CN212083300U - Air ion detector signal amplifier calibrating device - Google Patents
Air ion detector signal amplifier calibrating device Download PDFInfo
- Publication number
- CN212083300U CN212083300U CN202020849874.5U CN202020849874U CN212083300U CN 212083300 U CN212083300 U CN 212083300U CN 202020849874 U CN202020849874 U CN 202020849874U CN 212083300 U CN212083300 U CN 212083300U
- Authority
- CN
- China
- Prior art keywords
- ion detector
- air ion
- signal amplifier
- signal
- connector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Amplifiers (AREA)
Abstract
The utility model discloses an air ion detector signal amplifier calibrating device. The device includes: the device comprises a shielding shell, a micro-current source circuit, a signal connector, a switching connector and a transmission cable; the micro-current source circuit is installed inside the shielding shell and used for providing current signals of various different sizes, the output end of the micro-current source circuit is connected with the input end of the signal connector through a transmission cable, the signal connector is installed on the shielding shell, the output end of the signal connector is detachably connected with the input end of the switching connector through the transmission cable, and the output end of the switching connector can be connected with a sensor and a signal amplifier of the air ion detector. The utility model discloses an air ion detector signal amplifier calibrating device can realize air ion detector signal amplifier's calibration under production environment and outdoor site environment, guarantees air ion detector reliability and accuracy at the measured data under the long-time in service behavior.
Description
Technical Field
The utility model relates to an environment check out test set technical field especially relates to an air ion detector signal amplifier calibrating device.
Background
Air ions are a general name of single gas molecules and light ion groups with negative charges in the air, and are also called as air negative ions or negative oxygen ions, and the concentration detection of the air ions is usually realized by adopting an air ion detector. In order to ensure the measurement accuracy of the air ion detector on the concentration of air ions, the conventional air ion detector collects negative ions in unit volume in the air through a sensor, converts the negative ions into weak current signals, and amplifies the current signals into measurable voltage signals by using a signal amplifier so as to calculate the concentration of the negative ions in the air.
Because the air ion detector is used outdoors for a long time, the signal amplifier is easy to generate null shift, and when the environmental temperature changes violently in summer and winter, the signal amplifier can generate temperature shift. Because the amplification object of the signal amplifier is a micro-current signal, the temperature drift and the zero drift can generate great influence on the processing process of the signal amplifier, and the measurement result of the measured air ion concentration is inaccurate; for this reason, after the air ion detector works for a certain time, the signal amplifier needs to be calibrated. However, since the signal amplifier is installed, at present, when the signal amplifier of the air ion detector is calibrated, the signal amplifier needs to be detached from the air ion detector, which is troublesome to operate, and other components may be damaged during the process of detaching the signal amplifier.
SUMMERY OF THE UTILITY MODEL
For the technical problem who exists among the solution above-mentioned prior art, the utility model provides an air ion detector signal amplifier calibrating device.
Therefore, the utility model discloses an air ion detector signal amplifier calibrating device, the device includes: the device comprises a shielding shell, a micro-current source circuit, a signal connector, a switching connector and a transmission cable;
little current source circuit is installed inside the shielding shell, little current source circuit is used for providing the current signal of multiple not equidimension, little current source circuit's output passes through the transmission cable is connected signal joint's input, signal joint installs on the shielding shell, signal joint's output passes through the transmission cable with switching joint's input detachably connects, switching joint's output can connect air ion detector's sensor and signal amplifier.
Further, in the calibration apparatus for a signal amplifier of an air ion detector, the micro-current source circuit includes: the device comprises a power supply module, a voltage regulating circuit and a resistance regulating circuit;
the output end of the power supply module is connected with the input end of the voltage regulating circuit, and the power supply module is used for providing a voltage signal;
the output end of the voltage regulating circuit is connected with the input end of the resistance regulating circuit, and the voltage regulating circuit is used for providing voltage signals with different sizes;
the output end of the resistance adjusting circuit is connected with the input end of the signal connector, and the working resistance of the resistance adjusting circuit is adjustable so as to input current signals with different sizes to the signal connector.
Further, in the calibration apparatus for a signal amplifier of an air ion detector, the power module includes: the device comprises a battery, a power switch, a linear voltage stabilizer and a connecting wire;
the battery is installed inside the shielding shell, the battery passes through connecting wire with the switch input is connected, switch installs on the shielding shell, the switch output passes through connecting wire with linear voltage regulator's input is connected, linear voltage regulator's output with voltage regulation circuit's input is connected.
Further, in the calibration device for the signal amplifier of the air ion detector, the battery is a dry battery or a rechargeable battery.
Further, in the calibration device for the signal amplifier of the air ion detector, the signal connector is a BNC connector.
Further, in the air ion detector signal amplifier calibration device, a BNC shield cap is detachably disposed on the signal connector.
