The pin sleeve includes a second connection end 2422 and a third connection end 2424. The outer diameter of the second connection end 2422 is adapted to the inner diameter of the first connection end 2244 of the locking nut 224, and the outer surface of the second connection end 2422 is provided with external threads that match the internal threads on the inner surface of the first connection end 2244 of the locking nut 224; the outer surface of the third connection end 2424 is provided with external threads that match the internal threads on the inner wall of the interface 148.

[0038] Specifically, when the aviation connector 2 is fixed to the main body structure 1, the third connection end 2424 of the pin connector 24 is threadedly coupled to the interface 148 of the main body structure 1. The tester selects a temperature sensor 3 of a suitable specification and a jack connector 22 that matches the temperature sensor 3 according to the test requirements of the test scenario, fixes the temperature sensor 3 in the jack connector 22, and inserts the jack sleeve 222 of the jack connector 22 into the second connection end 2422 of the pin connector 24 in the direction of the specification. At the same time, rotate the jack connector 22 so that the first connection end 2244 of the lock nut 224 is threadedly coupled to the second connection end 2422 of the pin connector 24.

[0039] As a further improvement of the above solution, a sealing ring 26 is provided at the connection position between the pin connector 24 and the jack sleeve 222 of the jack connector 22. When the jack connector 22 and the pin connector 24 are connected, the jack sleeve 222 of the jack connector 22 presses the sealing ring 26, which is beneficial to improving the sealing performance of the aviation connector. In addition, the soldering point parts inside the aviation connector 2 are all sealed by high-temperature glue.

[0040] The data processing unit 5 is fixedly arranged in the accommodation cavity 1462; the data processing unit 5 transmits the test results in batches at regular intervals; the data processing unit 5 includes a power supply 52 and a circuit board 54; the power supply 52 uses a 3.6V high-energy lithium battery and can work in the temperature range of (-55~130)°C; the circuit board 54 includes a signal acquisition module, a signal processing and data calculation module, a storage module and a wireless data communication module; parameters are set for the signal acquisition module and the wireless data communication module on the circuit board; the signal acquisition time interval of the signal acquisition module is set to t (1s≤t≤1h), and the data transmission time interval of the wireless data communication module is set to T, T = nt (n≥10), and T≥2min.

[0041] The temperature sensor 3 is fixed to the jack connector 22 and is electrically connected to the data processing unit 5. Preferably, the temperature sensor is PT100, with an armored structure, in full contact with the object to be measured, and is electrically connected to the circuit board 54 through a high-temperature wire. As a further improvement of the above solution, the temperature sensor 3 is welded and fixed to the jack connector 22, and the soldering point is also sealed by high-temperature glue.

[0042] The pressure sensor 4 is fixed on the outer surface of the main body structure 1, and the pressure sensor 4 is electrically connected to the data processing unit 5. Preferably, the pressure sensor 4 adopts the working principle of strain resistance, and uses silicon-sapphire as the semiconductor sensitive element; the pressure sensor 4 is electrically connected to the circuit board 54 through a high-temperature wire; the pressure sensor 4 is insensitive to temperature changes, and has good measurement characteristics even under high-temperature conditions.

[0043] Specifically, please refer to Figures 3-4 , after the temperature sensor 3 measures the temperature value in the test device, it sends signal a to the signal acquisition module; after the pressure sensor 4 measures the pressure value in the test device, it sends signal b to the signal acquisition module, and the wireless data communication module is turned off. After t, the signal acquisition module collects and outputs signal a1 and signal b1 to the signal processing and data calculation module; after 2t, it collects and outputs signal a2 and signal b2;...; after nt, it collects and outputs signal an and signal bn.

[0044] After receiving signal a1 and signal b1, the signal processing and data calculation module converts and calculates them to obtain data A1 and data B1 respectively. Similarly, after nt, data An and data Bn can be obtained. The signal processing and data calculation module sends and stores data A1 and data B1, data A2 and data B2,..., data An and data Bn in the storage module.

