CN213239462U - Piston temperature measurement system - Google Patents
Piston temperature measurement system Download PDFInfo
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- CN213239462U CN213239462U CN202022220542.3U CN202022220542U CN213239462U CN 213239462 U CN213239462 U CN 213239462U CN 202022220542 U CN202022220542 U CN 202022220542U CN 213239462 U CN213239462 U CN 213239462U
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Abstract
The application provides a piston temperature measurement system, after the measurement of wireless temperature measurement module obtained the piston temperature, send the piston temperature to the piston outside through wireless transmitting module, set up and can receive at the outside and inside wireless receiving module of organism of piston the piston temperature to it will to transmit the module through the data the outside equipment of organism is forwarded to the piston temperature. Therefore, the measured piston temperature is wirelessly transmitted to equipment outside the engine body in a secondary forwarding mode, such as test equipment, and the problem that the reliability of the obtained piston temperature is poor due to the fact that the piston temperature is interfered by poor connection and bending of a signal line is solved.
Description
Technical Field
The application belongs to the technical field of engines, and particularly relates to a piston temperature measuring system.
Background
The temperature of the engine piston plays a key role in aspects such as combustion analysis, reliability evaluation, heated member design and material selection, simulation analysis boundary and the like, so that the temperature of the piston needs to be accurately obtained.
In the prior art, a temperature sensor is arranged on the surface of a piston, the temperature of the piston is measured by the temperature sensor, and the temperature of the piston measured by the temperature sensor is transmitted to a test device outside an engine through a signal line so as to obtain the temperature of the piston.
However, the applicant has found that the reliability of the acquired piston temperature is poor due to the bad influence of the signal line connection.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a piston temperature measurement system for solve the problem that the piston temperature reliability obtained among the prior art is poor.
The technical scheme is as follows:
the utility model discloses a piston temperature measurement system, include:
a piston arranged in the machine body;
the wireless temperature measuring module and the wireless transmitting module are respectively arranged in the piston; the wireless transmitting module is respectively connected with each wireless temperature measuring module;
the wireless receiving module and the data forwarding module are respectively arranged outside the piston and inside the machine body; the receiving end of the wireless receiving module is wirelessly connected with the wireless transmitting module, and the output end of the wireless receiving module is connected with the data forwarding module;
and the data forwarding module is wirelessly connected with a receiving end of the external equipment of the machine body.
Preferably, the wireless transmitting module is connected with the wireless receiving module through microwave communication.
Preferably, the method further comprises the following steps:
the device comprises an acquisition module and a processor;
the input end of the acquisition module is connected with the wireless temperature measurement module, the output end of the acquisition module is connected with the input end of the processor, and the output end of the processor is connected with the transmitting module.
Preferably, the method further comprises the following steps:
the wireless power supply module is arranged in the machine body;
the wireless power supply receiver, the charging module and the energy storage module are arranged in the piston;
when the piston runs to a certain range of a bottom dead center, the distance between the wireless power supply receiver and the wireless power supply module meets a certain condition, and energy can be received from the wireless power supply module;
the output end of the wireless power supply receiver is connected with the receiving end of the charging module, and the output end of the charging module is connected with the energy storage module.
Preferably, the method further comprises the following steps:
an electrical interface is arranged on the machine body;
and a power supply line of the wireless power supply module passes through the electrical interface to be connected with a power supply outside the machine body.
Preferably, the wireless temperature measuring module is a thermocouple.
Preferably, the method further comprises the following steps:
and the compensation circuit is connected with the acquisition channel of the thermocouple.
Compared with the prior art, the technical scheme provided by the application has the following advantages:
according to the above technical scheme, the utility model discloses in after the measurement of wireless temperature measurement module obtains piston temperature, send piston temperature to the piston outside through wireless transmitting module, set up and can receive at the outside and inside wireless receiving module of organism of piston the piston temperature to it will to transmit the module through the data piston temperature to the outside equipment of organism. Therefore, the measured piston temperature is wirelessly transmitted to equipment outside the engine body in a secondary forwarding mode, such as test equipment, and the problem that the reliability of the obtained piston temperature is poor due to the fact that the piston temperature is interfered by poor connection and bending of a signal line is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic block diagram of a piston thermometry system of the present disclosure;
FIG. 2 is a schematic diagram of a circuit configuration of a thermometry system of the present disclosure;
FIG. 3 is a schematic diagram of another piston thermometry system disclosed in the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The application provides a piston temperature measurement system can realize accurately measuring piston temperature.
