CN110513601A - A kind of tap water pipe network pressure flow monitoring terminal - Google Patents
A kind of tap water pipe network pressure flow monitoring terminal Download PDFInfo
- Publication number
- CN110513601A CN110513601A CN201910726151.8A CN201910726151A CN110513601A CN 110513601 A CN110513601 A CN 110513601A CN 201910726151 A CN201910726151 A CN 201910726151A CN 110513601 A CN110513601 A CN 110513601A
- Authority
- CN
- China
- Prior art keywords
- pipe network
- electric wire
- protective housing
- power supply
- switching power
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/18—Arrangements for supervising or controlling working operations for measuring the quantity of conveyed product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
Abstract
The present invention provides a kind of tap water pipe network pressure flows to monitor terminal, comprising: flowmeter, pressure transmitter, temperature sensor, gas sensor；Flowmeter is provided in the middle part of pipeline, and pipeline is connected with flowmeter by flange；The middle part of pipeline is arranged in pressure transmitter, and pressure transmitter is concatenated with pipeline；The inside of protective housing is arranged in micro energy lose detection and control terminal, and micro energy lose detection and control terminal is bolted with protective housing and is connected；The bottom of protective housing is arranged in temperature sensor, and temperature sensor is connected with data acquisition transponder by electric wire；The bottom of protective housing is arranged in gas sensor, and gas sensor is connected with data acquisition transponder by electric wire；By the improvement for monitoring terminal to existing tap water pipe network pressure flow; the device has the advantages that can to monitor pipe network ambient conditions, effectively eliminates potential security risk, protection personal safety and pipe network facilities, thus the problem of effective solution existing apparatus and deficiency.
Description
Technical field
The present invention relates to tap water pipe networks to monitor field of terminal technology, more specifically, more particularly to a kind of have can
Real-time monitoring tubular net ambient conditions, oneself for effectively eliminating potential security risk, protection personal safety and pipe network facilities function
Water ductwork pressure flow monitoring terminal.
Background technique
In tap water pipe network system, for the normal operation for guaranteeing tap water pipe network, several places are usually provided with for supervising
The devices such as the device of test tube net, such as pressure transmitter, flowmeter, water monitor, wherein pressure transmitter and flowmeter are
Widely used monitoring device.
In existing tap water pipe network monitoring terminal, most of monitoring point is usually provided only with pressure transmitter and flow
Meter does not have the function of monitoring ambient enviroment, especially on the ground such as pressurizing point and control station, shortage must for monitoring pipe network
The equipment protection measure wanted, there are potential security risks.
In view of this, study improvement for existing problem, provide one kind with can real-time monitoring tubular net week enclose
Environmental aspect, the tap water pipe network pressure flow for effectively eliminating potential security risk, protection personal safety and pipe network facilities function
Monitor terminal, it is intended to by the technology, achieve the purpose that solve the problems, such as and improve practical value.
Summary of the invention
The purpose of the present invention is to provide a kind of tap water pipe network pressure flows to monitor terminal, to solve above-mentioned background technique
Middle proposition monitors in terminal in existing tap water pipe network, and most of monitoring point is usually provided only with pressure transmitter and flow
Meter does not have the function of monitoring ambient enviroment, especially on the ground such as pressurizing point and control station, shortage must for monitoring pipe network
, there is potential security risk and deficiency in the equipment protection measure wanted.
To achieve the above object, the present invention provides a kind of tap water pipe network pressure flows to monitor terminal, by detail below
Technological means is reached:
A kind of tap water pipe network pressure flow monitoring terminal, comprising: pipeline, flowmeter, pressure transmitter, waterproof wiring
Box, protective housing, micro energy lose detection and control terminal, first antenna, Switching Power Supply, air switch, battery, data acquire transponder, temperature
Spend sensor, gas sensor, the second antenna；Flowmeter is provided in the middle part of the pipeline, and pipeline and flowmeter pass through method
Orchid is connected；The middle part of pipeline is arranged in the pressure transmitter, and pressure transmitter is concatenated with pipeline；The waterproof junction box
The side of pressure transmitter is set, and waterproof junction box is connected with pressure transmitter by electric wire；The protective housing setting
In the side of waterproof junction box；The micro energy lose detection and control terminal is arranged in the inside of protective housing, and micro energy lose detection and control terminal and anti-
Protecting box, which is bolted, to be connected；The upside of protective housing, and first antenna and micro energy lose observing and controlling is arranged in the first antenna
Terminal is connected by electric wire；The side of micro energy lose detection and control terminal, and Switching Power Supply and micro energy lose is arranged in the Switching Power Supply
Detection and control terminal is connected by electric wire；The side of Switching Power Supply, and air switch and Switching Power Supply is arranged in the air switch
It is connected by electric wire；The side of Switching Power Supply is arranged in the battery, and battery is connected with Switching Power Supply by electric wire
It connects；The side of Switching Power Supply is arranged in the data acquisition transponder, and data acquisition transponder and Switching Power Supply pass through electric wire
It is connected；The bottom of protective housing is arranged in the temperature sensor, and temperature sensor and data acquisition transponder pass through electric wire
It is connected；The bottom of protective housing is arranged in the gas sensor, and gas sensor and data acquisition transponder pass through electric wire
It is connected；The upside of protective housing is arranged in second antenna, and the second antenna is connected with data acquisition transponder by electric wire
It connects.