[0045] After an interval of T, the wireless data communication module is turned on and obtains the data set M composed of data A1 and B2, data A2 and B2,..., data An and Bn from the storage module, M = {A1&B1, A2&B2,..., An&Bn}. The wireless data communication module transmits the data set M to the communication converter and then turns off. After an interval of T, it is turned on again to obtain the next data set M from the storage module. The communication converter converts the data set M into a serial communication format and then uploads it to the computer through the serial port. After the computer obtains the data, it will automatically arrange the data in chronological order and perform data processing.

[0046] Before conducting the test on the wireless temperature and pressure integrated tester, parameter settings are required: whether to transmit data during the test. If data is to be transmitted, enter the batch timing transmission settings. If not, the batch timing transmission function will not be started, and the test data needs to be centrally imported into the computer after the test is completed. When conducting the test, if it is necessary to promptly obtain the temperature and pressure data during the process for adjusting the test control parameters, it is generally set to batch timing data transmission; if the process data does not need to be obtained promptly during the test, it is not necessary to set it to batch timing data transmission. When in the batch timing data transmission mode, it is necessary to set the time interval t for the tester to collect data during the test. The minimum value of t is 1 s, and the maximum value can be 1 h. Then set the data upload time interval T, where T is nt (n ≥ 10) and must not be less than 2 min to ensure that the data transmission frequency is not high. After the data is uploaded, the internal temperature and pressure conditions of the device can also be viewed in a timely manner. During the test, the tester collects data every t and caches it in the data storage module. After the data is accumulated n times, the wireless data communication function (ZigBee) is started to transmit the accumulated n times of data to the computer. After the computer obtains the data, it will automatically arrange the data in chronological order for data processing. The circuit board of the wireless temperature and pressure integrated tester is built-in with a ZigBee communication module, and the computer is externally connected to a communication converter, which has three functions: ZigBee communication, data serial port communication, and data conversion. When the wireless temperature and pressure integrated tester needs to upload data, the temperature and pressure data is sent out through the ZigBee communication module in the tester to the ZigBee communication module in the communication converter. After the communication converter receives the data, it converts the data into the serial port communication format and then uploads it to the computer through the serial port. The ZigBee communication module has the advantages of strong penetration ability, low power consumption, high stability, and long transmission distance. The data upload is generally completed within 1 s. After the data transmission is completed, the wireless data communication function will be turned off for the low-power data collection stage. This method can achieve uploading the test data to the computer in a timely manner with lower power, which helps the test personnel to promptly understand the test situation and quickly optimize and adjust the test method.

[0047] The wireless temperature and pressure comprehensive tester of the present invention adopts a main structure of 316L stainless steel for the shell / fiberglass barrier layer / silica aerogel thermal insulation layer / fiberglass barrier layer, making the wireless temperature and pressure comprehensive tester have the advantages of good insulation, strong heat resistance, good corrosion resistance, high mechanical strength, high tensile and compressive strength, and good heat insulation and heat preservation effects, ensuring that the data processing unit is in a normal working state for a long time and is not easily affected by external temperature, pressure and other external factors; the wireless temperature and pressure comprehensive tester of the present invention can maintain for 2 hours at 150°C, and the internal circuit board temperature can be maintained below 70°C; it can maintain for 2 hours at -90°C, and the internal circuit board temperature can be maintained above -20°C; the wireless temperature and pressure comprehensive tester of the present invention can maintain good metrological performance in a harsh environment, with a test environmental temperature range of (-90 to 160)°C, an environmental pressure range of (0 to 0.8) MPa, a temperature accuracy of ±0.05°C, and a pressure accuracy of ±0.1 kPa, which can meet the test requirements of general sterilizers and most other environmental test equipment.

[0048] In addition, the temperature sensor of the wireless temperature and pressure comprehensive tester of the present invention adopts a detachable external installation with an aviation connector. On the one hand, the aviation connector is waterproof, resistant to high temperature and high pressure, up to the protection level of IP68, with a working temperature of (-90 to 250)°C, salt spray for 96 hours, and a maximum environmental pressure of 6 MPa, meeting the requirements of the test range of the wireless temperature and pressure tester; on the other hand, it is convenient to use temperature sensors of different specifications in different application scenarios, with convenient disassembly, realizing the diversification of the application scenarios of the wireless temperature and pressure comprehensive tester, meeting the metrological calibration of various large and small steam sterilizers and environmental test equipment within 150°C; for example, when testing the temperature field of a small sterilizer, a short-arm armored temperature sensor can be used; when testing the temperature in a test package in a large sterilizer, a temperature sensor wrapped with a slender flexible material can be used, which is convenient to place in the test package and does not affect the heat penetration of the test package.