Specifically, referring to fig. 1, the piston thermometry system may include:
a machine body 1.
A piston 2 disposed inside the body 1. In practical applications, the interior of the machine body 1 may include a plurality of pistons, and the number of pistons included in the interior of the machine body 1 is not limited herein.
At least one wireless temperature measuring module 21 and a wireless transmitting module 22 respectively arranged in the piston 2. The wireless transmitting module 22 is respectively connected with each wireless temperature measuring module 21.
The wireless temperature measuring module 21 is used for detecting the temperature of the piston 2, and may be an existing temperature sensor, such as a thermal resistance sensor or a thermocouple sensor.
After the temperature of the piston 2 is measured by the wireless temperature measuring module 21, the temperature is sent by the wireless transmitting module 22.
The temperature measurement system further comprises: the wireless receiving module 11 and the data forwarding module 12 are respectively arranged outside the piston and inside the machine body; the receiving end of the wireless receiving module 11 is wirelessly connected to the wireless transmitting module 22, and the output end of the wireless receiving module 11 is connected to the data forwarding module 12. The data forwarding module 12 is wirelessly connected with a receiving end of the external device of the machine body.
Thus, after the wireless transmitting module 22 transmits the temperature, the wireless receiving module 11 disposed outside the piston 2 and inside the body 1 can receive the temperature. Wherein the wireless receiving module 11 comprises a receiving antenna, through which the temperature can be received.
And the temperature received by the wireless receiving module 11 is forwarded to the outside of the machine body 1 through the data forwarding module 12 which is also arranged outside the piston 2 and inside the machine body 1, so that the device outside the machine body 1 can acquire the measured temperature of the piston 2.
Through the technical scheme, in the embodiment, after the piston temperature is measured by the wireless temperature measuring module, the piston temperature is sent to the outside of the piston through the wireless transmitting module, the piston temperature can be received by the wireless receiving module arranged outside the piston and inside the engine body, and the piston temperature is forwarded to the equipment outside the engine body through the data forwarding module. Therefore, the measured piston temperature is wirelessly transmitted to equipment outside the engine body in a secondary forwarding mode, such as test equipment, and the problem that the reliability of the obtained piston temperature is poor due to the fact that the piston temperature is interfered by poor connection and bending of a signal line is solved.
Optionally, the wireless temperature measuring module 21 is a thermocouple. For example, a special K-type thermocouple, the diameter of the ball head of which is less than 1mm, can be directly arranged on the top surface of the piston. Therefore, the combustion temperature of the surface of the piston can be obtained, and the accuracy of the measured piston temperature is improved.
Optionally, the wireless transmitting module 22 is connected with the wireless receiving module 11 through microwave communication. Thus, the measured piston temperature is transmitted using microwave communication, for example, using 2.4GHz microwave transmission.
Compared with the communication modes such as WIFI and Bluetooth, the complex communication protocol of the communication modes such as WIFI and Bluetooth is abandoned, the data transmission is carried out only by using the 2.4GHz physical layer, and the low-power emission is carried out under the condition of ensuring the data transmission according to the environment in the engine cylinder, so that the power consumption is very low. The battery can still operate for 7 days without recharging the battery.
And the data transmission rate can reach 2Mbps, thereby providing sufficient bandwidth for realizing high-speed acquisition.
Referring to fig. 2, a schematic diagram of a circuit structure of the temperature measurement system is shown, and the temperature measurement system further includes:
the device comprises an acquisition module and a processor;
wherein, the acquisition module can be the existing ADC acquisition module. The input end of the acquisition module is connected with the wireless temperature measurement module, and the output end of the acquisition module is connected with the input end of the processor, so that analog signals output by the wireless temperature measurement module are converted into digital signals through the acquisition module and input into the processor.
In order to improve the accuracy of the measurement result, an ADC acquisition module with high precision is selected.
The ADC acquisition module comprises a plurality of acquisition channels, and each acquisition channel is connected with one wireless temperature measurement module respectively to acquire the analog signals output by the wireless temperature measurement module.
Of course, if one ADC acquisition module cannot meet the acquisition requirements. For example, there are 9 wireless temperature measurement modules, and an ADC acquisition module only has 8 acquisition channels, and thus, an ADC acquisition module can only acquire the analog signals of 8 wireless temperature measurement modules, and in this case, a second ADC acquisition module is provided, and the acquisition of the analog signals of 9 wireless temperature measurement modules is realized jointly by combining with a first ADC acquisition module.