Further, in the calibration device for the signal amplifier of the air ion detector, the shielding shell is made of metal.
Further, in the calibration device for the signal amplifier of the air ion detector, a grounding screw is arranged on the shielding shell.
Further, in the calibration apparatus for a signal amplifier of an air ion detector, the transmission cable is a shielded cable.
The utility model discloses technical scheme's main advantage as follows:
the utility model discloses an air ion detector signal amplifier calibrating device can realize air ion detector signal amplifier's calibration under production environment and outdoor site environment, realizes signal amplifier's quality transmission, guarantees air ion detector reliability and accuracy at the measured data under the long-time in service behavior.
Drawings
The accompanying drawings, which are set forth herein, serve to provide a further understanding of the embodiments of the present invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are illustrative of the invention and do not constitute a limitation on the invention. In the drawings:
fig. 1 is a schematic structural diagram of a signal amplifier calibration apparatus of an air ion detector according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a power module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a voltage regulating circuit according to an embodiment of the present invention.
Description of reference numerals:
1-shielding shell, 2-micro current source circuit, 21-power module, 211-battery, 212-power switch, 213-linear voltage stabilizer, 22-voltage regulation circuit, 23-resistance regulation circuit, 3-signal joint, 4-switching joint and 5-transmission cable.
Detailed Description
To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
The technical solution provided by the embodiments of the present invention is described in detail below with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present invention provides a calibration device for a signal amplifier of an air ion detector, the device includes: the device comprises a shielding shell 1, a micro-current source circuit 2, a signal connector 3, a switching connector 4 and a transmission cable 5; little current source circuit 2 installs inside shield shell 1, little current source circuit 2 is used for providing the current signal of multiple not equidimension, little current source circuit 2's output passes through transmission cable 5 and connects signal connector 3's input, signal connector 3 installs on shield shell 1, signal connector 3's output passes through transmission cable 5 and is connected with adapter 4's input detachably, adapter 4's output can connect air ion detector's sensor and signal amplifier.
The structure and the working principle of the calibration device for the signal amplifier of the air ion detector provided by an embodiment of the present invention are specifically described below;
the utility model provides an embodiment provides an air ion detector signal amplifier calibrating device when being used for carrying out the calibration to signal amplifier, connect the output of adapter 4 to by the standard electrometer of measurement institute calibration, utilize the standard electrometer to measure and record the size of the output little current signal of little current source circuit 2 different gears, after accomplishing the measurement record, take adapter 4 apart with standard electrometer, send this calibrating device to the use scene of air ion detector, then make this calibrating device ground connection, connect the output of adapter 4 to the input of air ion detector signal amplifier, if sensor and signal amplifier are fixed as an organic whole in the air ion detector, then connect the output of adapter 4 to the air inlet of air ion detector sensor, and fill the air inlet of full sensor in order to guarantee that the air current can't get into the sensor, and finally, calibrating the signal amplifier by utilizing the output micro-current signals of different gears of the micro-current source circuit 2.
When the signal amplifier is calibrated by using the output micro-current signals of different gears of the micro-current source circuit 2, zero position output can be selected first, after waiting for 5 minutes, recording is started for 5 minutes, and then the output micro-current signals of other gears of the micro-current source circuit 2 are selected to calibrate the signal amplifier respectively, so that the calibration parameters of the signal amplifier are obtained.
As shown in fig. 1, in an embodiment of the present invention, the micro-current source circuit 2 may include: a power supply module 21, a voltage regulation circuit 22, and a resistance regulation circuit 23; the output end of the power supply module 21 is connected with the input end of the voltage regulating circuit 22, and the power supply module 21 is used for providing a voltage signal; the output end of the voltage regulating circuit 22 is connected with the input end of the resistance regulating circuit 23, and the voltage regulating circuit 22 is used for providing voltage signals with different sizes; the output end of the resistance adjusting circuit 23 is connected with the input end of the signal connector 3, and the working resistance of the resistance adjusting circuit 23 is adjustable so as to input current signals with different magnitudes to the signal connector 3.
By means of the arrangement, micro-current signals with different sizes can be obtained by adjusting the voltage adjusting circuit 22 and the resistance adjusting circuit 23, so that the calibration of the signal amplifier is achieved.
Optionally, as shown in fig. 2, in an embodiment of the present invention, the power module 21 may include: a battery 211, a power switch 212, a linear regulator 213, and a connection wire; the battery 211 is installed inside the shielding shell 1, the battery 211 is connected with the input end of the power switch 212 through a connecting wire, the power switch 212 is installed on the shielding shell 1, the output end of the power switch 212 is connected with the input end of the linear voltage regulator 213 through a connecting wire, and the output end of the linear voltage regulator 213 is connected with the input end of the voltage regulating circuit 22.
