CN209821625U - Intelligence is examined table junction box - Google Patents
Intelligence is examined table junction box Download PDFInfo
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- CN209821625U CN209821625U CN201920682151.8U CN201920682151U CN209821625U CN 209821625 U CN209821625 U CN 209821625U CN 201920682151 U CN201920682151 U CN 201920682151U CN 209821625 U CN209821625 U CN 209821625U
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Abstract
The utility model discloses an intelligence is examined table junction box, including the singlechip unit, the singlechip unit is connected with pulse input signal processing unit, pulse output signal processing unit, serial signal processing unit, liquid crystal touch display screen, temperature humidity atmospheric pressure signal processing unit, current input signal processing unit, current output signal processing unit and power supply unit, power supply unit be connected with the relay group, the relay group be connected with relay drive unit; the utility model has the advantages of measure directly perceived, and measured data can show in real time, has improved work efficiency.
Description
Technical Field
The utility model relates to a junction box technical field particularly, relates to an intelligence is examined table junction box.
Background
In the flowmeter verification industry, the checked meters sent by customers are various, the power supply voltage comprises AC220V, DC24V, DC12V, DC5V and the like, the signal output modes comprise pulse signal output and current signal output and the like which are different, and a pull-down resistor or a pull-down resistor is added to some checked meters during pulse signal output.
The prior art does not have a special intelligent connection box for the detected meter, if a flow standard device can not receive output signals of the detected meter in the verification process, a verification worker needs to utilize a plurality of devices such as a direct-current power supply, a universal meter and a signal generator to check the flow standard device and the detected meter, the process is complicated, and the efficiency is low.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem among the correlation technique, the utility model provides an intelligence is examined table junction box can overcome prior art's the aforesaid not enough.
In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:
the utility model provides an intelligence is examined table junction box, includes single chip unit, single chip unit connection has pulse input signal processing unit, pulse output signal processing unit, serial signal processing unit, liquid crystal touch display screen, temperature humidity atmospheric pressure signal processing unit, current input signal processing unit, current output signal processing unit and electrical unit, electrical unit be connected with relay group, relay group be connected with relay drive unit.
Further, the single chip microcomputer unit comprises a core chip, an 11.0592MHz crystal oscillator and a resistor capacitor, wherein the model of the core chip is STC12C5A08S 2.
Further, the chip of the pulse input signal processing unit comprises a photoelectric coupling chip, a schmidt trigger shaping chip 74LS14, a triode 9014 and a resistor capacitor, wherein the model of the photoelectric coupling chip is 6N137, and the model of the schmidt trigger shaping chip is 74LS 14.
Further, the current input signal processing unit comprises a reference voltage chip, a differential amplifier chip, an AD conversion chip, a capacitor, a resistor and a crystal oscillator, wherein the model of the reference voltage chip is AD780, the model of the differential amplifier chip is AD620, and the model of the AD conversion chip is AD 7705.
Further, the pulse output signal processing unit comprises a programmable pulse output chip, a schmitt trigger shaping chip and an active crystal oscillator, wherein the model of the programmable pulse output chip is AD9833, and the model of the schmitt trigger shaping chip is 74LS 14.
Further, the current output signal processing unit is composed of a DA conversion chip AD5410, a triode MJD31C, a potentiometer and a resistor capacitor, wherein the model of the DA conversion chip is AD5410, and the model of the triode is MJD 31C.
Further, the serial signal processing unit is composed of a serial interface chip HIN232 and a resistor capacitor, and the serial interface chip is of the type HIN 232.
Furthermore, the temperature, humidity and atmospheric pressure signal processing unit is composed of a temperature, humidity and atmospheric pressure acquisition chip BME280, a power supply chip AMS1117, a triode 9014 and a resistance capacitor, the model of the temperature, humidity and atmospheric pressure acquisition chip is BME280, and the model of the power supply chip is AMS 1117.
Further, the relay driving unit is composed of a Schmidt trigger shaping chip 74LS14, a triode 9013, a diode and a resistor, and the model of the Schmidt trigger shaping chip is 74LS 14.
