CN212845258U - Vehicle-mounted formaldehyde detection device - Google Patents
Vehicle-mounted formaldehyde detection device Download PDFInfo
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- CN212845258U CN212845258U CN202021408772.6U CN202021408772U CN212845258U CN 212845258 U CN212845258 U CN 212845258U CN 202021408772 U CN202021408772 U CN 202021408772U CN 212845258 U CN212845258 U CN 212845258U
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Abstract
The utility model discloses a vehicle-mounted formaldehyde detection device, which comprises a shell, wherein the front surface of the shell comprises a display screen, an alarm lamp, an alarm setting key, a function switch and a zero setting knob, and the alarm lamp and the alarm setting key are respectively positioned below the display screen; the function switch is arranged below the alarm setting key, and the zero setting knob is arranged on one side of the function switch; a battery mounting groove is formed in the back of the shell; a formaldehyde detection circuit is arranged in the shell. The utility model has small size and specification, is convenient to carry, and can directly read data at any time through the number of the display screen, thereby avoiding the trouble that a professional can operate; not only the detection speed is fast, but also the accuracy is high, and the safety problem of personnel is effectively guaranteed.
Description
Technical Field
The utility model belongs to the technical field of detection device, concretely relates to on-vehicle formaldehyde detection device.
Background
Formaldehyde is a colorless and volatile pollutant with pungent smell, and has strong stimulation and damage to skin, eyes and mucous membrane cells, and inhalation of formaldehyde can cause throat discomfort or pain, cough and chest distress, can cause bronchitis or asthma attack and even pulmonary edema, and serious patients can cause pneumonia and kidney damage. Formaldehyde enters a human body through a respiratory tract, is irreversibly combined with DNA bonds in protein of the human body, has genotoxicity characteristics, increases carcinogenic probability, is listed as a carcinogenic teratogenic substance by the international cancer research organization, is also listed as the second on a priority control list of toxic chemicals in China, and belongs to high poison. The car especially new car is through insolateing and the in-process of going, can spill over a small amount of formaldehyde in the automotive interior, because the car inner space is little, the concentration of formaldehyde is great relatively, driver and passenger can unconsciously inhale excessive formaldehyde, harm healthy, consequently, need provide a vehicle-mounted formaldehyde detection device.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's situation, overcome above defect, provide an on-vehicle formaldehyde detection device.
In order to achieve the above object, the present invention is achieved by the following technical means.
A vehicle-mounted formaldehyde detection device comprises a shell, wherein the front surface of the shell comprises a display screen, an alarm lamp, an alarm setting key, a function switch and a zero setting knob, and the alarm lamp and the alarm setting key are respectively positioned below the display screen; the function switch is arranged below the alarm setting key, and the zero setting knob is arranged on one side of the function switch; a battery mounting groove is formed in the back of the shell; a formaldehyde detection circuit is arranged in the shell.
According to the above technical solution, as a further preferable technical solution of the above technical solution, the function switch includes an equipment on gear, an equipment off gear, a zero setting and measuring gear, a battery detection gear, and a sampling gas gear.
According to the above technical solution, as a further preferable technical solution of the above technical solution, the formaldehyde detection circuit includes an amplifier U1, wherein:
the 1 pin of the amplifier U1 is connected with one end of an inductor L1, the other end of the inductor L1 is connected with one end of a capacitor C2, and the other end of the capacitor C2 is connected with the 2 pin of an amplifier U1;
the 2 pin of the amplifier U1 is connected with one end of a resistor R3, the other end of the resistor R3 is connected with one end of a sliding resistor R4, and the other end of the sliding resistor R4 is connected with the 4 pin of the amplifier U1;
the 3-pin connection of the amplifier U1 is simultaneously connected with one end of a capacitor C1 and one end of a resistor R2, the common end of the capacitor C1 and the resistor R2 is connected with one end of a resistor R1, and the other end of the resistor R1 is connected with the 5-pin connection of the amplifier U1;
the 4 pin of the amplifier U1 is connected with one end of a capacitor C3, the other end of the capacitor C3 is connected with one end of a resistor R5, the other end of the resistor R5 is connected with one end of a capacitor C4, and the other end of the capacitor C4 is connected with the 5 pin of the amplifier U1;
the 5 pin of the amplifier U1 is connected with one end of a switch S1, the other end of the switch S1 is connected with the positive pole of a power supply B1, and the negative pole of the power supply B1 is connected with the 3 pin of the amplifier U1.
