CN215492188U - High-precision digital transmission pressure patrol detector - Google Patents
High-precision digital transmission pressure patrol detector Download PDFInfo
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- CN215492188U CN215492188U CN202122393530.5U CN202122393530U CN215492188U CN 215492188 U CN215492188 U CN 215492188U CN 202122393530 U CN202122393530 U CN 202122393530U CN 215492188 U CN215492188 U CN 215492188U
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Abstract
The utility model relates to the technical field of patrolling devices, in particular to a high-precision digital transmission pressure patrolling device. One end of the copper piece is provided with a threaded interface for connecting an external pressure container to be tested; the pressure sensor is connected with the copper part and used for collecting the pressure value of the pressure container to be measured, the pressure sensor is fixed in the copper part, and one side of a ceramic diaphragm of the pressure sensor is opposite to a central cylindrical cavity in the copper part; the plastic shell is mounted at one end of the copper piece far away from the threaded interface end, and two serial ports of a main control unit IC1 of the circuit board are connected with two leads L1 and L2 to serve as buses; the circuit board is fixedly installed in the inner cavity of the plastic shell, the pressure sensor is electrically connected with the main control unit IC1 of the circuit board 6 through an AD converter IC2, data communication is carried out through a nonpolar bus, wiring is easy, use is convenient, sensitivity and linearity are good, and reliability is high.
Description
Technical Field
The utility model relates to the technical field of patrolling devices, in particular to a high-precision digital transmission pressure patrolling device.
Background
At present along with the rapid development of urban construction, all kinds of buildings are increasing day by day, in order to avoid the huge loss that the conflagration emergence caused, all kinds of buildings have all been equipped with the pressure storage formula fire equipment, and as time lapses, a lot of pressure storage formula fire equipment can drop the pressure, lead to in case the conflagration takes place, the condition that the efficiency of putting out a fire can drop or even appear being difficult to put out a fire, current pressure storage formula fire equipment all is equipped with the manometer, need the manual scene to look over one by one, current pressure inspection device need draw forth three lines when the installation, installation cost is high, work load is big, inefficiency, exist not enoughly.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art, and provides a high-precision digital transmission pressure polling device which can be used for carrying out real-time pressure detection on pressure storage type fire fighting equipment and solving the problems of large workload and low efficiency of field checking.
The technical scheme of the utility model is as follows: a high-precision digital transmission pressure patrol detector, comprising:
one end of the copper piece is provided with a threaded interface for connecting an external pressure container to be tested;
the pressure sensor is used for acquiring the pressure value of a pressure container to be measured, which is connected with the copper part, and is fixed in the copper part, wherein one side of a ceramic diaphragm of the pressure sensor is opposite to a central cylindrical cavity in the copper part;
the plastic shell is mounted at one end, far away from the threaded interface end, of the copper piece;
the circuit board is fixedly arranged in the inner cavity of the plastic shell, and two serial ports of a main control unit IC1 of the circuit board are connected with two leads L1 and L2 to be used as buses;
the pressure sensor is electrically connected with a main control unit IC1 of the circuit board through an AD converter IC 2.
As a further improvement of the technical solution of the present invention, a wheatstone bridge circuit is integrated inside the pressure sensor, two voltage output ends of the wheatstone bridge circuit are connected to an analog input port of the AD converter IC2, and a digital port of the AD converter IC2 is connected to a signal port of the main control unit IC1 of the circuit board; the main control unit IC1 of the circuit board reserves two serial ports for connecting L1 and L2 as buses, so that a subsequent encoder can conveniently carry out address coding on the utility model.
As a further improvement of the technical solution of the present invention, the model of the main control unit IC1 is PIC12CE 519.
As a further improvement of the technical solution of the present invention, the AD converter IC2 is a ZEN7310 model.
