CN206002220U - There is the temperature transmitter of DTU broken string alarm - Google Patents
There is the temperature transmitter of DTU broken string alarm Download PDFInfo
- Publication number
- CN206002220U CN206002220U CN201620879504.XU CN201620879504U CN206002220U CN 206002220 U CN206002220 U CN 206002220U CN 201620879504 U CN201620879504 U CN 201620879504U CN 206002220 U CN206002220 U CN 206002220U
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- China
- Prior art keywords
- audion
- diode
- resistor
- alarm
- dtu
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Abstract
The utility model discloses a kind of temperature transmitter with DTU broken string alarm，Including temperature sensor、Signal processing circuit、Controller、Power circuit、Power failure warning circuit，Power failure warning circuit includes the first audion、Second audion、Diode，The anode of diode passes sequentially through first resistor、3rd resistor is connected with the base stage of the first audion，The emitter stage of the first audion is connected with the negative pole of accumulator battery，The colelctor electrode of the first audion is connected with the negative electrode of diode and the base stage of the second audion by the 4th resistance simultaneously，It is connected with second resistance between the common port of first resistor and 3rd resistor and the negative electrode of diode，It is connected with the 5th resistance between the colelctor electrode of the base stage of the first audion and the second audion，It is connected with alarm between the colelctor electrode of the second audion and the negative pole of accumulator battery，The emitter stage of the positive pole of accumulator battery and the second audion is both connected on the negative electrode of diode，It provides operator when breaking power-off.
Description
Technical field
This utility model is related to temperature transmitter field, in particular it relates to a kind of temperature pick-up with DTU broken string alarm
Device.
Background technology
Temperature transmitter is a kind of conventional temperature testing equipment, and its function is the temperature signal recording temperature sensor
It is converted into the signal of telecommunication and be shown on display module.In some application scenarios, it need to detect to temperature always, if transmitter
Broken string power-off, in the case that operator do not know, then loses temperature-monitoring function so that temperature monitoring cannot be tieed up for a long time
Shield.Existing temperature transmitter its do not have broken string alarm for power-off function, do not meet the use that need to always temperature be monitored
Demand.
Utility model content
This utility model provides a kind of temperature transmitter with DTU broken string alarm to solve above-mentioned technical problem, its
There is power fail warning function, provide operator to be safeguarded when breaking power-off.
The technical scheme in the invention for solving the above technical problem is：
There is the temperature transmitter of DTU broken string alarm, including the temperature sensor being sequentially connected, signal processing circuit and control
Device processed, also includes providing the power circuit of electric energy for controller, is connected with power fail warning between described controller and power circuit
Circuit, described power failure warning circuit includes diode, the first audion and second being just connected between controller and power circuit
Audion, the anode of described diode passes sequentially through first resistor, 3rd resistor is connected with the base stage of the first audion, and described
The emitter stage of one audion is connected with the negative pole of accumulator battery, the colelctor electrode of described first audion pass through the 4th resistance simultaneously with
The base stage of the negative electrode of diode and the second audion is connected, the common port of described first resistor and 3rd resistor and the moon of diode
It is connected with second resistance between pole, between the base stage of described first audion and the colelctor electrode of the second audion, be connected with the 5th electricity
Resistance, is connected with alarm, the positive pole of described accumulator battery between the colelctor electrode of described second audion and the negative pole of accumulator battery
It is both connected on the negative electrode of diode with the emitter stage of the second audion.Scheme of the present utility model is in controller and power circuit
Between connect power failure warning circuit, be monitored with the broken string situation to temperature transmitter.Diode is just being connected on controller and electricity
Between source circuit, i.e. the anode of diode is connected to the outfan of power circuit, negative electrode connects on the controller；It is to power supply electricity
On/off between road and controller plays monitoring effect, and its small power consumption.During controller normal work, the second audion not work
Make, after power circuit loses power supply function, controller breaks, the pressure drop in second resistance disappears, on a left side for accumulator battery
Bottom right, the second triode ON, alarm obtains electric work.
Preferably, the Standard resistance range of described first resistor is 3 megohms to 5 megohms.
Preferably, described alarm is buzzer.
Preferably, described alarm is light emitting diode.
Preferably, described first audion is NPN type triode, the PNP triode of described second audion.
To sum up, the beneficial effects of the utility model are：
This utility model is connecting power failure warning circuit between controller and power circuit, to break to temperature transmitter
Wire condition is monitored, and after power circuit loses power supply function, controller breaks, and the pressure drop in second resistance disappears,
Under the left and right of accumulator battery, the second triode ON, alarm obtains electric work, to remind operator's temperature transmitter to break,
In order to timely process accident.