As advanced optimizing for the technical program, number described in a kind of tap water pipe network pressure flow monitoring terminal of the present invention
Analog-digital converter, single-chip microcontroller, memory and wireless data transfer module are internally provided with according to acquisition transponder.
As advanced optimizing for the technical program, temperature described in a kind of tap water pipe network pressure flow monitoring terminal of the present invention
Spend the model DS18B20 temperature sensor of sensor.
As advanced optimizing for the technical program, gas described in a kind of tap water pipe network pressure flow monitoring terminal of the present invention
The model MQ2 gas sensor of body sensor.
As advanced optimizing for the technical program, number described in a kind of tap water pipe network pressure flow monitoring terminal of the present invention
According to single-chip microcontroller model PICl8F4620 single-chip microcontroller inside acquisition transponder.
Due to the application of the above technical scheme, compared with the prior art, the invention has the following advantages:
1, a kind of tap water pipe network pressure flow monitoring terminal of the present invention passes through in traditional tap water pipe network pressure flow
It is provided with temperature sensor, gas sensor in monitoring terminal and there is analog-digital converter, single-chip microcontroller, memory, wireless
The data of data transmission module acquire transponder, can be supervised in real time to the temperature and gas for monitoring terminal surrounding environment
Control, prevent installation monitoring terminal missile silo or pressurizing point, control station because caused by the accidents such as toxic gas or fire life injure
And equipment property loss, security risk can be effectively sterilized, ensures personal safety as well as the property safety.
2, for the present invention by the improvement to existing tap water pipe network pressure flow monitoring terminal, having being capable of real-time monitoring tubular
Net ambient conditions effectively eliminate the advantages of potential security risk, protection personal safety and pipe network facilities, to effectively solve
The problem of present invention that determined proposes in background technique one and deficiency.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is functional framework structural schematic diagram of the invention.
In figure: pipeline 1, flowmeter 2, pressure transmitter 3, waterproof junction box 4, protective housing 5, micro energy lose detection and control terminal 6,
One antenna 7, Switching Power Supply 8, air switch 9, battery 10, data acquire transponder 11, temperature sensor 12, gas sensor
13, the second antenna 14.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
It should be noted that in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or two with
On；The orientation of the instructions such as term " on ", "lower", "left", "right", "inner", "outside", " front end ", " rear end ", " head ", " tail portion "
Or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, and
It is not that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore
It is not considered as limiting the invention.
In addition, term " first ", " second ", " third " etc. are used for description purposes only, it is not understood to indicate or imply
Relative importance.