Further, the power supply unit comprises a switch power supply, a power supply module 24D15, a first power supply chip LM2596-12.0, a second power supply chip LM2596-5.0, an inductor, a capacitor and a diode, wherein the model of the power supply module is 24D15, the model of the first power supply chip LM2596-12.0, and the model of the second power supply chip LM 2596-5.0.
The utility model has the advantages that: the utility model discloses following beneficial effect has:
1. the utility model discloses simple, the debugging convenience of wiring with the examined table has removed a lot of complicated on-the-spot wiring from, has saved a large amount of on-the-spot installation wiring and debugging time, measures directly perceived, has improved work efficiency.
2. The utility model discloses accessible liquid crystal touch display screen sets for working method and detects the pulse and the current signal of examined table output for input mode to carry out real-time display on liquid crystal touch display screen.
3. The utility model discloses accessible liquid crystal touch display screen sets for the working method and is output mode to accessible liquid crystal touch display screen sets for output standard's frequency and current signal, is used for carrying out the check-up to the flow standard device.
4. The utility model discloses accessible liquid crystal touch display screen sets for working method and is direct mode, will be examined the harmless flow standard device that conveys of table pulse or current signal to carry out real-time supervision to the signal value on local liquid crystal touch display screen.
5. The utility model discloses can gather job site environment's real-time temperature, humidity, atmospheric pressure information to show in real time on liquid crystal touch display screen.
6. The utility model discloses the supply voltage of output examined table is set for to accessible liquid crystal touch display screen, including AC220V, DC24V, DC12V, DC 5V.
7. The utility model discloses install the resistance on the front panel and press from both sides, can place resistance wherein, set up resistance through liquid crystal touch display screen and be pull-up or drop-down mode.
8. The utility model discloses there is RS232 communication interface, but remote connection to computer to the accessible computer carries out remote control and data reading.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only 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 diagram of the electrical structure of the present invention;
FIG. 2 is an electrical schematic diagram of the single chip unit of the present invention;
fig. 3 is an electrical schematic diagram of the pulse input signal processing unit of the present invention;
fig. 4 is an electrical schematic diagram of the current input signal processing unit of the present invention;
fig. 5 is an electrical schematic diagram of the pulse output signal processing unit of the present invention;
fig. 6 is an electrical schematic diagram of the current output signal processing unit of the present invention;
fig. 7 is an electrical schematic diagram of the serial signal processing unit of the present invention;
fig. 8 is an electrical schematic diagram of the humidity, temperature and barometric pressure signal processing unit of the present invention;
fig. 9 is an electrical schematic diagram of a relay driving unit according to the present invention;
fig. 10 is an electrical schematic diagram of the power supply unit of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
As shown in FIG. 1, according to the utility model discloses an intelligence quilt examine table junction box, including single chip unit 8, single chip unit 8 is connected with pulse input signal processing unit 4, pulse output signal processing unit 5, serial signal processing unit 6, liquid crystal touch display screen 7, temperature humidity atmospheric pressure signal processing unit 9, current input signal processing unit 11, current output signal processing unit 12 and electrical unit 13, electrical unit 13 be connected with relay group 14, relay group 14 be connected with relay drive unit 10.
As shown in fig. 2, the single chip microcomputer unit is composed of 51 series single chip microcomputers STC12C5a08S2, 11.0592MHz crystal oscillator and matched resistance and capacitance, the single chip microcomputer is a command center of the whole system, and all signal acquisition, generation and display are completed by the single chip microcomputer.
As shown in fig. 3, the pulse input signal processing unit is composed of a photoelectric coupling chip 6N137, a schmidt trigger shaping chip 74LS14, a triode 9014 and a matched resistance capacitor, and can filter, shape and level-match pulse signals output by the detected meter and then send the pulse signals to a counting pin of the single chip microcomputer to calculate pulse frequency.