[0049] In addition, the data processing unit of the wireless temperature and pressure comprehensive tester of the present invention adopts a transmission method of batch-timed transmission of test results. The minimum recording interval can be 1 s, and the recorded data can reach 20,000 pieces. On the one hand, it can wirelessly transmit test data in real time, avoiding the problem that calibration data can only be read after the test is completed and the test equipment cannot be optimized and adjusted in time; on the other hand, adopting the method of batch-timed transmission of test results can avoid the problem of excessive recording of invalid data, thereby reducing the energy consumption of the wireless temperature and pressure comprehensive tester and solving the problem of large battery power consumption for real-time transmission.

[0050] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and the present utility model also intends to include these modifications and variations.

Claims

1. A wireless temperature and pressure comprehensive tester, characterized in that: It includes a main structure, a temperature sensor, a pressure sensor and a data processing unit; the temperature sensor is detachably fixed to the outside of the main structure; the pressure sensor is fixed to the outer surface of the main structure; the main structure includes an outer shell and an inner layer; the outer shell is a closed shell, surrounding the outer periphery of the inner layer; the inner layer includes a first barrier layer, an insulating layer and a second barrier layer arranged from the outside to the inside, and a accommodating cavity is arranged inside the second barrier layer; the data processing unit is fixedly arranged in the accommodating cavity and is electrically connected to the temperature sensor and the pressure sensor; the data processing unit transmits the test results of the temperature sensor and the pressure sensor in batches and at a regular interval.

2. The wireless temperature and pressure comprehensive tester according to claim 1 is characterized in that: The thermal insulation layer is silicon dioxide aerogel.

3. The wireless temperature and pressure comprehensive tester according to claim 2 is characterized in that: The first barrier layer and the second barrier layer are glass fibers.

4. The wireless temperature and pressure comprehensive tester according to claim 3 is characterized in that: The housing is made of 316L stainless steel.

5. The wireless temperature and pressure comprehensive tester according to any one of claims 1 to 4, characterized in that: The wireless temperature and pressure comprehensive tester also includes an aviation connector externally disposed on the main structure; the main body is also provided with an interface, and the aviation connector is connected to the main structure through the interface; the aviation connector includes a jack connector and a pin connector, and the jack connector is detachably connected to the pin connector; the temperature sensor is fixed on the jack connector.

6. According to claim 5, the wireless temperature and pressure comprehensive tester is characterized in that: The jack connector includes a jack sleeve and a locking nut fixed on the surface of the jack sleeve, the locking nut includes a fixed end and a first connecting end, the fixed end is fixed to the outer surface of the jack sleeve; the pin connector includes a pin sleeve, the pin sleeve includes a second connecting end and a third connecting end, the outer diameter of the second connecting end is adapted to the inner diameter of the first connecting end; the first connecting end is connected to the second connecting end; the third connecting end is connected to the interface.

7. The wireless temperature and pressure comprehensive tester according to claim 6, characterized in that: A sealing ring is provided at a position where the pin connector is connected to the socket sleeve.

8. The wireless temperature and pressure comprehensive tester according to any one of claims 6-7, characterized in that: The data processing unit includes a power supply and a circuit board, and the circuit board includes a signal acquisition module, a signal processing and data calculation module, a storage module and a wireless data communication module; the signal acquisition module collects the test results of the temperature sensor and the pressure sensor and converts them into signals and outputs them to the signal processing and data calculation module; the signal processing and data calculation module collects the signals and processes, converts and calculates them, and then outputs the data to the storage module; The storage module stores the data; the wireless data communication module obtains the data from the storage module in batches and transmits the data to the outside; the signal acquisition time interval of the signal acquisition module is set to t, and the data transmission time interval of the wireless data communication module is set to T, T=nt.

9. The wireless temperature and pressure comprehensive tester according to claim 8, characterized in that: 1s≤t≤1h, n≥10, T≥2min.

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