Meanwhile in the description of the present invention unless specifically defined or limited otherwise, term " connected ", " connection " should be done
It broadly understood, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be mechanical connection,
It is also possible to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.For the common skill of this field
For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Referring to Figure 1 to Fig. 2, the particular technique that the present invention provides a kind of tap water pipe network pressure flow monitoring terminal is implemented
Scheme:
A kind of tap water pipe network pressure flow monitoring terminal, comprising: pipeline 1, flowmeter 2, pressure transmitter 3, waterproof connect
Wire box 4, protective housing 5, micro energy lose detection and control terminal 6, first antenna 7, Switching Power Supply 8, air switch 9, battery 10, data acquisition
Transponder 11, temperature sensor 12, gas sensor 13, the second antenna 14；The middle part of pipeline 1 is provided with flowmeter 2, and pipeline
1 is connected with flowmeter 2 by flange；The middle part of pipeline 1 is arranged in pressure transmitter 3, and pressure transmitter 3 and pipeline 1 are gone here and there
It connects；The side of pressure transmitter 3 is arranged in waterproof junction box 4, and waterproof junction box 4 is connected with pressure transmitter 3 by electric wire
It connects；The side of waterproof junction box 4 is arranged in protective housing 5；The inside of protective housing 5, and micro energy lose is arranged in micro energy lose detection and control terminal 6
Detection and control terminal 6 is bolted with protective housing 5 to be connected；The upside of protective housing 5, and first antenna 7 is arranged in first antenna 7
It is connected with micro energy lose detection and control terminal 6 by electric wire；The side of micro energy lose detection and control terminal 6 is arranged in Switching Power Supply 8, and switchs electricity
Source 8 is connected with micro energy lose detection and control terminal 6 by electric wire；The side of Switching Power Supply 8, and air switch 9 is arranged in air switch 9
It is connected with Switching Power Supply 8 by electric wire；The side of Switching Power Supply 8, and battery 10 and Switching Power Supply 8 is arranged in battery 10
It is connected by electric wire；The side of Switching Power Supply 8, and data acquisition transponder 11 and switch is arranged in data acquisition transponder 11
Power supply 8 is connected by electric wire；The bottom of protective housing 5 is arranged in temperature sensor 12, and temperature sensor 12 and data acquire
Transponder 11 is connected by electric wire；The bottom of protective housing 5 is arranged in gas sensor 13, and gas sensor 13 is adopted with data
Collection transponder 11 is connected by electric wire；The upside of protective housing 5 is arranged in second antenna 14, and the second antenna 14 is acquired with data
Transponder 11 is connected by electric wire.
Specifically, data acquisition transponder 11 is internally provided with analog-digital converter, single-chip microcontroller, memory and wireless data
Transmission module is used for temperature sensor 12 and the data collected of gas sensor 13, and is forwarded.
Specifically, the model DS18B20 temperature sensor of temperature sensor 12, for monitoring terminal surrounding environment
Temperature is monitored.
Specifically, the model MQ2 gas sensor of gas sensor 13, for the gas to monitoring terminal surrounding environment
It is monitored.
Specifically, data acquire 11 inside single-chip microcontroller model PICl8F4620 single-chip microcontroller of transponder, it to be used for treatment temperature
The data that sensor 12 and gas sensor 13 acquire.
Specific implementation step:
Air switch 9 is accessed into power supply, and is powered by Switching Power Supply 8 to the device, battery 10 stores electricity
The normal operation that the device is maintained when for having a power failure monitors the pressure of running water pipe pipeline 1 by flowmeter 2 and pressure transmitter 3
Power, and monitoring center is transferred data to by micro energy lose detection and control terminal 6, while temperature sensor 12 and gas sensor 13 are right
The temperature and gas for monitoring terminal surrounding environment are monitored, and monitoring signals are through the analog-digital converter in data acquisition transponder 11
It is converted into digital signal, and is handled by single-chip microcontroller, treated by single-chip microcontroller by wireless data transfer module later
Data are transmitted to monitoring center, and staff is enabled to understand the environmental factor around monitor terminal in real time, eliminate potential
Security risk, first antenna 7 and the second antenna 14 are used to enhance the signal of micro energy lose detection and control terminal 6 and data acquisition transponder 11
Intensity.
