CN207424672U - Laser level control instrument test device - Google Patents
Laser level control instrument test device Download PDFInfo
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- CN207424672U CN207424672U CN201721650856.9U CN201721650856U CN207424672U CN 207424672 U CN207424672 U CN 207424672U CN 201721650856 U CN201721650856 U CN 201721650856U CN 207424672 U CN207424672 U CN 207424672U
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Abstract
The utility model discloses a kind of laser level control instrument test devices, are related to laser level control instrument technical field.The test device includes power module, liquid level signal simulation generation module, on-off model test module and 4mA 20mA current signal test modules.The signal output part of the liquid level signal simulation generation module is connected with the level control signal input terminal of laser level control instrument；The signal input part of the on-off model test module is connected with the on-off model output terminal of the laser level control instrument；The signal input part of the 4mA 20mA current signal test modules is connected with the 4mA 20mA current signal output ends of the laser level control instrument.Described device, which can be simulated, generates the liquid level input signal that adjustable laser level control instrument needs, and can realize and the output signal of laser level control instrument is measured, and can quickly exclude the failure of laser level control instrument.
Description
Technical field
The utility model is related to laser level control instrument technical field more particularly to a kind of laser level control instrument test dresses
It puts.
Background technology
In glass furnace automation control appliance, measure and the laser level control instrument of feedback control melten glass liquid level is
One very important equipment.When equipment when something goes wrong, generally solved by technical staff and producer telephonic communication or by equipment
Factory's maintenance is returned, so not only efficiency is low, also very unfavorable to the continuous production of enterprise.There is an urgent need to a testers by Field Force
The input/output signal of equipment is detected in time, determined in time and is targetedly solved the problems, such as.
Utility model content
Technical problem to be solved in the utility model is how to provide one kind to simulate the adjustable laser liquid of generation
The liquid level input signal that face controller needs, and to laser level control that the output signal of laser level control instrument measures
Instrument test device.
In order to solve the above technical problems, technical solution adopted in the utility model is：A kind of laser level control instrument is surveyed
Trial assembly is put, it is characterised in that：Including power module, liquid level signal simulation generation module, on-off model test module and
4mA-20mA current signal test modules, the power module are used in the test device module powered be needed to provide work
Make power supply, the level control signal of the signal output part and laser level control instrument of the liquid level signal simulation generation module inputs
End connection, the liquid level signal simulation generation module generate variable liquid level signal for simulating；The on-off model test
The signal input part of module is connected with the on-off model output terminal of the laser level control instrument, the on-off model test
Module is used to test and indicate the output state of two groups of switching values of laser level control instrument；The 4mA-20mA current signals are surveyed
The signal input part of die trial block is connected with the 4mA-20mA current signal output ends of the laser level control instrument, the 4mA-
20mA current signals test module is used to carry out independent measurement to three road 4-20mA electric currents of laser level control instrument output.
Further technical solution is：The input termination alternating current 220V power supply of the power module and direct current 24V electricity
Source, direct current 24V- direct current 5V power conversion modules are provided in the power module, and the power conversion module uses LM2575-
5.0 type power conversion chips.
Further technical solution is：The liquid level signal simulation generation module includes NE555 cake cores U1, the U1
1 foot ground connection, power supply VCC is connected respectively with 8 feet of the U1 and 4 feet, and 4 feet of the U1 are divided into three tunnels after resistance R2, the
Be connected all the way with 7 feet of the U1, the second tunnel is connected through diode D1 with 2 feet of the U1, the 3rd tunnel through resistance R3 with it is described
The 6 feet connection of U1,2 feet of the U1 are grounded after be connected with 6 feet through capacitance C1 ground connection, the 5 foot meridian capacitor C2 of the U1, the U1
Base stage of 3 feet with triode Q1 after resistance R4 be connected, the emitter ground connection of the triode Q1, the collection of the triode Q1
Electrode is divided into three tunnels, and the first via meets VCC through resistance R5, and the second tunnel is connected with one end of resistance R6, the 3rd tunnel and the one of resistance R7
End connection；
The other end of resistance R6 is divided into two-way, and the first via is connected with the in-phase input end of operational amplifier U2A, and the second tunnel leads to
Connector J5 is crossed to be connected with a fixing end of potentiometer RT；The 11 feet ground connection of the operational amplifier U2A, 4 feet meet VCC；Fortune
2 feet for calculating amplifier U2A are connected with the output terminal of the operational amplifier U2A, and the output terminal of operational amplifier U2A is through resistance R8