In the technical scheme, the pressure sensor consists of three parts, namely a conventional ceramic ring, a ceramic diaphragm and a ceramic cover plate, wherein the ceramic diaphragm is an elastic body. The pressure acquisition device can be installed on a pressure pipeline of an external pressure container, the pressure of fluid medium in the pressure container directly acts on the surface of a ceramic diaphragm to enable the diaphragm to generate micro deformation, the variable resistance on a Wheatstone bridge circuit is changed to generate a voltage difference value, the analog quantity of the voltage difference value is acquired and transmitted to a main control unit IC1 through an AD converter IC2, and the pressure acquisition function is completed.
The utility model has the advantages of simple structure, small volume, easy wiring, convenient use, good sensitivity and linearity and high reliability, and carries out data communication through the non-polar two buses. The equipment is coded by two buses which are connected to the serial port of the main control unit of the circuit board and can be used for realizing the parallel routing inspection of a plurality of devices.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an electrical connection diagram of the pressure sensor and the AD converter of the present invention.
Fig. 3 is an electrical connection diagram of the AD converter and the circuit board main control unit according to the present invention.
Fig. 4 is an installation diagram of embodiment 2 of the present invention.
Reference numerals: the fire extinguishing system comprises a threaded interface 1, a cylindrical cavity 2, a copper piece 3, a pressure sensor 4, a plastic shell 5, a circuit board 6, a main control unit IC1, an AD converter IC2, buses L1-L2, an intelligent control module 7, a dry powder fire extinguishing controller 8 and an alarm host 9.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
Example 1
Referring to fig. 1-3, the present invention provides a high-precision digital transmission pressure polling device, which includes a copper part 3, wherein one end of the copper part 3 is provided with a threaded interface 1 for connecting an external pressure container to be tested; the pressure sensor 4 is connected with the copper part 3 and used for collecting the pressure value of a pressure container to be measured, the pressure sensor 4 is fixed in the copper part 3, and one side of a ceramic diaphragm of the pressure sensor 4 is opposite to the central cylindrical cavity 2 in the copper part 3; the plastic shell 5 is arranged at one end of the copper part 3 far away from the end of the threaded connector 1; the circuit board 6 fixed mounting is in the inner chamber of plastic casing 5, two serial ports of the main control unit IC1 of circuit board 6 connect two wires L1 and L2 and be the bus, pressure sensor 4 passes through AD converter IC2 (the model is ZEN7310 with the main control unit IC1 (the model is PIC12CE519) of circuit board 6, has and gathers the precision height, and the integrated level is high, and response speed is fast, interference immunity is strong etc.) and is connected electrically.
In this embodiment, a wheatstone bridge circuit is integrated inside the pressure sensor 4, two voltage output ends of the wheatstone bridge circuit are connected to an analog input port of the AD converter IC2, a digital port of the AD converter IC2 is connected to a signal port of the main control unit IC1 of the circuit board 6, and two serial ports (GP0 and GP1) are reserved in the main control unit IC1 of the circuit board 6 to connect with the L1 and the L2 as buses, so that a subsequent encoder can conveniently perform address coding on the present invention.
Specifically, in the present embodiment, the pressure sensor 4 is composed of three parts, namely a conventional ceramic ring, a ceramic diaphragm and a ceramic cover plate, wherein the ceramic diaphragm is an elastomer.
The pressure acquisition device can be installed on a pressure pipeline of an external pressure container, the pressure of fluid medium in the pressure container directly acts on the surface of a ceramic diaphragm to enable the diaphragm to generate micro deformation, the variable resistor R9 on a Wheatstone bridge circuit is changed, so that a voltage difference value is generated, the analog quantity of the voltage difference value is acquired through the AD converter IC2 and is transmitted to the main control unit IC1, and the pressure acquisition function is completed.