As shown in fig. 4, the current input signal processing unit is composed of a reference voltage chip AD780, a differential amplifier chip AD620, an AD conversion chip AD7705 and a matched resistance-capacitance crystal oscillator, and can convert a current signal output by the meter to be detected into a voltage signal through a sampling resistor, differentially amplify the voltage signal, send the voltage signal to the AD7705, and read the current signal value of the meter to be detected through the single chip microcomputer.
As shown in fig. 5, the pulse output signal processing unit is composed of a programmable pulse output chip AD9833, a schmitt trigger shaping chip 74LS14 and a 1MHz active crystal oscillator, the crystal oscillator and 74LS14 provide standard reference pulse signals for the AD9833, and the frequency set by the liquid crystal touch screen controls the AD9833 to output pulses through the single chip microcomputer.
As shown in fig. 6, the current output signal processing unit is composed of a DA conversion chip AD5410, a triode MJD31C, a potentiometer and a matched resistor and capacitor, the current set by the liquid crystal touch screen is controlled by the single chip to output a corresponding voltage value by the AD5410, and then is converted into a current output by the MJD31C, and the potentiometer can play a role in adjusting the fullness.
As shown in fig. 7, the serial signal processing unit is composed of a serial interface chip HIN232 and a matched resistor and capacitor, and the single chip microcomputer converts the serial signal level into a standard RS232 level through the HIN232 for digital communication with a computer.
As shown in fig. 8, the temperature, humidity and atmospheric pressure signal processing unit is composed of a temperature, humidity and atmospheric pressure acquisition chip BME280, a power supply chip AMS1117, a triode 9014 and a matched resistance capacitor, the AMS1117 converts a 5V power supply into 3.3V to supply power to the BME280, the 9014 plays a role in level conversion, and the single chip microcomputer reads out temperature, humidity and atmospheric pressure signals of the current environment through the BME280 and displays the signals on the liquid crystal touch screen.
As shown in fig. 9, the relay driving unit and the relay group are composed of a schmidt trigger shaping chip 74LS14, a triode 9013, a relay, a matched diode and a resistor, and a control signal output by the single chip microcomputer drives the relay to operate after being amplified by 74LS14 and 9013, so that corresponding signal mode switching and different power supply output switching are controlled.
As shown in fig. 10, the power supply unit is composed of a standard switching power supply, a power supply module 24D15, a power supply chip LM2596-12.0, a power supply chip LM2596-5.0, and a matching inductor, capacitor, and diode, the switching power supply converts an AC220V AC power supply into a DC24V DC power supply, the LM2596-12.0 converts a DC24V power supply into a DC12V power supply output, the LM2596-5.0 converts a DC24V power supply into a DC5V power supply output, and the LM 15 converts a DC24V power supply into a DC ± 15V output.
The liquid crystal touch display screen adopts a 4.3-inch serial port touch display screen, a man-machine interface is provided, and the watching and the operation of an operator are facilitated.
For the convenience of understanding the above technical solutions of the present invention, the above technical solutions of the present invention are explained in detail through specific use modes below.
According to an intelligence quilt examine table junction box, constitute including singlechip unit, pulse input signal processing unit, current input signal processing unit, pulse output signal processing unit, current output signal processing unit, serial signal processing unit, electrical unit, relay group, relay drive unit, temperature humidity atmospheric pressure signal processing unit, liquid crystal touch display screen. The pulse input signal processing unit 4 is provided with a pulse signal input interface 1, the pulse output signal processing unit 5 is provided with a pulse signal output interface 2, the serial signal processing unit 6 is provided with an RS232 communication interface 3, the current input signal processing unit 11 is provided with a current signal input interface 15, the current output signal processing unit 12 is provided with a current signal output interface 16, the relay group 14 is connected with a power output interface 17, when the pulse signal processing device is used, the pulse signal input interface, the current signal input interface, the power output interface and a detected meter are connected, the pulse signal output interface, the current signal output interface and a flow standard device are connected, the RS232 communication interface is connected with a computer, and all the interfaces are connected with the single chip microcomputer through corresponding signal processing units.