Be connected with the in-phase signal input terminal of operational amplifier U2D, the inverting input of operational amplifier U2D through respectively with resistance R10
And one end connection of resistance R12, the other end ground connection of resistance R10, the other end of resistance R12 are divided into two-way, the first via and fortune
The output terminal connection of amplifier U2D is calculated, the second tunnel is connected with one end of capacitance C3, the other end of capacitance C3 and the one of resistance R14
End connection, the other end of resistance R14 simulate a signal output part of generation module for the liquid level signal；
The other end of resistance R7 is divided into two-way, and the first via is connected with the in-phase input end of operational amplifier U2B, and the second tunnel leads to
It crosses connector J5 to be connected with another fixing end of potentiometer RT, the movable end ground connection of potentiometer RT；The operational amplifier U2B
11 feet ground connection, 4 feet meet VCC；2 feet of operational amplifier U2B are connected with the output terminal of the operational amplifier U2B, and computing is put
The output terminal of big device U2B is connected through resistance R9 with the in-phase signal input terminal of operational amplifier U2C, and operational amplifier U2C's is anti-
Phase input terminal is connected through one end respectively with resistance R11 and resistance R13, and the other end ground connection of resistance R11, resistance R13's is another
One end is divided into two-way, and the first via is connected with the output terminal of operational amplifier U2C, and the second tunnel is connected with one end of capacitance C4, capacitance
The other end of C4 is connected with one end of resistance R15, and the other end of resistance R15 simulates the another of generation module for the liquid level signal
A signal output part.
Further technical solution is：The on-off model test module includes relay K1 and relay K2, after
One end of the coil of electric appliance K1 is connected with firewire, and the other end of the coil of relay K1 connects with a terminals of connector J2
It connects, a termination+24V power supplys of the contact of relay K1, the other end of the contact of relay K1 through resistance R16 and shines successively
It is grounded after diode (LED) 1；One end of the coil of relay K2 is connected with firewire, and the other end of the coil of relay K2 is with patching
Another terminals connection of part J2, a termination+24V power supplys of the contact of relay K2, the other end of the contact of relay K2
It is grounded successively after resistance R17 and Light-emitting diode LED 2.
Further technical solution is：The 4mA-20mA current signals test module includes connector J3, described to connect
The input terminal of plug-in unit J3 is connected with 3 road 4mA-20mA current signal output ends of the laser level control instrument, the connector
The output terminal of J3 is grounded after single-pole three-throw switch S and ammeter A successively.
It is using advantageous effect caused by above-mentioned technical proposal：Liquid level signal simulation in the test device generates
The liquid level signal that the simulation of module generation is variable is input to tested laser level control instrument, and laser level control instrument is according to input
Liquid level signal, on-off model test module and 4mA-20mA current signal test modules are output a control signal to, by opening
Signal testing module is measured in pass and 4mA-20mA current signals test module tests the output signal of laser level control instrument,
The output signal of testing laser level control instrument（Two groups of on-off models and three road 4-20mA current signals）It is whether normal and give
With instruction.By described device, can be conducive to select at the first time where the problem of first time judging laser level control instrument
Correct solution is selected, improves the efficiency for solving plant issue.
Description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the functional block diagram of test device described in the utility model embodiment；
Fig. 2 is the schematic diagram of power conversion module described in test device described in the utility model embodiment；
Fig. 3 is the partial circuit principle of liquid level signal simulation generation module in test device described in the utility model embodiment
Figure；
Fig. 4 is the partial circuit principle of liquid level signal simulation generation module in test device described in the utility model embodiment
Figure；
Fig. 5 is the catenation principle figure of potentiometer and connector J5 in test device described in the utility model embodiment；
Fig. 6 is the circuit diagram of on-off model test module in test device described in the utility model embodiment；
Fig. 7 is the circuit theory of test device 4mA-20mA current signal test modules described in the utility model embodiment
Figure.
Specific embodiment
With reference to the attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by, it is clear that described embodiment is only the part of the embodiment rather than whole of the utility model
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained shall fall within the protection scope of the present invention.
Many details are elaborated in the following description in order to fully understand the utility model, but this practicality is new
Type can also be implemented using other different from other manner described here, and those skilled in the art can be without prejudice to this reality
With doing similar popularization in the case of new intension, therefore the utility model is from the limitation of following public specific embodiment.
