CN215339907U - Automatic sensing device for test paper strip of urine analyzer - Google Patents
Automatic sensing device for test paper strip of urine analyzer Download PDFInfo
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- CN215339907U CN215339907U CN202121046923.2U CN202121046923U CN215339907U CN 215339907 U CN215339907 U CN 215339907U CN 202121046923 U CN202121046923 U CN 202121046923U CN 215339907 U CN215339907 U CN 215339907U
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- test strip
- urine analyzer
- sensing device
- infrared receiver
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Abstract
The utility model discloses an automatic sensing device for a test strip of a urine analyzer, which comprises a fixing plate connected with the urine analyzer, an infrared transmitter and an infrared receiver, wherein the infrared transmitter and the infrared receiver are positioned on the fixing plate and emit optical signals towards a test strip placing area, the infrared transmitter and the infrared receiver are both connected with a host of the urine analyzer, the infrared transmitter emits the optical signals towards the test strip placing area, an operator places the test strip in a shielding and reflecting optical signals, and the infrared receiver receives the optical signals reflected by the shielding and converts the optical signals into electric signals to be transmitted to the host of the urine analyzer. The automatic sensing device for the test strip of the urine analyzer effectively senses the placement action of the test strip, avoids the empty detection phenomenon, controls the next detection operation to automatically start, and effectively improves the detection efficiency.
Description
Technical Field
The utility model relates to an automatic induction device, in particular to an automatic induction device for a test strip of a urine analyzer.
Background
The urine test is a conventional item of modern medical clinical test and plays an important role in disease diagnosis, and the dry chemical urine analyzer is a special clinical urine test instrument matched with dry chemical test paper.
Urine analysis appearance commonly used in the existing market is semi-automatic urine analysis appearance, and semi-automatic urine analysis appearance generally needs operating personnel to soak appearance constantly and place the test paper strip, but can't sense placing of test paper strip automatically after placing the test paper strip, needs operating personnel to confirm by oneself, has follow-up inspection station not to have the test paper strip, and the empty phenomenon of examining appears, reduces detection efficiency and testing result.
Therefore, there is a need to solve the above problems.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims to provide an automatic sensing device of a test strip of a urine analyzer, which can effectively sense the placing action of the test strip and avoid empty detection.
The technical scheme is as follows: in order to achieve the purpose, the utility model discloses an automatic sensing device for a test strip of a urine analyzer, which comprises a fixing plate connected with the urine analyzer, an infrared transmitter and an infrared receiver, wherein the infrared transmitter is positioned on the fixing plate and sends out optical signals towards a test strip placing area, the infrared receiver is positioned on the fixing plate, the infrared transmitter and the infrared receiver are both connected with a host of the urine analyzer, the infrared transmitter emits optical signals towards the test strip placing area, an operator shields and reflects the optical signals when placing the test strip, and the infrared receiver receives the optical signals reflected by the shielding and converts the optical signals into electric signals to be transmitted to the host of the urine analyzer.
The urine analyzer comprises a base, a tray and an upper cover, wherein the tray is located on the base and used for placing test strips, the upper cover is located above the tray, a test strip placing area located at the head end of the tray is arranged on the base, and the fixing plate is connected with the upper cover and close to the test strip placing area.
Preferably, the infrared receiver is model number Taiwan-light IRM-56384.
Further, the infrared receiver comprises a PIN photodiode, a preamplifier, an automatic gain control circuit, a bandwidth filter, a signal and noise detection module, a demodulator, a triode and a pull-up resistor, wherein the output of the PIN photodiode is sequentially connected with the preamplifier, the automatic gain control circuit, the bandwidth filter and the demodulator, the automatic gain control circuit, the bandwidth filter and the signal and noise detection module form a closed loop circuit, and the output of the demodulator is respectively connected with the pull-up resistor, the ground and an output PIN through the triode.
Furthermore, the packaging adhesive of the infrared receiver is epoxy resin packaging adhesive.
Preferably, the infrared emitter is of the type taiwan-light IR 333C.
Furthermore, the infrared wavelength emitted by the infrared emitter is consistent with the infrared wavelength received by the infrared receiver.
Further, the strongest infrared wavelengths emitted by the infrared emitter and received by the infrared receiver are 940 nm.
Has the advantages that: compared with the prior art, the utility model has the following advantages:
(1) according to the automatic sensing device for the test strip of the urine analyzer, the infrared transmitter on the fixing plate faces the test strip placing area, when a reagent card is placed, an operator shields infrared signals transmitted by the infrared transmitter and reflects the infrared signals to the infrared receiver on the fixing plate, the infrared receiver receives the infrared signals and converts the infrared signals into electric signals to be transmitted to the host, the host can judge the state of the test strip, effectively senses the test strip placing action, avoids empty detection, controls the next detection operation to automatically start, and effectively improves detection efficiency;
(2) the automatic sensing device for the urine analyzer test strip is simple in structure, easy to operate, strong in universality and convenient to popularize.
