CN211371938U

CN211371938U - Inflation pressure detecting device

Info

Publication number: CN211371938U
Application number: CN201921994918.7U
Authority: CN
Inventors: 陈启文
Original assignee: Anhui Fuyang Fengjingba Mechanical And Electrical Co ltd
Current assignee: Anhui Fuyang Fengjingba Mechanical And Electrical Co ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-08-28
Anticipated expiration: 2029-11-19

Abstract

The utility model provides an inflation pressure detection device, including inflator, inflation joint and gas tube line, the inflator is equipped with outlet port and a control circuit, and a control circuit can set for and aerify default and be used for opening and closing of inflator, and a control circuit is equipped with a pressure sensor and a signal receiving and dispatching unit. The inflation connector is provided with a second control circuit and is connected with a second pressure sensor and a third signal transceiving unit, an air passage is arranged between the second pressure sensor and the first interface, the air passage can enable the flow of gas flowing through the air passage to be equal to the flow of gas flowing through the inflation nozzle of the inflated object, the third signal transceiving unit indirectly transmits the received data to the first control circuit, the first control circuit calculates the data to measure the internal pressure value of the inflated object, and controls the inflator to be closed and opened according to the value, so that the accurate detection of the internal pressure and the pressure inflation with linear relation when the inflated object is inflated are realized.

Description

Inflation pressure detecting device

Technical Field

The utility model relates to a pressure detection technical field, specificly relate to an inflation pressure detection device.

Background

The main working principle of the existing inflator is that an internal motor directly drives a crankshaft to rotate, so that the crankshaft drives a connecting rod to enable a piston to move up and down in a reciprocating manner, and accordingly the volume of a cylinder changes, when the volume of the cylinder shrinks, gas in the cylinder is compressed and is output through a one-way valve (check valve) and a pipeline, and then the object is inflated.

In order to avoid the situation that the object is excessively inflated by the inflator and the object to be inflated bursts or is damaged, the inflator is generally provided with a pressure gauge and a pressure detector, so that the object to be inflated (such as a tire) is inflated according to a preset pressure by the inflator, and in the inflation process, when the pressure detector detects the gas pressure output by the inflator and reaches a preset air pressure, the inflator automatically stops inflating, so that the problem that the object to be inflated is excessively inflated and has excessive pressure is avoided.

However, most of the pressure detectors provided in the inflators having the inflation pressure detecting devices are installed at the outlet of the inflator, and the pressure at the outlet of the inflator is necessarily greater than that of the object to be inflated when the inflator actually inflates. Therefore, the pressure detected by the pressure detector is not the actual pressure value of the inflated object. The situation is bound to cause that after the inflatable object is inflated, the actual pressure of the inflatable object is smaller than the pressure set by the pressure gauge, so that the air pressure value inflated by the inflatable object is mistakenly considered to be correct air pressure, and the use benefit and the safety of the inflatable object are bound to be influenced when the inflatable object is used under the condition that the actual inflation pressure is insufficient.

In order to solve the above problems, the conventional inflator utilizes a scheme of installing a pressure detecting device at the inflating nozzle, so that the actual pressure of the inflated object can be effectively detected, and the inflating error can be effectively reduced. However, when the inflator performs an inflation operation, the high-pressure gas output from the inflator forms a physical back pressure at the inflation nozzle, so that the pressure value detected by the pressure detecting device installed at the inflation nozzle is not the actual pressure of the inflated object. For example: if the data detected by the pressure detector of the inflating nozzle increases instantaneously, the control circuit of the inflator judges that the inflated object reaches the inflation default value by mistake, so that the control circuit controls the inflator to stop operating, and the actual air pressure of the inflated object does not reach the inflation default value actually.