As shown in Figure 1, the utility model embodiment discloses a kind of laser level control instrument test device, including power supply mould
Block, liquid level signal simulation generation module, on-off model test module and 4mA-20mA current signal test modules.The electricity
Source module is used to that the module powered to be needed to provide working power in the test device, and the liquid level signal simulates generation module
Signal output part be connected with the level control signal input terminal of laser level control instrument, the liquid level signal simulates generation module
Variable liquid level signal is generated for simulating；The signal input part of the on-off model test module and the laser liquid level control
The on-off model output terminal connection of instrument processed, the on-off model test module are used to test and indicate laser level control instrument
Two groups of switching values output state；The signal input part of the 4mA-20mA current signals test module and the laser liquid level
The 4mA-20mA current signal output ends connection of controller, the 4mA-20mA current signals test module are used for laser liquid level
Three road 4-20mA electric currents of controller output carry out independent measurement.
There are two types of input powers in the test device, respectively alternating current 220V and direct current 24V, in the power module
Direct current 24V- direct current 5V power conversion modules are provided with, the power conversion module uses LM2575-5.0 type power conversion cores
Piece, physical circuit as shown in Fig. 2, by LM2575-5.0 by the direct current 24V power conversions of input be 5V power supplys, for the test
Device in device uses.
As shown in Fig. 3-and Fig. 4,（Such as the A connections in a and Fig. 4 in Fig. 3, such as the B connections in the b and Fig. 4 in Fig. 3）Institute
Stating liquid level signal simulation generation module includes the 1 foot ground connection of NE555 cake cores U1, the U1, and power supply VCC is respectively with the U1's
8 feet and the connection of 4 feet, 4 feet of the U1 are divided into three tunnels after resistance R2, and the first via is connected with 7 feet of the U1, the second tunnel two
Pole pipe D1 is connected with 2 feet of the U1, and the 3rd tunnel is connected through resistance R3 with 6 feet of the U1, and 2 feet of the U1 are connected with 6 feet
It is grounded by capacitance C1, the 5 foot meridian capacitor C2 of U1 ground connection, the base stage of 3 feet of the U1 after resistance R4 with triode Q1
Connection, the emitter ground connection of the triode Q1, the collector of the triode Q1 are divided into three tunnels, and the first via connects through resistance R5
VCC, the second tunnel are connected with one end of resistance R6, and the 3rd tunnel is connected with one end of resistance R7.
The other end of resistance R6 is divided into two-way, and the first via is connected with the in-phase input end of operational amplifier U2A, and the second tunnel leads to
It crosses connector J5 to be connected with a fixing end of potentiometer RT, as shown in Figure 5；The 11 feet ground connection of the operational amplifier U2A, 4
Foot meets VCC；2 feet of operational amplifier U2A are connected with the output terminal of the operational amplifier U2A, the output of operational amplifier U2A
End is connected through resistance R8 with the in-phase signal input terminal of operational amplifier U2D, and the inverting input of operational amplifier U2D is through respectively
It being connected with one end of resistance R10 and resistance R12, the other end ground connection of resistance R10, the other end of resistance R12 is divided into two-way, the
The output terminal with operational amplifier U2D is connected all the way, and the second tunnel is connected with one end of capacitance C3, the other end and resistance of capacitance C3
One end connection of R14, the other end of resistance R14 simulate a signal output part of generation module for the liquid level signal；
The other end of resistance R7 is divided into two-way, and the first via is connected with the in-phase input end of operational amplifier U2B, and the second tunnel leads to
It crosses connector J5 to be connected with another fixing end of potentiometer RT, the movable end ground connection of potentiometer RT, as shown in Figure 5；The fortune
The 11 feet ground connection of amplifier U2B is calculated, 4 feet meet VCC；The output terminal of 2 feet of operational amplifier U2B and the operational amplifier U2B
Connection, the output terminal of operational amplifier U2B are connected through resistance R9 with the in-phase signal input terminal of operational amplifier U2C, and computing is put
The inverting input of big device U2C is connected through one end respectively with resistance R11 and resistance R13, the other end ground connection of resistance R11,
The other end of resistance R13 is divided into two-way, and the first via is connected with the output terminal of operational amplifier U2C, the second tunnel and the one of capacitance C4
End connection, the other end of capacitance C4 are connected with one end of resistance R15, and the other end of resistance R15 is liquid level signal simulation production
Another signal output part of raw module.
The liquid level signal simulation generation module combines amplification modulate circuit using NE555 chips can generate laser liquid level control
The input signal of instrument processed adjusts circuit parameter using potentiometer RT, can the variation of simulated implementation level value.