Drawings
FIG. 1 is a schematic view of the present invention in mounted relation to a urine analyzer;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic circuit diagram of an infrared receiver according to the present invention;
fig. 4 is a schematic circuit diagram of a preamplifier according to the utility model.
Detailed Description
The technical scheme of the utility model is further explained by combining the attached drawings.
As shown in fig. 1 and 2, the automatic sensing device for a test strip of a urine analyzer comprises a fixing plate 1, an infrared emitter 2 and an infrared receiver 3, wherein the urine analyzer comprises a base 4, a tray 5, an upper cover 6 and a host, the tray 5 is positioned above the base 4, the test strips are sequentially arranged on the tray 5 from the head end of the tray to the tail end of the tray at intervals, a test strip placing area 7 positioned at the head end of the tray is arranged on the base, and the upper cover 6 is positioned above the tray 5 and shields part of the tray. The fixing plate 1 is connected with the upper cover 6, and the fixing plate 1 is close to the test strip placing area 7.
The infrared emitter 2 is arranged on the fixing plate 1, and the infrared emitter 2 is electrically connected with the host machine. The infrared emitter 2 emits infrared waves toward the test strip placement area. The model of the infrared emitter 2 is IR333C of taiwan yi light, the strongest infrared wavelength emitted by the infrared emitter 2 is 940nm, and the strongest infrared wavelength received by the infrared receiver 3 is 940 nm: the infrared wavelength emitted by the infrared emitter 2 coincides with the infrared wavelength received by the infrared receiver 3.
As shown in fig. 3 and 4, the infrared receiver 3 is disposed on the fixing plate 1, and the infrared receiver 3 is electrically connected to a main body of the urine analyzer. The infrared receiver receives the light signal reflected by the shielding and converts the light signal into an electric signal to be transmitted to a host of the urine analyzer. The infrared receiver 3 is model number Taiwan-light IRM-56384. The infrared receiver IRM-56384 is a miniature infrared remote control system receiver, and the infrared receiver IRM-56384 is an integrated circuit chip and is suitable for a miniaturized chip of an infrared control system. The packaging adhesive of the infrared receiver 3 is epoxy resin packaging adhesive, and the packaging of the epoxy resin can improve the infrared filtering performance. The infrared receiver 3 comprises a PIN photodiode 301, a preamplifier 302, an automatic gain control circuit 303, a bandwidth filter 304, a signal and noise detection module 305, a demodulator 306, a triode 307 and a pull-up resistor 308, wherein the output of the PIN photodiode 301 is connected with the preamplifier 302, the automatic gain control circuit 303, the bandwidth filter 304 and the demodulator 306 in sequence, the automatic gain control circuit 303, the bandwidth filter 304 and the signal and noise detection module 305 form a closed loop circuit, and the output of the demodulator 306 is connected with the pull-up resistor 308, the ground and an output PIN through the triode 307 respectively.
The working principle of the infrared receiver 3 is as follows: the PIN photodiode 301 receives an optical signal emitted by the infrared transmitting tube and converts the optical signal into an electrical signal, the electrical signal is microampere current, the electrical signal is input into the infrared receiver 3 and is amplified by a preamplifier to be converted into a voltage signal, the signal gain is adjusted by the automatic gain control circuit 303, bandwidth filtering is performed by a bandwidth filter, a signal and noise detection module performs signal and interference detection, the filtered voltage signal enters a demodulator to be modulated and demodulated into an output signal, the output signal is compared with a pull-up resistor, an output PIN outputs the demodulated output signal, and the demodulated output signal is input into a host, wherein the demodulated output signal can be directly decoded by a microprocessor.
When an operator places a test strip, the hand is just positioned in the position of the test strip placement area, an infrared signal sent by the infrared emitter is blocked, a 38HZ square wave signal sent by the infrared emitter is reflected to the infrared receiver, the infrared receiving tube receives the square wave signal reflected by the infrared emitter, and a demodulation output signal is obtained after processing.
When an operator places the test strip to be tested on the tray, the hand is just right in the test strip placement area and also just in the left side of the fixing plate, and the infrared light signal sent by the infrared emitter on the fixing plate is blocked. The host computer controls the infrared emitter to emit the PWM square wave with the frequency of 38HZ, when a hand holding the test strip blocks the infrared emitter, the square wave emitted by the infrared emitter is reflected to the direction of the fixing plate, the infrared receiver receives the reflected square wave signal, the infrared receiver is converted into a voltage signal through the preamplifier, automatic gain control and bandwidth filtering are carried out, then modulation and demodulation are carried out to obtain an output signal, the output signal is input to the host computer through an output pin, the host computer processes through the existing algorithm to calculate the effective pulse width, and whether the test strip is placed on the tray at present is judged through the effective pulse width threshold value. When the effective pulse width is larger than a given threshold value, the host machine is considered to place the test strip on the tray, the 1 st station is arranged on the host machine to place the test strip, and the urine analyzer conveys the test strip to the 2 nd station. As long as the test strip is arranged on any station, the host machine conveys the test strip to the next station and then to the test station for testing until the test strip is conveyed to the waste paper box.