Therefore, how to provide one kind can accurate measuration by the internal pressure value of inflatable object, can aerify by inflatable object with linear relation pressure value mode simultaneously, just the utility model discloses the problem that solves.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides an inflation pressure detection device, the concrete scheme is as follows:

the first control circuit is provided with a first pressure sensor and a first signal receiving and transmitting unit, and the first pressure sensor can monitor the output air pressure at the air outlet port end and transmit data to the first control circuit. A channel is arranged in the inflation connector, a first interface and a second interface are arranged at two ends of the channel, the first interface is connected with an air outlet port of the inflator through an inflation pipeline, and the second interface is connected with an air nozzle; the inflation connector is provided with a second control circuit, the second control circuit is connected with a second pressure sensor and a third signal transceiving unit, the second pressure sensor is arranged between the first interface and the second interface and used for detecting the gas pressure in the channel, an air channel is arranged between the second pressure sensor and the first interface, and the air channel can enable the gas flow flowing through the air channel to be equal to the gas flow flowing through the inflation nozzle of the inflated object. The third signal transceiving unit is used for receiving data detected by the second pressure sensor and transmitting the data to the first signal transceiving unit, the first signal transceiving unit transmits the data detected by the second pressure sensor to the first control circuit, the first control circuit calculates the difference value between the first pressure sensor and the second pressure sensor to obtain the internal pressure value of the inflated object, and controls the inflator to be closed and opened according to whether the value reaches a preset inflation value, so that the accurate detection of the internal pressure and the pressure inflation with linear relation when the inflated object is inflated are realized. First control circuit and second control circuit all adopt microprocessor more than 8 bits as main control chip, all can realize like STM32 series chip, MC9S08AC60 series, STM8 series chip the utility model discloses a circuit control, nevertheless the utility model discloses a realization is not limited only to above-mentioned chip.

Preferably, the first control unit is connected with a power supply through a power line, and the power supply provides functions for the first pressure sensor, the first signal receiving and transmitting unit, the second signal receiving and transmitting unit, the control key, the display screen and the inflator motor through a first control circuit.

Preferably, the first control circuit is further provided with a second signal receiving and transmitting unit, and the second signal receiving and transmitting unit is used for communicating with a mobile device (such as a mobile phone, a tablet and the like) so as to transmit a signal to the first control circuit, thereby realizing the control of the mobile device on the inflator.

Preferably, the first control circuit is provided with a control key and a display so as to realize manual control and display of parameters such as air pressure.

Preferably, the second control circuit is connected with a battery module and a charging port, the charging port is used for charging the battery, and the battery module is used for supplying power to the second control circuit, the second pressure sensor and the third signal transceiving unit.

The principle of the utility model is that: the first pressure sensor is set at the outlet of the inflator, the first pressure sensor is used to detect the air pressure of the gas output from the outlet of the inflator, the second pressure sensor is set at the inflation joint, the air pressure of the channel in the inflation joint is detected by the second pressure sensor, the channel is set in the inflation joint, the air flow of the channel set at the inflation joint is equal to the air flow of the valve of the object to be inflated (such as a tire), the air pressure detected by the first pressure sensor and the second pressure sensor is transmitted to the first control circuit set at the inflator, the pressure difference comparison is carried out to obtain the internal pressure value of the object to be inflated, when the internal pressure value of the object to be inflated is less than the default value set by the inflator, the inflator is started, then the gas is output by the inflator, the air channel of the inflation joint can be in a linear relation pressure value mode, the automatic inflator can not accurately detect the internal pressure value of the inflated object so as to not carry out correct air pressure inflation operation on the inflated object.

The beneficial effects of the utility model reside in that: the utility model discloses a set up pressure sensor respectively at inflation joint and outlet port and set up the mode of air flue at inflation joint and realized being aerifyd the accurate detection of object internal pressure and treating and aerify the object and aerify with linear relation pressure value mode, simultaneously the utility model discloses simple structure, stability is high, reasonable in design is convenient for realize.