The data that gather are read through the treater back, send through wireless transmitting module is wireless, and receiving antenna receives the data back, and wireless sending goes out once more through data forwarding module, and the realization is sent the data of gathering to the outside equipment of organism, like test equipment through secondary wireless forwarding.
Optionally, the thermometry system may further include:
the wireless power supply device comprises a wireless power supply module arranged inside the machine body 1, and a wireless power supply receiver, a charging module and an energy storage module which are arranged inside a piston.
Wherein, the wireless power supply module and the wireless power supply receiver are used in a pairing mode. The position relation satisfies, and in the process that the piston moves to the lower dead point, the wireless power supply receiver gradually approaches the wireless power supply module.
When the piston moves to a certain range of the bottom dead center, the distance between the wireless power supply receiver and the wireless power supply module meets a certain condition, and therefore the wireless power supply receiver can receive energy from the wireless power supply module.
The output end of the wireless power supply receiver is connected with the receiving end of the charging module, and the output end of the charging module is connected with the energy storage module. Therefore, after the wireless power supply receiver receives energy from the wireless power supply module, the energy storage module is charged through the charging module.
The energy storage module can be a battery and is used for supplying power to the wireless temperature measurement module.
Under the condition that an external power supply is needed to supply power for the wireless power supply module, the temperature measuring system can further comprise:
the wireless power supply module is characterized in that the machine body is provided with an electrical interface, and an external power supply is connected with the wireless power supply module through the electrical interface, so that the external power supply is used for supplying power to the wireless power supply module. As shown in fig. 3. The schematic system structure diagram shown in fig. 3 does not show the acquisition module, the processor, the wireless power supply receiver, the charging module and the energy storage module which are arranged inside the piston.
The wire harness of the electronic control engine can be used for directly supplying power to the wireless power supply module.
Optionally, the data forwarding module includes a data transmission antenna, and the data transmission antenna is led out to the outside of the machine body through the electrical interface.
Optionally, the temperature measurement system may further include: a compensation circuit.
A temperature sensor can be used as a cold end compensation circuit of the thermocouple, the stable working temperature of the cold end compensation circuit can reach more than 150 ℃, and the cold end compensation circuit is directly connected to any one acquisition channel. Such as to the acquisition channel ADC _0 shown in fig. 2.
The working principle of the temperature measuring system shown in fig. 2 is as follows:
the wireless temperature measurement module wirelessly transmits the measured piston temperature through the wireless transmission module in real time under the power supply of the battery; and after receiving the temperature of the piston, a receiving antenna arranged in the engine body analyzes the data and combines the data into a specified format, the data is wirelessly transmitted out again through a data forwarding module, and the acquired data is wirelessly transmitted to equipment outside the engine body through secondary wireless forwarding, such as test equipment. It should be noted that the collected piston temperatures of the plurality of pistons may be wirelessly transmitted to a device outside the body at a time.
In order to ensure that the wireless temperature measurement module can work normally, the battery needs to be ensured to provide sufficient electric quantity, and then the battery needs to be charged.
When the piston runs to the position near the bottom dead center, the energy of the wireless power supply module activates the wireless power supply receiver to generate electric energy to charge the battery; when the piston moves away from the vicinity of the bottom dead center, the charging ends. Wherein, no matter whether the battery is in a charging state or not, the wireless temperature measurement module continuously works to realize dynamic temperature measurement.
In order to reduce the consumption of the electric quantity of the battery before the engine does not work, a software dynamic energy-saving method is adopted to ensure that the electric quantity of the battery is sufficient. The software dynamic energy-saving method is to detect the working environment temperature of the current wireless temperature measurement module, namely the piston skirt temperature, in a software mode. Acquiring the current working environment temperature once at regular intervals, and when the working environment temperatures acquired twice continuously are higher than a preset temperature, enabling the wireless temperature measurement module to enter a high-speed continuous working mode and transmitting the measured piston temperature in real time; when the working environment temperature collected for a certain number of times is lower than the preset temperature, the high-speed continuous working mode is exited and the energy-saving intermittent working mode is entered, so that the standby for a very long time is realized. Through tests, the standby time can be realized for more than 45 days by adopting a software dynamic energy-saving method.
Through the technical scheme, the thermocouple can be used for directly measuring the temperature of the top surface of the piston in the embodiment, the measurement precision is high, and the accuracy of the measured temperature of the piston is improved. And has long service life. In addition, during installation, the existing structure, such as a connecting rod and other important parts, does not need to be damaged, and the use safety is improved.