The battery 211 may be a dry battery or a rechargeable battery to ensure no ripple noise in the generated micro-current signal, and the power switch 212 may be in a closed state when not in use to prevent the battery 211 from leaking electricity.
As shown in fig. 3, in an embodiment of the present invention, the voltage regulating circuit 22 may include a band switch and a resistor network, one end of the band switch is connected to the output terminal of the power module 21 and the input terminal of the resistor regulating circuit 23, the other end of the band switch can be connected to any one of a plurality of resistor branches of the resistor network, and the resistor network may be formed by a plurality of resistors with different resistances in series and parallel connection. With this arrangement, the output voltage of the voltage regulating circuit 22 can be regulated by regulating the connection relationship between the band switch and the resistor network.
Further, in an embodiment of the present invention, the resistance adjusting circuit 23 may be formed by a plurality of resistors with different resistances in a manner of being connected in series and in parallel to cooperate with each other. With this arrangement, the adjustment of the output microcurrent signal of the resistance adjusting circuit 23 can be realized by adjusting the operating resistance of the resistance adjusting circuit 23.
The resistor in the resistance adjusting circuit 23 may be a 1% vacuum resistor or a 1% precision winding resistor, and a shielding ring may be disposed on the surface of the resistor to prevent the surface of the resistor from creeping.
Optionally, in an embodiment of the present invention, the signal connector 3 is a BNC connector, for example, a double-coaxial BNC connector or a triple-coaxial BNC connector; when the double coaxial BNC connector is adopted, the outermost layer is a signal ground, and the middle layer is a micro-current signal; when the triaxial BNC connector is adopted, the outermost layer is a shielding layer, the outermost layer is grounded after being connected with the shielding shell 1, the innermost layer is a micro-current signal, and the middle layer is a signal ground. When the signal amplifier has a BNC connector, the adapter connector 4 can be removed, and the signal connector 3 is directly connected to the signal amplifier for calibration of the signal amplifier.
Suitably, when the signal connector 3 is a BNC connector, the input of the adapter connector 4 is provided with a BNC connector that mates with the signal connector 3.
Further, in an embodiment of the present invention, when the signal connector 3 is a BNC connector, a BNC shielding cap is detachably disposed on the signal connector 3. As such, the signal connector 3 may be shielded using a BNC shielding cap when the signal connector 3 is not in use.
Optionally, in an embodiment of the present invention, the shielding shell 1 may be made of metal, for example, aluminum alloy, and the shielding shell 1 may have an integral sealing structure; so set up, can prevent external electromagnetic interference and air current interference.
Further, a grounding screw may be disposed on the shielding shell 1; with this arrangement, grounding of the shield case 1 can be facilitated.
Further, in an embodiment of the present invention, the transmission cable 5 may be a shielded cable; when the signal connector 3 adopts a dual coaxial BNC connector, the transmission cable 5 may be a double-layer shielded cable; when the signal connector 3 adopts a triaxial BNC connector, the transmission cable 5 may be a triple-shielded cable.
It is visible, the utility model relates to an embodiment provides an air ion detector signal amplifier calibrating device can realize air ion detector signal amplifier's calibration under production environment and outdoor site environment, realizes signal amplifier's mass transfer, guarantees air ion detector reliability and accuracy at the measured data under the long-time in service behavior.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, "front", "rear", "left", "right", "upper" and "lower" in this document are referred to the placement states shown in the drawings.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (9)
1. An air ion detector signal amplifier calibration apparatus, the apparatus comprising: the device comprises a shielding shell, a micro-current source circuit, a signal connector, a switching connector and a transmission cable;
little current source circuit is installed inside the shielding shell, little current source circuit is used for providing the current signal of multiple not equidimension, little current source circuit's output passes through the transmission cable is connected signal joint's input, signal joint installs on the shielding shell, signal joint's output passes through the transmission cable with switching joint's input detachably connects, switching joint's output can connect air ion detector's sensor and signal amplifier.
2. The air ion detector signal amplifier calibration arrangement of claim 1, wherein the micro-current source circuit comprises: the device comprises a power supply module, a voltage regulating circuit and a resistance regulating circuit;
the output end of the power supply module is connected with the input end of the voltage regulating circuit, and the power supply module is used for providing a voltage signal;
the output end of the voltage regulating circuit is connected with the input end of the resistance regulating circuit, and the voltage regulating circuit is used for providing voltage signals with different sizes;
the output end of the resistance adjusting circuit is connected with the input end of the signal connector, and the working resistance of the resistance adjusting circuit is adjustable so as to input current signals with different sizes to the signal connector.
3. The air ion detector signal amplifier calibration arrangement of claim 2, wherein the power module comprises: the device comprises a battery, a power switch, a linear voltage stabilizer and a connecting wire;
the battery is installed inside the shielding shell, the battery passes through connecting wire with the switch input is connected, switch installs on the shielding shell, the switch output passes through connecting wire with linear voltage regulator's input is connected, linear voltage regulator's output with voltage regulation circuit's input is connected.