Drawings

FIG. 1 is a schematic perspective view of a portion of an inflation pressure detecting device according to the present invention;

FIG. 2 is a top view of the inflation pressure detecting device of the present invention;

FIG. 3 is a schematic view of a partial perspective view of an inflation joint of the inflation pressure detecting device of the present invention;

FIG. 4 is a sectional side view of the inflation joint of the inflation pressure detecting device of the present invention;

fig. 5 is a schematic diagram of the circuit structure of the inflation pressure detecting device of the present invention.

In the figure: 1. an inflator; 11. an air outlet port; 12. a first control circuit; 121. a first pressure sensor; 122. a first signal transceiver unit; 123. a second signal transceiver unit; 124. a control key; 125. a display; 2. an inflation joint; 21. a channel; 211. a first interface; 212. a second interface; 22. an air tap; 23. a second control circuit; 231. a second pressure sensor; 232. a third signal transceiver unit; 233. a battery module; 234. a charging port; 24. an airway; 3. an inflation line.

Detailed Description

The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.

Referring to the attached drawings 1-5 of the specification, the utility model provides an inflation pressure detection device, including inflator 1, inflation connector 2 and inflation pipeline 3, the inflator is equipped with outlet port 11 and first control circuit 12, and first control circuit 12 adopts microprocessor more than 8 bits as the main control chip, like STM32 series chip, MC9S08AC60 series, STM8 series chip, can set up the default value of inflation and be used for controlling the opening and closing of inflator 1; the first control circuit 12 is provided with a first pressure sensor 121 and a first signal transceiving unit 122, the first pressure sensor 121 can monitor the output air pressure of the air outlet port 11 and transmit data to the first control circuit 12; the first control circuit 12 is provided with a control key 124 and a display 125 so as to realize manual control and display of parameters such as air pressure and the like; the first control circuit 12 is also provided with a second signal receiving and sending unit 123, the second signal receiving and sending unit 123 can communicate with the intelligent mobile device, and further transmits signals to the first control circuit 12, so that the mobile device can control the inflator; the first control circuit 12 is connected to a power source through a power cord, and the power source supplies power to the first pressure sensor 121, the first signal transceiver 122, the second signal transceiver 123, the control key 124, the display screen 125 and the inflator motor through the first control circuit 12.

A channel 21 is arranged in the inflation connector 2, a first connector 211 and a second connector 212 are arranged at two ends of the channel 21, the first connector 211 is connected with the air outlet port 11 of the inflator 1 through an inflation pipeline 3, and the second connector 212 is connected with an air nozzle 22; the gas charging connector 3 is provided with a second control circuit 23, the second control circuit 23 is connected with a second pressure sensor 231 and a third signal transceiving unit 232, the second control circuit 23 adopts a microprocessor with more than 8 bits as a main control chip, such as an STM32 series chip, an MC9S08AC60 series chip and an STM8 series chip, the second control circuit 23 is connected with a 233 battery module and a 234 charging port, the charging port 234 is used for charging the battery, and the battery module 233 is used for supplying power 232 to the second control circuit 23, the second pressure sensor 231 and the third signal transceiving unit; the second pressure sensor 231 is arranged between the first interface 211 and the second interface 212 for detecting the gas pressure in the channel 21, and an air passage 24 is arranged between the second pressure sensor 231 and the first interface 211, and the air passage 24 can enable the gas flow passing through the air passage 24 to be equal to the gas flow passing through the inflating nozzle of the inflated object; the third signal transceiver unit 232 is configured to receive data detected by the second pressure sensor 231 and transmit the data to the first signal transceiver unit 122, the first signal transceiver unit 122 transmits the data detected by the second pressure sensor 231 to the first control circuit 12, the first control circuit 12 calculates a difference between the first pressure sensor 121 and the second pressure sensor 231 to obtain an internal pressure value of the object to be inflated, and controls the inflator 1 to close or open according to whether the difference reaches a preset inflation value, so as to achieve accurate detection of the internal pressure when the object to be inflated inflates and pressure inflation based on a linear relationship.