Because the inner circuit of the piston only comprises the wireless temperature measuring module, the acquisition module, the processor, the wireless transmitting module, the wireless power supply receiver, the charging module and the energy storage module, the inner circuit of the piston is simple, the size of the PCB is small, the weight of the PCB is light, the inertia of the piston in high-speed operation of the engine is very small, and the reliability of the system is improved.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A piston thermometry system, comprising:
a piston arranged in the machine body;
the wireless temperature measuring module and the wireless transmitting module are respectively arranged in the piston; the wireless transmitting module is respectively connected with each wireless temperature measuring module;
the wireless receiving module and the data forwarding module are respectively arranged outside the piston and inside the machine body; the receiving end of the wireless receiving module is wirelessly connected with the wireless transmitting module, and the output end of the wireless receiving module is connected with the data forwarding module;
and the data forwarding module is wirelessly connected with a receiving end of the external equipment of the machine body.
2. The thermometric system of claim 1, wherein the wireless transmitter module is in microwave communication with the wireless receiver module.
3. The thermometry system of claim 1, further comprising:
the device comprises an acquisition module and a processor;
the input end of the acquisition module is connected with the wireless temperature measurement module, the output end of the acquisition module is connected with the input end of the processor, and the output end of the processor is connected with the transmitting module.
4. The thermometry system of claim 1, further comprising:
the wireless power supply module is arranged in the machine body;
the wireless power supply receiver, the charging module and the energy storage module are arranged in the piston; when the piston runs to a certain range of a bottom dead center, the distance between the wireless power supply receiver and the wireless power supply module meets a certain condition, and energy can be received from the wireless power supply module;
the output end of the wireless power supply receiver is connected with the receiving end of the charging module, and the output end of the charging module is connected with the energy storage module.
5. The thermometry system of claim 4, further comprising:
an electrical interface is arranged on the machine body;
and a power supply line of the wireless power supply module passes through the electrical interface to be connected with a power supply outside the machine body.
6. The thermometry system of claim 1, wherein the wireless thermometry module is a thermocouple.
7. The thermometry system of claim 6, further comprising:
and the compensation circuit is connected with the acquisition channel of the thermocouple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022220542.3U CN213239462U (en) | 2020-09-30 | 2020-09-30 | Piston temperature measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022220542.3U CN213239462U (en) | 2020-09-30 | 2020-09-30 | Piston temperature measurement system |
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| CN213239462U true CN213239462U (en) | 2021-05-18 |
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| CN202022220542.3U Active CN213239462U (en) | 2020-09-30 | 2020-09-30 | Piston temperature measurement system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113654808A (en) * | 2021-08-05 | 2021-11-16 | 天津内燃机研究所（天津摩托车技术中心） | Wireless transmission device for measuring information in cylinder liner of internal combustion engine and installation method thereof |
| CN114051181A (en) * | 2021-11-09 | 2022-02-15 | 天津大学 | Device and method for wirelessly transmitting measurement information in cylinder body of internal combustion engine |
| CN114173217A (en) * | 2021-11-09 | 2022-03-11 | 天津大学 | Wireless data transmission device and method for measurement information in piston of internal combustion engine cylinder |
| CN114279711A (en) * | 2021-12-23 | 2022-04-05 | 中国船舶重工集团公司第七一一研究所 | Piston heat transfer test device |
-
2020
- 2020-09-30 CN CN202022220542.3U patent/CN213239462U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113654808A (en) * | 2021-08-05 | 2021-11-16 | 天津内燃机研究所（天津摩托车技术中心） | Wireless transmission device for measuring information in cylinder liner of internal combustion engine and installation method thereof |
| CN114051181A (en) * | 2021-11-09 | 2022-02-15 | 天津大学 | Device and method for wirelessly transmitting measurement information in cylinder body of internal combustion engine |
| CN114173217A (en) * | 2021-11-09 | 2022-03-11 | 天津大学 | Wireless data transmission device and method for measurement information in piston of internal combustion engine cylinder |
| CN114173217B (en) * | 2021-11-09 | 2022-11-04 | 天津大学 | Wireless data transmission device and method for measurement information in piston of internal combustion engine cylinder |
| CN114051181B (en) * | 2021-11-09 | 2023-09-12 | 天津大学 | Device and method for wirelessly transmitting measurement information in cylinder body of internal combustion engine |
| CN114279711A (en) * | 2021-12-23 | 2022-04-05 | 中国船舶重工集团公司第七一一研究所 | Piston heat transfer test device |
| CN114279711B (en) * | 2021-12-23 | 2024-03-29 | 中国船舶集团有限公司第七一一研究所 | Piston heat transfer test device |
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