4. The air ion detector signal amplifier calibration device of claim 3, wherein the battery is a dry cell battery or a rechargeable battery.
5. The air ion detector signal amplifier calibration device of any one of claims 1-4, wherein the signal connector is a BNC connector.
6. The air ion detector signal amplifier calibration device of claim 5, wherein a BNC shielding cap is removably disposed on the signal connector.
7. The air ion detector signal amplifier calibration device of claim 1, wherein the shielding housing is made of metal.
8. The air ion detector signal amplifier calibration device of claim 1 or 7, wherein a grounding screw is disposed on the shielding housing.
9. The air ion detector signal amplifier calibration device of claim 1, wherein the transmission cable is a shielded cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020849874.5U CN212083300U (en) | 2020-05-20 | 2020-05-20 | Air ion detector signal amplifier calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020849874.5U CN212083300U (en) | 2020-05-20 | 2020-05-20 | Air ion detector signal amplifier calibrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212083300U true CN212083300U (en) | 2020-12-04 |
Family
ID=73568719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020849874.5U Active CN212083300U (en) | 2020-05-20 | 2020-05-20 | Air ion detector signal amplifier calibrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212083300U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458378A (en) * | 2020-05-20 | 2020-07-28 | 北京圣通和科技有限公司 | Air ion detector signal amplifier calibration device and calibration method |
-
2020
- 2020-05-20 CN CN202020849874.5U patent/CN212083300U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458378A (en) * | 2020-05-20 | 2020-07-28 | 北京圣通和科技有限公司 | Air ion detector signal amplifier calibration device and calibration method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212083300U (en) | Air ion detector signal amplifier calibrating device | |
| CN111077487A (en) | Portable nuclear instrument system signal detection and fault positioning device | |
| CN102478438A (en) | Thermal resistance analog calibration system for signal simulation system | |
| CN205353219U (en) | Overcome fixed electromagnetic field detection device of ambient temperature | |
| CN114296120A (en) | Special test circuit and method for cadmium zinc telluride detector | |
| SE426525B (en) | SET ON MONITORING OF A NEUTRON DETECTOR AND NEUTRON DETECTOR MONITOR FOR IMPLEMENTATION OF THE SET | |
| CN103675651A (en) | Test system of long-term stability of input offset voltage of operational amplifier | |
| CN203965572U (en) | Based on the system of flexible piezoelectric membraneous material monitoring GIS partial discharge position | |
| CN102062848A (en) | Calibrating device of output voltage of insulating oil dielectric strength tester | |
| CN111458378A (en) | Air ion detector signal amplifier calibration device and calibration method | |
| CN102478422A (en) | Zero drift simulation calibrating method and device thereof | |
| CN207020320U (en) | A kind of gain correcting device of scintillation detector | |
| CN102411095A (en) | Active static electric field probe | |
| CN202485796U (en) | Optical radiation measuring detector | |
| CN111413726B (en) | Radon measuring instrument and calibration method thereof | |
| CN107290649A (en) | Television board card testing device | |
| CN212110349U (en) | Wireless charging temperature measuring instrument | |
| CN208984739U (en) | A kind of E-field telemetry system based on capacitor amendment principle | |
| CN112345810A (en) | Current measuring device based on Hall sensor and measuring method thereof | |
| CN220490230U (en) | Thermal noise testing device of thermopile infrared sensor | |
| CN111323350A (en) | High-precision particle detection sensor based on light scattering method and detection method thereof | |
| CN109387764A (en) | A kind of highly sensitive high jamproof photodiode detector | |
| CN104062564A (en) | System for monitoring GIS partial discharge position based on flexible piezoelectric thin-film material | |
| CN201449451U (en) | Protective-graded portable dosimeter for sanitary and disease control | |
| JP4148358B2 (en) | Voltage sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210310 Address after: 101500 room 313-3493, 3 / F, Shanshui building, 3 Gulou East Street, Miyun District, Beijing Patentee after: Beijing huance Technology Co.,Ltd. Address before: 100744 room 313-1395, 3 / F, Shanshui building, 3 Gulou East Street, Miyun District, Beijing Patentee before: BEIJING SHENGTONGHE TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220309 Address after: 101599 room 313-1395, floor 3, Shanshui building, No. 3 Gulou East Street, Miyun District, Beijing (centralized office area of yunchuang Valley Economic Development Center) Patentee after: BEIJING SHENGTONGHE TECHNOLOGY Co.,Ltd. Address before: 101500 room 313-3493, 3 / F, Shanshui building, 3 Gulou East Street, Miyun District, Beijing Patentee before: Beijing huance Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right |