Application example

The novel test application example firstly connects the air nozzle 22 of the inflation connector 2 with the valve of the preset inflated object (such as a tire), so that the air flow of the air passage 24 of the inflation connector 2 is equal to the air flow of the valve of the inflated object; the inflator 1 is set with an inflation default value by the first control circuit 12, when the inflator 1 is activated, the first pressure sensor 121 is used to detect the pressure value (e.g. P1) at the outlet port 11 of the inflator 1 and transmit the pressure value to the first control circuit 12; the second pressure sensor 231 is used to detect the air pressure (e.g. P2) in the channel 21 of the inflation connector 2 and send the air pressure to the first signal transceiver 122 of the inflator 1 via the third signal transceiver 232, and then the first signal transceiver 122 transmits the air pressure (e.g. P2) detected by the second pressure sensor 231 to the first control circuit 12; comparing the pressure difference between the pressure detected by the first pressure sensor 121 (e.g., P1) and the pressure detected by the second pressure sensor 231 (e.g., P2) to obtain an internal pressure value of the object (e.g., P3); therefore, the internal pressure value of the inflated object (such as P3) can be more close to the actual internal pressure value of the inflated object; the internal pressure value (such as P3) of the inflated object is compared with the inflation default value, and the inflator is controlled to open and close according to the comparison result.

It should be noted that, when the large flow rate gas output by the inflator 1 flows to the inflation connector 2, the gas flow rate of the gas channel 24 arranged inside the inflation connector 2 is equal to the gas flow rate of the valve of the object to be inflated, so that the large flow rate gas output by the inflator 1 can enter the channel 21 of the inflation connector 2 in a flow rate limiting manner, and reaches the second pressure sensor 231, and the physical back pressure phenomenon caused by the excessive flow rate gas is not generated, so as to ensure that the second pressure sensor 231 can accurately detect the gas pressure difference in the channel 21 of the inflation connector 2; meanwhile, the large-flow gas output by the inflator 1 can enter the channel 21 of the inflation connector 2 in a flow limiting mode, and the inflator 1 can inflate the inflated object in a linear relation pressure value mode.

It should be noted that the above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. An inflation pressure detection device comprises an inflator, an inflation connector and an inflation pipeline, and is characterized in that the inflator is provided with an air outlet and a first control circuit, the first control circuit is provided with a first pressure sensor and a first signal receiving and transmitting unit, and the first control circuit can control the inflator to start or close;

the inflation connector is provided with a second control circuit, and the second control circuit is provided with a second pressure sensor and a third signal transceiving unit;

a channel is arranged in the inflation connector, a first interface and a second interface are respectively arranged at two ends of the channel, an air passage is arranged in the channel, the second interface is connected with an air nozzle, and the first interface is connected with an air outlet port of the inflator through an inflation pipeline;

the first pressure sensor is used for detecting the air pressure of the air outlet port, and the second pressure sensor is arranged in the inflation connector channel and used for detecting the air pressure in the channel;

the third signal transceiver unit is used for receiving the detection data of the second pressure sensor and sending the detection data to the first signal transceiver unit, and the first signal transceiver unit sends the data to the first control circuit.

2. The apparatus as claimed in claim 1, wherein the air passage is located between the second pressure sensor and the first interface, and the air flow of the air passage is equal to the air flow of the valve of the object to be inflated.

3. The device as claimed in claim 1, wherein the first control circuit comprises a second signal transceiver unit, the second signal transceiver unit is connected to an external intelligent device, and the intelligent device is used to control the first control circuit.

4. The device as claimed in claim 1, wherein the first control circuit comprises a control key and a display.

5. The apparatus as claimed in claim 1, wherein the second control circuit comprises a battery module and a charging port, the charging port is used for connecting to an external power source to charge the battery module, and the battery module is used for supplying power to the second control circuit, the second pressure sensor and the third signal transceiver unit.