To sum up, the utility model has the advantages of measure directly perceived, and measured data can show in real time, has improved work efficiency.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an intelligence is examined table junction box, its characterized in that, includes single chip unit (8), single chip unit (8) are connected with pulse input signal processing unit (4), pulse output signal processing unit (5), serial signal processing unit (6), liquid crystal touch display screen (7), temperature humidity atmospheric pressure signal processing unit (9), current input signal processing unit (11), current output signal processing unit (12) and electrical unit (13), electrical unit (13) be connected with relay group (14), relay group (14) be connected with relay drive unit (10).
2. The junction box of the intelligent detected meter as claimed in claim 1, wherein the single chip microcomputer unit (8) comprises a core chip, a 11.0592MHz crystal oscillator and a resistor capacitor, and the model of the core chip is STC12C5A08S 2.
3. The intelligent meter connection box as claimed in claim 2, wherein the pulse input signal processing unit (4) comprises a photoelectric coupling chip, a schmidt trigger shaping chip 74LS14, a triode 9014 and a resistor capacitor, the photoelectric coupling chip is 6N137, and the schmidt trigger shaping chip is 74LS 14.
4. The junction box of claim 3, wherein the current input signal processing unit (11) comprises a reference voltage chip, a differential amplifier chip, an AD conversion chip, a capacitor, a resistor and a crystal oscillator, wherein the model of the reference voltage chip is AD780, the model of the differential amplifier chip is AD620, and the model of the AD conversion chip is AD 7705.
5. An intelligent meter-checking junction box according to claim 4, characterized in that the pulse output signal processing unit (5) comprises a programmable pulse output chip, a Schmidt trigger shaping chip and an active crystal oscillator, wherein the model of the programmable pulse output chip is AD9833, and the model of the Schmidt trigger shaping chip is 74LS 14.
6. An intelligent meter connection box as claimed in claim 5, wherein said current output signal processing unit (12) is composed of a DA conversion chip AD5410, a triode MJD31C, a potentiometer and a resistor-capacitor, said DA conversion chip is AD5410 type, said triode is MJD31C type.
7. An intelligent meter connection box as claimed in claim 6, wherein the serial signal processing unit (6) is composed of a serial interface chip HIN232 and a resistor capacitor, and the model of the serial interface chip is HIN 232.
8. The junction box of the intelligent detected meter as claimed in claim 7, wherein the temperature, humidity and atmospheric pressure signal processing unit (9) is composed of a temperature, humidity and atmospheric pressure acquisition chip BME280, a power supply chip AMS1117, a triode 9014 and a resistor capacitor, wherein the temperature, humidity and atmospheric pressure acquisition chip is of the type of BME280, and the power supply chip is of the type of AMS 1117.
9. An intelligent meter-checking junction box according to claim 8, characterized in that the relay driving unit (10) is composed of a Schmidt trigger shaping chip 74LS14, a triode 9013, a diode and a resistor, wherein the model of the Schmidt trigger shaping chip is 74LS 14.
10. The junction box of an intelligent checked meter as claimed in claim 9, wherein the power supply unit (13) is composed of a switching power supply, a power supply module 24D15, a first power supply chip LM2596-12.0, a second power supply chip LM2596-5.0, an inductor, a capacitor and a diode, the model of the power supply module is 24D15, the model of the first power supply chip LM2596-12.0, and the model of the second power supply chip LM 2596-5.0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920682151.8U CN209821625U (en) | 2019-05-14 | 2019-05-14 | Intelligence is examined table junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920682151.8U CN209821625U (en) | 2019-05-14 | 2019-05-14 | Intelligence is examined table junction box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209821625U true CN209821625U (en) | 2019-12-20 |
Family
ID=68883254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920682151.8U Expired - Fee Related CN209821625U (en) | 2019-05-14 | 2019-05-14 | Intelligence is examined table junction box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209821625U (en) |
-
2019
- 2019-05-14 CN CN201920682151.8U patent/CN209821625U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191220 |
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| CF01 | Termination of patent right due to non-payment of annual fee |