As shown in fig. 6, the on-off model test module includes relay K1 and relay K2, the coil of relay K1
One end be connected with firewire, the other end of the coil of relay K1 is connected with a terminals of connector J2, relay K1's
One termination+24V power supplys of contact, the other end of the contact of relay K1 is successively after resistance R16 and Light-emitting diode LED 1
Ground connection；One end of the coil of relay K2 is connected with firewire, the other end of the coil of relay K2 and connector J2 another
Terminals connect, and a termination+24V power supplys of the contact of relay K2, the other end of the contact of relay K2 is successively through resistance R17
And it is grounded after Light-emitting diode LED 2.Test device utilizes built-in relay and two indicator lights（LED1 and LED2）It can survey
It tries and indicates the output state of two groups of switching values of laser level control instrument.
As shown in fig. 7, the 4mA-20mA current signals test module includes connector J3, the input of the connector J3
End is connected with 3 road 4mA-20mA current signal output ends of the laser level control instrument, the output terminal of the connector J3 according to
It is secondary to be grounded after single-pole three-throw switch S and ammeter A.Pass through ammeter and three gear switching switches（Single-pole three-throw switch S）It can
Realize the independent measurement to three road 4-20mA electric currents of laser level control instrument.Technical staff can be by the show value and laser of ammeter
The show value of level control instrument is compared, to judge whether electric current output is normal.
Application method：By the signal output part of liquid level signal simulation generation module and tested laser level control
The corresponding signal input terminal connection of instrument, then by the on-off model test module and 4mA-20mA current signal test modules
Input terminal be connected with the corresponding signal output terminal of tested laser level control instrument；Respectively by the test device and laser
Level control instrument powers on；The potentiometer of the test device is adjusted, observes the situation of change of laser level control instrument level value, behaviour
Author result can judge whether the signal processing circuit of laser level control instrument is abnormal according to the observation；In level value change procedure
In, it can judge whether the double switch amount output of laser level control instrument is different according to the indicator light in on-off model test module
Often；Operator can keep off switching switches by adjusting the three of tester front panel（Single-pole three-throw switch S）, and pass through observation ammeter
Whether three road 4-20mA current signals outputs of testing laser level control instrument are abnormal respectively.
The variable liquid level signal of simulation that liquid level signal simulation generation module in the test device generates be input to by
Testing laser level control instrument, laser level control instrument output a control signal to on-off model according to the liquid level signal of input
Test module and 4mA-20mA current signal test modules are surveyed by on-off model test module and 4mA-20mA current signals
Die trial block tests the output signal of laser level control instrument, the output signal of testing laser level control instrument（Two groups are opened
Measure signal and three road 4-20mA current signals in pass）It is whether normal and indicated.By described device, can judge in first time
Where the problem of laser level control instrument, be conducive to select correct solution at the first time, improve solution plant issue
Efficiency.
Claims (5)
1. a kind of laser level control instrument test device, it is characterised in that：Mould is generated including power module, liquid level signal simulation
Block, on-off model test module and 4mA-20mA current signal test modules, the power module are used for as the test
The module powered is needed to provide working power, the signal output part and laser liquid of the liquid level signal simulation generation module in device
The level control signal input terminal connection of face controller, the liquid level signal simulation generation module generate variable liquid for simulating
Position signal；The signal input part of the on-off model test module and the on-off model of the laser level control instrument export
End connection, the on-off model test module are used to test and indicate the output shape of two groups of switching values of laser level control instrument
State；The 4mA-20mA electric currents of the signal input part of the 4mA-20mA current signals test module and the laser level control instrument
Signal output part connects, and the 4mA-20mA current signals test module is used for the three road 4- to the output of laser level control instrument
20mA electric currents carry out independent measurement.
2. laser level control instrument test device as described in claim 1, it is characterised in that：The input terminal of the power module
Alternating current 220V power supply and direct current 24V power supplys are connect, direct current 24V- direct current 5V power conversion modules are provided in the power module,
The power conversion module uses LM2575-5.0 type power conversion chips.