According to the above technical means, as a further preferable technical means of the above technical means, a battery is provided in the battery mounting groove.
According to the above technical means, as a more preferable technical means of the above technical means, the amplifier U1 is UA 741.
The utility model discloses a vehicle-mounted formaldehyde detection device, its beneficial effect lies in: the utility model has small size and specification, is convenient to carry, and can directly read data at any time through the number of the display screen, thereby avoiding the trouble that a professional can operate; not only the detection speed is fast, but also the accuracy is high, and the safety problem of personnel is effectively guaranteed.
Drawings
Fig. 1 is a schematic overall structure diagram of the preferred embodiment of the present invention;
fig. 2 is a schematic view of the overall structure of the preferred embodiment of the present invention from another angle;
fig. 3 is a schematic circuit diagram of a formaldehyde detection circuit according to a preferred embodiment of the present invention.
The reference numerals include: the device comprises a shell 10, a display screen 11, an alarm lamp 12, an alarm setting key 13, a function switch 14, a zero setting knob 15 and a battery mounting groove 16.
Detailed Description
The utility model discloses an on-vehicle formaldehyde detection device combines preferred embodiment below, and is right the utility model discloses a detailed embodiment does further description.
Referring to fig. 1 to 3 of the drawings, fig. 1 is a schematic view of the overall structure of the preferred embodiment of the present invention; fig. 2 is a schematic view of the overall structure of the preferred embodiment of the present invention from another angle; fig. 3 is a schematic circuit diagram of a formaldehyde detection circuit according to a preferred embodiment of the present invention.
A vehicle-mounted formaldehyde detection device comprises a shell 10, wherein the front surface of the shell 10 comprises a display screen 11, an alarm lamp 12, an alarm setting key 13, a function switch 14 and a zero setting knob 15, and the alarm lamp 12 and the alarm setting key 13 are respectively positioned below the display screen 11; the function switch 14 is arranged below the alarm setting key 13, and the zero setting knob 15 is arranged on one side of the function switch 14; a battery mounting groove 16 is formed in the back of the shell 10; a formaldehyde detection circuit is arranged in the shell.
Preferably, the function switches 14 include a device-on position, a device-off position, a zero and measurement position, a battery test position, and a sample gas position.
Preferably, the formaldehyde detection circuit comprises an amplifier U1, wherein:
the 1 pin of the amplifier U1 is connected with one end of an inductor L1, the other end of the inductor L1 is connected with one end of a capacitor C2, and the other end of the capacitor C2 is connected with the 2 pin of an amplifier U1;
the 2 pin of the amplifier U1 is connected with one end of a resistor R3, the other end of the resistor R3 is connected with one end of a sliding resistor R4, and the other end of the sliding resistor R4 is connected with the 4 pin of the amplifier U1;
the 3-pin connection of the amplifier U1 is simultaneously connected with one end of a capacitor C1 and one end of a resistor R2, the common end of the capacitor C1 and the resistor R2 is connected with one end of a resistor R1, and the other end of the resistor R1 is connected with the 5-pin connection of the amplifier U1;
the 4 pin of the amplifier U1 is connected with one end of a capacitor C3, the other end of the capacitor C3 is connected with one end of a resistor R5, the other end of the resistor R5 is connected with one end of a capacitor C4, and the other end of the capacitor C4 is connected with the 5 pin of the amplifier U1;
the 5 pin of the amplifier U1 is connected with one end of a switch S1, the other end of the switch S1 is connected with the positive pole of a power supply B1, and the negative pole of the power supply B1 is connected with the 3 pin of the amplifier U1.
Preferably, a battery is disposed in the battery mounting groove 16.
Preferably, the amplifier U1 is UA 741.
When using the utility model discloses the time:
1. and (3) checking the battery: before use, the condition of the rechargeable battery is checked. Rotating the function switch 14 to the battery detection position, if the battery is intact, displaying a value of 100 or higher on the display screen 11 (ignoring any decimal point when checking the battery), and when full, continuously using for 12 hours; for safety reasons it is preferable to replace the battery before the display goes below 100.