In summary: a kind of tap water pipe network pressure flow monitoring terminal, by traditional tap water pipe network pressure
Temperature sensor, gas sensor are provided in flow monitoring terminal and have analog-digital converter, single-chip microcontroller, memory,
The data of wireless data transfer module acquire transponder, can carry out to the temperature and gas for monitoring terminal surrounding environment real-time
Monitoring, prevent installation monitoring terminal missile silo or pressurizing point, control station because caused by the accidents such as toxic gas or fire life hurt
Harmful and equipment property loss can effectively sterilize security risk, ensure personal safety as well as the property safety, solve in existing tap water
In pipe network monitoring terminal, most of monitoring point is usually provided only with pressure transmitter and flowmeter for monitoring pipe network, does not have
The function of having monitoring ambient enviroment lacks necessary equipment protection measure, exists especially on the ground such as pressurizing point and control station
Potential the problem of asking of security risk.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of tap water pipe network pressure flow monitors terminal, it is characterised in that: the device has being capable of real-time monitoring tubular net week
It encloses environmental aspect, effectively eliminate the advantages of potential security risk, protection personal safety and pipe network facilities；It include: pipeline (1), stream
Meter (2), pressure transmitter (3), waterproof junction box (4), protective housing (5), micro energy lose detection and control terminal (6), first antenna (7),
Switching Power Supply (8), air switch (9), battery (10), data acquire transponder (11), temperature sensor (12), gas sensing
Device (13), the second antenna (14)；It is provided with flowmeter (2) in the middle part of the pipeline (1), and pipeline (1) passes through with flowmeter (2)
Flange is connected；The pressure transmitter (3) is arranged at the middle part of pipeline (1), and pressure transmitter (3) is concatenated with pipeline (1)；
The waterproof junction box (4) is arranged in the side of pressure transmitter (3), and waterproof junction box (4) passes through with pressure transmitter (3)
Electric wire is connected；Side of protective housing (5) setting in waterproof junction box (4)；Micro energy lose detection and control terminal (6) setting exists
The inside of protective housing (5), and micro energy lose detection and control terminal (6) is bolted with protective housing (5) and is connected；The first antenna
(7) it is arranged in the upside of protective housing (5), and first antenna (7) is connected with micro energy lose detection and control terminal (6) by electric wire；It is described
Switching Power Supply (8) is arranged in the side of micro energy lose detection and control terminal (6), and Switching Power Supply (8) passes through with micro energy lose detection and control terminal (6)
Electric wire is connected；The air switch (9) is arranged in the side of Switching Power Supply (8), and air switch (9) and Switching Power Supply (8)
It is connected by electric wire；The battery (10) is arranged in the side of Switching Power Supply (8), and battery (10) and Switching Power Supply
(8) it is connected by electric wire；Data acquisition transponder (11) setting is in the side of Switching Power Supply (8), and data acquisition turns
Hair device (11) is connected with Switching Power Supply (8) by electric wire；The temperature sensor (12) is arranged in the bottom of protective housing (5),
And temperature sensor (12) is connected with data acquisition transponder (11) by electric wire；Gas sensor (13) setting is anti-
The bottom of protecting box (5), and gas sensor (13) is connected with data acquisition transponder (11) by electric wire；Second antenna
(14) setting is in the upside of protective housing (5), and the second antenna (14) is connected with data acquisition transponder (11) by electric wire.
2. a kind of tap water pipe network pressure flow according to claim 1 monitors terminal, it is characterised in that: the data are adopted
Collection transponder (11) is internally provided with analog-digital converter, single-chip microcontroller, memory and wireless data transfer module.
3. a kind of tap water pipe network pressure flow according to claim 1 monitors terminal, it is characterised in that: the temperature passes
The model DS18B20 temperature sensor of sensor (12).
4. a kind of tap water pipe network pressure flow according to claim 1 monitors terminal, it is characterised in that: the gas passes
The model MQ2 gas sensor of sensor (13).
5. a kind of tap water pipe network pressure flow according to claim 1 monitors terminal, it is characterised in that: the data are adopted
Collect transponder (11) internal single-chip microcontroller model PICl8F4620 single-chip microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910726151.8A CN110513601A (en) | 2019-08-07 | 2019-08-07 | A kind of tap water pipe network pressure flow monitoring terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910726151.8A CN110513601A (en) | 2019-08-07 | 2019-08-07 | A kind of tap water pipe network pressure flow monitoring terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110513601A true CN110513601A (en) | 2019-11-29 |