3. laser level control instrument test device as described in claim 1, it is characterised in that：The liquid level signal simulation generates
1 foot that module includes NE555 cake cores U1, the U1 is grounded, and power supply VCC is connected respectively with 8 feet of the U1 and 4 feet, described
4 feet of U1 are divided into three tunnels after resistance R2, and the first via is connected with 7 feet of the U1, the second tunnel through diode D1 and the U1 2
Foot connects, and the 3rd tunnel is connected through resistance R3 with 6 feet of the U1,2 feet of the U1 be connected with 6 feet after through capacitance C1 ground connection, institute
The 5 foot meridian capacitor C2 ground connection of U1 is stated, the base stage of 3 feet of the U1 with triode Q1 after resistance R4 is connected, the triode Q1
Emitter ground connection, the collector of the triode Q1 is divided into three tunnels, and the first via meets VCC, the second tunnel and resistance R6 through resistance R5
One end connection, the 3rd tunnel is connected with one end of resistance R7；
The other end of resistance R6 is divided into two-way, and the first via is connected with the in-phase input end of operational amplifier U2A, and the second tunnel is by connecing
Plug-in unit J5 is connected with a fixing end of potentiometer RT；The 11 feet ground connection of the operational amplifier U2A, 4 feet meet VCC；Computing is put
2 feet of big device U2A are connected with the output terminal of the operational amplifier U2A, and the output terminal of operational amplifier U2A is through resistance R8 and fortune
Calculate the in-phase signal input terminal connection of amplifier U2D, the inverting input of operational amplifier U2D through respectively with resistance R10 and
One end connection of resistance R12, the other end ground connection of resistance R10, the other end of resistance R12 are divided into two-way, and the first via is put with computing
The output terminal connection of big device U2D, the second tunnel are connected with one end of capacitance C3, and the other end of capacitance C3 connects with one end of resistance R14
It connects, the other end of resistance R14 simulates a signal output part of generation module for the liquid level signal；
The other end of resistance R7 is divided into two-way, and the first via is connected with the in-phase input end of operational amplifier U2B, and the second tunnel is by connecing
Plug-in unit J5 is connected with another fixing end of potentiometer RT, the movable end ground connection of potentiometer RT；The 11 of the operational amplifier U2B
Foot is grounded, and 4 feet meet VCC；2 feet of operational amplifier U2B are connected with the output terminal of the operational amplifier U2B, operational amplifier
The output terminal of U2B is connected through resistance R9 with the in-phase signal input terminal of operational amplifier U2C, and the reverse phase of operational amplifier U2C is defeated
Enter end to be connected through one end respectively with resistance R11 and resistance R13, the other end ground connection of resistance R11, the other end of resistance R13
It is divided into two-way, the first via is connected with the output terminal of operational amplifier U2C, and the second tunnel is connected with one end of capacitance C4, capacitance C4's
The other end is connected with one end of resistance R15, and the other end of resistance R15 simulates another letter of generation module for the liquid level signal
Number output terminal.
4. laser level control instrument test device as described in claim 1, it is characterised in that：The on-off model tests mould
Block includes relay K1 and relay K2, and one end of the coil of relay K1 is connected with firewire, the coil of relay K1 it is another
End is connected with a terminals of connector J2, a termination+24V power supplys of the contact of relay K1, the contact of relay K1
The other end is grounded after resistance R16 and Light-emitting diode LED 1 successively；One end of the coil of relay K2 is connected with firewire, after
The other end of the coil of electric appliance K2 is connected with another terminals of connector J2, the termination+24V electricity of the contact of relay K2
Source, the other end of the contact of relay K2 are grounded after resistance R17 and Light-emitting diode LED 2 successively.
5. laser level control instrument test device as described in claim 1, it is characterised in that：The 4mA-20mA current signals
Test module includes connector J3, the 3 road 4mA-20mA electricity of the input terminal of the connector J3 and the laser level control instrument
Signal output part connection is flowed, the output terminal of the connector J3 is grounded after single-pole three-throw switch S and ammeter A successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721650856.9U CN207424672U (en) | 2017-12-01 | 2017-12-01 | Laser level control instrument test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721650856.9U CN207424672U (en) | 2017-12-01 | 2017-12-01 | Laser level control instrument test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207424672U true CN207424672U (en) | 2018-05-29 |
Family
ID=62396952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721650856.9U Expired - Fee Related CN207424672U (en) | 2017-12-01 | 2017-12-01 | Laser level control instrument test device |
Country Status (1)
| Country | Link |
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| CN (1) | CN207424672U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113595188A (en) * | 2021-07-28 | 2021-11-02 | 中国人民解放军陆军工程大学 | Battery charging router with multiple energy modes |
-
2017
- 2017-12-01 CN CN201721650856.9U patent/CN207424672U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113595188A (en) * | 2021-07-28 | 2021-11-02 | 中国人民解放军陆军工程大学 | Battery charging router with multiple energy modes |
| CN113595188B (en) * | 2021-07-28 | 2023-06-23 | 中国人民解放军陆军工程大学 | Multi-energy mode battery charging router |
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Granted publication date: 20180529 Termination date: 20211201 |