According to the automatic sensing device for the test strip of the urine analyzer, the infrared transmitter on the fixing plate faces the test strip placing area, when the reagent card is placed, an operator shields infrared signals transmitted by the infrared transmitter and reflects the infrared signals to the infrared receiver on the fixing plate, the infrared receiver receives the infrared signals, converts the infrared signals into electric signals and transmits the electric signals to the host, the host can judge the state of the test strip, and controls the next detection operation to automatically start, so that the detection efficiency is effectively improved.
Claims (8)
1. The utility model provides a urine analysis appearance test paper strip auto-induction device which characterized in that: including fixed plate (1) that is connected with urine analysis appearance, be located on the fixed plate and place infrared transmitter (2) that the district sent light signal and be located infrared receiver (3) on the fixed plate towards the test paper strip, infrared transmitter (2) and infrared receiver (3) all are connected with urine analysis appearance's host computer, infrared transmitter (2) place district emitted light signal towards the test paper strip, shelter from and reflected light signal when the operator places the test paper strip, and infrared receiver receives and is sheltered from the light signal of reverberation to convert the host computer of signal transmission to urine analysis appearance.
2. The automatic sensing device for the test strip of the urine analyzer of claim 1, wherein: urine analysis appearance includes base (4), is located tray (5) that are used for placing the test paper strip on the base and upper cover (6) that are located the tray top, be equipped with the test paper strip that is located tray head department on the base and place district (7), fixed plate (1) is connected with upper cover (6), and is close to the test paper strip and places district (7).
3. The automatic sensing device for the test strip of the urine analyzer of claim 1, wherein: the infrared receiver (3) is of a type of IRM-56384 of Taiwan hundred million light.
4. The automatic sensing device for the test strip of the urine analyzer of claim 3, wherein: the infrared receiver (3) comprises a PIN photodiode (301), a preamplifier (302), an automatic gain control circuit (303), a bandwidth filter (304), a signal and noise detection module (305), a demodulator (306), a triode (307) and a pull-up resistor (308), wherein the output of the PIN photodiode (301) is sequentially connected with the preamplifier (302), the automatic gain control circuit (303), the bandwidth filter (304) and the demodulator (306), the automatic gain control circuit (303), the bandwidth filter (304) and the signal and noise detection module (305) form a closed-loop circuit, and the output of the demodulator (306) is respectively connected with the pull-up resistor (308), a ground and an output PIN through the triode (307).
5. The automatic sensing device for the test strip of the urine analyzer of claim 3, wherein: and the packaging adhesive of the infrared receiver (3) is epoxy resin packaging adhesive.
6. The automatic sensing device for the test strip of the urine analyzer of claim 1, wherein: the infrared emitter (2) is of the type Taiwan-light IR 333C.
7. The automatic sensing device for the test strip of the urine analyzer of claim 1, wherein: the infrared wavelength emitted by the infrared emitter (2) is consistent with the infrared wavelength received by the infrared receiver (3).
8. The automatic sensing device for the test strip of the urine analyzer of claim 7, wherein: the strongest infrared wavelengths emitted by the infrared emitter (2) and received by the infrared receiver (3) are 940 nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121046923.2U CN215339907U (en) | 2021-05-17 | 2021-05-17 | Automatic sensing device for test paper strip of urine analyzer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121046923.2U CN215339907U (en) | 2021-05-17 | 2021-05-17 | Automatic sensing device for test paper strip of urine analyzer |
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| CN215339907U true CN215339907U (en) | 2021-12-28 |
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| CN202121046923.2U Active CN215339907U (en) | 2021-05-17 | 2021-05-17 | Automatic sensing device for test paper strip of urine analyzer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114872116A (en) * | 2022-05-09 | 2022-08-09 | 广州万孚生物技术股份有限公司 | Test strip punching device and method |
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2021
- 2021-05-17 CN CN202121046923.2U patent/CN215339907U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114872116A (en) * | 2022-05-09 | 2022-08-09 | 广州万孚生物技术股份有限公司 | Test strip punching device and method |
| CN114872116B (en) * | 2022-05-09 | 2023-12-26 | 广州万孚生物技术股份有限公司 | Test paper strip punching device and method |
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