Example 2
Referring to fig. 4, the utility model provides an ultrafine dry powder pressure inspection system, which comprises an inspection device, an intelligent control module, a dry powder fire-extinguishing controller and an alarm host, wherein the signal input end of the dry powder fire-extinguishing controller (preferably YH3100 type dry powder fire-extinguishing control) and the inspection device pass through ZR-RVS-2 x 1.0-1.5 mm2 ofThe fire-retardant twisted pair carries out bus connection, the dry powder fire-extinguishing controller passes through intelligent control module (preferred ZH611) signal connection with the alarm host computer, can realize that the alarm host computer carries out pressure address inquiry to the dry powder fire-extinguishing apparatus that the dry powder fire-extinguishing controller in each region administered, and monitoring range is wide, and the pressure value of superfine dry powder fire-extinguishing apparatus is gathered to the accuracy, conveniently carries out operations such as fixed point inquiry, tonifying qi to the steel bottle that does not conform to the pressure value.
The working principle is as follows:
the pressure value of a connected pressure container or pressure pipeline is monitored in real time through a pressure sensor 4, the specific principle is that fluid or air pressure in a cylindrical cavity 2 directly acts on the front surface of a ceramic diaphragm of the pressure sensor 4 to enable the diaphragm to generate tiny deformation, a thick film resistor is printed on the back surface of the ceramic diaphragm to be connected into a Wheatstone bridge, due to the piezoresistive effect of a piezoresistor, the bridge generates a voltage signal which is in direct proportion to the voltage, is in direct proportion to excitation voltage, is uploaded to a high-precision AD converter IC2 of a circuit board 6 to convert an analog quantity into a 24-bit digital quantity AD value, is compared with the AD value (upper limit value and lower limit value) in a main control unit IC1, and if the acquired AD value is smaller than the lower limit value, a low-pressure alarm signal is output at the ends of buses L1 and L2; and if the acquired AD value is larger than the upper limit value, outputting an overpressure alarm signal at the ends of buses L1 and L2. The collected real-time data is stored in an internal register to wait for the polling of the alarm host.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A high-accuracy digital transmission pressure patrol detector, comprising:
one end of the copper piece (3) is provided with a threaded interface (1) for connecting an external pressure container to be tested;
the pressure sensor (4) is used for collecting the pressure value of a pressure container to be measured, which is connected with the copper part (3), and the pressure sensor (4) is fixed in the copper part (3), wherein one side of a ceramic diaphragm of the pressure sensor (4) is over against the central cylindrical cavity (2) in the copper part (3);
the plastic shell (5) is mounted at one end of the copper piece (3) far away from the end of the threaded connector (1);
the circuit board (6) is fixedly arranged in the inner cavity of the plastic shell (5), and two serial ports of a main control unit (IC1) of the circuit board (6) are connected with two leads L1 and L2 to serve as buses;
the pressure sensor (4) is electrically connected with a main control unit (IC1) of the circuit board (6) through an AD converter (IC 2).
2. A high precision digital transmission pressure patrol instrument according to claim 1, wherein: a Wheatstone bridge circuit is integrated in the pressure sensor (4), two voltage output ends of the Wheatstone bridge circuit are connected to an analog input port of an AD converter (IC2), and a digital port of the AD converter (IC2) is connected with a signal port of a main control unit (IC1) of the circuit board (6).
3. A high precision digital transmission pressure patrol instrument according to claim 1, wherein: the master control unit (IC1) model is the PIC12CE 519.
4. A high precision digital transmission pressure patrol instrument according to claim 1, wherein: the AD converter (IC2) is ZEN 7310.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122393530.5U CN215492188U (en) | 2021-09-30 | 2021-09-30 | High-precision digital transmission pressure patrol detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122393530.5U CN215492188U (en) | 2021-09-30 | 2021-09-30 | High-precision digital transmission pressure patrol detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215492188U true CN215492188U (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122393530.5U Active CN215492188U (en) | 2021-09-30 | 2021-09-30 | High-precision digital transmission pressure patrol detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215492188U (en) |
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2021
- 2021-09-30 CN CN202122393530.5U patent/CN215492188U/en active Active
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