Family
ID=68623925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910726151.8A Pending CN110513601A (en) | 2019-08-07 | 2019-08-07 | A kind of tap water pipe network pressure flow monitoring terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110513601A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833967A (en) * | 2020-12-30 | 2021-05-25 | 北京奥特美克科技股份有限公司 | Low-power consumption measurement and control terminal for water supply network |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001262632A (en) * | 2000-03-17 | 2001-09-26 | Meikyo Denki Kk | Measurement monitor on-street station device for residual chlorine network/pressure/temperature of pipe network |
| CN202469495U (en) * | 2012-01-06 | 2012-10-03 | 中工武大设计研究有限公司 | Terminal device for monitoring water supply pipe network |
| US20130041601A1 (en) * | 2011-08-12 | 2013-02-14 | Mueller International, Llc | Leak detector |
| CN103322413A (en) * | 2013-06-28 | 2013-09-25 | 成都汉康信息产业有限公司 | Remote monitoring terminal for urban pipe network pressure |
| CN105569121A (en) * | 2015-12-24 | 2016-05-11 | 哈尔滨工业大学 | Intelligent water feed pipeline system with pressure flow monitoring recording and teletransmission function |
| CN205746045U (en) * | 2016-06-20 | 2016-11-30 | 翼石电子股份有限公司 | Underground pipe network sensing device |
| CN106969268A (en) * | 2017-04-24 | 2017-07-21 | 彭程 | A kind of pipe network monitor system and its method |
| CN206496792U (en) * | 2017-03-09 | 2017-09-15 | 浙江钛合仪器有限公司 | A kind of water supply network operational parameter detection site device |
-
2019
- 2019-08-07 CN CN201910726151.8A patent/CN110513601A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001262632A (en) * | 2000-03-17 | 2001-09-26 | Meikyo Denki Kk | Measurement monitor on-street station device for residual chlorine network/pressure/temperature of pipe network |
| US20130041601A1 (en) * | 2011-08-12 | 2013-02-14 | Mueller International, Llc | Leak detector |
| CN202469495U (en) * | 2012-01-06 | 2012-10-03 | 中工武大设计研究有限公司 | Terminal device for monitoring water supply pipe network |
| CN103322413A (en) * | 2013-06-28 | 2013-09-25 | 成都汉康信息产业有限公司 | Remote monitoring terminal for urban pipe network pressure |
| CN105569121A (en) * | 2015-12-24 | 2016-05-11 | 哈尔滨工业大学 | Intelligent water feed pipeline system with pressure flow monitoring recording and teletransmission function |
| CN205746045U (en) * | 2016-06-20 | 2016-11-30 | 翼石电子股份有限公司 | Underground pipe network sensing device |
| CN206496792U (en) * | 2017-03-09 | 2017-09-15 | 浙江钛合仪器有限公司 | A kind of water supply network operational parameter detection site device |
| CN106969268A (en) * | 2017-04-24 | 2017-07-21 | 彭程 | A kind of pipe network monitor system and its method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833967A (en) * | 2020-12-30 | 2021-05-25 | 北京奥特美克科技股份有限公司 | Low-power consumption measurement and control terminal for water supply network |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206114146U (en) | Wireless temperature measuring device and wireless temperature measurement cubical switchboard | |
| CN205809644U (en) | A kind of cable duct of substation monitoring and alarming system | |
| CN205483278U (en) | Wireless temperature measurement system based on passive CT asks for | |
| CN203587139U (en) | Safety monitoring system of cable tunnel well | |
| CN201607804U (en) | SF6 gas concentration online monitoring and alarming system based on sensor network technology | |
| CN110513601A (en) | A kind of tap water pipe network pressure flow monitoring terminal | |
| CN110146731A (en) | A kind of electric metering box fire protection monitoring device and monitoring method | |
| CN202814562U (en) | Wireless temperature measurement system for distribution network equipment | |
| CN201517950U (en) | Temperature wireless monitoring system of high voltage device of transformer station | |
| CN205646820U (en) | Take independent harmonic metering modules's comprehensive monitoring and protection ware | |
| CN207423270U (en) | A kind of cable duct monitoring and warning equipment | |
| CN209282930U (en) | A kind of distributing transformer monitoring system | |
| CN207007240U (en) | A kind of GIS device status remote monitoring system | |
| CN206892629U (en) | A kind of Internet of Things intellectuality cleaner intelligent automation monitoring system | |
| CN214471480U (en) | Fixed-point monitoring system for pipeline pressure | |
| CN206269928U (en) | A kind of wireless temperature measurement system for High-Voltage Electrical Appliances | |
| CN107621284A (en) | A kind of HV switchboard online detection system | |
| CN204101212U (en) | Transformer station 10kV hands injured circuit breaker cart insulating contact temp measuring system | |
| CN208443961U (en) | A kind of cable and junction malfunction indicator | |
| CN203931131U (en) | Distributed apparatus abnormal alarm system | |
| CN209387796U (en) | Superfrequency detection system based on crusing robot | |
| CN104360229B (en) | One kind length treats that type is opposed electricity-stealing checking instrument | |
| CN205549330U (en) | Appearance is patrolled and examined in fire control | |
| CN206378569U (en) | A kind of voltage relay abnormal detector | |
| CN204741262U (en) | Earth connection earthleakage protective equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191129 |