Brief description
Fig. 1 is the circuit diagram of power failure warning circuit of the present utility model.
Specific embodiment
With reference to embodiment and accompanying drawing, the technical scheme in this utility model embodiment is clearly and completely retouched
State it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on this reality
With the embodiment in new, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of this utility model protection.
Embodiment 1：
A kind of temperature transmitter with DTU broken string alarm as shown in Figure 1, including the temperature sensor being sequentially connected,
Signal processing circuit and controller, also include providing the power circuit of electric energy for controller, described controller and power circuit it
Between be connected with power failure warning circuit, diode that described power failure warning circuit includes just being connected between controller and power circuit,
First audion and the second audion, the anode of described diode passes sequentially through first resistor, 3rd resistor and the first audion
Base stage be connected, the described emitter stage of the first audion is connected with the negative pole of accumulator battery, the colelctor electrode of described first audion
It is connected with the negative electrode of diode and the base stage of the second audion by the 4th resistance simultaneously, described first resistor and 3rd resistor
It is connected with second resistance, the base stage of described first audion and the current collection of the second audion between common port and the negative electrode of diode
It is connected with the 5th resistance between pole, between the colelctor electrode of described second audion and the negative pole of accumulator battery, be connected with alarm,
The emitter stage of the positive pole of described accumulator battery and the second audion is both connected on the negative electrode of diode.
Embodiment 2：
A kind of temperature transmitter with DTU broken string alarm as shown in Figure 1, the present embodiment is on the basis of above-described embodiment
On optimize, that is, the Standard resistance range of described first resistor be 3 megohms to 5 megohms.
Described alarm is buzzer.
Described alarm is light emitting diode.
Described first audion is NPN type triode, the PNP triode of described second audion.
Specifically, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance can be respectively adopted 4 megohms,
20 kilohms, 20 kilohms, 5 kilohms, 1 kilohm.
As described above, this utility model can preferably be realized.
Claims (5)
1. there is the temperature transmitter of DTU broken string alarm, including the temperature sensor being sequentially connected, signal processing circuit and control
Device, also include for controller provide electric energy power circuit it is characterised in that：It is connected between described controller and power circuit
Power failure warning circuit, described power failure warning circuit includes the first audion, the second audion, is just being connected on controller and power circuit
Between diode, the anode of described diode passes sequentially through first resistor, 3rd resistor is connected with the base stage of the first audion,
The described emitter stage of the first audion is connected with the negative pole of accumulator battery, and the colelctor electrode of described first audion passes through the 4th resistance
It is connected with the negative electrode of diode and the base stage of the second audion simultaneously, the common port of described first resistor and 3rd resistor and two poles
It is connected with second resistance between the negative electrode of pipe, be connected between the base stage of described first audion and the colelctor electrode of the second audion
5th resistance, is connected with alarm between the colelctor electrode of described second audion and the negative pole of accumulator battery, described accumulator battery
Positive pole and the emitter stage of the second audion be both connected on the negative electrode of diode.
2. according to claim 1 have DTU broken string alarm temperature transmitter it is characterised in that：Described first resistor
Standard resistance range be 3 megohms to 5 megohms.
3. according to claim 1 have DTU broken string alarm temperature transmitter it is characterised in that：Described alarm is
Buzzer.
4. according to claim 1 have DTU broken string alarm temperature transmitter it is characterised in that：Described alarm is
Light emitting diode.
5. according to claim 1 have DTU broken string alarm temperature transmitter it is characterised in that：Described one or three pole
Manage as NPN type triode, the PNP triode of described second audion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620879504.XU CN206002220U (en) | 2016-08-15 | 2016-08-15 | There is the temperature transmitter of DTU broken string alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620879504.XU CN206002220U (en) | 2016-08-15 | 2016-08-15 | There is the temperature transmitter of DTU broken string alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206002220U true CN206002220U (en) | 2017-03-08 |
Family
ID=58199727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620879504.XU Expired - Fee Related CN206002220U (en) | 2016-08-15 | 2016-08-15 | There is the temperature transmitter of DTU broken string alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206002220U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109244572A (en) * | 2018-11-09 | 2019-01-18 | 国网安徽省电力有限公司宿州供电公司 | Battery pack open circuit afterflow and alarm device |
-
2016
- 2016-08-15 CN CN201620879504.XU patent/CN206002220U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109244572A (en) * | 2018-11-09 | 2019-01-18 | 国网安徽省电力有限公司宿州供电公司 | Battery pack open circuit afterflow and alarm device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170308 Termination date: 20170815 |