2. Alarm setting: typically, the factory sets the alarm at 50% of full scale, and the alarm can be reset by the following method.
(1) The function switch 14 is rotated to the zero setting and measuring gear, and is rotated to display the required alarm concentration value by rotating the zero setting knob 15.
(2) The alarm setting key 13 is adjusted clockwise until the alarm lamp 12 is turned on. If the alarm value is already active, the alarm setting key 13 is rotated counterclockwise until the alarm value is not active, and then rotated clockwise back to the alarm lamp 12 to just blink.
3. Sampling gas: the function switch 14 is rotated to the sampling position and the device is in the sample gas mode. And after the equipment is stabilized, the concentration value of the formaldehyde gas is displayed.
It is worth mentioning that the technical features of the present invention relating to the material of the housing and the like should be regarded as the prior art, and the specific structure, the operation principle, the control mode and the space arrangement mode of the technical features may be selected conventionally in the field, which should not be regarded as the invention point of the present invention, and the present invention does not further develop the detailed description specifically.
It will be apparent to those skilled in the art that modifications and variations can be made in the above-described embodiments, or some features of the invention may be substituted or omitted, and any modification, substitution, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (5)
1. The utility model provides an on-vehicle formaldehyde detection device, includes the casing, its characterized in that: the front surface of the shell comprises a display screen, an alarm lamp, an alarm setting key, a function switch and a zero setting knob, wherein the alarm lamp and the alarm setting key are respectively positioned below the display screen; the function switch is arranged below the alarm setting key, and the zero setting knob is arranged on one side of the function switch; a battery mounting groove is formed in the back of the shell; a formaldehyde detection circuit is arranged in the shell.
2. The vehicle-mounted formaldehyde detection device according to claim 1, characterized in that: the function switch comprises an equipment opening gear, an equipment closing gear, a zero setting and measuring gear, a battery detection gear and a sampling gas gear.
3. The vehicle-mounted formaldehyde detection device according to claim 1, characterized in that: the formaldehyde detection circuit comprises an amplifier U1, wherein:
the 1 pin of the amplifier U1 is connected with one end of an inductor L1, the other end of the inductor L1 is connected with one end of a capacitor C2, and the other end of the capacitor C2 is connected with the 2 pin of an amplifier U1;
the 2 pin of the amplifier U1 is connected with one end of a resistor R3, the other end of the resistor R3 is connected with one end of a sliding resistor R4, and the other end of the sliding resistor R4 is connected with the 4 pin of the amplifier U1;
the 3-pin connection of the amplifier U1 is simultaneously connected with one end of a capacitor C1 and one end of a resistor R2, the common end of the capacitor C1 and the resistor R2 is connected with one end of a resistor R1, and the other end of the resistor R1 is connected with the 5-pin connection of the amplifier U1;
the 4 pin of the amplifier U1 is connected with one end of a capacitor C3, the other end of the capacitor C3 is connected with one end of a resistor R5, the other end of the resistor R5 is connected with one end of a capacitor C4, and the other end of the capacitor C4 is connected with the 5 pin of the amplifier U1;
the 5 pin of the amplifier U1 is connected with one end of a switch S1, the other end of the switch S1 is connected with the positive pole of a power supply B1, and the negative pole of the power supply B1 is connected with the 3 pin of the amplifier U1.
4. The vehicle-mounted formaldehyde detection device according to claim 1, characterized in that: and a battery is arranged in the battery mounting groove.
5. The vehicle-mounted formaldehyde detection device according to claim 3, characterized in that: the amplifier U1 is of type UA 741.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021408772.6U CN212845258U (en) | 2020-07-16 | 2020-07-16 | Vehicle-mounted formaldehyde detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021408772.6U CN212845258U (en) | 2020-07-16 | 2020-07-16 | Vehicle-mounted formaldehyde detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212845258U true CN212845258U (en) | 2021-03-30 |
Family
ID=75119058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021408772.6U Active CN212845258U (en) | 2020-07-16 | 2020-07-16 | Vehicle-mounted formaldehyde detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212845258U (en) |
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2020
- 2020-07-16 CN CN202021408772.6U patent/CN212845258U/en active Active
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